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CHAPTER 2 FINISHER UNIT BASIC OPERATION
III. POWER SUPPLY SYSTEM
1.
Outline
The finisher controller PCB is supplied with 24 VDC power (and 5 VDC power) when the host
machine is turned on. 24 VDC one is used to drive the motor solenoids, while 5 VDC is used for
sensors and ICs on PCBs. Both lines are also used to feed power from the finisher controller PCB
to the saddle stitcher controller PCB. Power is also supplied to the punch driver PCB when the
optional puncher unit is mounted.
Some of the 24 VDC power used to drive motors is cut off when the door switch (MS1) is open.
The power to the saddle stitcher controller PCB, however, will not be cut off.
Figure 2-301 is a block diagram showing the power supply system.
J1-1
J2-6
Saddle stitcher
controller PCB
(Saddle Stitch Finisher)
Door switch
Circuit breaker
Motor
Motor
Solenoid
Host
machine
Finisher controller PCB
Sensors
Logic
Punch driver PCB
(Puncher Unit (option))
(CB1)
(MS1)
Figure 2-301
2.
Protection Functions
The 24 VDC power line used to drive motors and solenoids is equipped with a circuit breaker
(CB1) for protection against overcurrent. The 24 V line used to drive the first feed motor (M1),
alignment motor (M3), and stapler shift motor (M4) are equipped with a fuse, which is designed to
blow when an overcurrent occurs.
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 ...