Lexmark X746de - ADF Scanning Sensor Service Check; Bubble Sensor Service Check

Diagnostic information 2-143
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ADF scanning sensor service check
Bubble sensor service check
Step Questions / actions Yes No
1 Remove the ADF motor side cover. See
“ADF motor side cover removal” on
page 4-212.
Are the connectors seated correctly?
Replace the ADF. See
“ADF removal (entire)”
on page 4-228.
Reseat connector.
Step Questions / actions Yes No
1 Is the bubble sensor flag (A) damaged? Replace the fuser. See
“Fuser assembly
removal” on page 4-104.
Go to step 2.
2
1. Remove the rear frame cover. See “Rear
frame cover removal” on page 4-37.
2. Check the fuser DC cable in connector
JFUSER1 for proper connection to the
system board, pinch points, and any other
damage to the cable or connector.
Is the cable damaged?
Replace the fuser DC
cable. See “Fuser DC
cable removal” on
page 4-107.
Note: Make sure to verify if
the new cable is working
properly first. Route the
cables properly only when
you have verified that the
cables are working
properly.
Go to step 3.