Xx-System Board Failure Service Check; Interlock Switch Service Check - Lexmark X734de Service Manual

7526
956.xx—System board failure service check
Step Questions / actions
Turn the printer off, and remove the rear
1
frame cover. See
removal" on page
Check the cable in connector J49 (A) for
proper connection to the system board.
Is the cable seated correctly?
5 V interlock switch service check
Step Questions / actions
Is the +5 V switch (B) damaged?
1
Service Manual
2-134
"Rear frame cover
4-40.
A
Yes
Replace the system board.
See
"System board
removal" on page 4-165.
Yes
Replace the 5 V interlock
switch. See
"5 V interlock
switch cable removal" on
page 4-52.
No
Reseat the cable.
No
Go to step 2.
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