HP Designjet T770, T1200 Error Code List

System Error: 01.0:YZ

Problem Description: Communication with Main PCA failed

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Remove the Formatter and reinsert it again. Ensure that it connects properly in the Main PCA connector.

3. Replace the Main PCA.

4. Replace the Formatter.

System Error: 01.1:YZ

Problem Description: Error in the Main PCA

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Replace the Main PCA.

3. Replace the Formatter.

System Error: 01.2:YZ

Problem Description: Failure communicating with an Ink Supply

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Perform the Ink Delivery System diagnostic test.

- If the test finds that the ink supply is defective, replace it.

- If the test does not find any errors, remove all the ink supplies from the ISS and reboot the printer.

3. Install the ink cartridges with the printer booted in normal mode. Use the replacement option available from the Front Panel and install the cartridges one by one. If an error appears after installing a supply, the last supply you installed is defective. Replace it.

4. Check that the cables between the Left Ink Supply Station and Main PCA are not damaged and are correctly connected.

5. Replace the Left Ink Supply Station.

6. Replace the Main PCA.

System Error: 02.1:YZ

Problem Description: Problem with the Carriage PCA

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Check that the Trailing Cable is not damaged. Check that the Trailing Cable is correctly connected between the Main PCA and Carriage PCA.

3. Replace the Carriage PCA.

4. Replace the Trailing Cable and Carriage PCA Covers.

5. Replace the Main PCA.

System Error: 03:YZ

Problem Description: Problem with Power Supply Unit

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Perform the Electronics Module Test Diagnostic to troubleshoot the problem further.

3. Replace the Power Supply Unit (PSU).

System Error: 03.0:10

Problem Description: Battery of Real Time Clock ran down

Corrective action:

Replace the battery.

System Error: 06:YZ

Problem Description: Failure reading/writing NVM in Hard disk

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Replace the Hard Disk.

System Error: 11:YZ

Problem Description: Trailing Cable does not seem to be detected

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Check that the Trailing Cable is not damaged; replace it if necessary. Check that the Trailing Cable is correctly connected between the Main PCA and Carriage PCA.

3. Replace the Carriage PCA.

4. Replace the Main PCA.

System Error: 21:YZ

Problem Description: Failure moving Service Station

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Check the Primer Tubes. Reconnect the power cord and power on the printer.

2. Make sure that the Service Station path is clear. Remove any visible obstacles (screws, plastic parts, etc.) restricting the movement of the Service Station.

3. If the carriage has stopped over the service station, on the right side of the printer, check that the cutter is not activated. The cutter may be blocking the carriage over the service station, preventing the service station from performing the movement correctly. The cutter is on the left side of the carriage.

4. Perform the Service Station diagnostic test to troubleshoot the problem further.

5. Replace the Service Station.

System Error: 21.1:YZ

Problem Description: Failure moving the Primer Motor of the Service Station

Corrective action: Try the following:

1. Remove the Right Cover and make sure the cables from the Main PCA to the Service Station are connected and are not damaged.

2. Perform the Primer Motor diagnostic test (listed under the service station diagnostic test) to troubleshoot the problem further.

3. Replace the Service Station.

System Error: 21.2:YZ

Problem Description: Failure testing the length of the Service Station path

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Check the Primer Tubes. Reconnect the power cord and power on the printer.

2. Make sure that the Service Station path is clear. Remove any visible obstacles (screws, plastic parts, etc.) restricting the movement of the Service Station.

3. If the carriage has stopped over the service station, on the right side of the printer, check that the cutter is not activated. It may happen that the cutter is blocking the carriage over the service station, preventing the service station from performing the movement correctly. The cutter is on the left side of the carriage.

4. Perform the Service Station diagnostic test to troubleshoot the problem further.

5. Replace the Service Station.

System Error: 22.0:YZ

Problem Description: Left Ink Supply Station error, module 0.

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Check that the cables between the Left Ink Supply Station and Main PCA the are not damaged and are correctly connected.

3. Perform the Ink Delivery System diagnostic test to troubleshoot the problem further.

4. Replace the Left Ink Supply Station.

5. Replace the Main PCA.

System Error: 22.1:YZ

Problem Description: Left Ink Supply Station error, module 1

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Check that the cables between the Left Ink Supply Station and Main PCA are not damaged and are correctly connected.

3. Perform the Ink Delivery System diagnostic test to troubleshoot the problem further.

4. Replace the Left Ink Supply Station.

5. Replace the Main PCA.

System Error: 24:YZ

Problem Description: Ink Setup failure

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Insert the new purgers, reconnect the power cord and power on the printer.

2. Perform the Ink Delivery System diagnostic test in order to check that the bongos (pushers) go up and down to pressurize ink in the tubes and the Out of Ink sensors work properly.

3. Try purging the Ink Supply Tubes again once the printer has been restarted.

4. If the diagnostic test does not find any problem, install new cartridges in the printer and try purging the Ink Supply Tubes again. It could be that one of the cartridges is defective.

5. If the problem persists, replace the Ink Supply Tubes. You must bring purgers and ink cartridges.

Warning: 26:01

Problem Description: Ink supply error found during IDS diagnostic test. In the front panel message you will see letters representing the names of the colors of the faulty supplies.

Corrective action: Try the following:

1. Reseat the faulty ink supply and repeat the Ink Delivery System diagnostic test.

2. If the problem persists, replace the faulty ink supply and repeat the Ink Delivery System diagnostic test.

3. If the problem persists, replace the Left Ink Supply Station.

Warning: 39.1:01

Problem Description: Roll 1 switch failed (standby or resume). Roll 1 has been unloaded.

Corrective action:

There is no corrective action. This system warning code only notifies the user that the roll has been unloaded because an unexpected error occurred with Roll 1 in standby or resume operation.

Warning: 39.2:01

Problem Description: Roll 2 switch failed (standby or resume). Roll 2 has been unloaded.

Corrective action:

There is no corrective action. This system warning code only notifies the user that the roll has been unloaded because an unexpected error occurred with Roll 2 in standby or resume operation.

System Error: 41:YZ

Problem Description: Electrical fault or current limit in Media-Axis Motor

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Open the Window and check for any visible obstacles restricting the movement of the Media Advance Roller. If there is a wrinkled mass of paper inside the paper path, lift the Pinch wheels (using Media Lever) and clear the obstruction.

3. Perform the Paper Drive diagnostic test to troubleshoot the problem further.

4. Perform the Rewinder diagnostic test to troubleshoot the problem further.

5. Check that the Media Advance Drive cable is not damaged and is correctly connected to the Main PCA.

6. Replace the Media Advance Drive.

7. Replace the Main PCA.

System Error: 42:YZ

Problem Description: Electrical problem (fault, current limit, overheating) in Scan-Axis Motor

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Open the Window and check for any visible obstacles restricting the movement of the Carriage Assembly. Remove any obstacle to let the carriage move freely along the whole scan axis. If there is a wrinkled mass of paper inside the paper path, raise the pinch wheels (using the Media Lever) and clear the obstruction.

3. Check that the Scan-Axis Motor cable is not damaged and is correctly connected to the Main PCA.

4. Replace the Scan-Axis Motor.

5. Replace the Main PCA.

System Error: 45.1:YZ

Problem Description: An error with the Rewinder 1 System (Upper Rewinder) has been detected.

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Remove the paper from Roll 1. Reconnect the power cord and power on the printer.

2. Check that the Rewinder 1 cable is not damaged and is correctly connected to the Main PCA.

3. Check that the Upper Right Roll Support is correctly attached to and aligned with the Right Cover.

4. Perform the Rewinder diagnostic test to troubleshoot the problem further.

5. Replace the Upper Right Roll Support.

System Error: 45.2:YZ

Problem Description: An error with the Rewinder 2 System (Lower Rewinder) has been detected (T1200 series only).

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Remove the paper from Roll 2. Reconnect the power cord and power on the printer.

2. Check that the Rewinder 2 cable is not damaged and is correctly connected to the Main PCA.

3. Check that the Lower Right Roll Support is correctly attached to and aligned with the Right Cover.

4. Perform the Rewinder diagnostic test to troubleshoot the problem further.

5. Replace the Lower Right Roll Support.

System Error: 47:YZ

Problem Description: Starwheels motor error

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Open the Window and check for any visible obstacles restricting the movement of the Starwheel Assembly, then clear the obstruction.

3. Check that the Starwheel Assembly cable is not damaged and is correctly connected to the Main PCA.

4. Perform the Scan Axis Starwheel diagnostic test to troubleshoot the problem further.

5. Replace the Starwheel Motor.

6. Replace the Main PCA.

System Error: 48:YZ

Problem Description: PPS system failure

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Check that the Pen to Paper Space (PPS) Solenoid cable is not damaged and is correctly connected to the Main PCA.

3. Perform the Scan Axis PRS diagnostic test to troubleshoot the problem further.

4. Replace the Pen to Paper Space (PPS) Solenoid.

5. Replace the Main PCA.

System Error: 51:YZ

Problem Description: Window Sensor failure

Corrective action: Try the following:

1. Check that the Window Position Sensor cable is not damaged and is correctly connected to the Main PCA.

2. Perform the Sensors Test to troubleshoot the problem further.

3. Replace the Window Position Sensor.

System Error: 52:10

Problem Description: The printer has detected a failure in the Drop Detector.

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Check that the Drop Detector cable is not damaged and is correctly connected to the Main PCA.

3. Replace the Drop Detector.

4. Replace the Main PCA.

System Error: 55:YZ

Problem Description: Problem with the Line Sensor. The printer has detected a failure to access the Line Sensor EEPROM.

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Perform the Carriage Test to troubleshoot the problem further.

3. Check the Line Sensor connections to the Carriage PCA.

4. Replace the Line Sensor.

5. Replace the Carriage PCA.

System Error: 56:YZ

Problem Description: Drive roller analog encoder homing (also known as “zero search”) failed.

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Perform the Media Path Test to troubleshoot the problem further.

3. Replace the Encoder Disk and Encoder Sensor.

4. Replace the Main PCA.

System Error: 59.1:09

Problem Description: Two electrical parts have been replaced at the same time.

Corrective action:

Replace one part at a time, and restart the printer before replacing another.

System Error: 59.2:00

Problem Description: An unsupported or reused part has been installed.

Corrective action:

Install only new parts recommended by HP for this printer.

System Error: 60.1:YZ, 60.2:YZ

Problem Description: Initialization error

Corrective action: Try the following:

1. Switch the power off from the back of the printer, wait two minutes, then switch it back on again.

2. Check the power cord; try connecting it to another power socket.

3. Check that the printer is properly connected in all other respects.

4. Switch the power off from the back of the printer; remove the Formatter; reinsert the Formatter; switch the power on again.

5. If the error persists, get the printer log (see Appendix C: Obtaining the printer log and the diagnostics package) and contact HP with the file.

System Error: 61:YZ

Problem Description: The file format is incorrect or not supported for the current printer configuration and the printer cannot process the job.

Corrective action: Try the following:

1. Check whether the printer supports the file format (formats such as PS, PDF, TIFF and JPEG are supported by PostScript printers only).

2. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

3. Check the graphic language setting of the printer (refer to the User's Guide).

4. Resend the file to the printer.

5. Check that the printer has the latest firmware version. If not, update the firmware to the latest version.

System Error: 61:04.1

Problem Description: The PostScript fonts seem to be missing.

Corrective action:

Perform a firmware upgrade to re-install the fonts.

System Error: 61:08.1

Problem Description: The file cannot be printed because it is password-protected.

Corrective action:

Resend the file without password protection.

System Error: 63:YZ

Problem Description: Input/Output problem through the network interface of the Formatter

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Check that the Network cable is correctly connected to the Formatter.

3. Check that the printer has the latest firmware version. If not, update the firmware to the latest version.

4. Replace the Formatter.

System Error: 64:YZ

Problem Description: Input/Output problem through the USB Port

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Check that the USB cable is correctly connected to the printer.

3. Check that the printer has the latest firmware version. If not, update the firmware to the latest version.

4. Replace the Formatter.

System Error: 64.1:YZ

Problem Description: The External Hard Disk accessory does not seem to be connected

Corrective action: Try the following:

1. Switch the power off from the back of the printer. Connect the External Hard Disk accessory, check that the USB cable is properly connected and power on the printer. If the External Hard Disk accessory is not available (has been lost or broken), proceed with step.

2. If the problem persists, power off from the back of the printer. Power on the printer again while pressing the keys Menu, OK and Cancel keys simultaneously until the front panel asks “Printer configured to use External Hard Disk. Do you want to revert the printer to Internal Hard Disk?”. Confirm by pressing OK (twice). Remove the External Hard Disk accessory (if connected). The printer will restart.

3. After the printer reaches the Ready state, try connecting any other USB device (known to work properly) to the printer port where the External Hard Disk accessory should be connected.

4. If a message appears on the Front Panel reacting to the USB device just connected (such as “Please remove USB device” or “Press OK to.”), press Cancel and remove the USB Device. This means that the External Hard Disk accessory is faulty and should be replaced.

5. If nothing appears on the Front Panel reacting to the USB device just connected, the Formatter is faulty and should be replaced.

System Error: 65:YZ

Problem Description: Memory Driver Internal I/O error, I/O Socket Manager Internal I/O error

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Check that the unknown port cable is correctly connected to the printer.

3. Check that the printer has the latest firmware version. If not, update the firmware to the latest version.

4. Replace the Formatter.

5. Replace the Main PCA.

Warning: 68:YZ

Problem Description: Loss of engine counters tracking

Corrective action:

The printer will continue to function correctly, but the life counters will not continue counting until you restart the printer.

System Error: 71:03

Problem Description: Out of memory

Corrective action:

Restart the printer.

Warning: 71:04

Problem Description: Out of memory. The total memory available in the printer depends on its configuration. It is reported as HP-GL/ 2 memory or PS/PDF memory. If the amount of memory that the printer needs to process the file is more than the amount available, the printer will display this system warning. The amount of memory required for processing the file is known as the ‘display list memory’: ; The display list memory should not be confused with the file size of the print job. The size of the display list memory depends on several variables such as the resolution, file size and file content. ; The display list memory is not visible to the user, but can be consulted by engineers to troubleshoot out-of-memory issues.. ; There have been a few cases in which a print job with a relatively small file size has triggered an out-of-memory message. Such print jobs typically have a large number of objects in them or have complex objects such as raster images with gradients or objects with multiple layers.

Corrective action: Try the following:

1. Upgrade the firmware to the latest version available.

2. Decrease the print resolution to 300 dpi. NOTE: If the customer does not accept the print quality after reducing the resolution or using Econofast print mode, proceed to the workaround in step.

3. The resolution required by the printer to process the file is set by the print mode selected (Best, Normal, Fast). There is a setting available that enables you to decrease the resolution for each print mode to 300 dpi. If this setting is used, the rendering resolution will be reduced, but the output (printing) resolution will remain the default of the selected print mode. There could be an impact on Image Quality because of the reduction in the rendering resolution; this will be especially noticeable in circles and lines with very low inclination.

4. Use the ‘Econofast’ print mode. The rendering resolution will be set by default to 300 dpi. In the Paper/Quality tab of the printer properties window, select Custom options and press the Settings button. In the Custom Print Quality Options window, check the Economode box. NOTE: If the Out of Memory message still persists, proceed to the next workaround.

5. Out of Memory issues can always be solved if the processing of the job can be performed before reaching the printer. This can be done by selecting ‘Send Job as Bitmap’. The main processing of the print job will then be performed by the computer.This form of printing is recommended when the print job contains raster images, and mixed plots with raster images and lines, because the process of turning a print job made of raster images to vector images leads to a significant increase in the display list memory.

Warning: 72.02:YZ

Problem Description: A service calibration should be performed.

Corrective action:

To find out which service calibration to perform, print the calibration status. At the front panel, select the Internal Prints icon, then Service information > Print calibration status. Perform whichever calibration is needed.

Warning: 74:YZ

Problem Description: Error uploading firmware update file

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Make sure the connection between the computer and the printer is functioning properly.

3. Try to update the firmware again.

Warning: 74.1:YZ

Problem Description: Error uploading paper profile update file

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Make sure the connection between the computer and the printer is functioning properly.

3. Try to upload the paper profile update file again.

4. Make sure the version of the paper profile update file is compatible with the firmware version the printer is using. You can check this on the same Web page where you downloaded the paper profile update.

System Error: 75.21:YZ

Problem Description: The spittoons (Left Spittoon, Service Station) have reached 80% capacity.

Corrective action:

Use Preventive Maintenance Kit #2 to replace the Left Spittoon and Service Station.

System Error: 75.22:YZ

Problem Description: The spittoons (Left Spittoon, Service Station) are full.

Corrective action:

Use Preventive Maintenance Kit #2 to replace the Left Spittoon and Service Station.

System Error: 76:YZ

Problem Description: Hard disk drive is full.

Corrective action:

Remove any unnecessary files from the hard disk using the Embedded Web Server. If the problem persists, run the Hard Disk Recovery Utility (see Hard Disk Recovery Utility).

System Error: 78:08

Problem Description: The job received cannot be printed without borders on this paper.

Corrective action:

Use a paper that supports borderless printing. NOTE: This system error code does not require service help. It should be resolved by the customer.

System Error: 78.1:YZ

Problem Description: Media settings area missing in paper settings file

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Check that the printer has the latest firmware version. If not, update the firmware to the latest version.

System Error: 79:YZ

Problem Description: Generic firmware error

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Check that the printer has the latest firmware version. If not, update the firmware to the latest version. NOTE: If you see system error 79:04, see Appendix A: How to troubleshoot SE 79:04. NOTE: A firmware upgrade will not always solve the problem. The best way to solve this problem is to report the error to HP correctly. Make sure that you supply all the information accessed by pressing the Up and Cancel keys together while viewing the system error screen, or preferably provide the printer log and diagnostic package to HP. and

System Error: 81:01

Problem Description: Paper axis error - the copier will restart and run a diagnostic test

System Error: 81:YZ

Problem Description: Initial checks: This error can occur because the printer has been dropped during transportation, causing structural damage. Before continuing with the 81:YZ troubleshooting, first look for structural damage. To identify the structural damage, look for the following three things: ; Consistent 81:YZ error codes. ; Platen fingers rubbing on the roller surface, leaving black marks on the roller. ; A gap on the platen beam. If there’s any gap in Z (vertical direction) between the plastic feature of the platen and the metal side plate, then the chassis is damaged and the unit cannot be repaired. Problem Description: Problem with paper advance. This source of error could come from an error in any of the following systems: paper motor, disk encoder, cables or main electronics. Corrective action:

Corrective action: Try the following:

1. Open the Window and check for any visible obstacles restricting the movement of the Drive Roller. If there is a wrinkled mass of paper inside the paper path, lift the Pinchwheels (using the Media Lever) and clear the obstruction.

2. Perform the Media Drive diagnostic test to troubleshoot the problem further.

3. Perform the Rewinder diagnostic test to troubleshoot the problem further.

4. Check the connections on the Main PCA; the Media Advance Drive is connected to the connector labeled Paper Motor.

5. Adjust the encoder disc and motor mount configuration using the Media Advance Drive installation instructions.

6. Replace the Media Advance Drive.

System Error: 86:01

Problem Description: Scan axis error - the copier will restart and run a diagnostic test

System Error: 86:11

Problem Description: Scan Axis movement requires too much force or energy.

Corrective action: Try the following:

1. Check that the cutter disengages correctly.

2. Lubricate the scan axis.

3. Use Preventive Maintenance Kit.

System Error: 87:YZ

Problem Description: Problem with the Carriage Encoder Sensor readings

Corrective action: Try the following:

1. Check that the encoder sensor is correctly connected to the Carriage PCA.

2. Make sure the Encoder Strip is not broken or damaged. If necessary, replace it.

3. Make sure that the Encoder Strip is clean. If it is dirty, clean it, paying special attention to the area near the Service Station.

4. Clean the Encoder Sensor.

5. Replace the Encoder Sensor.

6. Replace the Carriage PCA.

7. Replace the Trailing Cables.

System Error: 87.01

Problem Description: Problem finding the Scan-axis encoder reading

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Make sure that the encoder strip is clean. If the encoder strip is dirty, clean it, paying special attention to the area near the Service Station.

3. Clean the encoder sensor.

4. Replace the Encoder Sensor.

System Error: 93:YZ

Problem Description: Unable to pressurize the Ink Delivery System

Corrective action: Try the following:

1. Switch the power off from the back of the printer and disconnect the power cord. Reconnect the power cord and power on the printer.

2. Perform the Ink Delivery System diagnostic test to further troubleshoot the problem.

3. Check that the cables between the Left Ink Supply Station and Main PCA are not damaged and are correctly connected.

4. Replace the Left Ink Supply Station, depending on the results of the diagnostic test.

5. Replace the Main PCA.