Service manual

SC TABLE
G130/G131 4-32 SM
SC No. Item Definition Possible Cause
Related
SCs
Troubleshooting Procedure Type
SC 746 Booklet finisher
stapler/folder
motor error
• The stapler/folder motor
starts. However, the
controller does not receive
the signal from the encoder
sensor within 0.1 second.
• The stapler/folder motor
starts to drive the stapler
unit, and the stapler switch
is on. However, the
controller does not receive
the signal from the home
position sensor for 0.5
second.
• The stapler starts to staple
the paper. However, the
controller does not receive
any signal from the home
position sensor, and the
stapler switch is off.
• The stapler/folder motor
starts to drive the folder
rollers. However, the home
position sensor does not
turn off within 9.247
seconds.
• The home position sensor
does not turn on within
9.247 seconds after this
same sensor turns off.
• Malfunction of the
stapler/folder motor
• Loose connection of
the stapler/folder motor
• Loose connection of
the encoder sensor
• Defective encoder
sensor
• Loose connection of
the stapler switch
• Defective stapler
switch
• Loose connection of
the stapler home
position sensor
• Defective stapler home
position sensor
• Loose connection of
the folder-roller home-
position sensor
• Defective folder-roller
home-position sensor
1. Turn the main switch off and on.
2. Check the connection of the
stapler/folder motor.
3. Check the connection of the encoder
sensor.
4. Check the connection of the stapler
switch.
5. Check the connection of the stapler
home position sensor.
6. Check the connection of the folder-
roller home-position sensor.
7. Replace the stapler/folder motor.
8. Replace the encoder sensor.
9. Replace the stapler switch.
10. Replace the stapler home position
sensor.
11. Replace the folder-roller home-
position sensor.
B