(2)
Indirect Ceiling Light - Ballast Installation
B. The ballasts are installed on the upper deck on the top side of the ceiling panels.
TASK 33-28-02-004-001
2. Indirect Ceiling Light - Ballast Removal________________________________________
A. References
(1)
25-22-03/401, Upper Deck Ceiling Panels
(2)
SSM 33-28-09
(3)
WDM 33-28-11 thru 33-28-99
B. Access
(1) Location Zone
200 Upper Half of Fuselage
C. Ballast Removal
S 864-034
(1) Remove electrical power from the indirect ceiling light:
(a) Open each applicable circuit breaker and attach the DO-NOT-CLOSE tag: 1) On the power distribution center panel, P414.
S 014-037
(2) Lower the ceiling panel (AMM 25-22-03/401).
(a)
Disconnect the electrical connector.
(b)
Remove each screw that holds the ballast.
TASK 33-28-02-404-007
3. Indirect Ceiling Light - Ballast Installation_____________________________________________
A. References
(1) AMM 24-22-00/201, Manual Control
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A
747-400
MAINTENANCE MANUAL
INDIRECT CEILING LIGHT BALLAST
(EXAMPLE)
Upper Deck Passenger Compartment Lights - Component Location
Figure 401
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E71100
A
747-400
MAINTENANCE MANUAL
(2)
AMM 25-22-03/401, Upper Deck Ceiling Panels
(3)
SSM 33-28-09
(4)
WDM 33-28-11 thru 33-28-99
B. Access
(1) Location Zone
200 Upper Half of Fuselage
C. Ballast Installation
S 424-028
(1) Install the ballast:
(a)
Install the ballast with its screws.
(b)
Connect the electrical connector.
(c)
Install the ceiling panel (AMM 25-22-03/401).
D. Ballast Test
S 864-038
(1)
Supply electrical power (AMM 24-22-00/201).
S 864-040
(2)
Remove each DO-NOT-CLOSE tag.
(a) Close each circuit breaker that was opened.
S 714-041
(3) At the attendant's panel, set the switch for the indirect ceiling light to the dim position.
(a) Make sure the light comes on correctly.
S 714-042
(4)
Set the switch to the bright position.
(a) Make sure the light becomes bright.
(5)
Set the switch to the usual position.
S 864-018
(6)
Remove the electrical power if it is not necessary
(AMM 24-22-00/201).
S 864-043
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A
747-400 MAINTENANCE MANUAL
UPPER DECK SIDEWALL LIGHTS - MAINTENANCE PRACTICES
__________________________________________________
1. General_______
A. This procedure has this task:
(1) Sidewall Light - Lamp Replacement
TASK 33-28-03-962-001
2. Sidewall Light - Lamp Replacement__________________________________
A. References
(1)
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 灯 LIGHTS(57)
