Power Service Check - Lexmark 4200 Series Service Manual

4413-XXX

Power service check

FRU
1 Power Supply
2 Printhead Cables
Paper Feed Motor
Carrier Transport
Motor
Control Panel
3 System Board
2-14
Service Manual
Action
Plug the machine into an outlet. Check for
approximately 30 V dc at CN4 pin 2. If voltage is
incorrect, replace the power supply.
Unplug the printer. Disconnect 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 transport
motor, paper feed motor, and control panel.
If the symptom has not changed, replace the
system board. Go to the
removal" on page
"System board
4-19.