Lexmark C734dn Service Manual

2-50 Service Manual
5026
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147.xx, 920.01—POST (power-on self test) aligner error service check
5
Check the MPF/duplex gear assembly for
damage.
Do the gears turn freely, and are they free of
damage?
Go to step 6. Replace the MPF/duplex
gear assembly. See
“Multipurpose feeder
(MPF)/duplex gear and
housing removal” on
page 4-116.
6
Measure the resistance across fuse F5 (A) on
the system board.
Is the fuse blown?
Replace the system board.
See “System board
removal” on page 4-153.
Replace the MPF/duplex
motor. See “Multipurpose
feeder (MPF)/duplex
motor assembly
removal” on page 4-118.
Step Questions / actions Yes No
1 1. Turn the printer off.
2. Remove the rear frame cover. See “Rear
frame cover removal” on page 4-33.
3. Check the cable in connector JFPCK1 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?
Replace the paper pick
mechanism. See “Paper
pick mechanism
assembly removal” on
page 4-127.
Go to step 2.
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
1
JSB1
JBIN1
JFAN1
JFUSER1
JBOR1
JHVPS1
JMIRR1JMIRR1
JBLW1
JCVR1
JLVPS2
JCARTP1
JCARTS1
JCARTS2
JCARTP2
JDVR1
JTPS1
JOPT1
JFDS1
JINT1
JFDPCK1JTRAY1JSEC1
JDX1
JT12
J5
JDIMM1JDIMM1
JOPP1
JT1
JUSB1
JBOOT1
JFMUSB1
J49J49
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

Lexmark C734dn Specifications

General

Brand	Lexmark
Model	C734dn
Category	Printer
Language	English