(5)  
AMM 49-11-00/201, Auxiliary Power Unit

 B.  Access
 (1)  Location Zone
 121/122 Forward Cargo Compartment
 119/120 Main Equipment Center
 211/212 Flight Compartment

 C.  Remove the Generator Control Units
 S 024-003
 (1)  Do these steps to remove the Generator Control Units.
 WARNING: DO THE DEACTIVATION PROCEDURE FOR THE SPOILERS OR MOVE ALL
_______ PERSONS AND EQUIPMENT AWAY FROM THE SPOILERS. THE SPOILERS CAN RETRACT QUICKLY AND CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (a)  
Do the deactivation procedure for the spoilers (AMM 27-61-00/201) or move all persons and equipment away from the spoilers.

 (b)  
Make sure the engines and APU are not in operation (AMM 49-11-00/201).

 (c)  
Open this circuit breaker and attach the DO-NOT-CLOSE tag:

 1)  On the main power distribution panel P6: a) 6A1, BAT BUS DISTR
 CAUTION: DO NOT TOUCH THE GENERATOR CONTROL UNIT BEFORE YOU DO THE
_______ PROCEDURE FOR DEVICES THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE GENERATOR CONTROL UNIT.
 (d)  Do the procedure for devices that are sensitive to electrostatic discharge (AMM 20-41-01/201).
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 24-22-02
 ALL  ú ú 01 Page 401 ú Sep 28/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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757
MAINTENANCE MANUAL

 WARNING: DO NOT REMOVE OR INSTALL THE GENERATOR CONTROL UNITS WHEN
_______ THE ENGINES OR APU ARE IN OPERATION. HIGH VOLTAGE AT THE CONNECTOR CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (e) Remove the generator control unit (AMM 20-10-01/401).
 TASK 24-22-02-404-004
 3.  Install the Generator Control Units
___________________________________
 A.  References
 (1)  
AMM 20-10-01/401, E/E Rack Mounted Components

 (2)
AMM 20-41-01/201, Electrostatic Discharge Sensitive Devices

 (3)  
AMM 24-22-00/201, Electrical Power - Control

 (4)  
AMM 27-61-00/201, Spoiler/Speedbrake Control System

 (5)  
AMM 49-11-00/201, Auxiliary Power Unit

 B.  Access
 (1)  Location Zone
 119/120 Main Equipment Center
 211/212 Flight Compartment

 C.  Install the Generator Control Units
 S 424-005
 (1)  Do these steps to install the generator control units.
 WARNING: DO THE DEACTIVATION PROCEDURE FOR THE SPOILERS OR MOVE ALL
_______ PERSONS AND EQUIPMENT AWAY FROM THE SPOILERS. THE SPOILERS CAN RETRACT QUICKLY AND CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (a)  
Do the deactivation procedure for the spoilers (AMM 27-61-00/201) or move all persons and equipment away from the spoilers.

 (b)  
Make sure this circuit breaker is open:

 1)  On the main power distribution panel P6: a) 6A1, BAT BUS DISTR
 CAUTION: DO NOT TOUCH THE GENERATOR CONTROL UNIT BEFORE YOU DO THE
_______ PROCEDURE FOR DEVICES THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE GENERATOR CONTROL UNIT.
 (c)  Do the procedure for devices that are sensitive to electrostatic discharge (AMM 20-41-01/201).
 WARNING: DO NOT REMOVE OR INSTALL THE GENERATOR CONTROL UNITS WHEN
_______ THE ENGINES OR APU ARE IN OPERATION. HIGH VOLTAGE AT THE CONNECTOR CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (d)  Install the generator control units (AMM 20-10-01/401).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 24-22-02
 ALL  ú ú 01 Page 402 ú Sep 28/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 (e) Remove the DO-NOT-CLOSE tags and close this circuit breaker:
 1)  On the main power distribution panel P6: a) 6A1, BAT BUS DISTR
 S 714-007
 (2)  Do the steps that follow to do a test of the left generator control unit:
　
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