Diagnostic information 2-35
4500–E220/E321/E323
Diagnostics (E220/E321/E323)
Note: For diagnostic information about models E320/E323 see
“Diagnostics (E320/E322) ” on page 2-1 for more
information.
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.
The lights on the operator panel indicate the status of the printer
anytime it is powered on. When the printer experiences a problem
requiring operator intervention, it indicates the source by blinking
one or more lights. See “Status information light patterns ” on
page 2-38 for more information. When all six lights blink
simultaneously, a service may need to be performed. See “Service
error codes ” on page 2-45 for more information.
If the printer does not indicate a service error code nor complete
POST without an error but there is a symptom, see “Symptom
tables ” on page 2-60 for more information.
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