Sony CDX-MP40 service manual Tuner power supply control signal output

CDX-MP40

Pin No.		Pin Name			I/O	Pin Description
69				TU ON	O	Tuner power supply control signal output
70					O	Electronic volume ATT control signal output to the electronic volume
			VOLATT
71				NCO	O	Not used. (Open)
72			AMPON		O	Power amplifier standby control signal output to the power amplifier
73				NCO	O	Not used. (Open)
74			AMPATT		O	Power amplifier ATT control signal output to the power amplifier
75	DOORIND				O	Sub panel power supply control signal output
76 – 84				NCO	O	Not used. (Open)
85		NS MASK			O	Noise mask signal output
86			EE_CKO		O	EEPROM serial clock output
87				EE_SIO	I/O	EEPROM serial data input/output
88				TUATT	O	Tuner ATT signal output to the tuner unit
89, 90				NCO	O	Not used. (Open)
91					O	Power supply control signal to the function key
		XKEYON
92				ILL ON	O	Illumination power supply control signal output
93				NCO	O	Not used. (Open)
94					I	Front panel open/close detection signal input “L”: close, “H”: open
		DOORSW
95				DAVSS	—	Ground pin for D/A converter
96				NCO	O	Not used. (Open)
97					I	Flash write detection signal input
		FLASH W
98					I	Remote commander shift key signal input from the remote-in jack “L”: shift key on
				RC_IN1
99				NCO	O	Not used. (Connected to ground.)
100				DAVDD	—	Power supply pin for D/A converter

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