Sony Ericsson W880I, W888C Trouble Shooting Guide

Trouble Shooting Guide Repair Instruction Mechanical/4/000 21-1/FEA 209 544/123, Mechanical

Trouble Shooting Guide, Mechanical

Applicable for W880i, W888c

Contents

General .................................................................................................................................2

Service functions in the software...................................................................................3

Misuse and other no warranty issues............................................................................4

2 Power Problems....................................................................................................................6

3 Network/Signal Problems......................................................................................................8

4 Audio Problems.....................................................................................................................9

Receiver:........................................................................................................................9

Rear Speaker:..............................................................................................................11

Microphone:.................................................................................................................13

5 Key Problems......................................................................................................................14

Keypad:........................................................................................................................14

Volume key:.................................................................................................................15

Camera key .................................................................................................................16

Music Key....................................................................................................................16

6 Display Problems................................................................................................................18

7 Illumination Problems..........................................................................................................20

Keypad Illumination: The entire keypad will not illuminate .........................................20

Keypad Illumination: A portion of the keypad does not illuminate .............................20

Display Illumination:.....................................................................................................21

8 Alert Problems.....................................................................................................................22

Vibrator:.......................................................................................................................22

Rear speaker:..............................................................................................................22

9 Charging/Capacity Problems ..............................................................................................24

10 SIM Problems......................................................................................................................25

11 Data Transfer Problems using a Data Cable ......................................................................26

12 Hands-Free Problems.........................................................................................................26

13 Rear Camera Problems ......................................................................................................27

14 Video Call Camera Problems (W880 Only).........................................................................29

15 Bluetooth Problems.............................................................................................................31

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1 General

This document outlines the mechanical repairs that should be made in an attempt to fix the common failures that are seen in the field. To gain a complete understanding of how to test and repair a unit, this document should be used in conjunction with the Test Instructions, Mechanical and the Working Instructions, Mechanical.

NOTE! A unit should always be inspected for liquid damage and flashed with latest software before using the

Mechanical Trouble Shooting Guide. Refer to the Mechanical Test Instructions for details regarding upgrading software.

NOTE! If all of the repair actions listed in this document for addressing a problem have been performed and a unit still

is not working, handle the unit according to your local Sony Ericsson Representative

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Trouble Shooting Guide Repair Instruction Mechanical/4/000 21-1/FEA 209 544/123, Mechanical

• Service functions in the software

The service menu will be accessed with the following key combination. Use the joystick.

⇒*⇐⇐*⇐*

The service menu options are:

Service info Service tests Text labels

Under the “Service tests” option, the phone’s software has a built in service functionality that allows you to test some of the phones functions. It looks like this:

Main display LED/illumination Keyboard Speaker Earphone Microphone Vibrator Camera Video Call Camera Memory Stick Real time clock Total call time Security

NOTE: Different names may occur depending on language setting and customization.

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Trouble Shooting Guide Repair Instruction Mechanical/4/000 21-1/FEA 209 544/123, Mechanical

• Misuse and other no warranty issues

A phone that is damaged due to misuse is not covered by warranty. This section shows many of the signs of misuse that are seen in the field. Please refer to local directives on how a phone that appears to be damaged due to misuse should be handled.

Below are some examples of damage due to misuse that are not covered by warranty.

Front window broken due to

misuse.

LCD cracked due to drop. Clear scratches Mark after drop

Corrosion components on the PCB. Corrosion components on the PCB. Components damaged by liquid System connector damaged by liquid

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Trouble Shooting Guide Repair Instru

ction Mechanical/4/000 21-1/FEA 209 544/123, Mechanical

1.1.1 Liquid Damage Inspection

Before any tests are performed, an inspection of the liquid intrusion indicator should be made. If the liquid intrusion indicator is red this is an indication of possible liquid exposure. If the liquid intrusion indicator suggests liquid exposure please consult your local SEMC representative for handling instructions.

Location of the liquid intrusion indicator

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The following pictures show the different between an indicator that has been in contact with liquid and one that has not.

Not Exposed to Liquid Exposed to Liquid

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Trouble Shooting Guide Repair Instruction Mechanical/4/000 21-1/FEA 209 544/ 123, Mechanical

2 Power Problems

Problem Area

Unit will not Power On or switch off spontaneous

Items to Inspect

Check whether the phone vibrates when you press the power key

Inspect battery connector

Repair Action

If activation of the vibrator is detected, refer to the “Display Problems” section

• If dirty or oxidized – Clean the connector’s contact pins

• If adhesive is detected on the contact pins – use an eraser to rub off the adhesive

• If damaged – Send to a repair location allowed to perform electrical repairs on this product

• Attach a Sheet(Battery) into the battery cavity, according to the chapter 3.2.3 in the Working Instructions Mechanical.

Inspection Reference

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• Clean the battery contacts surface

with alcohol (isopropyl)

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Problem Area

Items to Inspect

Inspect the area between the power key portion of the keypad and the

Repair Action

• If the keypad is damaged, replace it

• Replace the dome foil assembly

Inspection Reference

dome foil assembly

Inspect the area between

• Scrap

components L3103 and N2000 for burned components or PCB

If the issue is still not resolvedÆ

• Send to a repair location allowed to perform electrical repairs on this product

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3 Network/Signal Problems

Problem Area

No Signal or Poor Signal

Items to Inspect

Before proceeding Æ

Inspect antenna-to-board spring connectors

If the issue has not been resolved Æ

If the issue is still not resolvedÆ

Repair Action Inspection Reference

• Ensure the correct SIM (GSM) or USIM (UMTS) is installed. See Test Instruction for details.

• If dirty or oxidized – Clean the antenna-to-board spring connectors

• If damaged – Send to a repair location allowed to perform electrical repairs on this product

• Replace the antenna

• Send to a repair location allowed to

perform electrical repairs on this product

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4 Audio Problems

Problem Area

Receiver:

No sound or poor quality sound

Items to Inspect

Before proceeding Æ Inspect the receiver’s external ports

Inspect the receiver’s dust cloth

Repair Action

• Perform a setting reset

• If clogged – Clean the ports and

receiver’s dust cloth

• If dirty – Clean

• If damaged – Replace the camera flex

assembly

Inspection Reference

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Trouble Shooting Guide Repair Instruction Mechanical/4/000 21-1/FEA 209 544/123, Mechanical

Problem Area Repair Action

Items to Inspect Inspection Reference

Inspect the two connections where the camera flex assembly connects to the circuit board

• If either connection is improperly connected – Reestablish proper connection

• If one or both of the connections is dirty or oxidized – Clean both halves of the connection(s)

• If any portion on the camera assembly flex film is damaged – replace the camera flex assembly

• If either of the camera flex assembly connections on the circuit board is damaged – Send to a repair location allowed to perform electrical repairs on this product

If the issue has not been resolved Æ

• Replace the camera assembly, if it has not been replaced

If the issue is still not resolved Æ

• Send to a repair location allowed to perform electrical repairs on this product

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