Sony TA-P9000ES service manual Ic Pin Function Description

4-9. IC PIN FUNCTION DESCRIPTION

•CONTROL BOARD IC801 TMP87C846N-4D22 (SYSTEM CONTROLLER)

Pin No.	Pin Name		I/O	Description
1	C6DBUP		O	Relay drive signal output for the +6 dB gain control (for CENTER input signal)
				“H”: +6 dB on
2	C12DBUP		O	Relay drive signal output for the +12 dB gain control (for CENTER input signal)
				“H”: +12 dB on
3	R6DBUP		O	Relay drive signal output for the +6 dB gain control (for REAR input signal) “H”: +6 dB on
4	R12DBUP		O	Relay drive signal output for the +12 dB gain control (for REAR input signal)						“H”: +12 dB on
5	MAINRY		O	Relay drive signal output for the power on/off control		“L”: standby mode, “H”: power on
6	OUTDRY		O	Relay drive signal output for the INPUT 1 or 2 signal		“L”: INPUT 2, “H”: INPUT 1
7	OUTCRY		O	Relay drive signal output for the output protect “L”: protect, “H”: releasing of						protect
8	OUTBRY		O	Relay drive signal output for the BYPASS 2ch input signal			“H”: BYPASS 2ch on
9	OUTARY		O	Relay drive signal output for the BYPASS 5.1ch input signal			“H”: BYPASS 5.1ch on
10	STANDBY LED		O	LED drive signal output of the STANDBY LED (D809) “L”: LED on
11	INPUT-1 LED		O	LED drive signal output of the input 1 LED (D810)		“L”: LED on
12	INPUT-2 LED		O	LED drive signal output of the input 2 LED (D811)		“L”: LED on
13	BP-5.1CH LED		O	LED drive signal output of the BYPASS 5.1ch input LED (D812)				“L”: LED on
14	BP-2CH LED		O	LED drive signal output of the BYPASS 2ch input LED (D813)				“L”: LED on
15	MUTE LED		O	LED drive signal output of the MUTING LED (LED on S802) “L”: LED on
16	VOL LED		O	LED drive signal output of the master volume LED (D815)			“L”: LED on
17		TEST	I	Test input terminal (fixed at “L”)
18		RESET	I	System reset signal input from the reset signal generator (IC805)				“L”: reset
				For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
19		XIN	I	Main system clock input terminal (8 MHz)
20		XOUT	O	Main system clock output terminal (8 MHz)
21		VSS	—	Ground terminal
22	VAREF		I	Reference voltage (+5V) input terminal
23		SW4	I	INPUT SELECTOR switch (S801) input terminal	“H”: input 1
24		SW3	I	INPUT SELECTOR switch (S801) input terminal	“H”: input 2
25		SW2	I	INPUT SELECTOR switch (S801) input terminal	“H”: BYPASS 5.1ch input
26		SW1	I	INPUT SELECTOR switch (S801) input terminal	“H”: BYPASS 2ch input
27		MUTE	I	MUTING switch (S802) input terminal “L” is input when key pressing
28	W. GAIN		I	WOOFER LEVEL up switch (S805) input terminal		“L” is input when key pressing
29	R. GAIN		I	REAR L/R LEVEL up switch (S804) input terminal		“L” is input when key pressing
30	C. GAIN		I	CENTER LEVEL up switch (S803) input terminal	“L” is input when key pressing
31	W12DBUP		O	Relay drive signal output for the +12 dB gain control (for WOOFER					input signal)
				“H”: +12 dB on
32	W6DBUP		O	Relay drive signal output for the +6 dB gain control (for WOOFER					input signal)
				“H”: +6 dB on
33		A-1 IN	I	Sircs remote control signal input for the S-LINK control A1
34	A-1 OUT		O	Sircs remote control signal output for the S-LINK control A1
35		—	I	Not used (fixed at “L”)
36		SIRCS	I	Remote control signal input from the remote control receiver (IC804)
37		VOL+	O	Motor drive signal output to the volume motor drive (IC803) (volume up direction)
38		VOL–	O	Motor drive signal output to the volume motor drive (IC803) (volume down direction)
39	STOP IN		I	Trigger input terminal
40		RCL	O	Serial clock signal output to the EEPROM (IC802)
41		RDT	I/O	Two-way data bus with the EEPROM (IC802)
42		VDD	—	Power supply terminal (+5V)

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