Yamaha dsp-ax3800, Service Manual, Page: 131 / 189

W272
W276B
W260B
W264B
W262B
W250B
W255B
W265B
W274A
W250A W251A
W263B
W254B
W258B
W251B
W259B
W257B
W261B
W261D
W264A
W263A
W262A
W265A
W252A W254A W255A W256A W257A W258A
W253A
CB252
W253D
W253B
W261C
W261A
W252D
W252B
W256B
W276A
CB253
W259A W260A
W253C W252C
W273
W274B W271
A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
RX-V3800/DSP-AX3800
131
★
All voltages are measured with a 10M
Ω
/V DC electronic voltmeter.
★
Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
MAIN
AC74.8
-18.3
-18.3
-18.3
-18.3
0
0
0
0
0 0
0
-63.3
-0.5
-0.5
-1.0
1.1
1.1 -1.0
-1.0
-1.0
-61.6
-61.1
-60.5
61.4 1.1
60.8 60.8
61.3
61.2
61.7
61.3
61.2
61.3
0 0
-60.5
-61.6
-0.6 -0.6
-0.1
61.4
-61.1
-0.4
-63.3
0
63.0
63.4 0
0.6
63.4
0.6
1.1
0 0
0
0
0
0
-0.5
-0.5
1.0
1.0
61.3
61.7
61.3
61.2
61.3
-0.6
-0.6
-0.1
-0.6
-61.1
0 0
1.1
60.8
60.8
61.3
61.3
61.2
-60.5
-1.0
-61.1
-60.5
-61.1
-61.6
-1.0
-1.0
1.0
-63.3
-63.3
0
0
63.0
63.4
63.4
0.5
1.0
-0.4
0 0 0
63.3
63.6 -63.5
-63.5
63.6
0
0 0
0.5
0.5 0.5
0.5
1.1
1.1
1.1
-0.4
-1.0
-1.0
-61.1
-60.5
-61.1
61.3 1.1
60.8
60.8 61.3
61.3
61.2
61.7
61.3
61.3
61.2
0 0
-0.6
-0.6
-60.5
-61.1
63.4 0
63.3
-0.6
-0.1
-61.7
-1.0
0
0 0
0
63.2
0
0
0 0
-63.4
0 0
0.5
63.6
63.6
0.5 -0.5
-0.5
-63.4
1.1
1.1
-0.4
-1.0
-61.1
-61.1
-61.6
1.1
61.3
61.9
61.3
61.3
61.2
0 0
-60.5
-0.6
-0.6
0
-0.6
-61.1
61.3
61.3
61.2
60.8
60.8
1.1
-1.0
-1.0
-60.5
0
-63.5 63.6
AC61.7
AC93.2
0
-29.9
-62.4
-29.9
-29.9
-19.6
0 0 0 0
63.1 0
0 0
0
0
0.6
63.4
63.4
0.6
1.1
0
-0.5
-0.5
-1.0 1.1
1.1
-1.0
-1.0
-60.5
-61.6
-61.1
61.4
60.8
61.7
61.4 61.4
61.2
0 0
-60.5
-0.6
-0.6
-0.6
-61.1
0.1
60.8
61.4
61.2
1.1
-0.4
-1.0
-63.3
-63.3
0
63.1
63.2 0.1
0.6 -0.4
0.1
-63.1
-63.1
-0.4
-0.9
1.1
0.6
63.2
1.1
-0.9
-0.9
-60.4
-61.1
-61.6
-61.0
1.1
61.3 1.2
60.8
60.8
61.3
61.3
61.3
61.7
-61.3
61.3
61.3
0 0
-60.5
-0.6
0.1
-0.6
-61.1
-0.9
-0.3
0
0 0 0
0
63.2
0
0 0 0
-63.1
-63.1
0.1 0.1
0.6
0.6
1.1
63.2
63.2
-0.4
-0.4
1.1
61.3
1.1
61.3
61.3
-61.4
61.7
61.3
61.3
0.1
-0.6
-0.6
-0.6
-60.6
0 0 0
-0.6 -61.1
61.4
60.8
60.8
1.2
-0.9
-0.9
-61.0
-61.6
-61.2
-60.6
-0.3
-0.9
-0.9
-19.1
-19.6
-19.1
-19.6
-19.1
-19.6 -19.6 -19.6
5.8 0 5.5
-62.4
4.0
44.3
61.8 62.8
62.8
62.3
62.3
62.4
62.3
0.7 0.1
0.1 -0.5
62.1
62.3
4.4
4.0
0 -61.9
-61.9
-61.7
-62.2
-62.9
-62.9
-61.4
-61.9
-62.2
-0.5
4.0
4.0
0
SURROUND L
SURROUND
BACK L
CENTER
FRONT L
CENTER FRONT L SURROUND L
SURROUND
BACK L
1000P
1000P
MAIN (1)
MAIN (2)
MAIN (4)
MAIN (3)
T
o
PO
WER
TRANSFORMER
to PO
WER (3)_CB21
P
age 132
H2
to FUNCTION (2)_CB303
Page 128 M5
to POWER (3)_CB19
Page 132 H8