HP 16500B - Manual (Page 72)

To test the expansion frame interface
This procedure is used during troubleshooting to isolate a failed interface component, the
interface cable, the expansion frame interface card, or the HP 16500L. The Option Board Test
in the performance verification software generates bit patterns across the data, address, and
strobe lines of the interface. Isolation is done by using an oscilloscope to check activity on the
address and data buses and the strobe signal lines.
Refer to chapter 6, "Replacing Assemblies," for instructions to remove or replace covers and
assemblies.
W A R N I N G
Hazard voltages exist on the power supply, the CRT, and the CRT driver board. This
procedure is to be performed by service-trained personnel aware of the hazards involved,
such as fire and electrical shock.
Equipment Required
Equipment Critical Specification Recommended
Model/Part Number
Oscilloscope 100MHz Bandwidth HP 54600A
Before beginning this procedure, verify that the HP 16500L interface is properly installed and that
the expansion frame interface card and interface cable are properly seated.
Set up the Expansion Frame
1 Remove power from the HP 16500B system and unplug the power cords from both
the mainframe and the expansion frame.
2 Set the expansion frame on its side with the strap handle facing up. Remove the
bottom cover from the expansion frame.
3 Plug the power cords into both the mainframe and expansion frame, then apply
power.
4 In the System Configuration menu, select Configuration. Select Test , then touch the
box to load the test system.
5 Select Test, then select Mainframe Tests in the pop-up menu. Select Option Board
Tests, then select Run-Repetitive.
Troubleshooting
To test the expansion frame interface
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