Motorola E398 series Guía

Motorola GmbH, CSS Center Flensburg, Mobile Devices

Doc. No: TSG_E398

Version: 0.9c

Date: 17.06.2005

Title: Troubleshooting-Guide E398 Page: 1 / 12

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E398 DebugGuide

Motorola GmbH, CSS Center Flensburg, Mobile Devices

Doc. No: TSG_E398

Version: 0.9c

Date: 17.06.2005

Title: Troubleshooting-Guide E398 Page: 2 / 12

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Table of Contents

1.0 - Preamble

2.0 - Some Basic Tips

2.1 - Software Upgrade

2.2 - Visual Inspection

2.3 - Cross Check

2.4 - Solder Process

3.0 - Top 10 Defective Parts

4.0 - Most frequently Failure Codes and Root Causes

5.0 - Troubleshooting

5.1 - Alert

5.2 - Audio

5.3 - Battery

5.4 - Charging

5.5 - Display Backlight

5.6 - Main Keypad

5.7 - Power Up (TON01)

5.8 - Power Up (TON03)

5.9 - TX

Modified Date By

Motorola GmbH, CSS Center Flensburg, Mobile Devices

Doc. No: TSG_E398

Version: 0.9c

Date: 17.06.2005

Title: Troubleshooting-Guide E398 Page: 3 / 12

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1.0 - Preamble

This Document was created to assist Analyzers, when fixing Problems on Motorola

GSM Phones. All Information was collected during the Repair in the Repair

Entitlement Group Flensburg.

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Doc. No: TSG_E398

Version: 0.9c

Date: 17.06.2005

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2.0 - Some Basic Tips

2.1 Software upgrade

- always use the latest Software available for the phone (Software-

bugs are excluded)

2.2 Visual inspection

- check for liquid damage (water indicator)

- check for missing, broken or unsoldered parts

- check for mechanical damage (board twisted, tracks defect etc.)

2.3 Cross check

- before beginning to replace/change parts or soldering anything

try to consider the failure from all sides.

2.4 Solder process

- the soldering process of lead-free products always must be done

with the aid of a bottom-heater and flux for lead-free soldering

- always cover sensitive parts with shields

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Doc. No: TSG_E398

Version: 0.9c

Date: 17.06.2005

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3.0 - Top 10 Defective Parts

This is the Analysis of the repaired Phones in NPI-Process, related to the first repair

works at all.

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Doc. No: TSG_E398

Version: 0.9c

Date: 17.06.2005

Title: Troubleshooting-Guide E398 Page: 6 / 12

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4.0 - Most frequently Failure Codes and Root Causes

ALTxx - U900

AUDxx - Microphone, J2000, U900, U800

BATxx - U50

CHGxx - J1400, Fl1400, U900, J950, CR900, U900

DIMxx - J1301, L960, D960

MKPxx - Keyboard, J1401, J1301, U1400, U1401, S1460, SW100, SW1402,

U800

TON01 - Y900, U900, Y805, U800, U700

TON03 - Y900, U900

CPRxx - U50, U150, J40

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Doc. No: TSG_E398

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5.0 - Troubleshooting

5.1 - Alert - Customer Complaint: ALTxx

1.) If the Alert is not working

check:- Chassis Speaker Assy

- J1261

- the Components around D961

- the Components around D962

- for Dry Joints, Solder Shorts, damaged and skewed Parts

- replace missing or damaged Components

2.) If the Alert is still not working

replace: - U900

Components around D961/

D962

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Doc. No: TSG_E398

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5.2 - Audio - Customer Complaint: AUDxx

1.) If Audio is not working

check:- the Microphone

- J2000

- the Components around the Microphone

- the Components around TP1200

- the Components around TP1201

- the Components around U900

2.) If Audio is still not working

check at TP1200 and TP1201 ≈1,4V DC

replace: - U900 (if not effective)

- U800

TP1200

TP1201

5.3 - Battery - Customer Complaint: BATxx

1.) If the Battery and/or the PA-Area is getting hot

replace: - U50

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5.4 - Charging - Customer Complaint:CHGxx

1.) If charging is not possible

check:- J1400

- FL1400

- U900

- J950

- CR900

- for Dry Joints, Solder Shorts, damaged and skewed Parts

- replace missing or damaged Components

2.) If charging is still not possible

check “BATT FDBK” at CR900 (if not effective)

replace: - U900

BATT FDBK

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5.5 Display Backlight - Customer Complaint: DIMxx

1.) If the Display Backlight is not working

check:- J1301

- for Dry Joints, Solder Shorts, damaged and skewed Parts

- replace missing or damaged Components

2.) If the Display Backlight is still not working

check the “BACKLIGHT 5V” at C1454

replace: - L960 (if not effective)

- D960

BACKLIGHT 5V

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