TM 11-6625-1683-15
4-5. Daily Preventive Maintenance Checks and Services Chart
sequence
Procedure
Item to be inspected
Reference
No.
Inspect external surfaces for dust, dirt, rust,
1
General inspection ________
and corrosion. Clean as required.
Damage inspection ________
Inspect exposed components for damage -------
2
During operation, check action of switches and
Controls _________________
3
potentiometers for smooth response without
binding, backlash, or looseness. All knobs
must be secure.
Preliminary operational ___
4
Set all ON/OFF switches to OFF. Press and
release CIRCUIT BREAKERS. Set RCVR-
XMTR switch breaker to ON. Plug INPUT
POWER cable into a 115-volt ac power re-
ceptacle (if available ). Connect Battery Box
CY-3871/PPS-5 or Power Supply PP-4450/
PPS-5 to the 6 VDC connector on the INPUT
POWER section.
Set to DC ON. Check to see that clear DC ON
INPUT POWER switch ---
5
indicator light lights.
Set to AC ON. Check to see that red AC ON
6
INPUT POWER switch ---
indicator light lights.
4-6.. Weekly Preventive Maintenance Check and Services Chart
Sequence
Reference
Procedure
Item to be inspected
No.
1
Check for completeness of equipment -----------
Completeness ______________
Accessories ________________
Inspect cords and cables for cuts, kinks, breaks,
2
crushing, fraying, and improper positioning.
Replace, if necessary.
3
External items ------------
Inspect external items such as mounting screws,
latches, handles, and hinges for looseness,
loss, or breakage. Tighten or replace as
required.
Inspect exposed metal surfaces for rust and
4
Metal surfaces ____________
corrosion. Clean and touchup paint as re-
quired.
4-7. Monthly Preventive Maintenance Checks and Services Chart
Sequence
Procedure
Reference
Item to be inspected
No.
1
Remove test panel, clean inside of CY-6208/
Cane and back of test panel----
PPS-5 and back of test panel, and reinstall
test panel.
2
a. Remove block 700 power converter from test
Test
panel
--------------
a. Para 4-14 b;
panel, clean out the well, and reinstall
power converter.
b. Remove block 2300 power converter, clean
b. Para 4-14 c;
out the well, and reinstall power converter.
Top half of case -----
3
Clean out accessory kit compartments with
brush or vacuum cleaner.
AGO 79I8A
4-2
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