TESTING (Cont)

TM 10-1670-265-12&P

T.O. 13C7-1-21

4-17. ASPSU - Test (Cont)

4-17

TESTING (Cont)

2. Operational test procedures (Cont).

c. Testing.

(1) Place the AC POWER switch (1) on the test

set to the ON position. The PILOT light (2) should come

on.

(2) Place PUMP switch (3) to the ON position.

(3)

Place ALT.

INCR.

switch (4) in the up

position.

NOTE

If altimeter fails to rise, apply light hand pressure to

the chamber door.

(4) Observe altimeter (5). When altimeter

reaches 10,000 feet, place ALT. INCR. switch in the

down position.

(5) Place ASPSU TEST switch (6) to the ON

position. Both the green RUN light (7) and POWER

SUPPLY CHECK light (8) should come on.

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