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MCDU BITE PAGES - LIGHT SENSORS
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737-700 MAINTENANCE TRAINING MANUAL

MCDU BITE PAGES - LAMP TEST
General
To see the MCDU lamp test page, select LAMP TEST on LSK 5R from the CDU MAINT BITE INDEX page.
Lamp Test Page
This page does a test of the MCDU annunciators. The message ANNUNCIATORS ALL LT shows on the MCDU and these annunciators come on:
- FAIL 
- MSG 
- OFST 
- EXEC. 

Line 6L shows the INDEX prompt. This selects the CDU MAINT BITE INDEX page and the annunciators go out.
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MCDU BITE PAGES - LAMP TEST
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737-700 MAINTENANCE TRAINING MANUAL

MCDU BITE PAGES - CALIBRATION
General
To see the MCDU calibration page, select CALIBRATION on line select key (LSK) 6R from the CDU MAINT BITE INDEX page.
Calibration Page
This page shows the current deflection voltages and calibration factors for the LCD module. It also shows the light sensor bias level and the scale factor used.
The scratchpad shows the source of the currently used data. If the software uses calibrated data, then CALIBRATED will be shown. If it uses hardcoded defaults, then DEFAULTS will be shown.
Line select key 6L shows the INDEX prompt. This selects the CDU MAINT BITE INDEX page.
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MCDU BITE PAGES - CALIBRATION
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FMCS - FMC DATA LOADING
General
You use the portable data loader (PDL) to load data into the FMCS and other airplane systems. The steps to load data into the FMCS and the other systems are similar.
To load data into the FMCS, you set the data loader control panel selector to the FMC position. This connects the loader to the primary FMC.
You can load these databases into the FMCS:
-Operational flight program (OFP)
-Navigation data base
-Performance default data base
-Airplane model/engine performance data base
-Software options data base.

NOTE:  The performance default data base is part of the OFP and cannot be loaded separately.
Preparation
The information below shows the steps to load a navigation data base. The procedure to load the other systems data or the other FMCS data is similar.
This is a summary of the steps to load data with a PDL:
-Airplane must be on the ground
-Apply electrical power to the airplane
-Open the DATA LOADER circuit breaker

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737-700 MAINTENANCE TRAINING MANUAL
-Connect the PDL to the data transfer receptacle -Close the DATA LOADER circuit breaker -Set the data loader 3-position switch to the FMC you will load (the
L position will load FMC 1 and the R position will load FMC 2) -Set the data load selector to the FMC position -Open the data loader access door -Put the necessary diskette into the PDL.

NOTE:  The FMC source select switch on the P5 panel must be set in the BOTH ON L or NORMAL positions to see the load progress on the CDUs if FMC 1 is loaded. If the 3-position switch is in the R position, the FMC source select switch must be set to BOTH ON R to see the load progress on the CDUs.
　
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