The Army AH-64A Helicopter Systems Theory of Operation manual (TM 1-1520-238-T-9) may be used in conjunction with the wiring information in the Army AH-64A Helicopter Wiring Diagrams manual to troubleshoot any fault not isolated by the appropriate maintenance operational check and the associated fault isolation procedures. It provides troubleshooting information and theory of operation information for the Army AH-64A Helicopter only.Fan motor Bl, a 115/200 V ac, three-phase motor, drives the fan to cool the T/R. In the event of an overtemperature condition (usually ... The thermal sensor completes a circuit to turn on the appropriate HOT RECT light on the pilot Caution /Warning/ Advisory panel. ... TO DO BUS TIE CONTACTOR ASSEMBLY GROUND LI I agt; Ar| I H H * I CR6 I CR12 I FILTER 1 1 1 1 NETWORK R1 TBI M52- 088 Figure 9-4.
|Title||:||Aviation Unit and Intermediate Troubleshooting Manual for Army AH-64A Helicopter, Theory of Operation|