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Trouble Shooting Guide, Mechanical
Trouble Shooting Guide, Mechanical
Applicable for Z550i, Z550c, Z550a, Z558i & Z558c
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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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.
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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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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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Trouble Shooting Guide , Mechanical
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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Trouble Shooting Guide , Mechanical
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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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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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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