Action Yes No
Step 4
Replace the sensor. See
“Sensor (3000-sheet tray feed) removal” on
page 512.
Does the problem remain?
Go to step 5. The problem is solved.
Step 5
a Reseat the cable on all of the sensors.
b Reseat the cable CN5 on the controller board.
c If necessary, reseat all the junction connectors on the cables.
d Make sure that the cables do not block the path of moving parts.
e Check the cables for damage, and replace if necessary.
Does the problem remain?
Go to step 6. The problem is solved.
Step 6
a Reseat the cable on all of the motors and on the top door switch.
b Reseat the cables CN3 and CN4 on the controller board.
c If necessary, reseat all the junction connectors on the cables.
d Make sure that the cables are not in the path of moving parts.
e Check the cables for damage, and replace if necessary.
Does the problem remain?
Contact the next level
of support.
The problem is solved.
28y paper jams
[x]‑page jam, press latch at area E to open ADF’s top cover. [28y.xx]
1 Remove all original documents from the ADF tray.
2 Open the ADF top cover.
3 Remove jammed paper.
Note: Make sure that all paper fragments are removed.
7421
Diagnostic information
107
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