Keypad/Side Keys - No Function/Hangs - Motorola MotoRAZR maxx V6 Manual

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Title: Troubleshooting-Guide MotoRAZR maxx V6
Keypad/side keys – no function/hangs
Due to the keypad matrix architecture with 8 rows in 8 columns it is quite useful to verify
which keys (if not all) are affected. By knowing which keys are not working, it is possible to
find out which row or column is affected. You can use an Ohm Meter to check the resistance
to GND for verification, which line is affected. By using the MotoPCB it can be tracked which
filters the signal passes until it reaches the ARGON.
In practice the defective part can very often be found by doing a visual inspection. Check:
- J2300
- FL2305
- FL2306
- FL2307 for solder shorts/dry solder joints/defective part.
If the keypad connector/filters are ok, it's most likely a problem with the ARGON – forward to
an authorized level 4 service center.
Repair Support Information
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Figure 23
Figure 24
© Copyright 2003-2007 Motorola Inc. All Rights reserved.
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