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Description Of Circuit; Finishier Section - Toshiba MJ-1104 Service Manual

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3.3

Description Of Circuit

3.3.1

Finishier section

[A] Buffer roller drive circuit
The buffer roller drive circuit controls the rotation and stoppage, rotational direction and motor current of
the buffer roller drive motor.
The buffer roller drive motor is driven by pulse signals (MT4-OUT1A, MT4-OUT1B, MT4-OUT2A and
MT4-OUT2B) output from the motor driver (IC47) under the command of a clock signal (TIOCA4), a
rotational direction signal (MOT4-DIR) and a current setting signals (MOT4-CUR1 and MOT4-CUR0)
from the CPU of the finisher control PC board, and thus this motor rotates the buffer roller.
MOT4-
MOT4-
TIOCA4
DIR
CUR1
Clock signal
H
Clock signal
H
Clock signal
L
Clock signal
L
-
-
Finisher control PC board
IC21
CPU
MOT4-CUR0
MOT4-CUR1
© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved
MOT4-
Motor rotation
CUR0
L
H
Normal (Low power)
L
L
Normal (Normal power)
L
H
Reverse (Low power)
L
L
Reverse (Normal
power)
H
-
Stop
VM
3.3V
P-RESET
5
P-RESET
13
IC47
TIOCA4
16
Motor driver
MOT4-DIR
20
Current
17
control
circuit
SG
Fig. 3-28
3 - 23
Remarks
Paper is transported to the movable tray.
Not used.
24
MT4-OUT1A
1
MT4-OUT2A
21
MT4-OUT1B
4
MT4-OUT2B
DESCRIPTION OF OPERATIONS
Buffer roller
drive motor
(M4)
MJ-1103/1104
3

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Mj-1103