2-1
SECTION 2
ELECTRICAL
CONTENTS
ONE POINT REPAIR GUIDE ............................................................................................................................ 2-2
1. IF THERE IS NO SOUND OR HAVE A PROBLEM ON LCD. ............................................................... 2-2
2. IF THE SET DOESN’T BOOTING WHEN YOU TURN ON THE SET ................................................... 2-3
3. IF THE SET DOESN’T BOOTING WHEN YOU TURN ON THE SET ................................................... 2-4
4. IF THE SET DOESN’T BOOTING WHEN YOU TURN ON THE SET (LED DOES NOT TURN ON) ... 2-5
5. IF THE SET DOESN’T BOOTING WHEN YOU TURN ON THE SET (LED DOES NOT TURN ON) ... 2-6
6. IF THE SET DOESN’T BOOTING WHEN YOU TURN ON THE SET. .................................................. 2-7
7. IF THERE IS NO SOUND. ...................................................................................................................... 2-8
8. IF THE SET DOESN’T BOOTING WHEN YOU TURN ON THE SET ................................................... 2-9
9. IF THE SET DOESN’T BOOTING WHEN YOU TURN ON THE SET (LED DOES NOT TURN ON) . 2-10
10. NO SOUND FROM THE R ch SPEAKER. ........................................................................................... 2-11
11. NO SOUND FROM THE L ch SPEAKER. ............................................................................................ 2-12
12. IF NOT BOOTING WHEN YOU TURN ON THE SET. ......................................................................... 2-13
13. IF NOT BOOTING WHEN YOU TURN ON THE SET. ......................................................................... 2-14
14. IF NOT BOOTING WHEN YOU TURN ON THE SET. ......................................................................... 2-15
15. WIRED NETWORK CONNECTION ERROR. ...................................................................................... 2-16
16. PORTABLE FUNCTION DOESN’T WORKING .................................................................................... 2-17
17. OPTICAL FUNCTION DOESN’T WORKING ........................................................................................ 2-18
18. BLUETOOTH FUNCTION DOESN’T WORKING ................................................................................. 2-19
19. HDMI FUNCTION DOESN’T WORKING .............................................................................................. 2-20
20. Wi-Fi FUNCTION DOESN’T WORKING ............................................................................................... 2-21
21. WIRELESS WOOFER CONNECTION DOESN’T WORKING .............................................................. 2-22
ELECTRICAL TROUBLESHOOTING GUIDE ................................................................................................. 2-23
1. POWER / MICOM / LCD ....................................................................................................................... 2-23
2. Wi-Fi ...................................................................................................................................................... 2-24
3. AMP / PWM .......................................................................................................................................... 2-25
4. PAIRING BLUETOOTH ........................................................................................................................ 2-26
5. OPTICAL ............................................................................................................................................... 2-27
6. PORTABLE ........................................................................................................................................... 2-28
7. HDMI ..................................................................................................................................................... 2-29
WAVEFORMS OF MAJOR CHECK POINT .................................................................................................... 2-30
1. MPEG X-TAL ........................................................................................................................................ 2-30
2. PWM X-TAL .......................................................................................................................................... 2-30
3. MICOM (EEPROM) ............................................................................................................................... 2-31
4. MPEG .................................................................................................................................................... 2-31
WIRING DIAGRAM .......................................................................................................................................... 2-33
BLOCK DIAGRAMS ........................................................................................................................................ 2-35
1. SYSTEM BLOCK DIAGRAM ................................................................................................................ 2-35
2. POWER BLOCK DIAGRAM ................................................................................................................. 2-37
CIRCUIT DIAGRAMS ...................................................................................................................................... 2-39
1. MAIN - MICOM CIRCUIT DIAGRAM .................................................................................................... 2-39
2. MAIN - MPEG CIRCUIT DIAGRAM ...................................................................................................... 2-41
3. MAIN - MEMORY CIRCUIT DIAGRAM ................................................................................................ 2-43
4. MAIN - ADC & I/O CIRCUIT DIAGRAM ............................................................................................... 2-45
5. MAIN - DCDC CIRCUIT DIAGRAM ...................................................................................................... 2-47
6. AMP - PWM CIRCUIT DIAGRAM ......................................................................................................... 2-49
7. AMP - AMP CIRCUIT DIAGRAM .......................................................................................................... 2-51
8. FRONT CIRCUIT DIAGRAM ................................................................................................................ 2-53
9. KEY CIRCUIT DIAGRAM ..................................................................................................................... 2-55
CIRCUIT VOLTAGE CHART ........................................................................................................................... 2-57
PRINTED CIRCUIT BOARD DIAGRAMS ....................................................................................................... 2-59
1. MAIN P. C. BOARD DIAGRAM ............................................................................................................ 2-59
2. AMP P. C. BOARD DIAGRAM ............................................................................................................. 2-61
3. FRONT P. C. BOARD DIAGRAM ......................................................................................................... 2-61
4. KEY P. C. BOARD DIAGRAM .............................................................................................................. 2-61
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