Sony HCD-GRX5 Service Manual page 49

PANEL BOARD IC601 TMP87CM74AF-6671
(FLUORESCENT INDICATOR TUBE DRIVE, LED DRIVE, KEY CONTROL)
Pin No. Pin Name
1 LED3
2 LED4
3 LED5
4 LED6
5 LED7
6 LED8
7 VSS
8 X-OUT
9 X-IN
10 RESET
11 LED9
12 LED10
13 TEST
14 LED11
15 LED12
16 LED13
17 LED14
18 LED15
19 VOL-A
20 VOL-B
21 JOG-A
22 JOG-B
23 SCL
24 SDA
25 L.SEL
26 KEY-0
27 KEY-1
28 KEY-2
29 KEY-3
30 MODEL
SPEANA
31
RESET
32 L+R
33 SIRCS
34 SPEANA-1
35 SPEANA-2
I/O
O
LED drive signal output terminal Not used (open)
O LED drive signal output terminal Not used (open)
O
LED drive signal output terminal (DISC 3)
O
LED drive signal output terminal (DISC 2)
O
LED drive signal output terminal (DISC 1)
O LED drive signal output terminal (ENTER, GROOVE)
—
Ground terminal
O
System clock output terminal (8 MHz)
I
System clock input terminal (8 MHz)
System reset signal input from the reset signal generator (IC502) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
O LED drive signal output terminal (JOG)
O LED drive signal output terminal (NON-STOP, + ), – 0)
I
Connected to ground
O
LED drive signal output terminal Not used (open)
O LED drive signal output terminal Not used (open)
O LED drive signal output terminal (CD ( P)
O LED drive signal output terminal (TAPE B (/9)
O LED drive signal output terminal (TAPE A (/9)
I
Rotary encoder pulse input from the S602 (VOLUME)
I
Rotary encoder pulse input from the S602 (VOLUME)
I
Jog dial pulse input from the S601 (JOG)
I Jog dial pulse input from the S601 (JOG)
Communication data reading clock signal input or transfer clock signal output with the system
I/O
controller (IC501)
I/O
Communication data bus with the system controller (IC501)
O
LED selection signal output terminal
Key input terminal (A/D input) (S604 to 610, 614 to 617)
FILE SELECT, SURROUND, KARAOKE PON/MPX, p, TIMER SELECT, CLOCK/
I
TIMER SET, DISPLAY/DEMO, FUNCTION, EDIT, PLAY MODE, REPEAT keys input
Key input terminal (A/D input) (S619 to 625)
I
FLASH, NON-STOP, – 0, ENTER, + ) , DBFB, GROOVE keys input
Key input terminal (A/D input) (S631 to 642)
TUNER/BAND, CD ( P, TAPE B (/9, TAPE A (/9, 1 / u (POWER), DISC 1/2/3,
I
DISC SKIP/EX-CHANGE, 6 keys input
Key input terminal (A/D input) (S618, 656 to 659)
I
LOOP, r REC, P PAUSE, HI-DUB, CD SYNC, keys input
I
Destination setting terminal
O
Reset signal output to the spectrum analyzer band-pass filter (IC603) "H": reset
Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter (IC603)
I
(for VACS, non-stop signal)
I
Remote control signal input from the remote control receiver (IC602)
Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter (IC603)
I
(for low frequency)
Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter (IC603)
I
(for low and middle frequency)
Function
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