Lexmark 4059-XXX manual Erase Lamp Service Check

4059-XXX

Erase Lamp Service Check

Error code 928 may be displayed when the printer detects that the erase lamp assembly, cable or engine board is defective.

Note: If the erase lamp assembly is defective, both the erase lamp and lens are replaced as a kit.

Make the following checks when a 928 service error displays.

	FRU	Action
1	Cable, Front Harness	Check the connection of the front
		harness to connector J10 on the
		engine board for correct installation.
		If incorrect, repair as necessary.
		Check the front harness to erase
		lamp assembly for correct
		installation. If incorrect, repair as
		necessary.
2	Engine Board	Remove the controller board and
		toner cartridge from the machine.
		Ground pin J10-15. The erase lamps
		turn on. The lamps can be observed
		through the front of the machine with
		the cover open and print cartridge
		removed. If the lamps do not turn on,
		measure the voltage on J10-14. The
		voltage reads approximately
		+24 V dc. If incorrect, replace the
		engine board. If correct, check the
		voltage at J10-15. The voltage reads
		between +15 V dc to +20 V dc. If
		incorrect, check the continuity of the
		erase lamp lines in the main
		harness. If incorrect, replace the
		cable harness. If correct, replace the
		erase lamp assembly.

Diagnostic Information 2-46