03/2003
7-3
8850/ 510DP
How To Use BSDs
Wiring Data
How To Use BSDs
Normally, you will be directed to a specific BSD from your Level 1 Entry Procedure. If you have
a problem that is not identified in Level 1, then refer to the following Level 1 BSD to determine
an entry point for troubleshooting. Note that the Level 1 BSD shows the “standard” Chains 1,
2, 3, 4, 6, 7, 8, 9, and 10. Each Level 2 BSD is shown within the Level 1 BSD. For example,
Chain 6, Imaging, contains two Level 2 Chains: Chain 6.1 Imaging (Right Side) and Chain 6.2,
Imaging (Left Side). All of the necessary inputs and outputs for each Chain and for each Level
2 BSD are shown in the Level 1 BSD.
For example, if the User Interface is not functioning properly, refer to the Level 1 BSD, Sheet 1,
and observe that Chain 2, Mode Selection is the “most likely” place to start. Then, you should
proceed to BSD 2.1 and use that information to diagnose your problem. Each BSD contains
the necessary wiring information, physical location of components information, and Diagnostic
Code information to assist you in identifying the specific fault.
NOTE: In the Block Schematic Diagrams that follow, FOR = Forever (unswitched), BULK =
switched.
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