Canon qy8-13az-000 service manual J501 LF Encoder Signal name Function

J303 (Print Head 3/3 [Carriage Unit])
No.	Signal name	Function	Input /
			Output
1	AB_PWR	Ink tank sensor chip power supply	OUT
2	AB_DATA	Ink tank sensor data power supply	BUS
3	AB_PWR	Ink tank sensor chip power supply	OUT
4	AB_CLK	Ink tank sensor data transfer clock signal	BUS
5	THERMO	Carriage temperature sensor signal	IN
6	H_ENB2	Head heat enable signal 2	OUT
7	HD9_Y2	Head data (Y2)	OUT
8	HD13_C2	Head data (C2)	OUT
9	HD11_M2	Head data (M2)	OUT
10	HD12_SC2	Head data (SC2)	OUT
11	HD10_SM2	Head data (SM2)	OUT
12	ROM_DIO	Head EEPROM input - output data	IN/OUT
13	SGND	System ground	-
14	H_CLK	Head data transfer clock signal	OUT
15	SGND	System ground	-
16	ROM_SK	Head EEPROM serial clock signal	OUT
17	HLAT	Head data latch signal	OUT
18	HD8_Y1	Head data (Y1)	OUT
19	ROM_CS	Head EEPROM chip select signal	OUT
20	HENB1	Head heat enable signal1	OUT
21	HENB3	Head heat enable signal 3	OUT
22	HD2_C1	Head data (C1)	OUT
23	HENB0	Head heat enable signal0	OUT
24	HD0_K1	Head data (BK1)	OUT
25	HD4_M1	Head data (M1)	OUT
26	HD1_K2	Head data (BK2)	OUT
27	HD5_SM1	Head data (SM1)	OUT
28	HD3_SC1	Head data (SC1)	OUT

J501 (LF Encoder)

No.	Signal name	Function
1	GND	Ground
2	ENCA	LF encoder phase A
3	VSEN	Sensor power supply +3.3V
4	ENCB	LF encoder phase B

Input / Output

-

IN

OUT

IN

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