Lexmark X734DE - Page 148

2-110 Service Manual
7526
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2
Check the cables in connectors JMIRR1 and
JPH1 for pinch points and any other damage
to the cables or connectors.
Is the cable damaged?
Replace the printhead. See
“Printhead removal,
installation, and
adjustment” on
page 4-147.
Go to step 3.
3
Measure the resistance across fuse F6 on the
system board.
Is the fuse blown?
Replace the system board.
See “System board
removal” on page 4-165.
Go to step 4.
4
Perform the printhead verification to check
whether the new printhead solves the
problem. See “Printhead verification” on
page 3-52.
Perform the Mirror Motor Test. See “Mirror
Motor Test” on page 3-22.
Did the mirror motor pass the test?
Replace the printhead. See
“Printhead removal,
installation, and
adjustment” on
page 4-147.
Replace the system board.
See “System board
removal” on page 4-165.
Step Questions / actions Yes No
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