Actions Yes No
Step 1
Turn the printer off.
Remove the rear cover. See
“Rear cover removal” on page 290.
Remove the operator panel. See
“Operator panel removal (for CS310
models only)” on page 254.
Is the operator panel assembly cable properly installed at JOP1 on the
controller board and the operator panel assembly?
Go to step 2. Reinstall the cable.
Step 2
Replace the operator panel assembly. See
“Operator panel removal (for
CS310 models only)” on page 254.
Is the operator panel still blank?
Replace the controller
board. See
“Controller
board removal” on
page 291.
Problem resolved.
For CS410 models:
5027
Diagnostic information
132
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