747-400 AMM 飞机维护手册 灯 LIGHTS(27)

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____ releases suddenly. Do not let it hit the slide-mechanism-stops.
 (c)  Turn down the lens cap.
 S 962-058
 (3)  Replace the diode/fuse card.
 (a)  
Remove the diode/fuse card. 1) Hold the top and bottom of the diode/fuse card assembly with your fingers. 2) Pull the diode/fuse card assembly straight out until it is

 clear of the base assembly. 3) Push up on the diode/fuse card assembly to remove it. 4) Remove and keep the cover from the diode/fuse card.

 (b)  
Install the new diode/fuse card. 1) Install the cover on the new diode/fuse card. 2) With the index points aligned, put the diode/fuse card

 assembly into the drawer assembly. 3) Carefully push down the front end of the diode/fuse card assembly until you hear a click.
 S 432-059
 (4)  Carefully push in the lens cap assembly.
 (a)  
Turn up the lens cap.

 (b)  
Push the lens cap assembly straight back until it locks into its position.

 S 862-021
 (5)  Close these circuit breakers and remove the DO-NOT-CLOSE tags:
 (a)  P6 Main Power Distribution Panel
 1) 6F19 FLT DK LIGHTS PILOTS MISC IND 1
 2) 6F20 FLT DK LIGHTS PILOTS MISC IND 2
 3) 6F26 FLT DK LIGHTS F/O IND
 4) 6F27 FLT DK LIGHTS F/O IND & DIG DISP
 5) 6L4 FLT DK LIGHT CAPT IND
 6) 6L5 FLT DK LIGHT CAPT IND & DIG DISP

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747-400 MAINTENANCE MANUAL
 S 712-022
 (6)  Do a test of the indicator light:
 (a)  
Supply electrical power (Ref 24-22-00/201).

 (b)  
Put the IND LTS switch on the P5 panel to the TEST position.

 (c)  
Make sure the indicator light with the new diode/fuse card comes on.

 (d)  
Put the IND LTS switch to the BRT position.

 (e)  
Remove electrical power if it is not necessary (Ref 24-22-00/201).

 TASK 33-12-02-002-035
 4.  Indicator Light Removal (Fig. 201)_______________________
 A. References
 (1)  
24-22-00/201, Manual Control

 (2)  
SSM 33-12-01

 B. Access
 (1)  Location Zone 200 Flight Compartment, Pilots' Instrument Panels
 C. Removal Procedure
 S 862-036
 (1)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  P6 Main Power Distribution Panel 1) 6F19 FLT DK LIGHTS PILOTS MISC IND 1 2) 6F20 FLT DK LIGHTS PILOTS MISC IND 2 3) 6F26 FLT DK LIGHTS F/O IND 4) 6F27 FLT DK LIGHTS F/O IND & DIG DISP 5) 6L4 FLT DK LIGHT CAPT IND 6) 6L5 FLT DK LIGHT CAPT IND & DIG DISP

 (2)  
Get access to the rear of the indicator.

 S 032-038

 (3)  
Disconnect the electrical wires from the contacts on the rear of the indicator light.

 S 012-037
 (a)  Use the correct tool from table 201.
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747-400 MAINTENANCE MANUAL
 ~.................................................................. | CONTACT WIRE | TOOL PART | | BARREL SIZE | NUMBER | .................................................................... | 22 | M83723/31-20 | .................................................................... | 20 | M83723/31-20 | .................................................................... | 16 | M83723/31-16 | .................................................................... | 12 | M83723/31-12 | 2...................................…..............................1
 Insertion/Removal Tools Table 201
 (b)  Identify the wires to aid during the installation of the indicator light.
 S 022-072
 CAUTION:_______USE ONLY YOUR FINGERS TO PULL OUT THE LENS CAP ASSEMBLY. TOOLS CAN CAUSE DAMAGE TO THE LENS CAP.
 (4)  Carefully pull out the lens cap assembly.
　
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