TM 11-6720-242-35
in TAM 11-6720-24212 and use the applicable
the maintenance functions assigned to each category of
schematic diagram contained in this manual, to trace
maintenance.
the circuits.
3-3. Test Equipment, Tools, and Materials Required
(9) Tool and test equipment requirements.
a. General. The chart in b below lists the special
The tools and test equipment supplied to the various
levels of maintenance are designated in the tool and
test equipment and tools required for servicing the
test equipment requirement list.
camera at the direct support level. The materials are
listed in c below. Special test instruments used to test
3-2. Direct Support Procedures
plug-in boards are not furnished but the methods of
making them are shown in figures 3-1 and 3-2. In
This section contains the data, instructions, and
addition to the special equipment, the following
procedures for the use of direct support maintenance
instruments and tools are required:
personnel. The information includes troubleshooting
b. Test Equipment.
procedures and charts, disassembly, replacement and
reassembly procedures, and bench tests. This
Nomenclature and/or type number
FSN
information, a supplement to basic organizational data
or procedure, should aid ill sectionalizing, localizing or
Test Set, Camera System LS-86A......... 6760-922-2680
isolating a fault at the direct support level. For example,
Counter Electronic Digital
the test set will check operational status of most
AN/USM-207..................................... 6625-911-368
systems while a camera is installed in the aircraft and in
Voltmeter, Digital AN/GSM-646625-807-2264
operation. Customarily, the results of these checks will
Oscilloscope AN/USM-140A.................. 6625-987-6603
be sufficient to indicate at least the area of trouble, and
Tool Kit, Photographic
this will enable direct support personnel to isolate it to
Repairman TK-77/GF...................... 5180-752-9068
an assembly or part. To facilitate bench testing when
Tool Kit, Photographic
using the test set, three test cables are provided; figure
Repairman ..................... TK-109/GF5180-856-9653
320 identifies the cables and shows their connections.
Multimeter AN/USM-223 ....................... 6625-999-7465
When malfunctioning in the control panel or the camera
Strobotac GR1531
control is not readily traceable to a system or circuit in
Hand Blower ......................................... 5120-284-4612
the component, perform the continuity checks contained
c. Materials.
Federal
Material
Part or Type No
stock No
Vendor
Use
Adhesive ...................... M 6123 ............................ .................................... 89616 ........... Securing photocell window
glass.
Electrical insulating
MIL-I-46058 Type ER
Coating electrical board
compound
(FS10006)
assemblies.
Epoxy adhesive............ FS10080.......................... .................................... ..................... Securing shielding
gaskets.
Glyptal adhesive .......... 7526F .............................. 8040-636-1165............. G. E. Co. ...... Securing shielding
screws.
Silicone grease ............ DC340 ............................. -.8030-9983337............ -.71984 ......... Coating between metal
mounting surfaces, as
directed.
Solvent cleaner - .......... Chlorothene Nu ............... Dow Chem. .................. ..................... Cleaning surfaces to be
Co.
coated with electrical
insulating compound.
d. Special Tools and Test Equipment.
e., Fabricating Power Supply Board Assembly
Test Fixture.
Test equipment
Use
(1) The power supply test fixture is not
Power Supply Test Fixture Checks circuits of power
supplied as a camera component. It must be made.
supply board assembly.
Heat Sink Assembly Test
Checks circuits of scan
(2) See figure 3-1 and construct a test fixture
Fixture (fig. 3-2)
heat sink assembly.
that permits the power supply board assem-
3-2
