Sony HCD-LX20I Service Manual ▷ View online
HCD-LX20i
HCD-LX20i
17
17
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF) 50
• All capacitors are in μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specifi ed.
• f : internal component.
•
C : panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
•
A : B+ Line.
•
H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– CD Board –
no mark : CD PLAY
– Other Section –
no mark : TUNER (FM/AM)
• Voltages are taken with VOM (Input impedance 10 M
no mark : CD PLAY
– Other Section –
no mark : TUNER (FM/AM)
• Voltages are taken with VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F :
TUNER
(FM/AM)
J
: CD PLAY
i : iPod
f :
AUDIO
IN
For Printed Wiring Boards.
Note:
•
•
X : parts extracted from the component side.
•
Y : parts extracted from the conductor side.
•
W : indicates side identifi ed with part number.
• f : internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
B
These are omitted.
C E
Q
Note:
The components identi-
fi
The components identi-
fi
ed by mark
0 or dotted
line with mark
0 are criti-
cal for safety.
Replace only with part
number specifi ed.
Replace only with part
number specifi ed.
Note:
Les composants identifi és
par une marque
Les composants identifi és
par une marque
0 sont
critiques pour la sécurité.
Ne les remplacer que par
une piéce portant le nu-
méro spécifi é.
Ne les remplacer que par
une piéce portant le nu-
méro spécifi é.
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• Circuit Board Location
PANEL board
MAIN board
DRIVER board
CD board
PT-AC board
KEY-EJECT board
KEY-VOL board
AU-JACK board
IPJ board
HP-JACK board
• Waveforms
– CD Board –
IC101 JB (RFi)
(CD play mode)
(CD play mode)
200 mV/DIV, 500 ns/DIV
0.5 to 1.3 Vp-p
IC101 XG (XO)
(CD play mode)
(CD play mode)
1 V/DIV, 20 ns/DIV
59.1 ns
3.3 Vp-p
RB
IC801 X (XOUT)
500 mV/DIV, 5
μs/DIV
13.3
μs
1.2 Vp-p
XB
IC501 RG (X1A)
1 V/DIV, 10
μs/DIV
30.5
μs
3.1 Vp-p
XT
IC501 PT (X1)
1 V/DIV, 100 ns/DIV
166 ns
3.2 Vp-p
– MAIN Board –
– PANEL Board –
HCD-LX20i
HCD-LX20i
18
18
6-3. PRINTED WIRING BOARD - CD Board -
M401
M402
S201
CN201
R150
R149
R148
R154
R153
C148
C110
C109
C301
C303
C302
C104
R110
C116
C404
R203
R204
R205
R206
R207
R208
R209
R210
R219
R223
R222
R147
R221
R218
R146
R145
C150
C403
R202
C151
C105
C147
C146 C145
C152
C118
C117
C144
C101
C125
C143
C120
R144
R157
C142
C141
C140
C100
C107
R408
R156
C124
IC401
C127
C126
CN301
R101
C119
C102
IC101
R414
C103
R405
C113
R102
R402
R105
R106
C132
C138
C137
R135
R134
R136
R130
R128
R129
R143
R142
R139
C136
C149
C139
R140
R151
C122
C123
R220
R104
R113
R126
R125
R127
R155
C128
C106
C201
R304
R302
C309
C205
C207
C307
R201
R303
C133
R111
R112
R162
C115
R211
Q301
C108
R301
C204
C202
C206
C306
C401
R415
C405
C130
R114
C153
C112
IC201
R163
R164
R118
X102
R165
R166
M
M
(SPINDLE)
(SLED)
A
PANEL BOARD
CNS411
CD BOARD
(CONDUCTOR SIDE)
1-878-847-
11
(11)
TP122
(RFEQ)
TP124
(VC)
(LIMIT)
OPTICAL
PICK-UP
BLOCK
(KSM-215CFP)
1
3
4
5
1-878-847-
11
(11)
E
CD BOARD
(COMPONENT SIDE)
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
10
•
: Uses unleaded solder.
• See page 17 for Circuit Boards Location.
(Page 24)
HCD-LX20i
HCD-LX20i
19
19
6-4. SCHEMATIC DIAGRAM - CD Board -
• See page 17 for Waveforms. • See page 28 for IC Block Diagrams. • See page 29 for IC Pin Function Description.
R154
R153
C201
R304
R201
R110
R303
R203
R204
R205
R206
R207
R208
R209
R210
R219
R223
R222
R221
R218
R112
R202
R211
Q301
R301
C202
R157
TP122 (RFEQO)
TP124 (VC)
R156
CN301
R101
C401
R415
R102
R128
R129
R143
R142
R139
R114
R140
R151
R220
R150
IC101
R105
R106
R125
R126
R127
IC201
X102
C301
C307
C309
C100
C138
C153
C151
C204
C130
C128
C1
13
C127
C126
C103
C102
C120
C118
C117
C101
C124
C125
R145
R146
R147
R148
R149
C149
C105
C143
C146
C145
C148
C104
C405
C404
C403
C205
C116
C133
CN201
C110
R113
R111
C115
R155
C109
C132
R104
C123
C122
C139
C150
R136 R135
R134
C112
C108
R118
C136
C107
R130
R144
C144
C147
C140
C137
C141
C142
C106
R302
C306
C303
C302
R405
R402
R408
R414
C207
C152
C206
IC401
SP-
SP+
SPIN
M-MUTE
1M
1M
100
10V
2.2
0
10k
2.2
100
100
100
100
100
100
100
100
100k
100k
100k
100k
100k
100
0
100
2SA2119K
100k
100
10V
10V
100
100
16P
220
220
10V
47k
10k
470k
1k
47k
22k
47k
10k
0
0
100k
0
TK63115SCL-G@GT
0.1
1
0.001
0.1
470p
0.1
2200p
0.1
0.1
0.0022
0.1
0.1
0.1
0.01
0.01
0.022
C119
0.022
0.022
0.1
0.0047
0.0047
0
0
0
0
0
22p
0.1
0.01
470p
0.01
47p
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
10k
100
22
6.3V
47
0.1
0.1
0
470p
470p
0.01
0.001
22k
470k
1M
0.1
0.1
47p
0.1
4.7k
22k
0.1
0.1
0.01
0.01
0.0022
0.1
100
10V
0
100
10V
10V
10
10
10k
2.2k
R162
4.7k
R163
10k
2.2k
4.7k
1
2200p
1
BA5826HFP-E2
SP-
SP+
SL+
SL-
1M
1k
0
0
0
16.934MHz
TC94A70FG-006 (D, HZ
5p
5p
21P
100k
IC101
CD-MP3 PROCESSOR
IC401
COIL/MOTOR DRIVER
IC201
+1.5V REGULATOR
SP-
SP+
SL+
SL-
M401
(SPINDLE)
M402
(SLED)
AUTOMATIC POWER
CONTROL
S201
(LIMIT)
SLIN
(SLIN)
SL-
SL+
RESET_T
T-
T+
(TIN)
TIN
F-
F+
(FIN)
FIN
IC B/D
A
PANEL
BOARD
CNS411
2
1
IC B/D
OPTICAL
PICK-UP
BLOCK
(KSM-215CFP)
M
M
RFZI
FEO
TEO
FOO
TRO
TEZI
VCOI
FGIN
IN_SW
/DFCT
ROUT
LOUT
PIO1/ST_REQ
REQ
AOUT2
ST_REQ/CKO
GA
TE
BCKO
LRCKO
BCKI
LRCKI
PDO
LPFO
SLCO
RFI
RFRPI
RFEQO
VRO
RESIN
VMDIR
RFI
RFRPI
RFEQO
VRO
RESIN
VMDIR
AGCI
RFO
RFO
LDO
MDI
MDI
R166
0
R164
15k
R165
10k
(Page 25)
HCD-LX20i
HCD-LX20i
20
20
6-5. PRINTED WIRING BOARD - MAIN Board -
20
21
2
1
3
1
B
E
B
E
B
E
B
E
B
E
B
E
1
3
1
3
O
I
5
1
1
13
1
3
B
E
B
E
CNA101
CNS211
CNS212
L851
L852
J351
CNS251
C223
C224
C225
C226
X801
C818
C243
C244
C245
C246
C247
C248
Q119
Q120
Q121
JW801
JW802
Q122
JW803
Q123
JW804
Q124
JW805
Q125
JW806
Q126
JW807
JW808
JW809
IC202
JW810
JW811
JW812
JW813
JW814
JW815
JW816
JW817
JW818
JW819
JW820
JW821
JW822
JW823
JW824
JW825
JW826
JW827
JW828
W301
W302
J802
CF801
CF803
CF805
C101
C102
CNS351
C321
C322
JW101
JW102
JW103
JW104
JW105
JW107
JW108
JW109
C353
C354
D101
C162
D102
D103
JW110
D104
JW111
JW112
JW113
JW114
JW115
JW116
JW117
JW118
JW119
JW120
JW121
JW122
JW124
JW125
JW126
JW127
JW128
JW123
JW129
JW130
JW131
JW132
JW106
JW133
JW134
JW135
JW136
JW137
JW138
JW139
IC301
JW140
JW141
JW142
JW143
JW144
JW145
JW146
JW147
JW148
JW149
L803
L804
L805
L806
JW150
JW151
JW152
JW153
JW154
JW155
JW156
JW158
JW159
JW160
JW161
JW162
JW163
JW165
JW166
B E
B E
B E
1
14
15
28
36
18
1
19
B
E
E
B
E
D D G
S
D
D
B E
B
E
B
E
B
E
B E
B E
BE
B E
B
E
D171
R210
R211
R212
R213
R214
R802
R803
R805
R806
R807
R808
D191
R809
D192
D193
R231
R232
R233
R234
R811
R813
R815
R816
R817
R817
R818
C201
R819
C202
C203
C204
C205
C206
C207
C208
R820
C209
R821
R822
R823
R824
R825
R826
C210
C211
R829
C212
R831
R836
R837
R838
R839
R261
C801
R262
C802
C803
C804
R840
C805
R841
C806
R842
C807
R844
C809
R845
R846
R847
R848
R849
C810
C811
C812
R850
C814
C815
R851
C816
C817
R853
R854
C819
C820
C821
C822
C823
C824
C825
C826
R863
C827
C828
C829
R866
C830
C255
C831
C256
C832
C257
C253
C833
C258
C835
C836
C838
C839
R877
R878
C840
C843
C846
R883
R884
C851
C853
C854
C855
C856
Q128
Q129
IC201
IC203
D802
D803
D805
G1
G2
G3
D807
G4
JR801
G5
JR802
G6
JR803
JR804
JR805
C870
C871
D812
C873
C874
C875
IC801
C887
C888
Q161
R101
Q162
R102
R103
Q164
R104
Q165
R105
R106
R107
R108
R109
R301
R302
R303
R110
R304
Q171
R305
Q172
R306
Q173
R307
Q174
R308
Q175
R309
D851
R311
R312
R313
R314
VT001
R126
R127
R128
R129
R130
Q191
R131
R132
R133
R134
R135
R136
R137
R138
C103
C104
R144
R145
R146
R147
R148
R149
C301
C302
C303
R340
C304
C305
C306
C307
JR881
JR882
C310
C311
C312
C313
C314
R160
R161
C125
R163
R164
R165
R166
R167
R168
R169
R171
R365
R172
R173
R174
R175
R177
R178
R179
R180
R183
R184
R191
R192
R193
R194
R195
R196
R197
C350
C351
C352
C161
C163
JR101
JR102
JR103
JR104
C171
C172
C173
C175
D121
D122
Q801
Q802
Q803
R201
R202
R203
R204
R205
R206
R207
R208
R209
B
PANEL
BOARD
CNS402
1
8
4
5
F
AU-JACK
BOARD
CNA901
G
HP-JACK BOARD
CNA921
1-878-851-
11, 12, 13
(11, 12, 13)
MAIN BOARD
(VT)
TP
(TUNER OUT L-ch)
(GND)
TP
(TUNER OUT R-ch)
ANTENNA
FM/AM
O
I
O
I
–
–
+
+
L
R
SPEAKER
IMPEDANCE
USE 4
:
J
PT-AC
BOARD
CNS002
(CHASSIS)
(CHASSIS)
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
•
: Uses unleaded solder.
• See page 17 for Circuit Boards Location.
Ref. No. Location
• Semiconductor
Location
D101
F-5
D102
F-5
D103
G-6
D104
F-6
D121
F-5
D122
G-4
D171
H-5
D191
F-5
D192
G-4
D193
H-6
D802
D-6
D803
D-5
D805
D-5
D807
B-4
D812
C-7
D851
D-6
IC201
H-2
IC202
I-3
IC203
G-3
IC301
H-6
IC801
C-5
Q119
G-4
Q120
F-5
Q121
G-4
Q122
G-4
Q123
E-5
Q124
E-4
Q125
F-4
Q126
F-5
Q128
H-5
Q129
H-5
Q161
H-5
Q162
H-5
Q164
H-5
Q165
H-5
Q171
I-4
Q172
H-5
Q173
H-5
Q174
I-4
Q175
H-4
Q191
G-5
Q801
A-4
Q802
B-5
Q803
B-7
(Page 24)
(Page 26)
(Page 26)
(Page 26)
Ver. 1.1
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