UV LEDs

The UV LED panel emits UV light through the mask shown on the print display and solidifies (cures) the resin in the tank, creating the desired object layer by layer. Must be calibrated if replaced using the Print display calibrator.

QR Error codes

This is an advanced system for displaying error screens providing more useful information to the user. In case of an issue, the printer will display the name of the error followed…

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Directory not empty #10546 (SL1/SL1S)

What happened? The printer is displaying the message: The directory is not empty. Error name: Directory not empty Error code: #10546 This error is shown when you try to remove…

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Cannot remove project #10545 (SL1/SL1S)

What happened? The printer is displaying the message: Removing this project is not possible. The project is locked by a print job. Error name: Cannot remove project Error code:…

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Mask noavail warning #10709 (SL1/SL1S)

What happened? The printer is displaying the message: Print mask is missing. Error name: Mask no avail warning Error code: #10709 This error shows when the print mask part of the…

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Calibration project is invalid #10543 (SL1/SL1S)

What happened? The printer is displaying the message: Calibration project is invalid. Error name: Calibration project is invalid Error code: #10543 This error is shown when the…

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Expect overheating #10714 (SL1/SL1S)

What happened? The printer is displaying the message: Incorrect RPM reading of the fan. The print may continue, however, there's a risk of overheating. Warning name: Expect overheating Warning…

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Resin low #10712 (SL1/SL1S)

What happened? The printer is displaying the message: Measured resin volume is too low. The print can continue, however, a refill might be required. Warning name: Resin low Warning…

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Object cropped warning #10710 (SL1/SL1S)

What happened? The printer is displaying the message: Object was cropped because it does not fit the print area. Warning name: Object cropped warning Warning code: #10710 This…

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Wrong printer model #10544 (SL1/SL1S)

What happened? The printer is displaying the message: This project was prepared for a different printer. Error name: Wrong printer model Error code: #10544  This error informs…

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Project analysis failed #10542 (SL1/SL1S)

What happened? The printer is displaying the message: Analysis of the project failed. Error name: Project analysis failed Error code: #10542 The printer can fail to analyze the…

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Project is corrupted #10541 (SL1/SL1S)

What happened? The printer is displaying the message: Opening the project failed. The file is corrupted. Please re-slice or re-export the project and try again. Error name: Project…

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Not enough layers #10540 (SL1/SL1S)

What happened? The printer is displaying the message: The project must have at least one layer. Error name: Not enough layers Error code: #10540  This error happens when the project…

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Preload failed #10503 (SL1/SL1S)

What happened? The printer is displaying the message: Image preloader did not finish successfully! Error name: Preload failed Error code: #10503 This error shows that the printer…

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Remote API error #10407 (SL1/SL1S)

What happened? The printer is displaying the message: This request is not compatible with the Prusa remote API. See our documentation for more details. Error name: Remote API error Error…

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Unauthorized #10406 (SL1/SL1S)

What happened? The printer is displaying the message: The printer uses HTTP digest security. Please enable it also in your slicer (recommended), or turn off this security option…

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Invalid API key #10405 (SL1/SL1S)

What happened? The printer is displaying the message: Please turn on the HTTP digest (which is the recommended security option) or update the API key. You can find it in Settings…

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Original Prusa SL1 vs. SL1S Speed

With a brand new high-resolution monochrome LCD, larger print platform, and all cumulative updates from the entire lifespan of the SL1, the new SL1S SPEED is a lightning-fast machine…

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Unknown printer model #10323 (SL1/SL1S)

What happened? The printer is displaying the message: The printer model was not detected. Error name: Unknown printer model Error code: #10323 This error happens when the printer…

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Resin measuring failed #10124 (SL1/SL1S)

What happened? The printer is displaying the message: Measuring the resin failed. Check the presence of the platform and the amount of resin in the tank. Error name: Resin measuring…

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Cannot read project #10539 (SL1/SL1S)

What happened? The printer is displaying the message: Opening the project failed. The file is possibly corrupted. Please re-slice or re-export the project and try again. Error…

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Boost board problem #10320 (SL1S)

What happened? The printer is displaying the message: Communication with the Booster board failed. Error name: Boost board problem Error code: #10320 This error happens when the…

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Disconnected UV LED panel #10321 (SL1/SL1S)

What happened? The printer is displaying the message: The UV LED panel is not detected. Error name: Disconnected UV LED panel Error code: #10321 This error is shown when the UV…

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A64 Overheat #10207 (SL1/SL1S)

What happened? The printer is displaying the message: A64 temperature is too high. Measured: [temp] °C!. Error name: A64 Overheat Error code: #10207 This error is presented when…

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Printer Variant Mismatch #10711 (SL1/SL1S)

What happened? The printer is displaying the message: The model was sliced for a different printer variant [SL1/SL1S]. Your printer variant is [SL1S/SL1]. Warning name: Printer…

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Top-bar Notifications (SL1/SL1S)

Starting from firmware 1.5.0, the Original Prusa SL1 will show top bar notifications. If you see an envelope on the top right of the screen near the time. To see the notifications…

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Brightness adjustment (SL1)

Starting from firmware 1.5.0, you are able to manually set the backlight intensity in the SL1. You can also configure a screensaver timer of how long the screen should be on. You…

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Invalid tilt align position #10121 (SL1/SL1S)

What happened? The printer is displaying the message: Invalid tilt alignment position. Error name: Invalid tilt align position Error code: #10121 How to fix it? Use the steps below…

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Not connected to network #10402 (SL1/SL1S)

What happened? The printer is displaying the message: The printer is not connected to the internet, please check the connection in the Settings. Error name: Not connected to network Error…

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Unexpected error #10501 (SL1/SL1S)

What happened? The printer is displaying the message: "An unexpected error has occurred. If print job is in progress, it should be finished. You can turn the printer off by pressing…

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Parameters out of range #10707 (SL1/SL1S)

What happened? The printer is displaying the message: The print parameters are out of range of the printer, the system can try to fix the project. Proceed? Error name: Parameters…

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Not enough resin #10706 (SL1/SL1S)

What happened? The printer is displaying the message: The amount of resin in the tank is not enough for the current project. Adding more resin will be required during the print. Error…

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Incorrect printer model #10705 (SL1/SL1S)

What happened? The printer is displaying the message: The model was sliced for a different printer model, please reslice. Error name: Printer model mismatch warning Error code:…

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Can't copy project #10704 (SL1/SL1S)

What happened? The printer is displaying the message: The internal memory is full, the project cannot be copied. You can continue printing - however, you must not remove the USB…

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Ambient temperature too high #10702 (SL1/SL1S)

What happened? The printer is displaying the message: The ambient temperature is too high, the print can continue, but it might fail. Error name: Ambient temp. too hot Error code:…

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Ambient temperature too cold #10703 (SL1/SL1S)

What happened? The printer is displaying the message The ambient temperature is too low, the print can continue, but it might fail. Error name: Ambient temp. too cold Error code:…

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Tower position error #10123 (SL1/SL1S)

What happened? The printer is displaying the message: Tower not in the expected position. Are the platform and tank mounted and secured correctly? Error name: Tower position error Error…

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Display test failed #10120 (SL1/SL1S)

What happened? The printer is displaying the message: Display test failed, check the connection between the display and the A64 board. Error name: Display test failed Error code:…

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Tower check failed #10118 (SL1/SL1S)

What happened? The printer is displaying the message: Tower axis check failed! Please check if the ball-screw can move smoothly in its entire range. Error name: Tower check failed  Error…

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Tilt endstop not reached #10115 (SL1/SL1S)

What happened? The printer is displaying the message: Failed to reach tilt endstop, please check that the cable is connected and repeat the action. Error name: Tilt endstop not…

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Tower endstop not reached #10114 (SL1/SL1S)

What happened? The printer is displaying the message: Failed to reach tower endstop, please check that the tower motor is connected and repeat the action. Error name: Tower endstop…

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Calibration error #10113 (SL1/SL1S)

What happened? The printer is displaying the message: The printer is not calibrated. Please run the Wizard first. Error name: Not mechanically calibrated Error code: #10113 Issued…

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Resin too low #10108 (SL1/SL1S)

What happened? The printer is displaying the message: Measured resin volume [amount] ml is lower than required for this print. Please refill the tank and restart the print. Error…

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This Wizard cannot be canceled #10522 (SL1/SL1S)

What happened? The printer displaying the message: This Wizard cannot be canceled, please finish the steps. Error name: This Wizard cannot be canceled Error code: #10522 Is not…

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File not found #10518 (SL1/SL1S)

What happened? The printer displaying the message: Cannot find the selected file!  Error name: File not found Error code: #10518 General error when a file is not found. Possible…

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Fan failure #10106 (SL1/SL1S)

What happened? The printer is displaying the message: Incorrect RPM reading of the fan. Please check its wiring and connection. Error name: Fan failure Error code: #10106 This…

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Tower moving failed #10103 (SL1/SL1S)

What happened? The printer displaying the message: Moving the tower failed. Make sure there is no obstacle in its path and repeat the action. Error name: Tower moving failed Error…

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An unexpected error has occurred #10701 (SL1)

What happened? The printer displaying the message: An unexpected error has occurred. Please restart the printer. Contact our tech support if the problem persists. Error name: An…

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File already exists! #10520 (SL1)

What happened? The printer displaying the message: File already exists! Error name: File already exists! Error code: #10520 When initiating a transfer of files to the printer,…

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Internal memory full #10516 (SL1/SL1S)

What happened? The printer displaying the message: Internal memory full, please delete some of your projects first. Error name: Internal memory full Error code: #10516 Projects…

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Cannot get update channel #10514 (SL1)

What happened? The printer displaying the message: Cannot get the update channel, please restart the printer and try again. Error name: Cannot set update channel Error code: #10514 This…

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Cannot set update channel #10513 (SL1/SL1S)

What happened? The printer displaying the message: Cannot set the update channel, please restart the printer and try again. Error name: Cannot set update channel Error code: #10513 This…

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No file to reprint #10508 (SL1)

What happened? The printer displaying the message: Error, there is no file to reprint. Error name: No file to reprint Error code: #10508 This error is displayed in case of a reprint…

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Internal error (DBUS mapping failed) #10507 (SL1/SL1S)

What happened? The printer displaying the message: Internal error (DBUS mapping failed), please restart the printer. Contact the support if the problem persists. Error name: Internal…

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Another action is already running #10506 (SL1/SL1S)

What happened? The printer displaying the message: Another action is already running. Finish this action directly using the printer's touchscreen. Error name: Another action is…

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Failed to read the configuration file #10505 (SL1)

What happened? The printer displaying the message: Failed to read the configuration file. Try to reset the printer. If the problem persists, contact support. Error name: Failed…

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Tower homing failed #10102 (SL1/SL1S)

What happened? The printer is displaying the message: Tower homing failed, make sure there is no obstacle in its path and repeat the action. Error name: Tower homing failed Error…

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Opening project failed #10504 (SL1/SL1S)

What happened? The printer displaying the message: Opening the project failed, the file is possibly corrupted. Please re-slice or re-export the project, try again. Error name:…

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Speaker test failed #10310 (SL1/SL1S)

What happened? The printer displaying the message: Speaker test failed, please check the connection and repeat the action. Error name: Speaker test failed Error code: #10310 The…

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UV led voltage error #10309 (SL1)

What happened? The printer displaying the message: UV LED voltages differ too much. The LED module might be faulty, please contact our support. Error name: UV led voltage error Error…

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Printer is not UV calibrated #10308 (SL1)

What happened? The printer displaying the message: The printer is not UV calibrated, please connect the UV calibrator and run the procedure. Error name: Printer is not UV calibrated Error…

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Resin sensor error #10307 (SL1/SL1S)

What happened? The printer displays the message: The resin sensor was not triggered. Check whether the tank and the platform are properly secured. Error name: Resin sensor error Error…

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Unexpected MC error #10306 (SL1/SL1S)

What happened? The printer displaying the message: The motion controller has encountered an unexpected error, please restart the printer. Error name: Unexpected MC error Error…

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Wrong revision of motion controller #10301 (SL1)

What happened? The printer displaying the message: Wrong revision of the motion controller. Please replace it or contact our support. Error name: Wrong revision of motion controller Error…

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Tilt homing failed #10101 (SL1/SL1S)

What happened? The printer is displaying the message: Tilt homing failed, check its surroundings, and repeat the action. Error name: Tilt homing failed Error code: #10101 Issued…

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Saving log file (SL1/SL1S)

If you encounter an issue, we may request the log file from your Original Prusa SL1. This contains a wide range of info specific to your unit. By going to the printer menu to Settings…

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De-lamination / separated layers (SL1/SL1S)

If you encounter de-lamination, separated layers, or missing layers, the cause is usually in a broken SL1/STL file. Another cause can be a faulty UV LED panel or dirt in the resin…

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Object orientation

Object orientation is crucial with (M)SLA printing. It greatly influences the resulting print quality and in the case of the SL1, which cures the whole layer at once, it directly…

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Broken supports (SL1/SL1S)

Broken supports (or missing parts of supports) are usually caused by incorrect settings in the PrusaSlicer. The supports are either too thin or the exposure time is set to a value…

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Loud noises from printer (SL1/SL1S)

When your printer emits loud noises, sounding like hammering onto sheet-metal. This can be caused by a firmware issue, or if resin has leaked into your printer through the tilt…

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UV LED heatsink overheating #10206 (SL1)

What happened? The printer displaying the message: UV LED is overheating! Check whether the heatsink is installed correctly. Error name: UV LED heatsink overheating  Error code:…

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De-lamination / separated layers (SL1/SL1S)

If you encounter de-lamination, separated layers, or missing layers, the cause is usually in a broken SL1/STL file. Another cause can be a faulty UV LED panel or dirt in the resin…

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