Lexmark X734DE - POST Service Check

Diagnostic information 2-127
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920.26—POST service check
4
Replace the MPF/duplex motor assembly.
See “System board removal” on
page 4-165.
Does the error clear?
Problem resolved. Replace the system board.
See “System board
removal” on page 4-165.
Step Questions / actions Yes No
1 Open the top access cover.
Is the top cover sensor damaged?
Replace the top cover
sensor.
Go to step 2.
2
1. Turn the printer off.
2. Remove the rear frame cover. See “Rear
cover removal” on page 4-39.
3. Check the cable in the connector
JFDS1 (A) for proper connection to the
system board, pinch points, and the cable
or connector for any other damage.
Is the cable damaged?
Replace the top cover
sensor.
Go to step 3.
Step Questions / actions Yes No
1
JSB1
JBIN1
JFAN1
JFUSER1
JBOR1
JHVPS1
JMIRR1
JBLW1
JCVR1
JLVPS2
JCARTP1
JCARTS1
JCARTS2
JCARTP2
JDVR1
JTPS1
JOPT1
JFDS1
JINT1JINT1
JFDPCK1JTRAY1JSEC1
JDX1
JT12
J5
JDIMM1
JOPP1
JT1
JUSB1
JBOOT1
JFMUSB1
J49
JTWF1
JTDBUG1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
JTLBT1JTLBT1
JPH1
F5
F6
F7
F9
F10
F12
F13
F14
1
1
J10
1
1
A