Sony CDX-CA750 / CDX-CA750X / CDX-CA760X Service Manual ▷ View online
41
41
CDX-CA750/CA750X/CA760X
(Page 39)
Note:
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
no mark : FM
3-17. SCHEMATIC DIAGRAM — KEY SECTION — • Refer to page 43 for IC Block Diagrams.
42
42
CDX-CA750/CA750X/CA760X
IC7 LA6556L-TE-L
IC1 CXA2596M
• IC BLOCK DIAGRAMS
IC201 SAA6588T
IC601 BA8270F
1
36
FWD
2
REV
3
VCC2
4
VL0–
5
VL0+
6
VO4+
7
VO4–
8
VO3+
9
VO3–
S-GND
35 MUTE2
34 MUTE1
33 VIN4
31 VIN4+
30 VREF-IN
29 VIN1 (VREF)-SW
28 VREF-OUT (CH1)
10
VO2+
27 REG-OUT
11
VO2–
26 REG-IN
12
VO1+
13
VO1–
14
VCC1
15
VIN1
16
VIN1–A
17
VIN1+A
18
VIN1–B
25 VIN3+
24 VIN3–
23 VIN3
32 VIN4–
INPUT
OUTPUT
CONTROL
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
+
–
+
–
–
+
–
–
+
–
+
–
+
–
+
–
+
–
AMP-A
AMP-B
VIN1/VREF SW
MUTE1
MUTE2
CH2-CH4 OUTPUT
ON/OFF
CH1 OUTPUT
ON/OFF
GND
5V REG
+
–
–
+
–
22 VIN2+
21 VIN2–
20 VIN2
19 VIN1 +B
+
–
–
+
–
1
2
3
4
5
5
6
7
8
9
10
14
13
12
11
BUS ON
SWITCH
RESET
SWITCH
BATTERY
SWITCH
BUS ON
RST
BATT
CLK
VREF
DATA
GND
VCC
RST
BUS ON
BUS ON
CLK IN
BU IN
DATA IN
DATA OUT
1
24
HOLD
2
AGCVTH
3
LD
4
PD
5
A
6
B
7
C
8
D
9
VEE
VEE
VCC
APC PD AMP
+
–
–
+
–
–
+
–
–
+
–
–
VEE
VREF
1.25V
VCC
APC LD AMP
+
–
VC
VC
VCC
VCC
23 LC/PD
22 LD ON
21 HOLD SW
19 RF BOT
18 RFTC
17 RF I
16 RFO
10
F
15 RFE
11
E
14 FE
12
VC
13 TE
20 AGCCONT
+
–
–
+
–
–
+
–
–
+
–
–
VC
VEE
+
–
–
VC
VC
VC
VC
VC
VC
VC
+
–
–
+
–
–
+
–
–
+
–
+
–
–
VC
+
–
RF SUMMING AMP
RF EQ AMP
TRACKING
ERROR AMP
VEE
ERROR AMP
FOCUS
VC BUFFER
VCC
VEE
SCOUT
MRO
MPTH
TCON
OSCO
OSCI
VSSD
VDDD
DAVN
SDA
VREF
MPX
VSSA
VDDA
AFIN
MAD
PSWN
SCL
2
1
6
15
11
13
16
14
12
INTERFACE
REGISTER
SIGNAL QUALITY
DECODER
CLOCKED
COMPARATOR
POWER SUPPLY
& RESET
TEST
CONTROL
OSCILLATOR
& CLOCK
PAUSE
DETECTOR
MULTI
PATH
DETECTOR
57kHz
8th ORDER
BAND-PASS FILTER
RDS/RDBS
DECODER
RDS/RDBS
DEMODULATOR
IIC BUS SLAVE
TRANSCEIVER
17
18
CIN
19
LVIN
20
8
7
DATA
CLOCK
DATA
CLOCK
4
4
5
9
10
3
4
5
43
CDX-CA750/CA750X/CA760X
IC301 TDA7406T
33
34
35
36
37
38
39
40
41
42
43
44
1 2 3 4 5
6 7 8
9
10
11
28 27
30 29
32 31
SOFT STEP
FADER
SOFT STEP
FADER
SOFT STEP
FADER
SUB
WOOFER
FILTER
MONO
FADER
MIXER
OUTPUT SELECTOR
HIGH PASS
SOFT STEP
VOLUME
7BAND
EQUALIZER
SOFT MUTE
BEEP
PAUSE
PLL
PIL, DET
LOUDNESS
SPECTRUM
ANALIZER
IN GAIN
+ AUTO
ZERO
MAIN SOURCE
SELECTOR
MIXING
SELECTOR
II
C-BUS
DIGITAL
CONTROL
DEMODULATOR
+STEREO ADJUST
+STEREO BLEND
PILOT
CANCELLATION
MULTI
PATH
DETECTOR
AM/FM
NOISE
BLANKER
PULSE
FORMER
SUPPLY
25kHz
LP
86kHz
LP
STD
IN GAIN
S & H
HIGH OUT
QUAL.
A/D
12
13
14
15
16
18
19
22
21
20
INPUT MULTIPLEXER
TAPE R
FDR+
FDL–
FDL+
PAUSE
PHONE
TIM
NAVI
AM/MPX2
AMIF
CMPX
TAPEL
MDL
MDR
CDL
CDR
CREF
AC OUTL
SWACOUT
ACOUTR
ACINR
SWIN
ACINL
MIXINFL
MIXINRL
MIXINRR
MIXINFR
OUTFL
OUTRL
OUTFR
OUTRR
OUTSW
SAOUT
26 25
24
23
AUX1
LEVEL
MP IN
MP OUT
QUAL
17 ATT
GND
SDA
SCL
SACLK
VDD
CREF
44
CDX-CA750/CA750X/CA760X
IC302, 303 NJM2160AV
1
VREF
VREF
16
15
14
13
12
11
10
9
2
3
4
5
6
7
8
VCC
INFL/R
SVRFL/R
INMFL/R
INMRL/R
SVRRL/R
INRR/L
VCC
CFL/R+
CFL/R-
GNDFL/R
OUTFL/R
OUTRL/R
CRL/R-
CRL/R+
GNDRL/R
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