6-24
CHAPTER 6 TROUBLESHOOTING
5.
Faulty height sensor (adjustment)
6.
Faulty back-up RAM
7.
Faulty delivery motor
Checks
Try making adjustments using
the DIP switch once again. Is
the problem corrected?
Is the wiring between the
finisher controller PCB and
sensors normal?
Measure the voltage between
J6-2 (+) and J6-4 (
−
) on the
finisher controller PCB. Is it 5
VDC?
Cause
Adjustment
Wiring
Power supply
Height sensor (PS1)
Step
1
2
3
Yes/No
Yes
No
No
Yes
Action
End.
Correct the wiring.
Replace the finisher
controller PCB.
Replace the height
sensor.
Checks
Turn the delivery roller by
hand. Does it turn smoothly?
Check the delivery motor clock
sensor. Is the sensor normal?
Does the voltage between
J11-4 and J11-5 on the
finisher controller PCB
change to 24 VDC as soon as
the delivery motor starts to
rotate?
Cause
Deliver roller
Delivery motor clock
sensor (PI10)
Finisher controller PCB
Step
1
2
3
Yes/No
No
No
No
Yes
Action
Correct mechanical
operation.
Replace the sensor.
Replace the finisher
controller PCB.
Check the wiring from
the motor to the
controller PCB. If
normal, replace the
motor.
Checks
Turn the host machine OFF
then ON. Is the problem
corrected?
Replace the finisher controller
PCB and punch driver PCB. Is
the problem corrected?
Cause
Finisher controller PCB,
punch drive PCB
Step
1
2
Yes/No
Yes
Yes
Action
End.
End.
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 ...