Repair or replace as necessary

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 P1-29 to J3-B J3-A to K1-A2 P1-18 to J3-D J3-C to TB1-1 Repair or replace as necessary. Step 2. Set power supply 1 at 28(±2) Vdc, power supply 2 at 0 volts, power supply 3 at 5(± 0.5) Vdc, and power supply 4 at 0 volts. Use oscilloscope and check for a pulse of at least 3 volts at P1-32, P1-33, P1-49, and P1-50. If no pulse is measured, replace circuit card (paragraph 4-2j). If correct is pulse measured, check transistors Q1 through Q5 and diodes D1 and D2 for shorts and opens. Replace as necessary (paragraph 4-21). 16. NO GENERATOR ENABLE - ALL INPUTS NORMAL. Step 1. Connect GECM to test fixture in accordance with paragraph 4-2a, except place GEN SOURCE switch in GEN SOURCE position. Move ENABLE switch to ON position. Use voltmeter to check for 5 Vdc between P1-37 and case ground. Step 2. Use If voltage is correct, go to Step 2. If voltage is incorrect, check wiring from J2-L to P1-37. Repair or replace as necessary. voltmeter and check for 24-28 Vdc at P1-13. If voltage is measured, replace circuit card (paragraph 4-2j). If no voltage is measured, check wiring from P1-13 to K1-X1. Repair or replace as necessary. If wiring is good, check diodes D15 and D16 and coil of relay K1 for shorts and opens. Replace as necessary (paragraph 4-2m and 4-2n). 2-52