Sony Ericsson J100a Manual de usuario

Trouble Shooting Guide, Mechanical

4/000 21-1/FEA 209 544/114 A

Company Internal

Sony Ericsson Mobile Communications AB Approved according to 1/109 41-4/FCP 119 00 30

Trouble Shooting Guide, Mechanical

Applicable for J100a, J100c and J100i

Contents

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

1.1

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

1.2

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

Appearance Problems.......................................................................................7

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

On/Off Problems................................................................................................9

Audio Problems...............................................................................................10

Key Problems...................................................................................................13

Alert Problems.................................................................................................14

SIM Problems...................................................................................................15

Charging/Capacity Problems .........................................................................16

Revision History..............................................................................................17

Trouble Shooting Guide, Mechanical

4/000 21-1/FEA 209 544/114 A

Company Internal

Sony Ericsson Mobile Communications AB 2(17)

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 specific failure, this document should be used in conjunction

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

1.1 Service functions in the software

There are two different service menus.

#82#; Here you will find information about software and hardware versions.

#890#; Here you will find the test menu.

The test menu will looks like this:

Keypad

Vibrator

LCM ; Display test

Buzzer ; Ring signal test

Voice loop back ; Microphone and speaker test

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

Trouble Shooting Guide, Mechanical

4/000 21-1/FEA 209 544/114 A

Company Internal

Sony Ericsson Mobile Communications AB 3(17)

1.2 Misuse 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.

Trouble Shooting Guide, Mechanical

4/000 21-1/FEA 209 544/114 A

Company Internal

Sony Ericsson Mobile Communications AB 4(17)

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

Trouble Shooting Guide, Mechanical

4/000 21-1/FEA 209 544/114 A

Company Internal

Sony Ericsson Mobile Communications AB 5(17)

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.

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).

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

Trouble Shooting Guide, Mechanical

4/000 21-1/FEA 209 544/114 A

Company Internal

Sony Ericsson Mobile Communications AB 6(17)

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.

Trouble Shooting Guide, Mechanical

4/000 21-1/FEA 209 544/114 A

Company Internal

Sony Ericsson Mobile Communications AB 7(17)

2 Appearance 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 keypad •If dirty – Clean keypad.

•If unacceptably scratched or damaged

– Replace keypad.

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.

Trouble Shooting Guide, Mechanical

4/000 21-1/FEA 209 544/114 A

Company Internal

Sony Ericsson Mobile Communications AB 8(17)

3 Network/Signal Problems

Problem Area Items to Check Repair Action Reference Image

Visually inspect antenna contact pads •If dirty or oxidized – Clean the pads

and replace the antenna assembly.

Visually inspect antenna •If dirty or oxidized – Replace it.

•If damaged – Replace it.

No Signal or Poor

signal.

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

directives.

Trouble Shooting Guide, Mechanical

4/000 21-1/FEA 209 544/114 A

Company Internal

Sony Ericsson Mobile Communications AB 9(17)

4 On/Off Problems

Problem Area Items to Check Repair Action Reference Image

Power On

problems Check whether the phone vibrates 10 to

15 seconds after pressing the power

key and whether the keypad illuminates

•If activation of the vibrator or keypad

are detected, refer to the “Display

Problems” chapter 7

Visually inspect contact pads on battery •If dirty or oxidized – Clean pads.

•If damaged – Replace the battery.

Visually inspect the power key •If damaged – Replace the Dome Foil.

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

directives.

Trouble Shooting Guide, Mechanical

4/000 21-1/FEA 209 544/114 A

Company Internal

Sony Ericsson Mobile Communications AB 10(17)

5 Audio Problems

Problem Area Items to Check Repair Action Reference Image

Visually inspect the microphone’s

external port •If clogged - Clean or replace Rear

cover.

If the issue has not been resolved !•Replace microphone

Microphone:

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

directives.

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