6-38
CHAPTER 6 TROUBLESHOOTING
13. Faulty microswitch (related to MS2S)
14. Faulty microswitch (related to MS3S)
Checks
Check the switch actuator of
the front door. Do the switch
and the sensor operate
correctly?
Check the front door switch.
Is the switch normal?
Measure the voltage at J11-12
on the saddle stitcher
controller PCB with the front
door open. Is it 5 V?
Cause
Switch actuator
Front door switch
(MS2S)
Front door open/closed
sensor (PI12S)
Step
1
2
3
Yes/No
No
No
Yes
No
Action
Correct the
mechanism.
Replace the switch.
The sensor is faulty.
Replace the sensor.
Replace the saddle
stitcher controller
PCB.
Checks
Check the delivery door
switch actuator. Do the switch
and the sensor operate
correctly?
Check the delivery door
switch. Is the switch normal?
Measure the voltage at J11-9
on the saddle stitcher
controller PCB with the
delivery door open. Is it 5 V?
Cause
Switch actuator
Delivery switch (MS3S)
Delivery cover sensor
(PI3S)
Step
1
2
3
Yes/No
No
No
Yes
No
Action
Correct the
mechanism.
Replace the switch.
The sensor is faulty.
Replace the sensor.
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 ...