Lexmark M52 Series Service Manual page 134

Action
Step 4
a
Enter the Diagnostics menu, and then navigate to:
Additional input tray diagnostics > Sensor tests
b
Find the sensor (Pass-through (tray 2)).
Does the sensor status change while toggling the sensor?
Step 5
a
Remove the tray 2 left cover. See
left cover removal" on page
b
Check the sensor cable on the optional tray controller board
for proper connection.
Is the cable properly connected?
Step 6
Reseat the cable.
Does the problem remain?
Step 7
Replace the sensor. See "Sensor (250‑ and 550-sheet tray
pass‑through) removal" on page
Does the problem remain?
Step 8
a
Remove the source tray left cover. See
tray left cover removal" on page
b
Make sure that the source tray controller board is properly
installed. Reseat all the cables on the controller board.
Does the problem remain?
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?
Step 10
Replace the source tray controller board. See
sheet tray controller board removal" on page
Does the problem remain?
"250‑ and 550-sheet tray
496.
507.
"250‑ and 550-sheet
496.
"250‑ and 550-
506.
Diagnostics and troubleshooting
134
Yes No
Go to step 9. Go to step 5.
Go to step 7. Go to step 6.
Go to step 7. The problem is
solved.
Go to step 8. The problem is
solved.
Go to step 9. The problem is
solved.
Contact the next Go to step 10.
level of support.
Contact the next The problem is
level of support. solved.
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