JVC RX-F31S Service Manual page 22

Digital power amplifier and low pass filter section
R 1 3 5 2
3 6 0
I C 3 1 1 I R S 2 0 1 2 4 S
F B 1 _ L
F B 1 _ L I N N C
F B 2 _ L
F B 2 _ L
P W M _ L I S E T 1 N C
P W M _ L
P W M _ R R 1 3 5 7 C 1 3 4 3
P W M _ R
D T / S D V B
F B 2 _ R 1 0 0
0 . 3 3 / 2 5
F B 2 _ R
F B 1 _ R
I S E T 2 H O
F B 1 _ R
F B 1 _ S L
F B 1 _ S L
/ O C V S
F B 2 _ S L
F B 2 _ S L
P W M _ S L
P W M _ S L C O M N C
P W M _ S R
Q 3 1 1
P W M _ S R
F B 2 _ S R L O V c c
F B 2 _ S R
F B 1 _ S R
F B 1 _ S R
F B 1 _ C C 1 3 8 1 1 / 1 6
F B 1 _ C
F B 2 _ C
F B 2 _ C
P W M _ C
P W M _ C
P W M _ S B
P W M _ S B I C 3 1 2 I R S 2 0 1 2 4 S
F B 2 _ S B
F B 2 _ S B
F B 1 _ S B
I N N C
F B 1 _ S B
P R O T E C T
P R O T E C T
I S E T 1 N C
C L K _ F _ C O N T
C L K _ F _ C O N T 0 . 3 3 / 2 5
R 1 3 5 8 C 1 3 4 4
A M P _ C L K
A M P _ C L K D T / S D V B
1 0 0
I S E T 2 H O
Q 3 1 2
/ O C V S
K T A 1 5 0 4 / Y G /
C O M N C
L O V c c
C 1 3 8 2
1 / 1 6
LVA10564-8
LVA10564-6
R 1 8 5 2
3 6 0
I C 8 1 1 I R S 2 0 1 2 4 S
I N N C
I S E T 1 N C
R 1 8 5 7 C 1 8 4 3
D T / S D V B
1 0 0 0 . 3 3 / 2 5
I S E T 2 H O
/ O C V S
Q 8 1 1
C O M N C
C 1 8 8 1
L O V c c
1 / 1 6
I C 8 1 2 I R S 2 0 1 2 4 S
I N N C
I S E T 1 N C
R 1 8 5 8 C 1 8 4 4
D T / S D V B
1 0 0
0 . 3 3 / 2 5
I S E T 2 H O
Q 8 1 2
/ O C V S
K T A 1 5 0 4 / Y G /
C O M N C
L O V c c
C 1 8 8 2
1 / 1 6
R 1 9 5 2
3 6 0
I C 9 1 1 I R S 2 0 1 2 4 S
I N N C
I S E T 1 N C
C 1 9 4 3
R 1 9 5 7
D T / S D V B
1 0 0
0 . 3 3 / 2 5
I S E T 2 H O
/ O C V S
C O M N C
Q 9 1 1
L O V c c
C 1 9 8 1
1 / 1 6
I C 9 1 2 I R S 2 0 1 2 4 S
I N N C
I S E T 1 N C
C 1 9 4 4
R 1 9 5 8
D T / S D V B
1 0 0
0 . 3 3 / 2 5
I S E T 2 H O
Q 9 1 2
/ O C V S
K T A 1 5 0 4 / Y G /
C O M N C
L O V c c
C 1 9 8 2
1 / 1 6
S U R R O U N D B A C K
E X C E P T B / E / E N / E V
F B 1 _ L
C 1 3 7 9
R 1 3 7 9
F B 2 _ L
4 . 7 k 0 . 0 0 1 / 5 0
R 1 3 7 7
F R O N T L c h
6 . 8 k
I R F B 4 2 1 2
Q 1 3 0 1
D
R 1 3 6 1
G
5 6
S
( 1 / 4 W )
L 1 3 0 1
2 2 u
C N 3 1 1 C N 3 2 1 M Y
Q G B 1 2 2 4 K 1 - 1 5 Q G B 1 2 2 4 J 1 - 1 5
- 3 0 . 4 V
1 1 I R F B 4 2 1 2
Q 1 3 0 3
- 3 4 . 8 V D
2 2
0 V R 1 3 6 3
3 3
G
0 V 5 6
4 4 ( 1 / 4 W ) S
3 . 9 V
5
5
- 2 3 . 9 V 0 . 0 1 / 5 0
6 6
- 3 2 . 6 V P W M _ R
7 7
- 3 2 . 6 V P W M _ L
8 8
- 3 4 . 3 V
9
9
0 V
1 0 1 0
- 3 0 . 4 V
1 1 1 1
F R O N T R c h
- 3 1 . 0 V S D
1 2 1 2
0 V
1 3 1 3
0 V
1 4 1 4
3 . 9 V D
1 5 1 5
R 1 3 6 2
G
5 6
Q 1 3 0 2 S
( 1 / 4 W )
L 1 3 0 2
2 2 u
M Y
Q 1 3 0 4
D
R 1 3 6 4
G
5 6
S
( 1 / 4 W )
R 1 3 7 8
6 . 8 k
R 1 3 8 0 C 1 3 8 0
F B 2 _ R
4 . 7 k 0 . 0 0 1 / 5 0
F B 1 _ R
F B 1 _ S L
R 1 8 7 9 C 1 8 7 9
F B 2 _ S L
4 . 7 k 0 . 0 0 1 / 5 0
R 1 8 7 7
S U R R O U N D L c h
6 . 8 k
C N 8 1 1 C N 8 2 1
I R F B 4 2 1 2
Q G B 1 2 2 4 K 1 - 1 3 Q G B 1 2 2 4 J 1 - 1 3
Q 1 8 0 1
- 3 2 . 5 V P W M _ S L D
1 1
0 V R 1 8 6 1
2 2
G
3 . 9 V 5 6
3 3 S
( 1 / 4 W )
- 3 4 . 6 V
4 4 L 1 8 0 1
- 3 4 . 6 V
5 5
- 3 0 . 2 V 2 2 u
6 6
M Y
- 3 4 . 6 V
7 7
- 3 4 . 6 V
I R F B 4 2 1 2
8 8
Q 1 8 0 3
0 V D
9 9
2 3 . 8 V R 1 8 6 3
1 0 1 0
G
3 . 9 V 5 6
1 1 1 1
( 1 / 4 W ) S
- 3 0 . 2 V
1 2 1 2
- 3 2 . 5 V P W M _ S R
1 3 1 3
S U R R O U N D R c h
I R F B 4 2 1 2
Q 1 8 0 2 D
R 1 8 6 2
G
5 6
S
( 1 / 4 W )
L 1 8 0 2
2 2 u
M Y
I R F B 4 2 1 2
Q 1 8 0 4 D
R 1 8 6 4
5 6 G
( 1 / 4 W ) S
R 1 8 7 8
R 1 8 8 0 6 . 8 k
F B 2 _ S R
4 . 7 k C 1 8 8 0 0 . 0 0 1 / 5 0
F B 1 _ S R
F B 1 _ C
R 1 9 7 9 C 1 9 7 9
F B 2 _ C
4 . 7 k 0 . 0 0 1 / 5 0
R 1 9 7 7
C E N T E R c h 6 . 8 k
I R F B 4 2 1 2
Q 1 9 0 1
D
R 1 9 6 1
G
5 6
S
( 1 / 4 W )
L 1 9 0 1
2 2 u
M Y
I R F B 4 2 1 2
Q 1 9 0 3 D
R 1 9 6 3
G
5 6
( 1 / 4 W ) S
0 . 0 1 / 5 0
S U R R O U N D B A C K c h E X C E P T B / E / E N / E V
- 3 0 . 4 V
1 F B 1 _ S B
1 F B 1 _ S B
- 3 4 . 8 V
2 2
0 V
3
3
0 V
4 4
3 . 9 V
5 5
I R F B 4 2 1 2
- 2 3 . 9 V Q 1 9 0 2 D
6 6
- 3 2 . 6 V P W M _ S B R 1 9 6 2
7 7
G
- 3 2 . 6 V P W M _ C 5 6
8 8 S L 1 9 0 2
( 1 / 4 W )
- 3 4 . 7 V
9 9
0 V 2 2 u
1 0 1 0
- 3 0 . 4 V
1 1 1 1 M Y
- 3 1 . 0 V
1 2 1 2
0 V
1 3 1 3
I R F B 4 2 1 2
0 V
Q 1 9 0 4
1 4 1 4 D
3 . 9 V
1 5 1 5 R 1 9 6 4
G
S D 5 6
C N 9 2 1
( 1 / 4 W ) S
Q G B 1 2 2 4 J 1 - 1 5
R 1 9 7 8 6 . 8 k
R 1 9 8 0 4 . 7 k
F B 2 _ S B
C 1 9 8 0 0 . 0 0 1 / 5 0
D C P r o t e c t
K T A 1 2 6 8 / G L /
- 3 3 . 7 V
Q 1 7 0 3
0 V
M Y
C 1 3 6 7
0 . 2 2 / 5 0
M Y
M Y
M Y
!
R 1 2 0 1
4 7 0
( 2 W )
C 1 2 0 1
N I
! C 1 2 0 2
( 2 W ) N I
R 1 2 0 2
4 7 0
M Y
C 1 9 6 7
0 . 2 2 / 5 0
Q 1 7 4 3 5 . 1 V
5 . 1 V
K R A 1 0 2 S
0 V
O v e r C u r r e n t & S h u t d o w n
5 . 0 V
- 3 4 . 0 V
Q 1 7 4 4
M Y
Q 1 7 4 5 K R C 1 0 2 S
- 3 0 . 3 V
- 3 4 . 0 V
C 1 7 4 3
1 / 5 0
K R C 1 0 9 S
2-4
- 3 4 . 0 V
Q 1 7 0 1
K T C 3 2 0 0 / G L /
- 3 4 . 0 V
5 . 1 V
R 1 7 0 1
5 . 1 V
1 0 0
Q 1 7 0 2
K T C 3 1 9 9 / G L /
0 V 0 V
0 V
F W 3 0 1
C 1 3 9 8 F R
1 0 V
0 . 0 0 1 2 / 5 0
2 0 V
C 1 3 9 7 F L
3 0 V
0 . 0 0 1 2 / 5 0
4 0 V
C 1 9 9 7 C
5 0 V
0 . 0 0 1 2 / 5 0
6 0 V
F W 8 0 1
C 1 8 9 8 S R
1 0 V
0 . 0 0 1 2 / 5 0
2 0 V
C 1 8 9 7 S L
3 0 V
0 . 0 0 1 2 / 5 0
4 0 V
C 1 9 9 8 S B
5 0 V
0 . 0 0 1 2 / 5 0
6 0 V
7 0 V
C L K _ F _ C O N T
C L K _ F _ C O N T
A M P _ C L K
A M P _ C L K
T H 1
T H C O M
P R O T E C T
P R O T E C T
A M P + B
P . G N D
A M P - B
A M P - B
D . G N D
- B + 1 2 V
- B + 1 2 V
+ S 2 B
+ S 2 B
H P _ S W
H P _ S W
H P _ R E L A Y
H e a d p h o n e R e l a y H P _ R E L A Y
R 1 2 0 3
!
8 2
U N F
( 1 / 4 W )
1 9 . 3 V
H P _ R E L A Y
Q 1 2 0 1
K R C 1 0 5 S 0 V
D 1 2 0 2
0 V
M A 1 1 1
F W 2 2 6
C N 2 1 6
LVA10564-5
Q G A 2 0 0 1 C 1 - 0 4
C 7 5 0 3
0 . 1
Q N S 0 1 7 0 - 0 0 1
C 7 5 0 1
0 . 0 1 5
J 7 5 0 1
C 7 5 0 2
0 . 0 1 5
H e a d p h o n e O U T
W 7 5 1
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
SHEET 3