 |
|||
|
|
|||
|
Page Title:
Converter and Control Tray A4, Trouble Isolation Chart |
|
||
| ||||||||||
|
|  TM 11-6625-847-12
step
Control setting and
Performance standard and
No.
Operation of test
operation of equipment
reference
equipment
8
Connect AN/PSM-6 dc
Rotate PA METER TEST GRID
Voltage should vary from 0 volt
test leads across PA
DRIVE control from fully
dc to 22 volts dc (para 4-23,
METER TEST GRID
counterclockwise to fully clock-
item No. 5).
DRIVE test point and
wise.
ground.
9
Connect AN/PSM-6 dc.
+27 + 1 volts dc
test leads across INPUT
CURRENT LO test
point and ground.
10
Press INPUT CURRENT test
0 volt dc.
switch.
11
Disconnect AN/PSM-6
Reset all switches and controls
Test set and tray A4 POWER.
to settings listed in paragraphs
indicators extinguish.
4-23.
Converter and Control Tray A4, Trouble Isolation Chart
Item
No.
Trouble symptom
Probable trouble
Checks and corrective measure
1
POWER indicator will not
a. Improper seating of input
a. Tighten power connector.
Illuminate
power connector.
b.. Defective test set fuse------------------
c. Defective tray A4 fuse-------------------
d. Defective indicator light-----------------
e. Defective POWER switch -------------
e. Higher category repair re
quired.
f. Defective 27-volt dc power
f. Higher category repair re-
supply.
quired.
2
CONTROL TEST indi-
Defective indicator lights in lamp
Replace indicator lamps 1
cators Al through AS,
assemblies Z1 through Z16.
through 15 in lamp assemblies
B1 through B5 and Ca
Z1 through Z15 as needed
through C5 will not
light when press to test
function of an indicator
is pressed.
3
When PA METER TEST
a. Improper seating of input
a. Tighten power connector.
ANTENNA LOAD/
power connector.
b. Higher category repair re-
TUNE control is rotated
quired.
b. Defective PA METER TEST
from fully counterclock-
ANTENNA LOAD/TUNE
wise to fully clockwise,
control.
voltage varies more or
less than limits of -4
to +3.6 volts dc.
4
When PA METER TEST
a. Improper seating of , put
a. Tighten power connector.
ALC METER control is
power connector.
rotated from fully coun-
b. Defective PA METER TEST
b. Higher category repair re-
terclockwise to fully
ALC METER control.
quired
clockwise, voltage varies
more or less than lim-
its of 0 to +1.7 volts
dc.
6
When PA METER TEST
a. Improper seating of input
a. Tighten power connector.
GRID DRIVE control is
power connector.
rotated from fully coun-
b. Defective PA METER TEST
b. Higher category repair re-
terclockwise to fully
GRID METER control
quired.
clockwise, voltage varies
more or less than limits
of 0 to 22 volts dc
4-16
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals