Structure And Chassis Function Description; Structure Block Diagram - Changhong Electric 21NF55 Service Manual

STRUCTURE AND CHASSIS FUNCTION DESCRIPTION

1. STRUCTURE BLOCK DIAGRAM

From
Antenna
Tuner
A101
EEPROM
IIC BUS
AT24C08
Rem ote
R e m o t e
Sensor
c o n t ro l
HS0038
Circui for
Buttons On
The TV
Audio
Input
Audio Prec essor
TDA7449
Audio Amp lifier
TDA7057AQ
R
Speaker
L
Fig.4 S t r u c t u r e B l o c k D i a g r a m f o r E X - 1 A 1 C h a s s i s S e r i e s
SERVICE MANUAL
IF Pre-
Amplifier
+
SAWF
Band 1,2
Vt,AGC
Microcontroller and small signal processor
UOC
CH05T0108
H.Drive
H.OUT
150-250V~,50/60Hz
Power Supply Circuit
STR-F6654 or
STR-G5653
Analog Switc h
HEF4053
R
G
B
V.OUT
TDA8356J
FBT
T402
+115V
+15V
+5V-1
14
Audio/Video
Input/Output
CRT
Video
Amplifier
Formed of
VY01-VY09
+3.3V