Action Yes No
Step 3
Check the auto connector end of the machine below the finisher.
Is it free of damage?
Go to step 4. Replace the upper
interface cable of the
machine under the
finisher.
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
PCBA.
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
767.
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 771.
Step 6
a Reseat the cable J11 on the controller PCBA. 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 765.
Step 7
a Reseat the cable J6 on the stapler controller PCBA, 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 770.
4063
Diagnostic information
185