Action Yes No
Step 2
Check the lower interface cable. If damaged, then replace the lower
interface cable. See
“Staple, hole punch lower interface cable removal”
on page 861.
Remove the left cover. Reseat the cable J15 on the controller board, then
POR the machine.
Does the error remain?
Go to step 3. The problem is solved.
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
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 (left tamper motor HP) and sensor (right tamper
motor HP).
Does the same error occur?
Go to step 7. If a 453.75 or 453.76
error occurs, then
replace the sensor
(right tamper motor
HP). See
“Sensor (right
tamper motor HP)
removal” on page
740.
7463
Diagnostic information
197
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