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4 Chassis Description
MCR51R410/420/MCR53TF30 These TV uses CN-12C5 chassis which mainly includes a small signal
processor LA76818A
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
single-chip microprocessor. It consists of 48K 8 ROM bit
(36 characters
16lines), remote control signal sensor, PWM output (7bit
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.
Serial
Position
No.
1
N101
2
D701
3
D702
4
N301
5
N191
6
NV01
7
NK01
8
N510
9
U101
SERVICE MANUAL
microcontroller LC863440/CH04T1232
Table
Key ICs and Assemblies
Type
LA76818A
LC86F3448A/
CH04T1232
AT24C04/ST24C04
LA7840/L
TDA7057AQ
KA2102B/KA2192B TV/Video switch circuit
HEF4053BP
STR-G5653
TDQ-3B8/136
vertical scan output stage circuit
640 8 RAM bit
Function Description
Small signal processor
Microcontroller
EEPROM
Vertical scan output stage circuit
Sound power amplifier
Analog switch circuit
Power supply circuit
Tuner
17
2
C bus control 8-bit CMOS
OSD controller on chip
2
3ch), I
C bus serial
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