Interlock Switch Removal - Lexmark X746de Service Manual

7526
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?
1. Disconnect the cable in connector JCVR1/
3
2. Connect the new 24 V interlock switch.
3. Enter Diagnostics mode (press and hold
buttons 3 and 6, turn on the MFP, and
release the buttons when the progress bar
displays.
4. Activate the new 24 V interlock switch.
Does the display go from Close Front Door to
the Diagnostics menu?
Service Manual
2-140
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.
Replace the 24 V interlock
switch. See
"24 V
interlock switch removal"
on page 4-50.
No
Go to step 2.
Go to step 3.
Replace the system board.
See
"System board
removal" on page 4-165.
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