Sony Ericsson W850 Manual de usuario

Trouble Shooting Guide, Mechanical

4/000 21-1/FEA 209 544/104 A

Company Internal ©Sony Ericsson Mobile Communications AB

Trouble Shooting Guide, Mechanical

Applicable for W850

Contents

1General ...............................................................................................................2

1.1 Service functions in the software...........................................................2

1.2 Misuse and other no warranty issues ....................................................3

2Appearance Problems.......................................................................................6

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

4On/Off Problems ..............................................................................................11

5Audio Problems ...............................................................................................13

6Key Problems...................................................................................................18

7Slider Problems ...............................................................................................24

8Display Problems ............................................................................................25

9Illumination Problems .....................................................................................29

10 Alert Problems .................................................................................................30

11 SIM Problems...................................................................................................31

12 Charging/Capacity Problems .........................................................................32

13 Camera Problems ............................................................................................34

14 Data Communication Problems .....................................................................40

15 Software Problems ..........................................................................................41

16 Revision History ..............................................................................................42

Trouble Shooting Guide, Mechanical

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Company Internal ©Sony Ericsson Mobile Communications AB

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1General

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 specific failure, this document should be used in conjunction

with the Test Instructions, Mechanical and the Working Instructions, Mechanical.

1.1Service functions in the software

The service menu will be accessed with the following key combination. Use the navigation keys ⇒*⇐⇐*⇐*

They are as follows:

Service info

Service settings

Service tests

Text labels

The phones software has a built in service functionality that allows you to test some of the phones functions. (See point 2 above) It

looks like this:

Main display

LED/illumination

Keyboard

Speaker

Earphone

Microphone

Vibrator

Camera

Flash LED

Video call camera

Memory Stick

FM Radio

Real time clock

Total call time

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

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1.2Misuse and other no warranty issues

Misuse is not covered by warranty. This chapter will explain what’s not covered by warranty. Phones that have been exposed to

misuse will not be covered by warranty.

This means: if it is possible to repair the phone, the customer will have to pay for the repair. SEMC will not allow any of these

phones to be claimed into WCMS. Some local perspectives may interfere with this. Please reference to local directives.

1.2.1 Action

Make a general visual inspection for misuse.

Below are some examples of what is 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.

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Corrosion components on

the PCB.

Corrosion components on the

PCB.

SIM reader damaged by

liquid.

System connector damaged by

liquid

Components around system

connector damaged by liquid

System connector pad(s)

damaged by liquid

1.2.2 Liquid damage sticker

In the phone there is placed a sticker that can give you a hint to see if the phone is damage by liquid or not. This sticker is located

near the SIM reader (Fig. 1.2.1) and it is possible to see it without disassemble the phone.

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Fig. 1.2.1

On the pictures below you will see the different between a sticker that has been in contact with liquid (Fig. 1.2.3) and with one that

hasn’t (Fig. 1.2.2).

1.2.3 Action

Make a general visual inspection for misuse, corrosion or oxidation from liquid damage. No further action should be taken for a liquid

damaged phone. Handle the unit according to local directives.

This sticker is ok This sticker is not ok

The white sticker that has been in contact with

liquid turns into a red or pink sticker. In this

case you should check the phone for liquid

damage

(See point 1.1.1)

Note: There must be clear marks after liquid on

the PCB before rejecting the phone for repair.

Fig. 1.2.2 Fig. 1.2.3

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2Appearance Problems

Problem Area Items to Check Repair Action Reference Image

Visually inspect the cosmetic quality of

all user viewable surfaces

•If dirty – Clean parts as necessary.

•If unacceptably scratched or damaged

– Replace damage parts as necessary.

NOTE: Misuse is not covered by

warranty. Refer to chapter 1.2

Visually inspect all keys •If dirty – Clean parts as necessary.

•If unacceptably scratched or damaged

– Replace damaged parts as

necessary.

NOTE: Misuse is not covered by

warranty. Refer to chapter 1.2

Appearance

Visually inspect for improper gap

between seams

•Reassemble or replace damaged parts

as necessary.

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Problem Area Items to Check Repair Action Reference Image

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3Network/Signal Problems

Problem Area Items to Check Repair Action Reference Image

Before proceeding !•Do software update content refresh.

Note: this problem will not be solved be

a regular software update.

Note: Software Update Content Refresh

will erase all user data.

Visually inspect SIM holder •If dirty or oxidized – Clean it

•If damaged – Send to electrical repair.

No Signal or Poor

Signal

Visually inspect antenna contact pads

and the antenna connector.

•If dirty or oxidized – Clean the pads

and replace the antenna assembly.

Note: Do not bend the antenna

connector.

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Problem Area Items to Check Repair Action Reference Image

Visually inspect antenna •If dirty, oxidized or damaged – Replace

it.

If the issue has not been resolved !•Handle the unit according to local

directives.

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Problem Area Items to Check Repair Action Reference Image

Connect the phone to a handsfree car

kit connected with external antenna.

Visually inspect the antenna bar on the

phone.

•If no or only very less signal – Push

the middle pin of the ext. antenna

connector a few times

Note: Take care not to scratch the gold

surface.

No signal when

using external

antenna (ex. Hands

free in car).

If the issue has not been resolved !•Handle the unit according to local

directives.

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