Toshiba MJ-1103, MJ-1104 Description Of Circuit, Finishier section, Buffer roller drive circuit

3.3Description Of Circuit

3.3.1Finishier 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.

TIOCA4	MOT4-	MOT4-	MOT4-	Motor rotation	Remarks
	DIR	CUR1	CUR0
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

Finisher control PC board
				3.3V	VM
	P-RESET		5			24		MT4-OUT1A
	P-RESET		13
IC21						1		MT4-OUT2A
	TIOCA4		16	IC47			CN11		Buffer roller
CPU
									drive motor
				Motor driver		21		MT4-OUT1B
	MOT4-DIR		20						(M4)
	MOT4-CUR0	Current	17			4		MT4-OUT2B
		control
	MOT4-CUR1
		circuit
					SG
					Fig. 3-28

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	DESCRIPTION OF OPERATIONS

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