Motorola V3i, V3 razor 05 Troubleshooting Manual

Motorola GmbH, CSS Center, Mobile Devices

Doc. No: TSG_V3i/V3_05

Date: 04.09.2006

Title: Troubleshooting-Guide V3i / V3_05 Page: 1 / 22

Repair Support Information

Troubleshooting Guide V3i and V3_05 – Level 3/4

This document was created to assist analyzers troubleshooting Motorola GSM Phones. All Information was collected during the repair in the Repair Entitlement Group Flensburg

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Doc. No: TSG_V3i/V3_05

Date: 04.09.2006

Title: Troubleshooting-Guide V3i / V3_05 Page: 2 / 22

Repair Support Information

Contents

Requirements

- System requirements

- Basic information on troubleshooting Motorola GSM Phones

- Advice on working with lead soldering/underfilm

Top Ten defect parts Troubleshooting Guide

- ALTxx

- AUDxx

- ACCxx

- BATxx

- CHGxx

- CPRxx

- DAPxx

- DIMxx

- DISxx

- FTRxx

- MKPxx

- OPRxx

- SIKxx

- SIMxx

- TONxx

Follow up faults caused by failed repair actions Flash procedures

- Software Update

- Recovering Flash memory in Forced Flash Mode

- Image Flash

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Doc. No: TSG_V3i/V3_05

Date: 04.09.2006

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Repair Support Information

Requirements

- System Requirements

- Power Supplies,Oscilloscope,Spectrum Analyzer, Test Set

- Preheater for lead free soldering/solder machine for BGA`s

- Microscope

- Repairstudio/Radiocomm

- Field Service Bulletins

- FASTT

- Block diagrams/Schematics

- PinNetFinder FLVIEW

- Basic information on troubleshooting Motorola GSM Phones

- Make sure all contacts are clean, especially the EMU-Connector

- Use newest approved Software

- RESET/MASTERCLEAR can fix some issues

- Do a visual inspection on customer abuse/liquid contamination

- The Processor U800 replacement always requires a Flash IC replacement

- Advice on working with lead free soldering/underfilm

- Use lead free flux

- Use preheater(HAKKO 853)

- Use tool for resolder (PA and U250), part no 19500950 (Pre soldering Fixture)

- part no 99991966 (Metal stencil GSM Edge) part no 19501966 (Mounting Bracket GSM Edge)

part no 99991964 (Metal stencil for PA) part no 19501964 (Mounting bracket for PA)

Use of preheater

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Doc. No: TSG_V3i/V3_05

Date: 04.09.2006

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Repair Support Information

Top Ten defect parts

The following is an analysis summery of the V3i and V3_05 repaired during NPI process by the Repair Entitlement Group CSS Flensburg

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Doc. No: TSG_V3i/V3_05

Date: 04.09.2006

Title: Troubleshooting-Guide V3i / V3_05 Page: 5 / 22

Repair Support Information

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.

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Doc. No: TSG_V3i/V3_05

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Repair Support Information

Vibrator G1

D_VIB

V_VIB

ac tive:2 V from ATLAS

GND

AUDxx Audio problems

First step on every audio related problem is to identify which audio paths are affected. If the audio signals in a loop are ok, there could be an audio problem in a network call. This could be due to an ATLAS or Neptune related defect.

AUD01 Audio – Earpiece, no AUD02 Audio – Earpiece, low

Check HAND_SPKRM at C1014 and HAND_SPKRP at C1015. Both should have around

1.4Vdc offset voltage, if audio-loop is switched on and additional up to 2,7Vpp at 1 kHz, if test-tone is switched on.

- If not check J2 for solder shorts,C1014/1015 for low resistance

- (eventually) check PCB on open tracks from J2 to C1014/U900-T6 and J2 to

C1015/U900-R7

- If ok, replace Atlas (U900). Please use underfilm for U900.

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Repair Support Information

AUD07 Audio – MIC, No AUD08 Audio – MIC, Low

Set radio in audio loop using Repair Studio/Radiocomm

- check MIC BIAS1 at C1207 – should be around 1,75Vdc

- if not

check C1207/1206/1201/1202/1200/1203 for low resistance

- if ok check MIC_IN_M at C1206 while blowing into the microphone to see the

audio signal caused by the blowing

- if not replace microphone

- if ok replace ATLAS (U900) Please use underfilm for U900.

ACC07 -- Accessory - Bluetooth module, no Operation

Verify it Bluetooth can be activated and is able to find other Bluetooth devices.

- If not, check oscillator Y301 (26MHz).

- check the BLUE_WAKEB

- replace U300

- If not, replace Neptune (U800)

Note: You can only measure the signals, when Bluetooth is activated.

pulsed signal