5016-001

Erase Lamp Service Check

Note: The erase lamp assembly is mounted on the top of the printhead assembly.

 

FRU

Action

 

 

 

1

Printhead Erase

Check the cable to be sure it is installed properly

 

Lamp

from CN14 on the engine cable to CN750 on the

 

Engine Board

erase lamp assembly.

 

If the cable is installed correctly, check the voltage

 

 

 

Erase Lamp

on the engine board at CN14 pin 21. It should

 

Cable

measure +24 V dc.

 

 

If incorrect, replace the engine board.

 

 

If correct, check the voltage at CN14-22 while

 

 

 

running a print test. The voltage should change

 

 

 

from approximately +5 V dc to 0 V dc when the

 

 

 

erase lamps turn on and off.

 

 

 

• If incorrect, replace the engine board.

 

 

 

• If correct, check the cable from CN14 erase

 

 

 

lamp assembly on the engine board to CN750

 

 

 

on the erase lamp assembly.

 

 

 

• If incorrect, replace the cable.

 

 

 

• If correct, replace the erase lamp assembly.

 

 

 

 

2-50Service Manual

Page 116
Image 116
Lexmark 5016-001 manual Erase Lamp Service Check