Lexmark C734dn Service Manual

2-64 Service Manual
5026
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5
Remove the rear frame cover. See “Rear
frame cover removal” on page 4-33.
Check the fuser DC cable in the connector
JFUSER1 for proper connection to the system
board, for pinch points, and for any other
damage to the cable or the connector.
Is the cable damaged?
Replace the fuser DC
cable. See “Fuser DC
cable removal” on
page 4-106.
Go to step 6.
6
1. POR the printer.
2. Place a voltmeter between pin 8 and pin 6
(ground) on the JFUSER1 connector on
the system board.
3. Does the meter read +5 V dc?
Go to step 7. Replace the system board.
See “System board
removal” on page 4-153.
7
Place a voltmeter between the fuser
autoconnect pin 8 and ground (6).
Does the meter read +5 V dc?
Go to step 8. Replace the fuser DC
cable. See “Fuser DC
cable removal” on
page 4-106.
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
Pin 6
(ground)
Pin 8

Lexmark C734dn Specifications

General

Brand	Lexmark
Model	C734dn
Category	Printer
Language	English