S 862-084

 (3)  
Make sure that the AVAIL lights on the APU GEN 1 and APU GEN 2 switches are on.

 S 862-085

 (4)  
Stop the APU (AMM 49-11-00/201).

 S 862-086

 (5)  
Set the STANDBY POWER switch to OFF.

 S 862-113
 CAUTION: THE BATTERY SWITCH MUST BE OFF WHEN ELECTRICAL POWER IS REMOVED
_______ FROM THE AIRPLANE. IF THE BATTERY SWITCH IS ON WITH NO AC POWER ON THE AIRPLANE, THE BATTERIES CAN BECOME DISCHARGED. THE APU WILL NOT START IF THE APU BATTERY IS DISCHARGED.
 (6)  Set the BATTERY switch to OFF.
 TASK 24-22-00-862-088
 12. Apply Engine-Driven Generator Power (Fig. 201)___________________________________
 A. References
 (1)  71-00-00/201, Power Plant
 B. Access
 (1)  Location Zone
 221 Control Cabin, LH

 C. Procedure
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A
747-400 MAINTENANCE MANUAL
 S 862-089
 WARNING:_______ MAKE SURE THAT THE ELECTRICAL SYSTEM IS CLEAR OF OTHER PERSONS
 BEFORE YOU SUPPLY POWER TO THE AIRPLANE.  HIGH VOLTAGES CAN
 CAUSE INJURIES.
 WARNING:_______ MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
 FLAPS BEFORE YOU TURN THE POWER ON.  THE FLAPS CAN
 AUTOMATICALLY MOVE WHEN YOU SUPPLY ELECTRICAL POWER.
 WARNING:_______ MAKE SURE ALL AIRPLANE SYSTEMS THAT USE ELECTRICAL POWER ARE IN
 A SAFE CONDITION.  AIRPLANE SYSTEMS CAN OPERATE AND CAUSE
 INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 CAUTION:_______ THE BATTERY SWITCH MUST BE OFF WHEN ELECTRICAL POWER IS TURNED
 OFF.  IF THE BATTERY SWITCH IS ON WITH NO AC POWER ON THE
 AIRPLANE, THE BATTERIES CAN BECOME DISCHARGED.  THE APU WILL

 NOT START IF THE APU BATTERY IS DISCHARGED.
 (1) Set the BATTERY switch, on the P5 overhead panel, to ON.
 NOTE: Most of the switches and lights you must use are on the
____ P5 overhead panel. Other panels you must use will be identified in the procedure.
 S 862-090
 (2)
Set the STANDBY POWER switch to AUTO.

 S 212-091

 (3)
Set the BUS TIE 1, 2, 3, and 4 switches to AUTO.

 S 212-092

 (4)
Set the GEN CONT 1, 2, 3, and 4 switches to ON.

 (a)
Make sure that the OFF lights are on.

 S 212-093
 (5)  
Make sure that the DRIVE lights on DRIVE DISC 1, 2, 3, and 4 switches are on.

 S 862-094

 (6)
Start the applicable engine(s) (AMM 71-00-00/201).

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A
747-400 MAINTENANCE MANUAL
 S 212-095
 CAUTION: THE DRIVE LIGHT IN THE DRIVE DISC SWITCH MUST GO OFF AFTER THE
_______ ENGINE STARTS. IF THE DRIVE LIGHT STAYS ON, OR COMES ON AFTER THE ENGINE STARTS, PUSH THE DRIVE DISC SWITCH. THE DRIVE DISC SWITCH REMOVES INPUT POWER FROM THE IDG. HIGH OIL TEMPERATURE OR LOW OIL PRESSURE CAN CAUSE DAMAGE TO THE IDG.
 (7)  
Make sure that the DRIVE light on the applicable DRIVE DISC switch goes off when the engine gets to idle speed.

 S 212-096

 (8)  
Make sure that the OFF lights on the applicable GEN CONT switch goes off when the engine gets to idle speed.

 S 212-097

 (9)  
Make sure that the ILSN lights on the BUS TIE 1, 2, 3, and 4 switches are off.

 S 212-153

 (10)
 Set the L and R UTILITY switches to ON.

 S 212-122

 (11)
 Make sure that the OFF lights on the L and R UTILITY switches are off.

 TASK 24-22-00-862-099
 13. Remove Engine-Driven Generator Power (Fig. 201)
____________________________________
 A. References
 (1)  71-00-00/201, Power Plant
 B. Access
　
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