Hitachi 55293DLB, Service Manual

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1
Table of Contents
1. INTRODUCTION .......................................................................................................................................................... 2
2. TUNER ........................................................................................................................................................................... 2
A. SI2157 TerrestrIal and Cable TV Tuner ...................................................................................................................... 2
B. M88TS2022 Satell ı te Tuner ........................................................................................................................................ 5
3. AUDIO AMPLIFIER STAGES ...................................................................................................................................... 6
A. MAIN AMPLIFIER (TAS5719) ...................................................................................................................................... 6
B. HEAD-PHONE AMPLIFIER STAGE .............................................................................................................................. 10
C. SUBWOOFER AMPLIFIER STAGE .............................................................................................................................. 11
4. POWER STAGE ........................................................................................................................................................... 16
5. MICROCONTROLLER (MSTAR MSD95C0H) ......................................................................................................... 30
6. VIDEO BACK-END PROCESSOR (MSTAR) ........................................................................................................... 37
7. 1Gb DDR3 SDRAM ..................................................................................................................................................... 41
8. 2Gb DDR3 SDRAM ..................................................................................................................................................... 42
9. 32Gbit (4G x 8 bit) NAND Flash Memory ................................................................................................................... 43
10. 16M-BIT [16M x 1] CMOS SERIAL FLASH EEPROM ............................................................................................ 45
11. Demodulator Stage ........................................................................................................................................................ 49
12. LNB supply and control IC ........................................................................................................................................... 53
13. Troubleshoot ı ng ............................................................................................................................................................ 54
A. No Backl ı ght Problem .............................................................................................................................................. 54
D. CI Module Problem .................................................................................................................................................. 56
E. Stay ı ng ı n Stand-by Mode ........................................................................................................................................ 58
F. IR Problem ................................................................................................................................................................ 58
G. Keypad Touchpad Problems .................................................................................................................................... 59
H. USB Problems ........................................................................................................................................................... 59
İ . No Sound Problem ................................................................................................................................................... 60
J. Standby On/Off Problem ......................................................................................................................................... 61
K. No S ı gnal Problem .................................................................................................................................................... 61
14. General Block D ı agram ................................................................................................................................................ 63
15. PLACEMENT OF BLOCKS ........................................................................................................................................ 64