TM-9-2320-365-20-1 LMTV Unit Maintenance Manual M1078 Series - Volume 1 Download
Page 531 of 1760
VOLTAGE TEST (1) Remove six screws from auxiliary panel. (2) Lift auxiliary panel from auxiliary panel housing to gain access. (3) Disconnect connector clamp from tachometer connector. (4) Disconnect connector P901 from tachometer connector. (5) Set multimeter to VDC. (6) Connect positive (+) probe of multimeter to connector P901 pin 3. (7) Connect negative (-) probe of multimeter to ground. (8) Position master power switch to on (TM 9- 2320-365-10) and note reading on multimeter. (9) If 24 VDC is not present, repair wire 1546 from connector P913 pin 9 to connector P901 pin 3 (para 2-40) or replace auxiliary panel cable assembly (para 7-49). (10) Position master power switch to off (TM 9- 2320-365-10). CAUTION Use care when testing electrical connectors. Do not damage connector pins or sockets with multimeter probes. Failure to comply may result in damage to equipment. Inspect connector pins/sockets for damage, corrosion, and serviceability. Check that connector pins are not pushed back and are capable of making good contact. NOTE WARNING Remove rings, bracelets, watches, necklaces, and any other jewelry before working around vehicle. Jewelry can catch on equipment and cause injury or short across electrical circuits and cause severe burns or electrical shock. Change 1 2-353 TM 9-2320-365-20-1