Sony Ericsson Z310 User manual

Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/125 B
Company Internal ©Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Applicable for Z310
Contents
1General ...............................................................................................................2
1.1 Service functions in the software...........................................................2
1.2 Misuse and other no warranty issues ....................................................3
2Appearance Problems.......................................................................................7
3Network/Signal Problems .................................................................................8
4On/Off Problems ................................................................................................9
5Audio Problems ...............................................................................................11
6Key/Flip Problems ...........................................................................................14
7Display Problems ............................................................................................16
8Illumination Problems .....................................................................................17
9Alert Problems .................................................................................................19
10 SIM Problems...................................................................................................21
11 Charging/Capacity Problems .........................................................................22
12 Camera Problems ............................................................................................24
13 Data Communication Problems .....................................................................25
14 Hands-Free Problems .....................................................................................27
15 Software Problems ..........................................................................................28
16 Revision History ..............................................................................................29

Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/125 B
Company Internal ©Sony Ericsson Mobile Communications AB
2(29)
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 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
Flash LED
Memory Stick
Real time clock
FM radio (You need a headset to test)
Total call time
NOTE: Different names may occur depending on language setting and customization.

Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/125 B
Company Internal ©Sony Ericsson Mobile Communications AB
3(29)
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 209 544/125 B
Company Internal ©Sony Ericsson Mobile Communications AB
4(29)
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 209 544/125 B
Company Internal ©Sony Ericsson Mobile Communications AB
5(29)
1.2.2 Liquid damage sticker
In the phone there are placed two stickers that can give you a hint to see if the phone is damage by liquid or not. These stickers are
located near the SIM reader, which is possible to see without disassemble the phone, and the LCM, Main and Sub LCD, which is
possible to see when the U-Cover.
Fig. 1.2.1

Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/125 B
Company Internal ©Sony Ericsson Mobile Communications AB
6(29)
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 209 544/125 B
Company Internal ©Sony Ericsson Mobile Communications AB
7(29)
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 all keys •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 for improper gap
between seams
•Reassemble or replace damaged
parts as necessary.

Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/125 B
Company Internal ©Sony Ericsson Mobile Communications AB
8(29)
3 Network/Signal Problems
Problem Area Items to Check Repair Action Reference Image
Before proceeding !Perform an update content refresh.
Visually inspect SIM Holder •If dirty or oxidized – Clean it.
•If damaged – Send it to electrical
repair location.
No Signal or Poor
Signal
Visually inspect antenna connectors •If damage – Send the unit to an
electrical repair location.

Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/125 B
Company Internal ©Sony Ericsson Mobile Communications AB
9(29)
4 On/Off Problems
Problem Area Items to Check Repair Action Reference Image
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 is detected, refer to the
“Display Problems”, chapter 7.
Before proceeding !•Perform an update content refresh.
Visually inspect the contact pads on
the Battery
•If dirty or oxidized – Clean them.
•If damaged – Replace the Battery.
Problem area
Visually inspect the Battery
Connector
•If dirty or oxidized – Clean it.
Note: Be careful not to damage the
Connector pins.
•If damaged – Send the unit to an
electrical repair location.

Trouble Shooting Guide, Mechanical
4/000 21-1/FEA 209 544/125 B
Company Internal ©Sony Ericsson Mobile Communications AB
10(29)
Problem Area Items to Check Repair Action Reference Image
Visually inspect the power key •If damaged – Replace the keypad.
Visually inspect the Dome Foil •If damaged – Replace it.
If the issue has not been resolved •Handle the unit according to local
directives.