SONY CFDS550
Instrukcja Serwisowa

CFD-S550

IC803 CAT24WC02JI-1.8-TE13 (MAIN Board)

A0

1 7BIT ADDRESS DECODER

1K BIT EEPROM ARRAY 8 VCC 8BIT SLAVE � WORD ADDRESS REGISTER DATA REGISTER 7

A1

2

7BIT

WP

DET

START

STOP 6 SCL

A2

3

ON ALC2 ALC1

CONTROL CIRCUIT

MUTE SEL2

ACK

SEL1 TAPE TAPE

GND

4

HIGH VOLTAGE OCCURENCE CIRCUIT

POWER SUPPLY VOLTAGE DETECTION

5 SDA

IC303 BD3870FS (MAIN Board)
BOUT2 BOUT1 OUT1 BNF2 TNF2 VCC C2

24

23

22

21

20

19

BNF1

18

17

16

15

14

13

TREBLE1 f0=8kHz

TREBLE2 f0=8kHz

BASS2 f0=80Hz

BASS1 f0=80Hz

LOGIC

OUT2

SC
VCC/2 VCC/2 11 12

VCC/2

VCC/2

VCC/2

SI

1

2

3

4

5

6

7

8

9

10

VIN1 SURROUND CAP

VIN2 TNF1

FILTER

IC301 TA2068N (TC Board)
AGC 1 L.PO 2 L.NF 3 REC AMP1 L.RO 4 L.IN 5 REF 6 REF AMP GND 7 R.IN 8 R.RO 9 26dB R.NF 10 NAB AMP2 MIC AMP1 MIC.NF 12 BUF AMP A2 13 MIC LINE TAPE RADIO 16 R.LINE 15 TAPE 14 R.RAD 2.1 REC AMP2 26dB BUF AMP MUTE MONITOR AMP B1 ON ON BUF AMP B2 MUTE 7dB 7dB MONITOR AMP 17 LINE LOGIC 19 VCC 18 R.LO NAB AMP1 LINE

24 L.RAD 23 MIC I/EX

BUF AMP A1

TAPE RADIO

22 L.LINE 21 REC

20 L.LO

R.PO 11

GND

A1

A2

B1

B2

C1

35