(2)  
To get accurate results from this test, the ac generation system (Ref 24-21-00) and the dc generation system (Ref 24-31-00) must operate correctly.

 B.  
References

 (1)  
24-22-00/201, Manual Control

 (2)  
24-31-21/501, Battery Charger

 (3)  
AMM 49-11-00/201, APU Maintenance Practices

 (4)  
SSM 24-50-07

 (5)  
WDM 24-34-01

 C.  
Access

 (1)  
Location Zone 101 Left Control Cabin - P5 Forward Overhead Panel 102 Right Control Cabin - P6 Load Control Center Panel 202 Lower Nose Compartment - E11 Landing Gear Logic Shelf

 (2)  
Access Panel
 1103L Forward Access Door

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 D.  Procedure
 S 865-003
 (1)  Make sure that the circuit breakers for the dc and standby power systems are closed:
 (a)  
The circuit breakers on the J9 panel

 (b)  
The circuit breakers on the P6-4 panel

 (c)  
The circuit breakers on the P6-5 panel

 (d)  
The circuit breakers on the P6-6 panel.

 S 865-004
 (2)  
Supply external or APU generator power (Ref 24-22-00/201).

 S 715-005

 (3)  
Do the Operational Test:

 (a)  
Turn the dc meters switch on the P5-13 panel to TR3. 1) Make sure that the dc voltmeter shows 26 | 4 volts.

 (b)  
Push the POSITION switch on the P5 overhead panel to the ON BATT or STEADY position.

 NOTE: The POSITION switch is located on the lower right of the
____
 P5 panel.

 1)  Make sure that the dc ammeter indication increases approximately 5 amperes.
 (c)  
Push the POSITION switch to the OFF position.

 1)  Make sure that the dc ammeter indication decreases approximately 5 amperes (returns to its original value).

 (d)  
Turn the dc meters switch to BAT BUS.

 1)  Make sure that the dc voltmeter shows approximately the same voltage as for the TR3 position ( | 0.5 volt).

 (e)  
Push the STANDBY POWER switch to OFF. 1) Make sure that the STANDBY POWER OFF light comes on. 2) Turn the ac meters switch on the P5-13 panel to STBY PWR.

 a) Make sure that the ac voltmeter shows no voltage. 3) Turn the dc meters switch to STBY PWR. a) Make sure that the dc voltmeter shows 0-5 volts.

 (f)  
Push the STANDBY POWER switch to AUTO.

 1)  Make sure these indications occur: a) The STANDBY PWR OFF light goes off b) The dc voltmeter shows 26 | 4 volts c) The ac voltmeter shows 115 | 5 volts d) The frequency meter shows 400 | 5 Hz

 (g)  
Push the GRD PWR switch or the APU GEN No. 1 and No. 2 switches to OFF. 1) Make sure that the STANDBY PWR OFF light comes on. 2) Turn the dc meters switch to these positions and look for

 the correct voltages on the dc voltmeter: a) TR3 - 0 volts b) BAT - 24 |4 volts
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 c) BAT BUS - approximately the same as for the BAT position (| 0.5 volts) d) STBY PWR - 0 volts 3) Turn the ac meters switch to INV. a) Make sure that the ac voltmeter shows no voltage.
 (h)  Open the forward access door near the nose landing gear.
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE
_______ LEADING EDGE SLATS BEFORE YOU PUT THE AIRPLANE IN THE AIR MODE. THE LEADING EDGE SLATS CAN EXTEND AUTOMATICALLY WHEN YOU PUT THE AIRPLANE IN THE AIR MODE. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (i)  
Push and hold the GROUND SENSING test switch on the front panel of the E11 landing gear logic shelf. 1) Make sure these indications occur:
　
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