AR 10044393, Operating And Service Manual, Page: 13 / 30

i
TABLE OF CONTENTS
TABLE OF CONTENTS .................................................................................................. i
1. GENERAL INFORMATION ............................................................................. 1
1.1 General ................................................................................................................... 1
1.2 Power Supplies ...................................................................................................... 1
1.3 Specifications ......................................................................................................... 1
2. OPERATING INSTRUCTIONS ........................................................................ 5
2.1 General ................................................................................................................... 5
2.2 Amplifier Operation ............................................................................................... 5
2.3 Power On Sequence ............................................................................................... 6
3. THEORY OF OPERATION .............................................................................. 7
3.1 Introduction ............................................................................................................ 7
3.2 Amplifier Section ................................................................................................... 7
3.2.1 A1 Pre-Amplifier Assembly (Schematic No. 10041189, 10041352, 10041054) .. 7
3.3 Power Supply ......................................................................................................... 8
4. MAINTENANCE ................................................................................................. 9
4.1 General Maintenance Information ......................................................................... 9
4.2 Cover and Circuit Board Removal ......................................................................... 9
4.3 Troubleshooting ..................................................................................................... 9
4.3.1 Green Power Indicator LED Doesn't Light .......................................................... 10
4.3.2 Low or No RF Power Output (DC Test) .............................................................. 10
4.3.3 Low or No RF Power Output (RF Test) .............................................................. 11
4.4 Servicing Etched Circuit Boards .......................................................................... 12