Power Amp.section - Onkyo TX-DS898 Service Manual

A B
SCHEMATIC DIAGRAM 5

Power amp.section

N A A F - 7 2 5 1
1
S L
C 5 1 2 3
4 7 / 1 0 0
R 5 0 0 3
1 K
C 5 0 1 3
2 2 1 K
- B 1
+ B 1
E C 5 1 3 3
4 7 / 1 0 0
E
E
C 5 0 5 3
2
1 0 / 5 0
S R
C 5 1 2 4
4 7 / 1 0 0
R 5 0 0 4
1 K
C 5 0 1 4
2 2 1 K
C 5 1 3 4
4 7 / 1 0 0
3
C 5 0 5 4
1 0 / 5 0
S B L
C 5 1 2 5
4 7 / 1 0 0
R 5 0 0 5
1 K
C 5 0 1 5
2 2 1 K
C 5 1 3 5
4
4 7 / 1 0 0
C 5 0 5 5
1 0 / 5 0
S B R
C 5 1 2 6
4 7 / 1 0 0
R 5 0 0 6
1 K
C 5 0 1 6
5
2 2 1 K
C 5 1 3 6
4 7 / 1 0 0
C 5 0 5 6
1 0 / 5 0
C
R 5 3 0 3
R 5 1 4 3 R 5 1 3 3 R 5 1 8 3 5 6 . 2 V
1 0 0( 1 / 2 W )
R 5 1 1 3 R 5 1 2 3 8 2 0 8 2 0 3 3
2 . 2 K 2 . 2 K ( 1 / 2 W ) ( 1 / 2 W ) ( 1 / 2 W ) 5 5 . 4 V
R 5 0 7 3 5 4 . 8 V
5 4 . 8 V
5 4 . 2 V
1 0 0 K
Q 5 0 5 3
Q 5 0 4 3
1 . 2 V
5 4 . 2 V Q 5 0 3 3
C 5 0 7 3
C 5 1 1 3
R 5 2 1 3
1 0 / 1 0 0
0 5 0 D
1 8 K
- 3 8 . 6 V
Q 5 0 0 3 Q 5 0 1 3
C 5 0 0 3
- 3 8 . 9 V
R 5 0 9 3
4 7 / 5 0
1 . 8 K R 5 1 5 3
R 5 2 8 3 1 0 K
R 5 0 2 3
R 5 2 5 3
R 5 0 1 3
R 5 0 4 3 1 0 K ( 1 / 2 W )
3 3 0
C 5 0 9 3 C 5 1 0 3 5 6 K
( 1 / 2 W )
R 5 0 3 3
1 2 0 4 7 / 5 0 1 0 1 K
5 6 K C 5 0 4 3
1 2 0
- 0 . 9 V
1 0 0 / 1 6 C 5 0 8 3 R 5 2 2 3
2 2 / 6 3 1 8 K
- 1 . 2 V
R 5 0 5 3
Q 5 0 8 3
5 . 6 K
Q 5 0 2 3
- 5 4 . 8 V
5 0 . 6 V
- 5 5 . 4 V
- 5 1 . 2 V
R 5 1 7 3
R 5 2 9 3 R 5 1 6 3
8 2 0
1 0 0 K D 5 0 0 3 R 5 0 6 3 1 K R 5 3 3 3
- 5 6 . 2 V
( 1 / 2 W )
M T Z J 5 . 6 B 2 . 7 K ( 1 / 2 W ) 1 0 0( 1 / 2 W )
R 5 3 0 4 5 6 . 2 V
R 5 1 4 4 R 5 1 3 4 R 5 1 8 4
1 0 0( 1 / 2 W )
R 5 1 1 4 R 5 1 2 4 8 2 0 8 2 0 3 3
2 . 2 K 2 . 2 K ( 1 / 2 W ) ( 1 / 2 W ) ( 1 / 2 W ) 5 5 . 4 V
R 5 0 7 4 5 4 . 8 V
5 4 . 2 V
5 4 . 8 V
1 0 0 K
Q 5 0 5 4
Q 5 0 4 4
1 . 2 V
5 4 . 2 V Q 5 0 3 4
C 5 0 7 4 C 5 1 1 4
R 5 2 1 4
1 0 / 1 0 0 0 5 0 D
1 8 K
Q 5 0 0 4 Q 5 0 1 4
- 3 8 . 6 V
C 5 0 0 4
- 3 8 . 9 V
R 5 0 9 4
4 7 / 5 0
1 . 8 K R 5 1 5 4
R 5 2 8 4 1 0 K
R 5 0 2 4
R 5 0 1 4 R 5 2 5 4
1 0 K ( 1 / 2 W )
3 3 0
R 5 0 4 4 C 5 1 0 4 5 6 K
C 5 0 9 4
R 5 0 3 4 ( 1 / 2 W )
1 2 0 4 7 / 5 0 1 0 1 K
1 2 0
5 6 K C 5 0 4 4
- 0 . 9 V
1 0 0 / 1 6 C 5 0 8 4 R 5 2 2 4
2 2 / 6 3 1 8 K - 1 . 2 V
R 5 0 5 4
Q 5 0 8 4
5 . 6 K
5 0 . 6 V Q 5 0 2 4 - 5 4 . 8 V
- 5 5 . 4 V
- 5 1 . 2 V R 5 1 7 4
R 5 2 9 4 R 5 1 6 4
8 2 0
1 0 0 K D 5 0 0 4 R 5 0 6 4 1 K R 5 3 3 4
- 5 6 . 2 V
( 1 / 2 W )
M T Z J 5 . 6 B 2 . 7 K ( 1 / 2 W ) 1 0 0( 1 / 2 W )
R 5 3 0 5
5 6 . 2 V
R 5 1 4 5 R 5 1 3 5 R 5 1 8 5
1 0 0 ( 1 / 2 W )
R 5 1 1 5 R 5 1 2 5 8 2 0 8 2 0 3 3
2 . 2 K 2 . 2 K ( 1 / 2 W ) ( 1 / 2 W ) ( 1 / 2 W ) 5 5 . 4 V
R 5 0 7 5 5 4 . 2 V 5 4 . 8 V
5 4 . 8 V
1 0 0 K
Q 5 0 5 5
Q 5 0 4 5
1 . 2 V
5 4 . 2 V Q 5 0 3 5
C 5 1 1 5
C 5 0 7 5 R 5 2 1 5
0 5 0 D
1 0 / 1 0 0 1 8 K R 5 2 5 5
- 3 8 . 6 V
Q 5 0 0 5 Q 5 0 1 5
C 5 0 0 5 5 6 K
- 3 8 . 9 V
R 5 0 9 5
4 7 / 5 0
1 . 8 K R 5 1 5 5
R 5 2 8 5 1 0 K
R 5 0 2 5 R 5 2 6 5
R 5 0 1 5
1 0 K ( 1 / 2 W )
3 3 0
R 5 0 4 5 C 5 0 9 5 C 5 1 0 5
( 1 / 2 W )
R 5 0 3 5
1 2 0 4 7 / 5 0 1 0 1 K
5 6 K C 5 0 4 5
1 2 0
- 0 . 9 V 1 0 0 / 1 6 C 5 0 8 5 R 5 2 2 5
2 2 / 6 3 1 8 K
- 1 . 2 V
R 5 0 5 5
Q 5 0 8 5
5 . 6 K - 5 4 . 8 V
5 0 . 6 V
Q 5 0 2 5
( - 5 3 . 8 V ) - 5 5 . 4 V
( 4 9 . 6 V )
- 5 1 . 2 V ( - 5 4 . 4 V )
( - 5 0 . 2 V ) R 5 1 7 5
R 5 2 9 5 R 5 1 6 5
- 5 6 . 2 V
8 2 0
1 0 0 K D 5 0 0 5 R 5 0 6 5 1 K R 5 3 3 5
( - 5 5 . 2 V )
( 1 / 2 W )
M T Z J 5 . 6 B 2 . 7 K ( 1 / 2 W ) 1 0 0( 1 / 2 W )
R 5 3 0 6
R 5 1 4 6 R 5 1 3 6 R 5 1 8 6 5 6 . 2 V
1 0 0 ( 1 / 2 W )
R 5 1 1 6 R 5 1 2 6 8 2 0 8 2 0 3 3
2 . 2 K 2 . 2 K ( 1 / 2 W ) ( 1 / 2 W ) ( 1 / 2 W ) 5 5 . 4 V
R 5 0 7 6 5 4 . 8 V
5 4 . 2 V
5 4 . 8 V
1 0 0 K
Q 5 0 5 6
Q 5 0 4 6
5 4 . 2 V Q 5 0 3 6 1 . 2 V
C 5 0 7 6 C 5 1 1 6
R 5 2 1 6
1 0 / 1 0 0 0 5 0 D
Q 5 0 1 6 1 8 K
- 3 8 . 6 V
Q 5 0 0 6 - 3 8 . 9 V
C 5 0 0 6
R 5 0 9 6
4 7 / 5 0
R 5 0 2 6
1 . 8 K R 5 1 5 6
R 5 2 8 6 1 0 K
3 3 0
R 5 0 1 6 R 5 2 5 6
1 0 K ( 1 / 2 W )
5 6 K
R 5 0 3 6 R 5 0 4 6 C 5 0 9 6 C 5 1 0 6
( 1 / 2 W )
5 6 K
1 2 0 1 2 0 4 7 / 5 0 1 0 1 K
C 5 0 4 6
- 0 . 9 V
1 0 0 / 1 6 C 5 0 8 6 R 5 2 2 6
2 2 / 6 3 1 8 K
- 1 . 2 V
R 5 0 5 6
Q 5 0 8 6
5 . 6 K
5 0 . 6 V
Q 5 0 2 6 - 5 4 . 8 V
- 5 5 . 4 V
R 5 2 9 6 - 5 1 . 2 V R 5 1 7 6
R 5 1 6 6
8 2 0
1 0 0 K D 5 0 0 6 R 5 0 6 6 1 K R 5 3 3 6
- 5 6 . 2 V
( 1 / 2 W )
M T Z J 5 . 6 B 2 . 7 K ( 1 / 2 W ) 1 0 0 ( 1 / 2 W )
D E
N A A F - 7 2 3 2
R 5 2 3 3
1 5
( 1 / 2 W )
N F
N F
B +
B -
- B 1
+ B 1
R 5 2 4 3
1 5
( 1 / 2 W )
R 5 2 3 4
1 5
( 1 / 2 W )
N F
N F
B +
B -
R 5 2 4 4
1 5
( 1 / 2 W )
R 5 2 3 5
1 5
( 1 / 2 W )
N F
N F
B +
B -
R 5 2 4 5
1 5
( 1 / 2 W )
R 5 2 3 6
1 5
( 1 / 2 W )
N F
N F
B +
B -
R 5 2 4 6
1 5
( 1 / 2 W )
F G
L
R 5 3 0 0
R 5 1 4 0 R 5 1 3 0 R 5 1 8 0
1 0 0( 1 / 2 W )
R 5 1 1 0 R 5 1 2 0 8 2 0 8 2 0 3 3
2 . 2 K 2 . 2 K ( 1 / 2 W ) ( 1 / 2 W ) ( 1 / 2 W ) 5 5 . 4 V
R 5 0 7 0 5 4 . 8 V
5 4 . 8 V
5 4 . 2 V
1 0 0 K ( 5 3 . 8 V )
Q 5 0 5 0
Q 5 0 4 0
R 5 2 1 0
5 4 . 2 V Q 5 0 3 0
C 5 1 2 0 C 5 0 7 0
C 5 1 1 0
1 0 0 / 1 0 0
1 0 / 1 0 0
0 5 0 D
1 8 K
- 3 8 . 9 V - 3 8 . 6 V
Q 5 0 0 0 Q 5 0 1 0
C 5 0 0 0
R 5 0 0 0
R 5 0 9 0
1 0 0 / 6 3
1 K
1 . 8 K R 5 1 5 0
R 5 2 8 0 1 0 K
R 5 0 2 0
C 5 0 1 0 R 5 0 1 0
1 0 K ( 1 / 2 W )
3 3 0 R 5 0 4 0
C 5 0 9 0 C 5 1 0 0
( 1 / 2 W )
1 0 1 K R 5 0 3 0
3 3 0 4 7 / 5 0 1 0 1 K
5 6 K C 5 0 4 0
3 3 0
- 0 . 9 V
2 2 0 / 1 6 C 5 0 8 0 R 5 2 2 0
2 2 / 6 3 1 8 K
C 5 1 3 0 R 5 0 5 0
Q 5 0 8 0
1 0 0 / 1 0 0 5 . 6 K - 5 4 . 8 V
5 0 . 6 V
Q 5 0 2 0
( 4 9 . 6 V )
- 5 1 . 2 V - 5 5 . 4 V
R 5 2 9 0 ( - 5 0 . 2 V ) R 5 1 7 0
C 5 0 5 0 R 5 1 6 0
8 2 0
1 0 / 5 0 1 0 0 K D 5 0 0 0 R 5 0 6 0 1 K R 5 3 3 0
( 1 / 2 W )
M T Z J 5 . 6 B 2 . 7 K ( 1 / 2 W ) 1 0 0( 1 / 2 W )
R
R 5 3 0 1
R 5 1 4 1 R 5 1 3 1 R 5 1 8 1
1 0 0( 1 / 2 W )
R 5 1 1 1 R 5 1 2 1 8 2 0 8 2 0 3 3
2 . 2 K 2 . 2 K ( 1 / 2 W ) ( 1 / 2 W ) ( 1 / 2 W ) 5 5 . 4 V
R 5 0 7 1 5 4 . 8 V
5 4 . 2 V 5 4 . 8 V
1 0 0 K
Q 5 0 5 1
Q 5 0 4 1
Q 5 0 3 1
5 4 . 2 V
C 5 1 2 1
C 5 1 1 1
C 5 0 7 1 R 5 2 1 1
1 0 0 / 1 0 0
- 3 8 . 6 V 0 5 0 D
1 0 / 1 0 0 1 8 K
Q 5 0 0 1 Q 5 0 1 1 ( - 3 7 . 6 V )
C 5 0 0 1 - 3 8 . 9 V
R 5 0 0 1
R 5 0 9 1
1 0 0 / 6 3
1 K
1 . 8 K R 5 1 5 1
R 5 2 8 1 1 0 K
C 5 0 1 1 R 5 0 2 1
R 5 0 1 1
1 0 K ( 1 / 2 W )
3 3 0
R 5 0 4 1 C 5 1 0 1
C 5 0 9 1
( 1 / 2 W )
1 0 1 K
R 5 0 3 1 3 3 0 4 7 / 5 0 1 0 1 K
5 6 K C 5 0 4 1
3 3 0 - 0 . 9 V
2 2 0 / 1 6 C 5 0 8 1 R 5 2 2 1
2 2 / 6 3 1 8 K
C 5 1 3 1 R 5 0 5 1
Q 5 0 8 1
1 0 0 / 1 0 0 5 . 6 K
Q 5 0 2 1
5 0 . 6 V - 5 4 . 8 V
- 5 5 . 4 V
- 5 1 . 2 V
( - 5 0 . 2 V ) R 5 1 7 1
C 5 0 5 1 R 5 2 9 1 R 5 1 6 1
8 2 0
1 0 / 5 0 1 0 0 K D 5 0 0 1 R 5 0 6 1 1 K R 5 3 3 1
( 1 / 2 W )
M T Z J 5 . 6 B 2 . 7 K ( 1 / 2 W ) 1 0 0( 1 / 2 W )
C
R 5 3 0 2
R 5 1 4 2 R 5 1 3 2 R 5 1 8 2
1 0 0( 1 / 2 W )
R 5 1 1 2 R 5 1 2 2 8 2 0 8 2 0 3 3
2 . 2 K 2 . 2 K ( 1 / 2 W ) ( 1 / 2 W ) ( 1 / 2 W ) 5 5 . 4 V
R 5 0 7 2 5 4 . 8 V
5 4 . 8 V
5 4 . 2 V
1 0 0 K
Q 5 0 5 2
Q 5 0 4 2
5 4 . 2 V Q 5 0 3 2
C 5 1 2 2
C 5 1 1 2
C 5 0 7 2 R 5 2 1 2
1 0 0 / 1 0 0
1 0 / 1 0 0 0 5 0 D
1 8 K
- 3 8 . 6 V
Q 5 0 0 2 Q 5 0 1 2
C 5 0 0 2 - 3 8 . 9 V
R 5 0 0 2
R 5 0 9 2
4 7 / 5 0
1 K
1 . 8 K R 5 1 5 2
R 5 2 8 2 1 0 K
R 5 0 2 2
C 5 0 1 2 R 5 0 1 2
1 0 K ( 1 / 2 W )
R 5 0 4 2
3 3 0
C 5 1 0 2
( 1 / 2 W ) C 5 0 9 2
2 2 1 K R 5 0 3 2
3 3 0 4 7 / 5 0 1 0 1 K
5 6 K C 5 0 4 2
3 3 0
- 0 . 9 V 2 2 0 / 1 6 C 5 0 8 2 R 5 2 2 2
2 2 / 6 3 1 8 K
C 5 1 3 2 R 5 0 5 2
Q 5 0 8 2
1 0 0 / 1 0 0 5 . 6 K
5 0 . 6 V - 5 4 . 8 V
Q 5 0 2 2
- 5 5 . 4 V
R 5 2 9 2 - 5 1 . 2 V
R 5 1 7 2
C 5 0 5 2 R 5 1 6 2
8 2 0
1 0 / 5 0 1 0 0 K D 5 0 0 2 R 5 0 6 2 1 K R 5 3 3 2
( 1 / 2 W )
M T Z J 5 . 6 B 2 . 7 K ( 1 / 2 W ) 1 0 0( 1 / 2 W )
S E M I C O N D U C T O R S
N O .
Q 5 0 0 0 - 0 6 , 5 0 1 0 - 1 6 K T C 3 2 0 0 - B L O R 2 S C 1 7 7 5 A - E , F O R 2 S C 1 8 4 5 - E
Q 5 0 2 0 - 2 6 K T C 3 2 0 0 - B L O R 2 S C 1 7 7 5 A - E , F O R 2 S C 1 8 4 5 - E
Q 5 0 3 0 - 3 6 , 5 0 4 0 - 4 6 , 5 0 5 0 - 5 6 , 5 0 7 0 - 7 6 K T A 1 0 2 4 - Y , O O R 2 S A 9 4 9 - Y , O
Q 5 0 6 0 - 6 6 , 5 0 8 0 - 8 6 K T C 3 2 0 6 - Y , O O R 2 S C 2 2 2 9 - Y , O
TX-DS898
H
5 6 . 2 V
R 5 2 3 0
1 5
( 1 / 2 W )
1 . 2 V
N F
N F
R 5 2 5 0 B +
5 6 K
B -
- 1 . 2 V
R 5 2 4 0
1 5
- 5 6 . 2 V
( 1 / 2 W )
5 6 . 2 V
R 5 2 3 1
1 5
( 1 / 2 W )
1 . 2 V
N F
N F
R 5 2 5 1
B +
5 6 K
B -
- 1 . 2 V
R 5 2 4 1
1 5
- 5 6 . 2 V
( 1 / 2 W )
5 6 . 2 V
R 5 2 3 2
1 5
( 1 / 2 W )
1 . 2 V
N F
N F
B +
R 5 2 5 2
5 6 K
B -
- 1 . 2 V
R 5 2 4 2
1 5
- 5 6 . 2 V
( 1 / 2 W )