Lexmark C734 Service Manual page 83

Step Questions / actions
4 Remove the right cover. See
removal" on page
feeder/duplex motor cable for proper
connection to the MPF/duplex motor, pinch
points for the cable, and damage to the cable
or connector.
Is either cable damaged?
5 Check the MPF/duplex gear assembly for
damage.
Do the gears turn freely, and are they free of
damage?
6 Measure the resistance across fuse F5 (A) on
the system board.
A
Is the fuse blown?
"Right cover
4-37. Check the MP
1 JBIN1 1 1 JFUSER1 1 JHVPS1 1 JBLW1 1
1 1 1
JSB1 JFAN1 JBOR1 JMIRR1 JOPP1
1
JCVR1 JCVR1
F5
F6 JT1
JLVPS2
1
JCARTP1 F7
J49
1
JCARTS1
1
JBOOT1 1
JUSB1
JDIMM1 1
F9
J10
JCARTS2
1 JTLBT1
1 1
JCARTP2 JFMUSB1
1 JTWF1
1
F10
1 JDVR1 1 JTDBUG1
JTPS1
1
JOPT1 J5
JDX1
1 1 F13 1
1 JFDS1
F12
1 JINT1 F14
JFDPCK1 JTRAY1 JSEC1
JPH1
1 1 JT12
Yes
Replace the MPF/duplex
motor cable. See
"Multipurpose feeder
(MPF)/duplex motor
cable removal" on
page 4-107.
Go to step 6.
Replace the system board.
See "System board
removal" on page 4-139.
5026
No
Go to step 5.
Replace the MPF/duplex
gear assembly. See
"Multipurpose feeder
(MPF)/duplex gear and
housing removal" on
page 4-102.
Replace the MPF/duplex
motor. See "Multipurpose
feeder (MPF)/duplex
motor assembly
removal" on page 4-104.
2-49
Diagnostic information