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TN201AUV/TN131AUV Color TV Receiver
Technical Notes
I. General information
TN201AUV 21 inch NTSC-M color TV receiver uses the single main chip
LA76814, which is controlled by 12C bus, and the CPU chip is LC86F3348.
This type of machine provides CCD and V-CHIP function and many other
expended function, and enables high performance on the single PCB motherboard.
II. Major technical data:
1. Frequency compound digital turning;
2. All channel CATV, AIRTV receiving;
Band AIRTV
Channels
CATV Channels
Channel Range
(MHz)
L
2~6
2~6,A-5~A~3,A-2~B
55.25~127.25
M
7~13
C~KK
133.25~361.25
H
14~69
LL~125
367.25~801.25
3. Preset 125 Channels;
4. NTSC-M system;
5. CCD and V-CHIP function;
6. Built-in AV input socket in the front panel;
7. Full-function infrared remote control;
8. English/ French/Spanish on screen display;
9. Eight background color and foreground color;
10. Direct program selector, program recall, program up/ down (skip programs
which are set 'MEMORY=OFF');
11. Brightness, contrast, tint, sharpness, color and volume 64-steps control
through 12c bus;
12. Timer on/off, sleep off mode, power on/off and blank signal 10-minutes Auto-
off;
13. Mute, blank signal auto-mute, auto-mute for programs which are set
'MEMORY=OFF', and automatic search;
14. Max. Audio output power large than 3w+3w;
15. MTBF lowest limit not large than 20,000 hours;
16. Power input 50/60Hz, 120
±
20V Ac;
17. Antenna input resistance: 75
Ω
(non-balanced style);
18. Screen size: 54cm (flat square angle tube);
19. Max. Power consumption: not more than 75W (120V AC/60Hz);
20. Dimensions: 495X460X460.5 (mm);
21. Weight: app. 21Kg.
III Circuit working principle and functions:
1. Integrated circuit chip LA76814
a) This chip was created by SANYO in 1999. It is a NTSC-M system chip
that integrated audio demodulator, filter, trap filter with the brightness
delay line color decoder intermediate frequency filter. It is a highly
integrated chip and yet has a well stability thus it requires less outer
components for a color TV receiver. It also has the advance functions
Summary of Contents for TN201AUV
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