2-138 Service Manual
7526
ADF exit sensor service check
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 4-157.
Step Questions / actions Yes No
1 Make sure the mirror is clean:
1. Turn the printer off.
2. Open the ADF front cover.
3. Lift the flap as shown.
Is the mirror clean?
Go to step 2. Slightly dampen a soft, lint-
free cloth with water, and
clean the mirror.
Step Questions / actions Yes No