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737-700 MAINTENANCE TRAINING MANUAL
A31-62-00-801.fm
CDS - SOFTWARE LOADING DEU Software You can load software in a DEU or download BITE data from a DEU. These are the types of software you can load in the DEUs: -Operational software -Operational program configuration -Display unit data base. Operational Software (OPS) The operation software is the software that operates the DEU. It takes a maximum of 90 minutes to load the OPS into each DEU. Operational Program Configuration (OPC) The OPCs replace most of the hardware program pins used in other airplanes. The OPCs define the customers configuration options. It takes approximately 5 minutes to load the OPC into each DEU. Display Unit Data Base (DUDB) There are several different types of display units for the common display system. The DUs are interchangeable. The DEU requires information about the drive signals for each type of DU. The DU data base has the information about the drive signals. You can load the DUDB into the DEU. It takes approximately 5 minutes to load the DUDB into each DEU.
Operation to Load Software
To load software into the DEU, use the data loader control panel. The engines must be off.
Select the DEU position on the lower switch on the data loader control panel. Select the left or right position on the upper switch on the data loader control panel.
Connect the portable data loader to the data transfer receptacle and put the diskette in the portable data loader.
NOTE: pull the data loader circuit breaker, located on the P18 panel, when connecting and disconnecting the data loader. See AMM Part 2 for more details.
When the data load is complete, you can verify that the new software part number shows on the CDS IDENT/CONFIG page.
Compatibility Checks
The DEU determines if these are not compatible:
-OPS and DEU hardware
-Program pins in DEU 1 and DEU 2
-OPS to airplane type
-OPS to OPC
-DEU 1 to DEU 2 software.
If the OPS is not compatible with the DEU, the OPS will not load into the DEU. The other compatibility checks are done automatically at initialization. If the DEU finds anything that is not compatible, you see a CDS FAULT maintenance message.
January 1, 2004
31-62
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737-700 MAINTENANCE TRAINING MANUAL
CDS - SOFTWARE LOADING Operation to Download BITE Data
The DEU can download BITE data to a diskette. The diskette must be preformatted to accept the download of the data.
To download the BITE data, put the formatted diskette in the portable data loader. Select the DEU position on the lower switch on the data loader control panel. Select the L or R position on the upper switch on the data loader control panel. The DEU automatically downloads the data to the diskette. The portable data loader shows that the load is done.
Training Information Point
When you select DEU 1 or 2 on the data Load selector, that DEU does not drive any display units. The other DEU provides the data for all 6 DUs, and CDS FAULT shows.
　
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