(b)
Make sure the beacon light comes on and flashes.
(c)
Put the BEACON switch on the P5 panel in OFF.
S 864-040
(4) Remove electrical power if it is not necessary (AMM 24-22-00/201).
TASK 33-44-09-004-016
4. Removal (Lower Beacon Light Power Supply) (Fig. 401)_________________________________________
A. References
(1)
AMM 24-22-00/201, Electrical Power
(2)
AIPC 33-44-09 Fig. 2
(3)
SSM 33-44-01
B. Access
(1) Location Zone
100 Lower Half Fuselage - Exterior
C. Procedure
S 864-017
WARNING: DO NOT TOUCH THE POWER SUPPLY FOR 10 MINUTES AFTER YOU REMOVE
_______ THE POWER. AN ELECTRICAL SHOCK FROM THE HIGH VOLTAGE IN THE POWER SUPPLY CAN CAUSE INJURY TO PERSONS.
(1) Open this circuit breaker and attach a DO-NOT-CLOSE tag:
(a) P6 Main Power Distribution Panel
1) 6L31 ANTI COLL LTS RED
S 014-018
(2) Release the fasteners on the access panel adjacent to the lower beacon light to get access to the power supply.
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A
747-400 MAINTENANCE MANUAL
S 004-038
(3) Do these steps to remove the power supply:
(a)
Disconnect the electrical connector.
(b)
Remove the mounting bolts.
(c)
Remove the power supply.
TASK 33-44-09-404-021
5. Installation (Lower Beacon Light Power Supply) (Fig. 401)______________________________________________
A. References
(1)
AMM 24-22-00/201, Manual Control
(2)
SSM 33-44-01
B. Access
(1) Location Zone
100 Lower Half Fuselage - Exterior
C. Procedure
S 404-036
(1) Do these steps to install the power supply:
(a)
Put the power supply in its position.
(b)
Install the mounting bolts.
(c)
Connect the electrical connector.
S 414-024
(2) Close and latch the access panel.
D. Installation Test
S 864-025
(1)
Supply electrical power (AMM 24-22-00/201)
S 864-026
(2)
Remove the DO-NOT-CLOSE tag and close this circuit breaker:
(a) P6 Main Power Distribution Panel 1) 6L31 ANTI COLL LTS RED
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747-400 MAINTENANCE MANUAL
S 714-027
WARNING:_______DO NOT LET THE STROBE LIGHT FLASH DIRECTLY IN YOUR EYES. THE INTENSITY OF THE STROBE LIGHT CAN CAUSE DAMAGE TO YOUR EYES.
(3) Do these steps to do the test of the power supply:
(a)
Put the BEACON switch on the P5 panel in LWR.
(b)
Make sure the lower beacon light comes on and flashes.
(c)
Put the BEACON switch on the P5 panel in OFF.
S 864-030
(4) Remove electrical power if it is not necessary (AMM 24-22-00/201).
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