(b)
Supply power to 115-volt ac generator bus 1 and 115-volt ac generator bus 2: 1) Move the GRD PWR switch on the P5 panel to the ON position. 2) Make sure that the NOT IN USE light on the P19 go off. 3) Make sure that the TRANSFER BUS OFF and BUS OFF lights on
the P5 panel go off.
TASK 24-22-00-862-011
3. Remove External Power from the Buses (Fig. 201)
____________________________________
A. Standard Tools and Equipment
(1)
External power supply 115/200 volt ac, 3-phase, 400 Hz
B.
Access
(1)
Location Zone
202 Lower Nose Compartment
(2)
Access Panel
1101 External Power Receptacle Door
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A
737-300/400/500MAINTENANCE MANUAL
C. Procedure
S 862-012
(1) Move the GRD PWR switch on the P5 panel to the OFF position.
(a) Make sure that the TRANSFER BUS OFF and BUS OFF lights on the P5 panel come on.
S 862-013
(2) Move the BAT switch on the P5 panel to the OFF position.
(a)
Make sure that the TRANSFER BUS OFF and BUS OFF lights on the P5 panel go off.
(b)
Make sure that the NOT IN USE light on the P19 panel comes on.
S 862-014
(3) Turn the dc meter switch on the P5-13 panel to the TR1 position.
NOTE: The electrical power of the battery will decrease, if the dc
____ meter switch stays in the BAT position for too much time.
S 092-065
WARNING: REMOVE ELECTRICAL POWER FROM THE POWER CABLE BEFORE YOU REMOVE
_______ THE POWER CABLE FROM THE EXTERNAL POWER RECEPTACLE. ELECTRICAL ARCS CAN CAUSE INJURIES.
(4)
Remove power from the external power cable.
S 092-017
(5)
Remove the power cable from the external power receptacle.
(a)
Make sure that the EXTERNAL POWER CONN and NOT IN USE lights on the P19 panel go off.
(b)
Make sure that the GRD POWER AVAILABLE light on the P5 panel go off.
S 412-018
(6) Close the door for the external power receptacle.
TASK 24-22-00-862-019
4. Supply External Power to the Ground Service Buses Only (Fig. 201)
______________________________________________________
A. General
(1)
Ground service buses energize ground service circuits (such as ceiling lights and service outlets). This procedure energizes only the ground service buses.
(2)
The airplane has an external power receptacle near the nose wheel well. You will connect external ac power to the receptacle to connect electrical power to the ground service buses.
B. Standard Tools and Equipment
(1) External power supply 115/200 volt ac, 3-phase, 400 Hz
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737-300/400/500MAINTENANCE MANUAL
C. Access
(1)
Location Zone
202 Lower Nose Compartment
(2)
Access Panel
1101 External Power Receptacle Door
D.
Procedure
S 012-066
WARNING: MAKE SURE THAT THE ELECTRICAL SYSTEM IS CLEAR OF OTHER PERSONS
_______ BEFORE YOU SUPPLY POWER TO THE AIRPLANE. HIGH VOLTAGES CAN CAUSE INJURIES.
(1) Open the door for the external power receptacle.
S 492-067
WARNING: REMOVE ELECTRICAL POWER FROM THE POWER CABLE BEFORE YOU PUT THE
_______ POWER CABLE INTO THE EXTERNAL POWER RECEPTACLE. ELECTRICAL ARCS CAN CAUSE INJURIES.
(2) Install the power cable.
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