AY
BA
BC
AZ
BB
RXD-A850DV/DV50/DV70
Y39-3820-11
10
9
8
7
6
5
4
3
2
1
-12V(A)
-12V(A)
DKGND
DKGND
+12V(A)
+12V(A)
+12V(M)
+12V(M)
AGND
AGND
4
3
2
1
H.P(L)
H.P(R)
H.P DET
GND
1
2
3
4
5
6
7
8
9
10
11
VDD1
VDD1
VDD1
VEE1
VEE1
RLY B+
VEE2
VEE2
DC DET
VDD2
VDD2
1
2
3
4
5
6
DVD FL
AGND
DVD FR
AGND
MIC
MIC DET
6.8K
R213
1K
R21
1
1K
R210
6.8K
R209
220P
C202
R208
6.8K
6.8K
R222
2.2K
R290
C203
220P
6.8K
R215
1.5K
R217
6.8K
R221
6.8K
R219
1.5K
R218
1K
R216
1K
R220
6.8K
R214
2.2K
R212
R203 39
R204 39
R206 39
R205 39
680 1W
R201
10 1W
R207
0.1
C201
0.1
C255
0.01
C253
1K
R346
1K
R347
1M
R345
100
R349
100
R348
L201 0.7uH
1W
1W
R317 39
R316 39
R314 39
R315 39
L202 0.7uH
680 1W
R202
10 1W
R318
+12VA
+12VM
12VA
5
6
1.8K
R487
1.8K
R486
3.3K
R488
3.3K
R489
0.1
C231
0.1
C254
R313
1.5K
R312
1.5K
R31
1
1.5K
1
2
5
4
3
2
1
MIC DET
+12V
-12V
MIC
AGND
4
3
2
1
H.P(L)
H.P(R)
H.P
DET
GND
1000P
C248
1000P
C249
10
R362
R363
10
6
8
7
5
1
2
3
4
R333 8.2K
C239 470P
+
C240
10u50
1K
R334
C246
0.022
C1
2.2K
R337
C242 680P
R338 10K
R336 100K
R335 100K
0.47u50
+
C241
0.47u50
+
C238
20K(B)
VR201
+
C237
0.47u50
R332
1K
100K
R331
0.1u50
+
C234
100K
R330
220
R350
220
R351
+
C236
10u50
+
C235
10u50
+12V
+12V
12V
+12V
VR201
1000P
1
9
8
2
3
7
6
5
4
6
5
4
2
3
7
8
9
1
+B
+B
+B
+12VA
B
B
B
B
+B
+B
RGND
AGND
GND
AGND
AGND
GND
13
15
14
12
11
LGND
GND
GND
GND
GND
10
9
8
7
6
LGND
RGND
LGND
RGND
5
4
3
2
1
B
+B
CP202
CP203
CP204
CP403
Q202
Q201
D202
Q204
Q203
D205
D201
D203
D204
D210
Q246
Q247
CN209
CN201
HEADPHONE
MIC INPUT
JK202
JK201
IC201 (2/2)
IC201
D230
D231
(1/2)
D241
D240
AMPLIFIER
MIC
VOLUME
MIC
CP205
4/4
CN604
POWER-
POWER-
CN603
4/4
4/4
CN616
POWER-
4/4
CN602
POWER-
ONLY
M,M2 TYPE
: BA4558
IC201
D230,231,240,
: 1N4148
241
MAIN BOARD
MIC AMP SECTION
K
L
J
I
RXD-A850DV/DV50/DV70
(3/4)
0V
0V
0V
-11.0V
0V
0V
0V
11.0V
5.0V
48.0V
6.0V
48.0V
12.0V
12.0V
-5.0V
-48.0V
-6.0V
-48.0V
-12.0V
-12.0V
0V
0V
0V
-11.0V
11.0V
DV70 ONLY
BD-4
BD-5
BH-2
BD-3
CAUTION:
For continued safety, replace safe-
ty critical components only with manufacturer's
recommended parts (refer to parts list).
indi-
cates safety critical components. For continued
protection against risk of fire, replace only with
same type and rating fuse(s). To reduce the
risk of electric shock, leakage-current or resis-
tance measurements shall be carried out
(exposed parts are acceptably insulated from
the supply circuit) before the appliance is
returned to the customer.
The DC voltage is an actual reading measured
with a high impedance type voltmeter with no
signal input. The measurement value may vary
depending on the measuring instruments used
or on the product.
