MARINE CORPS TM 6115-34/8
2-3. GENERAL. (cont)
Troubleshooting - continued
TEST OR INSPECTION
If voltage is less than 1 Vdc, check wiring from J2-A to
P1-35 and from J2-M to P1-18. Repair or replace as
GENERATOR OVERTEMP MALFUNCTION LIGHT COMES ON.
Connect GECM to test fixture in accordance with paragraph
If OVER TEMP light comes on, go to Step 6.
If OVER TEMP light does not come on, go to Step 2.
Move OVER TEMP switch to ON position.
If OVER TEMP light comes on, go to Step 3.
If OVER TEMP light does not come on, go to Malfunction 17.
Use voltmeter to check voltage on circuit card connector
P1-1(+) and P1-20(-).
If voltage is less than 1 Vdc, go to Step 4.
If voltage is greater than 1 Vdc, check wiring from P1-1 to
thermal switch S1-2 and from S1-1 to J1-F.
replace as necessary.
If wires check good use ohmmeter and check for open between
S1-1 and S1-2.
If open, replace thermal
Use voltmeter to check voltage at P1-48 and P1-8.
If voltage same as power supply 1 (28 Vdc), go to Step 5.
If voltage is less than 28 Vdc, check wiring from J2-G to
P1-48 and from J2-M to P1-18.
Repair or replace as neces-
If wiring is good,
replace circuit card (paragraph