Sharp 21LT-45SES

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6

21LT-45S

CHASSIS LAYOUT

Mother Unit

CRT Unit

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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