Action Yes No
Step 4
a Make sure the following components are properly installed:
• sensor (right tamper motor HP)
• sensor (left tamper motor HP)
• tamper motor (right)
• tamper motor (left)
b Check the tamper assembly components:
• Check if the tampers can be adjusted. Move the right and left
tampers to the middle, and then back to its original position.
• Check the tamper assembly mechanism and home position sensor
flags for damage.
c Reseat the tamper assembly connectors on the stapler controller
board.
Are the tamper assembly components functional and free of damage?
Go to step 5. Replace the tamper
assembly. See
“Stapler
tamper assembly
removal” on page
869.
Step 5
Check the tamper drive belt.
Is it free of damage?
Go to step 6. Replace the tamper
drive belt. See
“Tamper
drive belt removal” on
page 873.
Step 6
a Reseat the cable J11 on the controller board. Reseat the same cable
on the sensor (right tamper motor HP) and sensor (left tamper motor
HP) end.
b Swap the sensor (right tamper motor HP) and sensor (left tamper
motor HP).
Does the same error occur?
Go to step 7. If a 452.73 or 452.74
error occurs, then
replace the sensor (left
tamper HP). See
“Sensor (left tamper
motor HP) removal”
on page 867.
Step 7
a Reseat the cable J6 on the stapler controller board, then reseat the
same cable on the tamper motor end.
b Swap the left and right tamper motors and take note of the error code.
Does the same error occur?
Go to step 8. If a 452.73 or 452.74
error occurs, then
replace the left tamper
motor. See
“Tamper
motor (left) removal”
on page 872.
Step 8
Reseat all connectors on the stapler controller board and then POR the
machine.
Does the error remain?
Replace the stapler
controller board. See
“Stapler controller
board removal” on
page 851.
If the error persists,
then replace the
finisher. See
“Staple,
hole punch finisher
option removal” on
page 840.
The problem is solved.
7463
Diagnostic information
199
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