Sony Ericsson K320i Bedienungsanleitung
Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/124 B
Company Internal ©Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Applicable for K320
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...................................................................................................17
7Display Problems ............................................................................................20
8Illumination Problems .....................................................................................21
9Alert Problems .................................................................................................23
10 SIM Problems...................................................................................................25
11 Charging/Capacity Problems .........................................................................26
12 Camera Problems ............................................................................................28
13 Data Communication Problems .....................................................................29
14 Software Problems ..........................................................................................30
15 Revision History ..............................................................................................31
Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/124 B
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 joystick.
⇒*⇐⇐*⇐*
They are as follows:
Service info
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
Real time clock
Total call time
NOTE: Different names may occur depending on language setting and customization.
Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/124 B
Company Internal ©Sony Ericsson Mobile Communications AB
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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.
Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/124 B
Company Internal ©Sony Ericsson Mobile Communications AB
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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.
Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/124 B
Company Internal ©Sony Ericsson Mobile Communications AB
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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
Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/124 B
Company Internal ©Sony Ericsson Mobile Communications AB
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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
Appearance
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
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Company Internal ©Sony Ericsson Mobile Communications AB
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Problem Area Items to Check Repair Action Reference Image
Visually inspect for improper gap
between seams
•Reassemble or replace damaged parts
as necessary.
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3Network/Signal Problems
Problem Area Items to Check Repair Action Reference Image
Before proceeding !Perform a flash upgrade.
Visually inspect SIM holder •If dirty or oxidized – Clean it.
•If damaged – Send to an electrical
repair location.
No Signal or Poor
Signal
Visually inspect antenna contact pads •If dirty or oxidized – Clean the pads
and replace the frame (B cover).
Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/124 B
Company Internal ©Sony Ericsson Mobile Communications AB
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Problem Area Items to Check Repair Action Reference Image
Visually inspect antenna •If dirty or oxidized – Replace the frame
(B cover).
•If damaged – Replace the frame (B
cover).
If the issue has not been resolved !•Handle the unit according to local
directives.
Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/124 B
Company Internal ©Sony Ericsson Mobile Communications AB
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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: Be gently it might damage the
connector.
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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