Sony CX-LFAV500 / XR-FAV500 Service Manual ▷ View online
37
37
CX-LFAV500
7-18. SCHEMATIC DIAGRAM – POWER SECTION –
*
*
Not replaceable :
Built in transformer
AC IN
AC VOLTAGE
120V
220V
230V - 240V
C801
CN202
D801
D803
D806
D808
PR801
PR802
PT801
CN801
PT802
RY801
S801
CN802
1000
25V
2P
1SS133T-72
1SS133T-72
1SS133T-72
1SS133T-72
POWER TRANSFORMER (MAIN)
SUB POWER TRANSFORMER
(TH)
(SP,MY)
(TH)
PT BOARD
TO
MAIN
BOARD
CN401
(Page 29)
I
TO
HP/MIC JACK
BOARD
W781
(Page 35)
K
38
38
CX-LFAV500
• IC Block Diagrams
IC101
CXD3068Q
IC102
AN41020A
– BD Board –
IC103
CXA2647N-T4
1
67
68
65
66
63
64
61
62
75
76
73
74
79
80
77
78
71
72
69
70
34
33
36
35
38
37
40
39
26
25
28
27
22
21
24
23
30
29
32
31
2
3
4 5 6 7
8 9
10 11 12 13
14 15 16 17
18
19 20
60 59 58
57
56
55 54 53 52
51
50 49 48
47
46 45 44 43 42 41
DVDD0
XRST
D
ATA
XLA
T
CLOK
SENS
WFCK
XUGF (RFCK)
XPCK
GFS
C2PO
SCOR
C4N
WDCK
XTSL
EMPH
DVSS2
DVDD2
ASYE
MD2
DOUT
XTAI
LRCK
PCMD
BCLK
XTAO
SOUT
SOCK
XOLT
SQCK
SCSY
SBSO
EXCK
SQSO
COUT
MIRR
DVSS
SCLK
A
TSK
MUTE
ADIO
A
VSS0
IGEN
A
VDD0
A
VSS1
A
VDD1
BIAS
RFDC
CE
TE
PCO
FILI
FILO
CL
TV
RF
AC
ASYI
ASYO
VPCO
V16M
VCTL
MDP
SSTP
FSTO
DVDD1
SFDR
SRDR
TFDR
TRDR
FFDR
FRDR
DVSS1
TEST
TES1
VC
FE
SE
LOCK
PWMI
FOK
DFCT
INTERFACE
SERVO
MIRR
DFCT
FOK
SERVO
FOCUS
SERVO DSP
SERVO
SERVO
SLED
TRACKING
FOCUS PWM
GENERATOR
GENERATOR
GENERATOR
GENERATOR
SLED PWM
TRACKING PWM
A/D
CONVERTER
OPAMP
ANALOG SW
PWM GENERATOR
SERVO BLOCK
CLOCK
GENERATOR
ASYMMETRY
CORRECTOR
CORRECTOR
DIGITAL
PLL
CPU
INTERFACE
INTERFACE
CORRECTOR
PROCESSOR
SUB CODE
RAM
32K
DEMODURATOR
EFM
ERROR
D/A
DIGITAL
OUT
INTERFACE
SERVO
AUTO
DIGITAL
CLV
1
2
3
4
5
6
7
9
8
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
16
17
18
19
20
15
14
13
12
11
10
PGND1
PGND1
DIRECTION
DETECTION
DIRECTION
DETECTION
RESET CIRCUIT
.STANDBY
.BAND-GAP
.SVCC
DIRECTION
DETECTION
DIRECTION
DETECTION
PVCC/2
PVCC/2
PVCC/2
PVCC1
PVCC1
VO2+
VO1+
VO1-
IN1+
IN1-
OPO1
OPO2
SGND
IN2+
IN2-
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
VO2-
PGND2
PGND2
ST
ANDBY
PVCC2
PVCC2
VO3-
VO4-
VO4+
VREF
IN4
IN4R
IN3+
SVCC
OPO3
IN3-
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
VO3+
ROM/RW
ROM/RW
RF OFF AT VCC
VOFST
VOFST
DVC
VC
VC
VC
ROM/RW
VC
VC
30
29
28
+
–
+
–
VC
VCC
DVC
27
26
25
24
ROM/RW
EQ
23
22
21
20
19
RFAC
VCA
VCC
+
–
DVC
+
–
+
–
ROM/RW
VC
ROM/RW
DVC
+
–
–
3
A
B
C
D
B
C
C
A
A
A
B
C
C
D
B
C D
D
+
–
1
2
APC AMP
5
6
7
8
9
4
RFAC
SUMMING
AMP
ROM/RW
DVC OR Hi-Z
SLEEP, APC OFF
VOFST
VC
ROM/RW
+
–
10
18
17
16
B
D
A
C
13
14
15
12
EQ IN
LD
PD
GND
A
B
C
D
AC SUM
E
DVCC
DVC
RFAC
SW
DC OFST
RFDCI
RFDC
VC
RFC
VFC
BST
RFG
VCC
CEI
CE
TE BAL
TE
FEI
FE
VC
+
–
VC
+
–
11
GM
F
GM
ROM/RW
(L/H)
VOFST
39
CX-LFAV500
IC805
BH2220FVM-TR
– VCD Board –
REC-O_L
REC-O_R
TUNER-R
TUNER-L
CD-L
A
UX-L
OUT
-L
OUT
-R
T
ON_L-L
T
ON_L-R
A
UX-R
CD-R
VSS
T
ON_H-R
T
ON_H-L
T
APE-L
T
APE-R
IC301
BD3881FV
– MAIN Board –
R-2R
DAC
8bit REG
+
DEC
R-2R
DAC
8bit REG
+
DEC
SERIAL
INTERFACE
R-2R
DAC
8bit REG
+
DEC
POWER ON
RESET
1
AO1
2
AO2
7
CLK
3
AO3
4
VCC
8
LD
6
DI
5
GND
40
CX-LFAV500
IC502
BU9262AFS
– FRONT Board –
1
2
3
4
5
6
7
8
9
CONTROL LOGIC
TSD
VREF
OUT2
OUT1
RNF
VM
VCC
FIN
GND
RIN
IC604
BA6956AN
1
N. C.
2
TESTB
3
SCK
4
SLT
5
SI
6
CLKO
7
CLKI
8
N. C.
9
DSOUT
10
TESTOUT
11
LPF1I1
12
LPF1I2
13
LPF1O
14
ADI
15
ADO
16
GND
32 MIXIN
31 MICIN
30 VDD
29 LCIN
28 RCIN
27 FBOUT
26 LCOUT
25 RCOUT
24 VREF
23 DSIG
22 VOIN
21 LPF2O
20 LPF2I2
19 LPF2I1
18 DAO
17 DAI
SERIAL
CONTROL
CIRCUIOT
CIRCUIOT
CLOCK
A/D
CONVERETR
LOW-PASS
FILTER
INPUT
MIX
SELECTOR
DLYVOL
MIX OUT
REFERENCE
RESET
FBVOL
LOW-PASS
FILTER
D/A
CONVERETR
PROCESSOR
RAM
TEST OUT
CONTROL
LOGIC INPUT
– MIC/ECHO Board –
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