Lexmark 4059-XXX manual

4059-XXX

	FRU	Action
5	Engine Board HVPS	Check the following voltages at J10
	Connector	on the engine board. Measure the
		voltages from J10 to printer ground.
		Printer Idle
		J10-1 approximately 0 V dc
		J10-2 approximately 4 V dc
		J10-4 approximately 0 V dc
		Printer Printing
		J10-1 varies 0 V dc to +5 V dc
		J10-2 varies 0 V dc to +4 V dc
		J10-4 varies 0 V dc to +1.9 V dc
		If J10-1 voltage is incorrect, check
		the continuity of the front harness
		cable (J10-1 line). If there is no
		continuity, replace the harness
		cable. If there is continuity, replace
		the HVPS. If this does not correct the
		problem, replace the engine board.
		If J10-2 voltage is incorrect or if the
		voltage remains at 0 V dc, check the
		continuity of the front harness cable
		(J10-2 line). If there is no continuity,
		replace the harness cable. If there is
		continuity, replace the HVPS. If this
		does not correct the problem,
		replace the engine board.
		If J10-4 voltage is incorrect, check
		the front harness cable (J10-3 line).
		If there is not continuity, replace the
		harness cable. If correct, replace the
		engine board. if this does not correct
		the problem, replace the HVPS.

Diagnostic Information 2-98