Sony Ericsson Z550 Trouble shooting guide

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Trouble Shooting Guide, Mechanical
Trouble Shooting Guide, Mechanical
Contents
General ...............................................................................................................2
1
1.1 Service functions in the software...........................................................2
1.2 Misuse and other no warranty issues ....................................................3
2 Appearance Problems....................................................................................... 6
3 Network/Signal Problems .................................................................................7
4 On/Off Problems ................................................................................................9
5 Audio Problems ...............................................................................................11
6 Key/Flip Problems ...........................................................................................14
7 Display Problems ............................................................................................16
8 Illumination Problems .....................................................................................17
9 Alert Problems .................................................................................................18
10 SIM Problems...................................................................................................19
11 Charging/Capacity Problems .........................................................................20
12 Camera Problems ............................................................................................ 22
13 Data Communication Problems .....................................................................23
14 Noise from Hinge Area....................................................................................24
15 Software Problems ..........................................................................................25
16 Revision History ..............................................................................................26
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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 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 External display LED/illumination Keyboard Speaker Earphone Microphone Vibrator Camera Memory stick FM radio Real time clock Total call time
NOTE: Different names may occur depending on language setting and customization.
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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.
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LCD cracked due to
drop.
Clear scratches Mark after drop Corrosion components
on the PCB.
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Trouble Shooting Guide, Mechanical
Corrosion components on
Corrosion components on the
the PCB.
Components around system
connector 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.
PCB.
SIM reader damaged by
liquid.
System connector pad(s)
damaged by liquid
System connector damaged by
liquid
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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
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.
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Fig. 1.2.2 Fig. 1.2.3
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.
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Trouble Shooting Guide, Mechanical
2 Appearance Problems
Problem Area Items to Check Repair Action Reference Image
Appearance
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
Visually inspect for improper gap between seams
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
Reassemble or replace damaged parts as necessary.
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Trouble Shooting Guide, Mechanical
3 Network/Signal Problems
Problem Area Items to Check Repair Action Reference Image
No Signal or Poor Signal
Before proceeding ! Perform a flash upgrade.
Visually inspect SIM holder
Visually inspect antenna contacts
If dirty or oxidized – Clean it.
If damaged – Send to an electrical
repair location.
If dirty or oxidized – Clean it.
If damaged send to electrical repair
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Visually inspect antenna
If dirty, oxidized or damaged – Replace it
Note; if the side snap hooks are damaged on Speaker Box it can be re-used as it does not affect performance when phone is re­assembled.
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Problem Area Items to Check Repair Action Reference Image
If the issue has not been resolved !
Handle the unit according to local directives.
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Trouble Shooting Guide, Mechanical
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
Before proceeding !
Visually inspect contact pads on battery
Visually inspect battery connector
Visually inspect the power key
Perform a flash upgrade.
If dirty or oxidized – Clean pads.
If damaged – Replace the battery.
If dirty or oxidized – Clean it.
Note: Be gentle do not bend or damage the gold surface on connector pin’s
If damaged – Send to an electrical repair location.
If damaged – Replace keypad.
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Problem Area Items to Check Repair Action Reference Image
Visually inspect the dome array
If dirty, oxidized or damaged – Dome array.
If the issue has not been resolved !
Handle the unit according to local directives.
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Trouble Shooting Guide, Mechanical
5 Audio Problems
Problem Area Items to Check Repair Action Reference Image
Microphone:
Before proceeding !
Perform a flash upgrade and a setting reset.
Receiver:
No sound or poor quality sound
Visually inspect the microphone’s external port
If the issue has not been resolved !
Before proceeding !
Visually inspect receiver’s external port
Visually inspect receiver’s dust cloth
If clogged - Clean or replace Lower Inner Cover Assembly.
Handle the unit according to local directives.
Perform a flash upgrade and a setting reset.
If clogged – Clean or replace Front cover.
If dirty or damaged – Replace front cover.
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Problem Area Items to Check Repair Action Reference Image
If the issue has not been resolved !
If the issue has not been resolved !
Replace receiver.
Handle the unit according to local
directives.
Speaker:
No sound or poor quality sound
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Before proceeding !
Visually inspect speaker’s external port
Visually inspect the speaker’s dust cloth
Perform a flash upgrade and a setting reset.
If clogged – Clean it.
If dirty or damaged – Replace speaker
box.
Note; if the snap hooks are damaged on Speaker Box it can be re-used as it does not affect performance when phone is re­assembled.
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Trouble Shooting Guide, Mechanical
Problem Area Items to Check Repair Action Reference Image
If the issue has not been resolved !
Replace speaker box.
Note; if the side snap hooks are
damaged on Speaker Box it can be re-used as it does not affect performance when phone is re­assembled.
If the issue has not been resolved !
Handle the unit according to local directives.
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Trouble Shooting Guide, Mechanical
6 Key/Flip Problems
Problem Area
Keyboard:
A key on the keyboard is not functioning or is intermittent
Side keys
Items to Check
Visually inspect for debris between keypad and dome array and for damage to the keypad and the dome array.
If the issue has not been resolved !
If the issue has not been resolved !
Visually inspect for damage to the side keys
Repair Action
If dirty – Clean both parts.
If damaged – Replace keypad and/or
dome array as necessary.
Replace the dome array, if it has not already been replaced.
Handle the unit according to local directives.
If damaged – Replace them
Reference Image
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If the issue has not been resolved !
Handle the unit according to local directives.
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Trouble Shooting Guide, Mechanical
Problem Area
Items to Check
Flip problems Inspect when ever the phone open and
Repair Action
If any problem – Replace the hinge
close properly
Reference Image
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Trouble Shooting Guide, Mechanical
7 Display Problems
Problem Area
LCD module
Sub and main LCD and Touch screen for Z558
Items to Check
Check whether the phone vibrates 10 to 15 seconds after pressing the power key and whether the keypad illuminates
Before proceeding !
Visually inspect whether the main FPC is properly connected to its connector on the display
If the issue has not been resolved !
Repair Action
If activation of the vibrator are not detected, refer to the On/Off Problems
chapter 4
Perform a flash upgrade and a setting reset.
If improperly connected – Re-establish proper connection.
Replace the LCD or Touch Screen on Z558
Reference Image
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Trouble Shooting Guide, Mechanical
8 Illumination Problems
Problem Area
LCD module
Sub and main LCD
Items to Check
Before proceeding !
Visually inspect whether the main FPC is properly connected to its connector on the display
If issue has not been resolved !
If the issue has not been resolved !
Repair Action
Perform a flash upgrade and a setting reset.
If improperly connected – Re-establish proper connection.
Replace the LCD.
Handle the unit according to local
directives.
Reference Image
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Trouble Shooting Guide, Mechanical
9 Alert Problems
Problem Area
Vibrator:
Speaker: Refer to “Speaker” section under “Audio Problems”
Items to Check
Before proceeding !
Visually inspect the vibrator pads on the main FPC
Visually inspect the vibrator
Repair Action
Perform a flash upgrade and a setting reset.
If dirty, oxidized or damaged – Replace main FPC.
If dirty, oxidized or damaged – Replace it.
Reference Image
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Trouble Shooting Guide, Mechanical
10 SIM Problems
Problem Area
SIM undetected (Insert SIM)
Unit indicates an incorrect SIM is inserted (Insert correct SIM)
Items to Check
Inspect SIM holder
If the issue has not been resolved !
Check whether the phone is locked to a particular carrier and whether the correct carrier’s SIM is being used
If the issue has not been resolved !
Repair Action
If dirty or oxidized – Clean.
If damaged – Send to an electrical
repair location.
Handle the unit according to local directives.
Use Correct Carrier SIM or test SIM.
Handle the unit according to local
directives.
Reference Image
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Trouble Shooting Guide, Mechanical
11 Charging/Capacity Problems
Problem Area
Battery will not charge
Items to Check
Visually inspect the contact pads of the battery
Visually inspect the system connector
Visually inspect the battery connector
Repair Action
If dirty or oxidized – Clean.
If damaged – Replace battery.
If dirty, oxidized or damaged – Clean
or replace.
NOTE: Misuse is not covered by warranty. Refer to chapter 1.2
If dirty or oxidized – Clean.
If damaged – Send to an electrical
repair location.
Reference Image
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Trouble Shooting Guide, Mechanical
Battery looses charge quickly/ standby time seems short
Before proceeding !
NOTE: Some features noticeably reduce the amount of standby time if they are turned on. Some examples
Perform a flash upgrade and a setting reset.
are the back light (when on all the time and), Bluetooth and infrared.
If the issue has not been resolved !
If the issue has not been resolved !
Replace battery.
Handle the unit according to local
directives.
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Trouble Shooting Guide, Mechanical
12 Camera Problems
Problem Area Items to Check Repair Action Reference Image
Camera
Visually inspect the camera lens
If scratched or damaged – Replace the camera
Visually inspect whether the camera is properly connected to its socket on the main FPC.
If the issue has not been resolved !
If improperly connected – Re-establish proper connection.
Replace the camera and main FPC.
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Trouble Shooting Guide, Mechanical
13 Data Communication Problems
Problem Area Items to Check Repair Action Reference Image
Will not connect with a functional bluetooth device
Before proceeding ! Perform a flash upgrade.
Visually inspect bluetooth antenna
If dirty or damaged – replace .
Note; if the snap hooks are
damaged on Speaker Box it can be re-used as it does not affect performance when phone is re­assembled.
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If the issue has not been resolved !
Handle the unit according to local directives.
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Trouble Shooting Guide, Mechanical
14 Noise from Hinge Area
Problem Area Items to Check Repair Action Reference Image
Squeaking or noise from hinge area
Visually inspect Hinge Area
If dirty or damaged – replace.
Replace Lower Inner Cover Assembly
Only with latest revision
Note; if the snap hooks are damaged on Speaker Box it can be re-used as it does not affect performance when phone is re­assembled.
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If the issue has not been resolved !
Handle the unit according to local directives.
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Trouble Shooting Guide, Mechanical
15 Software Problems
If there are problems with the response of the keypad commands, or spelling errors in the menu, if they are not related to mechanical damage, make a master reset and flash the phone with the latest software from EMMA II or III.
Checking the software revision can be done in the Service info, see chapter Service functions in the software. Choose: Service info / SW information. The Software revision and date will be shown in the display.
Note: Do a SW upgrade before sending the unit to a higher level. Do not
If the failure still occurs, handle the unit according to the local directives.
scrap a phone that hasn’t been upgraded.
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Trouble Shooting Guide, Mechanical
16 Revision History
Rev. Date Changes / Comments
A 2006-07-03 First release
B 2006-09-28 Z550a Released
C 2006-10-12 Z558 Released
D 2006-10-17 Hinge Noise Added
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