Sony XR-CA670X Service Manual page 22

XR-CA670X
• IC Block Diagrams
– MAIN Board –
IC51 SAA6588T/V2-518
20 19 18 17 16 15 14
POWER SUPPLY
& RESET
MULTI
PATH
57kHz
DETECTOR
8th ORDER
BAND-PASS FILTER
CLOCKED SIGNAL QUALITY
COMPARATOR DECODER
4 5
4
CLOCK CLOCK
RDS/RDBS RDS/RDBS INTERFACE
DATA
DEMODULATOR DECODER REGISTER
DATA
TEST OSCILLATOR IIC BUS SLAVE
CONTROL & CLOCK TRANSCEIVER
1 2 3 4 5 6 7 8
IC351 LB1930M-TLM
VCC 1 10 NC
NC 2 BUFFER
IN1 3 9 OUT1
MOTOR
CONTROL
DRIVE 8 NC
CIRCUIT
CIRCUIT
IN2 4 7 OUT2
BUFFER
S-GND 5 6 P-GND
IC301 HA12231FP
13 12 11
20 19 18 17 16
PAUSE
DETECTOR
INPUT
AMP
INPUT
AMP
1 2 3 4 5
9 10
IC401 BD3802F-FE2
OUT- OUT-
D-GND SDA SCL MUTE SEL ADJ VCC FR RR
28 27 26 25 24 23 22 21 20
VCC
FADER FADER
2 (0 to –58, (0 to –58,
I C BUS
VCO
–∞ dB) –∞ dB)
LOGIC
ON OFF ON
EFFECT (OFF,6dB, EFFECT (OFF,6dB,
10dB,14dB) 10dB,14dB)
TONE TONE
PASS PASS
BASS,TREBLE, MIDDLE
(–15dB to +15dB, 1dB STEP)
VOLUME
(+23 to –79dB, –∞ dB
1dB STEP)
INPUT GAIN
(0 to 15dB,1dB STEP)
MUTE
INPUT SELECTOR
(4 STEREO INCLUDE 1 ISOLATION INPUT)
VCC/2
1 2 3 4 5 6 7 8
A-GND FIL BUS- AN BUS- TU- TU- CD-
RCH LCH RCH LCH RCH
IC581 BA8270F-E2
BUS ON
1
15 14 13 12 11
RST 2
MS
BATT 3
CLK 4
VREF 5
LOW PASS MA
DATA 6
FILTER
RECT
GND 7
6 7 8 9 10
OUT- OUT-
FL RL DS32 DS22 DS12
19 18 17 16 15
FADER FADER
(0 to –58, (0 to –58,
–∞ dB) –∞ dB)
OFF
BASS,TREBLE, MIDDLE
(–15dB to +15dB, 1dB STEP)
VOLUME
(+23 to –79dB, –∞ dB
1dB STEP)
INPUT GAIN
(0 to 15dB,1dB STEP)
MUTE
9 10 11 12 13 14
CD- D1 D2 DS11 DS21 DS31
LCH
22 22
IC751 TDA8588J/N1/M5
TAB 1
BUS ON 14 VCC
SWITCH
OUT-FL-
3
RESET
13 RST
SWITCH
12 BUS ON
11 CLK IN OUT-FL+ 5
BATTERY
10 BU IN
SWITCH
OUT-RL- 7
OUT-RL+ 9
9 DATA IN
IN-RL
11
8 DATA OUT
S-GND
13
PROTECTION/
DIAGNOSTIC
IN-RR 15
OUT-RR+ 17
OUT-RR- 19
OUT-FR+
21
OUT-FR- 23
CHIP DETECT/
DIAGNOSTIC
DIAG 25
DETECTION
SWITCH
ANT-REM 27
AMP-REM 29 SWITCH
TU5V 31
TAPE8.5V 33
VP 35
REFERENCE
VOLTAGE
B.UP+B 37 REGULATOR
2 SDA
2
I C BUS
4
SCL
FL
6
VP2
RL 8
PGND3
10 SVR
12 IN-FL
14 IN-FR
16
BEEP
VP
RR 18 PGND2
20 VP1
STANDBY/
FR 22 STB
MUTE
24 PGND1
BATTERY TEMPERATURE
PROTECTION ENABLE
LOGIC
26 RST
28 CRES
30 AUDIO8.3V
32 GND
34
PANEL+B
36
CBU
LOADDUMP BACK-UP
PROTECTION SWITCH