Sensor (input) jam service check
Action Yes No
Step 1
Check the LSU cables for proper connection.
Are they properly connected to the LSU and to the controller
board?
Go to step 2. Reseat the cables.
Step 2
Inspect the LSU cables and connectors.
Are they free of damage?
Go to step 3. Replace the LSU.
See
“Laser scanning
unit (LSU) removal”
on page 264.
Step 3
Check the input sensor cable for proper connection to the
controller board.
Is it properly connected?
Go to step 4. Reseat the cable.
Step 4
Check the input sensor.
Is it free of damage?
Go to step 5. Replace the input
sensor. See
“Duplex
sensor and input
sensor removal” on
page 242.
Step 5
Check the controller board for any damage.
Is it free of damage?
Go to step 6. Replace the
controller board. See
“Controller board
removal” on
page 210.
Step 6
Does the error remain?
Contact the next
level of support.
The problem is
solved.
Main drive motor control jam service check
Action Yes No
Step 1
a Remove the main drive gearbox.
b Check the main drive gearbox cable for proper connection.
Is it properly connected?
Go to step 2. Reseat the cable.
Step 2
a Remove the main drive gearbox.
b Check the gears of main drive gearbox for wear or damage.
Are they free of wear or damage?
Go to step 3. Replace the main
drive gearbox. See
“Main drive gearbox
removal” on
page 195.
4514-2xx
Diagnostics and troubleshooting
97
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