User Interface Troubleshooting; Keypad Troubleshooting - Nokia RM-721 Service Manual

RM-721; RM-722
BB Troubleshooting and Manual Tuning Guide
Troubleshooting flow - Page 2 of 2

User interface troubleshooting

Keypad troubleshooting

Context
If one or more keys are stuck, so that the key does not react when a keydome key is pressed, the failure is
caused by mechanical reasons (dirt, rust, mechanical damage, etc.)
If the failure mode is not clear, start with the Keyboard test in Phoenix.
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