User Interface Troubleshooting; Keyboard And Side Keys Troubleshooting - Nokia 300 Service Manual

RM-781
BB Troubleshooting and Manual Tuning Guide

User interface troubleshooting

Keyboard and side keys troubleshooting

Context
Possible failure mode in the keyboard module:
• One or more keys are stuck, so that the key does not react when a keydome or a side key is pressed. This
kind of 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.
Troubleshooting flow
Issue 1 COMPANY CONFIDENTIAL Page 3 – 23
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