737 AMM 飞机维护手册灯 LIGHTS(75)_航空信息_民用航空_通用航空

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B. The following procedures provide steps for replacing a battery pack.
2. Prepare to Remove Battery Pack
A. Verify EMER EXIT LIGHTS switch on P5 overhead panel is positioned to OFF.
B. Verify EMER EXIT switch on P14 aft attendants' panel is guarded in NORM.
C. Gain access to power supply (Fig. 201).
(1)
For power supplies installed on entry lights, lower ceiling panel below entry light to expose power supplies. Open quarter turn fastener on end of power supply opposite connector end and swing power supply down into passenger cabin.

(2)
For power supplies installed on air conditioning ducts, lower sculptured ceiling panel under power supply.

3. Replace Battery Pack
A. Turn quarter turn fasteners counterclockwise to a solid stop (Fig. 201).
B. Slide battery pack straight back away from electronics assembly until sockets have cleared mating pins (approximately .04 inches).
CAUTION DO NOT RAISE BACK END OF BATTERY PACK UNTIL SOCKETS HAVE CLEARED ELECTRONIC ASSEMBLY MATING PINS. FAILURE TO DO SO MAY CAUSE DAMAGE TO MATING PINS AND/OR BATTERY PACK.
C. Remove battery pack.
D. Verify that new battery pack installation date on instruction tag has not expired. DO NOT REMOVE INSTRUCTION TAG FROM BATTERY PACK.
E. Place new battery pack on power supply chassis and slide toward electronics assembly until sockets mate with pins.
F. Push to electronics assembly until battery pack is firmly seated.
G. Turn quarter turn fasteners clockwise to the detent position.
NOTE: An audible click will indicate when detent position is reached.
H. Test emergency lights (Ref 33-51-02, A/T).
I. Close items opened in step 2.C.
Oct 20/84 33-51-151 Page 201
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

Emergency Lights Power Supply 5C9
33-51-151 Figure 201 Oct 20/83
Page 202
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

　
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