Action Yes No
Step 6
Replace the input option controller board. See
“550-sheet tray
controller board assembly removal” on page 382.
Does the problem remain?
Go to step 7. The problem is
solved.
Step 7
Reset the printer.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
Printhead service check
Action Yes No
Step 1
Reset the printer.
Does the problem remain?
Go to step 2. The problem is
solved.
Step 2
Check the cables on the printhead and on the JMIRR1 and JPH1
connectors on the controller board for proper connection.
Are the cables properly connected at both ends?
Go to step 4. Go to step 3.
Step 3
Reconnect the cables.
Does the problem remain?
Go to step 4. The problem is
solved.
Step 4
Check the printhead cable for damage, and replace if necessary.
Does the problem remain?
Go to step 5. The problem is
solved.
Step 5
Replace the printhead. See
“Printhead removal” on page 361.
Does the problem remain?
Go to step 6. The problem is
solved.
Step 6
Replace the controller board. See
“Controller board removal” on
page 357.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
5028
Diagnostic information
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