Sony KP 53V85 Service Manual page 62

A
B
C
D
E
F
G
H
A (1/3) BOARD : IC406 TDA7265
+VS
3
MUTE / ST-BY 5
L + IN 7
4 L OUT
I
8 L -IN
GND 9
10 R -IN
2 R OUT
R + IN 11
1 6
R-VS L-VS
J
• A (1/3) BOARD WAVEFORMS
K
1 2 3 4
16MHz 33.8688MHz
4.1Vp-p (H) 4.1Vp-p (H) 3.3Vp-p (V) 3.1Vp-p (V)
5 6 7 8
L
2.3Vp-p (H) 2.2Vp-p (H) 2.6Vp-p (H) 1.2Vp-p (V)
9 10 11 12
M
503kHz 3.58MHz
5.6Vp-p (H) 140mVp-p (V) 1.3Vp-p (H) 0.2Vp-p (V)
13 14 15 16
N
1.4Vp-p (H) 861mVp-p (H) 2.3Vp-p (H) 2.3Vp-p (H)
17
O
2.6Vp-p (H)
Schematic diagram
A (1/3) S
– 75 –
1 2 3 4 5 6
47 H
47 H
47 H
-3
STBY 5V
-3
board /
– 76 –
7 8 9 10 11 12 13
I O
G VC
47 H
10 H 5V
9V
1.1
10 H
0
0
-3
-3 -3
-3
-3
-3
-3 -3 -3
-3
-3 -3
-3 -3
-3
14 15 16 17 18 19
YM
BLK
-3
-3
-3
-3
-3
-3 -3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3 -3
A(1/3)
– 77 –
20 21 22 23 24
47 H
S
100 H
TO
(2/3)
S
S
WHT
-3
S
-3
-3
-3
-3 -3
-3
-3
-3
-3
– 78 –