Yamaha AV-S77 Service Manual page 27

A B
1 µ-COM & Power Supply
For Flash Writer
2
XL200
U200
13 15
REMOTE
REM
21
SENSOR
B-BST
Bass Boost
Q202 1
MUTE
MUTE Q201
2
3
NIGHT
Q200
NIGHT 93
SPRY1
SP-RY1
36
SPRY2
SP-RY2 37
3
8
17
DSP Control Singnal
19
4
23
27
65 14 97
5
6
7
C D
Signal Detect
CB202
M-SENSOR
CONTROL
6ch Selector
CONTROL
/6ch Volume
INPUT Selector
IC201
2
E PROM
33 30 32 34 3 4 29 28 31 10 11 91
IC200
M30218FCFP
16 63 89 38 96 98 ~ ~
100 39 51 52 62 64 66
KEY
INPUT
~
6 40 42
+5V -29Vp
V200 FL Display
58 59
VFL1
E F
For Auto Power
OPERATION P.C.B.
Power Down Detect
22 +B12V
Q209/D206/D207
PD
12
RESET Circuit
RESET
Q208/D205
Voltage Moniter
92
VPRT R459,R463,R464,R465,R460,R461,R217
35
HPSW
HPSW +B12V
90
SW-PRT
SW-PRT
+12V
IC313
P-ON
94
POWER
~
88
~
54
-12V IC315
1 2
+5D IC314
VFL2
-24V
Q309
VFL1
VFL2
26
G H
MAIN P.C.B.
+5V Q308
D308
D310
D311
I J
AV-S77
2
4 5
1 3
8
7
6
JK312
ACG
27