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  DEPOT MAINTENANCE
stall replacement parts in the same positions
as the originals to avoid undesired coupling,
Complete rebuild of Power Supply PP-3514/U
spurious oscillations, and decrease in gain.
and/or its individual components may be ac-
b. For the procedures to replace METER
complished by depot maintenance facilities
RANGE switch S3, SHORT CIRCUIT CUR-
when authorized. Rebuild action will include
RENT MA switch S2, or transformer T1, re-
all repairs, rebuild, and replacement operations
fer to paragraphs 3-2, 3-3, and 3-4.
necessary to make the equipment suitable for
return to DA supply system stocks for reis-
c. When replacing power transistor Q1,
sue to using organizations as equipment equiv-
note how the nylon bushings are installed in
lent to new material. Detailed procedures for
the mounting holes and make sure that they
accomplishing the repairs and adjustments es-
are reinstalled correctly on the replacement
tablished in the preceding sections of this man-
transistor. Check the replacement transistor
ual, and such additional repair or rebuild oper-
for burrs, which may cut through the ano-
ations as deemed necessary, will be established
dized surface of the mounting plate. Check the
by the facility performing the work.
surface of the mounting plate; if it is damaged,
the maximum voltage at which the power sup-
ply may be operated off ground potential may
a. Before removing a part in the PP-3514/U,
be reduced.
note the position of the part and its leads. In-
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