1) AC VOLTS = 110-120
2) CPS FREQ = 395-405
(f) Make sure the DC meter shows this value:
1) DC VOLTS = 22-30
(g) Set the STANDBY POWER switch to the OFF position.
(h) Make sure the STANDBY POWER OFF light comes on.
(i) Make sure the AC meter shows these values:
1) AC VOLTS = 0
2) CPS FREQ = BLANK
NOTE: When the AC voltage goes below approximately 12 VAC, the CPS FREQ
will become blank.
(j) Make sure the DC meter shows this value:
1) DC VOLTS = 0
(k) Put the GND PWR and BAT switch to OFF position.
1) Make sure that the electrical power is removed from the airplane.
a) Make sure that the STANDBY PWR OFF light is off.
(l) Set the STANDBY POWER switch to the BAT position.
(m) Make sure the STANDBY POWER OFF light goes off.
(n) Make sure the AC meter shows these values:
1) AC VOLTS = 110-120
2) CPS FREQ = 395-405
(o) Make sure the DC meter shows these values:
1) DC VOLTS = 22-30
(p) Set the STANDBY POWER switch to the AUTO position.
H. Put the Airplane Back to Its Usual Condition
SUBTASK 24-34-11-860-004
(1) Do this task: Remove External Power, TASK 24-22-00-860-814.
SUBTASK 24-34-11-410-002
(2) Close this access panel:
Number Name/Location
117A Electronic Equipment Access Door
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-34-11
Page 406
D633A101-ILF Oct 15/2018
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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