Action Yes No
Step 10
Remove the obstructions.
Does the problem remain?
Go to step 11. The problem is
solved.
Step 11
a Remove the duplex/MPF tray. See “Duplex/MPF tray removal”
on page 434.
b Enter the Diagnostics menu, and then navigate to:
Printer diagnostics and adjustments > Sensor tests
c Find the sensor (Tray 1 pass‑through).
Does the sensor status change while toggling the sensor?
Go to step 15. Go to step 12.
Step 12
a Remove the right cover. See “Right cover removal” on
page 420.
b Check the sensor cable J73 on the controller board for proper
connection.
Is the cable properly connected?
Go to step 14. Go to step 13.
Step 13
Reseat the cable.
Does the problem remain?
Go to step 14. The problem is
solved.
Step 14
Replace the sensor. See
“Sensor (tray 1 pass‑through) removal”
on page 468.
Does the problem remain?
Go to step 15. The problem is
solved.
Step 15
Perform a print test on each tray, and then check if the paper is
properly picked and transported out of the source tray by the paper
feeder.
Was the paper properly transported by the paper feeder?
Go to step 17. Go to step 16.
Step 16
Replace the aected paper feeder.
Does the problem remain?
Go to step 17. The problem is
solved.
Step 17
Perform a print test, and then check if the paper is properly
transported by the MPF motor drive to the sensor (tray 1
pass‑through).
Was the paper properly transported by the MPF motor drive?
Go to step 19. Go to step 18.
4064
Diagnostics and troubleshooting
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