Panasonic SH-FX65P, Service Manual

Page: 33 / 65

14 Block Diagram
14.1. DIGITAL AMPLIFIER/LED DRIVE/LED BLOCK DIAGRAM
(41/4:
(41/5/25
+VCC
-VCC
+%
%#$$$
&7#.12#/2
+%
%#$$$
&7#.12#/2
.%*+2
.%*
4%*+2
(+.6'4
&'/1&7.#6+10(+.6'4
*+)*2#55(+.6'424'#/2
&%&'6'%6
.
3
3
3 3
3
3
3
3
3
4')7.#6145
.'&&4+8'%+4%7+6
3
3
3
.
.
54A52-4
5.A52-4
(+.6'4
(+.6'4
2%106
,-
5744170&.'(6
5744170&4+)*6
+VCC
-VCC
(41/4:
(41/.'&
&4+8'
*
.'&&4+8'2%$
.'&2%$
$+%1.14.'&%+4%7+6
%0
/76'
59+6%*
$+#559+6%*
8 8
8
8
3
5
#76112'4#6+10
101((
3
.+0-)4''0
219'44'&
8
8
5*(:22%5'(:22%&+)+6#.#/2.+(+'4.'&&4+8'.'&$.1%-&+#)4#/
8
8
8
8
8
* *
* *
2%106
59+6%*
(41/4:
%+4%7+6
52'#-'45
%0 %0
%0 %0
%0 %0
%0
%0
4%*
8
8
(41/
5/25
8
%0 %0
* %0
294A59
%0 *
%0
&
*
8552 8552
176
$116
176
$116
8&&2
8&&2
15%
8UU#
8UU#8
8UU2
/1&'
+0
855&
+%
%##
&+)+6#.*+%
%.#55&#/2
2416 56#$
8&&#
8&&#
+0
855# 855#
+0
+0
+0276
56#)'
+0276
56#)'
/76'
/76'
29/
/1&7.#614
29/
/1&7.#614
/#0#)'4
15%+..#614
/1&'
56#$
6'/2'4#674'5'0514
%744'062416'%6+10
81.6#)'2416'%6+10
%10641.
#0&
*#0&5*#-'
%10641.
#0&
*#0&5*#-'
&4+8'4
*+)*
8552
8&&2
&4+8'4
.19
&4+8'4
*+)*
&4+8'4
.19
5+)0#..+0'5
/#+05+)0#..+0'
SH-FX65P / SH-FX65PC
33