Sony HCD-EC55 Service Manual page 54

HCD-EC55/EC77/GX99
Ver. 1.2
PANEL BOARD IC301 MB90803PF-G-130E1 (SYSTEM CONTROLLER)
Pin No. Pin Name
1 O-POWER
2 O-AMP-ON
3 O-FUNC-CLK
4 O-FUNC-DATA
5 I-CD-SW3
6 I-CD-SW2
7 I-CD-SW1
8 O-CD-M1+
9 I-RMC
10 O-CD-M1–
11 O-CD-M2+
12 O-CD-M2–
13 X0A
14 X1A
15 VCC
16 VSS
17 I/O-CD-BUS0
18 I/O-CD-BUS1
19 I/O-CD-BUS2
20 I/O-CD-BUS3
21 I-CD-CHACK
22 I-CD-CLOSE
23 I-CD-STOCK
24 I-CD-OPEN
25 O-CD-BUCK
26 O-CD-CCE
27 O-CD-RST
28 O-LED-STBY
29 I-CD-ZDET
30 O-CD-M-MUTE
31 O-CD-REQ
32 AVCC
33 I-TU-DO
34 O-TP-REC-MUTE
35 AVSS
36 I-P-MONI
37 I-KEY1
38 I-KEY2
39 I-TU-ANSD
40 I-TP-STATE
41 I-KEY-WAKE
42 I-HOLD
43 O-CD-SBSY
44 GND
45 O-LED
46 I-MODEL
47 I-SUFFIX
48 I-RE-VOL
54
I/O
O Power relay control signal output terminal
O AMP control signal output terminal
O Function select control serial data signal to IC602
O Function select control serial clock signal to IC602
I SW3 control input signal from CD
I SW2 control input signal from CD
I SW1 control input signal from CD
O M1+ control output signal terminal
I Remote sensor input signal terminal
O M1– control output signal terminal
O M2+ control output signal terminal
O M2– control output signal terminal
O Resonator output terminal (32.768KHz)
I Resonator input terminal (32.768KHz)
— Power supply terminal (+3.3V)
— Ground terminal
O CD data line to BD90
O CD data line to BD90
O CD data line to BD90
O CD data line to BD90
I CD chack switch (SW7) input terminal from BD90
I CD close switch (SW6) input terminal from BD90
I CD stock switch (SW5) input terminal from BD90
I CD open switch (SW8) input terminal from BD90
O CD clock output terminal
O CD chip select enable output terminal
O Zipang reset control output terminal
O STBY -LED control signal output terminal
O ZDET output terminal
O Motor driver mute signal output terminal
O CD DSP MP3 serial data request signal output terminal
— Power supply terminal (+3.3V)
O TU data output signal terminal
O Tape REC mute signal output terminal (Except US, CND)
— Ground terminal
I Power monitor signal input terminal
I KEY-CD board control signal (KEY-1) input terminal
I KEY-RIGHT board control signal (KEY-2) input terminal
I Tuner analog SD input terminal
I Tape deck statement monitor terminal (US, CND not used (Fixed to "L"))
I KEY-LEFT board control signal (KEY-0) input terminal
I IC301 stop mode control input terminal
I CD-SBSY signal input terminal
— Ground terminal
O LCD back light control output terminal
I Fixed model input terminal
I Fixed model suffix input terminal
I Input signal from the volume encoder
Description