Sony CDX-L495EE Service Manual ▷ View online
25
25
CDX-L495EE
3-12. SCHEMATIC DIAGRAM — KEY SECTION — • Refer to page 18 for Common Note on Schematic Diagram.
Note:
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
no mark : FM
(Page 23)
R901
R902
R903
R911
R912
R913
R991
R981
R982
R983
R984
R985
R986
D901
R972
CN901
R971
R996
R994
R995
R909
R908
R907
R906
R905
R904
R914
R915
R916
R917
R918
R921
R920
R919
R987
R988
R989
R931
R932
R933
R941
R942
LSW911(2/2)
LSW910(2/2)
R946
LSW913(2/2)
LSW914(2/2)
LSW915(2/2)
LSW916(2/2)
LSW920(2/2)
LSW919(2/2)
LSW918(2/2)
LSW917(2/2)
LSW907(2/2)
LSW908(2/2)
LSW909(2/2)
LSW921(2/2)
R963
R964
R965
LSW904(2/2)
R966
LSW905(2/2)
R943
C991
C992
C993
C994
C995
C971
R993
R992
S900
S901
S902
S903
LSW905(1/2)
S906
LSW907(1/2)
LSW908(1/2)
LSW909(1/2)
LSW910(1/2)
LSW911(1/2)
S912
LSW913(1/2)
LSW914(1/2)
LSW915(1/2)
LSW916(1/2)
LSW917(1/2)
LSW918(1/2)
LSW919(1/2)
LSW920(1/2)
LSW921(1/2)
LSW904(1/2)
IC971
D991
D902
LED931
LED932
LCD901
IC901
LED900
LED912
R944
LED901
R945
LED951
R951
R952
R954
R955
R956
R957
R961
LED902
LED906
R962
LED952
LED903
26
26
CDX-L495EE
76
75
AGCI
AGCO
74
RFI
73
C3T
72
ASY
71
EFM
70
AVDD
69
7E DAC3
68
7D DAC2
67
7C DAC1
66
7F DAC0
65
MD
64
SD
63
TD
62
FD
60
ATEST
59
TEST1
58
TEST0
57
DGND
56
TSTB
55
TSCK
54
TSI
53
TSO
52
PACK
51
DVDD
61
AGND
1
DGND
2
RFOK
3
RST
4
A0
5
STB
6
SCK
7
SO
8
SI
9
XTALEN
10
DVDD
11
DAVDD
12
ROUT
13
DAGND
REGC
16
LOUT
17
DAVDD
18
R+
19
R–
20
L+
21
L–
22
XVDD
23
XTAL
24
XTAL
25
XGND
15
14
DAGND
77
RFO
78
EQ2
79
EQ1
80
RF-
81
AGND
82
A
83
C
84
B
85
D
86
F
87
E
88
AVDD
89
REFOUT
90
FE-
91
FEO
92
TE-
93
TEO
94
TE2
95
AGND
TEC
96
PD 97
98
LD
PN 99
100
AVDD
50 C2D3
49 C2D2
48 C2D1
47 C1D2
46 C1D1
45 DGND
44 PLCK
43 MIRR/WFCK
42 RFCK
41 LOCK
40 DVDD
39 TSOI
38 C16M
37 DGND
36 TX
35 HOLD/WDCK
34 LRCK
33 LRCKIN
32 SCKO
31 SCKIN
30 DOUT
29
28
DIN
FLAG
27 EMPH
26 DVDD
EFM
COMPARATOR
EFM
EFM
DEFECT
FOK
A3T
MIRR
FEO
TEO
TEOFS
FEOFS
RF
AMP BLOCK
SWITCH
MICROCOMPUTER INTERFACE
SCF
OSC
FOCUS
REGISTER
TRACKING
REGISTER
OCTUPLED
OVERSAMPLING DIGITAL FILTER
NOISE SHAVER
OUTPUT BUFFER
NOISE SHAVER
OUTPUT BUFFER
DE-EMPHASIS CIRCUIT
D/A
INTERFACE
CIRCUIT
OUTPUT PROCESSOR
DIGITAL
AUDIO
INTERFACE
DIGITAL PLL
TIMING GENERATOR
EFM DEMODULATOR
ERROR
CORRECTION
PROCESSOR
MICROCOMPUTER INTERFACE
CD-TEXT DECODER
SUB-CODE PROCESSOR
16K
SRAM
D/A
AUTO GAIN
CONTROLLER
FD/TD/SD/MD
CONTROLLER
CONTROLLER
ADDER
SVDRAM
MULTIPLIER
SVCRAM
SVROM
ROM
DECODER
CLV
PROCESSOR
DEFECT
COMPARATOR
RFENV
MIRENV
A/D CONVERTER
MEMORY
PROCESSOR
COMPARATOR
IC1 µPD63711GC-8EU
3-13. IC BLOCK DIAGRAMS
IC2 BA5810FP-E2
1
FWD
+
–
+
–
+
–
2
REV
LOADING PRE
FWD REV
3
LDCONT
6
IN2
7
PREVCC
8
POWVCC
VOL–
VOL+
IN1
4
PS
+
–
LEVEL
SHIFT
+
–
+
–
LEVEL
SHIFT
LEVEL
SHIFT
+
–
POWER
SAVE
CH1-4
MUTE
X3
9
10
11
VO2–
12
VO2+
13
VO1–
14
VO1+
5
BIAS
OPIN4+
OPIN4–
OPIN3–
OPOUT3
MUTE
POWVCC
GND
OPIN3+
OPOUT4
VO3–
VO3+
VO4–
VO4+
7.5k
7.5k
16k
16k
7.5k
7.5k
16k
16k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
+
–
+
–
+
–
LEVEL
SHIFT
+
–
+
–
+
–
10k
10k
10k
10k
+
–
28
27
26
23
22
21
25
20
19
18
17
16
15
24
POWVCC34
(CH3,CH4)
PREVCC
(PRE.LOADING)
POWVCC12
(CH1.CH2)
27
CDX-L495EE
IC401 BD3803F-FE2
22
21
20
19
18
17
16
15
14
13
12
I
2
C BUS
LOGIC
VCO
FADER
(0~-58,
-∞dB)
FADER
(0~-58,
-∞dB)
FADER
(0~-58,
-∞dB)
FADER
(0~-58,
-∞dB)
BASS,TREBLE, MIDDLE
(-15dB~+15dB,1dB STEP)
BASS,TREBLE, MIDDLE
(-15dB~+15dB,1dB STEP)
VOLUME
(+23~-79dB,-∞dB
1dB STEP)
VOLUME
(+23~-79dB,-∞dB
1dB STEP)
INPUT GAIN
(0~15dB,1dB STEP)
INPUT SELECTOR
(4 STEREO INCLUDE 1 ISOLATION INPUT)
INPUT GAIN
(0~15dB,1dB STEP)
MUTE
MUTE
6
7
8
9
10
11
3
4
5
2
1
D-GND
A-GND
FIL
BUS-
RCH
AN
BUS-
LCH
TU-
RCH
TU-
LCH
CD-
RCH
CD-
LCH
D1
D2
SDA
SCL
MUTE
SEL
ADJ
VCC
OUT-
FR
OUT-
RR
OUT-
FL
OUT-
RL
VCC
VCC/2
TONE
PASS
PASS
TONE
PASS
PASS
28
CDX-L495EE
IC750 TDA8589J/N1
MUTE
MUTE
ENABLE
LOGIC
STANDBY/
MUTE
BATTERY
DETECTION
CHIP DETECT/
DIAGNOSTIC
PROTECTION/
DIAGNOSTIC
SWITCH
REGULATOR
SWITCH
REFERENCE
VOLTAGE
LOADDUMP
PROTECTION
TEMPERATURE
PROTECTION
BACK-UP
SWITCH
REGULATOR
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
TAB
OUT-FL-
OUT-FL+
OUT-RL-
OUT-RL+
IN-RL
S-GND
IN-RR
OUT-RR+
OUT-RR-
OUT-FR+
OUT-FR-
DIAG
ANT-REM
AMP-REM
SERVO5V
MECH6V
VP
B.UP+B
SDA
SCL
VP2
PGND3
SVR
IN-FL
IN-FR
BEEP
PGND2
VP1
STB
PGND1
RST
CRES
AUDIO8.3V
GND
PANEL+B
CBU
FL
RL
RR
VP
FR
I
2
C BUS
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