Lexmark X862de - White Reference;Exposure Lamp Illumination Failure

Diagnostic information 2-137
7500-432, -632, and -832
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844.01 White reference/exposure lamp illumination failure
2 Check the exposure lamp for connection.
Is the above component connected properly?
Replace the
exposure lamp.
Go to “Exposure
lamp removal”
on page 4-166.
Replace the
connection.
3 Check the exposure lamp PS card assembly.
Is the above card properly connected to the scanner
controller card assembly?
Replace the
exposure lamp
PS card
assembly.
Go to “Exposure
lamp PS card
assembly
removal” on
page 4-165.
Replace the
connection.
4 Check the scanner PS card assembly for connection.
Is the above card connected properly?
Replace the
scanner PS card
assembly.
Go to “Scanner
PS card
assembly
removal” on
page 4-162.
Replace the
connection.
5 Perform a POR.
Does the error remain when the power is turned off/on?
Replace the
scanner
controller card
assembly.
Go to “Scanner
controller card
assembly
removal” on
page 4-151.
Problem solved.
Step Check Yes No
1 Check the large platen glass.
Is the large platen glass installed properly?
Go to step 2. Remove and
clean the large
platen glass.
Go to “Large
platen glass
removal” on
page 4-150.
Reinstall the
large platen glass
properly.
Go to step 3.
Step Check Yes No