JVC KD-LX555R service manual Pin No

Pin No	Symbol	I/O	Function
41	LCD_DA	O	Data output to LCD driver
42	LCD_SCK	O	Clock output to LCD driver
43	LCD-CE1	O	Chip enable output 1 to LCD driver
44	BUZZER	O	Buzzer output
45	12C_DAI	I	12C communication data input
46	12C_DAO	O	12C communication data output
47	12C-CLK	O	12C communication clock output
48	BUS-I/O	O	J-BUSI/O signal terminal
49	TMO	O	Tray motor negative signal output terminal
50	TM1	O	Tray motor positive signal output terminal
51	DMO	O	Motor control signal output in door down
52	DM1	O	Motor control signal output in door up
53	ST	I	Stereo signal input L:Stereo
54	NC	-	Not use
55	AFCK	O	AF check output AF check:L
56	C_SW1	I	Chameleon machanical switch 1 detection signal input
57	C_SW2	I	Chameleon machanical switch 2 detection signal input
58	C_SW3	I	Chameleon machanical switch 3 detection signal input
59	C_SW4	I	Chameleon machanical switch 4 detection signal input
60	C_SW5	I	Chameleon machanical switch 5 detection signal input
61	VOL1	I	Rotary volume signal 1 input
62	VOL2	I	Rotary volume signal 2 input
63	SEEK/STP	O	Auto seek/stop selection output SEEK:L STOP:H
64	NC	-	Not use
65	FM/AM	-	FM/AM selection output FM:H AM:L
66	PLL_CE	O	IC control CE output
67	PLL_DO	O	IC control data output
68	PLL_CLK	O	IC control clock output
69	PLL_DI	I	IC control data input
70	TEL_MUTE	I	Telephone mute detection input
71	NC	-	Not use
72	VSS	-	GND
73	DIM_IN	I	Dimmer detection input L:dimmer ON
74	PS1	I	Power save 1 Operating together with ACC.Power save :L Operating :H
75	POWER	O	Power ON/OFF selection output Power ON:H
76	CD_ON	O	CD power supply control signal output CD:H
77	MUTE	O	Mute output MUTEON:L
78	CD_RESET	O	Subwoofer cut off frequency control output 1
79	CD_MUTE	O	Subwoofer cut off frequency control output 2
80	NC	-	Not use
81	VDD	-	5V
82	VOL_DA	O	data output terminal
83	VOL_CLK	O	clock signal output terminal
84	CF-SEL	O	FM band filter selection signal output
85	NC	O	Not use
86	LCD_RST	O	Reset signal output to LCD driver
87~93	NC	-	Not use
94	TEST	-	GND
95~100	NC	-	Not use

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