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26" TFT TV

SERVICE MANUAL
TABLE OF CONTENTS
1. INTRODUCTION ...................................................................................................................................... 1
2. TUNER...................................................................................................................................................... 1
3. IF PART (TDA9886) ................................................................................................................................. 1
4. MULTI STANDARD SOUND PROCESSOR ............................................................................................ 2
5. VIDEO SWITCH TEA6415 ....................................................................................................................... 2
6. AUDIO AMPLIFIER STAGE WITH TPA3002D2 ...................................................................................... 2
7. MAIN POWER SUPPLY (SMPS) AND POWER INTERFACE BOARD .................................................. 3
8. MICROCONTROLLER ............................................................................................................................. 3
9. SERIAL ACCESS CMOS 4K x 8 (32K bit) EEPROM 24C32A................................................................. 3
10. CLASS AB STEREO HEADPHONE DRIVER TDA1308 ......................................................................... 3
11. SAW FILTERS.......................................................................................................................................... 3
12. IC DESCRIPTIONS .................................................................................................................................. 4
12.1. TDA9886 ........................................................................................................................................... 5
12.1.1. General Description ................................................................................................................. 5
12.1.2. Features .................................................................................................................................... 5
12.1.3. Pinning ...................................................................................................................................... 5
12.2. TEA6415C ......................................................................................................................................... 6
12.2.1. General Description ................................................................................................................. 6
12.2.2. Features .................................................................................................................................... 6
12.2.3. Pinning ...................................................................................................................................... 6
12.3. 24C32A.............................................................................................................................................. 7
12.3.1. Features .................................................................................................................................... 7
12.3.2. Description................................................................................................................................ 7
12.3.3. Pin Function table .................................................................................................................... 7
12.3.4. Functional Descriptions .......................................................................................................... 8
12.4. SAA5264 ........................................................................................................................................... 8
12.4.1. Features .................................................................................................................................... 8
12.4.2. General Description ................................................................................................................. 8
12.4.3. Pin Connections and Short Descriptions .............................................................................. 8
12.5. LM317.............................................................................................................................................. 10
12.5.1. General Description ............................................................................................................... 10
12.5.2. Features .................................................................................................................................. 10
12.6. ST24LC21 ....................................................................................................................................... 10
12.6.1. Description.............................................................................................................................. 10
12.6.2. Features .................................................................................................................................. 10
12.6.3. Pin connections...................................................................................................................... 11
12.7. TLC7733.......................................................................................................................................... 11
12.7.1. Description.............................................................................................................................. 11
12.8. 74LVC257A ..................................................................................................................................... 12
12.8.1. Features .................................................................................................................................. 12
12.8.2. Description.............................................................................................................................. 12
12.8.3. Pin Description ....................................................................................................................... 12
12.9. 74LVC14A ....................................................................................................................................... 12
12.9.1. Features .................................................................................................................................. 12
12.9.2. Applications............................................................................................................................ 12
12.9.3. Description.............................................................................................................................. 12
12.9.4. Pin Description ....................................................................................................................... 13
12.10. LM1117............................................................................................................................................ 13
12.10.1. General Description ............................................................................................................... 13
12.10.2. Features .................................................................................................................................. 13
12.10.3. Applications............................................................................................................................ 13
12.10.4. Connection Diagrams ............................................................................................................ 13
12.11. IRF7314- IRF7316........................................................................................................................... 14
12.12. MC34063A....................................................................................................................................... 15
12.13. LM2576- 52kHz Simple 3A Buck Regulator.................................................................................... 16
12.14. DS90C385 ....................................................................................................................................... 17
12.14.1. General Description ................................................................................................................. 17

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26" TFT TV Service Manual 02/08/2005
12.14.2. Features ................................................................................................................................... 17
12.14.3. Pin Description ......................................................................................................................... 18
12.15. MSP34X1G...................................................................................................................................... 19
12.15.1. Introduction............................................................................................................................... 19
12.15.2. Features ................................................................................................................................... 20
12.15.3. Pin connections ........................................................................................................................ 20
12.16. TPA3002D ....................................................................................................................................... 22
12.16.1. Description ............................................................................................................................... 22
12.16.2. Pin Connection ......................................................................................................................... 22
12.17. TDA1308 ......................................................................................................................................... 22
12.17.1. General Description ................................................................................................................. 22
12.17.2. Features ................................................................................................................................... 23
12.17.3. Pinning ..................................................................................................................................... 23
12.18. PI5V330........................................................................................................................................... 23
12.18.1. General Description ................................................................................................................. 23
12.19. AD9883A ......................................................................................................................................... 23
12.19.1. General Description ................................................................................................................. 23
12.19.2. Features ................................................................................................................................... 23
12.19.3. Pin Descriptions ....................................................................................................................... 24
12.20. SAA7118E ....................................................................................................................................... 27
12.20.1. General Description ................................................................................................................. 27
12.20.2. Features ................................................................................................................................... 27
12.20.3. Pinning ..................................................................................................................................... 28
12.21. TPS72501........................................................................................................................................ 32
12.21.1. General Description ................................................................................................................. 32
12.21.2. Features ................................................................................................................................... 33
12.22. TSOP1136....................................................................................................................................... 34
12.23. PCF8591 ......................................................................................................................................... 34
12.23.1. General Description ................................................................................................................. 34
12.23.2. Features ................................................................................................................................... 34
12.23.3. Pinning ..................................................................................................................................... 35
12.24. PW1231........................................................................................................................................... 35
12.24.1. General Description ................................................................................................................. 35
12.24.2. Features ................................................................................................................................... 35
12.24.3. Applications .............................................................................................................................. 35
12.25. PW181............................................................................................................................................. 36
12.25.1. General Description ................................................................................................................. 36
12.25.2. Features ................................................................................................................................... 36
12.25.3. Applications .............................................................................................................................. 36
12.26. SIL151B........................................................................................................................................... 37
12.26.1. General Description ................................................................................................................. 37
12.26.2. Features ................................................................................................................................... 37
12.27. SDRAM 4M x 16 (MT48LC4M16A2TG-75)..................................................................................... 37
12.27.1. General Description ................................................................................................................. 37
12.27.2. Features ................................................................................................................................... 38
12.27.3. Pin Descriptions ....................................................................................................................... 38
12.28. FLASH 16MBit................................................................................................................................. 40
12.28.1. Description ............................................................................................................................... 40
12.28.2. FEATURES SUMMARY........................................................................................................... 40
12.29. 74LX1G86 ....................................................................................................................................... 41
12.29.1. Features ................................................................................................................................... 41
12.29.2. Description ............................................................................................................................... 41
12.29.3. Pin Connections and Descriptions ........................................................................................... 41
12.30. 74HCT4053 ..................................................................................................................................... 42
12.30.1. General Description ................................................................................................................. 42
12.30.2. Pin Description ......................................................................................................................... 42
13. SERVICE MENU SETTINGS ................................................................................................................. 43
13.1. display menu ................................................................................................................................... 43
13.2. calibration menu .............................................................................................................................. 45
13.3. deinterlacer menu............................................................................................................................ 47

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26" TFT TV Service Manual 02/08/2005
13.4. Service menu factory reset values .................................................................................................. 49
14. BLOCK DIAGRAM.................................................................................................................................. 50
15. CIRCUIT DIAGRAMS ............................................................................................................................. 51

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26" TFT TV Service Manual 02/08/2005
1. INTRODUCTION
26" TFT TV is a progressive TV control system with built-in de-interlacer and scaler. It uses a
1280*768 panel with 16:9 aspect ratio.The TV is capable of operation in PAL, SECAM, NTSC
(playback) colour standards and multiple transmission standards as B/G, D/K, I/I', and L/L