Diagnostic information 2-79
4500
Operator panel service check
Inspect the operator panel cable for damage. Make sure the cable is
plugged in securely.
Run POST and check each light for proper operation.
Warning: Do not replace the operator panel and controller card at
the same time. Each card contains the printer settings.
When either of these cards is new, it obtains the settings
from the other card. Settings are lost when both are new
at the same time.
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