TROUBLESHOOTING GUIDE CHART (CONTINUED)

SYMPTOM

PROBABLE CAUSE

CORRECTIVE ACTION

Paper Jam indication on

A small piece of chad or torn

Separate the Professional

printer display, customer /

paper is blocking a sensor

Puncher-A1 from the Printer

operator has been unable

and/or the paper path

and the Finisher, clean out

to locate the jam

 

the entire paper path

Paper Jam, not able to find

Suspect a small piece of paper

Run a heavy cover stock

any large sheets, removed

is hidden somewhere in the

through the system by hand.

sheets are torn

paper path

This process may drive any

 

 

small torn pieces out of the

 

 

paper path

 

 

 

Punch does not cycle

Punch Clutch

Adjust or replace

 

Main Control Board

Adjust or replace

 

AC Punch Motor

Adjust or replace

 

 

 

Paper Jam and/or Punch

Punch Brake is not performing

Adjust or replace

shaft does not return to the

properly

 

“HOME” position

 

 

 

 

 

Paper Jam and/or Punch

Flag Sensor is broken or

Adjust or replace

continues to cycle

misaligned

 

 

 

 

Paper will not enter the

Divert Solenoid malfunction

Adjust or replace

punch area, runs through

 

 

bypass only

 

 

 

 

 

Paper is punched in the

Back stop (back gauge)

Adjust or replace

middle of the sheet

solenoid is malfunctioning

 

 

 

 

Punch paper path is not

Transport Motor not functioning

Adjust or replace

operable, system will only

 

 

bypass

Main Control Board not

Check connections, replace

 

functioning properly

 

 

Stepper Motor #1 or #2 is not

Adjust or replace

 

functioning correctly

 

 

Stepper Motor #1 or #2 Driver

Check connections, replace

 

Boards are not functioning

 

 

correctly

 

38

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Image 38
Canon DU7-1175-000 service manual