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May 30/02 Page EA - 13
Operational Procedures With Converter / Alternator Inoperative -
ELWS Installed, ctd… OM 09-03-60
16. Display Units............................................................................. OFF
17. ELECTRIC MASTER AUX PWR.............................................. OFF
18. APU ...............................................................OVERSPEED / TEST
19. Standby Attitude Indicator ...................................................CAGED
20. APU MASTER Switch..............OFF (APU RPM LESS THAN 10%)
21. BATT 1 / BATT 2 Switches....................................................... OFF
22. Gust Lock ...................................................................................ON
NOTE: Ensure hydraulic pressure is depleted prior to engaging gust
lock.
23. Chocks ............................................................................ IN PLACE
24. Parking Brake........................................................................... OFF
END
Bus Fault - AC or DC RESET Light On AFM 3-07-70
When RESET switchlight is pushed, one of three events will occur:
• RESET light will extinguish and remain out.
• RESET light will extinguish, the relevant BPCU will cycle the bus
through its possible power sources, then the RESET light will reilluminate.
• RESET light will not extinguish but, instead, remains illuminated.
Specific procedures for Essential DC Bus Fault, Essential AC Bus
Fault, Main AC Bus fault and Main DC Bus Fault follow in blue.
NOTE: The MASTER and RESET Switches should not be cycled more
than once every ten (10) seconds.
Continued on next page →
Quick Reference Handbook
ABNORMAL / EMERGENCY PROCEDURES REVISION 7
Page EA - 14 May 30/02
Bus Fault - AC or DC RESET Light On, ctd… AFM 3-07-70
Essential DC Bus Fault Indicated:
1. DC RESET Switchlight...........................................................PUSH
If RESET light extinguishes and remains out:
A. Essential DC Bus AUTO Switchlight ........................CHECK ON
B. Verify electrical power is on L MAIN DC bus (source light
illuminated) and Essential DC L MAIN switchlight is ON.
C. Voltage ............................MONITOR REMAINDER OF FLIGHT
2. If RESET light extinguishes momentarily while the bus cycles
through possible power sources, then re-illuminates:
A. Essential DC Bus BATT Switch ........................................PUSH
B. ESSENTIAL DC BUS FEEDER Circuit Breakers (On PDB).......
.............................................................PULL (ONE AT A TIME)
C. DC RESET Switchlight ................................................................
.......PUSH (ONCE, FOR EACH CIRCUIT BREAKER PULLED)
CAUTION: PULL ONLY ONE (1) CIRCUIT BREAKER AT A TIME
AND, IF PROBLEM CONTINUES, RESET CB BEFORE PULLING
THE NEXT CIRCUIT BREAKER.
D. After fault isolation, leave applicable feeder breaker pulled
(OPEN).
E. Essential DC Bus AUTO Switchlight ........................CHECK ON
3. If RESET light remains illuminated:
A. Essential DC Bus Battery Switchlight................................PUSH
B. Battery Amperage .......................................................... CHECK
If the Main DC buses are powered, turn off both Main Boost
Pumps. If the Main DC busses are not powered, open
Crossflow and turn off Right Main Boost Pump.
If battery amperage exceeds negative three (-3) amps
discharge, consideration should be given to descending below
15,000 ft. and turning off all boost pumps to conserve battery
life.
Continued on next page →
DC
RESET
SEL
AUTO LEFT
MAIN
RIGHT
MAIN
ON
BATT
ESS DC BUS
ON
BATT 1
ON
BATT 2
Quick Reference Handbook
REVISION 7 ABNORMAL / EMERGENCY PROCEDURES
May 30/02 Page EA - 15
Bus Fault - AC or DC RESET Light On, ctd… AFM 3-07-70
Essential AC Bus Fault Indicated:
1. AC RESET Switchlight ...........................................................PUSH
If RESET light extinguishes and remains out:
A. Essential AC Bus AUTO Switchlight.........................CHECK ON
B. Verify electrical power is on L MAIN AC BUS (source light
illuminated) and that Essential AC L MAIN switchlight is ON.
C. Monitor voltage and frequency for remainder of flight.
2. If RESET light extinguishes momentarily while the bus cycles
through possible power sources, then re-illuminates:
A. Essential AC Bus AUTO Switchlight.........................CHECK ON
B. Check Essential AC bus voltage and frequency:
1) If indications are normal:
a. PILOT/COPILOT PHASE B and C CBs
　
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