Figure 20 WLAN alignment targets
Keyboard troubleshooting
Context
There are two possible failure modes in the keyboard module:
• One or more keys can be stuck, so that the key does not react when a keydome is pressed. This kind of
failure is caused by mechanical reasons (dirt, rust).
• Malfunction of several keys at the same time; this happens when one or more rows or columns are failing
(shortcut or open connection). For a more detailed description of the keyboard and keymatrix, see section
Keyboard.
If the failure mode is not clear, start with the Keyboard Test in Phoenix.
RM-179; RM-223
Baseband Troubleshooting
Page 3 –24
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