TM 1-1520-238-T-6
9–608
9–312. CIRCUIT PROTECTION SYSTEM (DC GROUND CIRCUIT BREAKERS – PILOT
9–312
STATION) – MAINTENANCE OPERATIONAL CHECK (cont)
NOTE
If referenced out of one paragraph or volume into another for additional
troubleshooting, upon completion of the task, return to the maintenance
operational check for the original paragraph or volume.
1. Perform the maintenance operational check as follows:
Task
Result
a. On pilot forward circuit breaker panel
(fig. 9–197), check that MISSION RDR JAM
DC circuit breaker (CB72) and IR JAM PWR
circuit breaker (CB63) are closed.
If IR JAM PWR circuit breaker (CB63) or MISSION
RDR JAM DC circuit breaker (CB72) do not stay
closed, refer to TM 11-1520-238-23-2 to troubleshoot
radar and IR jammer systems.
M69-262
MISSION RDR
JAM DC
IR JAM
PWR
Figure 9–197.
Pilot Forward Circuit Breaker Panel
b. On pilot ELEC PWR panel (fig. 9–198), set
BATT/EXT PWR switch to OFF.
M69-261
BATT / EXT PWR
SWITCH
Figure 9–198.
Pilot ELEC PWR Panel
c. Detach P1.
d. Check for short between P1-50 and ground.
If short exists, go to paragraph 9–314.
e. Check for short between P1-1 and ground.
If short exists, go to paragraph 9–315.
f. Check for open between P1-50 and P1-16.
If open exists, go to paragraph 9–314.
