•
Malfunction of several keys at the same time; this happens when one or more rows or columns are failing
(shortcircuit or open connection).
If the failure mode is not clear, start with the Keyboard Test in Phoenix.
Troubleshooting flow
Figure 21 Keymatrix
RM-505; RM-506
BB Troubleshooting and Manual Tuning Guide
Page 3 –34 COMPANY CONFIDENTIAL Issue 1
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