Interlock Switch Removal - Lexmark X746de Service Manual

Step Questions / actions
1. Disconnect the cable in connector JINT1.
3
2. Connect the new 5 V interlock switch to
JINT1.
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 5 V interlock switch.
5. Does the display go from Close front door
to the Diagnostics Menu?
24 V interlock switch removal
Step Questions / actions
Is the 24 V switch damaged?
1
1. Turn the printer off.
2
2. Remove the rear frame cover. See
frame cover removal" on page
3. 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?
Yes
Replace the 5 V interlock
switch. See
"5 V interlock
switch cable removal" on
page 4-48.
Yes
Replace the 24 V interlock
switch. See
"24 V

interlock switch removal"

on page 4-50.
Replace the 24 V interlock
switch. See
"24 V
"Rear
interlock switch removal"
4-37.
on page 4-50.
7526
No
Replace the system board.
See
"System board
removal" on page 4-157.
No
Go to step 2.
Go to step 3.
Diagnostic information
2-137
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