Bay Off Switches (PALLET Mode)
Action Sw Bay(s) Effected PDU Rows Active
Toggle On D D 8, 9
Toggle On E D, E, F 8, 9, 10, 11, 12
Toggle On F D, E, F 8, 9, 10, 11, 12
Bay Off Switches (PALLET Mode)
Action Sw Bay(s) Effected PDU Rows Active
Toggle On G D, E, F, G 8, 9, 10, 11, 12, 13, 14
Toggle On H D, E, F, G, H, I 8, 9, 10, 11, 12, 13, 14, 15, 16
Toggle On I D, E, F, G, H, I 8, 9, 10, 11, 12, 13, 14, 15, 16
Action Sw Bay(s) Effected PDU Rows Not Active
Toggle Off D D, E, F, G, H, I 8, 9, 10, 11, 12, 13, 14, 15, 16
Toggle Off E E, F, G, H, I 10, 11, 12, 13, 14, 15, 16
Toggle Off F E, F, G, H, I 10, 11, 12, 13, 14, 15, 16
Toggle Off G G, H, I 13, 14, 15, 16
Toggle Off H H, I 15, 16
Toggle Off I H, I 15, 16
The PDU erect command does not operate (ball panel area only) the longitudinal PDUs when the cargo control joystick is moved to IN or to OUT. Lateral PDUs erect command stops when the cargo control joystick is moved to FWD or AFT. The erect command for all PDUs stops when there is no system ac power.
EFFECTIVITY BEJ ALL 25-53-00
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CARGO HANDLING SYSTEM -FUNCTIONAL DESCRIPTION -PDU
Longitudinal PDUs -Ball Panel
The CSC uses almost the same logic to control longitudinal PDUs in the ball panel area as it uses for the PDUs in the forward and aft bays. The PDU forward/aft switch and the secondary joystick do not control the longitudinal PDUs in the ball panel area. The CSC also controls the erect/brake and down conditions for these PDUs. The PDUs go to the down condition when the cargo control joystick is set to IN or OUT.
Longitudinal PDUs -Ball Panel/Forward Bays
Longitudinal PDUs in the forward cargo bays stay in the erect/ brake condition when system ac power is on and the PDUs are not commanded to the erect/drive condition.
PDUs in the ball panel and forward bays go to the erect/drive condition when all of these events occur:
*
System set to PDU FWD
*
Cargo control joystick to FWD or AFT or secondary joystick to FWD or AFT (secondary joystick affects only PDUs fwd or aft of ball panels)
*
Forward lateral guides in the down position.
EFFECTIVITY BEJ ALL
The position of the PDU left/both/right switch and the container/ pallet switch controls which minor group of longitudinal PDUs go to the erect/drive condition when the cargo control joystick is set to FWD or AFT. If BOTH or PALLETS is set, then all PDUs in the area go to erect/drive condition. If CONTAINERS and LEFT or RIGHT is set, then only the PDUs in the area on the related side go to the erect/drive condition.
Longitudinal PDUs -Ball Panel/AFT Bays
Control for the longitudinal PDUs in the ball panel and aft bays is the same as the ones in the forward bays except for the following.
PDUs in the ball panel and aft bays go to the erect/drive condition when all of these events occur:
*
System set to Bay ON for at least one bay
*
System set to PDU AFT
*
Cargo control joystick to FWD or AFT or secondary joystick to FWD or AFT (secondary joystick affects only PDUs fwd or aft of ball panels)
*
Aft lateral guides in the down position
*
Aft lateral guides in the down position.
Lateral PDUs
All lateral PDUs go to the erect/drive condition when all of these events occur:
* System set to PALLETS
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CARGO HANDLING SYSTEM -FUNCTIONAL DESCRIPTION -PDU
* Cargo control joystick to IN or OUT.
The forward set of lateral PDUs go to the erect/drive condition when all of these events occur:
*
System set to CONTAINERS
*
Cargo control joystick to IN or OUT.
EFFECTIVITY BEJ ALL 25-53-00
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CARGO HANDLING SYSTEM -FUNCTIONAL DESCRIPTION -PDU 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：777 AMM 飞机维护手册 Equipment and Furnishings(33)
