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© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved MJ-1103/1104
DESCRIPTION OF OPERATIONS
3 - 23
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.
Fig. 3-28
TIOCA4
MOT4-
DIR
MOT4-
CUR1
MOT4-
CUR0
Motor rotation Remarks
Clock signal H L H Normal (Low power) Paper is transported to the movable tray.
Clock signal H L L Normal (Normal power)
Clock signal L L H Reverse (Low power) Not used.
Clock signal L L L Reverse (Normal
power)
--H- Stop
IC21
CPU
TIOCA4
MOT4-DIR
MT4-OUT1A
VM
MT4-OUT2A
MT4-OUT1B
MT4-OUT2B
SG
MOT4-CUR0
24
4
1
21
5
MOT4-CUR1
16
20
13
P-RESET
P-RESET
3.3V
Buffer roller
drive motor
(M4)
IC47
Motor driver
Finisher control PC board
CN11
17
Current
control
circuit