TM 11-6625-1683-15
Power Converter Test) Indicators
3-22. Block 2300 (Control-Indicator
Function
Control or indicator
I
+35 test jack (red) . . . . . . . . . . . . . . ..- Provides connection to pin E of block 2300 connector for measurement of
+ 35-volt output of block 2300 converter.
+12 test jack ______________________ Provides conection to pins H and D of block 2300 connector for measure-
ment of + 12-volt output of block 2300 converter.
12 test jack (purple) _______________ Provides connection to pins F and C of block 2300 connector for measure-
ment of -- 12-volt output of block 2300 converter.
GND test jack (black) . . . . . . . . ..- Provides connection to pins A and K and to ground to provide ground
reference for measuring output voltages of block 2300 converter.
Section Il. OPERATION UNDER USUAL CONDITIONS
to ON, and then set the INPUT POWER
323. Starting procedure
switch to DC ON; the clear DC ON indicator
a. Check to see that all 14 ON/OFF test
light will light.
switches are at OFF and that the RCVR-
XMTR switch breaker is off (down).
324. Operating Procedures
b. If the test panel is connected to a 115-volt
Use the test panel and accessories of Test
ac power source, press and release the MAIN
F a c i l i t i e s Kit MK980/PPS5 in accordance
PWR, CONTRO, and CONT-IND push break-
with the instructions in the technical manual
e r s , set the RCVR-XMTR switch breaker to
covering the radar set.
ON, and then set the INPUT POWER switch
to AC ON; the red AC ON indicator light will
325. Stopping Procedure
light.
c. If the test panel is connected to a dc
b. Set the RCVR-XMTR switch breaker to
p o w e r source (Battery Box CY3871/PPS5
its off (down) position.
or Power Supply PP4450/PPS5), press and
c. Check to see that all 14 ON/OFF switches
r e l e a s e the CONTROL and CONT-IND push
are at OFF.
breakers, set the RCVR-XMTR switch breaker
Section Ill. OPERATION UNDER UNUSUAL CONDITIONS
densation on the surface or interior compo-
3-26. Operation Under Arctic Conditions
n e n t s . Wipe away any moisture that could
T e s t Facilities Kit MK980/PPS5 is not
c a u s e electrical leakage to develop between
affected by exposure to arctic temperature con-
points where voltage differences exist.
ditions. However, the test panel must be pro-
tected against the formation of frost deposits
which might prevent the use of switches and
3-28. Operation in Desert Climates
controls or obstruct contact openings in the
P r o t e c t the equipment against sand and
connectors, t h e r e b y i n t e r f e r i n g w i t h t h e i r
d u s t . As often as necessary, use a vacuum
proper mating to the interconnecting cables.
cleaner and soft brush to remove all traces of
3-27. Operation Under Tropical Conditions
sand or grit, especially in the connectors and
test jacks.
Protect the equipment from excessive con-
3-11
AGO 7918A
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