Sony CDX-M620 Service Manual page 54

CDX-M620/M670
• IC BLOCK DIAGRAMS
IC1 CXA2596M
APC PD AMP
+
HOLD
1
–
VCC
VEE +
–
AGCVTH
2
VEE +
+
– APC LD AMP
–
LD 3
VC VCC
PD 4
–
+
+
–
A 5
+
+
–
–
B 6
+
–
VEE
C
7
VC + VC +
– –
D
8
RF SUMMING AMP RF EQ AMP
VC
VEE VEE ERROR AMP
9
VC
FOCUS
+
–
+
VC
–
F 10
E 11 –
+
VC
VC
VC BUFFER
VC 12 VCC
+
VEE
–
VC
IC202 SAA6588T-V2-118
20 19 18 17 16 15
POWER SUPPLY
MULTI & RESET
PATH
57kHz
DETECTOR
8th ORDER
BAND-PASS FILTER
CLOCKED SIGNAL QUALITY
COMPARATOR DECODER
4 5
4
CLOCK
RDS/RDBS RDS/RDBS INTERFACE
DEMODULATOR DECODER REGISTER
DATA
TEST OSCILLATOR
CONTROL & CLOCK
1 2 3 4 5 6 7 8
IC7 LA6576L-TE-L
FWD 1
VCC VCC
24
INPUT
REV 2
23 LC/PD
VCC2
3
22 LD ON
VL0– 4
21 HOLD SW VL0+ 5
VO4+
6
20 AGCCONT
VO4– 7
19 RF BOT
VC
VO3+ 8
VO3–
18 RFTC 9
17 RF I
VO2+ 10
16 RFO
VO2– 11
15 RFE
VO1+
12
14 FE
VO1– 13
–
+
VCC1
13 TE 14
TRACKING
ERROR AMP
VC
VIN1 15
VIN1–A 16
AMP-A
–
VIN1+A +
17
14 13 12 11
VIN1–B 18
–
+
PAUSE AMP-B
DETECTOR
CLOCK
DATA
IIC BUS SLAVE
TRANSCEIVER
9 10
GND
36 S-GND
CH2-CH4 OUTPUT
35 MUTE2
MUTE2
ON/OFF
CH1 OUTPUT
34 MUTE1
MUTE1
ON/OFF
33 VIN4
OUTPUT
CONTROL
32 VIN4–
+
–
–
+
31 VIN4+
LEVEL
SHIFT
–
+ 30 VREF-IN
29 VIN1-SW
VIN1/VREF SW
LEVEL
SHIFT
28 VREF-OUT
IC101 TL1451ACDB-E20
–
+
5V REG
+
–
VERF.
27 REG-OUT
+2.5V
LEVEL
SHIFT
REFERENCE
26 REG-IN
25 VIN3+
+
LEVEL
PROTECTION
–
–
SHIFT
COMPARATOR
+
24 VIN3–
23 VIN3
22 VIN2+
–
+
+
–
–
+
1
21 VIN2–
20 VIN2
19 VIN1 +B
54 54
IC306 TC7660SE0A713
RC RC
1 +2
BOOST
OSCILLATOR OSCILLATOR
INTERNAL
VOLTAGE
REGULATOR
2
CAP+
GND 3
4
CAP–
16 15 14 13 12 11 10 9
VCC
–
+
VOLTAGE ERROR PWM
AMP2 COMPA-
RATOR2
+2.5V
VERF
OUTPUT2
SHORT
CIRCUIT
VERF
VERF
+
OUTPUT1
+
– S R R
LATCH U.V.L.O
VREF/2
PWM
COMPA-
RATOR1
+
TRIANGLE
–
OSCILLATOR
ERROR
GND
AMP1
2 3 4 5 6 7 8
IC651 BA6288FS-E2
GND 1 16 RNF
NC 2 DRIVER 15 NC
DRIVER
OUT1 3 14 OUT2
M BATT 4 13 NC
POWER
VCC 5 12 VREF
SAVE
CLOSE 6 11 OPEN
NC 7 10 NC
NC 8 TSD 9 NC
8 V+
7 OSC
6 LV
5 VOUT
LOGIC
NETWORK
IC601 BA8270F-E2
BUS ON VCC
14
BUS ON
1
SWITCH
RESET
RST 2 13 RESET
SWITCH
12 BUS ON
11 CLK IN
BATTERY
BATT 3 10 BU IN
SWITCH
CLK 4
VREF 5
6 9 DATA IN
DATA
GND 7 8 DATA OUT
IC102 RN5VD53AA-TL
5 4
RESET
1 2 3