20FT CARGO CONTROL PANEL (M546) A
20ft Cargo Control Panel Installation Figure 401
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747-400 MAINTENANCE MANUAL
S 024-025
(8) Remove the control panel.
TASK 25-57-13-404-006
3. 20FT Cargo Control Panel Installation (Fig. 401)_____________________________________
A. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 25-57-00/501, Main Deck Cargo Handling System
B. Access
(1) Location Zone
210 Main Deck
C. Install the 20FT Cargo Control Panel
S 864-007
(1)
Make sure the 415F18, CARGO HANDLING CONT MN DK circuit breaker is open on the P415 Power, Distribution Center Right Panel.
S 424-008
(2)
Attach the hinge on the control panel to the lining with the screws.
S 434-026
(3)
Push the wire bundle through the hole in the lining.
S 434-027
(4)
Connect the electrical connector plugs (P1, P2 and P3) to the electrical receptacles (DM456A, DM456B and DM456C).
S 434-028
(5)
Attach the wire bundle clamps to the lining with the screws.
(6)
Close the control panel.
S 434-029
(7)
Turn the three quick-release fasteners clockwise to lock the control panel to the lining.
S 864-011
(8)
Remove the DO-NOT-CLOSE tag and close this circuit breaker:
S 414-010
(a) P415, Power Distribution Center Right Panel 1) 415F18, CARGO HANDLING CONT MN DK
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D. Do a Test of the 20FT Cargo Control Panel
NOTE: This test will make sure there is electrical power supplied to the
____ 20FT cargo control panel. Refer to AMM 25-57-00/501 for the full operational test of the 20FT cargo control panel.
S 864-013
(1)
Supply electrical power (AMM 24-22-00/201).
S 714-014
(2)
Push the SYSTEM POWER ON switch momentarily on the master cargo control panel (M1).
NOTE: The master cargo control panel is between the 20FT cargo
____
control panel and the side cargo door.
S 714-015
(3) Push the 20FT CONTROL ON/OFF switch momentarily on the master cargo control panel.
NOTE: The 20FT CONTROL ON light will come on.
____
S 214-016
(4)
Make sure the CONTROL ACTIVE light on the 20FT cargo control panel comes on.
S 714-017
(5)
Push the LAMP TEST switch momentarily on the 20FT cargo control panel.
S 214-030
(6)
Make sure all the indicator lights on the 20FT cargo control panel come on.
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