Daewoo DTX-21B4, Service Manual

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CP-520V Service Manual
2
5 CIRCUIT DESCRIPTION 32
5.1 BLOCK DIAGRAM 32
5.2 FUNCTIONAL DESCRIPTION OF VIDEO PROCESSOR 33
5.2.1 Vision IF amplifier 33
5.2.2 QSS sound circuit 33
5.2.3 FM demodulator 33
5.2.4 Audio input selector and volume contro 34
5.2.4.1 STEREO AND AV STEREO VERSIONS 34
5.2.4.2 MONO VERSIONS 34
5.2.5 CVBS and Y/C input signal selection 34
5.2.5.1 ALL VERSIONS 34
5.2.6 Synchronisation circuit 35
5.2.7 Horizontal and vertical drive 36
5.2.8 Chroma, luminance and feature processing 36
5.2.9 Colour decoder 37
5.2.10 RGB output circuit 38
5.2.11 I2C-BUS USER INTERFACE DESCRIPTION 40
5.3 GENERAL DESCRIPTION OF THE TV SOUND OF SOUND PROCESSOR 40
5.3.1 Supported standards 41
5.4 FUNCTIONAL DESCRIPTION SOUND PROCESSOR 42
5.4.1 The UOC III TV Sound Concept 42
5.4.2 Functional Overview Of the digital controller sound part 43
5.4.3 Demodulator and decoder 44
6 SERVICE PARTS LIST 47
6.1 DTX-21G2FZP-SB 47
7 EXPLODED VIEW 52
7.1 DTX-21G2 52
7.2 DTX-21B4 53
7.3 DTX-21U7 54
8 PRINTED CIRCUIT BOARD 55
8.1 4859813693(OLD PCB) 55
8.2 4859816393(NEW PCB) 56
9 SCHEMATIC DIAGRAM 57
9.1 CP-520V 57