Canon qy8-13az-000 service manual J704 Scanner Motor Signal name Function

J704 (Scanner Motor)
No.	Signal name	Function
1	SC_MAN	Scanner motor phase A-
2	SC_MA	Scanner motor phase A+
3	SC_MB	Scanner motor phase B+
4	SC_MBN	Scanner motor phase B-
J801 (Scanner Unit)
No.	Signal name	Function
1	GND	Digital ground
2	LED_R	LED drive signal （Red）
3	LED_G	LED drive signal （Green）
4	LED_B	LED drive signal （Blue）
5	LED_Vｃｃ	LED power supply
6	XPH1	Clock output
7	XTG	SH output
8	REV_V	CIS reference power supply
9	Vcc(3.3V)	CIS power supply
10	GND	Digital ground
11	XPH2（RES_SEL)	CIS resolution switch

Input / Output

OUT

OUT

OUT

OUT

J901 (Memory Card)
No.	Signal name	Function	Input /
			Output
1	+3.3V	Drive power supply +3.3V	OUT
2	D-	D- signal	BUS
3	D+	D+ signal	BUS
4	GND	Ground	-
5	DOOR	Cover switch signal	IN
6	CARD_RST	Card reset signal	OUT
7	CARD_INT	Card interruption signal	IN
8	GND	Ground	-
9	IR_RXD	IrDA reception signal	IN
10	IR_TXD	IrDA transmission signal	IN
11	+5.0V	Drive power supply +5.0V	OUT
12	VBUS	PictBridge VBUS power supply	OUT
13	D-	D- signal	BUS
14	D+	D+ signal	BUS
15	S_GND	System ground	-

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