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Error code 928 service erase lamps - Lexmark Optra T612 Laser Printer

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Erase Lamp Service Check (010/212/414/616)
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. Models 41b/41e/41l and any model at service level B do not have erase lamps installed. Go to "Printer Serial Label" on page 7-2 to identify the printer service level. Make the following checks when a 928 service error displays.

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.

Posted on Oct 19, 2010


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