White Reference/Exposure Lamp Illumination Error - Lexmark X940e Service Manual

7510-XXX

844.01 White reference/exposure lamp illumination error

Step
1 Check the large platen glass.
Is the large platen glass installed properly?
2 Remove the large platen glass. Go to
removal" on page
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?
3 Perform a POR.
Does the error remain?
4 Check the exposure lamp for operation.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Scanner Motor Tests.
4. Touch Exposure lamp.
Does the exposure lamp operate properly?
5 Check the exposure lamp for connection.
Is the above component properly connected?
6 Check the exposure lamp PS card assembly.
Is the above card properly connected to the scanner
controller card assembly?
2-120
MFP Service Manual
Check
"Large platen glass
4-114.
Caution: When performing motor tests, ensure
that all cover and door interlock switches are
overridden.
Yes
Go to step 2. Remove and
clean the large
platen glass.
Go to "Large
platen glass
removal" on
page 4-114.
Reinstall the
large platen glass
properly.
Go to step 3.
Clean the bottom Go to step 4.
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. Problem solved.
Go to step 8. Go to step 5.
Replace the Replace the
exposure lamp. connection.
Go to
"Exposure lamp
removal" on
page 4-119.
Replace the Replace the
exposure lamp connection.
PS card
assembly.
"Exposure lamp
PS card
assembly
removal" on
page 4-119.
No