TM5-6625-2694-13&P
Table 5-1.
Direct Support Troubleshooting (cont'd.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2.
Load Selector Switch(s) defective.
Disconnect power from Test Set.
a.
Remove and tag leads from switch terminals.
b.
Attach ohmmeter leads across switch terminals top to
bottom.
c. With Switch in on (up) position, ohmmeter should
read 0 Ohms. With Switch in off (down) position,
ohmmeter should read infinite.
Refer to
defective
d.
5-21 and
replace
Switch(s).
Step 3.
Check Load Resistors.
Disconnect and tag lead from one end of Resistor.
a.
b.
Attach ohmmeter leads to Resistor terminals.
c. Ohmmeter should read 15 Ohms
for 1 KW Resistors
and 30 Ohms for 500 W Resistors.
defective
d.
and
Refer
to
replace
Resistors.
5.
VARIABLE LOAD CONTROL HAS NO EFFECT ON LOADING.
Measure AC voltage on TB1-1, TB2-1 and TB3-1 with respect to
Step 1.
AC Voltage should vary in direct
LO while varying the load control.
proportion to load control.
remove
and
replace T4.
Refer to paragraph 5-17
Change
1