Lexmark C734 - Page 83

Diagnostic information 2-49
5026
4
Remove the right cover. See “Right cover
removal” on page 4-37. Check the MP
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?
Replace the MPF/duplex
motor cable. See
“Multipurpose feeder
(MPF)/duplex motor
cable removal” on
page 4-107.
Go to step 5.
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 4-102.
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 4-139.
Replace the MPF/duplex
motor. See “Multipurpose
feeder (MPF)/duplex
motor assembly
removal” on page 4-104.
Step Questions / actions Yes No
1
JSB1
JBIN1
JFAN1
JFUSER1
JBOR1
JHVPS1
JMIRR1
JBLW1
JCVR1JCVR1
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