Diagrams; Ic Pin Description; Circuit Boards Location - Sony CFD-S22 Service Manual

6-1. IC PIN DESCRIPTION

• IC501 CXP83620-022Q (SYSTEM CONTROL)
Pin No. Pin Name I/O
1 C-SCOR I CD SCOR input
2 RMC I Sircs receiver input
3 MUTE O MUTE output
4 ADJ O F TEX frequency division output
5 C-SCLK O CD SENSE read clock output
6 C-SENS I CD SENSE input
7 C-SQCK O CD Sub-Q read clock output
8 C-SQSO I CD Sub-Q data input
9 C-XRST O CD system reset output
10 C-CLOCK O CD system clock output
11 C-LATCH O CD system latch output
12 C-DATA O CD command data output
13 C-AGCCONT O CD AGC control output
14 R-COUNT I Tuner PLL data input
15 R-CLOCK O Tuner PLL clock output
16 R-DATA O Tuner PLL data 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 REG CHK I Regulator check signal input
23 REC I Tape record signal input H: REC
24 SDA I/O EEPROM input/output
25 – 28 KEY-1 – 4 I Key input
29 MODE CHECK I Mode set input
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 VLC3 – 1 O LCD drive voltage output
38 – 41 COM0 – 3 O LCD drive common output
42 – 58 SEG0 – 16 O LCD drive segment output
59 SEG17 O LCD drive segment output
60, 61 NC — Not used. (Open)
62 INIT O Initial set signal output
63 TONE O TONE control output
64 MEGA BASS O MEGA BASS control output
65 BT-CHK I Battery check input
66 MT-CONT I MT control input
67 ISS1 O ISS1 output
68 ISS2 O ISS2 output
69 TAPE O Tape function output H: Tape
70 RADIO O Tuner function output H: Radio
71 CD O CD function output H: CD
72 VDD — Power supply pin (+3.3 V)
73 TX O Oscillation output (150 kHz)
74 TEX I Oscillation input (150 kHz)
SECTION 6

DIAGRAMS

Pin Description
H: Mute
Not used. (Open)
H: PCON
Not used. (Open)
L: TONE
H: MEGA BASS
H: BT-CHK
H: MT-CONT
H: ISS1 Not used. (Open)
H: ISS2 Not used. (Open)
– 17 –
Pin No. Pin Name I/O
75 NC — Not used. (Open)
76 A-MUTE O Audio mute output H: Mute
77 SCL O EEPROM clock output
78 EC I Event counter input
79 TC-PLAY I Tape play switch input L: Tape
80 C-DOOR I CD door open/close switch input L: Close

6-2. CIRCUIT BOARDS LOCATION

SECONDARY board
POWER board
CONTROL board
LCD board
Pin Description
BATTERY board
TC board
MAIN board
CD board
HALF BATTERY board
TUNER board
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