Diagrams; Explanation Of Ic Terminals - Sony PMC-DR50 Service Manual

SECTION 5

DIAGRAMS

5-1. EXPLANATION OF IC TERMINALS

IC801 CXP82832-022Q (SYSTEM CONTROL, FL DRIVE)
Pin No. Pin name I/O Description
1 G02 O FL grid drive output.
2 G01 O FL grid drive output.
3 NC – Not used (OPEN).
4 CD SCOR I CD SCOR input.
5 T-COUNT I Tape rotation detect input.
6 P.DOWN IN (BACK UP) I Power ON detect input.
7 TAPE AMS IN I AMS signal input.
8 REMOTE IN I Remote control signal input.
9 FM STEREO IN I FM STEREO signal input.
10 RADIO SHFT CLK O Clock shift signal output.
11 LC72131 CE O Radio PLL IC chip enable output.
12 LC72131 CLK O Radio PLL IC clock output.
13 LC72131 DATA IN I Radio PLL IC data input.
14 LC72131 DATA OUT O Radio PLL IC data output.
15 CXD2589Q XRST O CD system reset output.
16 CXD2589Q XLAT O CD DSP IC command latch output.
17 CXD2589Q CLOCK O Clock output for CD DSP IC.
18 CXD2589Q DATA O CD DSP IC command data output.
19 CD OPEN SW IN I CD tray open switch input.
20 CD CLOSE SW IN I CD tray close switch input.
21 CXD2589Q SENS1 I CD SENS input.
22 BU1924F RCLK IN – Not used (OPEN).
23 BU1924F RADIO DATA IN – Not used (OPEN).
24 BU1924F QUARTY IN – Not used (OPEN).
25 CXD2589 SQCK O Clock output for CD SUB-Q.
26 CXD2589 SQSO I CD SUB-Q input.
27 CXD2589 SENS2 I CD SENS input.
28 AVREF I Reference voltage input (for A/D converter).
29-33 KEY1-5 I Key return signal input.
34 TAPE STATUS I Tape detection input.
35 TAPE MECHA MODE SW I FWD/REV detection input.
36 VER I Destination setting terminal (fixed at "H").
37 AVSS – Ground.
38 RESET I System reset input.
39 EXTAL I O System clock output (8MHz).
40 XTAL1 I System clock input (8MHz).
41 VSS – Ground.
42 XTAL 32.768kHz I Real clock input (32.768kHz).
43 XTAL 32.768kHz O Real clock output (32.768kHz).
44 VDD – Power supply terminal.
45 VFDP – FL power supply terminal.
46 IN I I Initial setting input.
47 CD OPEN OUT O CD tray open signal output.
48 CD CLOSE OUT O CD tray close signal output.
49 PD3 – Not used (OPEN).
50 PD4 – Not used (OPEN).
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Pin No. Pin name I/O Description
51 SYS MUTE O Mute signal output.
52 TUNER MUTE O Tuner mute signal output.
53 CD MUTE O CD mute signal output.
54 LINE MUTE O Line mute signal output.
55 TAPE REC MUTE O Tape mute signal output.
56 TAPE REC O Tape REC output.
57 TAPE BIAS O Tape REC bias select output.
58 TAPE SOL O Plunger control output.
59 TAPE MECHA VCC OUT O Tape mechanism B+ ON/OFF output.
60 ISS 1 O ISS 1 ON/OFF output.
61 ISS 2 O ISS 2 ON/OFF output.
62 MEGA BASS O Mega bass ON/OFF output.
63 POWER CONT OUT O Power ON/OFF output.
64 SUMMER LED – Not used. (OPEN)
65 SOUND LED O SOUND LED ON/OFF output.
66 DIMMER LED O DIMMER LED ON/OFF output.
67 BH3854 CK O Clock output for electrical volume IC.
68 BH3854 DATA O Data output for electrical volume IC.
69 BH3854 LACH O LACH output for electrical volume IC.
70 RESERVE – Not used (OPEN).
71-88 SEG 1-18 O FL segment drive output.
89 VDD – Power supply terminal.
90-100 G03-13 O FL grid drive output.
r Circuit Boards Location.
MAIN UNIT-1
DSP board
DISPLAY board
VOL board
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MAIN UNIT-2
CONTROL board
MOTOR board
R-CH SPEAKER UNIT
JACK board
AMP board
MAIN board
CPU board
TC RF board
HEAD RELAY board
ASP board
AMP IC board
POWER board
SPEAKER board
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