- HP Printer User Manual

Troubleshooting Analysis Guide (TAGs) 3-125
TAG 610: Operator Panel Malfunction
Error Code: 610
Symptoms: One or more message indicators will not light
Incomplete numbers are displayed
Tone does not work properly
All status lights remain on
One or more function keys do not work
Possible Causes: Operator panel
Connectors or wiring
PCL board
1 Turn the printer off and unplug the power cord.
• Turn the volume control (on operator panel inside front cover) up fully.
• Verify that J/P90, J/P42, J/P8, J/P41, and J/P94 are connected properly.
• Run diagnostic test 001.
Has the problem been resolved?
No: Continue.
Yes: Loose connectors were at fault. Turn to TAG 002: Check & Problem Resolution.
2 Do the status lights stay on continuously?
No: Continue.
Yes: Replace the PCL board, then turn to TAG 002: Check & Problem Resolution.
3 Turn the printer off and unplug the power cord.
• Disconnect J/P42, J/P91, J/P8, and J/P32.
• Check P8-15 to P42-20 for continuity.
Is there continuity?
No: Repair or replace the connectors or wiring from P8-15 to J/P94-2 to J/P90-20 to P42-20,
then turn to TAG 002: Check & Problem Resolution.
Yes: Continue.
4 Reconnect J/P42, J/P91, J/P8, and J/P32.
• Power-on-reset the printer.
• Press each function key and listen for the tone.
• Test prints may be produced. Press the STOP key or turn the printer off to quit.
Did you hear the tone after pressing each function key?
No: Go to #14 in this TAG.
Yes: Continue.
5 Is one of the function keys not working properly?
No: Go to #16 in this TAG.
Yes: Continue.