Lexmark 3000 Color Jetprinter, Руководство по обслуживанию

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Diagnostic Information 2-11
Power Service Check
FRU Action
1 Power Supply Disconnect CN9 from the system board and check
the following voltages on the power supply cable:
• CN9-1 to GND = +5 V dc
• CN9-3 to GND = + 24 V dc
If you do not have correct voltage, replace the
power supply. Be sure to unplug the machine
before you reconnect the power supply to the
system board.
2 Printhead Cable
Carrier Home
Sensor
Parallel Cable
Paper Feed Motor
Carrier Transport
Motor Unplug the printer. Disconnect one of the
printhead cables and plug in the printer. Look for a
symptom change. Check the failing part for shorts
and replace as necessary.
Repeat this procedure for the carrier home sensor,
parallel cable, carrier transport motor and paper
feed motor.
3 System Board If the symptom has not changed, replace the
system board.