AR 10046836, Operating And Service Manual

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Model 500W1000C
ii
2.6.6.13 Faults (500W1000C) ...................................................................................... 24
2.6.6.14 Operating Hours (RF On) .............................................................................. 25
2.6.6.15 Operating Hours (Power On) ......................................................................... 25
2.6.6.16 AC Power-On Defaults .................................................................................. 26
3. THEORY OF OPERATION ............................................................................. 27
3.1 Introduction .......................................................................................................... 27
3.2 RF Amplifier Operation ....................................................................................... 27
3.2.1 A1 Variable Gain Amplifier (Schematic No. 10033908, 10031969, 10036858) . 27
3.2.1.1 A1 Pre-Amplifier PWB Assembly (Schematic 10033908) ........................... 27
3.2.1.2 A2 High Isolation Switch (Schematic 10031969) ......................................... 27
3.2.1.3 A3 Two-Watt Amplifier ................................................................................ 27
3.2.2 A2 Driver Amp and A6-A13 Final Amplifiers (Schematic 10045396) ............... 28
3.2.3 A5 Eight-Way Splitter .......................................................................................... 28
3.2.4 A14 Eight-Way Combiner .................................................................................... 28
3.2.5 A15 Dual Directional Coupler ............................................................................. 28
3.2.6 A16 Dual Detector Assembly (Schematic 10045651) ......................................... 29
3.3 Power Supplies (PS1, PS2 and PS3). ................................................................... 29
3.4 Control System ..................................................................................................... 29
3.4.1 A18, A19 Display Assembly, 4.3”, LCD (Schematics 10045618, 10030013) .... 29
3.4.2 A20 Interface Board (Schematic #10020073) ...................................................... 29
3.4.3 A17 ALC Board (Schematic #10023927) ............................................................ 30
4. MAINTENANCE ............................................................................................... 31
4.1 General Maintenance Information ........................................................................ 31
4.2 Disassembly Procedure ........................................................................................ 31
4.3 Troubleshooting ................................................................................................... 32
4.3.1 General - Reading Faults ...................................................................................... 33
4.3.2 The Unit Cannot Be Operated Remotely.............................................................. 33
4.3.3 Thermal Fault (Schematic Diagram No 10045618) ............................................. 33
4.3.4 Interlock Fault (Schematic Diagram No. 10045618) ........................................... 34
4.3.5 Power Supply Faults (Schematic Diagram No. 10045618) .................................. 34
4.3.5.1 PS1 Fault (DC Fault) ..................................................................................... 34
4.3.5.2 PS2 Fault (POWER FAIL) ............................................................................ 34
4.3.5.3 PS3 Fault (POWER FAIL) ............................................................................ 34
4.3.6 Amplifier Faults (Schematic Diagram Nos. 10045618 and 10045396) ............... 35
4.3.7 ALC Fault ............................................................................................................. 35
4.3.8 Low or No Power Output (DC Tests) (Schematic Diagram No. 10045618) ........ 35
4.3.9 Low or No Power Output (RF Test) (Schematic Diagram No. 10045618) .......... 36
FIGURES
2-1 Digital Control Panel (DCP) Features .................................................................... 8
2-2 Rear Panel Features ................................................................................................ 9
2-3 Touch Panel Display Menu Map .......................................................................... 11
4-1 Typical Response @ 0dBm Input ......................................................................... 36
4-2 Typical Response @ -20 dBm Input .................................................................... 37
4-3 Typical Response: Input A3-Front Panel RF Output ........................................... 38
4-4 Typical Module Response .................................................................................... 38
4-5 Typical Four-Way Splitter Insertion Loss ............................................................ 39
4-6 Typical Eight-Way Combiner Insertion Loss ....................................................... 39
4-7 Typical Eight-Way Combiner Return Loss: Combined Output Port ................... 39
4-8 Typical A2 Driver Module Response ................................................................... 40
4-9 Typical A1 Pre-Amplifier Response .................................................................... 40