MX-GBX1. Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 41

 

41 

 

SYMPTOM 

PROBABLE CAUSE 

CORRECTIVE ACTION 

Punch does not cycle 
 
 
 
 
 

Punch Clutch 
 
Main Control Board 
 
AC Punch Motor 

Adjust or replace 
 
Adjust or replace  
 
Adjust or replace 

Paper Jam and/or Punch shaft 
does not return to the “HOME” 
position 
 

Punch Brake is not performing 
properly 

Adjust or replace 

Paper Jam and/or Punch 
continues to cycle 

Flag Sensor is broken or misaligned 
 

Adjust or replace 

Paper will not enter the punch 
area, runs through bypass only 
 

Divert Solenoid malfunction 

Adjust or replace 

Paper is punched in the middle 
of the sheet 
 

Back stop (back gauge) solenoid is 
malfunctioning 

Adjust or replace 

Punch paper path is not 
operable, system will only 
bypass 
 

Transport Motor not functioning 
 
Main Control Board not functioning 
properly 
 
Stepper Motor #1 or #2 is not 
functioning correctly 
 
Stepper Motor #1 or #2 Driver Boards 
are not functioning correctly 
 

Adjust or replace 
 
Check connections, replace 
 
 
Adjust or replace 
 
 
Check connections, replace 
 
 
 

Punched holes are not centered 
 

Die Set positioning bracket is out of 
adjustment 

Inspect and adjust as required, see 
adjustment procedure 
 

Punched holes are not parallel to 
the edge of the paper 
 

Back Stop (Back Gauge) is not 
functioning properly 

Inspect and adjust as required, see 
adjustment procedure