XW-HTD640
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CONTENTS
SAFETY INFORMATION ..................................................................................................................................... 2
1. SPECIFICATIONS ............................................................................................................................................ 5
2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................ 6
2.1 PACKING SECTION .................................................................................................................................. 6
2.2 TRANSMITTER SECTION......................................................................................................................... 8
2.3 WIRELESS SPEAKER SECTION........................................................................................................... 10
2.4 AMP SECTION ........................................................................................................................................ 12
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .......................................................................................... 14
3.1 BLOCK DIAGRAM ................................................................................................................................... 14
3.2 OVERALL WIRING DIAGRAM................................................................................................................. 16
3.3 TX ASSY .................................................................................................................................................. 18
3.4 MAIN, POWER, OP, PRI and SW ASSYS ............................................................................................... 20
3.5 AMP and REGULATOR ASSYS .............................................................................................................. 22
3.6 TX MODULE(1/3) ..................................................................................................................................... 24
3.7 TX MODULE(2/3) ..................................................................................................................................... 26
3.8 TX MODULE(3/3) ..................................................................................................................................... 28
3.9 RX MODULE(1/4) .................................................................................................................................... 30
3.10 RX MODULE(2/4) .................................................................................................................................. 32
3.11 RX MODULE(3/4) .................................................................................................................................. 34
3.12 RX MODULE(4/4) .................................................................................................................................. 36
3.13 WAVEFORMS ........................................................................................................................................ 38
4. PCB CONNECTION DIAGRAM ..................................................................................................................... 39
4.1 TX ASSY .................................................................................................................................................. 40
4.2 OP and SW ASSYS ................................................................................................................................. 41
4.3 MAIN ASSY ............................................................................................................................................. 42
4.4 POWER and PRI ASSYS......................................................................................................................... 44
4.5 AMP and REGULATOR ASSYS .............................................................................................................. 46
4.6 TX MODULE ............................................................................................................................................ 48
4.7 RX MODULE............................................................................................................................................ 50
5. PCB PARTS LIST ........................................................................................................................................... 52
6. ADJUSTMENT ............................................................................................................................................... 56
7. GENERAL INFORMATION ............................................................................................................................. 57
7.1 DIAGNOSIS ............................................................................................................................................. 57
7.1.1 TROUBLESHOOTING ........................................................................................................................ 57
7.1.2 NOTES ON REPLACE OF PARTS ..................................................................................................... 58
7.1.3 DIAGNOSIS OF THE AMPLIFIER SECTION ..................................................................................... 58
7.1.4 PROTECTION CIRCUIT ..................................................................................................................... 59
7.1.5 DISASSEMBLY ................................................................................................................................... 61
7.2 IC ............................................................................................................................................................. 64
8. PANEL FACILITIES ........................................................................................................................................ 73
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