HCD-GV10AV - Sony Audio Service Manual (repair manual). Page 69

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Pin No.

Pin Name

I/O

Description

1

SIRCS

I

Remote control signal input from the remote control receiver (IC702)

2

KEY POWER 

SAVE/DEMO

I

Power save/demonstration switch (S609 POWER SAVE/DEMO (STANDBY)) input terminal
“L” is input when key pressing

3

LED SCK

O

Serial data transfer clock signal output to the LED driver (IC701)

4

KEY POWER 

ON/OFF

I

Power on/off switch (S608 I/1) input terminal    “L” is input when key pressing

5

LED DAT

O

Serial data output to the LED driver (IC701)

6

LED LATCH

O

Serial data latch pulse signal output to the LED driver (IC701)

7

LED SEL

O

LED selection signal output

8

WAKE UP

O

Wakeup control signal output to the system controller (IC501)    “L” active

9

VOL A

I

Jog dial pulse input from the rotary encoder (S736 VOLUME) (A phase input)

10

VOL B

I

Jog dial pulse input from the rotary encoder (S736 VOLUME) (B phase input)

11

KEY 0

I

Key input terminal (A/D input)    S601 to S607, S727 to S730, S733 to S735
(DISPLAY, SPECTRUM ANALYZER, TIMER SELECT, SLEEP, c/CLOCK SET, GAME, 
FUNCTION, ROCK, MOVIE, REGGAE, KARAOKE PON/MPX, PRO LOGIC, DVD 5.1CH, 
KEY CONTROL #) keys input

12

KEY 1

I

Key input terminal (A/D input)
S621 to S627, S743 to S750 (H, h, x, . AMS > m/M, DOLBY NR, DIRECTION,
CD FLASH, EDIT, NON-STOP, DISC1/2/3/4/5) keys input

13

KEY 2

I

Key input terminal (A/D input)
S615 to S619, S716 to S726 (h, H, x, . AMS > m/M, POP, JAZZ, SAMBA, 
DANCE, TANGO, SALSA, GAME, b, v, V, B) keys input

14

KEY 3

I

Key input terminal (A/D input)    S701 to S715, S741 (TUNER MEMORY, ENTER/TEXT, –, 
TUNER/BAND, +, STEREO/MONO, TUNING MODE, ENTER, P.FILE, FLAT, KEY 
CONTROL 2, DSP, GROOVE, SUPER WOOFER, SUPER WOOFER MODE, CD LOOP) keys 
input

15

KEY 4

I

Key input terminal (A/D input)    S611 to S614, S751 to S762 (X, z REC, H SPEED DUB, CD 
SYNC, HX, x, m, M, DISC SKIP, REPEAT, PLAY MODE, NEXT, PREV, RETURN, 
SELECT, ACTIVE) keys input

16

GUITAR 

DISTORTION

O

Distortion on/off control signal output terminal    Not used

17

BPF 0

I

Spectrum analyzer drive (super low frequency)  signal input from the spectrum analyzer band-
pass filter (IC602) (for 40 Hz)

18

BPF 1

I

Spectrum analyzer drive (low frequency)  signal input from the spectrum analyzer band-pass filter 
(IC602) (for 100 Hz)

19

BPF 2

I

Spectrum analyzer drive (low and middle frequency) signal input from the spectrum analyzer 
band-pass filter (IC602) (for 400 Hz)

20

BPF 3

I

Spectrum analyzer drive (middle and high frequency) signal input from the spectrum analyzer 
band-pass filter (IC602) (for 2 kHz)

21

BPF 4

I

Spectrum analyzer drive (high frequency) signal input from the spectrum analyzer band-pass filter 
(IC602) (for 6 kHz)

22

ALL BAND

I

Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter (IC602)
(for VACS, non-stop signal)

23

VSS

—

Ground terminal

24

VASS

—

Ground terminal (for A/D conversion)

25

VAREF

I

Reference voltage (+5V) input terminal (for A/D conversion)

26

VDD

—

Power supply terminal (+5V)

27, 28

GR-16, GR-15

O

Grid drive signal output to the fluorescent indicator tube (FL601)

29 to 40

GR-14 to GR-3

O

Grid drive signal output to the fluorescent indicator tube (FL601)

41

VDD VFT

—

Power supply terminal (+5V)