Bubble Sensor Service Check - Lexmark C734 Service Manual

5026

Bubble sensor service check

Step Questions / actions
1 Is the bubble sensor flag damaged?
2 Remove the rear frame cover. See
frame cover removal" on page
Check the fuser DC cable in connector
JFUSER1 (A) for proper connection to the
system board, pinch points, and any other
damage to the cable or connector.
Is the cable damaged?
3 Place a voltmeter between the fuser DC
autoconnect, pin 3 and ground (pin 6).
Does the voltage meter read +5 V dc?
2-120
Service Manual
"Rear
4-33.
A
1 JBIN1 1 1 JFUSER1 1 JHVPS1 1 JBLW1 1
JSB1 1 1 1 JOPP1
JFAN1 JBOR1 JMIRR1
1
JCVR1
F5
F6
JLVPS2
1
JCARTP1 F7
1 J49
JCARTS1
1
JBOOT1
JDIMM1
F9
JCARTS2
1
JTLBT1
JCARTP2 1 1
JFMUSB1
1 1 JTWF1
F10
JTDBUG1
1 JDVR1 1
JTPS1
1
J5
JOPT1
1 JDX1
1 F13 1
1
JFDS1 F12
JINT1 F14
1
JFDPCK1 JTRAY1 JSEC1
JPH1
1
1 JT12
Yes
Replace the fuser. See
"Fuser removal" on
page 4-90.
Replace the fuser DC
cable. See "Fuser DC
cable removal" on
page 4-92.
JT1
1
JUSB1
1
J10
Go to step 5.
No
Go to step 2.
Go to step 3.
Go to step 4.