9215. CIRCUIT PROTECTION SYSTEM (DC ESSENTIAL BUS 1 CPG STATION)
MAINTENANCE OPERATIONAL CHECK (cont)
Refer to pilot station (fig. 9174) and CPG station (fig. 9175) for cockpit
configuration and equipment.
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:
a. Detach P763.
b. On pilot ELEC PWR panel (fig. 9176), set
BATT/EXT PWR switch to EXT PWR.
BATT / EXT PWR
Pilot ELEC PWR Panel
c. Check for 28 VDC at P763-D.
If 28 VDC is not present, go to paragraph 9217.
d. On pilot ELEC PWR panel, set BATT/EXT
PWR switch to OFF and attach P763.
e. On pilot ELEC PWR panel, set BATT/EXT
PWR switch to EXT PWR.
f. On CPG circuit breaker panel 2 (fig. 9177),
check that TADS DC circuit breaker (CB2)
and CBR BLWR circuit breaker (CB5) are
If TADS DC circuit breaker (CB2) does not stay
closed, go to paragraph 9218.
If CBR BLWR circuit breaker (CB5) does not stay
closed, go to paragraph 9219.