Lexmark X748dte - Interlock Switch Removal

2-140 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 4-50.
Go to step 2.
2
1. Turn the printer off.
2. Remove the rear frame cover. See “Rear
frame cover removal” on page 4-37.
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?
Replace the 24 V interlock
switch. See “24 V
interlock switch removal”
on page 4-50.
Go to step 3.
3
1. Disconnect the cable in connector JCVR1/
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?
Replace the 24 V interlock
switch. See “24 V
interlock switch removal”
on page 4-50.
Replace the system board.
See “System board
removal” on page 4-165.