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6.
SPECIFIC INFORMATIONS
A. Principle integrated circuits
A1. HS-2190 color TV set composed of the following sections
(1) Microprocessor control: microprocessor N901 (TMP87CM38N V2.0)and
memory N902 (AT24C08).
(2) Small signal processing: super monolithic integrated circuits N201
(TB1238AN)
(3) Sound processing and power a
(TA8213K)
(4) Line and field scan output integrated circuits: field output integrated
circuits N402(TA8403K), line output transistor V432 (2SD1879), line
output transformer T402 (JF0501-90812)
(5) Switch power supply: switch transformer T501 (BCK-08A6), power
transistor V503 (2SC4584),
A2.
Main integrated circuits:
(1) TMP87CM38N
(2) TB1238AN
(3) TA8403K
(4) TA8213K
(5) TA1275AZ
A3.
Electrical circuit analysis
1.
The integrated circuit used in this set
(1) TB1238AN: Picture intermediate frequency, sound intermediate frequency, video
signal processing, chrominance signal processing, RGB output circuit and horizontal
and vertical vibration scanning circuit.
(2) TMP87CM38N: Super central microprocessor
(3) TA8403K: Vertical scanning circuit.
(4) TA8213K: Sound amplifier circuit.
(5) LA7910: Band alternating selection switch
mplifying: integrated circuits N701
Microprocessor
Picture IF/sound IF/video processing/line and
field
scan/color decoding
Field output integrated circuits
Sound power amplifying integrated circuits
SECAM decoding IC
17
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