User Manual

MXi201U TECHNICAL SERVICE MANUAL
TSM20-365 Rev 2 July 17, 2007 ii MXi201U
CONTENTS
TSM20-365 MXi201U TECHNICAL SERVICE MANUAL
1 MXi201U AMPLIFIER–INTRODUCTION..................................................................................................................1
2 SAFETY NOTICES..........................................................................................................................................................2
2.1 BERYLLIUM OXIDE WARNING ......................................................................................................................................2
2.2 OTHER TOXIC MATERIALS ...........................................................................................................................................2
2.3 DANGEROUS VOLTAGES ...............................................................................................................................................2
2.3.1 Switch to Safety....................................................................................................................................................3
3 LARCAN PARTS, ASSEMBLIES, ASSEMBLY DRAWINGS AND SCHEMATIC NUMBERS...........................5
3.1 VENDOR STANDARD PART NUMBERS...........................................................................................................................5
3.2 LARCAN NUMBERS FOR PARTS, ASSEMBLIES AND DOCUMENTATION .......................................................................5
3.3 LEADED RESISTORS......................................................................................................................................................6
3.4 SURFACE MOUNT RESISTORS 1/4W AND LESS .............................................................................................................6
3.5 SURFACE MOUNT CAPACITORS ....................................................................................................................................7
3.6 PARTS LISTS .................................................................................................................................................................7
3.6.1 Production Changes.............................................................................................................................................7
FIGURES
FIGURE 1 MXI AMPLIFIER HEATSINK ASSEMBLY ........................................................................................................................1
PUB06-78 MXi DUAL PALLET OPERATIONS AND MAINTENANCE
1 MXI DUAL PALLET AMPLIFIER ...............................................................................................................................1
2 MXI CONTROLLER.......................................................................................................................................................2
3 AMPLIFIER INSTALLATION AND STARTUP.........................................................................................................4
3.1 BEFORE APPLYING AC TO THE UNIT ............................................................................................................................4
3.2 APPLYING AC TO THE UNIT..........................................................................................................................................4
3.3 BEFORE TURNING THE AMPLIFIER ON .........................................................................................................................5
3.4 AMPLIFIER ON SEQUENCE............................................................................................................................................6
3.4.1 Turning ON MXi Amplifier ..................................................................................................................................6
4 TEST AND TROUBLESHOOTING ..............................................................................................................................7
4.1 BENCH TEST PROCEDURES ...........................................................................................................................................7
4.1.1 Front-End Module Bench Test Procedure...........................................................................................................7
4.1.2 IPA1 Bench Test Procedure.................................................................................................................................7
4.1.3 Driver 21B1751 Bench Test Procedure...............................................................................................................8
4.1.4 PA Pallet 11A2142G1 Bench Test Procedure......................................................................................................8
4.2 BASIC TROUBLESHOOTING TECHNIQUES ......................................................................................................................8
4.2.1 Amplifier Completely OFF...................................................................................................................................8
4.2.2 No RF Output.......................................................................................................................................................8
4.2.3 Output Reduced to 25%.......................................................................................................................................8
5 MAINTENANCE..............................................................................................................................................................9
5.1 DAILY...........................................................................................................................................................................9
5.2 MONTHLY.....................................................................................................................................................................9
5.3 SEMI-ANNUALLY AND ANNUALLY...............................................................................................................................9
5.4 TRANSMITTER COOLING SYSTEM .................................................................................................................................9
6 SERVICE.........................................................................................................................................................................10