Teac-EU-2845-ST-Service-Manual电路原理图.pdf

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1、 SERVICE MANUAL EU2845ST 16:9 CTV NOV03 SERVEU2845 RadioFans.CN 收音机爱 好者资料库 i AK45 Service Manual 01/12/2003 TABLE OF CONTENTS 1.INTRODUCTION.1 2.TUNER.1 3.IF PART (TDA9885/86).1 4.VIDEO SWITCH TEA6415.2 5.MULTI STANDARD SOUND PROCESSOR.2 6.SOUND OUTPUT STAGE WITH TDA7269A.2 7.BERTICAL OUTPUT STAGE W

2、ITH STV9379FA.2 8.VIDEO OUTPUT AMPLIFIER TDA6108.2 9.POWER SUPPLY (SMPS).3 10.MICROCONTROLLER SDA55XX.3 10.1.General Features .3 10.2.External Crystal and Programmable Clock Speed.3 10.3.Microcontroller Features.3 10.4.Memory.3 10.5.Display Features.3 10.6.Acquisition Features .4 10.7.Ports .4 11.CL

3、ASS AB STEREO HEADPHONE DRIVER TDA1308.4 12.SAW FILTERS.4 13.IC DESCRIPTIONS.5 13.1.LM317T.5 13.1.1.Description .5 13.1.2.Features.5 13.2.TDA1308T.5 13.2.1.General Description.5 13.2.2.Features.5 13.2.3.Pinning.6 13.3.MSP34X0G (MSP3410G).6 13.3.1.Description .6 13.3.2.Features.7 13.3.3.Pin connectio

4、ns .7 13.4.VDP313xY.8 13.4.1.Introduction.8 13.4.2.Features.9 13.4.3.Pin Connections and short descriptions.9 13.5.TEA6415C.10 13.5.1.General Description.10 13.5.2.Features.10 13.5.3.Pinning.11 13.6.STV9379FA.11 13.6.1.Description .11 13.6.2.Features.11 13.6.3.Pinning.11 13.7.TDA7269A.12 13.7.1.Desc

5、ription .12 13.7.2.Features.12 13.8.LM7800 (LM7805/LM7808).12 13.8.1.Description .12 13.8.2.Features.12 13.9.AT24C08.12 13.9.1.Description .12 13.9.2.Features.12 13.9.3.Pin Configurations.13 RadioFans.CN 收音机爱 好者资料库 ii AK45 Service Manual 01/12/2003 13.10.SDA5555.13 13.10.1.General definition.13 13.1

6、0.2.Features.13 13.11.MC44608.14 13.11.1.Description .14 13.11.2.General Features.15 13.11.3.Pin Connections.15 13.12.TCET1102G.16 13.12.1.Description .16 13.12.2.Applications.16 13.12.3.Features.16 13.13.TDA9885T.16 13.13.1.General Description.16 13.13.2.Features.16 13.13.3.Pinning.17 13.14.PI5V330

7、.17 13.14.1.General Description.17 14.AK45 CHASSIS PRODUCTION SERVICE MODE ADJUSTMENTS.18 14.1.SERVICE MENU .18 14.2.ADJUST MENU.18 14.3.OPTIONS MENU.30 Option 0. Video Processor Crystal Indication.30 Option 1. (0 x01) Video Processor Decoder Mode Register.30 Option 2. (0 x18) Video Processor Blanki

8、ng Control.30 Option 3. (0 x19) Video Processor Cathode Drive Level.31 Option 4. .31 Option 5. CTI Avaliable, Mono AVL.31 Option 6. .31 Option 7. OPTIONHOTELACTIVE, PLL_VST, PIP Zoom Mode, PIP Position.31 Option 8. IF Frequency .32 Option 9. Standard Available .32 Option 10. Scart, Combfilter, Telet

9、ext, Language.33 Option 11. PLL Tuner Control 1 Byte.33 Option 12. PLL Tuner Control 2 Low Byte.33 Option 13. PLL Tuner Control 2 Mid Byte.34 Option 14. PLL Tuner Control 2 High Byte.34 Option 15. PLL Tuner VHF LOW VHF HIGH Crossover Low Byte .34 Option 16. PLL Tuner VHF LOW VHF HIGH Crossover High

10、Byte.34 Option 17. PLL Tuner VHF HIGH UHF Crossover Low Byte .34 Option 18. PLL Tuner VHF HIGH UHF Crossover High Byte.34 Option 19. PIP PLL Tuner Control 1 Byte.35 Option 20. PIP PLL Tuner Control 2 Low Byte.35 Option 21. PIP PLL Tuner Control 2 Mid Byte.35 Option 22. PIP PLL Tuner Control 2 High B

11、yte.35 Option 23. PIP PLL Tuner VHF LOW VHF HIGH Crossover Low Byte.35 Option 24. PIP PLL Tuner VHF LOW VHF HIGH Crossover High Byte.35 Option 25. PIP PLL Tuner VHF HIGH UHF Crossover Low Byte.36 Option 26. PIP PLL Tuner VHF HIGH UHF Crossover High Byte.36 Option 27. Language Available 1.36 Option 2

12、8. Language Available 2.36 Option 29. Language Available 3 and Zoom Mode Available .36 Option 30. Country.37 Option 31. Prescaler MSP FM (AVL=OFF).37 Option 32. Prescaler MSP NICAM (AVL=OFF).37 Option 33. Prescaler MSP SCART (AVL=OFF).38 Option 34. Prescaler MSP I2S (AVL=OFF).38 Option 35. Not used .38 Option 36. Not used .38 Option 37. Reserved for USA .38 Option 38. TV Teletext Mode Sele