Sony CX-LEMV300 / XR-EMV300 Service Manual ▷ View online
21
21
CX-LEMV300
6-3. BLOCK DIAGRAM – MAIN SECTION –
• R-CH is omitted due to same as L-CH.
: TUNER
: CD
• Signal Path
: AUX
: PB (TAPE)
: REC (TAPE)
: MIC
BIAS
OSC
Q307
+9V
ERASE
TU COUNT
99
TU CLK
100
TU CE
84
SYSTEM CONTROLLER
IC801 (2/2)
TU DATA
98
L
R
AUX IN
J303(1/2)
SUB
WOOFER
J303(2/2)
J301
PHONES
R-CH
L
R
FUCTION
KEY
REMOTE
CONTROL
RECEIVER
IC802
S801-806
D811
ECO
TUNER PACK
L-CH
R-CH
R-CH
TU-DI
TU-DO
TU-CL
CE
TUNED
R-CH
TU TUNED
93
REC/PB
SWITCH
Q326-332
T301
BIAS OSC
Q308
TAPE
MECHANISM
DECK
(CMAL5A220A)
PLAY
SOLENOID
DRIVER
Q321,322
MOTOR
DRIVER
DRIVER
Q323,325
TA REC/PB
77
TA BIAS
74
TA SW
24
32.768kHz
12
32.768kHz
13
X801
32.768kHz
8.64MHz
15
8.64MHz-EXTAL
16
SFT-CLK
25
X802
8.64MHz
29
RMC
FUCTION
KEY
S807-813
19
KEY2
VOL
ENCODER
RV801
22
VOL.ENC
75
ECO.LED
3
1
RESET
SWITCH
Q815
11
RST
RESET
IC803
1
3
20
I POWER DOWN
D907-910
RELAY
DRIVE
AC
IN
Q311
RY251
18
KEY1
82
CD
+10V
SOUND PROCESSOR
IC302
AUX-L
19
18
OUT-L
TU-L
23
TA-L
2
CD-L
21
16
OUT-R
R-CH
13
CONT
28
RECO-L
TU MUTE
80
TU STEREO
92
STEREO
MUTE
HEAD
(REC/PLAY/ERASE)
R-CH
(R)
(L)
PACK
REC
T END
M1
DECK
MOTOR
SOLENOID
R-CH
F-DATA
10
O-VFON
85
TA PLAY.SW
79
TA MOTOR
6
TA END
5
TA SOL
4
I-MIC
23
E-DATA
87
E-XLT
86
E-SQCK
88
C-DOOR
76
POWER
AMP
R-CH
J302
SPEAKER
45
47
50
.
52
66
.
SEG1
SEG20
37
44
G1
G8
FLUORESCENT
INDICATOR TUBE
FL801
F1
F2
POWER
CONTROL
D810
IC801 VDD1,VDD2
+5.6V (SUB)
D813
26
I POWER MONITOR
Q315
+5V
Q309
11
4
1
IC303
78
AMP-STNBY
13
D809
IC801 VDD3
+9V
REG
IC305
D920
D921
1
3
PT901
POWER
D916-919
F1(AC 3.5V)
F2(AC 3.5V)
+5V
REG
Q305
(MAIN)
+5V
+5V
REG
Q339
TU B+
TU B+
RIPPLE
FILTER
Q310
VM (+9V)
D319-321
D912
D924
D923
POWER AMP
VCC
AC
DET
Q333
-5V
-5V
REG
Q306
FL -26V
REG
Q335,336
FL -26V
POWER
MONITER
Q338
+5.6V
REG
Q312-314
D317
8
POWER ON
+5.6V( SUB)
R-OUT
L-OUT
D
VCD SECTION
(MAIN)
TRANSFORMER
PT902
POWER
(SUB)
TRANSFORMER
M
MIC
J502
S800
(OPEN)
Q501,508
MIC MUTE
MIC IN
6
7
3
1
DISK
IC502
ECHO PROCESSOR
IC501
MIC AMP (2/2)
IC501
MIC AMP (1/2)
SDI
SLT
SCK
31
3
4
5
23
D951
6
PBO-L
7
VOLIN-L
R-CH
14
13
10
12
IC503
SELECTOR
IC504
VOCAL
FADER
FADER
FAN
FAN
(MY,SP)
DRIVER
Q401-403
VOLTAGE
SELECTOR
S901
Q807
SWITCH
5.8V
REG
REG
Q801-803,806
5V
REG
Q804,805
CD+5V
CD+5.8V
22
22
CX-LEMV300
6-4. PRINTED WIRING BOARD – BD BOARD –
• See page 17 for Circuit Boards Location.
•
: Uses unleaded solder.
IC101
IC102
IC103
E
TP7(VC)
TP4(FE)
TP2(TE)
TP8(RFAC)
TP6(RFDC)
(A-MAX.D)
R290
R320
FB101
VCD
BOARD
CN803
(Page 24)
9
R286
R285
R287
R317
R289
R288
VCD
BOARD
CN802
(Page 24)
1
2
A
B
C
D
3
4
5
6
7
Ref. No.
Location
IC101
B-6
IC102
C-6
IC103
C-5
Q101
C-3
• Semiconductor
Location
23
23
CX-LEMV300
6-5. SCHEMATIC DIAGRAM – BD BOARD –
• See page 18 for Wavefoms. • See page 34 for IC Block Diagrams.
RV101
IC102
CN102
R116
M101
M102
C152
CN101
R131
R118
R111
C1
03
C
1
01
C111
C108
C109
C
102
C117
R123
C116
R114
C132
R122
R133
C115
R
11
5
C107
C110
R132
R103
R120
R104
C153
R220
C151
R221
R226
R225
R227
R222
R224
R223
TP3
TP4
TP2
R
202
R
20
1
R252
R
2
18
R
2
03
C226
IC101
C202
C205
C230
R151
C20
9
R
2
04
R219
C112
R206
TP7
TP5
R253
C258
TP8
TP6
C1
04
C212
C114
C213
C227
C222
R168
R166
C150
R230
C122
C316
C156
R113
L163
R309
R167
R169
R101
C113
R308
C211
FB203
R310
R318
R321
R316
R314
R311
X201
C254
R303
R
20
5
C216
C224
C
273
C313
C133
C131
C118
C119
R155
R
2
07
C215
C310
R
163
R
162
R
19
9
TP1
R152
R105
R102
FB101
C231
R312
R320
R317
R290
R289
R288
FB161
R231
R232
R233
R287
R286
R285
C121
CN105
R117
R126
R125
Q101
IC
1
03
R313
R260
R261
47k
33k
0.1
16P
68k
10k
150k
4
70p
47
0
p
47 4V
0.1
0.1
0.1
B
0.1
3.3
0.1
B
390k
0.022
100k
2.2k
100 10V
3
3k
33p
0.1
B
330k
100k
120k
15k
0.1
1k
0.1
100
100
100
100
100
100
100
SE
FE
TE
10
k
33
k
1k
100
k
47 4V
CXD3068Q
0.1
0.1
0.1
1k
0.1
VC
RFACI
RFAC
RFDC
33
00
p
1000p
0.1
220 10V
150
0
0
0
100
10V
10V
0
0.01
1
2
20p
2.2
0.068
1
1
0.47
B
0.1
0
SP
1k
15k
0
0
100
100
100
0
0
0
0
9P
2SB970
-(TX).S0
C
X
A
26
47
N
-T4
0
AN41020A
100k
1k
1M
22p
100
p
4.7k
3.3k
23P
1k
1k
1500p
3300p
0.1
0.1
0.1
0.01
2.4k
0
0
0
0.1
0
0
0
0
0
0
16.9344MHz
22p
0
1k
0.1
0
1M
10
k
10k
2.2k
0
220
10V
10V
0
22
22
22
0.1
390k
47k
47k
0
0.1
VCD
BOARD
(2/2)
CN803
(Page 26)
VCD
BOARD
(1/2)
CN802
(Page 25)
24
24
CX-LEMV300
6-6. PRINTED WIRING BOARD – VCD BOARD –
• See page 17 for Circuit Boards Location.
•
: Uses unleaded solder.
IC804
IC701
IC805
IC802
IC801
IC803
V-OUT BOARD
CN771
(Page 32)
MAIN BOARD
CN305
(Page 27)
BD BOARD
CN105
(Page 22)
BD BOARD
CN102
(Page 22)
FRONT BOARD
CNP803
(Page 30)
Ref. No.
Location
D301
C-7
D701
C-6
D801
C-2
D803
B-6
D805
B-5
IC701
C-6
IC801
B-1
IC802
B-3
IC803
B-1
IC804
C-8
IC805
A-2
Q309
C-7
Q801
C-7
Q802
C-3
Q901
A-5
• Semiconductor
Location
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