TM 11-5820-922-40-1
AMPLIFIER-CONVERTER AM-6879/URC
SECTION I
INTRODUCTION
INTRODUCTION.
1.
Disassembly and Reassembly
4-2. This chapter presents detailed
2.
Cleaning and Examination
maintenance data to assist the techni-
cian in maintaining the amplifier-
Performance Test and
3.
converter A1 (fig 4-1). The data
Troubleshooting
provided enables fault isolation to a
removable component or component group.
4.
Repair and Replacement
Troubleshooting information, repair
data, and alignment procedures are
Component Location and Parts List
5.
included for complete maintenance.
6.
Maintenance Diagrams (schematic,
power distribution, test setup,
4-3. The amplifier-converter or Maint Kit
and performance test flowchart.
OA-9163/GRC-193A is used as a maintenance test
bed. Operating power is supplied to the best bed via a
fabricated power cable (fig 3-10A) which con-
TEST EQUIPMENT.
nects +28v to the amplifier-converter.
The amplifier-converter can be turned on
with the switch on the fabricated power
required to test the amplifier-converter;
on/off switch connector (fig 3-10D).
equivalent test equipment may be used.
from the amplifier-converter using a fab-
SPECIAL TOOLS AND MATERIALS.
ricated card extender cable (fig 3-10B)
for component access during test and
4-7. Table 4-2 lists the special tools
troubleshooting. Maintenance procedures
and cables used in the repair and testing
for the amplifier-converter are pre-
of the amplifier-converter.
sented in each chapter as follows:
TEST EQUIPMENT
NOTES: 1.
Equivalent test equipment may be used.
Use only test equipment that is properly calibrated. Failure to do so
2.
may provide erroneous or misleading performance or fault indications.
Designation
Name
Quantity
CP-843P/U
1
Frequency Counter
AN/URM-127
1
Audio Oscillator
Hewlett-Packard
HP-6439B
Power Supply, DC
1
Simpson 260-6P
1
