Sony HCD-XB66 Service Manual page 25

• PANEL BOARD IC601 TMP87CH75F-6659
(FLUORESCENT INDICATOR TUBE DRIVE, LED DRIVE, KEY CONTROL)
Pin No. Pin Name I/O
1 SEG-35 O
Segment drive signal output to the fluorescent indicator tube (FL601)
2 V-LOAD — Power supply terminal (–30V) (for fluorescent indicator tube drive)
3 LED1 O LED drive signal output terminal (TUNER/BAND)
4 LED2 O
LED drive signal output terminal (ENTER/NEXT, GROOVE)
5 LED3 O LED drive signal output terminal (SUPER WOOFER, CD P)
6 LED4 O LED drive signal output terminal (CD ·)
7 LED5 O LED drive signal output terminal (DECK B ª)
8 LED6 O LED drive signal output terminal (DECK B ·)
9 LED7 O
LED drive signal output terminal (TAPE P, r REC)
10 LED8 O LED drive signal output terminal (EFFECT, ENTER)
11 VSS — Ground terminal
12 X-OUT O
System clock output terminal (8 MHz)
13 X-IN I System clock input terminal (8 MHz)
System reset signal input from the reset signal generator (IC302) "L": reset
14 RESET I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
15 LED9 O LED drive signal output terminal (FILE 1, FILE 2)
16 LED10 O LED drive signal output terminal (FILE 3, FILE 4)
17 TEST I
Connected to ground
18 LED11 O LED drive signal output terminal (FILE 5, P FILE)
19 LED12 O LED drive signal output terminal (OTHERS, MUSIC)
20 LED13 O
LED drive signal output terminal Not used (open)
21 LED14 O LED drive signal output terminal Not used (open)
22 LED15 O
LED drive signal output terminal (DECK A ·)
23 LED16 O LED drive signal output terminal (DECK A ª)
24 VOL-A I Rotary encoder pulse input from the S701 (VOLUME)
25 LED17 O
LED drive signal output terminal Not used in this set
26 JOG-A I Jog dial pulse input from the S711 (≠ AMS ± jog dial)
Communication data reading clock signal input or transfer clock signal output with the system
27 CLOCK I/O
controller (IC301)
28 DATA I/O Communication data bus with the system controller (IC301)
29 LED SELECT O LED selection signal output terminal
30 VDD —
Power supply terminal (+5V)
31 VSS — Ground terminal
32 MODEL I Destination setting terminal
Key input terminal (A/D input) (S601 to 607, 609 to 616)
ENTER/NEXT, TUNER MEMORY, TUNING MODE, TUNER/BAND, TUNING +/–,
33 KEY-1 I
STEREO/MONO, FUNCTION, GROOVE, GEQ 4/9/(/$, SUPER WOOFER, SUPER W
MODE keys input
Key input terminal (A/D input) (S621 to 625, 651 to 659)
EFFECT, SOUND CONTROL WAVE, KARAOKE PON/MPX, SOUND CONTROL
34 KEY-2 I
SURROUND, P FILE MEMORY, DECK B ·/ª/)/0/p/P, r REC, H SPEED DUB,
CD SYNC keys input
Key input terminal (A/D input) (S619, 620, 676 to 679, 681 to 686)
35 KEY-3 I GEQ CONTROL, ENTER, CD ·/p/P, DISC SKIP, CD ), REPEAT, PLAY MODE,
1/ALL DISCS, EDIT, CD 0 keys input
Key input terminal (A/D input) (S627 to 634, 667, 668)
SPECTRUM ANALYZER, DISPLAY/DEMO, POWER, t/CLOCK SET, REC, DAILY 1/2,
36 KEY-4 I
SLEEP, NON-STOP, DJ MIX LOOP keys input
Function
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Pin No. Pin Name I/O
Key input terminal (A/D input) (S641 to 647, 661 to 666)
37 KEY-5 I DECK A ·/ª/p/0/), DOLBY NR, DIRECTION, DIRECT PLAY DISC 1/2/3/4/5, DJ
MIX FLASH keys input
38 DOOR SW I
CD door switch (S691 (6 OPEN)) input terminal
39 SIRCS I
Remote control signal input from the remote control receiver (IC602)
40 VOL-B I
Rotary encoder pulse input from the S701 (VOLUME)
41 JOG-B I Jog dial pulse input from the S711 (≠ AMS ± jog dial)
42 SPEANA-1 I
Spectrum analyzer drive (for low frequency) signal input terminal
43 SPEANA-2 I Spectrum analyzer drive (for low and middle frequency) signal input terminal
44 SPEANA-3 I Spectrum analyzer drive (for middle and high frequency) signal input terminal
45 SPEANA-4 I
Spectrum analyzer drive (for high frequency) signal input terminal
46 L+R I Spectrum analyzer drive (for VACS, non-stop signal) signal input terminal
47 LED18 O LED drive signal output terminal (NON-STOP)
48 VASS —
Ground terminal
49 VAREF I Reference voltage (+5V) input terminal (for A/D conversion)
50 VDD —
Power supply terminal (+5V)
51 to 66 GR-1 to GR-16 O
Grid drive signal output to the fluorescent indicator tube (FL601)
67 to 100 SEG-1 to SEG-34 O Segment drive signal output to the fluorescent indicator tube (FL601)
Function
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