Motorola E398 series Guida

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

Motorola internal use

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

Motorola internal use

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

Motorola internal use

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.

Motorola GmbH, CSS Center Flensburg, Mobile Devices

Doc. No: TSG_E398

Version: 0.9c

Date: 17.06.2005

Title: Troubleshooting-Guide E398 Page: 4 / 12

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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

Motorola GmbH, CSS Center Flensburg, Mobile Devices

Doc. No: TSG_E398

Version: 0.9c

Date: 17.06.2005

Title: Troubleshooting-Guide E398 Page: 5 / 12

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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.

Motorola GmbH, CSS Center Flensburg, Mobile Devices

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

Motorola GmbH, CSS Center Flensburg, Mobile Devices

Doc. No: TSG_E398

Version: 0.9c

Date: 17.06.2005

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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

Motorola GmbH, CSS Center Flensburg, Mobile Devices

Doc. No: TSG_E398

Version: 0.9c

Date: 17.06.2005

Title: Troubleshooting-Guide E398 Page: 8 / 12

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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

Motorola GmbH, CSS Center Flensburg, Mobile Devices

Doc. No: TSG_E398

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Date: 17.06.2005

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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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Doc. No: TSG_E398

Version: 0.9c

Date: 17.06.2005

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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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