TR850 Service Manual
6. ADJUSTMENT ........................................................................................................................................ 44
6.1. P
REPARATION ........................................................................................................................................ 44
6.2. M
ETHOD OF MODULATION AND TEST ...................................................................................................... 44
6.2.1.
Local Oscillator Adjustment ................................................................................................................................ 44
6.2.2. Tx Adjustment........................................................................................................................................................ 45
6.2.3. Rx Adjustment ....................................................................................................................................................... 47
7. MAIN TECHNICAL FUNCTIONS AND SPECIFICATIONS ................................................................... 49
8. MAINTENANCE AND TEST EQUIPMENT ............................................................................................ 51
9. TROUBLESHOOTING ............................................................................................................................ 52
APPENDIX1 400-470MHZ UHF BAND SPARE PART LIST..................................................................... 55
T
ABLE1 PARTS LIST (RX MODULE SECTION) .................................................................................................. 55
T
ABLE2 PARTS LIST (TX MODULE SECTION) ................................................................................................... 65
T
ABLE3 PARTS LIST (POWER AMPLIFICATION SECTION) .................................................................................. 72
T
ABLE4 PARTS LIST (BASEBAND MAINBOARD) ................................................................................................ 76
T
ABLE5 PARTS LIST (FRONT PANEL) .............................................................................................................. 84
T
ABLE6 PARTS LIST (POWER BOARD) ............................................................................................................ 84
T
ABLE7 PARTS LIST (ACCESSORY BOARD) ..................................................................................................... 85
F
IGURE 1 RX MODULE TOP BOARD PCB VIEW............................................................................................... 86
F
IGURE 2 RX MODULE BOTTOM BOARD PCB VIEW ........................................................................................ 87
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IGURE 3 TX MODULE TOP BOARD PCB VIEW ............................................................................................... 88
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IGURE 4 POWER AMPLIFIER MODULE TOP BOARD PCB VIEW ....................................................................... 88
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IGURE 5 POWER AMPLIFIER MODULE BOTTOM BOARD PCB VIEW ................................................................ 89
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IGURE 6 BASEBAND MAINBOARD TOP BOARD PCB VIEW ............................................................................. 90
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IGURE 7 BASEBAND MAINBOARD BOTTOM BOARD PCB VIEW ....................................................................... 91
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IGURE 8 FRONT PANEL TOP BOARD PCB VIEW ............................................................................................ 92
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IGURE 9 FRONT PANEL BOTTOM BOARD PCB VIEW ..................................................................................... 92
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IGURE 10 POWER BOARD TOP BOARD PCB VIEW ........................................................................................ 93
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IGURE 11 ACCESSORY BOARD TOP BOARD PCB VIEW ................................................................................. 94
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IGURE 12 ACCESSORY BOARD BOTTOM BOARD PCB VIEW .......................................................................... 94
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IGURE 13 RX MODULE SCHEMATIC DIAGRAM ............................................................................................... 95
F
IGURE 14 TX MODULE SCHEMATIC DIAGRAM ............................................................................................. 102
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IGURE 15 POWER AMPLIFIER MODULE SCHEMATIC DIAGRAM ..................................................................... 107
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IGURE 16 BASEBAND MAINBAORD SCHEMATIC DIAGRAM ............................................................................ 110
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IGURE 17 FRONT PANEL SCHEMATIC DIAGRAM........................................................................................... 125
F
IGURE 18 POWER BOARD SCHEMATIC DIAGRAM ........................................................................................ 126
F
IGURE 19 ACCESSORY SCHEMATIC DIAGRAM ............................................................................................. 127
APPENDIX2 136-174 MHZ VHF BAND SPARE PART LIST .................................................................. 128
T
ABLE 1 PART LIST(RX MODULE SECTION) .................................................................................................. 128
T
ABLE 2 PART LIST(TX MODULE SECTION) .................................................................................................. 145
T
ABLE 3PART LIST(POWER AMPLIFICATION MODULE SECTION) ..................................................................... 151
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