Filter
Top Products
5-4
Troubleshooting the Controller/Display
Serial Bus
Serial Bus
The serial bus controls many of the assemblies through individual serial control lines. The
serial control lines are generated at the A33 Hop Controller.
The A33 Hop Controller takes parallel data from the A7 Controller and de-multiplexes the
data for the assemblies on the serial bus. In the power-up self-tests, the A33 Hop
Controller and the assemblies on the serial bus are tested. If a power-up self-test serial bus
failure occurs and no A33 failures have occurred, the problem could be between the A33
Hop Controller and the assembly identified in the failure.