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Table 2-4. Troub leshooting - continued | Up
TM-5-6115-612-34 Gas Turbine Engine Driven Aviation Generator Set Manual | Next
Table 2-4. Troub leshooting - continued |
ARMY
TM 5-6115-612-34
MARINE CORPS TM 6115-34/8
AIR FORCE
TO 35C2-3-471-2
NAVY
AG-320BO-MME-OOO
2-3. GENERAL. (cont)
Table 2-4.
Troubleshooting - continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
If voltage is less than 17 Vdc, check wiring from J2-E to
P1-38 and from J2-F to P1-39.
Repair or replace as
necessary.
Step 4.
Use voltmeter to check voltage at circuit card connector
P1-34(+) and P1-18(-).
If voltage is 5(±1) Vdc,
replace circuit card (paragraph
4-2j).
If voltage is less than 1 Vdc, check wiring from J2-B to
P1-34 and from J2-M to P1-18.
Repair or replace as
necessary.
Step 5.
Set power supply 2 output voltage to less than 10 Vdc.
Use
voltmeter to check voltage at P1-48 and P1-18.
If voltage is same as output voltage of power supply 1 (28
Vdc), go to Step 6.
If voltage is not correct, check wiring from J2-G to P1-48
and from J2-M to P1-18.
Repair or replace as necessary.
Step 6.
Use voltmeter to check voltage
P1-18(-).
If voltage is less than 1
P1-34 and from J2-M to
necessary.
If voltage checks correct,
4-2j).
from circuit card connector to
Vdc, check wiring from J2-B to
P1-18.
Repair or replace as
replace circuit card (paragraph
12.
OVERVOLTAGE MALFUNCTION LIGHT COMES ON - OUTPUT VOLTAGE NORMAL.
Step 1.
Connect GECM to test fixtures in accordance with paragraph 4-2a
except place GEN SOURCE switch in GEN SOURCE position.
2-48
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