Unresponsive control panel or display service check
Warning—Potential Damage: Observe all necessary ESD precautions when removing and handling the
controller board or any installed optional cards or assemblies.
Note: Before performing the check, make sure that the printer is not in Sleep Mode..
Action Yes No
Step 1
Wake the printer from Sleep Mode.
Does the problem remain?
Go to step 2. The problem is
solved.
Step 2
If the control has a LED indicator, check the LED indicator.
Is the LED indicator blinking red or blue?
Go to step 3. Go to
“LVPS service
check” on page 135
Step 3
Turn o the printer. Check the control panel cable for proper
connection to the controller board.
Is the control panel cable properly connected?
Go to step 5. Go to step 4.
Step 4
Reseat the cable.
Does the problem remain?
Go to step 5. The problem is
solved.
Step 5
Remove the control panel without removing the cable. Check the
cable for improper connection to the control panel.
Is the cable properly connected?
Go to step 7. Go to step 6.
Step 6
Reseat the cable.
Does the problem remain?
Go to step 7. The problem is
solved.
Step 7
Check the control panel cable for damage.
Is the control panel cable free of damage?
Go to step 9. Go to step 8.
Step 8
Replace the cable.
Does the problem remain?
Go to step 9. The problem is
solved.
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Diagnostics and troubleshooting
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