12
3
1
23
4
5
6
A
B
C
D
E
A
B
C
D
E
F
1 2
3
U
403
H
S0038A
2
K
403
K
401
K
402
D
401
1N
4148
KE
Y
3
KE
Y
2
KE
Y
1
S9
C
403
104
R
415
100
IR
VCC
TC
402
100u
F/
16V
C
402
104
C
401 104
LE
D
ST
LE
D
C
K
LE
D
A
T
VCC
R
401
51K
R
404
10K
R
402
10K
R
403
10K
IR
OS
C
1
DOUT
2
DI
N
3
CL
K
4
STB
5
K1
6
K2
7
K3
8
VDD
9
NC
13
SEG
1/
K
S1
10
SEG
2/
K
S2
11
SEG
3/
K
S3
12
SEG
4/
K
S4
14
SEG
5/
K
S5
15
GR
6
23
SEG
6/
K
S6
16
SEG
7/
K
S7
17
SEG
8/
K
S8
18
SEG
9/
K
S9
19
SE
G
10/K
S10
20
SEG
11
21
SE
G
12/G
R
7
22
VDD
25
GN
D
26
GR
5
24
GR
4
27
GR
3
28
GN
D
29
GR
2
30
GR
1
31
GN
D
32
U
401
PT
6961
LE
D
A
T
LE
D
C
K
LE
D
ST
KE
Y
1
KE
Y
2
KE
Y
3
S1
S2 S3 S4 S5
S6
S7
S8
G1 G2
G3 G4
G5 G6 G7
VCC
VCC
VCC
TC
401
100u
F/
16V
S9
G1
1
G2
2
G3
3
G4
4
G5
5
G6
6
G7
7
S1
8
S2
9
S3
10
S4
11
S5
12
S6
13
S7
14
S8
15
S9
16
LED
401
ZD
C
6-
2102Y
G
B
-A
G1 G2 G3 G4 G5 G6 G7 S1 S2 S3 S4 S5 S6 S7 S8 S9
2 3 4
1
5 6
X
S401
XS
6
Q
402
8050
R
405
10K
R
406
470R
VCC
1
2
LE
D
402
R
407
0R
LE
D
B
LE
D
B
LE
D
A
1
2
LE
D
403
R
419
270R
1
2
LE
D
404
VCC
R
420
1K
LE
D
A
Q
401
8050
1
2
R
421
330R
1
2
R
422
330R
FRONT SCHEMATIC DIAGRAM
26
9. SCHEMATIC & PCB WIRING DIAGRAM
Summary of Contents for DT9904S
Page 1: ...SERVICE MANUAL DT9904S...
Page 4: ...3 7 9 2...
Page 12: ...7 MPEG BOARD CHECK WAVEFORM 7 1 27MHz WAVEFORM DIAGRAM 7 2 IC5L0380R PIN 2 WAVEFORM DIAGRAM 10...
Page 29: ...FRONT SCHEMATIC DIAGRAM 27...
Page 31: ...POWER BOARD SCHEMATIC DIAGRAM 29...
Page 33: ...OK SCHEMATIC DIAGRAM 31...
Page 35: ...OUTPUT BOARD SCHEMATIC DIAGRAM 33...
Page 40: ...MIAN SCHEMATIC DIAGRAM 38...
Page 47: ...11 APPENDIX AM FM Tuner Specificadtion 45...
Page 48: ...46...
Page 49: ...47...
Page 50: ...48...
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