Lexmark X734DE - Interlock Switch Removal

2-136 Service Manual
7526
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24 V interlock switch removal
Step Questions / actions Yes No
1 Is the 24 V switch damaged? Replace the 24 V interlock
switch. See “24 V
interlock switch removal”
on page 4-54.
Go to step 2.
2
Turn the printer off, and remove the rear
frame cover. See “Rear frame cover
removal” on page 4-40.
Check the cable in connector JCVR1 for
proper connection to the system board, for
pinch points, and for any other damage to the
cable or connector.
Is the cable damaged?
Replace the 24 V interlock
switch. See “24 V
interlock switch removal”
on page 4-54.
Go to step 3.
3
1. Disconnect the cable in connector JCVR1/
2. Connect the new 24 V interlock switch.
3. Bring the printer up in the Diagnostics
menu (turn off the printer, press and hold
3 and 6, turn on the printer.)
4. Activate the new 24 V interlock switch.
Does the display go from Close Front Door to
the Diagnostics menu?
Replace the 24 V interlock
switch. See “24 V
interlock switch removal”
on page 4-54.
Replace the system board.
See “System board
removal” on page 4-165.
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