a. I n s p e c t t h e t e a t s e t f o r d a m a g e i n c u r r e d d u r i n g
QB86062-1 to test set POWER-INPUT 10 connector.
shipment. If the equipment has been damaged, report
( 2 ) If a 26-volt, ac aircraft power source is availa-
the damage on DD Form 6.
b l e , use one of the following three power source cables
b. C h e c k t h e e q u i p m e n t a g a i n s t t h e c o m p o n e n t l i s t -
i n g (table l-l) and against the packing slip to see if the
(QB86031-1), F (QB86032-1),
shipment is complete. Report all discrepancies in ac-
Refer to paragraph 2-7.
cordance with the instructions of TM 38-750. The
equipment should be placed in service even though a
T h e self-test is a functional check which, if performed
minor assembly or part that does not affect proper
successfully, indicates that all component of the teat
functioning is missing.
s e t are functioning properly. Refer to table 2-1 for con-
c. C h e c k t o s e e w h e t h e r t h e e q u i p m e n t h a s b e e n
trols and indicators.
modified (Equipment which has been modified will
a. C o n n e c t p o w e r s o u r c e c a b l e A t o 1 1 5 - v o l t , 4 0 0 -
h a v e the MWO number on the front panel near the no-
Hertz, single-phase power source or use 26-volt ac
menclature place.) Check also to see whether all cur-
a i r c r a f t power source with applicable power source ca-
rently applicable MWO's have been applied. (Current
MWO's applicable to the equipment are listed in DA
c. S e t T E S T S E L 2 s w i t c h t o T R A N S .
d. R o t a t e A M P L I F I E R G A I N 8 c o n t r o l f u l l y c l o c k -
Tools required for installation of the TTU-23/E are
contained in Tool Kit, Electronic Equipment
e. Set POWER 17 switch to ON, and allow the unit a
l-minute warmup interval.
f. B y
a. Place test set on a suitable work surface near unit
( T R A N S ) B201 in 10-degree increments from O to 360
d e g r e e s . At each increment, check the setting of indica-
b. R e m o v e a l l e l e c t r i c a l c a b l e a s s e m b l i e s f r o m
t o r (IND) B202. The indicator must track the transmit-
storage compartment in case.
ter within ±15 minutes.
c. Check to see that POWER 17 switch is at off
g. Set TEST SET 2 switch to DIFF, and check the
( d o w n ) position.
setting of indicator B202. The indicator must read 0
d. C o n n e c t p o w e r s o u r c e i n e i t h e r o f t w o w a y s , a s
h. S e t P O W E R 1 7 s w i t c h t o o f f .
(1) If a 115-volt, 400-Hertz, single-phase power
i. Remove teat plug and power cable
o f the teat set. These controls are illustrated in figure
A l l operator's controls are located on the control panel
2 - 1 and described in table 2-1.