AMM 29-22-00 PB 001 CONF 00 - BLUEAUXILIARY HYDRAULIC POWER - DESCRIPTION AND OPERATION
H. Electrical and Hydraulic Override Pushbutton Switches (24XE, 2805GE)
The elec ovrd (24XE) and hyd ovrd (2805GE) pushbutton switches are installed in the flight compartment. The hyd ovrd pushbutton switch is on the HYD section of the overhead panel 40VU. The elec ovrd pushbutton switch is on the EMER PWR section of the overhead panel 21VU. Both pushbutton switches make it possible for the flight crew to extend the RAT from the flight compartment. Both pushbutton switches have guards to stop accidental operation.
The hyd ovrd pushbutton switch (identified as RAT /MAN/ON in the flight compartment) when operated connects the 28 V DC supply from HOT BUS 1, 701PP directly to solenoid 1.
The elec ovrd pushbutton switch (identified as RAT & EMER GEN/MAN ON/AUTO in the flight compartment) when operated connects the 28 V DC supply from No. 2 BATTERY through circuit breaker 6XE to solenoid 2. At the same time the 28 V DC is supplied to the control unit of the CSM/G 8XE.
也就是说,两个P/B接通以后的28VDC来源不同,ELEC面板按钮同时还会接通CSM/G
这张图应该能看的比较清楚,左下部分 |