Lexmark 1000, 1100 manual Power Service Check

4096-00X

Power Service Check

	FRU	Action
1	Power Supply	Disconnect N1 from the system board and check
		the following voltages on the power supply cable:
		• N1-1 to GND = +5 V dc
		• N1-3 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	Turn off the printer. Disconnect one of the
	Carrier Home	printhead cables and turn on the printer. Look for a
	Sensor	symptom change. Check the failing part for shorts
	Parallel Cable	and replace as necessary.
		Repeat this procedure for the carrier home sensor
		and parallel cable.
3	System Board	If the symptom has not changed, replace the
		system board.

Diagnostic Information 2-11