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4402-001
Power Service Check
FRU
1
External Power
Supply
2
Printhead Cable
Paper Feed Motor
Carrier Transport
Motor
Operator Panel
3
System Board
2-14
Service Manual
Action
Plug the external power supply into an outlet.
Check for + 30 V dc. If voltage is incorrect, replace
the power supply.
Unplug the printer. Disconnect the printhead cable
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 transport
motor, paper feed motor, and operator panel.
If the symptom has not changed, replace the
system board. Go to the
Removal" on page
"System Board
4-12.
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