Action Yes No
Step 4
a Enter the Diagnostics menu, and then navigate to:
Additional input tray diagnostics > Sensor tests
b Find the sensor (Pass-through (tray 3)).
Does the sensor status change while toggling the sensor?
Go to step 8. Go to step 5.
Step 5
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 7. Go to step 6.
Step 6
Reseat the cable.
Does the problem remain?
Go to step 7. The problem is
solved.
Step 7
Replace the sensor. See
“Sensor (250‑ and 550-sheet tray
pass‑through) removal” on page 507.
Does the problem remain?
Go to step 8. The problem is
solved.
Step 8
a Remove the source tray left cover. See “250‑ and 550-sheet
tray left cover removal” on page 496.
b Make sure that the source tray controller board is properly
installed. Reseat all the cables on the controller board.
Does the problem remain?
Go to step 9. The problem is
solved.
Step 9
Check the source tray controller board and its connector pins for
damage.
Are the tray controller board and its connectors free of damage?
Contact the next
level of support.
Go to step 10.
Step 10
Replace the source tray controller board. See
“250‑ and 550-
sheet tray controller board removal” on page 506.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
4064
Diagnostics and troubleshooting
157
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