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HP DesignJet T770

Error Codes List page 13

  • Code: 78.1:YZ
  • Description: Media settings area missing in paper settings file
  • Remedy: 1. Switch the power off from the back of the product and disconnect the power cord. Reconnect the power cord and power on the product. 2. Check that the product has the latest firmware version. If not, update the firmware to the latest version.
  • Code: 78:08
  • Description: The job received cannot be printed without borders on this paper.
  • Remedy: Use a paper that supports borderless printing. NOTE: This system error code does not require service help. It should be resolved by the customer.
  • Code: 79:YZ
  • Description: Generic firmware error
  • Remedy: 1. Switch the power off from the back of the product and disconnect the power cord. Reconnect the power cord and power on the product. 2. Check that the product 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 product log and diagnostic package to HP.
  • Code: 81:01
  • Description: Paper axis error—the copier will restart and run a diagnostic test
  • Remedy: None
  • Code: 81:YZ
  • 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.
  • Remedy: This error can occur because the product 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fs 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.
    1. 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. See Paper Drive Test. 3. Perform the Rewinder diagnostic test to troubleshoot the problem further. See Rewinder Test. 4. Check the connections on the Engine 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. See Media Advance Drive. 6. Replace the Media Advance Drive.
  • Code: 86:01
  • Description: Scan axis error—the copier will restart and run a diagnostic test
  • Remedy: None
Error Code
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