737 Flight Crew Operations Manual
Supplementary Procedures -
Electrical
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
SP.6.4 D6-27370-866-EGP
BATTERY switch ..............................................................................OFF
Standby Power Test
Battery switch .................................................................................... ON
AC and DC meter selectors .................................................. STBY PWR
If APU generator is on–line:
BUS TRANSFER switch ........................................................OFF
APU GEN No. 2 switch or GRD PWR switch .................................OFF
Turn OFF appropriate switch depending on power source in use.
Removes power from TR 3.
STANDBY POWER switch ..............................................................OFF
Check STANDBY PWR OFF light illuminated.
AC–DC voltmeters ............................................................................Zero
STANDBY POWER switch ..............................................................BAT
Check STANDBY PWR OFF Light extinguished
AC–DC voltmeters .........................................................................Check
AC voltmeter 115 +/-5 volts
DC voltmeter 24 +/-2 volts
Frequency meter .............................................................................Check
Check frequency meter for normal indication: 400 +/- 10 CPS.
STANDBY POWER switch .......................................................... AUTO
BUS TRANS switch ..................................................................... AUTO
APU GEN No. 2 switch or GRD PWR switch .................................. ON
Note: It may take up to 3 minutes for CDS displays to recover when
power is interrupted for more than 2 seconds on the ground.
September 15, 2016
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