Block Diagram - Key/Display Section - Sony STR-DG720 Service Manual

STR-DG720
Q Q
3 7 6 3 1 5 1 5 0
T E
L 1 3 9 4 2 2 9 6 5 1 3
w w w
STR-DG720
5-6.
J2000
AUTO CAL MIC
US,CND MODEL
SECTION
x a o
y
. i
http://www.xiaoyu163.com
BLOCK DIAGRAM – KEY/DISPLAY Section –
MIC AMP
IC2000
5 1 115 DCAC IN
XM 93 XM MOXMI
XM MOXMI
J
XM MIXMO 92 XM MIXMO
(Page 21)
57
X1
X1101
12.5MHz
EEPROM
58 X0
IC1131
SDA 5 98 EEPROM DATA
SCL
6 78 EEPROM CLK
Q Q
3 7 6
+3.3V
VOLTAGE
(STBY)
DET STOP
RESET
IC1007
IC1006
2 1 2 IN A
RESET
OUT Y 4 55 INIT
IC1005
1 1A 3Y 2 1 IN B
62 RESET TRG
S100
85 POWER_KEY
u 1 6 3
22 22
2 4
8 9 9
SYSTEM
CONTROL
IC1010 (5/6)
BUFFER
IC101
FL_LAT 69 9 8 9 STB
FL_DATA 71 4 6 7 DIN
70 2 3 8 CLK
FL_CLK
SIRCS
SIRCS IN 84 2
2
80
VOL_JOG(2A)
3
VOL_JOG(2B)
79
2
89
INPUT ENCODER A
3
INPUT ENCODER B 90
3 1 5 1 5 0 8 9
5
TUNING A
TUNING B 6
113
AD KEY1
SW NETWORK
114
AD KEY2
S101-108
• Abbreviation
m
c o
.
2
8 9 9
FL DISPLAY DRIVER
IC100
14
SEG1
I F1
I
29
F2
FL101
SEG17 •
31 VACUUM
FLUORESCENT
GRID1 42
DISPLAY
I I
GRID11 32
REMOTE
CONTROL
OUT
SIGNAL
RECEIVER
IC103
RV102
MASTER
VOLUME
RV101
INPUT
SELECTOR
2 4 9 8 2 9 9
RV103
TUNING +/–
SW NETWORK
S109–113,115
CND : Canadian model