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

1

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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16 Revision History..................................................................................................................32

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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• 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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• 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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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

State: Released 5 Company Internal

• 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

State: Released 5 Company Internal

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

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

State: Released 5 Company Internal

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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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Problem Area Repair Action

Items to Inspect Inspection Reference

Rear Speaker:

No sound or poor quality sound

Before proceeding Æ Inspect whether the rear speaker’s

external port is clogged

• Perform a setting reset

• If clogged – Clean the port and rear

speaker cloth

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Problem Area Repair Action

Items to Inspect Inspection Reference

Inspect the rear speaker cloth

• If dirty – Clean

• If damaged – Replace the camera flex

assembly

Inspect the two camera flex assembly connections to the circuit board

If the issue has not been resolved Æ

• 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

• Replace camera flex assembly if it has not already been replaced

If the issue is still not resolvedÆ

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

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Problem Area Repair Action

Items to Inspect Inspection Reference

Microphone:

Before proceeding Æ Inspect the microphone’s external

port

Inspect the microphone

If the issue is still not resolvedÆ

• Perform a setting reset

• If clogged – Remove the co-brand

label and clean the microphone’s port hole

• If dirty – Clean the microphone

• If damaged – Send to a repair location

allowed to perform electrical repairs on this product

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

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5 Key Problems

Problem Area

Keypad:

A key on the keypad is not functioning or is intermittent

Entire keypad or a portion of the keypad is not functioning or is intermittent

Items to Inspect

Inspect the area between the keypad and the dome foil assembly where the key is not functioning

If the issue is not resolvedÆ If the issue is still not resolvedÆ

Inspect the dome foil assembly to circuit board connection

Repair Action

• If the keypad is damaged, replace it

• Replace the dome foil assembly

• Send to a repair location allowed to

perform electrical repairs on this product

• If the connector is improperly connected – Reestablish proper connection

• If the connection is dirty – Clean both halves of that connection

• If dome foil assembly’s half of the connection is damaged – replace the dome foil assembly

• If the half of the connection on the circuit board is damaged – Send to a repair location allowed to perform electrical repairs on this product

Inspection Reference

State: Released 5 Company Internal

If the issue is not resolvedÆ

• Replace the dome foil assembly

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Problem Area Repair Action

Items to Inspect Inspection Reference

If the issue is still not resolvedÆ

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

Volume key:

Inspect the volume key

Inspect the volume switch on the camera flex assembly

If the issue has not been resolved Æ

• If dirty or damaged, replace the volume key

• If damaged, replace the camera flex assembly

• Replace camera flex assembly if it has not already been replaced

If the issue is still not resolvedÆ

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

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Problem Area Repair Action

Items to Inspect Inspection Reference

Camera key

Music Key

Inspect the area between the camera key and the dome foil assembly

If the issue is not resolvedÆ

If the issue is still not resolvedÆ

Inspect the Music key

• If the camera key is damaged, replace it

• If the camera key portion of the dome foil assembly is damaged, replace the dome foil assembly

• Replace the dome foil assembly, if it has not already been replaced

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

• If dirty or damaged, replace the Music key

Inspect the Music key’s dome foil on the camera flex assembly

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• If damaged, replace the camera flex

assembly

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Problem Area Repair Action

Items to Inspect Inspection Reference

If the issue has not been resolved Æ

• Replace camera flex assembly if it has not already been replaced

If the issue is still not resolvedÆ

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

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6 Display Problems

Problem Area

If display is not functioning

Items to Inspect

Check whether the phone vibrates when you press the power key

Inspect the display flex film’s connection to the circuit board

If the issue has not been resolved Æ

Repair Action

• If activation of the vibrator is not detected, refer to the “Power

Problems” section

• If improperly connected – establish proper connection

• If dirty or oxidized – Clean both halves of the connection

• If the display’s portion of the connection is damaged – replace the display assembly

• If the portion of the connection on the circuit board is damaged – Send to a repair location allowed to perform electrical repairs on this product

• Replace the display assembly if it has not been replaced

Inspection Reference

Display is not Illuminating properly

State: Released 5 Company Internal

If the issue is still not resolved Æ

Refer to the “Illumination Problems” section of this document

• Send to a repair location allowed to

perform electrical repairs on this product

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7 Illumination Problems

Problem Area

Keypad Illumination: The entire keypad will not illuminate

Items to Inspect

Before proceeding Æ Inspect both halves of the dome foil

assembly to circuit board connection

If the issue has not been resolved Æ

Repair Action

• Perform a setting reset

• If dirty or oxidized – Clean both

halves of the connection

• If the portion of the connection on the dome foil assembly is damaged – Replace the dome foil assembly

• If the portion of the connection on the circuit board is damaged – Send to a repair location allowed to perform electrical repairs on this product

• Replace the dome foil assembly, if it has not been replaced

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

Inspection Reference

Keypad Illumination: A portion of the keypad does not illuminate

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Perform the following action Æ

• Replace the dome foil assembly

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Problem Area Repair Action

Items to Inspect Inspection Reference

If the issue has not been resolved Æ

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

Display Illumination:

Before proceeding Æ Inspect the display flex film’s

connection to the circuit board

If the issue has not been resolved Æ

• Perform a setting reset

• If improperly connected – establish

proper connection

• If dirty or oxidized – Clean both halves of the connection

• If the display’s portion of the connection is damaged – replace the display assembly

• If the portion of the connection on the circuit board is damaged – Send to a repair location allowed to perform electrical repairs on this product

• Replace the display 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

State: Released 5 21(32) Company Internal

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

8 Alert Problems

Problem Area

Vibrator:

Rear speaker:

No sound or poor quality sound

Items to Inspect

Before proceeding Æ If the issue is not resolved Æ

Before proceeding Æ Inspect whether the rear speaker’s

external port is clogged

Repair Action

• Perform a setting reset

• Send to a repair location allowed to

perform electrical repairs on this product

• Perform a setting reset

• If clogged – Clean the port and rear

speaker cloth

Inspection Reference

State: Released 5 Company Internal

Inspect the rear speaker cloth

• If dirty – Clean

• If damaged – Replace the camera

flex assembly

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Problem Area Repair Action

Items to Inspect Inspection Reference

Inspect the two camera flex assembly connections 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 camera flex assembly if it has not already been replaced

If the issue is still not resolvedÆ

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

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9 Charging/Capacity Problems

Problem Area

Phone is not charging properly

Items to Inspect

Inspect the battery connector

Inspect the system connector

If the issue has not been resolved Æ

• 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

• If dirty or oxidized – Clean the connector’s contacts

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

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

Repair Action

Inspection Reference

State: Released 5 Company Internal

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10 SIM Problems

Problem Area

SIM undetected

Items to Inspect

Inspect camera flex assembly to SIM flex connection

If the issue has not been resolved Æ

If the issue is still not resolved Æ

Repair Action

• If the connector is improperly connected – Reestablish proper connection

• If the connection is dirty – Clean both halves of that connection

• If SIM flex half of the connection is damaged – replace the SIM Flex

• If Camera flex half of the connection is damaged – replace the Camera Flex Assembly

• Replace the SIM Flex, if it has not been replaced

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

Inspection Reference

Unit indicates the incorrect SIM is inserted

State: Released 5 Company Internal

Before proceeding Æ

Check whether the phone is locked to a particular carrier and whether the correct carrier’s SIM is being used

• Ensure the correct SIM (GSM) or

USIM (UMTS) is installed. See Test Instruction for details.

• Use Correct Carrier SIM or test SIM

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11 Data Transfer Problems using a Data Cable

Problem Area

Problem transferring data using a direct connection

Items to Inspect

Inspect the system connector

If the issue has not been resolved Æ

12 Hands-Free Problems

Problem Area

Hands-free not working

Items to Inspect

Inspect the system connector

Repair Action

• If dirty or oxidized – Clean the connector’s contacts

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

Repair Action

• If dirty or oxidized – Clean the connector’s contacts

Inspection Reference

State: Released 5 Company Internal

If the issue has not been resolved Æ

• Send to a repair location allowed to

perform electrical repairs on this product

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13 Rear Camera Problems

Problem Area

Lines or marks in picture

Items to Inspect

Visually inspect the rear camera window

If the issue has not been resolved Æ

If the issue is still not resolved Æ

• If dirty – Clean the rear camera window

• If scratched or damaged – Replace the rear camera window

• Replace the camera flex assembly

• Send to a repair location allowed to

perform electrical repairs on this product

Repair Action

Inspection Reference

State: Released 5 Company Internal

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Problem Area Repair Action

Will not capture an image

Items to Inspect Inspection Reference

To determine whether or not the problem is with the camera key, try capturing an image by pressing the navigation key

• If pressing the navigation key does take a picture – Perform the steps

listed in the camera key portion of the “Key Problems” section

• If pressing the navigation key does not take a picture– Perform the

remaining inspect/repair procedures in this section.

Inspect the two camera flex assembly connections 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 camera flex assembly if it has not already been replaced

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Problem Area Repair Action

Items to Inspect Inspection Reference

If the issue is still not resolvedÆ

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

14 Video Call Camera Problems (W880 Only)

Problem Area

Lines or marks in picture

Items to Inspect

Visually inspect the front camera’s window

If the issue has not been resolved Æ

Repair Action

• If dirty – Clean the front camera’s window

• If scratched or damaged – Replace the front cover

• Replace camera flex assembly

Inspection Reference

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Problem Area Repair Action

Items to Inspect Inspection Reference

If the issue is still not resolvedÆ

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

Do not see image when in video call mode

Inspect the two camera flex assembly connections 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 camera flex assembly if it has not already been replaced

If the issue is still not resolvedÆ

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

State: Released 5 30(32) Company Internal

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15 Bluetooth Problems

Problem Area

Will not connect with a functional Bluetooth device

Items to Inspect

Inspect Bluetooth antenna-to-board spring connectors

If the issue has not been resolved Æ

If the issue is still not resolvedÆ

Repair Action

• If dirty or oxidized – Clean the Bluetooth 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

Inspection Reference

State: Released 5 Company Internal

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16 Revision History

Rev. Date Changes / Comments

1 Feb. 8, 2007 Initial Release 2 2007-04-12 W888 added 3 2007-10-01 Power Problems updated 4 2007-10-11 Burnd components or PCB added 5 2008-01-23 Chapter 2 Power Problems updated

Trouble Shooting Guide Repair

123, Mechanical

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Sony Ericsson W880I, W888C Trouble Shooting Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

1 General

1.1.1 Liquid Damage Inspection

2 Power Problems

3 Network/Signal Problems

4 Audio Problems

Receiver:

Rear Speaker:

Microphone:

5 Key Problems

Keypad:

Volume key:

Camera key

Music Key

6 Display Problems

7 Illumination Problems

Keypad Illumination: The entire keypad will not illuminate

Keypad Illumination: A portion of the keypad does not illuminate

Display Illumination:

8 Alert Problems

Vibrator:

Rear speaker:

9 Charging/Capacity Problems

10 SIM Problems

11 Data Transfer Problems using a Data Cable

12 Hands-Free Problems

13 Rear Camera Problems

14 Video Call Camera Problems (W880 Only)

15 Bluetooth Problems

16 Revision History