Error Messages, Codes, and Procedures 3-173
Punch Failure (Punch Home Sensor) Troubleshooting Procedure
Step Actions and Questions Yes No
1
Check the Punch operation.
Does the punch move smoothly?
Go to Step 2. Correct the
installation.
2
Test the Punch Home Sensor.
Run the Service Diagnostics Punch Home
Sensor test.
Does the sensor change state when the
sensor is blocked?
Go to Step 9. Go to Step 3.
3
Check Punch Home Sensor harness
connections.
Are P/J8348 and P/J8333 on the Punch
Harness, and P/J8333 and P/J8307 on
the Punch Sensor Harness connected?
Go to Step 5. Connect and go
to Step 4.
4
Print a Test Print.
Does the error still occur?
Go to Step 5. Problem solved.
5
Check Punch Home Sensor Harness
continuity.
1. Disconnect P/J8348 and P/J8333.
2. Check for continuity at the following:
P/J8348-3 <=> P/J8333-7
P/J8348-2 <=> P/J8333-8
P/J8348-1 <=> P/J8333-9
Are these conductive?
Go to Step 6. Repair the Punch
Home Sensor
Harness.
6
Check Punch Home Sensor Harness
continuity.
1. Disconnect P/J8333 and P/J8307.
2. Check for continuity at the following:
P/J8333-7 <=> P/J8307-B6
P/J8333-8 <=> P/J8307-B5
P/J8333-9 <=> P/J8307-B4
Are these conductive?
Go to Step 7. Repair the Punch
Home Sensor
Harness.
7
Check for +5 V to the Punch Home Sensor.
Is there +5 V across J8307-B6 <=>
J8307-B5 on the Finisher Main PWB?
Go to Step 8. Replace the
Finisher Main
PWB
(
page 3-248).
8
Check the Punch Home Sensor signal.
Does the voltage across P8307-B4 <=>
P8307-B5 on the Finisher Main PWB
change when the sensor is blocked?
Replace the
Finisher Main
PWB
(
page 3-248).
Replace the
Punch Home
Sensor
(
page 3-151).
9
Test the Punch Motor.
Run the Service Diagnostics Punch Unit
Motor Front and Rear tests.
Does the Punch Motor rotate?
Replace the
Finisher Main
PWB
(
page 3-248).
Go to Step 10.
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