Lexmark X734DE - POST Error Service Check

2-126 Service Manual
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920.23—POST error service check
Step Questions / actions Yes No
1 Turn the printer off, and then remove the rear
frame cover. See “Rear frame cover
removal” on page 4-40.
Reseat the cable in connector JDX1.
Does the error clear?
Problem resolved. Go to step 2.
2
Remove the right cover. See “Right cover
removal” on page 4-41. Check the MPF/
duplex motor cable in connector JDX1 for
pinch points and any other damage to the
cable or connector. Check both ends of the
cable.
Is the cable damaged?
Replace the MPF/duplex
motor cable. See
“Multipurpose feeder
(MPF)/duplex motor
cable removal” on
page 4-134.
Go to step 3.
3
Measure the resistance across fuse F13 on
the system board.
Is the fuse blown?
Replace the system board.
See “System board
removal” on page 4-165.
Go to step 4.
1
JSB1
JBIN1
JFAN1
JFUSER1
JBOR1
JHVPS1
JMIRR1
JBLW1
JCVR1
JLVPS2
JCARTP1
JCARTS1
JCARTS2
JCARTP2
JDVR1
JTPS1
JOPT1
JFDS1
JINT1
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
JTLBT1
JPH1
F5
F6
F7
F9
F10
F12
F13
F14
1
1
J10
1
1
A
1
JSB1
JBIN1
JFAN1
JFUSER1JFUSER1
JBOR1
JHVPS1
JMIRR1
JBLW1
JCVR1JCVR1
JLVPS2
JCARTP1
JCARTS1
JCARTS2
JCARTP2
JDVR1
JTPS1
JOPT1
JFDS1
JINT1
JFDPCK1JFDPCK1JTRAY1JSEC1
JDX1
JT12
J5
JDIMM1
JOPP1
JT1
JUSB1
JBOOT1
JFMUSB1JFMUSB1
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
JTLBT1
JPH1
F5
F6
F7
F9
F10
F12
F13
F14
1
1
J10
1
1
A