On/Off Switch Not Working - Motorola MotoRAZR maxx V6 Manual

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Title: Troubleshooting-Guide MotoRAZR maxx V6

On/Off switch not working

The On/Off button function can easily be checked by attaching a known good flip assembly
to the PCB. By inserting an EMU Bus USB cable the phone should turn on. Check
ON_OFF_END_B
Button is pressed.
- If signal is at HIGH level and not switching down when On/Off button is pressed,
check J2300
- If signal is always at LOW level or down (below 2.8Vdc), check R3993/C3955. If they
are ok, it is most likely a problem with the ATLAS IC U3000.
Repair Support Information
at FL2307-8. It should be a HIGH signal of 2.8Vdc and LOW signal if
and FL2307.
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Figure 25
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