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Service manual SC-150
-3-
Fo
5-4-1 Introduction........................................................................................................................................... 51
5-4-2 CPU ...................................................................................................................................................... 51
............................................................................... 52
5-4-4 Tuning .................................................................................................................................................. 52
5-4-5 Automatic rmat switching and WSS ............................................................................................... 52
5-4-6 EXTERNAL source control logic........................................................................................................... 54
5-4-7 Over Current Protection........................................................................................................................ 55
5-5Teletext Display ................................................................................................................................................. 55
5-6 Sound processing............................................................................................................................................... 56
5-6-1 Analogue sound IF-input section............................................................................................................ 56
5-6-2 Quadrature Mixers ................................................................................................................................ 56
5-6-3 Phase and AM discr imination........................................................................................................... 56
5-6-4 NICAM decoder.................................................................................................................................... 57
5-6-5 DSP section.......................................................................................................................................... 57
5-6-6 Sound Mode switching.......................................................................................................................... 57
5-7 Sound amplification........................................................................................................................................... 57
5-7-1 Power amplifier..................................................................................................................................... 57
5-7-2 Mode selection....................................................................................................................................... 58
5-8 Vertical deflection............................................................................................................................................. 58
5-8-1 Flyback voltage..................................................................................................................................... 58
5-8-2 Protection.............................................................................................................................................. 58
5-8-3 Guard circuit.......................................................................................................................................... 58
5-8-4 Damping resistor................................................................................................................................... 58
5-8-5 EAST-WEST Amplifier (TDA8358J only)............................................................................................... 58
5-9 Power supply (STR F6653).. .............................................................................................................................. 59
5-9-1 STR-F6654 generaral description......................................................................................................... 59
5-9-2 Power supply primary par t operations................................................................................................... 59
5-10TV start-up,TV normal run and stand by mode operations............................................................................... 63
5-10-1 TV start-up operations.......................................................................................................................... 63
5-10-2 TV normal run and stand-by mode operations....................................................................................... 64
6 - Se
6 -1 Service part list
rvice parts list..................................................................................................................................................
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69
69
6 -2 Service part list option
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79
7 - Exploded View
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80
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81
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83
8 - PCB Layout
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81
8 -1 MAIN PCB
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82
8 -2 UNION PCB
9 - Circuit Diagram
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83
9 - 1 Circuit Diagram(MAIN)
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84
9 - 2 Circuit Diagram
(UNION)
5-4-3
-Controller I/O pin configuration and function
5-3-17 Analogue RGB Insertion .....................................................................................................................50
5-3-18 Fast-Blank Monitor ................................................................................................................................ 50
5-3-19 Vertical and East/West Deflection ....................................................................................................... 50
5-3-20 EHT Compensation ................................................................................................................................ 51
5-3-21 Reset Function ...................................................................................................................................... 51
5-3-22 Standby and Power-On ........................................................................................................................ 51
5-4 Micro-controller ......................................................................................................................................................... 51