LG S94T1-S Service Manual page 126

FIRMWARE UPDATE FOR WIRELESS DEVICE ............................................................................................. 5-2
1. WIRELESS RX UPDATE METHOD ....................................................................................................... 5-2
2. WIRELESS TX MODULE UPDATE METHOD ....................................................................................... 5-2
ONE POINT REPAIR GUIDE ............................................................................................................................ 5-3
1. NO POWER PROBLEM ......................................................................................................................... 5-3
2. NO SOUND ............................................................................................................................................. 5-5
ELECTRICAL TROUBLESHOOTING GUIDE ................................................................................................... 5-8
1. POWER SUPPLY ON SMPS BOARD .................................................................................................... 5-8
2. NO PAIRING ........................................................................................................................................... 5-9
3. NO SOUND ........................................................................................................................................... 5-10
WAVEFORMS .................................................................................................................................................. 5-11
WIRING DIAGRAM .......................................................................................................................................... 5-13
BLOCK DIAGRAM .......................................................................................................................................... 5-15
CIRCUIT DIAGRAMS ...................................................................................................................................... 5-17
1. SMPS CIRCUIT DIAGRAM .................................................................................................................. 5-17
2. AMP #1 CIRCUIT DIAGRAM ................................................................................................................ 5-19
3. AMP #2 CIRCUIT DIAGRAM ................................................................................................................ 5-21
PRINTED CIRCUIT BOARD DIAGRAMS ....................................................................................................... 5-23
1. SMPS P. C. BOARD ............................................................................................................................. 5-23
2. AMP P. C. BOARD ............................................................................................................................... 5-25
SECTION 5
WIRELESS RECEIVER PART
CONTENTS
5-1