6-32
CHAPTER 6 TROUBLESHOOTING
B.
Saddle Stitcher Unit
1.
Faulty paper positioning plate
2.
Faulty paper folding motor
Checks
Check the paper positioning
plate home position sensor. Is
the sensor normal?
Do the paper positioning
plates operate at a specific
timing?
Replace the paper positioning
plate motor. Is the problem
corrected?
Cause
Paper positioning plate
home position sensor
(PI7S)
Saddle stitcher controller
PCB
Paper positioning plate
motor (M4S)
Saddle stitcher controller
PCB
Step
1
2
3
Yes/No
No
Yes
No
Yes
No
Action
Replace the sensor.
Replace the saddle
stitcher controller
PCB.
Check the positioning
plate drive
mechanism. If a fault
is found, correct it.
Otherwise, go to step
3.
End.
Replace the saddle
stitcher controller
PCB.
Checks
Check the paper folding
motor clock sensor. Is the
sensor normal?
Check the paper folding home
position sensor. Is the sensor
normal?
Does the paper folding motor
operate at a specific timing?
Replace the paper folding
motor. Is the problem
corrected?
Cause
Paper folding motor
clock sensor (PI4S)
Paper folding home
position sensor (PI21S)
Saddle stitcher controller
PCB
Paper folding motor
(M2S)
Saddle stitcher controller
PCB
Step
1
2
3
4
Yes/No
No
No
Yes
No
Yes
No
Action
Replace the sensor.
Replace the sensor.
Replace the saddle
stitcher controller
PCB.
Check the paper
folding roller drive
mechanism. If a fault
is found, correct it.
Otherwise, go to step
4.
End.
Replace the saddle
stitcher controller
PCB.
Summary of Contents for MJ-1027
Page 1: ...SERVICE MANUAL FINISHER MJ 1027 1028 File No SME040041A0 R04102169300 TTEC Ver01_2007 09 ...
Page 5: ...ii ...
Page 9: ...vi ...
Page 70: ...2 41 CHAPTER 2 FINISHER UNIT BASIC OPERATION Height sensor PS1 Paper Figure 2 240 ...
Page 101: ...3 15 CHAPTER 3 SADDLE STITCHER UNIT BASIC OPERATION Figure 3 301 ...
Page 104: ...3 18 CHAPTER 3 SADDLE STITCHER UNIT BASIC OPERATION 2 A3 LD Paper Path 3 sheets Figure 3 303 ...
Page 116: ...3 30 CHAPTER 3 SADDLE STITCHER UNIT BASIC OPERATION Cam Mount Figure 3 404 ...
Page 173: ...6 CHAPTER 6 TROUBLESHOOTING II ARRANGEMENT OF ELECTRICAL PARTS A Finisher Unit ...
Page 235: ...2 17 2 HIGASHIGOTANDA SHINAGAWA KU TOKYO 141 8664 JAPAN ...