Sharp 21LT-45SES

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31

AK - 44

CHASSIS

18. CIRCUIT DIAGRAMS

18.1 Schematic Diagram of µ-Controller & IF Circuits

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Table of Contents

Service Manual1
Sharp Corporation1
Electrical Specifications3
Important Servicing Notes4
Remote Control5
Parts Listing7
Replacement Parts9
Table of Contents13
Sharp Corporation13
Table of Contents15
- Stand by15
- Measurements17
- Peri-Tv Socket17
- Safety Precautions17
- Scart 117
- TV Set Switched off17
Introduction18
Circuit Descriptions18
- Small Signal Part with Stv224818
- Vision if Amplifier18
- QSS Sound Circuit (QSS Versions)18
- AM Demodulator18
- FM Demodulator and Audio Amplifier (Mono Versions)18
- Video Switch18
- Synchronisation Circuit18
- Chroma and Luminance Processing19
- RGB Output Circuit19
- Μ-Controller20
- Controls20
- Teletext20
- Video Path21
- Sound Path21
- AV Input Signal Path21
- Video and Sound21
- Rgb21
- Tuner21
- Digital Tv Sound Processor Msp34X022
- Sound Output Stage Tda7266L/Tda726622
- Vertical Output Stage with Tda8174A22
- Video Output Amplifier Tda610723
- Power Supply (Smps)23
- Start up23
- Voltage Regulation23
- Voltage Protection23
- Current Regulation23
- Standby Operation24
- Mode Transition24
- SMPS Switch off24
- Line Circuit24
Integrated Circuit Descriptions25
- Circuit (Beam Current Limiter)25
- Serial Access Cmos 8K Eeprom 24C0825
- Saw Filters25
- IC Descriptions and Internal Block Diagram25
- St9219526
- Stv224X27
- Uv1315, Uv1316, Uv133627
- Tda7266/Tda7266L29
- Tda817430
- Tda610730
- Mc4460831
- Msp34X0G31
- 24C0832
- Tda130833
- Saw Filters33
Block Diagram34
- GENERAL BLOCK DIAGRAM of 11AK4434
Service Mode Adjustments35
- Service Adjustments35
- Service Menu35
- Service Menu Entrance35
- Avl37
- Geometry Menu37
- Geometry Table37
- Using Coloured Buttons37
- Wide Mode Button37
- Geometry Table38
- Screen Adjustment38
- Auto Programming System Set up39
- IF Adjustment39
- Options39
- Service Registers Updating Regarding the Tuner39
- Registers Details40
Volume42
Hotel Mode Functions42
- Languages42
Circuit Diagrams43
- Schematic Diagrams43
Update53
How to Update the Technical Information53

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