Sony HCD-GRX50 Service Manual page 48

PANEL
PANEL BOARD IC601 TMP88CS76F-6004 (FLUORESCENT INDICATOR TUBE DRIVER, KEY CONTROL)
BOARD
Pin No. Pin Name
1 SIRCS
2 JOG-A
3 LED SCK
4 LED LAT
5 LED DATA
6 PAD LAT
7 L SEL
8 JOG-B
9 VOL-A
10 VOL-B
11 KEY0
12 KEY1
13 KEY2
14 KEY3
15 GRAD L2
S LOW FREQ
16
(BPF0)
17 BPF1
18 BPF2
19 BPF3
20 BPF4
ALL BAND
21
(L+R)
22 WAKE UP
23 VSS
24 VASS
25 VAREF
26 VDD
27 to 32 G18 to G13
33 to 40
G12 to G5
41 VDD
42 to 44
G4 to G2
45
G1
46 to 67 S1 to S22
68 VKK
69 VDD
I/O
I
Remote control signal input from the remote control receiver (IC602)
I Jog dial pulse input from the rotary encoder (S601 JOG) (A phase input)
O
Serial data transfer clock signal output to the LED driver (IC604)
O
Serial data latch pulse signal output to the LED driver (IC604)
O
Serial data output to the LED driver (IC604)
O Not used (open)
O
LED selection signal output terminal
I
Jog dial pulse input from the rotary encoder (S601 JOG) (B phase input)
I
Jog dial pulse input from the rotary encoder (S602 VOLUME) (A phase input)
I
Jog dial pulse input from the rotary encoder (S602 VOLUME) (B phase input)
Key input terminal (A/D input) (S625 to S630)
I REC PAUSE/START, HI-DUB, CD SYNC, LOOP, DISPLAY, SPECTRUM ANALYZER keys
input
Key input terminal (A/D input) (S611 to S621)
I
SYNC BASS, SYNC EQ, KARAOKE PON/MPX, NON-STOP, SURROUND, DBFB,
ENTER/NEXT, + ), – 0, GROOVE, FLASH keys input
Key input terminal (A/D input) (S638 to S642 and S751 to S757)
TIMER SELECT, FILE SELECT, REPEAT STEREO/MONO, PLAY MODE/DOLBY NR,
I
EDIT/DIRECTION TUNER MEMORY, I/u, (STANDBY) POWER SAVE DEMO, DISC 1/2/3,
DISC SKIP EX-CHANGE, § keys input
Key input terminal (A/D input) (S643 to S651)
I TUNER/BAND, ( P CD, p, ( TAPE B, 9 TAPE B, ( TAPE A, 9 TAPE A,
FUNCTION, CLOCK/TIMER SET keys input
O
Not used (open)
Spectrum analyzer drive (super low frequency) signal input from the spectrum analyzer band-
I
pass filter (IC603) (for 40 Hz)
Spectrum analyzer drive (low frequency) signal input from the spectrum analyzer band-pass filter
I
(IC603) (for 100 Hz)
Spectrum analyzer drive (low and middle frequency) signal input from the spectrum analyzer
I
band-pass filter (IC603) (for 400 Hz)
Spectrum analyzer drive (middle and high frequency) signal input from the spectrum analyzer
I
band-pass filter (IC603) (for 2 kHz)
Spectrum analyzer drive (high frequency) signal input from the spectrum analyzer band-pass filter
I
(IC603) (for 6 kHz)
Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter (IC603)
I
(for VACS, non-stop signal)
O
Wakeup control signal output to the system controller (IC501) "H" active
—
Ground terminal
—
Ground terminal (for A/D conversion)
I Reference voltage (+5V) input terminal (for A/D conversion)
—
Power supply terminal (+5V)
O
Grid drive signal output to the fluorescent indicator tube (FL601)
O
Grid drive signal output to the fluorescent indicator tube (FL601)
—
Power supply terminal (+5V)
O
Grid drive signal output to the fluorescent indicator tube (FL601)
O
Grid drive signal output to the fluorescent indicator tube (FL601)
O Segment drive signal output to the fluorescent indicator tube (FL601)
—
Power supply terminal (–30V) (for fluorescent indicator tube drive)
—
Power supply terminal (+5V)
Function
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