Sony CX-LEM300 / XR-EM300 Service Manual ▷ View online
21
21
CX-LEM300
6-5. Printed Wiring Boards – Main Section –
• See page 15 for Circuit Boards Location.
IC305
IC303
IC302
TUNER
PACK
TO
CONTROL
BOARD
CN802
(Page 23)
TO
CONTROL
BOARD
CN805
(Page 23)
TO
POWER
BOARD
CN901
(Page 25)
18
L-CH
R-CH
ERASE
REC/PB
HEAD
(REC/PLAY/ERASE)
PHONES
+
-
-
+
L
R
SPEAKER
IMPEDANCE
USE6-16
L
R
AUX IN
SUB
WOOFER
9
Ref. No.
Location
D301
E-5
D302
C-4
D303
B-7
D304
C-5
D305
E-4
D306
F-4
D310
E-4
D311
B-4
D312
A-6
D313
A-6
D317
E-5
D318
E-6
D319
G-4
D320
G-4
D321
G-3
IC302
C-3
IC303
F-2
Q305
E-4
Q306
F-4
Q307
D-5
Q308
D-5
Q309
D-5
Q310
B-4
Q311
F-5
Q312
E-4
Q313
E-5
Q314
E-4
Q315
E-5
Q317
A-6
Q319
A-6
Q320
B-6
Q321
A-5
Q322
B-5
Q323
A-4
Q325
B-4
Q326
D-4
Q327
D-4
Q328
C-4
Q329
C-4
Q330
C-4
Q331
C-4
Q332
C-4
Q333
F-5
Q334
E-6
Q335
F-6
Q336
F-6
Q337
F-6
Q338
E-6
Q339
C-5
• Semiconductor
Location
22
22
CX-LEM300
6-6. Schematic Diagram – Main Section –
• See page 16 for Waveform. • See page 27 for IC Block Diagrams.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
10
11
1
2
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
GND
TA-L
TA-R
PB0-R
PBO-L
GND
TRE-L
CONT
VEE
BASS-R
OUT-R
BASS-L
VDD
TRE-R
OUT-L
AUX-L
CD-L
CD-R
TU-L
TU-R
RECO-R
RECO-L
NF-L
NF-R
NF-L
NF-R
AUX-R
VOLI-L
VOLI-R
AC DET
16V
8V
RELAY ON
B+-10V
TU-LCH
TU-RCH
TU-CL
TU-DO
TU-DI
TU-CE
TUNED
STEREO
GND
MUTE
REC/PB
A-MUTE
P-CONT
AMP-STBY
AMP-M
UTE
CD-LCH
CD-RCH
AC-DET
GND
GND
AC CHECK
F DATA
TA BIAS
5V(M
AIN)
TU-CL
TU-DO
TU-DI
TU-CE
TUNED
STEREO
M
UTE
RDS-IN
RDS-OUT
TA SOL
TA M
OTOR
SOL9V
M
OTOR9V
CD ON
CD5V
CD7V
TA GND
M
GND
CD AGND
DGND
FL-35V
AC3.5V
AC3.5V
FM
-SIGNAL
FL-GND
AC3.5V
AC3.5V
5.6V(SUB)
-8V
PROTECT
FL-26V
CD +5V REG
Q326-332
REC/PB
SWITCH
BIAS OSC
SWITCH
SWITCH
PB/REC EQ AMP
L-CH
R-CH
REC/PB
HEAD
(REC/PLAY/ERASE)
ERASE
R
L
+5V REG
-5V REG
POWER AMP
SUB WOOFER
AUX IN
R
L
SPEAKER
IMPEDANCE
PHONES
+
-
+
-
1
3
+10V REG
3
1
TO
BOARD
POWER
CN901
Q312-314
+5.6V REG
RELAY
DRIVE
POWER MONITOR
AC DET
POWER CONTROL
MOTOR
DRIVE
MOTOR
DRIVE
+5V REG
Q334-337
FL-26V REG
Q321,322
T SOL DRIVE
+7V REG
CD POWER
CONTROL
+5V REG
TO
BOARD
CONTROL
CN802
TO
BOARD
CONTROL
CN805
TUNER
PACK
FILTER
IN1
PREGND
IN2
ST-BY
VCC1
VCC2
+OUT2
PW
RGND2
-OUT2
-OUT1
PW
RGND1
+OUT1
M
UTE
(Page 24)
(Page 24)
(Page 25)
IC302
C103
C203
C
1
0
8
C
20
8
C110
C210
C
1
13
C
11
4
R312
R313
C301
Q305
C303
C
3
0
2
C304
L101
L102
L202
L201
Q313
Q312
Q315
Q309
J301
C315
R105
R205
R103
R203
R
20
2
R
10
2
R
11
1
R
21
1
R
1
13
R
2
13
R
11
4
R
2
1
4
R
2
2
0
R
1
2
0
R
2
1
9
R
1
19
R
109
R
209
R122
R222
R303
Q306
R226
R126
R306
R301
R302
R325
R324
R323
D
31
0
R321
Q308
R315
C319
C320
C327
D311
Q310
R316
Q317
Q320
Q321
Q322
Q325
R318
R330
C331
D303
R329
R304
R305
D302
R319
R320
C312
C313
Q328
Q329
Q330
Q327
Q326
Q331
Q332
R336
D
3
17
Q334
Q335
Q336
Q337
D318
R
3
3
7
R339
R340
R341
R342
C126
C226
R242
R142
R347
C128
C228
C129
IC305
Q319
R331
R328
D312
D313
R317
R348
Q323
Q311
Q314
R326
D
30
1
R351
R350
Q333
Q338
R355
R354
R106
R206
R207
R107
R208
R108
R112
R212
R
21
6
R
1
16
R
2
17
R
1
1
7
R
21
8
R
1
1
8
R125
R225
R136
R237
R137
R349
C
1
0
2
C
202
C106
C316
C333
C
1
32
C
2
3
2
Q307
R322
R124
R224
C
10
9
C
209
C
2
12
Q339
D
304
R332
C335
R143
R243
C215
C115
R
1
23
R223
R104
R204
C
111
C
21
1
R
3
57
R
3
5
6
C342
R131
R
2
31
R314
C227
C127
R132
C322
C234
R232
R309
C349
R327
R311
R101
C314
R
22
8
D
3
05
D
3
06
R
121
R
2
21
T301
C
213
C214
C133
C233
C
20
7
C
10
7
C204
C104
R
115
R
215
C
21
7
C
11
7
C
1
1
6
C
2
1
6
C305
R352
C118
R128
C134
C
2
1
8
R
12
9
C
12
0
R
1
3
0
C1
2
1
R
2
30
R
2
2
9
C
2
21
C
2
2
0
C350
C119
C310
C219
C344
C343
C206
C
3
36
CN307
C
3
09
C
3
2
3
C346
C324
C326
C
20
1
C
1
0
1
C318
R201
R310
C317
C348
C3
3
7
C330
C332
C328
R345
R344
R338
R343
C338
C339
C340
C
3
4
1
CNP305
R346
C329
C223
R139
C229
R239
C311
R238
R138
C112
R236
CN304
CN303
CN302
CN301
J303
J302
CNP308
C345
R140
R240
C230
C130
C347
IC303
C123
D319
D320
D321
BD3881FV
100p
100p
33
0
0
p
3
3
00
p
180p
180p
0
.22
5
0
V
0
.47
5
0
V
4.7k
47k
10p
KTC3203Y-AT
0.01
22
2
5V
0.01
KTC3203Y
KTC3203Y
KRC402-RTK
KRC402-RTK
47 25V
390k
390k
470
470
3
9k
3
9k
2.2k
2.2k
1k
1
k
1
.8k
1
.8
k
1
0
k
10k
1.5
k
1.5k
2
.2
k
2.2k
68k
68k
4.7k
KTA1271Y-AT
22k
22k
10k
10k
4.7k
100k
2.2k
1k
M
TZ
J
-T
-7
7
-5
.6
B
100k
KTA1271Y
2.2k
0.01
0.01
47
25V
MTZJ-T-77-5.6B
KTC3205Y
470
KTC3205Y
KRC402-RTK
KTA1271Y-AT
KRC402-RTK
KRC402-TRK
470
47k
0.01
MTZJ-T-77-5.6B
1k
470
470
1SS133T-77
1M
4.7k
220p
100 16V
2SK2158
2SK2158
2SK2158
KTA1504
KTA1504
KRA303-RTK
KRA303-RTK
4.7k
1S
S
1
33
T
-7
7
KTA1266-GR-AT
KTA1266-GR-AT
KTA1266-GR-AT
KTA1266-GR-AT
MTZJ-T-77-27B
10
0k
4.7k
4.7k
4.7k
4.7k
220p
220p
22k
22k
1k
22 50V
22 50V
22 50V
KIA7809API
KTA1271Y-AT
47k
1k
1N4002 1N4002
47k
1k
KYA1271Y-AT
KTA1271Y-AT
KTA1271Y-AT
100k
1
SS
13
3
10k
10k
KRC402-RTK
KRC402-RTK
100k
10k
5.6k
5.6k
150k
150k
8.2k
8.2k
33k
33k
8.2
k
8.2
k
1k
1k
4.7
k
4.7
k
22k
22k
10k
4.7k
4.7k
JR
1
0
0
0p
1
0
00
p
0.022
6800p
470 16V
4
.7
5
0
V
4
.7
50
V
KTC3205Y-A
1k
22k
22k
4
70
p
47
0p
3
3
00p
KTC3203Y
M
TZJ-T
-7
7-5.6B
1k
0.01
10k
10k
4.7
50V
4.7
50V
2
.2
k
2.2k
82
82
560
0p
5
600p
4
7k
4
7
k
470 16V
3.3k
3
.3
k
5.6k
470p
470p
1k
0.01
2200p
1k
4.7
22
25V
10k
22k
5.6k
0.012
3
.3k
M
TZ
J-T
-7
7-5
.1
A
M
T
Z
J-T-7
7-5
.1A
1k
1
k
BIAS OSC
0.2
2
50
V
0.47
50V
0.056
0.056
2.2
50
V
2
.2
5
0V
47
10V
47
10V
3
.3k
3.3
k
12
00p
1
2
00p
470
p
4
70p
220
10V
10V
470
0.033
3.3k
2200p
0.0
33
2
.2
0.1
2
.2
0.1
2.2
2
.2
0
.1
0.1
0.047
4.7
50V
50V
47
25V
4.7
50V
47
25V
47
25V
0.022
2
2
5
0V
3P
10
0
0
1
6
V
4
70
0
2
5V
470
16V
16V
220
16V
16V
2200p
10
0
0
p
1
00
0
p
0.01
5.6k
3.3
1000p
0.1
2
2
50
V
220
10V
100
16V
100
16V
16V
4.7
3.3
10
4.7
100 10V
0.01
0.1
0.1
10P
3.3
100
16V
16V
1000
16V
180
22 50V
180
10
50V
180
180
3300p
10k
11P
21P
19P
7P
3P
100
16V
16V
2.2k
2.2k
10
50V
10
50V
0.1
LA4663
1000
16V
1N4002
1N4002
1N4002
23
23
CX-LEM300
6-7. Printed Wiring Board – Control Section –
Ref. No.
Location
D803
C-5
D807
D-3
D808
D-2
D809
D-2
D810
D-5
D811
B-6
D812
D-3
D813
D-3
IC801
B-3
IC802
A-1
IC803
D-3
Q815
D-2
• Semiconductor
Location
• See page 15 for Circuit Boards Location.
IC801
IC803
IC802
TO
MAIN
BOARD
CN303
(Page 21)
TO
MAIN
BOARD
CN302
(Page 21)
TO
CD
BOARD
CN101
(Page 19)
RED
WHT
S800
(OPEN)
AUX
TUNER/BAND
STOP
TONE
CD
ECO
ECO
DISPLAY
SYNCHRO
REC
REC START
REC PAUSE
REC PAUSE
TAPE
(REC MUTING)
FLUORESCENT INDICATOR TUBE
POWER
STANDBY/ON
STANDBY/ON
TAPE MECHANISM
DECK
24
24
CX-LEM300
6-8. Schematic Diagram – Control Section –
• See page 16 for Waveforms.
S807
S808
S809
S810
S811
S812
S801
S802
S803
S804
S805
S806
Q815
IC803
RV801
VOLUME
C809
C811
C813
D807
D808
D811
R822
R840
R841
R842
R843
R844
R845
R846
R847
R848
R850
R851
R852
R853
R854
R883
R
882
R
88
4
R839
R826
R827
R830
R831
R832
R833
R834
R
803
R
8
04
R
80
5
R
806
C
8
36
R
8
16
R
81
9
R877
R878
R
858
R
857
R
86
9
R
870
R885
R886
R887
R888
R889
R890
R891
R893
S813
R871
R
89
4
R895
C
81
5
R
8
09
R872
R897
X
80
2
R820
X
80
1
R865
R810
C803
C820
R
8
66
R879
R881
R880
R864
D809
D810
R
81
4
C8
02
R892
IC801
D812
D813
R876
R875
R
8
12
R828
R
8
13
R829
R835
R836
R849
R
8
11
R
8
01
R
802
R
8
96
R
80
7
R
80
8
R
P2
0
R
P
19
R
P
18
R
P1
7
R
P
16
R
P
15
R
P
14
R
P
13
R
P1
2
R
P
1
1
R
P1
0
R
P
0
9
R
P
08
R
P
07
R
P
06
R
P
0
5
R
P
0
4
R
P
03
R
P
02
R
P
0
1
R
G
08
R
G
0
7
R
G
06
R
G
05
R
G
04
R
G
0
3
R
G
02
R
G0
1
IC802
C840
C841
FL801
S800
R821
C818
C819
C812
R823
R824
R825
C814
C801
C804
C
816
C8
17
R818
C805
C806
R859
R855
C821
C829
C828
C830
C831
R863
R861
R860
C822
D803
C808
C835
C
807
C
834
C839
CN802
CN801
CNP804
CN805
CN803
C810
R815
R856
R8
67
KTC3875Y
PST592C
0.01
0.01
0.01
1SS133T-77
1SS133T-77
SEL2215S-CD
1k
2.2k
2.2k
2.2k
1k
4.7k
470
10k
10k
2.2k
2.2k
1k
4.7k
470
10k
2.2k
10
k
1
k
10k
1k
1k
1k
1k
1k
1k
1k
1
k
1
k
1
k
1k
1
8p
1k
1k
47k
47k
1k
1k
1
k
1
k
100k
100k
100k
100k
100k
100k
100k
100k
22k
1
0
k
1k
10
00
p
47
k
100
100
8.64M
H
z
100k
3
2.7
68
KH
z
10k
10M
0.01
0.01
10k
22k
2.2k
10k
10k
1SS133T-77
1SS133T-77
39
0k
24p
1k
LC876756C-51R6-E
1SS133T-77
1SS133T-77
1k
1k
1k
1k
1k
1k
1k
1k
2.2k
2
2k
5
.6
k
5.6k
47k
1k
1k
1
00
K
100
K
100
K
100K
10
0K
10
0K
1
00
K
100K
1
00
K
1
00
K
10
0K
100
K
100
K
1
00K
1
00K
10
0
K
1
00
K
1
00K
10
0K
10
0
K
10
0K
100
K
10
0K
10
0K
1
00K
10
0K
1
0
0K
10
0K
NJL64H380A
0.1
0.1
HNA-08SS49T
10k
1
50V
1
50V
100
16V
16V
1k
1k
1k
100 16V
24p
100 6.3V
2
0p
20
p
56k
22
16V
0.01
100
22k
0.01
47
25V
470
6.3V
0.1
0.1
10k
47k
47k
22
16V
1SS133T
-77
100
6.3V
6.3V
4.7
50V
50V
0.0
1
4.7
50
V
0.1
21P
7P
2P
19P
21P
0.01
220k
10k
47
k
Ver 1.1
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