2-138 MFP Service Manual
7500-432, -632, and -832
2
Remove the large platen glass. Check the bottom of the large
platen glass in the vicinity the white reference strip for
contamination.
Is the vicinity of white reference strip contaminated?
Clean the bottom
of the large
platen glass in
the vicinity of the
white reference
strip.
Reinstall the
large platen
glass properly.
Go to step 3.
Go to step 4.
3
Perform a POR.
Does the error remain?
Go to step 4. Problem solved.
4
Check the exposure lamp for operation.
Perform the exposure lamp test.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Scanner Motor Tests.
4. Touch Exposure lamp.
Does the exposure lamp operate properly?
Go to step 8. Go to step 5.
5
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.
6
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.
7
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.
8
Perform a POR.
Does the error continue 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
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