CAUTION:_______DO NOT PUSH THE APU EXTINGUISHER DISCHARGE BUTTON. IF YOU PUSH THIS BUTTON, THE APU EXTINGUISHER WILL RELEASE ITS CONTENTS.
(b)
Pull the fire switch on the fire shutdown module in the right wheel well of the body landing gear.
NOTE: The APU ADVISORY and the APU STATUS messages will show.
____
1) If the APU starts, repair the system: a) Replace the APU fire relay R7731 and the APU fire relay R7732 on the P6 panel (WDM 49-11-31). b) Do the Fire Switch Shutdown Test (The Remote Panel Location). c) If the APU starts, replace the external shutdown relay R7204.
(c)
Push the fire switch on the fire shutdown module back to its usual position.
(d)
Turn the APU control switch on the P5 panel to the OFF position.
NOTE: The APU advisory message will not show after you let the
____ APU control switch return to the OFF position.
S 975-052
(6) Erase the APU status message (AMM 31-61-00/201).
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S 865-044
(7)
Set the switches:
(a)
Set the STANDBY POWER switch on the P5 panel to the OFF position.
(b)
Set the BATTERY switch on the P5 panel to the OFF position.
S 095-017
WARNING: MAKE SURE TO REMOVE THE LOCKS FOR THE LANDING GEAR DOORS
_______ CORRECTLY. A FAST MOVEMENT OF THE DOORS CAN CAUSE INJURY TO PERSONS OR CAUSE DAMAGE TO THE EQUIPMENT.
(8)
Do this task: Body Gear Door Locks Removal (AMM 32-00-30/201).
S 865-037
(9)
Remove the electrical power if it is not necessary for other operations (AMM 24-22-00/201).
TASK 49-11-00-705-018
4. Fire Switch Shutdown Test (The Flight Compartment) (Fig. 502)
__________________________________________________
A. References
(1)
AMM 24-22-00/201, Electrical Power
(2)
AMM 31-61-00/501, Integrated Display System (IDS)
(3)
AMM 32-09-02/201, Air/Ground Relays
(4)
AMM 45-10-00/501, Central Maintenance Computer (CMC)
B.
Access
(1)
Location Zone
221 and 222 Control Cabin
C.
Preconditions
S 865-058
(1)
These conditions are necessary for this task:
(a)
Electrical Power On (AMM 24-22-00/201).
(b)
Integrated Display System (IDS), serviceable (AMM 31-61-00/501).
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MAINTENANCE MANUAL
APU CONTROL SWITCH
APU Fire Shutdown Switch (Flight Deck)
Figure 502
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(c)
Central Maintenance Computer (CMC), serviceable (AMM 45-10-00/501).
(d)
Airplane must be in the ground mode (AMM 32-09-02/201).
D.
Procedure
S 865-045
(1)
Supply external ground power to the airplane (AMM 24-22-00/201).
S 865-046
(2) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 机载辅助动力 1(44)
