Sony CDX-S2050C / CDX-S2050V Service Manual ▷ View online
13
13
CDX-S2050C/S2050V
CDX-S2050C/S2050V
3-1. BLOCK DIAGRAM – CD SECTION –
SECTION 3
DIAGRAMS
76
AGCO
RF AMP,DIGITAL SERVO,
DIGITAL SIGNAL PROCESSOR
IC1
78
RFO
93
FEO
96
TEO
77 AGCI
92 FE–
95 TE–
97
TE2
98 TEC
52 FD+
PD1
PD2
E
F
I-V AMP
PD
LD
DETECTOR
71 RFI
68
EFM
69 ASY
84
82
85
83
87
86
E
C
D
A
B
F
1 LD
2
PD
(FOCUS)
(TRACKING)
2-AXIS DEVICE
OPTICAL
PICK-UP BLOCK
(KSS1000E)
• Siganal Path
: CD PLAY
LASER DIODE
M
M
M
13
14
VO1–
VO1+
15
16
VO4+
VO4–
17
18 VO3–
VO3+
10
9
VOL+
VOL–
FWD
REV
1
28
OPIN2+ 5
53 FD–
OPIN2– 6
54 TD+
OPIN1+ 2
55 TD–
OPIN1– 3
56 SD+
OPIN4+ 27
57 SD–
OPIN4– 26
58 MD+
OPIN3+ 24
59 MD–
OPIN3– 23
11
12
VO2–
VO2+
M903
(LOADING)
M901
(SPINDLE)
M902
(SLED)
FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE/LOADING
MOTOR DRIVE
IC2
12
SO
13
SI
11
SCK
6
RFOK
7
INTQ
10
STB
9
A0
8
RST
CD-L
MAIN
SECTION
A
20
LOUT
16
ROUT
R-CH
20 CD_SCK
89 CD RFOK
55 OP INTQ
92 CD_STB
96 CD_SELFSW
95 CD_INSW
100 CD_LIMIT
91 CD_A0
90 CD RST
CD LM LO
97
CD LM EJ
98
SYSTEM CONTROL
IC501 (1/3)
18 CD_SI
19 CD_SO
SW2
(SELF)
99 CD_DSW
SW1
(DOWN)
SW3
(DISC IN)
SW4
(LIMIT)
30
LMUTE
94 CD_MUTE-L
29
RMUTE
93 CD_MUTE-R
PD2
E
F
LD
PD
FCS+
FCS–
TRK+
TRK–
PD1
AUTOMATIC
POWER
CONTROL
Q1
• R-ch is omitted due to same as L-ch.
24
23
X1
16.934MHz
XTAL
XTAL
(Page 14)
14
14
CDX-S2050C/S2050V
CDX-S2050C/S2050V
3-2. BLOCK DIAGRAM – MAIN SECTION –
1 ANT
7 TU LCH
ELECTRONIC VOLUME
IC401
J1
(ANTENNA)
TU1
(TUNER UNIT)
POWER AMP,
POWER SUPPLY
IC750
SYSTEM CONTROL
IC501 (2/3)
CN601
6 TU RCH
R-CH (FRONT)
R-CH (REAR)
R-CH (REAR)
BATT
9 CD LCH
8 CD RCH
R-CH
4
3
3
10
VCC
11
TU VDD
15
E2P VDD
13
TU-SCL
14
TU-SDA
6
S-METER
7
TU MUTE
16
E2P SCL
17
E2P SDA
39 VSM
AUDIO+8.3V
TU+5V
BU+3.3V
BU+3.3V
12 TU ATT
25 EEP CKO
24 EEP SIO
24 EEP SIO
8
MUTE CONDITION
5
QUALITY
RDS
53 TU ATT IN
38
38
13
QUALITY
NS MASK
DAVN
RDS ON
L-CH
R-CH
CD-L
R-CH
17
18
18
OUT SUB-L
OUT SUB-R
R-CH
L
R
5
3
3
OUT FL+
OUT FL-
9
7
7
OUT RL+
OUT RL-
29
27
27
AMP-REM
R-CH
ANT-REM
BATT
30
37
37
AUDIO8.3V
B.UP+B
31
33
33
SERVO3.3V
MECHA6V
34
PANEL+B
TU+5V
BATT
25
24
24
OUT FR
OUT RR
29
MUTE
2 SDA
AUDIO+8.3V
BU+3.3V
SERVO+3.3V
MECHA+6V
MECHA+6V
PANEL+B
4 SCL
SDA
SCL
16 BEEP
22 STB
25 DIAG
25 DIAG
AUDIO+8.3V
35 VP
15
7
10
12
11
16
1
9
2
4
3
5
6
30
31
31
SCL
SDA
SCL
SDA
SCL
SDA
SCL
SDA
33
I2C CKO
34
I2C SIO
9
VOL ATT
86
ATT
5
BEEP
26
AMP STB
8
DIAG
54
BU IN
73
30
56
TEST IN
12 IN FL
FL+
FL-
RL+
RL-
FR+
FR-
RR+
RR-
AMP-REM
ANT-REM
ACC
TEST
23
OUT FL
11 IN RL
22
OUT RL
MUTE
Q441
MUTE
Q481
AUDIO OUT
J330
MUTE DRIVE
Q478,479
NS MASK
CONTROL
Q22
RDS DECODER
IC51
BATT
72
74
ACC IN
TEL MUTE
BATTERY CHECK
Q580-582
ACC CHECK
Q631
+5V REG
Q1
MUTE
Q461
13
TEL-MUTE
D479
D580,581
FU601
CD
SECTION
A
11
12
9
10
16
1
7
XTI
SCL
SCL
BU+3.3V
SDA
SDA
INTN
XTO
MPX
VDDA
VDDD
TEL MUTE
Q651
RDS POWER
CONTROL
Q51
9
15
X51
8.664MHz
• Signal Path
• R-CH is omitted due to same as L-CH.
: CD PLAY
: FM
: MW/LW
(Page 13)
15
15
CDX-S2050C/S2050V
CDX-S2050C/S2050V
3-3. BLOCK DIAGRAM – DISPLAY SECTION –
MAIN board
KEY board
SENSOR board
SERVO board
tuner unit
(TU1)
(TU1)
• Circuit Boards Location
KEY ACK ON
Q664
X502
32.678kHz
79
80
82
83
41
28
29
27
40
52
76
71
43
77
SYSTEM CONTROL
IC501 (3/3)
LCD DRIVER
IC901
(S2050C)
(S2050V)
(S2050V)
KEYIN0
CLK
CE
LCD SO
LCD CKO
LCD CE
DIMMER
KEYIN1
KEY ACK
XKEY ON
RC IN1
RC IN0
RC IN0
7 NOSE DET
RESET
2
1
XOUT
XIN
OSC IN
OSC OUT
X501
18.432MHz
S702
RESET
63
64
62
1
2
3
COM4
COM1
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
D501 (1/2)
D501 (2/2)
4
|
50
•
55
51
|
54
|
S1
S48
|
CL
DI
CE
64
SIRCS
IR
LED951,952
LSW901-921
S2050C
S2050V
Q921
LED
CONTROL
LED931,932
PANEL+B
IR RECEIVER
IC971
(S2050C)
(S2050V)
(S2050V)
2 OUT
BU+3.3V
J561
(REMOTE IN)
(
)
KEY MATRIX
RESET
IC602
LSW901-921
VDD VOUT
LCD BACK
LIGHT
LED COLOR
SELECT
Q991,992
16
16
CDX-S2050C/S2050V
CDX-S2050C/S2050V
• NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
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 diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
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.
•
f
: internal component.
•
C
: panel designation.
For printed wiring boards.
Note:
• 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.)
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• CD mechanism section
no mark : CD PLAY
• Main (1/2), (2/2) and Display sections
no mark : FM
no mark : CD PLAY
• Main (1/2), (2/2) and Display sections
no mark : FM
(
) : MW/LW
<
> : CD PLAY
∗
: Impossible to measure
• 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.
J
: CD PLAY
F
: FM
f
: MW/LW
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.
Q
C
These are omitted
E
B
E
These are omitted
C
B
C
These are omitted
B
E
1.6Vp-p
8.664MHz
1
IC51
0
(XTO)
2
IC501
i;
(XIN)
1.4Vp-p
32.678kHz
1.2Vp-p
18.432MHz
3
IC501
id
(OSCOUT)
•
Waveforms
— MAIN Board —
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
— SERVO Board —
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
Ver. 1.2
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