Lexmark X734de Service Manual page 82

7526
Step Questions / actions
Remove the rear frame cover. See
4
frame cover removal" on page
the cable in connector JFUSER1 (fuser DC
cable) for proper connection to the system
board, the cable for pinch points, and the
cable or connector for any other damage.
Is the cable damaged?
Check the cable in connector JLVPS2 for
5
proper connection to the system board, the
cable for pinch points, and the cable or
connector for any other damage.
Is the cable damaged?
Measure the resistance across fuse F6 on the
6
system board.
Is the fuse blown?
Service Manual
2-44
"Rear
4-40. Check
A
1 JBIN1 1 1 JFUSER1 1 JHVPS1 1 JBLW1 1
1 1
JSB1 1 JFAN1 JBOR1 JMIRR1 JOPP1
1
JCVR1
F5
F6 JT1
JLVPS2
1
JCARTP1 F7
1 J49
JCARTS1
1
1
JBOOT1
JUSB1
JDIMM1 1
F9
J10
JCARTS2
1 JTLBT1
1 1
JCARTP2 JFMUSB1
1 JTWF1
1
F10
JDVR1 JTDBUG1
1 1
JTPS1
1
JOPT1 J5
JDX1
1 1 F13 1
1 JFDS1
F12
1 JINT1 F14
JFDPCK1 JTRAY1 JSEC1
JPH1
1 1 JT12
A
1 JBIN1 1 1 JFUSER1 1 JHVPS1 1 JBLW1 1
1
JSB1 1 JFAN1 JBOR1 JMIRR1 1 JOPP1
1
JCVR1
F5
F6 JT1
JLVPS2
1
JCARTP1 F7
1 J49
JCARTS1
1
JBOOT1 1
JUSB1
1
JDIMM1
F9 J10
JCARTS2
1
JTLBT1
1
JCARTP2 1
1 JTWF1 JFMUSB1
1
F10
JTDBUG1
1 JDVR1 1
JTPS1
1
JOPT1 J5
1 JDX1 1
1 F13
1 JFDS1
F12
1 JINT1 F14
JFDPCK1 JTRAY1 JSEC1
JPH1
1
1 JT12
Yes
Replace the fuser DC
cable. See
"Fuser DC
cable removal" on
page 4-117.
Replace the LVPS. See
"Low-voltage power
supply (LVPS) removal"
on page 4-124.
Replace the system board.
See
"System board
removal" on page 4-165.
No
Go to step 6.
Go to step 7.
Go to step 8.
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