Sony HCD-RX77 - Panel Board IC601 Pin Functions

– 85 –
• PANEL BOARD IC601 TMP87PM74F-6695
Pin No. Pin Name I/O Function
1 LED3 O
LED drive signal output terminal Not used (open)
2 LED4 O
LED drive signal output terminal Not used (open)
3 LED5 O
LED drive signal output terminal (DISC 3)
4 LED6 O
LED drive signal output terminal (DISC 2)
5 LED7 O
LED drive signal output terminal (DISC 1)
6 LED8 O
LED drive signal output terminal (ENTER/NEXT, GROOVE)
7 VSS —
Ground terminal
8 X-OUT O
System clock output terminal (8 MHz)
9 X-IN I
System clock input terminal (8 MHz)
10 RESET I
System reset signal input from the reset signal generator (IC502) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
11 LED9 O
LED drive signal output terminal (JOG, DJ MIX)
12 LED10 O
LED drive signal output terminal (NON-STOP, + ), – 0)
13 TEST I
Connected to ground
14 LED11 O
LED drive signal output terminal Not used (open)
15 LED12 O
LED drive signal output terminal (EFFECT) Used for the GRX7/GRX7J/RX77: Canadian
(Except GRX7/GRX7J/RX77: Canadian; Not used (open))
16 LED13 O
LED drive signal output terminal (CD ( P)
17 LED14 O
LED drive signal output terminal (TAPE B (/9)
18 LED15 O
LED drive signal output terminal (TAPE A (/9)
19 VOL-A I
Rotary encoder pulse input from the S602 (VOLUME)
20 VOL-B I
Rotary encoder pulse input from the S602 (VOLUME)
21 JOG-A I
Jog dial pulse input from the S601 (= ↔ + DJ MIX)
22 JOG-B I
Jog dial pulse input from the S601 (= ↔ + DJ MIX)
23 SCL I/O
Communication data reading clock signal input or transfer clock signal output with the system
controller (IC501)
24 SDA I/O
Communication data bus with the system controller (IC501)
25 L.SEL O
LED selection signal output terminal
26 KEY-0 I
27 KEY-1 I
Key input terminal (A/D input) (S619 to 625)
FLASH, NON-STOP, – 0, ENTER/NEXT, + ) , DBFB, GROOVE keys input
28 KEY-2 I
29 KEY-3 I
Key input terminal (A/D input) (S618, 655 to 659) (S655 PTY: AEP, UK, German models only)
LOOP, PTY, r REC, P PAUSE, HI-DUB, CD SYNC, keys input
30 MODEL I
Destination setting terminal
31
SPEANA
RESET
O
Reset signal output terminal “H”: reset Not used (open)
32 L+R I
Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter (IC603)
(for VACS, non-stop signal)
33 SIRCS I
Remote control signal input from the remote control receiver (IC602)
(FLUORESCENT INDICATOR TUBE DRIVE, LED DRIVE, KEY CONTROL)
Key input terminal (A/D input) (S631 to 642)
TUNER/BAND, CD ( P, TAPE B (/9, TAPE A (/9, I/u (POWER), DISC 1/2/3,
DISC SKIP/EX-CHANGE, 6 keys input
Key input terminal (A/D input) (S604 to 617) (S611 to 613 FILE SELECT, GEQ CONTROL, P
FILE MEMORY; GRX7/GRX7J/RX77: Canadian model only)
FILE SELECT (AEP, UK, German, East European, CIS models), EFFECT (GRX7/GRX7J/
RX77: Canadian), SURROUND, KARAOKE PON/MPX, p, TIMER SELECT, CLOCK/
TIMER SET, DISPLAY/DEMO, FILE SELECT, GEQ CONTROL, P FILE MEMORY,
FUNCTION, EDIT/DIRECTION, PLAY MODE/DOLBY NR, REPEAT keys input