Diagrams; Ic Pin Description; Circuit Boards Location - Sony CFD-S38 Service Manual

6-1. IC PIN DESCRIPTION

• IC501 CXP83620-007Q (SYSTEM CONTROL)
Pin No. Pin Name I/O
1 C-SCOR I CD SCOR input
2 RMC I Sircs receiver input
3, 4 NC — Not used.
5 C-SENS1 I CD SENSE-1 input
6 C-SENS2 I CD SENSE-2 input
7 C-SQCK O CD Sub-Q read clock output
8 C-SQSO I CD Sub-Q data input
9 C-RST O CD reset output
10 C-CLOCK O CD serial clock output
11 C-LATCH O CD serial latch output
12 C-DATA O CD serial data output
13 REC I Tape record signal input L: REC
14 R-COUNT I Tuner PLL data input
15 R-DATA O Tuner PLL data output
16 R-CLOCK O Tuner PLL clock output
17 R-LATCH O Tuner PLL latch output
18 V-LATCH O Volume latch output
19 V-DATA O Volume data output
20 V-CLOCK O Volume clock output
21 P-CON O System power control output
22 DIRECTION — Not used.
23 – 25 KEY-1 – 3 I Key input
26 NC — Not used.
27 INIT O Initial set signal output
28 MODE CHECK I Mode set pin
29 SHIFT CLOCK O Shift clock output
30 RST I System reset input
31 EXTAL I Oscillation input (4.19 MHz)
32 XTAL O Oscillation output (4.19 MHz)
33 VSS — GND
34 VL O LCD drive port ON/OFF output
35 – 37 VLC-3 – 1 O LCD drive voltage terminal
38 – 41 COM0 – 3 O LCD drive common output
42 – 64 SEG0 – 22 O LCD drive segment output
65 NC — Not used.
66 A-MUTE O Audio mute output H: Mute
67 B-MUTE O Tuner block mute output H: Mute
68 C-MUTE O CD block mute output H: Mute
69 TAPE O Tape function output H: Tape
70 RADIO O Tuner function output H: Radio
71 CD O CD function output L: CD
72 VDD — Power supply pin (+5 V)
73 TX O Oscillation output (32.768 kHz)
74 TEX I Oscillation input (32.768 kHz)
75 NC — Not used.
76 ISS1 O Not used.
77 ISS2 O Not used.
78 C-DOOR I CD door open/close switch input L: Close
79 TC-PLAY I Tape play switch input L: Tape
80 REG CHK I Regulator check signal input H: ON
SECTION 6

DIAGRAMS

Pin Description
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6-2. CIRCUIT BOARDS LOCATION

PRIMARY board
SECONDARY board
HEADPHONE board
CONTROL board
BATTERY board
CD MOTOR board
BATTERY COMMON board
TUNER board
MAIN board
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