Sony RMT-V294A, LX70S, RMT-V293A, LX60S, LX40, LX50 service manual Pin Name Function

5-7. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTIONS (MA-405 BOARD IC160)

Pin No.		Pin Name	I/O	Function
1	DEST		I	Destination control input
2	MPX MODE		I	STEREO/MONO/SAP DETECTION
3	TU AFT		I	Tuner analog AFT input
4	FUNC KEY2		I	Key input
5	FUNC KEY1		I	Key input
6	S SENS		I	Tape end sensor input
7	T SENS		I	Tape top sensor input
8	V RF ENV		I	Video playback signal envelope input
9	AF ANV		I	Hi-Fi audio playback signal envelope input
10	CBC ON		O	Cable box control signal output
11	KKP+		I	ETR pulese signal input
12	KKP–		I	ETR pulese signal input
13	QVD		O	Quasi VD pulese output
14	REMOCON		I	Remote sires signal input
15	C ROT		O	Head AZ signal output
16	HA SWP		O	SP/EP changed head signal
17	ENV SW		I	SP/EP head output lebel ditaction signal
18	RF SWP		O	VIDEO RF switching pulse output.
19	AF SWP		O	AF switching pulse output.
20	END LED		O	END sensor LED output
21	ANT SEL		O	TV/VTR RF modulator control output
22	AF REC P		O	Hi-Fi record control pulse output.
23	FE ON		—	NC
24	CAP RVS		O	Capstan reverse control
25	SUR ON		—	NC
26	MODE4		I	Mechanism section CAM encoder input (data4)
27	MODE3		I	Mechanism section CAM encoder input (data3)
28	MODE2		I	Mechanism section CAM encoder input (data2)
29	MODE1		I	Mechanism section CAM encoder input (data1)
30	REC PRF		I	Erasing protection tab, cassette IN detection input
31	I2C CLK EEP		I/O	HC CLOCK line (EEPROM)
32	I2C DATA EEP		I/O	HC DATA line (EEPROM)
33	CAM		O	Cam motor control signal output
34	RESET		I	System reset input
35	32kHz (in)		I	Sub clock 32MHz
36	32kHz (out)		O	Sub clock 32MHz
37	Vcc		I	5V
38	4fsc (in)		I	Main clock input
39	4fsc (out)		O	Main clock output
40	Vss		—	Ground
41	ARC CLK		O	Realityregenarator (ARC) control clock signal
42	ARC DATA		O	Realityregenarator (ARC) control data signal
43	CLK SEL		I	CLOCK seleal “L” Sub clock, “H” main and sub clock.
44	OSC IN		I	OSD clock input
45	OSC OUT		O	OSD clock output
46	NUB		—	Ground
47	LPF		I/O	fsc filter
48			O	“L” output when SP mode.
	SP
49	OSD GND		—	Ground
50	OSD V IN		I	OSD Video signal input.

5-3