TM 1-1520-238-T-6
9–478
9–215. CIRCUIT PROTECTION SYSTEM (DC ESSENTIAL BUS 1 – CPG STATION) –
9–215
MAINTENANCE OPERATIONAL CHECK (cont)
M69-230
TADS DC
CBR BLWR
Figure 9–177.
CPG Circuit Breaker Panel 2
Task
Result
g. On pilot ELEC PWR panel (fig. 9–176), set
BATT/EXT PWR switch to OFF and detach
P761 and P997.
h. With BATT/EXT PWR switch to EXT PWR,
check for 28 VDC at (A97):
J1-C,
J1-G,
J1-L,
J1-M.
If 28 VDC is not present, go to paragraph 9–218.
i. Check for 28 VDC at
P997-A and P997-B.
If 28 VDC is not present, go to paragraph 9–219.
j. Attach P761 and P997.
2. On pilot ELEC PWR panel, set BATT/EXT PWR switch to OFF.
3. Perform EXTERNAL POWER – POWER DOWN (para 9–46).
END OF TASK
