TONEOHM 950 OPERATOR MANUAL
4-16
• Connect the Drive Source leads across the faulty lines.
• Adjust the Drive Source control so that the Trace Probe responds within 10mm of one
of the Drive Source leads.
• Pass the Probe over each suspect IC, with the thickest sides of the probe tip parallel
to the IC pin sides.
• The defective IC will be conducting Drive Source current through its substrate, which
will be detected by the probe.
Edge Connectors
Shorts between two pins of a row of edge connectors can be detected by connecting the Drive Source as
shown in Figure 4-8.
DRIVE SOURCE
SHORT
1
2
3
4
5
Figure 4-8 Edge Connector Shorts
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