Turn Off - Powers Down In Standby; Battery Life Short/Charging Problems/No Turn On Due To Excessive Current Drain - Motorola MotoRAZR maxx V6 Manual

Motorola GmbH, Mobile Devices, CSS Center
Title: Troubleshooting-Guide MotoRAZR maxx V6
Turn off – powers down in standby
If radio stores panic: DSM_MEASUREMENT_ERROR there is most likely a problem with the
32.768 KHz clock, on which the radio is running while entering the deep sleep mode.
- Change Y3986
sleep mode
- If radio still powers down, change ATLAS IC
If radio soft resets/power cycles and turns on again (possibly with a blank/white screen) try
doing a software upgrade with latest operator approved software. If the trouble remains, it
could be a problem with the ATLAS IC
authorized level 4 service center.

Battery life short/charging problems/no turn on due to excessive current drain

In probably most cases these problems are caused by an off current. Start with verifying,
whether there is an off current. If there is an off current, it should be checked whether the
radio draws current via battery and/or via external power supply (USB).
In case of an off current via battery there should be a low resistance (less than ~200 Ohm)/
or a short from BATT+_RAW
To localize the defective part causing the short/low resistance a simple but effective way is to
freeze the board with a coolant spray, supply a battery voltage from a power supply using
micro clamp-type test probes, and see which parts are getting warm. This is a very basic
and essential method to troubleshoot off current/ high current consumption failures.
The power supply (for BATT+_RAW) should be set to 3.8Vdc with current limitation set to 2A.
We recommend using the Power Supply Unit current drain meter to check the current drain
of the PCB.
Shields covering suspected parts should be removed before freezing the PCB.
The PCB should be handled with care. After removing the shields the PCB should be given
some time to cool down slowly before freezing it to far below zero to avoid physical stress to
the multilayer PCB with lead free soldered parts.
In some cases the part, which is getting warm has an internal short itself. After removing this
part, the off current should be fixed. For verification, check off current or measure resistance
BATT+_RAW (J5400-1) to GND. A new part can be placed.
If the short/ low resistance remains after replacing the part which was getting warm, it should
be checked which signals/ voltages this part provides. In most cases this part will provide a
supply voltage to other parts which can also get warm due to an internal short.
Repair Support Information
and test radio with a network SIM card and let radio entering the deep
U3000
(J5400-1) to GND.
Doc. No:
Version:
Date:
Page:
U3000
or with the ARGON U1000
© Copyright 2003-2007 Motorola Inc. All Rights reserved.
Motorola internal use
TSG_3G_V6
1.0
23.07.2007
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