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6
MDV434
PAINEL FRONTAL - ESQUEMA ELÉTRICO
1
M D V434( K)Fr ontBoar d
A
+5V
R 320
R 317
470
10K
Q 306
3904
R 321
R 314
18K
C 309
0. 1u
470
Q 305
Q 300
3904
R 338
3904.
1K
R 318 4. 7K
R 319
10K
C 313
R 339
1000p
1K
B
C
FROM MAIN BOARD
C O N 301
M I C
1
AG N D
2
+12V
3
- 24V
4
I R
5
D V33
6
G N D
7
D ATA
8
C S
9
C LK
10
LED -
11
PO W ER _K
12
C O N 12( 2. 0)
C 314
47p
D
+12V
- 12V
C E200
C 200
C E201
22uF
0. 1u
22uF
M I C 200
R 200
R 201
2
2
1
1. 2K
2. 2K
1
E
3
3
Q 200
3904
C 207
D 200
1uF/ 0805
1N 4148
R 204
R 203
R 202
1K
8. 2K
4. 7K
J1
0
AG N D
G N D
When have no karaoke, this inside of
circle a piece is"OPEN"
F
1
2
R 341
2. 2
+12V
AC 2
C E302
R 322
470
R 324
330
R 325
5. 6
AC 1
Q 301
3. 3uF/ 50V
3904
ZD 303
R 323
C E303
6. 2V
10K
3. 3uF/ 50V
C 305
0. 1u
Q 302
- 24V
3906
34
35
C E300
C 304
C 303
R 303
R 304
R 305
R 306
36
47uF
0. 1u
0. 1u
10K
10K
10K
51K
37
+5V
38
39
+
40
ZD 301
41
5. 1V
42
43
R 316
680
44
+12V
C S
R 300
100
C LK
R 301
100
D ATA
R 302
100
C 302
C 301
C 300
100p
100p
100p
- 24V
C 310
C E304
0. 1u
22uF/ 50V
C 201
C 205
47p
- 24V
R 210
3. 3K
- 12V
0. 1u
R 205
56K
- 12V
ZD 200
12V
L200
U 302A
2
1
1. 8uH
3
C 202
C 203
N JM 4558
C 204
N JM 4558
100p
100p
R P200
100p
5
R 208
+
10K
M I C
7
+12V
C 208
6
-
1uF/ 0805
1K
U 302B
R 207 6. 8K
R 206
C 206
47p
3. 9K
C 209 1uF/ 0805
J2
J3
0
0
AG N D
G N D
AG N D
G N D
2
3
4
VFD
VFD - 54
AC 2
- 24V
22
G 4
SEG 8
PT6312
21
G 3
SEG 7
20
G 2
SEG 6/ K6
U 301
19
G 1
SEG 5/ K5
18
VD D
SEG 4/ K4
17
LED 4
SEG 3/ K3
16
LED 3
SEG 2/ K2
15
LED 2
SEG 1/ K1
14
LED 1
VD D
+5V
D 301
13
G N D
KEY4
1N 4148
12
O SC
KEY3
R 311
2. 2K
K302
R 307
PLAY
R 312
2. 2K
10K
K303
R 308
O PEN / C LO SE
R 313
2. 2K
10K
STO P
C 311
47p
C 312
47p
K304
R 309
10K
R 310
10K
R EM 301
3
VC C
2
G N D
1
I R
R EM
C 315
47p
LED +
1
LED -
2
G N D
3
PO W ER _K
4
C O N 302
C O N 4( 2. 0)
R 209
680
3
4
5
R200
R201
R202
R203
R204
R205
R206
R207
R208
R209
R210
R300
R301
R302
R303
R304
R305
R306
R307
R308
R309
R310
R311
R312
R313
R314
R315
R316
R317
R318
R319
R320
R321
R322
R323
R324
R325
R326
R338
R339
C200
C201
C202
C203
C204
D V33
C205
R 315
C206
100 ohm
I R
C207
+
C208
C 306
C E301
0. 1u
47uF
C209
C300
C301
C302
C303
C304
R 326 470
D V33
C 316
47p
5
6
E1
C305
B3
E2
C306
D4
E1
C307
B4
E1
C308
B4
E2
C309
B1
A
E2
C310
D2
E2
C311
C4
E3
C312
C4
E3
C313
B1
E3
C314
D1
E3
C315
D4
C2
C316
E4
C2
CE200
E1
C2
CE201
E2
B3
CE300
B2
B3
CE301
D4
B3
CE302
A2
B3
CE303
A3
B4
CE304
D2
C4
J1
F1
B
C4
J2
F2
C4
J3
F2
B3
L200
E2
B3
Q200
E1
C3
Q300
B2
B1
Q301
B2
D5
Q302
B2
B2
Q305
B1
A1
Q306
A1
B1
D200
E1
B2
D301
B4
A2
D302
B4
ZD200
E3
A2
A2
ZD301
B2
C
A2
ZD303
A2
A2
U302A
E2
A3
U302B
E3
E4
RP200
E2
B1
MIC200
E1
B1
K302
B4
E1
K303
C4
E2
K304
C4
E2
K305
B4
E2
K306
C4
E2
U301
B3
CON301
C1
E2
CON302
E4
E3
REM301
D4
E1
VFD
A3
E2
D
F3
C3
C3
C3
B3
B2
E
F
6
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