Earthing problem since firmware 3.12.2 on MK3s

Première couche à problème en petg

Zotavení ze ztráty napájení

New game (changer)

Random Filament Change after MBL when running printer via Prusa Connect / PrusaLink

<p><strong>Original Prusa MK4 </strong>has a lead time of<strong> 5-6 weeks. </strong>Check out the shipping table below.</p>
<p><strong>Original Prusa MK4 kit </strong>-<strong> </strong>Shipping starts during the week of June 12th.<strong> New orders will be processed in August. </strong>Check out the shipping table below.</p>
<p><strong>MK4 Upgrades</strong> - Shipping of full MK3S+ to MK4 upgrades will begin within a week of June 26th. Upgrades to MK3.5 and MK3.9 will be available by the end of July.</p>
<p><strong>Original Prusa Enclosure</strong> - standalone units are in stock<strong>.</strong></p>
<p><strong>Original Prusa i3 MK3S+ assembled printers and kits</strong> are <strong>IN STOCK!</strong></p>
<p><strong>The Original Prusa MINI+</strong> pre-assembled printers and kits are <strong>IN STOCK!</strong></p>
<p><strong>Original Prusa SL1S and CW1S bundles</strong> are <strong>IN STOCK!</strong></p>
<p><strong>Original Prusa XL one-tool head printers </strong>- shipping of the fully assembled printers with one tool head has started. The first units of the XL one-tool semi-assembled printers will be shipped by the end of the week of May 29th, and the full production starts on the week of June 12th. Keep an eye on your mailbox for the confirmation notification. New orders will be processed at the end of 2023.</p>
<p><strong>Original Prusa XL multi-tool head printers</strong> - We will ship the dual-tool head printers before the five-tool printers. The initial batch of dual-tool head printers will be shipped in the week of June 19th. The five-tool printers will follow approximately one month later, in the middle of July. </p>
<h3>MK4 assembled printers shipping table</h3>
<table class="table" style="border-collapse: collapse; height: 602.531px; border-style: ridge; width: 100%;" border="1">
<tbody>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;"><strong>Order date</strong></td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;"><strong>Shipping estimate</strong></td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">March 29th</td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">Already shipped</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">March 30th</td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">Already shipped</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">March 31st</td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">Currently shipping</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">April 1st</td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">Currently shipping</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">April 2nd</td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 126px;" rowspan="3">From week 22 (starts May 29th)</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">April 3rd</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">April 4th</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">April 5th</td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 168px;" rowspan="5">From week 23 (starts June 5th)</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">April 6th</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">April 7th</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">April 8th</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">April 9th</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">Week 15 (starts April 10th)</td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">From week 24 (starts June 12th)</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">Week 16 (starts April 17th)</td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 84px;" rowspan="2">From week 25 (starts June 19th)</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">Week 17 (starts April 24th)</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">Week 18 (starts May 1st)</td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 84px;" rowspan="2">From week 26 (starts June 26th)</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">Week 19 (starts May 8th)</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">Week 20 (starts May 15th)</td>
<td style="height: 42px; border-style: dotted; border-width: 1px; text-align: center; width: 49.9387%;" rowspan="2">From week 27 (starts July 3rd)</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">Week 21 (starts May 22th)</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">Week 22 (starts May 29th)</td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">From week 28 (starts July 10th)</td>
</tr>
</tbody>
</table>
<h3>MK4 kits shipping table</h3>
<table class="table" style="border-collapse: collapse; height: 602.531px; border-style: ridge; width: 100%;" border="1">
<tbody>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;"><strong>Order date</strong></td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;"><strong>Shipping estimate</strong></td>
</tr>
<tr style="height: 21px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 21px;">April 12th until 5.30 pm (CET)</td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 21px;">From week 24 (starts June 12th)</td>
</tr>
<tr style="height: 42px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">April 12th from 5.30 pm until midnight (CET)</td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 42px;">From week 25 (starts June 19th) to week 28 (starts July 10th)</td>
</tr>
<tr style="height: 21px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 21px;">April 13th</td>
<td style="height: 42px; border-style: dotted; border-width: 1px; text-align: center; width: 49.9387%;" rowspan="2">From week 29 (starts July 17th)</td>
</tr>
<tr style="height: 21px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 21px;">April 14th</td>
</tr>
<tr style="height: 21px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 21px;">April 15th</td>
<td style="height: 84px; border-style: dotted; border-width: 1px; text-align: center; width: 49.9387%;" rowspan="4">From week 30 (starts July 24th)</td>
</tr>
<tr style="height: 21px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 21px;">April 16th</td>
</tr>
<tr style="height: 21px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 21px;">Week 16 (starts April 17th)</td>
</tr>
<tr style="height: 21px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 21px;">Week 17 (starts April 24th)</td>
</tr>
<tr style="height: 21px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 21px;">Week 18 (starts May 1st)</td>
<td style="height: 84px; border-style: dotted; border-width: 1px; text-align: center; width: 49.9387%;" rowspan="4">From week 31 (starts July 31st)</td>
</tr>
<tr style="height: 21px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 21px;">Week 19 (starts May 8th)</td>
</tr>
<tr style="height: 21px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 21px;">Week 20 (starts May 15th)</td>
</tr>
<tr style="height: 21px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 21px;">Week 21 (starts May 22th)</td>
</tr>
<tr style="height: 21px;">
<td style="width: 50.0613%; border-style: dotted; border-width: 1px; text-align: center; height: 21px;">Week 22 (starts May 29th)</td>
<td style="width: 49.9387%; border-style: dotted; border-width: 1px; text-align: center; height: 21px;">From week 32 (starts August 7th)</td>
</tr>
</tbody>
</table>
<h3>Current lead times for new orders</h3>
<p><span style="color: #e67e23;"><strong>Updated: May 30th, 2023</strong></span></p>
<p><em>The dates are only an estimation at the date of update, specified above, and rely on the actual production. We're doing our best but please be aware that it can shift for the lead time products. We will update here and on the product pages accordingly.</em></p>
<p></p>
<table class="table" style="border-collapse: collapse; height: 602.531px; border-style: ridge; width: 100%;" border="1">
<tbody>
<tr style="height: 60.5312px;">
<td style="height: 60.5312px; width: 47.2453%; border-style: dotted; border-width: 1px; text-align: center;">
<h4>Product</h4>
</td>
<td style="height: 60.5312px; width: 50.4654%; border-style: dotted; border-width: 1px; text-align: center;">
<h4>Lead time</h4>
</td>
</tr>
<tr>
<td style="width: 47.2453%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>Original Prusa MK4</strong></p>
</td>
<td style="width: 50.4654%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>5-6 weeks</strong></p>
</td>
</tr>
<tr>
<td style="width: 47.2453%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>Original Prusa MK4 kit</strong></p>
</td>
<td style="width: 50.4654%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>New orders will be processed in August.</strong></p>
</td>
</tr>
<tr style="height: 57px;">
<td style="height: 57px; width: 47.2453%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>Original Prusa i3 MK3S+ kit</strong> (all versions)</p>
</td>
<td style="height: 57px; width: 50.4654%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>IN STOCK!</strong></p>
</td>
</tr>
<tr style="height: 55px;">
<td style="height: 55px; width: 47.2453%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>Original Prusa i3 MK3S+ complete</strong> (all versions)</p>
</td>
<td style="height: 55px; width: 50.4654%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>IN STOCK!</strong></p>
</td>
</tr>
<tr style="height: 68px;">
<td style="height: 68px; width: 47.2453%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>Original Prusa i3 MK3/S to MK3S+ upgrade<br /></strong>Original Prusa MINI to MINI+ upgrade kit<strong><br /></strong></p>
</td>
<td style="height: 68px; width: 50.4654%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>IN STOCK!</strong></p>
</td>
</tr>
<tr style="height: 84px;">
<td style="height: 84px; width: 47.2453%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>SL1S SPEED/bundle</strong></p>
<p><strong>CW1S</strong></p>
</td>
<td style="height: 84px; width: 50.4654%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>IN STOCK!</strong></p>
</td>
</tr>
<tr style="height: 84px;">
<td style="width: 47.2453%; border-style: dotted; border-width: 1px; text-align: center; height: 84px;">
<p><strong>Original Prusa SL1 to SL1S upgrade kit</strong></p>
</td>
<td style="width: 50.4654%; border-style: dotted; border-width: 1px; text-align: center; height: 84px;">
<p><strong>IN STOCK!</strong></p>
</td>
</tr>
<tr style="height: 58px;">
<td style="height: 58px; width: 47.2453%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>Original Prusa MINI+ (pre-assembled parts)</strong></p>
</td>
<td style="height: 58px; width: 50.4654%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>IN STOCK!</strong></p>
</td>
</tr>
<tr style="height: 68px;">
<td style="width: 47.2453%; border-style: dotted; border-width: 1px; text-align: center; height: 68px;">
<p><strong>Original Prusa MINI+ kit</strong></p>
</td>
<td style="width: 50.4654%; border-style: dotted; border-width: 1px; text-align: center; height: 68px;">
<p><strong>IN STOCK!</strong></p>
</td>
</tr>
<tr style="height: 68px;">
<td style="width: 47.2453%; border-style: dotted; border-width: 1px; text-align: center; height: 68px;">
<p><strong>Original Prusa Enclosure</strong></p>
<p>(Standalone units)</p>
</td>
<td style="width: 50.4654%; border-style: dotted; border-width: 1px; text-align: center; height: 68px;">
<p><strong>IN STOCK</strong></p>
</td>
</tr>
</tbody>
</table>
<p>You can find your order shipping date in the order detail section in our shop.</p>
<div class="note-callout">All products purchased in our <a href="https://shop.prusa3d.com/">online store</a> are currently being shipped from the<strong> Czech Republic, </strong>a member state of the <strong>European Union, customs charges may apply for shipments to countries outside of the EU!</strong> Please see our advisory article <a href="http://help.prusa3d.com/article/vat-value-added-tax-customs-fees_1505#orders-outside-eu">here</a>.</div>

Shipping information

<p>Every FFF (Fused Filament Fabrication) printer requires a First Layer Calibration, which <strong>sets the vertical "Z" distance between the nozzle and the print surface</strong>. Sometimes this value needs <strong>a slight adjustment</strong> and for this situation, there is an option called "<strong>Live adjust Z"</strong> <em>(as you are mostly tuning it live during the first layers of your print).</em> The reason for adjusting the distance is to mostly <strong>provide better adhesion</strong> of the extruded filament.</p>
<h3><strong>How does it work?</strong></h3>
<p>It is important to know the following:</p>
<ul>
<li>the default value before the First layer calibration starts at zero (0.000) for all printers</li>
<li>to get <strong>closer to the print surface</strong>, turn the knob <strong>counter-clockwise</strong> and further <strong>increase the negative value</strong> (e.g. -0.500 =&gt; -0.600 =&gt; -0.700...)</li>
<li>to get <strong>further from the print surface</strong>, turn the knob <strong>clockwise</strong> and continue <strong>lowering the negative value</strong> (e.g. -0.700 =&gt; -0.600 =&gt; -0.500...)</li>
</ul>
<p>The values of the <em>Live adjust Z</em> are typically in the range of -1.500 to -0.200. Going above zero into the positive values is not possible, this indicates either an issue with the measuring sensor (M.I.N.D.A., P.I.N.D.A., SuperPINDA) or incorrect alignment.</p>
<p>The correctly assembled print head has <strong>the sensor always slightly above the nozzle</strong>, never at an equal level or below the nozzle (see the picture below). <em>The exact position can slightly vary, use the last chapter of the assembly manual of your printer to set the rough distance.</em></p>
<p style="text-align: center;"><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/XYZ-Calibration-MK3-and-MK3S-04.jpeg" alt="" width="718" height="350" loading="lazy" /></p>
<p style="text-align: center;"><em>Example of the MK3S extruder</em></p>
<h3>Live Adjust Z (while printing)</h3>
<p>The most common approach is to perform the <em>Live adjust Z</em> during the print. Go to <em>LCD Menu -&gt;</em> <span style="color: #000000;" data-hd-color="#000000" data-hd-highlight=""><em>Live adjust Z.</em></span> This will show the <span style="color: #000000;" data-hd-color="#000000" data-hd-highlight=""><em>Live adjust Z</em></span> value you have set in the First layer calibration. From here you can adjust it by rotating the knob.</p>
<p>The <strong>Original Prusa MK4</strong> and <strong>Original Prusa XL</strong> are equipped with a loadcell, which will calibrate the first layer automatically. In case you would still like to fine-tune it, you can long-press the knob while the first layer is printed.</p>
<p><img decoding="async" style="max-height: 300px; display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/2022/05/Live-adjust-z-1-1.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="https://help.prusa3d.com/wp-content/uploads/2022/05/Live-adjust-z-1-1-600x194.jpg 600w, https://help.prusa3d.com/wp-content/uploads/2022/05/Live-adjust-z-1-1-800x258.jpg 800w, https://help.prusa3d.com/wp-content/uploads/2022/05/Live-adjust-z-1-1-300x97.jpg 300w, https://help.prusa3d.com/wp-content/uploads/2022/05/Live-adjust-z-1-1-768x248.jpg 768w, https://help.prusa3d.com/wp-content/uploads/2022/05/Live-adjust-z-1-1.jpg 1600w" width="600" height="194" loading="lazy" data-hd-height="300px" data-hd-align="center" /></p>
<p style="text-align: center;"><em>Example of the MK3S menu</em></p>
<div>
<div class="tip-callout">PRO tip: shortcut from the main screen, while printing the first few layers press and hold the knob for a few seconds to access the <em>Live adjust Z</em> screen.</div>
</div>
<div>
<div class="warning-callout"><strong>Adjusting Live adjust Z value while printing is permanent</strong>, not only for the ongoing print! The new value will also remain after you turn OFF the printer.</div>
</div>
<div>In the picture below you can see examples of different <em>Live adjust Z</em> values. If the nozzle is too high from the surface, the filament won't stick properly (left), if the nozzle is too close to the surface, the filament won't be able to "flow out" leading to a potential clog of the nozzle (right).</div>
<p><img decoding="async" src="https://help.prusa3d.com/wp-content/uploads/First-Layer-Calibration-04.jpg" alt="" width="1132" height="450" loading="lazy" /></p>
<h3>Live Adjust Z (before the print)</h3>
<p>You can also change the value while the printer is at rest from <em>LCDMenu -&gt; Settings -&gt; Live adjust Z.</em> You will see the value set previously during the First layer calibration, and from here you can adjust it by rotating the knob.</p>
<p><img decoding="async" style="max-height: 300px; display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/2022/05/Live-adjust-z-2.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="https://help.prusa3d.com/wp-content/uploads/2022/05/Live-adjust-z-2-600x194.jpg 600w, https://help.prusa3d.com/wp-content/uploads/2022/05/Live-adjust-z-2-800x258.jpg 800w, https://help.prusa3d.com/wp-content/uploads/2022/05/Live-adjust-z-2-300x97.jpg 300w, https://help.prusa3d.com/wp-content/uploads/2022/05/Live-adjust-z-2-768x248.jpg 768w, https://help.prusa3d.com/wp-content/uploads/2022/05/Live-adjust-z-2.jpg 1600w" width="600" height="194" loading="lazy" data-hd-height="300px" data-hd-align="center" /></p>
<p style="text-align: center;"><em>Example of the MK3S menu</em></p>
<p><strong>The Live adjust Z should be used only to fine-tune the distance</strong>. For example, PETG and other high-temperature materials require to be squished in the surface slightly more as they tend to warp (lift up), compared to the PLA. If you have replaced the sensor or disassembled the print head (extruder) you should run the <a href="http://help.prusa3d.com/article/first-layer-calibration-i3_112364">First Layer Calibration (i3)</a> instead.</p>
<div> </div>


Live adjust Z

<p>The Original Prusa FDM printers have a sensor to detect distance from the print surface. During a calibration, and before each print, the sensor will go through a number of points, in a grid pattern, spread across the build-plate (whether it is a powder-coated or smooth PEI sheet does not matter), and measures the distance to the sheet. These points are interpolated and used to create a virtual mesh of the bed. During printing, if the bed is slightly warped, the sensor will still precisely follow the surface according to its measured mesh</p>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/meshbed.jpg" sizes="100vw" srcset="https://help.prusa3d.com/wp-content/uploads/meshbed-300x170.jpg 300w, https://help.prusa3d.com/wp-content/uploads/meshbed-600x341.jpg 600w, https://help.prusa3d.com/wp-content/uploads/meshbed-768x436.jpg 768w, https://help.prusa3d.com/wp-content/uploads/meshbed-800x455.jpg 800w" width="614" height="348" loading="lazy" /></p>
<h3>Original Prusa MK2/2.5/S, MK3/S/+</h3>
<p>These printers are equipped with a PINDA sensor, apart from the MK3S+, which is equipped with a SuperPINDA sensor.</p>
<p>The StallGuard for the Z-axis is active during the mesh bed leveling. In case the nozzle crashes into the bed before the PINDA sensor triggers, the calibration process is interrupted and the user is asked to check the nozzle for any kind of debris.</p>
<h4>Mesh bed leveling settings</h4>
<div class="note-callout">This feature is available starting from firmware 3.7.0.</div>
<p>The Mesh bed leveling settings can be found within <em>Settings - Mesh bed Leveling</em>, on the LCD menu. There you have the following options:</p>
<ul>
<li>Mesh (3x3 - 7x7)</li>
<li>Z-probe nr. (1 - 3 - 5)</li>
<li>Magnet comp. (ON / OFF)</li>
</ul>
<p><strong>Mesh:</strong> The default grid density is 3x3 (9 points). However, if you still experience uneven first layer adhesion, you can increase the density in Settings - Mesh bed leveling - Mesh to 7x7 (49 points).</p>
<p><strong>Z-probe nr.:</strong> Changing the Z-sensor nr. you change how many times will each point be measured. We suggest either 3 or 5 measurements per point since the final value is calculated as an average value. Changing these settings affects how long will the Mesh bed leveling procedure takes to complete.</p>
<p><strong>Magnet comp.:</strong> With 7x7 Mesh bed leveling, you can choose whether or not to use Magnets compensation. 3 of the 49 points are so close to magnets, that the reading can be off by as much as 80μm (microns). Magnet compensation ignores readings from these 3 points and calculates them from the surrounding points. <strong>We suggest leaving this function on.</strong></p>
<h4>Enforcing the Z-calibration</h4>
<p>If the mesh bed leveling is interrupted during the procedure, before a print, a message will appear on the screen stating "Enforcing the Z-calibration" and the printer will re-home and run through the procedure again. This can occur if there is debris on the nozzle pushing the bed down when probing, or if you touch and press the bed while it is probing. This will bring the deviance above a certain threshold and it will simply make another attempt to run the Mesh Bed Leveling. This is to avoid starting it from the menu again if the problem was simply an accident. If the problem remains, it will repeat this procedure three times before canceling the print.</p>
<h4>Troubleshooting</h4>
<p>Please see our dedicated article <a href="http://help.prusa3d.com/article/p-i-n-d-a-superpinda-sensor-testing_2091">P.I.N.D.A./SuperPINDA Sensor testing</a> to resolve any issue.</p>
<h3>Original Prusa MINI/+</h3>
<p>The Original Prusa MINI is equipped with a M.I.N.D.A. sensor, while the Original Prusa MINI+ is equipped with a SuperPINDA sensor. The grid density is 4x4. </p>
<h4>Troubleshooting</h4>
<p>Please see our dedicated article <a href="http://help.prusa3d.com/article/m-i-n-d-a-superpinda-sensor-testing-mini-mini_134021">M.I.N.D.A./SuperPINDA sensor testing (MINI/MINI+)</a> to resolve any issue.</p>
<h3>Original Prusa XL and Original Prusa MK4</h3>
<p>The Original Prusa XL and the Original Prusa MK4 are equipped with a <a href="https://help.prusa3d.com/preview/article/loadcell-xl"><strong>loadcell</strong></a>, to detect that the nozzle is close enough to the steel sheet for printing, and to avoid damage that would be caused by the nozzle digging into the steel sheet. </p>
<p>Before a print, the nozzle will check the distance to the print sheet in several places to create a virtual height map of the surface. The points are measured within the area of the chosen print. </p>


Mesh bed leveling

<p>The printer can fully recover from a complete loss of power without the need for batteries or a UPS. A special sensor detects mains voltage, and in case of an interruption, it immediately shuts down the heatbed and extruder heating, leaving enough power in the capacitors to store the position and lift the print head away from the print. In case of a very short power failure, the printer will attempt to continue printing immediately without waiting for user interaction.</p>
<div class="tip-callout">If you want to test the power panic on MK3/S/+, check <a href="http://help.prusa3d.com/article/testing-safety-features-mk3-mk3s_2079">Testing safety features (MK3/MK3S)</a>.</div>
<div class="warning-callout">Keep in mind that power panic doesn't work if you use the on/off switch on the PSU</div>
<h3>Resuming the print</h3>
<p>When the power comes back, the printer will give you an option to continue the print. Keep in mind that during extended periods without power, the bed will cool down and the printed object can detach itself from the sheet plate. So, before resuming the process, check the following: </p>
<ol>
<li>Make sure that all objects are still attached to the steel sheet plate.</li>
<li>Follow the instructions on the LCD screen and resume the print.</li>
<li>Stay with the printer for about 10 minutes and make sure that the printing process continues without any problems.</li>
</ol>


Power Panic

<div class="warning-callout"><strong>WARNING:</strong> Please note that Prusa Connect and PrusaLink are currently in a beta stage and the information below might change with the upcoming releases.</div>
<p>Prusa Connect and PrusaLink are two remote printing solutions developed in-house by Prusa. Its origin is in the management system used in our <a href="https://blog.prusaprinters.org/guinness-world-records-1096-original-prusa-3d-printers-running-at-the-same-time_30677/">record-sized print farm located in Prague HQ.</a></p>
<ul>
<ul>
<li><strong>Prusa Connect</strong> is a cloud service for remote printing available from anywhere.</li>
<li><strong>PrusaLink</strong>* is the client-side running locally on your printer, accessible from local network</li>
</ul>
</ul>
<p><em>*formerly known as Prusa Connect Local</em></p>
<p> </p>
<h2>What is Prusa Connect?</h2>
<p>Prusa Connect (<a href="http://connect.prusa3d.com">connect.prusa3d.com</a>) allows you to control your individual printers or even manage a print farm from anywhere in the world.</p>
<p style="text-align: center;"><img decoding="async" src="https://help.prusa3d.com/wp-content/uploads/2023/04/7d415cde2c49dd8c84de560b7ec43e19.png" sizes="(min-width: 1024px) 820px, 100vw" srcset="Prusa Connect and PrusaLink explained" alt="" width="900" height="573" loading="lazy" /></p>
<p style="text-align: center;"><em>Example of Prusa Connect interface (cloud service)</em></p>
<p> </p>
<p>It is available for free to the owners of selected Original Prusa printers (see the list below). You get a free 1 GB of cloud storage for your G-codes and telemetric data. The full list of features and pricing for end customers or businesses will be announced later on.</p>
<p>Furthermore, Prusa Connect is able to monitor the use of each printer individually, providing valuable statistics of your production environment. </p>
<p> </p>
<h2>What is PrusaLink?</h2>
<p>Much like Octoprint, this remote printer-management system runs locally on your Original Prusa printer.</p>
<p><img decoding="async" src="https://help.prusa3d.com/wp-content/uploads/2023/01/12af6bd49830e088.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="PrusaLink and Prusa Connect explained" alt="" width="1451" height="800" loading="lazy" /></p>
<p style="text-align: center;"><em>Example of PrusaLink interface (local network)</em></p>
<p> </p>
<p>Its main goal is to provide communication between your printer and the Prusa Connect cloud. The secondary function is to provide a web interface, which can be used on your local (home) network only. Simply paste the printer's IP address into your web browser to access it. Using PrusaLink alone you can monitor your printer, upload G-codes, start or cancel a print. </p>
<p> </p>
<h2>How to install and configure PrusaLink and Prusa Connect?</h2>
<p>To use the Prusa Connect, you have to first set up the PrusaLink on your printer. The guides below will take you to step by step through the entire process.</p>
<table class="striped" style="width: 100%; height: 135.328125px;">
<tbody>
<tr style="height: 21.109375px;">
<td style="width: 33.251534%; height: 21.109375px;"><strong>FDM printers</strong></td>
<td style="width: 33.374233%; height: 21.109375px;"><strong>PrusaLink</strong></td>
<td style="width: 33.374233%; height: 21.109375px;"><strong>Prusa Connect</strong></td>
</tr>
<tr style="height: 18px;">
<td style="width: 33.251534%; height: 18px;">Original Prusa <strong>MK4</strong></td>
<td style="width: 33.374233%; height: 18px;"><a href="http://help.prusa3d.com/guide/wi-fi-and-prusalink-setup-mk4_413293">built-in</a></td>
<td style="width: 33.374233%; height: 18px;"><a href="http://help.prusa3d.com/guide/adding-the-printer-to-prusa-connect-mk4_417586">Available</a></td>
</tr>
<tr style="height: 36px;">
<td style="width: 33.251534%; height: 36px;">Original Prusa i3 <strong>MK3/S/+</strong></td>
<td style="width: 33.374233%; height: 36px;"><a href="http://help.prusa3d.com/guide/prusalink-and-prusa-connect-setup-mk3-s-_221744">via RPi / RPi Zero (GPIO</a>/USB)</td>
<td style="width: 33.374233%; height: 36px;"><a href="http://help.prusa3d.com/guide/prusalink-and-prusa-connect-setup-mk3-s-_221744">Available</a></td>
</tr>
<tr style="height: 18px;">
<td style="width: 33.251534%; height: 18px;">Original Prusa i3 <strong>MK2.5/S</strong></td>
<td style="width: 33.374233%; height: 18px;">via RPi (USB)</td>
<td style="width: 33.374233%; height: 18px;">Available</td>
</tr>
<tr style="height: 21.109375px;">
<td style="width: 33.251534%; height: 21.109375px;">Original Prusa <strong>XL</strong></td>
<td style="width: 33.374233%; height: 21.109375px;"><a href="http://help.prusa3d.com/guide/wi-fi-and-prusalink-setup-xl_419630">built-in</a></td>
<td style="width: 33.374233%; height: 21.109375px;"><a href="http://help.prusa3d.com/guide/adding-the-printer-to-prusa-connect-xl_420001">Available</a></td>
</tr>
<tr style="height: 21.109375px;">
<td style="width: 33.251534%; height: 21.109375px;">Original Prusa <strong>MINI / MINI +</strong></td>
<td style="width: 33.374233%; height: 21.109375px;"><a href="http://help.prusa3d.com/guide/wi-fi-and-prusalink-setup-mini-_316781">built-in</a></td>
<td style="width: 33.374233%; height: 21.109375px;">TBA (work in progress)</td>
</tr>
</tbody>
</table>
<p> </p>
<table class="striped">
<tbody>
<tr>
<td style="width: 32.158%;"><strong>SLA printers</strong></td>
<td style="width: 32.158%;"><strong>PrusaLink</strong></td>
<td style="width: 32.162%;"><strong>Prusa Connect</strong></td>
</tr>
<tr>
<td style="width: 32.158%;">Original Prusa <strong>SL1S SPEED</strong></td>
<td style="width: 32.158%;"><a href="http://help.prusa3d.com/article/prusalink-sl1-sl1s_146094">built-in</a></td>
<td style="width: 32.162%;">TBA (work in progress)</td>
</tr>
<tr>
<td style="width: 32.158%;">Original Prusa <strong>SL1</strong></td>
<td style="width: 32.158%;"><a href="http://help.prusa3d.com/article/prusalink-sl1-sl1s_146094">built-in</a></td>
<td style="width: 32.162%;">TBA (work in progress)</td>
</tr>
</tbody>
</table>
<h3> </h3>
<h3>Next-gen Original Prusa printers</h3>
<p>Such as the<strong> MK4, XL, MINI/+, SL1/SL1S </strong> as well as the other upcoming models have the PrusaLink built-in. You can connect the printer either using Wi-Fi or a wired LAN (Ethernet) network.</p>
<ul>
<li><a href="http://help.prusa3d.com/guide/wi-fi-and-prusalink-setup-mk4_413293">Wi-Fi and PrusaLink setup (MK4)</a></li>
<li><a href="http://help.prusa3d.com/guide/adding-the-printer-to-prusa-connect-mk4_417586">Adding the printer to Prusa Connect (MK4)</a> </li>
<li><a href="http://help.prusa3d.com/guide/wi-fi-and-prusalink-setup-xl_419630">Wi-Fi and PrusaLink setup (XL)</a></li>
<li><a href="http://help.prusa3d.com/guide/adding-the-printer-to-prusa-connect-xl_420001">Adding the printer to Prusa Connect (XL)</a></li>
<li><a href="http://help.prusa3d.com/guide/wi-fi-and-prusalink-setup-mini-_316781">Wi-Fi and PrusaLink setup (MINI/+)</a></li>
<li><a href="http://help.prusa3d.com/article/prusalink-sl1-sl1s_146094">PrusaLink (SL1/S)</a></li>
</ul>
<p> </p>
<h3>Original Prusa i3 MK3/S/+ or MK2.5/S</h3>
<p>In this case, the PrusaLink name also refers to the required hardware solution of a Raspberry Pi (RPi). These printers don't have enough performance, therefore additional hardware is required. PrusaLink is a replacement for the discontinued <a href="http://help.prusa3d.com/article/prusaprint-rpi-zero-and-octoprint_2180">PrusaPrint solution</a> (Octoprint and the RPi Zero W).</p>
<h4>Which Raspberry Pi should I get for my i3 (MK3/S/+ or MK2.5/S)?</h4>
<p>For your MK3/S/+, you need to get a Raspberry Pi (RPi) to make the PrusaLink and Prusa Connect work. The supported RPi boards are listed below and if you are about to purchase a new one, it is highly recommended to seek the latest generation, as the older ones might be slower.</p>
<p>On MK3/S/+, you can attach the RPi Zero directly onto the printer’s mainboard or use the USB connection.<br />On MK2.5/S, you have to use the USB connection to the RPi. Then, the PrusaLink and PrusaConnect setup is fairly similar to the MK3/S/+.</p>
<p>Since the RPi doesn't have internal storage, you need to get a MicroSD card. Recommended SD card: Micro SD, SDHC standard, Class 10, 8GB or more. Preferably, choose a name-brand card known to work with RPi. Do backups regularly as even a name-brand card doesn’t guarantee you won’t lose your data. </p>
<p><strong>Supported boards (GPIO connection on Einsy Rambo)</strong></p>
<ul>
<li>Raspberry Pi Zero 2 W</li>
<li>Raspberry Pi Zero W</li>
</ul>
<p><strong>Supported boards (USB connection)</strong></p>
<ul>
<li>Raspberry Pi 4</li>
<li>Raspberry Pi 3+</li>
<li>Raspberry Pi 3</li>
</ul>
<p><strong>Unsupported boards</strong></p>
<ul>
<li>Raspberry Pi Zero (without Wi-Fi) and older</li>
<li>Raspberry Pi 2 and older</li>
</ul>
<div class="warning-callout"><strong>What not to do while RPi Zero W/2 is connected and the printer is powered up:<br /></strong><br />- Don't move any of the printer's axes by hand! Use the Move Axis menu only.<br />- Don't connect or disconnect the RPi.<br />- Don't insert or remove the microSD card inside the RPi.<br />- Don't touch the RPi board.<br />- For connecting or powering the RPi, don't use any other methods than the ones endorsed by Prusa.<br />- Only follow the guidance from the official documentation issued by Prusa Research.<br />- Prusa Research is not responsible for any damage done by or caused to third-party hardware.</div>
<p> </p>
<ul>
<li><a href="http://help.prusa3d.com/guide/prusalink-and-prusa-connect-setup-mk3-s-_221744">PrusaLink and Prusa Connect setup (MK3/S/+)</a></li>
<li><a href="http://help.prusa3d.com/guide/printing-on-mk3-s-via-prusalink_225689">Printing on MK3/S/+ via PrusaLink</a>
<p> </p>
</li>
</ul>
<h3><strong>Other guides related to Prusa Connect and PrusaLink:</strong></h3>
<ul>
<li><a href="http://help.prusa3d.com/guide/sending-files-from-prusaslicer-to-prusalink_222961">Sending files from PrusaSlicer to PrusaLink</a></li>
<li><a href="http://help.prusa3d.com/article/sending-g-codes-to-printer-via-network-prusaconnect-prusalink-octoprint_196761">Sending files from PrusaSlicer to printer via network (Prusa Connect, PrusaLink, Octoprint)</a></li>
</ul>
<p> </p>
<ul>
<li> <a href="http://help.prusa3d.com/article/connecting-original-prusa-sl1-sl1s-to-prusaslicer_133977">Connecting SL1/S to PrusaSlicer</a></li>
<li><a href="http://help.prusa3d.com/article/internet-connection-sl1-sl1s_1981">Internet Connection (SL1/S)</a> </li>
<li><a href="http://help.prusa3d.com/article/prusa-connect-local-mini_133279">Prusa Connect Local (Old firmware connected via Ethernet, Obsolete guide) (MINI/+)</a> <br /> <br /> <br /> </li>
</ul>


Prusa Connect and PrusaLink explained

Original Prusa Curing and Washing Machine (CW1S) is a recommended accessory for the Original Prusa SL1S

Original Prusa CW1 to CW1S platform upgrade

Original Prusa Enclosure assembly

Original Prusa XL - beta test

Original Prusa XL unpacking

The Original Prusa i3 MK3S+ is the successor of the award-winning Original Prusa i3 MK2S 3D printer.

Original Prusa i3 MK3S+ kit assembly

Original Prusa SL1 to SL1S SPEED upgrade

Original Prusa MINI+ kit assembly

The Original Prusa MINI+ is a compact 3D printer with all the bells and whistles you would expect from the creators of the award-winning Original Prusa i3 MK2 and MK3S!

Original Prusa MINI+ semi-assembled

Original Prusa i3 to MMU2S upgrade

Original Prusa i3 MK3/MK3S to MK3S+ upgrade

Original Prusa SL1 3D printer is based on the MSLA printing process. Unlike Original Prusa i3 machines, this printer uses a high-resolution LCD panel and a UV LED to cure thin layers of resin to achieve an unprecedented level of detail.

Original Prusa SL1 kit assembly

The Original Prusa i3 MK3S is the successor of the award-winning Original Prusa i3 MK3 3D printer.

Original Prusa i3 MK3S kit assembly

Original Prusa i3 MK1 to MK2 upgrade

Original Prusa i3 Plus 2.85 mm to 1.75 mm upgrade

Original Prusa i3 Plus 1.75 mm to MK2S upgrade

Original Prusa i3 Plus 1.75 mm kit assembly

Original Prusa i3 MK2 to MK2S upgrade

Original Prusa i3 MK2/S to MMU1 upgrade

The Original Prusa MINI/MINI+ is a compact 3D printer with all the bells and whistles you would expect from the creators of the award-winning Original Prusa i3 MK2 and MK3S!

Original Prusa MINI assembly

Original Prusa i3 MK2S is a successor to Original Prusa i3 MK2 with small hardware tweaks for easier assembly and improved reliability.

Original Prusa i3 MK2S kit assembly

Original Prusa i3 MK2 kit assembly

Original Prusa i3 MK2S to MK3 upgrade

The Original Prusa i3 MK3 is the successor of the award-winning Original Prusa i3 MK2 3D printer.

Original Prusa i3 MK3 kit assembly

Original Prusa i3 MK3 to MK3S upgrade

Original Prusa i3 MK2 MMU1 to MK2.5S MMU2S

Original Prusa i3 MK2 to MK3S upgrade

Original Prusa i3 MK3/MK2.5 to MMU2 v1.01

Original Prusa i3 MK2.5 to MK2.5S upgrade

Original Prusa i3 MK2 to MK2.5S upgrade

Assembly manuals

Basic calibration

Advanced calibration

What to do when the printer reports an error message during calibration.

Calibration Error Messages

All information you need to know to learn how to calibrate your 3D printer to achieve perfect prints.

Calibration

Printer description

Printer features

FAQs and other useful information you might be interested in before or after making your purchase at shop.prusa3d.com

General Information

Basic overview of your 3D printer and it's features, plus general Prusa Research info.

About your printer

3D models

Material guide

Printer maintenance

Prusa Connect & PrusaLink

Slicing

In this section, you can find material guides, printer troubleshooting and general info about using your printer.

Using the printer

Print Quality Troubleshooting

Printer troubleshooting

QR Error codes

Print Error Messages

Description of how to recognize and solve common problems, especially hardware and electronics related.

Troubleshooting

Nozzles

Octoprint

Printer simulator

Protective Shields

Learn about different nozzles, Raspberry Pi connection, Octoprint and more.

3rd party accessories & Other projects

About PrusaSlicer

Configuration and profiles

User interface

Input/output

Left toolbar

Top toolbar

Print settings

Filament settings

Printer settings

Advanced features

Multi-material slicing

SLA slicing

Other (PrusaSlicer)

The official documentation for the PrusaSlicer slicing software. From basic configuration to advanced settings like modifier meshes.

PrusaSlicer

1. Introduction

2A. Printer Unboxing

2B. Printer Unboxing

3. Printer set up

4. First run

Manual changelog

<p>The Original Prusa XL and the Original Prusa MK4 are equipped with a <strong>loadcell</strong>. This component incorporated in the hotend heatsink detects if the nozzle is close enough to the steel sheet for printing.</p>
<p>The only adjustment needed for the <strong>loadcell </strong>is during the Selftest. After that, the first layer calibration is always done automatically during the <strong>mesh bed leveling</strong>. This avoids any damage that would be caused by the nozzle digging into the steel sheet.</p>
<p>The manual first layer calibration (Live Z adjust) and the steel sheet profiles are not necessary with the <strong>loadcell</strong>, as the values are checked automatically before each print.</p>
<h3>Testing the loadcell</h3>
<div class="warning-callout">Do not manipulate or touch the printer unless the instructions on the printer screen prompt you to do so.</div>
<p>During the Selftest, the loadcell will be tested: the printer will show the instructions for testing it.</p>
<p>Alternatively, the loadcell testing can be initiated in <em>LCD Menu -&gt; Control -&gt; Calibration &amp; Tests -&gt; Loadcell Test </em>on the <strong>XL</strong>, or in <em>LCD Menu -&gt; Calibration -&gt; Diagnostics -&gt;Test Loadcell </em>on the <strong>MK4</strong>.</p>
<p>During the test, you will be asked to tap the nozzle at a specific time, and a progress bar on top of the screen will be filled. If the bar is not filled or the printer shows any errors, please contact our <a href="http://help.prusa3d.com/article/customer-support_2287">customer support</a>.</p>


Loadcell (XL, MK4)

<p>Selected Original Prusa printers are equipped with status LEDs located on the lower edge of the LCD screen. Together there are three physical RGB LEDs. The system will change their color and intensity based on the current scenario. The purpose of this system is to provide helpful visual information to the user.</p>
<div class="tip-callout">To ensure the LEDs are visible even from a longer distance. Make sure there is a solid, reflective surface under the front edge of the LCD screen.</div>
<p> </p>
<p><img decoding="async" src="https://help.prusa3d.com/wp-content/uploads/2023/04/a0ba9c14ecc0e9e72b88673c7bd5c4b7.png" sizes="(min-width: 1024px) 820px, 100vw" srcset="Status LED explained" alt="" width="800" height="450" loading="lazy" /></p>
<h3> </h3>
<h3>Compatible printers:</h3>
<ul>
<li>Original Prusa MK4</li>
<li>Original Prusa XL</li>
</ul>
<h3>There are several pre-defined scenarios for the LEDs:</h3>
<ul>
<li><strong>Successful boot</strong>
<ul>
<li><strong>Scenario:</strong> The boot of the system was assessed as successful.</li>
<li><strong>LED response:</strong> The LEDs will pulse shortly with a <strong>green color.</strong></li>
</ul>
</li>
<li><strong>Warning</strong>
<ul>
<li><strong>Scenario:</strong> The printer requires user interaction and then can continue to print (e.g. planned filament change, filament runout, pause in G-code, MMU requires attention, etc.)</li>
<li><strong>LED response:</strong> The LEDs will pulse in <strong>yellow color</strong>.</li>
</ul>
</li>
<li><strong>Critical error</strong>
<ul>
<li><strong>Scenario:</strong> There is a serious error, and the print job cannot continue. The printer must be fixed in order to work correctly (e.g. Thermal runaway, Preheat error, Max/Min temp, ...)</li>
<li><strong>LED response:</strong> The LEDs will pulse in <strong>red color</strong>.</li>
</ul>
</li>
<li><strong>The print job is in progress</strong>
<ul>
<li><strong>Scenario:</strong> The printer is currently in the progress of printing the selected G-code.</li>
<li><strong>LED response:</strong> The LEDs are switched to <strong>blue color</strong>. </li>
</ul>
</li>
<li><strong>The print job is done</strong>
<ul>
<li><strong>Scenario:</strong> The current print job has finished successfully, the print head is parked and the printer is awaiting the user, to collect the printed object. Please note that the <strong>sheet might be still hot! </strong>Avoid harming yourself<strong> </strong>and also give the surface a few moments to cool down to allow easier detachment of the print.</li>
<li><strong>LED response:</strong> The LEDs are switched to <strong>green color</strong>.</li>
</ul>
</li>
</ul>
<h3>Use-defined LED statuses</h3>
<p>LEDs can be controlled using a G-code M150, you can learn more about it at <a href="https://marlinfw.org/docs/gcode/M150.html">Marlin FW site</a>.</p>


Status LED explained (MK4/XL)

<p>It is recommended to regularly take some time to maintain your Original Prusa XL. This should be done even if the printer is working perfectly. <strong>The inspection and maintenance of its various components should be done every ~200-300 hours of print time</strong>.</p>
<h3>Useful tools</h3>
<p>Besides the usual tools, such as Allen keys, needle-nose pliers, and IPA (IsoPropyl Alcohol) + paper towels, you might need:</p>
<ul>
<li><strong>Compressed air</strong>: also known as canned air. Be sure to not hold it upside down while spraying - otherwise, you could damage any electronic components while trying to clean them.</li>
<li><strong>Brush</strong>: a small brass brush is a useful tool for cleaning the heaterblock. If you don't have a brass brush any brush with hard bristles will do the job. </li>
<li><strong>Prusa Lubricant</strong>: a tube of Prusa Lubricant is included with the Original Prusa XL. It is used in the Z-axis leadscrew paragraph. </li>
</ul>
<div class="warning-callout"><strong>DO NOT use Prusa Lubricant on the linear rails! </strong></div>
<h3>Axes check</h3>
<p>Ensure that there is no debris or dust on the <strong>linear rails</strong>. If there is, clean them using a clean paper tissue or a clean cloth <strong>with NO de-greaser</strong> and <strong>with no chemicals</strong>, as these might damage the rubber in the carriage. The factory lubrication for linear rails is effective for at least 2 years. </p>
<h3>Z-axis leadscrew</h3>
<p>After ~500 hours of print time, lubricate the Z-axis leadscrews: apply <strong>a tiny bit of Prusa Lubricant</strong> on the Z-axis leadscrews. After this, move the Z-axis all the way down, and then all the way up. </p>
<h3>Belt</h3>
<p>Attach the belt tensioner on the top belt on the X-axis. The belt tensioner has a pointer, check if it is in the optimal range. The ideal position of the pointer is in the center area, closer to the max mark.</p>
<h3>Flexible steel sheet</h3>
<p>All flexible steel sheets should be cleaned regularly to ensure adhesion, but the exact methods and washing solutions can differ depending on your type of sheet.</p>
<p>You can find more information on how to take care of your flexible steel sheet <a href="http://help.prusa3d.com/article/flexible-steel-sheets-guidepost_2195">in this article</a>.</p>
<div class="warning-callout">Acetone should be used sparingly for cleaning, and only be used on the Smooth steel sheet! <strong>Never use acetone on the Textured or Satin steel sheet </strong>as the surface will be permanently damaged.</div>
<h3>Fans</h3>
<p>The Original Prusa XL is equipped with a hotend fan, and with a print fan. The printer can detect if any of its fans stop spinning. However, that does not mean you should not check them during maintenance. Dust or plastic build-up can decrease their efficiency or even damage them.</p>
<p>Both fans should be checked and cleaned after a few hundred hours of printing. With the fan <strong>not</strong> moving, dust can be removed with compressed air in a spray can, small plastic threads can be removed with tweezers.</p>
<div class="note-callout">Do not blow compressed air on a running fan: the fan can get damaged this way. </div>
<h3>Nextruder</h3>
<div class="warning-callout">When accessing the extruder parts, do not open the gearbox: this action can cause issues on the extrusion, and will <strong>void the printer warranty</strong>. </div>
<p>The primary gear and the bearings attached to the Idler Shaft in the extruder do not need any lubricant. Over time, a deposit of filament debris can form in the grooves of the primary gear, which then causes insufficient filament extrusion. Access the extruder by lifting the Idler Nut, and then moving the Idle Shaft. You can blow away the dirt with compressed air, or use a brass brush or an ordinary toothpick. Use the access hole on the side of the extruder. </p>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/2023/02/XL_Extruder_PrimaryGear_TipTensionBolts.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Regular printer maintenance (XL)" alt="" width="600" height="450" loading="lazy" /></p>
<h3>Heaterblock</h3>
<div class="warning-callout"><strong>CAUTION</strong>: Heated parts can cause severe burns!</div>
<p>In case the heaterblock is covered with plastic, it can affect its thermal properties. To clean it, heat the nozzle for 3 to 5 minutes at 250 °C, and <strong>turn the printer off</strong>. Immediately after that use a small brass brush to clear away any old plastic stuck on the nozzle and heaterblock. Be extra careful around the fragile wires that join the heaterblock.</p>
<h3>Electronics</h3>
<p>Every ~600-800 printing hours access the electronic boards for a visual check.</p>
<div class="warning-callout">Before touching the electrical connections, please make sure that the printer is <strong>fully cooled down</strong>, <strong>switched off</strong>, and <strong>unplugged from the main power source for at least 10 minutes</strong>.</div>
<ul>
<li>Check if there are any pinched or worn cables on the printer.</li>
<li>Access the electronic boards and blow compressed air in between the cables to get rid of dust. </li>
<li>Check the connection of all of the wires on the electronic boards. </li>
</ul>
<h3>Firmware and software</h3>
<p>You should always be using the latest <strong>stable </strong>firmware version that we have published for your specific printer model. You can check the firmware version you have, by navigating to <em>LCD menu - Info - Version info</em>. </p>
<p>We also recommend using the latest version of our <a href="http://help.prusa3d.com/article/install-prusaslicer_1903">PrusaSlicer</a>, as it enables you to <strong>enjoy all the features</strong> of your printer. It even saves information about the printer model, nozzle diameter, and firmware version directly into the g-code file so that the printer can warn you if anything is out of date or incompatible.</p>


Regular printer maintenance (XL)

<p>A clogged nozzle or hotend is a common issue for FFF/FDM printers. If there are no issues, the filament is pushed in the hotend, melted, and then extruded through the nozzle. However, if the nozzle is damaged or there are impurities in the filament it might get stuck in the hotend, clogging the printer.</p>
<h3>How to spot clogged nozzle/hotend?</h3>
<h4>Visual check</h4>
<ul>
<li>Is the filament reaching the nozzle? Check if the filament goes past the Nextruder gear.</li>
<li>Is the filament coming out of the nozzle? Pay attention when loading the filament.</li>
<li>Partial clog - gaps and missing layers</li>
<li>Partial clog - filament curling up and sticking to the nozzle</li>
</ul>
<h4>Soundcheck</h4>
<p>Check if there are clicking noises from the extruder</p>
<ul>
<li>If there is a loud clicking noise, this most likely suggests the nozzle is clogged or deformed </li>
<li>If there is a light clicking noise, this can most likely point to the gearing</li>
</ul>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/81f35c769288a087.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Clogged hotend (XL)" alt="" width="400" height="400" loading="lazy" /></p>
<h4>Partial clog</h4>
<p>Sometimes the clog is partial, meaning that the printer is able to push some filament through, but it is not enough to print the object properly, leading to visible gaps and missing layers. An early sign of a clogged nozzle is that the filament is not extruded consistently, curls up, and sticks to the nozzle.</p>
<h4>Extruder clicking</h4>
<p>The hotend or the nozzle is partially or fully clogged and the internal resistance against the flow of the filament is greater than what the gears are able to push. As a result, the gears are skipping leading to the “clicking” noise and in most scenarios also to the grinding of the filament.</p>
<h3>How to fix the clogged printer? </h3>
<p>Choosing the right method depends on whether <strong>you are able to at least partially load/unload the filament or whether the printer is fully jammed</strong> and refusing the move the filament even a little.</p>
<p>Before you start fixing the printer, try unloading the filament and removing it completely. If you are unable to do it, it might indicate a more serious problem, but we will deal with this one as well.</p>
<p>Also, move the heatbed downwards from <em>LCD Menu - Control - Move Axis - Z-axis</em> or by long-pressing the control knob, this way you will get better access to the parts that are clogged.</p>
<h4>Extruder idler screws</h4>
<p>The extruder includes two idler tension screws, to set the correct distance between the drive gear and the two driven gears. These are set to the optimal position at the factory. In case of an intervention on that part, you can adjust the idler tension screws to their optimal position: the tips of the screws must be aligned with the front surface of the Idler Nut. After that, close the Idler Block.</p>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/2023/03/DSC_3455-1.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Clogged hotend (XL)" alt="" width="600" height="450" loading="lazy" /></p>
<h4>Gears</h4>
<p>Over time, a deposit of filament debris can form in the grooves of the feeding gear, which then causes insufficient filament extrusion. Access the extruder by lifting the Idler Nut, and then moving the Idle Shaft. You can blow away the dirt with compressed air, or use a brass brush or an ordinary toothpick. Use the access hole on the side of the extruder. </p>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/2023/02/XL_Extruder_PrimaryGear_TipTensionBolts.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Regular printer maintenance (XL)" alt="" width="600" height="450" loading="lazy" /></p>
<h4>Nozzle </h4>
<div class="warning-callout"><strong>Do not touch the hotend while the printer is at a hot temperature.</strong> <strong>Heated parts can cause severe burns!</strong> </div>
<div>Follow these steps to clean the nozzle: </div>
<ol>
<li> Heat the nozzle to the appropriate temperature according to the filament material you will be printing from. First, introduce the filament, then insert an <strong>acupuncture needle</strong> (included in the package) or a thin wire (0.3-0.35 mm) into the nozzle from below to a depth of approximately 1-2 cm. <strong>Use protective gloves if material suddenly starts to flow from the nozzle</strong>.</li>
<li> Select the Load Filament option from the LCD menu and check that the nozzle is actually pushing the filament.</li>
<li> Insert the wire or acupuncture needle into the nozzle again and repeat the whole procedure several times. If the filament is extruded correctly, the nozzle is clean.</li>
</ol>
<div class="tip-callout">Are you still having issues? Contact our <a href="http://help.prusa3d.com/article/customer-support_2287">support team</a> and let them know that you tried to fix the issue with these instructions. We will take it from there.</div>


Clogged hotend (XL)

<p>On the Original Prusa XL, adjusting the belt to the optimal tension is crucial to achieving good quality on the prints. A loose belt can cause <a href="http://help.prusa3d.com/article/layer-shifting_2020">Layer shifting</a>, <a href="http://help.prusa3d.com/article/ghosting_1801">Ghosting</a>, or other print abnormalities, like getting an irregular shape instead of a perfect circle. An over-tightened belt can cause an irregular movement in the X and Y axes. </p>
<p>The Original Prusa XL geometry is <strong>CoreXY</strong>: it has one belt for both X and Y axes. </p>
<h3>Necessary tools</h3>
<p>Prepare the <strong>belt tensioner</strong>, and a 2.5mm hexagonal Allen key.</p>
<div class="tip-callout">The printable file and printing instructions for the belt tensioner are available <a href="https://www.printables.com/model/46639-tension-meter-for-the-gt2-belts-of-i3-mk3s-or-prus/files">on this page</a>.</div>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/2022/12/f4b3fa28c84794da_painted.webp" sizes="(min-width: 1024px) 820px, 100vw" srcset="Adjusting belt tension (XL)" alt="" width="500" height="400" loading="lazy" /></p>
<h3>Belt tensioner</h3>
<p>The belt tensioner has three areas: the <strong>min </strong>area on one side, the <strong>max</strong> area on the other side, and a central area between these two. </p>
<h3>Checking the belt tension</h3>
<p>Attach the belt tensioner on the top belt on the X-axis. The belt tensioner has a pointer, check its position: the ideal position of the pointer is in the center area, closer to the <strong>max</strong> mark. </p>
<div class="tip-callout">If your belt tensioner pointer is on the <strong>min</strong> area, follow the complete procedure. <br />If the pointer is between the two marks, but closer to the <strong>min</strong> position, skip the <strong>pre-tensioning</strong> procedure, and adjust the belt tension slightly, by following the <strong>tensioning</strong> and <strong>aligning</strong> paragraphs. </div>
<table style="border-collapse: collapse; width: 100%;" border="0">
<tbody>
<tr>
<td style="width: 48.805%;"><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/2023/03/XL_belt041.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Adjusting belt tension (XL)" alt="" width="400" height="300" loading="lazy" /></td>
<td style="width: 48.9057%;"><img decoding="async" src="https://help.prusa3d.com/wp-content/uploads/2023/03/XL_belt03.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Adjusting belt tension (XL)" alt="" width="400" height="300" loading="lazy" /></td>
</tr>
</tbody>
</table>
<h3>Adjusting the belt</h3>
<h4>Pre-tensioning</h4>
<p>Pre-tension the belt by tightening the screws on both Y-axis rails. Start by tightening the screw on the right Y-axis rail, then tighten the left Y-axis rail screw by roughly the same amount. At this stage, we aim for the belt to not feel completely loose if pulled. </p>
<p>After pre-tensioning the belt, move the X-axis assembly back and all the way to the front, and move the X-carriage with the extruder all the way to the left. </p>
<h4>Tensioning</h4>
<div class="tip-callout">Before each tensioning, ensure that the X-axis assembly is all the way to the front, and the extruder all the way to the left. </div>
<p>Attach the belt tensioner on the top belt on the X-axis, and see the pointer position. </p>
<p>Tighten the belt by tightening the screws on both Y-axis rails. Start with the screw on the right Y-axis rail, tighten it slightly, then tighten the left Y-axis rail screw by the same amount.</p>
<p>Repeat the procedure, with small, multiple adjustments, until the pointer on the belt tensioner is in the center area, close to the <strong>max</strong> line. </p>
<p>If the belt tensioner pointer is on the <strong>max</strong> area, loosen the belt by loosening the screw on the right Y-axis rail, and then loosening the screw on the left Y-axis rail by the same amount. </p>
<p>After each adjustment, both in tightening or loosening the belt, move the X-axis assembly back and all the way to the front. Then check the pointer on the belt tensioner, and repeat the tensioning procedure until the belt tensioner pointer is at the optimal position.</p>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/2023/03/XL_belt02.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Adjusting belt tension (XL)" alt="" width="500" height="375" loading="lazy" /></p>
<h4>Alignment</h4>
<p>It is crucial to have perfect alignment between the right and left sides. </p>
<div class="tip-callout">Tightening the right Y-axis rail reduces the space between the CoreXY Front Left and the X-axis on the right side but creates space on the left side, and vice versa. </div>
<p>Move the X-axis all the way to the front of the printer, and move the X-carriage with the extruder all the way to the left. </p>
<p>Test the alignment by squeezing the CoreXY Front Left and the X-axis on either side: there should be no play between the parts. If there is play, tighten the screw on the same side slightly, move the X-axis assembly back and all the way to the front, and test the alignment again on both sides. </p>
<p>Repeat the same procedure until both sides are perfectly aligned and without any play. Once at this stage, check the belt tension, both on the upper and on the lower belt, by attaching the belt meter to either belt: the pointer has to be in the same position for both. </p>
<p>In case there is a difference on the test, slightly tighten the screw on the side:</p>
<ul>
<li>tighten the right side to tension the upper belt</li>
<li>tighten the left side to tension the lower belt</li>
</ul>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/2023/03/XL_belt01.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Adjusting belt tension (XL)" alt="" width="500" height="375" loading="lazy" /></p>
<p> </p>


Adjusting belt tension (XL)

<h3>What happened?</h3>
<p>The printer displays the message <strong>"Failed to home the X-axis, make sure there is no obstacle on X-axis or Y-axis."</strong></p>
<p>Error name: Homing error X</p>
<p>Error code: #17304</p>
<p>The error is most likely caused by a bad movement of the tool head along the X-axis. </p>
<h3>How to fix it? </h3>
<h4>Make sure the X-axis can move correctly</h4>
<p>Make sure there are no obstructions in the path of the X-axis. For example, there might be a piece of filament stuck around the belt, or on a linear rail, from a previous print. </p>
<h4>Check the tension of your belts</h4>
<p>Attach the belt tensioner on the top belt on the X-axis, and check where the pointer is. Repeat the test for the bottom belt on the X-axis. The ideal position of the pointer is in the center area of the belt tensioner, closer to the max mark. In case there is any difference between the two results, or the pointer on the belt tensioner is not in its ideal position, it will be necessary to adjust the belt tension. </p>


Homing error X #17304 (XL)

<p>On the Original Prusa XL, the <strong>selftest </strong>checks for issues in the assembly of the printer, its wiring and the electronic components. It is the first part of the Calibration Wizard, which is prompted automatically when you turn on the printer for the first time or after a Factory reset (XL). After the initial calibration is completed, the selftest can be initiated in <em>LCD Menu - Calibration - Selftest</em>.</p>
<div class="note-callout">During the selftest, do not manipulate or touch the printer, unless the printer prompts an action with instructions on the display. </div>
<div>
<div class="tip-callout">If the printer is placed on an unstable surface or if there is another running 3D printer next to it, it may affect the accuracy of the calibration negatively. The printer should be placed on a stable surface. </div>
</div>
<h3>Selftest procedure checks</h3>
<ul>
<li>Test of the extruder and the print fan</li>
<li>Test of the X, Y, and Z axis</li>
<li>Proper connection of the heated bed and the hotend</li>
<li>Loadcell test</li>
<li>Setting up the filament sensor </li>
</ul>
<h3>Selftest results</h3>
<p>During the selftest, its results are shown on the screen, indicating success or fail for each point. Alterantively, the results can be shown at any time on the following path: <em>LCD Menu - Calibrate - Diagnostics - Show selftest results</em>.</p>
<h3>Selftest errors</h3>
<h4>Test of the extruder and the print fan</h4>
<p>The Original Prusa XL selftest procedure can determine which of the fans doesn't work. Check the one that is diagnosed as <strong>not OK</strong>.</p>
<ul>
<li>Make sure that both of your fans are correctly connected to the Dwarf board.</li>
<li>Check for any blockage that could prevent either of the fans from spinning.</li>
</ul>
<h4>Test of the X, Y, and Z axis</h4>
<p>The printer can determine if the components are moving correctly along each axis. </p>
<p>In case of an issue on the X-axis, or on the Y-axis, make sure that there is no obstacle to the movement, and <a href="http://help.prusa3d.com/article/adjusting-belt-tension-xl_401793">readjust the belt tension</a>. </p>
<h4>Proper connection of the heated bed and the hotend</h4>
<p>The selftest can determine a fault during the heating of a component, and the affected component. </p>
<p>Heat up the affected component in [LCD Menu - Settings - Preheat], and see if any error appears: if it does, the error should have a QR code that redirects to the article that describes how to troubleshoot that particular error. </p>
<div class="tip-callout">Contact our <a href="http://help.prusa3d.com/article/customer-support_2287">customer support</a> if you are on a different case, or in case of any doubts. </div>
<h4>Loadcell test</h4>
<p>A functioning <strong>loadcell</strong> is fundamental for the Original Prusa XL to detect that the nozzle is close enough to the steel sheet for printing, and to avoid damage that would be caused by the nozzle digging into the steel sheet. </p>
<ul>
<li>Make sure that the loadcell is correctly connected to the Dwarf board. </li>
<li>Make sure that the surface the printer is on is as stable as possible: any form of vibration propagated to the surface under the printer, or a not fully stable surface under the printer, might cause a false reading on the loadcell, causing it to fail the selftest. </li>
</ul>
<h4>Filament sensor</h4>
<p>The Original Prusa XL is equipped with <strong>two filament sensors</strong>: the first one is located on the side, close to the input of the PTFE tube where you feed the filament. The second one is located in the extruder. Both filament sensors are necessary for the correct filament retraction: when the sensor on the side detects that the filament has run out, the filament will be retracted in time. </p>
<ul>
<li>Make sure that the extruder filament sensor is correctly connected to the Dwarf board.</li>
<li>Make sure that the side filament sensor is correctly connected.</li>
</ul>


Selftest failed (XL)

<p>This is the current list of supplemental statements valid for users of Prusa websites:</p>
<ul>
<li><a href="https://www.prusa3d.com/page/supplemental-statement-for-california-consumers_233924">Supplemental Statement for California Consumers</a> valid from 1st March 2023</li>
</ul>


Supplemental Statements valid on Prusa websites

<h3>What happened?</h3>
<p>The printer displays the message <strong>"Failed to home the Y-axis, make sure there is no obstacle on X-axis or Y-axis."</strong></p>
<p>Error name: Homing error Y</p>
<p>Error code: #17305</p>
<p>The error is most likely caused by a bad movement of the tool head along the Y-axis. </p>
<h3>How to fix it?</h3>
<h4>Make sure the Y-axis can move correctly</h4>
<p>Make sure there are no obstructions in the path of the Y-axis. For example, there might be a piece of filament stuck around the belt, or on a linear rail, from a previous print. </p>
<h4>Check the tension of your belts</h4>
<div class="tip-callout">The Original Prusa XL geometry is <strong>CoreXY</strong>: it has one belt for both X and Y axes. </div>
<p>Attach the belt tensioner on the top belt on the X-axis, and check where the pointer is. Repeat the test for the bottom belt on the X-axis. The ideal position of the pointer is in the center area of the belt tensioner, closer to the max mark. In case there is any difference between the two results, or the pointer on the belt tensioner is not in its ideal position, <a href="http://help.prusa3d.com/article/adjusting-belt-tension-xl_401793">adjust your belt to the optimal tension</a>. </p>
<h3> </h3>


Homing error Y #17305 (XL)

<h3>What happened?</h3>
<p>The printer displays the message "<strong>Failed to home the Z-axis, make sure the loadcell is working</strong>".</p>
<p>Error name: Homing error Z</p>
<p>Error code: #17301 </p>
<h3>How to fix it?</h3>
<h4>Check if the nozzle is not loose</h4>
<div class="warning-callout">Before proceeding further, make sure that the printer is <strong>FULLY COOLED DOWN AT ROOM TEMPERATURE</strong>, and <strong>OFF</strong>! </div>
<p>You can check this by holding the heater block <strong>(make sure that the nozzle is not heated!)</strong>, and use the Torx TX8 as shown in the picture to tighten the set screw. The nozzle has to be unable to move. </p>
<h4><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/2022/12/749ba49c3793b159_painted.jpeg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Homing error #17301 (XL)" alt="" width="500" height="375" loading="lazy" /></h4>
<h4>Test the loadcell</h4>
<div class="warning-callout"><strong>MAKE SURE THAT THE NOZZE IS NOT HEATED BEFORE PROCEEDING TO THIS TEST! </strong></div>
<p>A fault in the <a href="https://help.prusa3d.com/preview/article/loadcell-xl">loadcell</a> can trigger a homing error. Ensure that the printer is fully cooled down, go to <em>LCD Menu - Calibration - Diagnostics - Loadcell Test</em>, and tap the nozzle from the bottom.</p>
<p>During the test, see if the numbers shown on the screen will change. In case the number does not change when you tap the nozzle, please contact our <a href="http://help.prusa3d.com/article/customer-support_2287">customer support</a>.</p>
<h4>Reduce vibrations</h4>
<p>Any form of vibration propagated to the surface under the printer, or a not fully stable surface under the printer, might cause a false reading on the loadcell, triggering the homing error. </p>
<p>A printer that is in operation next to your Original Prusa XL can be a possible cause of vibrations. An easy solution to dampening the noise and vibration of a printer is to add some additional padding underneath the printer. </p>


Homing error Z #17301 (XL)

<p>If the filament is not loaded into the extruder, yet the printer is trying to pull the filament inside, there might be a hardware problem in some of the extruder components: we will examine the causes and fixes in this article. </p>
<h3>Retry procedure</h3>
<p>After an attempt at loading filament, the printer will prompt a screen, where it is asked if the filament color is correct. If the filament is not oozing from the nozzle at this stage, push the filament towards the extruder, and after that, select "retry". </p>
<h3>Idler tension screws</h3>
<p>The extruder includes two idler tension screws, to set the correct distance between the drive gear and the two driven gears. These are set to the optimal position at the factory. In case of an intervention on that component, it will be necessary to adjust the idler tension screws to their optimal position: the tips of the screws must be aligned with the front surface of the Idler Nut. After that, close the Idler Block.</p>
<p><img decoding="async" loading="lazy" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/2023/03/XL_Extruder_Open.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Filament not loading (XL)" alt="" width="500" height="375" /></p>
<h3>Clogged hotend</h3>
<p>Follow the instructions on the dedicated article on <a href="http://help.prusa3d.com/article/clogged-hotend-xl_401294">how to spot and fix a clogged hotend</a>. </p>
<div class="tip-callout">Are you still having issues? Contact our <a href="http://help.prusa3d.com/article/customer-support_2287">support team</a> and let them know that you tried to fix the issue with these instructions. We will take it from there.</div>


Filament not loading (XL)

<h3>What happened?</h3>
<p>The Original Prusa XL will display the message "<strong>Extruder Maxtemp error: Check the thermistor wiring for potential damage</strong>" if the printer's nozzle temperature goes above 295 ºC at any point. This is a safety feature to prevent printer damage and fire. In this case, the printer will stop the heating and display the message on the screen. The printer then waits for the user to inspect all parts and if needed fix the issue.</p>
<p>Error name: Hotend Maxtemp error</p>
<p>Error code: #17206</p>
<h3>How to fix it?</h3>
<p>The error might indicate some issue with the wiring, either the heater or the thermistor cables are possibly damaged.</p>
<h4>A visual inspection</h4>
<p>Before breaking out the multimeter you should check the Dwarf board, where the thermistor and heater reside, to ensure that no wires have broken off, or are disconnected. </p>
<div class="warning-callout">Before you start, make sure:</p>
<ul>
<li>the filament is unloaded from the extruder</li>
<li>the printer is turned OFF and unplugged from electricity</li>
<li>the hotend and the heatbed are cooled down to ambient temperature</li>
</ul>
</div>
<div class="note-callout">Since we will handle tools and work with the extruder high above the heatbed, it is necessary to protect it.</div>
<p>Place an empty Prusament cardboard box approximately to the front center part of the heated. Move the X-axis all the way to the front side of the printer, and move the extruder approximately to the center of the X-axis.</p>
<p>Open the dwarf-cover-door to access the Dwarf board.</p>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/2023/04/dc053446459b18b4711ea5b21c3b0c74.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Extruder Maxtemp error #17206 (XL)" alt="" width="600" height="450" loading="lazy" /></p>
<p>Check that all the connectors are secure in their sockets, according to the picture below. Focus on the thermistor and heater cables. Though unlikely, rough shipping or handling could have shaken the heater or thermistor cables loose. </p>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/2023/04/020196d1dade2d87f7b71350ce347761_painted.jpeg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Extruder Maxtemp error #17206 (XL)" alt="" width="600" height="450" loading="lazy" /></p>
<h4>Checking the resistance</h4>
<p>The table below describes the correct resistance for each part, as well as what scale you should set your meter to. The hotend thermistor is rated to be <strong>100 kΩ at 25 °C.</strong> To be realistic, with a varying temperature between 20 °C and 30 <strong>°</strong>C, <strong>you can expect a wider range of readings (~80-125 kΩ).</strong></p>
<p>There can be micro-fractures in the cable, breaking the connections only at certain positions. Therefore, try to move the cable a bit while doing the measurement and see if the value changes drastically.</p>
<table style="width: 100%; height: 162.014px;">
<tbody>
<tr style="height: 59.3472px;">
<td style="width: 30.5147%; height: 59.3472px;">
<h5>Part</h5>
</td>
<td style="width: 39.951%; height: 59.3472px;">
<h5>Resistance</h5>
</td>
<td style="width: 23.0392%; height: 59.3472px;">
<h5>Multimeter scale</h5>
</td>
</tr>
<tr style="height: 51.3333px;">
<td style="width: 30.5147%; height: 51.3333px;">
<p>Hotend thermistor </p>
</td>
<td style="width: 39.951%; height: 51.3333px;">
<p><strong>[80 kΩ - 125 kΩ]</strong></p>
</td>
<td style="width: 23.0392%; height: 51.3333px;">
<p>200kΩ</p>
</td>
</tr>
<tr style="height: 51.3333px;">
<td style="width: 30.5147%; height: 51.3333px;">
<p>Hotend heater</p>
</td>
<td style="width: 39.951%; height: 51.3333px;">
<p><strong>[12.3 Ω - 15.1 Ω]</strong></p>
</td>
<td style="width: 23.0392%; height: 51.3333px;">
<p>200Ω</p>
</td>
</tr>
</tbody>
</table>
<div class="warning-callout"><strong>The part should be cold (room temperature) and unplugged when measuring the resistance!</strong></div>


Extruder Maxtemp error #17206 (XL)

<h3>What happened?</h3>
<p>On the Original Prusa XL, communication with the peripheral boards (e.g. Dwarf board) is achieved using the <strong>MODBUS protocol</strong>. In MODBUS, there are two types of devices: the <strong>master </strong>and the <strong>slave</strong>, also known, respectively, as <strong>client </strong>and <strong>server</strong>. On Original Prusa XL firmware, the master is the XLBuddy, and each slave is called <strong>puppy</strong>.</p>
<p>In this context, the word <strong>discovery</strong> refers to the process of identifying each <strong>puppy</strong>, and determining their available functions and communication parameters. In case none of the puppies respond to the XLBuddy requests in this phase, the printer will show the message: "<strong>Puppy discovery error. No puppy found</strong>".</p>
<p>Error name: Puppy discover err</p>
<p>Error code: #17513</p>
<p>The error most likely indicates an issue with a loose, broken, or incorrect connection. </p>
<h3>How to fix it?</h3>
<h4>A visual inspection</h4>
<div class="warning-callout">Before accessing any of the electronic boards, ensure that the printer is <strong>fully cooled down</strong>, and <strong>switched off for at least 10 minutes</strong>. </div>
<p>Inspect the wiring on the Sandwich board for a cable positioned into an incorrect port, a loose connection, or a visibly broken cable. </p>
<h4>Re-flash firmware</h4>
<p><a href="https://help.prusa3d.com/downloads" target="_blank" rel="noopener">Download the firmware</a> and if necessary the bootloader, and transfer it to your USB drive. Make sure to unmount the drive from your operating system before physically removing it.</p>
<p>Insert the USB drive back into the printer and reboot the printer using the reset button directly next to the knob to initiate the flashing procedure. In case the procedure does not start, reboot the printer again by pressing the same reset button, and while the printer is booting up, press once the rotating knob.</p>
<div class="tip-callout">Are you still having issues? Contact our <a href="http://help.prusa3d.com/article/customer-support_2287">support team</a> and let them know that you tried to fix the issue with these instructions. We will take it from there.</div>


Puppy error #17513 (XL)

<h3>What happened?</h3>
<p>The Original Prusa XL electronic boards have memory, including RAM (Random Access Memory). In rare cases, the RAM can be fully consumed, with the printer unable to perform any further action: when this happens, the printer will show the message: <strong>"Dynamic allocation failed - out of memory. Reset the printer."</strong></p>
<p>Error name: Out of memory</p>
<p>Error code: #17507</p>
<h3>How to fix it?</h3>
<p><strong>Restarting the printer</strong> is expected to resolve the error, and this is not expected to occur again. In case a restart does not resolve it, please contact <a href="http://help.prusa3d.com/article/customer-support_2287">our customer support</a>, we will take it from here. </p>


Out of memory #17507 (XL)

<h3>What happened?</h3>
<p>The Original Prusa XL is equipped with a <a href="https://help.prusa3d.com/preview/article/loadcell-xl"><strong>loadcell</strong></a>, to detect that the nozzle is close enough to the steel sheet for printing, and to avoid damage that would be caused by the nozzle digging into the steel sheet. </p>
<p>The printer firmware expects a measurement sample from the loadcell to occur within a specified time. In case this does not happen, the printer will show the message <strong>"There was a timeout while waiting for measurement sample, please repeat the action."</strong></p>
<p>Error name: Loadcell timeout</p>
<p>Error code: #17528</p>
<h3>How to fix it? </h3>
<h4>A visual inspection</h4>
<div class="warning-callout">Before you start, make sure:</p>
<ul>
<li>the filament is unloaded from the extruder</li>
<li>the printer is turned OFF and unplugged from electricity</li>
<li>the hotend and the heatbed are cooled down to ambient temperature</li>
</ul>
</div>
<div class="note-callout">Since we will handle tools and work with the extruder high above the heatbed, it is necessary to protect it.</div>
<div>Place an empty Prusament cardboard box approximately to the front center part of the heatbed. Move the X-axis all the way to the front side of the printer, and move the extruder approximately to the center of the X-axis.</div>
<div> </div>
<div><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://help.prusa3d.com/wp-content/uploads/2023/03/5ac820162657e8e0_painted.jpeg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Loadcell not calibrated #17523 (XL)" alt="" width="500" height="375" loading="lazy" /></div>
<p>Open the dwarf-cover-door to access the Dwarf board. The loadcell connector is on the bottom left, check it for any loose cable, disconnected cable, or visible damage. </p>
<table style="border-collapse: collapse; width: 100%;" border="0">
<tbody>
<tr>
<td style="width: 48.805%;"><img decoding="async" src="https://help.prusa3d.com/wp-content/uploads/2023/02/27238ac3f74c4dfc_painted.jpeg" alt="" width="400" height="300" loading="lazy" /></td>
<td style="width: 48.9057%;"><img decoding="async" src="https://help.prusa3d.com/wp-content/uploads/2023/03/9eff71e4b385efb4_painted.jpeg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Loadcell not calibrated #17523 (XL)" alt="" width="400" height="300" loading="lazy" /></td>
</tr>
</tbody>
</table>
<h4>Re-calibrate the loadcell</h4>
<div class="warning-callout">Do not manipulate or touch the printer unless the instructions on the printer screen prompt you to do so.</div>
<p>Navigate to <em>LCD Menu - Control - Calibration and test - Loadcell test</em> to restart the loadcell calibration.</p>
<p>During the test, you will be asked to tap the nozzle at a specific time, and a progress bar on top of the screen will be filled. If the progress bar is not filled or the printer shows any errors, please contact our <a href="http://help.prusa3d.com/article/customer-support_2287">customer support</a>.</p>


Loadcell timeout #17528 (XL)


<ul>
<li>Initial release for Original Prusa XL</li>
</ul>


1.00

4.5.3


<ul>
<li>Improved 'Monotonic lines' fill pattern</li>



<li>Improved Acceleration control</li>



<li>Specific object arrangement for XL</li>



<li>Original Prusa XL profiles</li>



<li>Updated translations</li>



<li>Bugfixes</li>
</ul>


2.5.1


<ul>
<li>Original Prusa MK4 profiles</li>
</ul>


2.5.2


<ul>
<li>New Home screen </li>



<li>Homing improvements</li>



<li>Changes to Live Adjust Z</li>



<li>Footer Items settings improved&nbsp;</li>



<li>Prusa Connect and PrusaLink improvements</li>



<li>Improvements to the Factory Reset feature&nbsp;</li>



<li>Calibrations and Tests on improvements</li>



<li>Tool changer usage statistics</li>



<li>Bugfixes</li>
</ul>


Original Prusa XL

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