Sony CFD-CD777S Service Manual ▷ View online
• IC Block Diagrams
– AMP Board –
– AMP Board –
IC103
LA4620
– MAIN Board –
IC1
CXA1238S
PRE
DRIVER
POWER
AMP
RL SHORT
PROTECTOR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
23
21
20
19
18
17
22
VCC
DC
L IN+
IN–
IN–
GND
IN–
R IN+
STANDBY
VCC
MUTE
OUT
GND
OUT
IN–
OUT
GND
OUT
+
–
–
PRE
DRIVER
POWER
AMP
+
–
PRE
DRIVER
POWER
AMP
RL SHORT
PROTECTOR
THERMAL
PROTECTION
CIRCUIT
RIPPLE
FILTER
POP NOISE
PREVENTION
CIRCUIT
+
–
PRE
DRIVER
POWER
AMP
+
–
VCO
REGULATOR
FM FRONT-END
AM FRONT-END
MPX
REGULATOR
MONO/STEREO
SELECT
DECORD
AMP
MUTING
AUTO
BLEND
TUNING
INDICATOR
AM IF/
DET
FM IF/
DISCRI
RIPPLE
FILTER
BAND-PASS
MUTE
1
27
28
29
30
24
25
26
21
22
23
18
19
20
16
17
2
3
4
5
6
7
8
9
PLL LPF1
PILOT DET LPF2
PILOT DET LPF2
ST IND/VCO CHECK
L-CH OUT
VCC
R-CH OUT
RIPPLE FILTER
AGC AFC1
10
AGC AFC2
13
FM IF IN
14
AM IF IN
15
BAND SELECT
11
GND
12
TUNE IND
1/2
COUNTER
1/2
COUNTER
PD1
PD2
FM/AM FE OUT
FM GND
FM RF IN
AM RF IN
FM RF
REG
FM OSC
AFC
AM OSC
MUTE
FM DISCRI
GND
PLL LPF2
MPX REG
VCO
CONTROL
15dB
15dB
29dB
VOLUME
VOLUME
29dB
GRAPHIC
EQUALIZER
GRAPHIC
EQUALIZER
BIAS
1
21
22
18
19
20
16
17
2 3 4
5
6
7
8
9
400Hz
100Hz
BAL
VOL
IN 1
GND
DC1
OUT 1 (FIX)
LINE OUT 1
10
OUT 1 (VARIABLE)
11
ISET
VCC
15
LINE OUT 2
14
OUT 2 (FIX)
13
OUT 2 (VARIABLE)
12
VG
IN 2
DC2
DVCC
10kHz
4kHz
1kHz
+
–
+
–
–
+
–
–
+
–
+
–
1
27
28
29
30
24
25
26
21
22
23
18
19
20
16
17
2
3
4
5
6
7
8
9
A-L
TAPE-NF-L
TAPE-O-L
A-R
TAPE-O-R
MIC/HS
TAPE-NF-R
MIC-NF
MIC-IN
10
RADIO-IN-L
13
CD-IN-R
14
LINE-OUT-L
15
LINE-OUT-R
BIAS-IN
11
RADIO-IN-R
12
CD-IN-L
GND
VCC
BIAS
AGC
LPF-R
LPF-L
REC-NF-R
REC-NF-L
REC-EQ-R
REC-EQ-L
TR-B
32
B-L
31
B-R
TR-C
TAPE-MODE
FUNCTION
AGC
REC EQ
AMP
REC EQ
AMP
LOGIC
IC101
BA3426AS
IC102
CXA1352AS
– 53 –
– 54 –
– 55 –
IC701
CXA1782CQ
36
PHD2
PHD1
PHD
33
LD
32
RF M
31
RF O
30
RF I
29
CP
28
CB
27
CC1
26
CC2
25
FOK
24 SENS
23 C. OUT
22 XRST
21 DATA
20 XLT
19 CLK
18 VCC
17 ISET
16 SL 0
15 SL M
14 SL P
13
12
TA O
TA M
11
FSET
10
TG2
9
TGU
8
SRCH
7
FE M
6
FE O
5
FLB
4
FGD
3
FDFCT
2
FEI
1
FEO
48
VC
47
TDFCT
46
TZC
45
ATSC
44
TEI
43
LPFI
42
TEO
41
VEE
40
EI
39
E
38
F
37
FE BIAS
+
+
–
+
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
–
+
+
–
–
+
–
+
+
–
+
–
+
–
+
–
–
–
+
–
LEVELS
FOK
MIRR
DFCT
RF IV AMP2
RF IV AMP1
FE AMP
F IV AMP
E IV AMP
TE AMP
FZC COMP
BAL1
BAL2
BAL3
TOG1
TOG2
TOG3
TTL
IIL
IIL
TTL
TTL
IIL
• IIL DATA RESISTOR
• INPUT SHIFT RESISTOR
• ADDRESS DECODER
• OUTPUT DECODER
HPF COMP
LPF COMP
TZC COMP
DFCT
DFCT
TM1
FS4
ATSC
• WINDOW COMP
• FCS PHASE
COMPENSATION
COMPENSATION
• TRACKING
• PHASE
COMPENSATION
COMPENSATION
• ISET
FS1
FS2
TM4
TM5
TM6
TM3
TM7
TG2
• F SET
TG1
TM2
+
–
TOG1-3
FS1-4
TG1-2
TM1-7
PS1-4
BAL1-3
35
34
APC
– 56 –
IC702
CXD2507AQ
IC703
BA6898S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
52
53
54
55
56
57
58
59
60
61
62
63
64
19
FOK
MON
MDP
MDS
LOCK
TEST
FILO
FILI
PCO
VSS
AVSS
CLTV
AVDD
RF
BIAS
ASYI
ASYO
ASYE
WDCK
DATA
XRST
SENS
MUTE
SQCK
SQSO
EXCK
SBSO
SCOR
V
SS
WFCK
EMPH
DOUT
C4M
FSTT
XTSL
XTAO
XTAI
MNTO
SERVO AUTO
SEQUENCER
CPU
INTERFACE
DIGITAL
CLV
SUB CODE
PROCESSOR
EFM
DEMODULATOR
DIGITAL
PLL
ASYMMETRY
CORRECTOR
D/A
INTERFACE
ERROR
CORRECTOR
16K
RAM
DIGITAL
OUT
CLOCK
GENERATOR
LRCK
PCMD
BCLK
GTOP
XUGF
XPCK
V
DD
GFS
RFCK
CZPO
XROF
MNT3
MNT1
XLON
SPOD
SPOC
SPOB
SPOA
CLKO
V
DD
XLTO
DATO
CNIN
SEIN
CLOK
XLAT
3
5
14
4
5
3
6
REGULATOR
BIAS
DRIVER
MUTE
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
1
21
22
18
19
20
17
2
3
4
5
6
7
8
9
NC
VCC
BIAS IN
VIN1’
VO1 (+)
VO1 (–)
VIN1
VO2 (–)
GND
10
VO2 (+)
11
VIN2’
12
RESET
13
REG-B
14
REG OUT
15
MUTE
16
FIN
REGULATOR
BIAS, T.S.D.
MONITOR
NC
GND
VIN3’
VIN3
VO3 (+)
VO3 (–)
29
VIN4
28
VO4 (+)
27
VO4 (–)
26
NC
25
OP IN (–)
24
OP OUT
23
GND
30
VIN4+’
31
VCC
32
FIN
+
–
+
–
–
+
–
+
–
+
–
+
–
+
–
– 57 –
ATTENUATION COUNTER
FILTER PROCESSOR &
ATTENUATION PROCESSOR
NOISE SHAPER
PROCESSOR BLOCK
INPUT INTERFACE
PWN DATA
PRODUCE
BLOCK
TIMING
CONTROL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
MUTE
DEEN
CKO
DVSS
BCKI
DI
DVDD
LRCI
TSTN
TO1
AVDDL
LO
AVSS
RO
AVDDR
MUTE
XVDD
XTI
XTO
XVSS
DS
RSTN
MODE
ATCK
L
L
L
R
R
R
IC704
IC SM5877AM-G
– CONTROL Board –
IC104, 204
KIA6966S
REFERENCE
VOLTAGE
1
2
3
4
5
6
7
8 9
OUT1
OUT2
OUT3
OUT4
OUT5
VD
GND
IN
VCC
+
–
–
+
–
–
+
–
+
–
–
+
–
–
+
–
–
Ver. 1.3
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