AR 1000W1000G, Руководство по эксплуатации и обслуживанию, Страница: 16 / 70

Model 1000W1000G
ii
2.6.6.12 RF Gain .......................................................................................................... 26
2.6.6.13 Faults (1000W1000G) ................................................................................... 26
2.6.6.14 Operating Hours (RF On) .............................................................................. 27
2.6.6.15 Operating Hours (Power On) ......................................................................... 27
2.6.6.16 AC Power-On Defaults .................................................................................. 28
3. THEORY OF OPERATION ............................................................................. 29
3.1 Introduction .......................................................................................................... 29
3.2 RF Amplifier Operation (Schematic 10046373) .................................................. 29
3.2.1 A1 Variable Gain Amplifier (Schematics 10033907, 10031968, 10035521) ...... 29
3.2.1.1 A1 Pre-Amplifier PWB Assembly (Schematic 10033907) ........................... 29
3.2.1.2 A2 High Isolation Switch (Schematic 10031968) ......................................... 29
3.2.1.3 A3 Two-Watt Amplifier (Schematic 10035521) ........................................... 29
3.2.3 A2 Driver Amplifier (Schematic 10036697) ........................................................ 30
3.2.4 A3 Two-Way Splitter ........................................................................................... 30
3.2.5 A4, A5 Eight-Way Splitter ................................................................................... 30
3.3 A6-A21 Final Amplifiers (Schematic 10036697) ................................................ 30
3.4 Power Supplies, Driver Amplifier (PS1 thru PS4) ............................................... 31
3.5 A22 16-Way Combiner ........................................................................................ 31
3.6 A23 Dual Directional Coupler (Schematic 10046373) ........................................ 31
3.7 A24 Detector Assembly (Schematic 10045651) .................................................. 31
3.8 Control System ..................................................................................................... 32
3.8.1 A25 ALC Board (Schematic 10023927) .............................................................. 32
3.8.2 A26 Display Assembly, 4.3”, LCD (Schematics 10029679, 10030013) ............. 32
4. TROUBLESHOOTING AND REPAIR ........................................................... 33
4.1 General Maintenance Information ........................................................................ 33
4.2 Disassembly Procedure ........................................................................................ 33
4.3 Troubleshooting ................................................................................................... 34
4.3.1 General - Reading Faults ...................................................................................... 35
4.3.2 The Unit Cannot Be Operated Remotely .............................................................. 35
4.3.3 Thermal Fault (Schematic 10046373) .................................................................. 35
4.3.4 Interlock Fault (Schematic 10046373) ................................................................. 35
4.3.4.1 Interlock Fault ................................................................................................ 36
4.3.4.2 AC Interlock Fault ......................................................................................... 36
4.3.5 Power Supply Faults (Schematic 10046885) ....................................................... 36
4.3.5.1 PS3 Fault (POWER FAIL) ............................................................................ 36
4.3.5.2 PS4 Fault (POWER FAIL) ............................................................................ 36
4.3.6 Amplifier Faults (Schematics 10046885 and 10045396) ..................................... 37
4.3.7 ALC Fault ............................................................................................................. 37
4.3.8 Low or No Power Output (DC Tests) (Schematic 10046885) ............................. 37
4.3.9 Low or No Power Output (RF Test) (Schematic 10045618) ............................... 38
4.4 Locating and Replacing Modules ......................................................................... 43
Appendix A. Installing Software Upgrades ................................................................ 47
FIGURES
2-1 Digital Control Panel (DCP) Features .................................................................. 10
2-2 Rear Panel Features .............................................................................................. 11
2-3 Touch Panel Display Menu Map .......................................................................... 13
4-1 Typical Response at 0 dBm Input ........................................................................ 38
4-2 Typical Response at -20 dBm Input ..................................................................... 39
4-3 Input of Two-Way Splitter to RF Output ............................................................. 39