Boeing 737-600 - Section 24-21 - AC GENERATION SYSTEM; Subject 24-21-00 - AC GENERATION SYSTEM; Pageblock 24-21-00;201 - AC GENERATION SYSTEM - MAINTENANCE PRACTICES; Task 24-21-00-040-801 - AC Generation and Load System - Deactivation

AC GENERATION SYSTEM - MAINTENANCE PRACTICES
1. General
A. This procedure has two tasks:
NOTE: Deactivation and Activation procedures are for the Generator Control Unit (GCU) and
Electric Control Panels, P91 and P92.
(1) AC Generation and Load System Deactivation
(2) AC Generation and Load System Activation
TASK 24-21-00-040-801
2. AC Generation and Load System - Deactivation
(Figure 201)
A. General
(1) This task has these procedures:
(a) Remove external power from the ground service buses.
(b) Remove external power from the 115V AC transfer buses.
B. Tools/Equipment
Reference Description
STD-858
Tag - DO NOT OPERATE
C. Location Zones
Zone Area
116 Nose Landing Gear Wheel Well - Right
211 Flight Compartment - Left
212 Flight Compartment - Right
D. Access Panels
Number Name/Location
117A Electronic Equipment Access Door
E. Procedure
SUBTASK 24-21-00-010-001
(1) Do these steps to remove external power from the ground service buses:
(a) Push the GROUND SERVICE switch on the FWD ATTENDANT panel, P13.
1) Make sure the light in the GROUND SERVICE switch goes off.
(b) Remove power from the external power cable.
(c) Make sure these lights on the P19 panel go off:
1) EXTERNAL PWR CONN
2) EXTERNAL PWR NOT IN USE
WARNING
REMOVE ELECTRICAL POWER FROM THE EXTERNAL POWER
SOURCE. IF YOU DO NOT REMOVE ELECTRICAL POWER, YOU CAN
CAUSE INJURIES TO PERSONNEL AND DAMAGE TO EQUIPMENT.
(d) Remove the external power cable.
(e) Close the External Power Receptacle Door.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-21-00
Page 201
D633A101-ILF Oct 15/2017
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
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