4511-xxx
Diagnostic information
2-1
2. Diagnostic information
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CAUTION: Unplug power from the printer before connecting or
disconnecting any cable, assembly, or electronic card. This is a
precaution for personal safety and to prevent damage to the
printer.
This chapter contains the codes and diagnostic tools to aid in providing
corrective action for a malfunctioning printer. To determine the corrective
action to repair a printer, look for the following information:
• A description of a problem, see “Symptom tables” on page 2-79.
• Information from the operator panel of the printer.
– Models E238, E240, and E240n have an operator panel containing
lights and buttons. For diagnostic information specific to these
modes, see “Diagnostics—E238, E240, and E240n” on
page 2-2.
– Models E340 and E342n have an operator panel with messages.
For diagnostic information specific to these models, see
“Diagnostics—E340 and E342n” on page 2-50.
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