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20" TFT TV

SERVICE MANUAL

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TABLE OF CONTENTS
1. INTRODUCTION.......................................................................................................................................1
2. TUNER ......................................................................................................................................................1
3. IF PART (TDA988X)..................................................................................................................................1
4. MULTI STANDARD SOUND PROCESSOR ............................................................................................1
5. AUDIO AMPLIFIER STAGE WITH AN7522 .............................................................................................2
6. POWER.....................................................................................................................................................2
7. MICROCONTROLLER SDA55XX ............................................................................................................2
7.1. General Features...................................................................................................................................2
7.2. External Crystal and Programmable Clock Speed ................................................................................2
7.3. Microcontroller Features ........................................................................................................................2
7.4. Memory..................................................................................................................................................2
7.5. Display Features....................................................................................................................................2
7.6. ROM Characters....................................................................................................................................3
7.7. Acquisition Features ..............................................................................................................................3
7.8. Ports ......................................................................................................................................................3
8. SERIAL ACCESS CMOS 16K (2048*8) EEPROM ST24C16 ..................................................................3
9. CLASS AB STEREO HEADPHONE DRIVER TDA1308 ..........................................................................3
10. SAW FILTERS ..........................................................................................................................................3
11. IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM ........................................................................4
11.1. LM1117 ..............................................................................................................................................4
11.1.1. General Description..................................................................................................................4
11.1.2. Features .....................................................................................................................................4
11.1.3. Applications ..............................................................................................................................4
11.1.4. Connection Diagrams...............................................................................................................4
11.2. LM2576 ..............................................................................................................................................5
11.2.1. General Description..................................................................................................................5
11.2.2. Features .....................................................................................................................................5
11.2.3. Pin description ..........................................................................................................................5
11.3. LM317T ..............................................................................................................................................6
11.3.1. Description ................................................................................................................................6
11.3.2. Features .....................................................................................................................................6
11.4. TFMS5360 .........................................................................................................................................6
11.4.1. Description ................................................................................................................................6
11.4.2. Features .....................................................................................................................................6
11.5. ST24LC21 ..........................................................................................................................................7
11.5.1. Description ................................................................................................................................7
11.5.2. Features .....................................................................................................................................7
11.5.3. Pin connections ........................................................................................................................7
11.6. SST37VF040......................................................................................................................................8
11.6.1. Description ................................................................................................................................8
11.6.2. Features .....................................................................................................................................8
11.6.3. Pin Description .........................................................................................................................8
11.7. TEA5114A..........................................................................................................................................9
11.7.1. General description ..................................................................................................................9
11.7.2. Features .....................................................................................................................................9
11.7.3. Pin Connections .......................................................................................................................9
11.8. TEA6415 ..........................................................................................................................................10
11.8.1. General description ................................................................................................................10
11.8.2. 13.5.2.Features........................................................................................................................10
11.8.3. 13.5.3.Pinning..........................................................................................................................10
11.9. VPC3230D .......................................................................................................................................11
11.9.1. General Description................................................................................................................11
11.9.2. Pin Connections and Short Descriptions.............................................................................11
11.10. SDA55XX (SDA5550) ......................................................................................................................13
11.10.1. General description ................................................................................................................13
11.11. TDA9885/86 .....................................................................................................................................14
11.11.1. General description ................................................................................................................14

i
20" TFT TV Service Manual 24/10/2003

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11.11.2. Features ...................................................................................................................................14
11.11.3. Pinning.....................................................................................................................................14
11.12. TDA1308 ..........................................................................................................................................15
11.12.1. General Description................................................................................................................15
11.12.2. Features ...................................................................................................................................15
11.12.3. Pinning.....................................................................................................................................15
11.13. AN7522N..........................................................................................................................................15
11.13.1. General description ................................................................................................................15
11.13.2. Pin Descriptions .....................................................................................................................15
11.14. PI5V330 ...........................................................................................................................................16
11.14.1. General description ................................................................................................................16
11.14.2. Features ...................................................................................................................................16
11.14.3. Pin Descriptions .....................................................................................................................16
11.15. GM6015 ...........................................................................................................................................17
11.15.1. General description ................................................................................................................17
11.15.2. Features ...................................................................................................................................17
11.16. SAA3010T........................................................................................................................................18
11.16.1. Description ..............................................................................................................................18
11.16.2. Features ...................................................................................................................................18
11.16.3. Pinning.....................................................................................................................................18
11.17. AD9883A..........................................................................................................................................19
11.17.1. General description ................................................................................................................19
11.17.2. Features ...................................................................................................................................19
11.17.3. Pin Descriptions .....................................................................................................................19
11.18. MC141585........................................................................................................................................22
11.18.1. General description ................................................................................................................22
11.18.2. Features ...................................................................................................................................22
11.18.3. Pin Description .......................................................................................................................22
11.19. MC34063..........................................................................................................................................24
11.19.1. Description ..............................................................................................................................24
11.19.2. Features ...................................................................................................................................24
11.19.3. Pin connections ......................................................................................................................24
11.20. MSP34X0G ......................................................................................................................................25
11.20.1. Introduction .............................................................................................................................25
11.20.2. Features ...................................................................................................................................25
11.20.3. Pin connections ......................................................................................................................26
12. SERVICE MENU SETTINGS..................................................................................................................28
12.1. ADJUST MENU SETTINGS ............................................................................................................28
12.2. OPTIONS MENU SETTINGS ..........................................................................................................29
12.3. APS WSS TEST MENU...................................................................................................................33
13. BLOCK DIAGRAM ..................................................................................................................................34
14. CIRCUIT DIAGRAMS .............................................................................................................................38

ii
20" TFT TV Service Manual 24/10/2003

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1. INTRODUCTION
20" TFT-LCD TV is a Progressive TV control system based on the