DAEWOO SW 351 Service Manual
PORTABLE RADIO CASSETTE
RECORDER WITH CD PLAYER
SERVICE MANUAL
Page Description
Cover
1 Directory
2 Block diagram
3 Circuit diagram - Audio / Tuner
4 Circuit diagram - Tape
5 Circuit diagram - CD Servo
6 Circuit diagram - Micom controller
7 PCB - Keyboard / CD Servo
8 PCB Layout - Keyboard / CD Servo
9 PCB - Audio / Tuner
10 PCB Layout - Audio / Tuner
11 PCB - Tape
12 PCB Layout - Tape
13 Wiring diagram
14 Voltage table - Transistors and IC's
15 Explored view diagram
16 Bill of material - 1
17 Bill of material - 2
18 Bill of material - 3
19 Bill of material - 4
20 Bill of material - 5
21 Bill of material - 6
22 Bill of material - 7
23 Bill of material - 8
BLOCK DIAGRAM
9014
LPF
SP L
9014
TAPE
IC1
CD
TAPE
SP R
KIA6269
CD
CD-G
L
R
LINE OUT
AV O UT
9014
HM514400
LC7872
IC202
IC201
MIC IC2
LA324
BL3207Bl3102
9014
R
T
SW7E
T
R
SW7F
MUTE
R
L
KEY DISPLAY
IC204
LC78622N
IC5
SIA0241
IC205
LC6543
R
P
SW7A
R
P
SW7B
IC203
LA9242
LA6541
IC206
L
CASS HEAD
R
A
B
C
D
MIC
D6 IN4148
R22
10K
TOREC\TAPEPCB
R21
22K
CD TAPE
OPEN
50KA
REC ROUT
REC LOUT
GND
12345
R20
10K
SW1C
R16
VR1B
VCC
LIN
RIN
6
R19
10K
OPEN
CD TAPE
CN3
R15
50KA
R18
22K
VR1A
100
9014
R17
10K
SW1D
39K
39K
R27
R13
R14
PHONE
1
SW2
C52
10U
R67
100K
D10
IN4148
1
IN4148
D9
R66
1K5
Q5
220U
C57
IN4148
D8
10K
220U
R63
C50
C51
27K
IU
470K
R64
10
1000U
MIC VOL
VR3
R65
R62
C34
2
3
4
5
6
7
104
3K3
IN4148
C49
R45
D7
AVC
ON
OFF
R68
47K
14
13
IC2
12
11
LM324N
10
9
8
R61
47K
C56
1U
1
2
3
4
10U
LS3102
IC3
3K3
8
7
6
5
R69
C54
470P
180K
5K6
0.47U
120P
C53
R60
R59
22K
820K
C46
R58
R57
100K
150K
C47
R56
R70
2K7
0.47U
100K
R72
C55
2
3
4
R55
CN1
3
2
1
10K
10K
OUT
GND
IN
TOCDPCBOUT
R26
22K
R24
R23
100K
9014
47U
CD TAPE
47U
10K
RIN
123
C8
SW1B
R12
R11
Q1
7808
GND
C9
LIN
CN2
R2522K
Q4
R10
10K
TOCDPCBVCC
1
2
OPEN
C6
OPEN
D5
3
4
SHORT
R71
POWERLED
D11
5K6
1000U\10V
C7
GND
1
R9
VCC
2
5
BATT
6
DC 9V
Title
Size
File:
Date:
A3
668 ECHO\POWER
D:\files\A\668\668ECHO.ddb
7-May-2003
Number
7
01
DrawnBy:
Sheetof
Revision
8
01
01
CD TAPE
C1-4(0.02uF)
A
SW1A
M
+
-
M1
SW6
F1 250V1.5A
2200U\16V
C5
D2
C3
D4
C4
2
4
ACSOCKET
CASSDECKSW
AC\DC
AV230-250V
1
2
SW4
D1
D1-4(IN4001)
C1
D3
C2
1
TRANSFORMER
FUSEM20D115C
3
L1
1K
10U
C18
100U\16V
C17
68
100U\16V
470U\16V
R7
9014
220U\16V
C19
R4
C15
C12
L2
JACK
9014
R6
C23
C14
10K
102
9
IC1
10
11
SIA2206/KIA6269
12
13
14
15
16
0.47U\16V
SW5A
SW5B
8OHM
SP.R
+
B
10K
102
8
7
6
5
4
3
2
1
0.47U\16V
220
220
Q3
R2
R1
R41
100K
C27
R31
0.001U
5K6
10K
220K
Q7
C310.47U
R39
47K
C26
R32
R33
R44
220K
R43
R38
1K
R8
Q2
R5
C22
C21
10U
C20100U\16V
R3
68
C16
C13
-
C10
1000U/16V
100U\16V
470U\16V
C11
-
2K2
C25
0.47U
R28
1K2
8OHM
SP.L
+
R42
8K2
0.0068uF(M)
C32
0.0015uF(M)
C30
0.001uF(M)
C29
15K
R30
R29
1M
9014
Q6
33K
R40
C24
1U
0.47U
9014
C28
0.47U
R37
1U
560K
C
C33
33K
33K
R34
10K
1
2
3
4
R35
LS3207
IC4
C42
0.0033uF(M)
C41
0.0033UF(M)
R53
330K
C40
0.0033UF(M)
C39
0.001uF(M)
0.001uF(M)
R46
6K8
HIGH
LOW
OFF
C38
SW3
8
7
6
5
0.47U
9014
39K
39K
9014
100K
R52
R51
Q9
Q8
R36
C43
10K
0.0033uF(M)
0.0068uF(M)
0.0068uF{M}
0.0068uF{M}
D
R54
6K8
C44
C45
39K
1U
R50
C37
C36
VR2
5K
R49
C35
12K
39K
R48
R47
5
6
7
8
A
B
C
D
ERASE
1
R113
R111
R112
39K
39K
SW7D
2
RT
RT
0.0022uF(M)
10K
SW7C
R/P R
0.0022uF
C114
C113
1U
C112
R115
TR
SW7B
10K
RT
0.0022uF
0.0022uF(M)
C116
R114
47K
SW7E
R/P L
C115
4K7
TR
47U
R116
SW7A
C110
5K6
R119
39
R118
5K6
R120
33K
470P
33K
470P
1
C117
R121
C118
R122
2
3
File:
Size
Date:
A4
D:\files\A\668\668ECHO.ddb
7-May-2003
Number
02
DrawnBy:
Sheetof
4
Revision
02
01
668REC\TAPE
Titl e
220U
C101
R101
470
22U
1M
C102
R102
10K
R103
SW7H
TR
R104
1K
0.033uF(M)
10U
C103
10U
C104
C111
R110
220K
SW7F
RT
SW7G
RT
R117
220K
470P
470P
C105
IU
R109
39
47K
C107
0.033uF(M)
4K7
1K
10K
C109
R108
R107
R106
R105
1
2
3
4
5
6
7
8
C108
9
C106
47U
IC5
KA2241
CN101
1
2
3
4
5
6
LOUT
3
RECLIN
RECRIN
GND
VCC
ROUT
4
A
B
C
D
1
2
3
4
5
6
7
Size
File:
Title
Date:
A2
CD668-CD.SCH
D:\files\A\668\668ECHO.ddb
7-May-2003
Number
01
DrawnBy:
Sheetof
8
Revision
01
01
R233
68K
3300P
100P
D211
C267
3300P
FSEQ
+5V
1000P
R234
15K
C270
JP-
JP+
TGL
TOFF
TES
HFL
0.1
470
1000U
C
D
TOSANYODA11T3CN
CN207
VREFVREF
GND
SLC
LD
43
C235
12P
SLI
2K2
DGND
44
F
45
C
R247
FSC46TBC
D
B
A
654321
TE
FIN21FIN12E3F4TB5TE-6TE7TESI8SCI9TH10TA11TD-12TD13JP14TO15FD
VCC1
LDS
LDD
BH1
PH1
LF2
VR
REFI
VCC2
FSS
DRF
CE
DAT
CL
CLK
NC
DEF
48
47
C276
R258
10K
2.2/6.3
C277
0.033M
COM
E
1
10/6.3
R248
6K8
R253
R255
R254
R252
R251
R250
C253
R249
150K
82K
82K
82K
150K
0.047
0.1M
C248
82K
2SA1317
Q208
1000P
C245
C24447/6.3
C243
100/6.3
C240
DRF
10/6.3
C239
0.1
C238
C242
C241
0.01
0.01
100/6.3
C237
150K
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
R256
100
C252
C251
0.01
C250
220/6.3
2
C249
0.1
R257
10
C246
100/6.3
0.33
C247
0.01
3
VREF
AGND
RF+5V
D-GND
D+5V
FSC
4
VR
MD
F+
T-
T+
F-
16151413121110987
C255
C254
R242
2K2
330
R243
15K
0.15M
R245
0.047M
R244
100K
27K
C258
C259
C256
3300PM
R246
330P
0.033M
C257
0.1
C260
0.1
C261
16
17
FD-
18
FA
19
FA-
20
FE
21
22
23
24
25
26
27
28
29
30
31
32
FEAGND
SP
SPI
SPG
SPSPD
SLEQ
SLD
SLSL+
JP-
TOFF
TGL
JP+
33
34
LA9242M
TES
CV+
HFL
CV-
RW
37
38
35
36
39
IC203
RFSM
RFS-
41
40
42
C234
1P
R259
R260
15K
C236
18K
R282
2200PM
R261
NO RWSHORT
RW SHORT
330
1K
R262
JP212
330P
C278
JP213
10K
C227
C226
*
R266
100K
16
17
TOFF
18
TGL
19
JP+
20
PCK
21
22
23
24
25
26
27
28
29
C2F
30
31
32
330
JPPCK
FSEQ
VDD
CONT1
CONT2
CONT3
CONT4
CONT5
EMPH
C2F
DOUT
TEST3
TEST4
R268
NC
33
220/6.3
MUTEL
34
C221
LC78622E
RCHO
LCHO
RVSS
LVDD
LVSS
40
36
38
35
37
39
IC204
MUTER
RVDD
41
C219
30P
X-GND
+5V
C217
10/6.3
2K2
R270
2SA1346
Q203
330P
C215
2K2
10K
Q201
2SB764
0.1
R264
1K2
XVDD43XOUT
42
C220
0.01
2SD1936
Q205
R272
R274
XIN
44
R263
68K
C229
0.1
TEST1
TESTS
TST11
CQCK
SQOUT
XVSS46SBSY
45
2SD1936
2K2
10K
4.2M
COIN
RWC
WRQ
SBCK
SFSY
47
30P
DEFI1TAI2PDO3VSS4ISET5VDD6FR7VSS8EFMO9EFMIN10TEST211CLV+12CLV-13V/P14HFL15TES
16M
RES
FSX
EFLG
Q204
R265
680
CS
PW
48
C218
R271
R273
0.1
C228
0.1
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
EFLG
16.9344MHz
RES
X203
C216
10/6.3
R269
2K2
C214
330P
FSX
CQCK
100/6.3
C274
5
R267
680
C275
16M
100P
6
SQOUT
COIN
WRQ
RWC
SBCK
7
SFSY
PW
SBSY
A
PLAY/PAUSE
560
D202
D203
560
D204
560
D205
560
D206
560
D207
560
PLAY/PAUSE
LED201
560
D208
REPEAT
LED202
PROGRAM
LED203
R201
1K
18
17
E2
D2
16
C2
15
14
13
E1
D1
12
C1
11
10
LED1
1
2
F2
G2
A2
3
B2
4
5
6
F1
A1
G1
7
B1
8
9
SW201
SW202
STOP
FF/F-SCAN
SW203
FB/B-SCAN
SW204
REPEAT
SW205
PROGRAM
SW206
SW207
TEST
PU-IN-SW
470uF\10
C273
B
PU-IN-GND
PU-IN-SW
SPIN+
SPIN-
SM+
SM-
CN206
12345
6
F-
T+
T-
F+
SM-
SM+
SPIN-
LA6541D
IC206
SPIN+
VCC
MUTE
VREF
VIN1
VG1
OUT1+
OUT4+
OUT1-
OUT4GND
GND
GND
OUT2-
OUT3OUT2+
OUT3+
VG2
VIN2
REGOUT
REGIN15RES
VCC
VIN4
VG4
GND
GND
GND
VG3
VIN3
30
29
28
27
26
25
24
23
22
21
20
19
18
17
CD
16
1
2
3
R227
4
5
6
2K2
7
8
9
10
11
12
13
14
2K2
R226
VREF
TO
R231
0.018M
R232
1K5
R23510K
R236
R237
R238 56K
R240
10K
C268
C262
22K
0.1M
0.015M
C265
33K
1K
4U7
C264
56K
R239
R230
22K
C263
FD
3k3
R229
10k
R228
C271
*
0.22/6.3
C266
C272
1U
22/6.3
C269
R2416K8
R225
0
GMB01
D209
R203
R204
R205
R206
R207
R208
R209
R210
CN208
1
2
10
11
12
PROGRAM
DIGIT1
DIGIT2
CN210
GND2
VDD
DP
2
1
10
11
12
R202
10K
2SA1346
Q209
10K
10K
10K
10K
10K
10K
10K
10K
FORONETIMEMICON
PULLUP
SEG-F
SEG-G
SEG-E
SEG-D
SEG-B
SEG-C
SEG-A
KEY
123456789
CN209
123456789
FEDD+
FEDD-
10
12
13
14
11
91K
1
2
3
4
5
6
7
8
9
2SA1317
2SA1317
100K
R224
R223
R211
R212
R213
R214
Q206
330
Q207
330
DRF
PROG
VDD
DIGIT_2
SQOUT
DIGIT_1
COIN
SEG_H
CQCK
SEG_G
WRQ
SEG_F
RWC
SEG_E
A-MUTE
SEG_D
FEED+
SEG_C
FEED-
SEG_B
PUIN
SEG_A
LID_SW
RESET
D-MUTE
VSS
KEY_IN
TEST
OSC215OSC1
LC6543F
IC205
R215
R216
R217
R218
GMB01
R219
R220
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
D210
560
560
560
560
560
560
560
560
C225
0.022
UGND
UVDD
C224
100/6.3
0.1
100/6.3
D-GND
C223
C222
GMB01
2SC3400
Q202
C213
C212
C211
C210
8
12345
CLOSE
1
2
CN205
GND
1
2
CN203
GND
+8V
L.OUT
123
CN202
R.OUT
GND
6
CN204
SBSY
SBCK
SFSY
GND
+5V
PW
A
B
C
D
A
B
C
D
1 2 3 4 5 6 78
S1,S2
L,L : LC7861N/67
H,L : LC7860K/63
H,H : LC7868/69/681/622
+5VSBCKSFSY PWSBSY
CN201
SBCK
6
SFSY
5
PW
4
SBSY
3
2
+5V
1
GND
470uF/10
C201
C202
0.1
NTSC/M H H: 14.31818MHz OPEN
N/P1 N/P2 XIN201 XIN202
PAL/M L H: 14.30244MHz OPEN
PAL/GBIDH L L: OPEN 17.734476MHz
30P
30P
30P
30P
PAL 1
NTSC1
PAL 2
NTSC2
68/69
OPEN
68/69
OPEN
C205
C206
C204
C203
17.7344MHZ
PAL NT SC
14.31818MHZ
J205
J206
J207
J208
J201
J202
J203
J204
X202
X201
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SHORT
J211
62
64
XIN163XOUT1
S1
S2
SBCK
SFSY
PW
SBSY
VDD1
CE
DO
DI
CL
MUTE
VSS1
WE
RAS
A117A218A319A420A521A622A7
A0
C207
D201
GMB01
47/10
DEN
FSC
54
56
57
FSC55VRESET
RESET
N/P158N/P259SON60XIN261XOUT2
LC7872E
IC201
DBO
CAS
DB1
DB228DB3
OE
26
27
24
23
25
R275 22K
LC587206A-30
49
4FS02
EFLG50FSX51DEN52PAL ID53HRESET
CSYNC
YS
TEST1
VSYNC
FSCIN
LINE
TEST
VIDEO
BIAS
VDD2
VSS2
TRANS5
TRANS0
TRANS4
CDGM
TRANS3
TRANS2
CB
TRANS1
29
32
31
30
J210
262H
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
C231
10\6.3
J209
OPEN
R276 100
CDGM
LINE
L:262H
H:263H
2SC536N
Q210
Q211
2SC536N
R277 100
LC587206A-9
R280 68
220uF/6.3
100
1K
0.1
10/6.3
JACK
C208
R279
R278
C209
C230
R281
10K
20
C233
C232
OPEN
A3
Number RevisionSize
02 01
Title
CD668G-CD.SCH
A
B
Date: 7-May-2003 Sheetof
File: D:\files\A\668\668ECHO.ddb DrawnBy:
02
OPEN
A411A512A613A714A815OE16CAS17D318D419VSS
VCC
10
9
C
RAS
WE
NC
A06A17A28A3
D11D2
3
5
4
2
LC324256BP-70
IC202
7654321
8
D
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