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Troubleshooting
Use the error message tables, symptom table, and service checks,
in this chapter and the diagnostic aids in Chapter 3 to diagnose a
failure.
If the operator panel is blank, black, has diamonds across the dis-
play, or appears unusual, unplug the controller card and run
"Basic
Engine Test" on page
3-2. Go to Chapter 3 "Diagnostic Aids" to diag-
nose this problem because the operator panel or controller card may
have a defect.
If your machine makes it through POST without an error but you
have a symptom, go to the appropriate symptom table, locate your
symptom and take the appropriate action.
If an error is displayed, locate it in the following "Error Message
Tables" and take the appropriate action.
If an error message appears while you are working on the printer, go
to the error message table and take the indicated action.
Diagnostic Information 2-3
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