Toshiba MJ-1104, MJ-1103 service manual Saddle transport motor drive circuit, Paper is transported

[D] Saddle transport motor drive circuit

The saddle transport motor drive circuit controls the rotation and stoppage, rotational direction and motor current of the saddle transport motor.

The saddle transport motor is driven by pulse signals (MOT2-OUT1A, MOT2-OUT1B, MOT2-OUT2A and MOT2-OUT2B) output from the motor driver (IC8) under the command of a clock signal (TIOCA0),

arotational direction signal (MOT2-DIR) and current setting signals (MOT2-CUR1 and MOT2-CUR0) from the CPU of the saddle control PC board, and thus this motor rotates the transport roller and the ejecting roller, and drives the paper holding cam in conjunction with the paper holding clutch.

TIOCA0	MOT2-	MOT2-	MOT2-	Motor rotation	Remarks
	DIR	CUR1	CUR0
Clock signal	H	L	H	Normal (Low power)	Paper is transported
					(at a transport speed lower than 200 mm/
					s).
Clock signal	H	L	L	Normal (Low power)	Paper is transported
					(at a transport speed 400 mm/s or higher).
Clock signal	L	L	H	Reverse (Low power)	Paper is transported
					(at a transport speed lower than 200 mm/
					s).
Clock signal	L	L	L	Reverse (Low power)	Paper is transported
					(at a transport speed 400 mm/s or higher).
-	-	H	-	Stop

Saddle control PC board
		3.3V	VM
	TIOCA0	10		1		MOT2-A
MOT2-DIR		16		2
IC31	P-RESET	15		3		MOT2-C
				4
			IC8		CN8		Saddle
CPU
							transport motor
P-RESET		Motor driver		23		MOT2-B	(M16)
MOT2-CUR0	Current	13		22
	control
MOT2-CUR1	circuit			21		MOT2-D
				20
			SG
			Fig. 3-44

MJ-1103/1104	© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved
DESCRIPTION OF OPERATIONS

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