Lexmark C734 - XX-System Board Failure Service Check

Diagnostic information 2-117
5026
956.xx—System board failure service check
Step Questions / actions Yes No
1 Turn the printer off, and remove the rear
frame cover. See “Rear frame cover
removal” on page 4-33.
Check the cable in connector J49 for proper
connection to the system board.
Is the cable seated correctly?
Replace the system board.
See “System board
removal” on page 4-139.
Reseat the cable.
R1
JHVPS1
JMIRR1
JBLW1
J49
1
1
1
A