TM 11-6625-486-14&P
perform all the actions in the Control settings columns;
6-31. Physical Tests and Inspections
then, perform each specific procedure and verify it
a. Test Equipment and Materials. None required.
against its performance standard.
b. Test Connections and Conditions.
c. Tools and test equipment required for
(1) No connections are necessary.
maintenance at general support maintenance are listed
(2) Remove the frequency meter from its
in appendix C.
case.
6-30. Modification Work Orders
The performance standards in tables 6-4 through 6-14
are based on the assumption that all MWOs applicable
to the equipment have been applied. A listing of current
MWOs will be found in DA Pam 25-30.
Control Settings
Step
No.
Test Equipment Equipment under test
Performance Standard
Test Procedure
1
Controls may
a. Inspect case, chassis, and panel for damage,
aa. No damage evident or parts
be in any
missing parts and condition of paint.
missing. External surfaces to be
position.
NOTE
painted will not show bare metal.
Touchup painting is recommended in-
Panel lettering will be legible.
stead of refinishing whenever practical;
screw heads, jacks, receptacles, and other
plated parts will not be plated or
polished with abrasives.
Inspect all controls and mechanical assemblies for b
b. Screws, bolts, and nuts will be
b.
loose or missing screws, bolts, and nuts.
.
tight. None missing.
c. Inspect all connectors, receptacles, fuseholders,
cc. No loose parts or damage. No
dial glass, and panel meter for looseness, damage, . missing parts.
or missing parts.
2
a. Rotate all panel controls throughout their limits of
controls may
aa. Controls will rotate without binding
N/A
be in any
travel.
or excessive looseness.
position.
b. Inspect filmstrip mechanism and dial drive system bb. Filmstrip mechanism and dial
for damage, binding, and for proper operation.
drive system will operate properly
.
without evidence of damage.
cC. Switches will operate properly.
c. Operate all panel switches, including the battery
NOTE
.
power interlock switch above the panel meter.
The battery power in-
terlock switch is spring-
loaded and should spring
outward when released.
b. Test Connections and Conditions. Connect
6-32. Frequency Drift with Change in
the equipment as shown in figure 6-16.
Line Voltage
c. Procedure. Follow the procedures given in
a. Test Equipment and Material.
(1) Variable Power Transformer CN-16/U.
(3) Frequency Meter AN/USM-26(*) with
Frequency Meter Subassembly MX-1637A/U.
.
Change 2
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