Trouble_shooting_guide.pdf

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Trouble Shooting Guide, Mechanical
Trouble Shooting Guide, Mechanical
Applicable for P990
Contents
1
General ...............................................................................................................2
1.1
Service functions in the software ...........................................................2
1.2
Misuse and other no warranty issues ....................................................3
Appearance Problems.......................................................................................6
Network/Signal Problems .................................................................................7
On/Off Problems ................................................................................................9
Audio Problems ...............................................................................................11
Key Problems...................................................................................................14
Display Problems ............................................................................................16
Illumination Problems .....................................................................................17
Alert Problems .................................................................................................19
SIM Problems...................................................................................................20
Charging/Capacity Problems .........................................................................21
Data Communication Problems .....................................................................23
Camera Problems ............................................................................................24
Software Problems ..........................................................................................29
Revision History ..............................................................................................30
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4/000 21-1/FEA 209 544/97 A
Company Internal
©
Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
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
The service menu will be accessed with the following key combination. Use the jog dial and keyboard.
▲*▼▼*▼*
if no flip is attached use X instead of *
They are as follows:
Service information
Service tests
Format internal disk
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:
Display
Camera
Touch screen
Illumination
LED’s
Keyboard
Vibrator
Speaker’s
Microphone
FM-radio
Memory stick
NOTE: Different names may occur depending on language setting and customization.
4/000 21-1/FEA 209 544/97 A
Company Internal
©
Sony Ericsson Mobile Communications AB
2(30)
Trouble Shooting Guide, Mechanical
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.
4/000 21-1/FEA 209 544/97 A
Company Internal
©
Sony Ericsson Mobile Communications AB
3(30)
Trouble Shooting Guide, Mechanical
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.
4/000 21-1/FEA 209 544/97 A
Company Internal
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Sony Ericsson Mobile Communications AB
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Trouble Shooting Guide, Mechanical
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. 1.2.3
Fig. 1.2.4
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.
4/000 21-1/FEA 209 544/97 A
Company Internal
©
Sony Ericsson Mobile Communications AB
5(30)

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