• Code: 56:10
• Description: Substrate Encoder calibration failed
• Causes: Substrate Encoder calibration has failed.
• Remedy: 1. Switch the power off at the rear of the printer, wait briefly, then switch it back on again. 2. Perform Substrate Drive diagnostics. 3. Replace the Encoder Disc and Sensor.

• Code: 58.1:10
• Description: Color Sensor Shutter Actuator failure
• Causes: Color Sensor Shutter Actuator failure.
• Remedy: 1. Replace the Color Sensor Shutter Actuator Assembly. 2. Perform the Color Sensor Shutter Diagnostic Test to ensure that there is no other problem preventing shutter operation. 3. Perform a Color Sensor basic test (CLC) to ensure that the replaced part is working correctly.

• Code: 58.2:10
• Description: Color Sensor Shutter Deactivator failure
• Causes: Color Sensor Shutter Deactivator failure.
• Remedy: 1. Check that the Shutter Deactivator is correctly screwed into place. 2. Perform the Color Sensor Shutter Diagnostic Test to ensure that there is no other problem preventing shutter operation. 3. Perform a Color Sensor basic test (CLC) to ensure that the replaced part is working correctly.

• Code: 58:01
• Description: Color Sensor shutter error
• Causes: Color Sensor shutter error.
• Remedy: Execute the Color Sensor Shutter Diagnostic Test.

• Code: 58:10
• Description: Color Sensor failure
• Causes: Color Sensor failure.
• Remedy: 1. Check that the Color Sensor is installed in the Carriage. 2. Check that the Color Sensor is correctly installed and screwed into place. 3. Check that the Color Sensor cable is not damaged. 4. Check that the Color Sensor cable is correctly connected to the Carriage PCA. 5. If the system error persists, replace the Color Sensor. 6. Perform a Color Sensor basic test (CLC) to ensure that the replaced part is working correctly.

• Code: 59.1:09
• Description: Two electrical parts have been replaced at the same time
• Causes: Two electrical parts have been replaced at the same time.
• Remedy: Replace one part at a time, and restart the printer before replacing another.

• Code: 59.2:00
• Description: An unsupported or reused part has been installed
• Causes: An unsupported or reused part has been installed.
• Remedy: Install only new parts recommended by HP for this printer.

• Code: 61:10
• Description: Data lost due to I/O timeout
• Causes: A slow computer processing complex files can pause for longer than the default printer timeout, which can be interpreted by the printer as an End Of Job, in which case some elements of the job may be lost.
• Remedy: 1. Increase the I/O timeout using the printer's front panel (see 'Communication failures between computer and printer' in the User’s guide). 2. Send the job from a faster computer.