Sony CDX-S2020 Service Manual ▷ View online
13
13
CDX-S2020
CDX-S2020
3-1. BLOCK DIAGRAM — CD SECTION —
82
83
84
85
20
16
D/A
CONV
TRACKING
ERROR
FORCUS
ERROR
1
OSC
EFM
DEMOD
SERVO
CTL
RF
EQ
EQ
13
12
11
10
9
8
6
44
45
49
48
33
34
35
41
40
39
38
I/F
87
86
2
1
LD
DRIVE
Q1
FOCUS
COIL
DRIVE
TRACKING
COIL
DRIVE
SLED
MOTOR
DRIVE
SPINDLE
MOTOR
DRIVE
LOADING
MOTOR
DRIVE
28
12
11
13
14
15
16
17
18
9
10
5
47
46
19
M902
(SLED)
M901
(SPINDLE)
M903
(LOADING)
SW4
(LIMIT)
SW2
(SELF)
SW1
(DOWN)
SW3
(DISC IN)
X1
16.9344MHz
OPTICAL PICK-UP
(KSS1000E)
I-V
CONV.
CDL
CDR
CDR
CD_STB
CD_A0
CD_SO
CD_SI
CD_SCK
CD_RST
30
43 CD_MUTE-L
29
42 CD_MUTE-R
CD_RFOK
CD_INSW
CD_LIMIT
CD_SELFSW
CD_DSW
CD_LM_LO
CD_LM_EJ
TUNER
SECTION
A
23
24
M
M
M
IC602
3.3V
LOUT
ROUT
SI
7
32 CD_INTQ
INTQ
RFOK
LMUTE
RMUTE
SO
SCK
STB
A0
RST
RESET
PD
LD
A
C
B
D
E
F
PD
LD
LD AMP
FOCUS
COIL
TRACKING
COIL
FD+
FD+
FD-
TD+
TD-
SD+
SD-
MD+
MD-
FSC+
FSC-
TRK+
TRK-
SL-
SL+
SP-
SP+
LD-
LD+
LOAD
EJECT
SYSTEM CONTROL
IC501 (1/3)
RF AMP,DIGITAL SERVO,
DIGITAL SIGNAL PROCESSOR
IC1
FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE/LOADING MOTOR DRIVE
IC2
6
FD-
2
TD+
3
TD-
27
SD+
26
SD-
24
MD+
23
MD-
Signal path
: CD
A3.3V
AU3.3V
D3.3V
DR6V
SERVO 3.3V
MECH6V
+
-
+
-
+
-
1
S702
RESET
RESET
3
52 53 54 55 56 57 58 59
(Page 14)
SECTION 3
DIAGRAMS
14
14
CDX-S2020
CDX-S2020
3-2. BLOCK DIAGRAM — TUNER SECTION —
(Page 13)
J1
(ANTENNA)
1 ANT
CDL
CDR
R-CH
3
R-CH
AUDIO 8.3V
TUNER UNIT
TU1
6
S-METER
14
TU-SDA
SYSTEM CONTROL
IC501 (2/3)
24
ACCIN 21
TELATT 23
AMPSTB 70
BEEP 85
CD
SECTION
A
3
11
CN601
1
9
FL+
FL-
2
10
RL+
RL-
4
12
13
7
FR+
FR-
15
RR+
RR-
TEST
ACC
ATT
16 +B (BATT)
8 GND
R-CH
F901
10A
TU_ATTIN
NC
BATT
17
19
18
BATT
EEP_CKO
67
VSM
3.3V
13
TU-SCL
ATT
BATT
59
TESTIN
DIAG
22
93
5
QUALITY
QUALITY
92
NS-MASK
66
VOLATT
60
DAVN
82
SOUND CONTROL
ELECTRONIC VOLUME
IC401
NC
BUS-LCH
5
CD-LCH
9
TV-LCH
7
SDA
SCL
MUTE
CONT.
EVR
29
I2C_SIO
I2C_CKO
79
81
17
E2P-SDA
16
E2P-SCL
8
MUTE-CONDITION
7
TU-MUTE
11
TU-VDD (TU5V)
10
VCC (8.3V)
68 EEP_SIO
28
TU_ATT
64
R-CH
9
RDS
16 MPX
9 XTI
10
1
7
XTO
12
SDA
25
5 ANP-R
27
35
37
34
33
31
30
6 ANT-R
BEEP
STB
4
SCL
2
SDA
CONT.
9
7
6
20
POWER AMP
IC750 (1/2)
MULTIPLE VOLTAGE
REGULATOR
IC750 (2/2)
VP2
VP1
VP1
• Signal path
: FM
: CD
• R-ch is omitted due to same as L-ch.
12
SYSRST
3.3V
37
BUSON 36
UNISI 5
UNICKO 6
UNISO 4
BUIN 31
4
L-CH
OUT
-FL
23
OUT
-RL
22
+5V REG
Q1
BACK-UP CHECK/
LOW VOLTAGE
CHECK
Q581,582
OVER VOLTAGE
DET.
Q580,D580,581
LINE MUTE
CONTROL
Q478,479
TEL
ATT
ATT
Q651
I2C
BUS
ACC
CHECK
Q631
MUTE
Q441
NS MASK
SWITCH
Q22
MUTE
Q461
11
MUTE
TONE
INPUT SELECTOR
EFFECT
15
INTN
11
SCL
5
3
DIAG
ANT-REM
B.UP+B
PANEL+B
MECH 6V
SERVO 3.3V
AUDIO 8.3V
3.3V
PANEL+B
MECH 6V
SERVO 3.3V
AUDIO 8.3V
SERVO 3.3V
AUDIO 8.3V
VP
D760
MUTE
16
22
I2C
BUS
31
30
TU 5V REG
Q51,52
RDS DEMODULATOR
IC51
X51
8.664MHz
15
15
CDX-S2020
CDX-S2020
3-3. BLOCK DIAGRAM — DISPLAY SECTION —
S900-921
KEY
ACTIVE
Q664
REMOTE
RECEIVER
IC971
X502
32.768kHz
15
16
12
13
95
72
74
73
94
27
25
96
83
SYSTEM CONTROL
IC501 (3/3)
LCD DRIVER
IC901
KEYIN0
DATA
CLK
CE
LCDSO
LCDCKO
LCDCE
KEYIN1
KEYACK
XKEYON
RCIN0
SIRCS
XIN
XOUT
OSCOUT
OSCIN
X501
27MHz
63
64
62
COM1
COM4
LCD
LCD901
PANEL +B
PANEL +B
LED900-921,951,952
LED931,932
(LCD BACK LIGHT)
D502
D501
51
|
54
|
S1
S46
|
DI
CL
CE
PANEL +B
KEY
ILLUMINATION
(
)
KEY MATRIX
1
VLCD
CONTROL
IC981
2
2
I
25
•
27
I
38
•
40
I
49
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
for schematic diagram:
• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: MW
J
: CD
for printed wiring boards:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
(Side A)
parts face are indicated.
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
• Waveforms
— Servo Board —
(MODE: CD PLAY)
— Servo Board —
(MODE: CD PLAY)
1
IC1
wd
(XTAL)
1.2Vp-p
0V
0V
Approx. 620mVp-p
Approx. 200mVp-p
16.9344MHz
3
IC1
od
(FEO)
2
IC1
uj
(AGCI)
4
IC1
oh
(TEO)
0.85V to
1.45Vp-p
1.45Vp-p
Ver. 1.1
16
16
CDX-S2020
CDX-S2020
1
A
B
C
D
E
F
G
2
3
4
5
6
7
8
9
10
11
12
13
14
1-688-288-
1-863-346-
1-863-346-
SW3
SW2
TP21
C34
C26
C6
C39
R13
R14
SW1
(DOWN)
R85
C38
R6
R7
R1
R11
C71
R73
R81
C30
R77
R70
R72
C31
R78
R75
R74
R71
R83
R79
R82
R76
R9
C79
C77
C74
R45
C76
C73
C78
JR90
JR91
JR91
C72
C2
C5
C32
C18
C19
C25
C36
C35
IC2
C21
R15
R44
C75
C23
C27
C20
R80
Q1
C70
R84
R12
FB3
C37
X1
IC1
R8
R5
FB2
FMB7
FMB8
FMB9
FMB10
C1
R10
JR41
JR40
C28
R41
FB1
R42
C7
C11
C13
MAIN
BOARD
CNP301
(Page 18)
C29
C17
CN1
CN2
R3
R2
R4
3-4. PRINTED WIRING BOARDS — CD MECHANISM SECTION —
: Uses unleaded solder.
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