A320飞机维护手册 AMM 指示/记录系统 3(89)

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R  changed automatically. In these cases, any scratchpad data are 
R  deleted. Otherwise, scratchpad data is retained when the displayed 
R  page is changed. During a page change, scratchpad entries are 
R  ignored. 
R 
R  (9) Clearing Data Fields 
R  Data fields on the MCDU can be cleared using the CLR key. 
R  Activating the CLR key when the scratchpad is empty results in CLR 
R  being displayed. This appears in columns 6 to 8 of the scratchpad. 
R  Then, activating the LS key adjacent to the data field results in 
R  clearing that data and the scratchpad line is cleared. 
R  If the data have a default or computer calculated value, the data 
R  revert to this value. If the default value is cleared, the clearing 
R  has no effect and there is no message displayed. 
R  To remove a CLR prompt from the scratchpad, the CLR key can be 
R  activated again once. Or any alphanumeric key can be activated 
R  erasing the CLR in the scratchpad and entering the alphanumeric. The 
R  computer must distinguish between the CLR key and C-L-R being entered 
R  into the scratchpad via alphanumeric keys. C-L-R does not enable the 
R  clearing function. 
R 
R  (10) MCDU Data Field Display 
R  Generally, a data is displayed on two lines: 
R  - the label line above the data line, 
R  - the data line next to the LS key. 
R 
R  On the data line there are five kinds of display: 
R  - Cyan data if the data is already in the computer and the operator 
R  can modify it.

 

R  - Green data if the data is already in the computer but it cannot be 
R  modified by an operator entry. 
R  - Cyan brackets (- -) if no value is defined and the operator can 
R  enter the data. 
R  - Amber boxes ( ) if no value is defined. Then the data entry is 
R  mandatory for the correct functioning of the system. Or for the 
R  achievment of the function described on the page or on the label 
R  line. 
R  - White dashes ( --- ) if the field is filled by the computer but not 
R  yet available. Due to lack of information or a computation has not 
R  yet been or a computation has no yet been achieved. 
R  The entry format of data is described by the number of boxes or the 
R  place occupied by the brackets, or the spaces between brackets. On 
R  one data line, several data may be displayed and entered : the 
R  different fields are separated by a slash ('/'). 
R  Each field may be entered separately; it is identified by the number 
R  of slashes in front of the entered data: 
R  e.g.: EQ/SYS/LAB/SDI 
R  to modify the label, the operator has to enter into the scratchpad : 
R  '//label'. 
R 
R  (11) Clearing Messages Any message that is displayed can be cleared by 
R  activating the CLR key. Messages are automatically cleared under the 
R  following conditions: 
R  - when data are entered into the scratchpad, 
R  - when LS or MODE key is activated, 
R  - when the reason is no longer valid. 
R  (12) Sereval MCDU's 
R  (Ref. Fig. 013) 
R  The DMU communicates with one MCDU only at the same time. If MCDU 
R  communication is requested from any of these MCDU's while 
R  communication is already active an other MCDU, the DMU respond with 
R  the Message: "AIDS (TIMEOUT)". 
R 

R 1EFF : 151-199, 201-210, 1 31-36-00Page A28 1 1 Config-2 May 01/05 1 1 1CES 1

 

R **ON A/C 106-149, 211-299, 301-399, 401-499,

 E. MCDU Operation The MCDU is controlled by line select keys, mode keys and function keys.
 (1)
 Entering the AIDS Mode (Ref. Fig. 014) To get access to the AIDS functions, push the 'MCDU MENU' mode key. The MCDU shows the 'MCDU MENU' page. If the operator pushes the line select key adjacent to 'AIDS', he get access to the AIDS Main Menu.

 (2)
 MCDU Return Function (Ref. Fig. 015) If you push the line select key adjacent to 'RETURN', the MCDU display shows the next higher or previous MCDU page.

 (3)
 MCDU Display Print (Ref. Fig. 016) If you push the line select key adjacent to PRINT*, the display content of the MCDU is sent to the cockpit printer. A print out is transmitted with a header to the printer. The header contains the A/C identification, the print date, UTC, city pair and the flight number.
　
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