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.
Are the tamper assembly components functional and free of damage?
Go to step 5. Replace the tamper
assembly. See
“Tamper
assembly removal” on
page 747.
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 750.
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 motor HP). See
“Sensor (left tamper
motor HP) removal”
on page 742.
Step 7
a Reseat the cable J6 on the 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 749.
Step 8
Open the left cover, reseat all connectors on the controller board and then
POR the machine.
Does the error remain?
Replace the controller
board. See
“Stapler/
offset stacker
controller board
removal” on page
756.
If the error persists,
then replace the staple
finisher option. See
“Staple finisher/offset
stacker option
removal” on page
723.
The problem is solved.
7463
Diagnostic information
183
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