CX-JS7, JAX-S7 - Sony Audio Service Manual (repair manual). Page 52

52

Pin No.

Pin Name

I/O

Description

54

S9/I-B-MODE

I/O

Segment drive signal output to the fluorescent indicator tube and deck-B mode detection signal
input from the tape mechanism deck block    “L” active

55

S10/I-REC (REW)

I/O

Segment drive signal output to the fluorescent indicator tube and recording-proof (reverse
direction) detection signal input from the tape mechanism deck block
“L”: recording possible

56 to 68

S11 to S23

O

Segment drive signal output to the fluorescent indicator tube

69 to 71

S24 to S26

O

Segment drive signal output to the fluorescent indicator tube    Not used

72

VDD4

—

Power supply terminal (+3.3V)

73 to 75

—

—

Not used

76

I-HP-MUTE

I

Headphone detection signal input terminal    “H”: headphone in

77

I-TRE B

I

Jog dial pulse input from the rotary encoder (TREBLE/MIDDLE) (B phase input)

78

I-TRE A

I

Jog dial pulse input from the rotary encoder (TREBLE/MIDDLE) (A phase input)

79

I-BASS B

I

Jog dial pulse input from the rotary encoder (BASS) (B phase input)

80

I-BASS A

I

Jog dial pulse input from the rotary encoder (BASS) (A phase input)

81

I-JOG B

I

Jog dial pulse input from the rotary encoder (jog dial) (B phase input)

82

I-JOG A

I

Jog dial pulse input from the rotary encoder (jog dial) (A phase input)

83

I-VOL B

I

Jog dial pulse input from the rotary encoder (VOLUME) (B phase input)

84

I-VOL A

I

Jog dial pulse input from the rotary encoder (VOLUME) (A phase input)

85

I-WRQ

I

CD interruption signal input from the CD DSP

86

I-CD DRF

I

CD focus on/off detection signal input from the CD DSP

87

I-LC72121 DI

I

Serial data input from the tuner unit

88

I-TUNER TUNE

I

Tuning detection signal input from the tuner unit    “L”: tuned

89

VSS2

—

Ground terminal

90

VDD2

—

Power supply terminal (+3.3V)

91

O-LC72121/

M61529/BU2099

DO

O

Serial data output to the tuner unit, electrical volume and LED driver

92

O-LC72121/

BU2099 CLK

O

Serial data transfer clock signal output  tuner unit, LED driver, tape mechanism controller, multi
controller and bass boost controller

93

O-POWER LED

O

LED drive signal output of the POWER 1 STANDBY/ON indicator    “L”: LED on

94

O-POWER RELAY

O

Power on/off relay drive signal output terminal    “H”: power on

95

O-KEYSCAN

O

Key scan signal output for initial diode and switches in the tape mechanism deck
“L”: key scan

96

I-CD NUMBER

SENS

I

CD table address detection signal input terminal

97

I-TUNER STEREO

I

FM stereo detection signal input from the tuner unit    “L”: stereo

98

O-LC78646/

LC78684 DO

O

Serial data output to the CD DSP and MP3 decoder

99

I-LC78646/

LC78684 DI

I

Serial data input from the CD DSP and MP3 decoder

100

O-LC78646/

LC78684 CLK

O

Serial data transfer clock signal output to the CD DSP and MP3 decoder