Action Yes No
Step 3
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 7. Go to step 4.
Step 4
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 6. Go to step 5.
Step 5
Reseat the cable.
Does the problem remain?
Go to step 6. The problem is
solved.
Step 6
Replace the sensor. See
“Sensor (tray 1 pass‑through) removal”
on page 468.
Does the problem remain?
Go to step 7. The problem is
solved.
Step 7
Perform a print test.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
Sensor (tray 1 pass‑through) late-arriving jam service check
Action Yes No
Step 1
Check the paper path and trays for paper fragments and partially
fed paper.
Is the paper path free of paper fragments and partially fed paper?
Go to step 3. Go to step 2.
Step 2
Remove the paper fragments and partially fed paper.
Does the problem remain?
Go to step 3. The problem is
solved.
4064
Diagnostics and troubleshooting
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