Action Yes No
Step 6
a Remove the optional tray left cover. See “250‑ and 550-sheet
tray left cover removal” on page 496.
b Check the sensor cable on the optional tray controller board
for proper connection.
Is the cable properly connected?
Go to step 8. Go to step 7.
Step 7
Reseat the cable.
Does the problem remain?
Go to step 8. The problem is
solved.
Step 8
Replace the sensor. See
“Sensor (250‑ and 550-sheet tray
pass‑through) removal” on page 507.
Does the problem remain?
Go to step 9. The problem is
solved.
Step 9
Check the source tray pick roller for improper installation,
contamination, and damage.
Note: Make sure that the pick roller is fully pressed to its feeder
shaft. A click will be heard indicating a proper engagement
between the latches and the shaft.
Is the pick roller properly installed and free of contamination and
damage?
Go to step 11. Go to step 10.
Step 10
Reinstall, clean, or replace the pick roller. See
“Pick roller removal”
on page 503.
Does the problem remain?
Go to step 11. The problem is
solved.
Step 11
Remove the source tray insert, and then check if the following
components are functional and free of damage:
• Paper guides
• Lift plate
Note: Move the components or turn gears to check for proper
mechanisms.
Are the tray insert and its components functional and free of
damage?
Go to step 13. Go to step 12.
Step 12
Replace the tray insert.
Does the problem remain?
Go to step 13. The problem is
solved.
4064
Diagnostics and troubleshooting
140
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