1_ Volume change
 The volume of announcements and chimes is increased/decreased
 by pushing the related PLUS/MINUS button on the subpanel.
 2_ Default values
 Push the DEFAULT button on the subpanel to reset all
 modifications to the CAM default values.
 3_ Save changes
 To save the changes push the SAVE button. Without saving the
 new entries, the previous settings stay valid after leaving
 the page.

 (a) General The CIDS gives the possibility to change the brightness of the screen and to change the volume settings for the FAP related loudspeaker and headphone.
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 FAP - Layout Selection Page (only Layout Selection related buttons labeled) -
Example
 Figure 060 
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 FAP - Level Adjustment Page (only Level Adjustment related buttons labeled) -
Example
 Figure 061 
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 (b) Operation (Ref. Fig. 062) To change the settings, select the FAP SET-UP page on the FAP.
 1_ Change of brightness
 The brightness of the FAP is increased/decreased by pushing
 the related PLUS/MINUS button.
 2_ Headphone volume
 To increase/decrease the volume of the headphone connected to
 the FAP, push the related PLUS/MINUS button.
 3_ Acoustic activation
 To activate/deactivate the key click which is emitted after
 pushing a button on the FAP, push the TOUCHSCREEN CLICK ON/OFF
 button.
 4_ Loudspeaker volume for key click
 To increase/decrease the volume of the loudspeaker integrated
 in the FAP, push the related PLUS/MINUS button.
 5_ Default values
 Push the DEFAULT button to reset the changes to the CAM
 default values.
 6_ Save changes
 To save the changes push the SAVE button. Without saving the
 new entries, the previous settings stay valid after leaving
 the page.
 8. Test Bite_________
 A. General

 The CIDS has an extensive self-monitoring capability. When all electrical power (normal and essential power at director inputs) is connected to the CIDS, a power-up test of the system is started. The progress of the test is shown with a bar graph on the FAP. The BITE finds at least 95% of the failures and isolates at least 85%. These failures are written into the BITE memory of the directors and are sent to the Centralized Fault Display System (CFDS) in normal and interactive mode. The display units of the CFDS are called MCDUs. There are two MCDUs in the cockpit. The indication of the failures depends on their importance. Example:
 -
The CIDS caution light comes on (flashing),

 -
The messages are shown on the FAP and/or on the ECAM in the cockpit (the ECAM is activated via SDAC).

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 FAP - FAP Set-Up Page (only FAP Set-Up related buttons labeled) - Example

 Figure 062 
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 The CIDS also memorizes failures which are reported from the connected systems and sends the failure messages to the CFDS. Parts of the failure messages (ATA references, FIN's and locations) are stored in the Cabin Assignment Module (CAM). The failure handling/memorization is done in relation to the flight phases. The commands are sent from the CFDS to the CIDS. The failures are classified as class 1, 2 or 3 and as internal or external failures.
 B. Normal Mode In the normal mode only failures (class 1 and 2) which are detected during the current/last flight are sent continuously to the CFDS. It is started when the system is supplied with power. If a failure is detected during a flight, the related failure message is stored in the BITE memory and transmitted continuously to the CFDS until the start of the next flight. A disappearance of the failure has no effect, the failure is still in the BITE memory.
 C. Interactive Mode In the interactive mode a dialogue between the CIDS and the CFDS happens. On request from the MCDU, the CIDS sends menu pages related to the MCDU keys. The interactive mode is not related to the flight phases or to the landing gear status. Instead, the interactive mode is operated by commands. This means for example that when a DC1 or DC2 command is received, the interactive mode is stopped. The interactive mode also stops and the normal mode comes on, when the RETURN command is pushed on the MAIN MCDU page. Each A/C has a printer. The print function is available on every MCDU page except for the MAIN page. For additional information about: MCDU (Ref. 22-82-00) Printer (Ref. 31-35-00)
　
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