Troubleshooting Guide - Motorola V3i Troubleshooting Manual

Motorola GmbH, CSS Center, Mobile Devices
Title: Troubleshooting-Guide V3i / V3_05

Troubleshooting Guide

First Step
Please make sure beforehand, that the problem at hand is not a SW related issue that can be
solved with a 1FF update and a Master Reset/Clear. In many cases a simple Master Reset can
already fix the problem.
The following section is meant to be a help in troubleshooting problems which are already
Identified as PCB related
ALT01 Alert – Ring tone, no
ALT02 Alert – Ring tone, low
ALT03 Alert – Ring tone, noise/distortion
Check ALERTP and ALERTM -- both should have around 2.1Vdc
If not check L1422/L1423/ for broken connection,C1424 for low resistance
-
VR1400/VR1422/VR1423 for shortcut to ground
- check PCB for open tracks from ALERTM to U900-V10 /ALERTP to U900-U8
- you can either use"Repair-Studio" to switch on 1 kHz tone to the alert to check for
open tracks, but be careful: You can have 1 kHz and audio in call at
ALERTM/ALERTP, but no alert-tone, because the ATLAS is defect!
if 1kHz is ok, replace Atlas (U900). Please use underfilm for U900.
The alert signal is converted to analog and amplified by the ATLAS, but generated by the
Neptune, so if the ATLAS alert audio path is ok there could be a problem with the
Neptune not generating the alert signal.
ALT11 Alert – Vibrator, no
ALT12 Alert – Vibrator, weak
Turn on vibrator using Repair Studio/ Radiocomm. Measure V_VIB – should be about
2Vdc.V_VIB is provided directly by the ATLAS (U900).To verify if the vibrator is defective
a simple method is to provide a supply voltage (1Vdc should be enough) via test probes
directly on the vibrator G1 (radio in off state!).It should be rotating, if not replace the vibrator
G1.Check the diode D_VIB . Otherwise replace ATLAS (U900). Please use underfilm for
U900.
Repair Support Information
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© Copyright 2003-2006 Motorola Inc. All Rights reserved.
Motorola internal use
TSG_V3i/V3_05
04.09.2006
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