MCDU BITE PAGES - SW OPTIONS
General
To see the software options page, select SW OPTIONS on LSK 1R from the CDU MAINT BITE INDEX page.
Software Options Page
The software option page shows the status of the options that are in the MCDU software options database.
The software option code is an eight-digit hexadecimal number. These option codes are available:
-No option code - 00000000
-Switching mode - 00000001
-ARINC 739 color usage - 00000002
-Switching mode & ARINC 739 color usage - 00000003.
The enabled options show at line 3L. If there are no option codes enabled, NONE shows.
Line 6L shows the INDEX prompt. This selects the CDU MAINT BITE INDEX page.
Line 6R allows the entry of the word ARM. This is a necessary entry to enable software option entry on this page. After you enter ARM and push LSK 6R, you may enter the new software option into the scratch pad and line select it to the option code (LSK 1R).
NOTE: When you enter an option code, all eight digits must be entered.
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MCDU BITE PAGES - POWER SUPPLY
General
To see the MCDU power supply page, select P/S on LSK 2R from the CDU MAINT BITE INDEX page.
Power Supply Page
This page shows the voltage levels from the CDU power supply. These voltages come from the power supply:
-+5v dc
-+12v dc
--12v dc
-+26v dc
-+28v dc
-Switched +28v dc
-Annunciator +5v dc.
NOTE: The switched 28v dc power supply is only active when the CDU heater is on and the voltage will be displayed. If the heater is off, the data field will be blank.
Line 6L shows the INDEX prompt. This selects the CDU MAINT BITE INDEX page.
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MCDU BITE PAGES - TEMP SENSORS
General
To see the CDU TEMP SENSORS page, select TEMP on LSK 3R from the CDU MAINT BITE INDEX page.
Temperature Sensors Page
This page shows the temperature values from the sensors in the LCD module and the backlight assembly. It also shows the operational status of the thermal electric coolers (TEC) and the heater.
Line 6L shows the INDEX prompt. This selects the CDU MAINT BITE INDEX page.
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MCDU BITE PAGES - LIGHT SENSORS
General
To see the CDU LIGHT SENSORS page, select LIGHT on LSK 4R from the CDU MAINT BITE INDEX page. Light Sensors Page This page shows the voltage levels from the CDU light sensors. Line 6L shows the INDEX prompt. This selects the CDU MAINT BITE
INDEX page.
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