Action Yes No
Step 2
Enter the Diagnostics menu, and then navigate to:
Printer setup > Reset engine service error
Note: Perform this step every time a service error occurs.
Does the problem remain?
Go to step 3. The problem is solved.
Step 3
a Remove the top inner and rear covers.
b Test the motor (SHPF compiler feed roller release).
Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > Staple and Hole Punch Finisher Motor Tests >
Receiving roller release
c Check if the belts, gears, and rollers are properly rotating.
Are they properly rotating?
Go to step 5. Go to step 4.
Step 4
a Reseat the cable on the motor.
b Make sure that the motor is properly installed.
c Check the motor and cable for damage, and replace if necessary. See
“Motor (SHPF compiler feed roller release) removal” on page 388.
Does the problem remain?
Go to step 5. The problem is solved.
Step 5
a Make sure that the compiler feed roller release cam encoder is
properly installed.
b Make sure that the encoder is properly aligned with the sensor.
c Check the encoder for damage, and replace if necessary. See “SHPF
compiler feed roller release encoder removal” on page 390.
Does the problem remain?
Go to step 6. The problem is solved.
Step 6
a Make sure that the sensor (SHPF compiler feed roller release) is
properly installed.
b Make sure that the sensor is free of debris or dust.
c Reseat the cable on the sensor. Check the cable for damage, and
replace if necessary.
d Check the sensor for damage.
Is the sensor free of damage?
Go to step 7. Go to step 8.
4021, 7421
Diagnostic information
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