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13. Circuit Explanation
The UOC module comprised of Philip super advanced CMOS chip TDA9373 is used for model
34F9B-T color TV pictures and text. This product has I
2
C bus-mastering digital control system and
DVD component terminals (or SCART terminal) for auto sound identification, independent woofer
volume control, English and Russian picture texts, treble and bass tone increase, image and sound
mode for individual preference, picture size zooming and 218 channel storage.
I. Electrical circuits and integrated circuits of 34F9B-T TV receiver
1.1 Electrical circuits
Electric circuits of the 34F9B-T TV receiver are comprised of the following sections:
1.1.1 Microprocessor and signal processor: comprised of super single chip integrated circuit
N201(TDA9373), storage N202 (KS24C08).
1.1.2 Sound processing and amplifying: comprised of integrated circuit N701 (TDA9860) for
sound tone processing and integrated circuits N601 and N610 (TDA7297) for sound
amplifying.
1.1.3 Integrated circuit for line and field scan output: comprised of integrated circuit N301
(TDA8350Q) for field output, V403 (2SD1887YD) for line output tube and T444
(BSC29-0130D) line output transformer.
1.1.4 Video frequency amplifying: comprised of integrated circuit N501 (TDA6107Q)
1.1.5 Power supply control: comprised of switch transformer T801 (BCK-100-02), power
integrated circuit N801(KA5Q1265RF-YDTU) and secondary power integrated circuit N804
(KA7630).
1.2 Main integrated circuits:
1.2.1 TDA9373 Microprocessor / picture intermediate frequency / sound intermediate
frequency / video processing / line field scanning / color decoding / text
1.2.2 TDA9860 Multi-
function TV stereo sound tone processing integrated circuit
1.2.3 TDA8350Q
Field
output integrated circuit
1.2.4 TDA6107Q
Video
amplifying integrated circuit
1.2.5 TDA7297 Sound
amplifying integrated circuit
1.2.6 KA5Q1265RF-YDTU
Power integrated circuit
Circuit Explanation
