SERVICE MANUAL
4 Chassis Description
MCR51R410/420/MCR53TF30 These TV uses CN-12C5 chassis which mainly includes a small signal
processor LA76818A
microcontroller LC863440/CH04T1232
vertical scan output stage circuit
LA7840 and sound power amplifier TDA7057AQ. The switch power circuit is formed of hybrid IC
STR-G5653. TV/VIDEO and AV input/output are controlled by HEF4053BP and KA2192BV. LA76818A,
a small signal processing chip developed by Japan-based Sanyo, is designed for use in
PAL/NTSC/SECAM televisions, featuring high-integrity, performance & reliability and advanced
functions. With DVD component input, LA76818A improves its performance greatly based on LA76810.
Microcontroller LC863440, also developed by Japan-based Sanyo, is an I
2
C bus control 8-bit CMOS
single-chip microprocessor. It consists of 48K 8 ROM bit 640 8 RAM bit OSD controller on chip
(36 characters
16lines), remote control signal sensor, PWM output (7bit
3ch), I
2
C bus serial
interface, featuring high performance and wide usage.
The chassis has features of multi system reception and audio/video input/output.
The CN-12C5 chassis series mainly use the following ICs and assemblies.
Table Key ICs and Assemblies
Serial
No.
Position
Type
Function Description
1
N101
LA76818A
Small signal processor
2
D701
LC86F3448A/
CH04T1232
Microcontroller
3
D702
AT24C04/ST24C04
EEPROM
4
N301
LA7840/L
Vertical scan output stage circuit
5
N191
TDA7057AQ
Sound power amplifier
6
NV01
KA2102B/KA2192B TV/Video switch circuit
7
NK01
HEF4053BP
Analog switch circuit
8
N510
STR-G5653
Power supply circuit
9
U101
TDQ-3B8/136
Tuner
17
Summary of Contents for MCR51R410
Page 15: ...14 STRUCTURE AND CHASSIS FUNCTION DESCRIPTION 1 Structure Block Diagram ...
Page 16: ...15 2 Block Diagram for Supply Voltage System ...
Page 17: ...16 3 System Control Block Diagram ...
Page 38: ......
Page 39: ...Printed Circuit Board diagrams 1 ...
Page 40: ......
Page 41: ......