![background image](http://html1.mh-extra.com/html/onkyo/dt9904s/dt9904s_service-manual_1636884037.webp)
L232
FB
SM
T
L230
FB
SM
T
L231
FB
SM
T
R
230
4.7K
C
262
47p
F
IR
VS
CK
VS
TB
VS
DA
2 3 4
1
X
S202
XS
04
(DNS
)
DV3
3
RXD TX
D
GN
D
C
267
104
TC
210
47u
F/
16V
C
2163
104
C
2166
104
SD
33
L226
FB
DV3
3
C
278
102
TC
217
100u
F/
16V
V
D
201
1N
4148
R
252
10K
R
254
1K
R
256
33R
5
6
U
205C
HCU0
4
URS
T#
DV3
3
DC/
N
C
1
RS
T_
/N
C
2
WP
/R
ST
_
3
VS
S
4
VCC
8
RS
T/
W
P
7
SC
L
6
SD
A
5
U
202
A
T24C
16X
4050
SD
A
SC
L
C
259
104
DV3
3
R
259
680R
R
260
680R
C
263
47p
F
C
264
47p
F
C
265
47p
F
VCC
A6
19
A1
7
17
RY/
B
Y
15
A1
8
16
NC
14
A1
2
4
NC
10
NC
13
A9
7
A1
5
1
A1
4
2
A1
3
3
A1
1
5
A1
0
6
A8
8
A1
9
9
WE
11
RE
SE
T
12
A5
20
A4
21
A3
22
A7
18
DQ8
30
DQ9
32
DQ1
0
34
DQ2
33
DQ3
35
D
Q
15/A
-1
45
DQ1
2
39
DQ1
1
36
DQ6
42
A1
6
48
BYT
E
47
Vs
s
46
DQ7
44
DQ1
4
43
DQ1
3
41
DQ5
40
DQ4
38
Vc
c
37
DQ0
29
OE
28
Vs
s
27
DQ1
31
A2
23
A1
24
CE
26
A0
25
U
214
8M
_F
LA
SH
(T
SO
P)
A1
5
A1
4
A1
3
A1
2
A1
1
A1
0
A9
A1
8
A7 A6 A5 A4 A3 A2
A1
6
GN
D
A0 AD
7
AD
14
AD
6
AD
13
AD
5
AD
12
AD
4
VD AD
11
AD
3
AD
10
AD
2
AD
9
AD
1
AD
8
AD
0
DRD# GN
D
DCE
#
A1
A8
U
PA
[20..0]
UP
D[
15
..0
]
R
241
4.7K
(D
N
S)
VP
R240
4.7K
R239
4.7K
R238
4.7K
VD
C
279
104
A1
7
A1
9
TC
237
47u
F/
16V
R
255
0R
VD
DV3
3
AA2
0
L204
FB(
DNS
)
VCC
R
253
0R
(DNS
)
L233
FB
SM
T
L229 FB
SM
T
C
266
47p
F
2
3
4
1
5
6
7
X
S201
XS
07
GN
D
C
260
102(D
N
S)
C
261
102(D
N
S)
1
2
U
205A
HCU0
4
X
201
27M
H
z
3
4
7
14
U
205B
HCU0
4
R
246
100K
C
275
27p
F
C
276
27p
F
R
249
10R
(D
N
S)
27M
H
Z
C
274
104
C
277
10p
F(
D
N
S)
R
245
0R
(DNS
)
R
247
0R
(DNS
)
XI
R
244
0R
XO
XT
A
LI
R
248
0R
12
13
U
205F
HCU0
4
10
11
U
205E
HCU0
4
A
SPD
IF
IE
C
958
R
250
0R
(DNS
)
R
251
0R
R
280
150R
C
2105
101
C
2104
47p
F
L215 1.8u
H
VG
ND
R
276
150R
C
2102
101
C
2101
47p
F
L214 1.8u
H
VG
ND
R
261
150R
C
290
101
C
289
47p
F
L210 1.8u
H
VG
ND
R
274
150R
C
293 101
C
292
47p
F
L211 1.8u
H
VG
ND
R
270
150R
C
296
101
C
295
47p
F
L212 1.8u
H
VG
ND
R
273
150R
C
299
101
C
298
47p
F
L213 1.8u
H
VG
ND
L243 0R
L244 0R
L245 0R
L246
0R
L247 0R
L248 0R
Y3
Y2
Y1
Y4
Y5
Y6
A0
23
A1
24
A2
25
A3
26
A4
29
A5
30
A6
31
A7
32
A8
33
A9
34
A
10/A
P
22
A1
1
35
BA
0/
A
13
20
BA
1/
A
12
21
CL
K
38
CK
E
37
/C
S
19
/R
A
S
18
/C
A
S
17
/W
E
16
DQML
15
DQMH
39
NC
36
NC
40
VS
S
54
VS
S
41
VS
S
28
DQ0
2
DQ1
4
DQ2
5
DQ3
7
DQ4
8
DQ5
10
DQ6
11
DQ7
13
DQ8
42
DQ9
44
DQ1
0
45
DQ1
1
47
DQ1
2
48
DQ1
3
50
DQ1
4
51
DQ1
5
53
VCC
1
VCC
14
VCC
27
VCCQ
3
VCCQ
9
VCCQ
43
VCCQ
49
V
SSQ
6
V
SSQ
12
V
SSQ
46
V
SSQ
52
U
211
SD
R
A
M
64M
DMA
0
DMA
1
DMA
2
DMA
3
DMA
4
DMA
5
DMA
6
DMA
7
DMA
8
DMA
9
DMA
10
MA
11
BA
0
#B
A
1
SD
C
LK
SD
C
K
E
DCS
#
DRA
S#
DCA
S#
DW
E#
DQM0 DQM1
DQ0 DQ1 DQ2
DQ4 DQ5 DQ6 DQ7 DQ8 DQ9 DQ1
0
DQ1
1
DQ1
2
DQ1
3
DQ1
4
DQ1
5
DQ3
SD
33
SD
33
1
2
R
231
33R
R
232
33R
DMA11
BA1
C
2164
104
L218
FB
SM
T
L219
FB
SM
T
L221
FB
L220
FB
L222
FB
L223
FB
VOI
CE
-DE
T
OK
A
GN
D
C
268
104
C
269
104
C
270
104
C
271
104
TC
208
220u
F/
16V
TC
207
220u
F/
16V
+9
V
-9
V
DV3
3
GN
D
AV
C
C
VCC
C
272
104
TC
213
220u
F/
16V
L227 FB
D
V
33A
2 3 4
1
5 6
8 9 10
7
11 12 13
X
S203
XS
13
L224
FB
L225
1K
M
U
TEA
A
STB
M
U
TE_
D
A
C
IN
1
GND
2
OUT
3
U
208
B
A
033F
P(
D
N
S)
VCC
DV3
3
L228
FB
V
D
202
1N
4004
V
D
203
1N
4004
IN
3
GND
1
OUT
2
U
209
LM
1117M
P-
1.8(D
N
S)
C
273
104
TC
209
220u
F/
16V
R
242
3.3K
R
243
1.2K
V1
8
DV3
3
VCC
AA2
1
R2140
0R
R257
0R(DNS
)
R258
0R(DNS
)
A21
A20
R
264
33R
R
263
33R
R
265
33R
R
266
33R
R
267
33R
R
2162
33R
DCL
K
DCK
E
CS
#
RA
S#
CA
S#
WE
#
L217
FB
A5
V
V
DW
R#
TC
245
220u
F/
16V
C
2161
104
FS
0
C
2158
27p
F(
D
N
S)
L249 2.
7u
H(
DNS
)
C
2168
104
C
2169
104
C
2170
104
C
2171
104
L209
FB
R
2159
0R
(DNS
)
DV3
3
A5
V
V
VG
ND
A5
V
V
VI
DE
O_
U
VI
DE
O_
V
A5
V
V
VI
DE
O_
C
VG
ND
VI
DE
O_
Y
A5
V
V
VG
ND
VI
DE
O_
COMP
A5
V
V
VI
DE
O_
Y1
VG
ND
V
D
210
1N
4148
V
D
211
1N
4148
V
D
212
1N
4148
V
D
213
1N
4148
V
D
214
1N
4148
V
D
215
1N
4148
V
D
216
1N
4148
V
D
217
1N
4148
V
D
218
1N
4148
V
D
219
1N
4148
V
D
220
1N
4148
V
D
221
1N
4148
A5
V
V
VG
ND
VG
ND
C
2152 104
C
2151 104
C
2150 104
TC
203
10u
F/
16V
A5
V
V
VG
ND
R
222
0R
(DNS
)
XI
URS
T#
Q
204
9016
VCC
AGN
DVG
ND
LF
E
Cc
SR
SL
Rt
VI
DE
O_
COMP
VI
DE
O_
U
VI
DE
O_
V
VI
DE
O_
C
VI
DE
O_
Y
VCC
IE
C
958
HS
YNC#
VS
YNC#
R
234
0R
(DNS
)
R
235
0R
AGN
D
FS
1
R
236
0R
(D
N
S)
R
237 0R
+9
V
AGN
D
VI
DE
O_
Y1
R
233
150R
TL
TR
Lt
2 3 4
1
5 6
8 9 10
7
11 12
14 15 16
13
17 18
20 21 22
19
23 24 25 26
28
27
29 30
X
S204
XS
30
MIAN SCHEMATIC DIAGRAM
35
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...
Page 51: ...49...
Page 52: ...50...
Page 53: ...51...
Page 54: ...52...
Page 55: ...53...
Page 56: ...54...
Page 57: ...55...
Page 58: ...56...
Page 59: ...57...
Page 60: ...58...
Page 61: ...59...
Page 62: ...60...
Page 63: ...61...
Page 64: ...62...
Page 65: ...63...
Page 66: ...64...
Page 67: ...65...
Page 68: ...66...
Page 69: ...67...