ARMY TM 9-4120-380-14
NAVY EE-000-BA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-21
Table 4-2. Unit Maintenance Troubleshooting - Continued
Malfunction
Test or Inspection
Corrective Action
Disconnect input power before performing internal electrical troubleshooting. Voltages
used can KILL.
Step 1. Using wiring diagram (figure FO-2 ), check electrical connections and individual wires for tightness.
Tighten as required if wires are damaged, contact Direct Support Maintenance.
Step 2. Check operation of fan motor contactor (K2).
Step 3. Check operation of fan motor (B2).
Step 4. Check operation of MODE SELECT switch (S1).
Disconnect input power before performing internal electrical troubleshooting.
Voltages used can KILL.
Step 1. Using wiring diagram (figure FO-2.), check electrical connections and individual wires for tightness.
Tighten as required. If wires are damaged, notify Direct Support Maintenance.
4-24