Sony Ericsson K660i User manual

Trouble Shooting Guide, Mechanical
1208-5075 Rev 1
Trouble Shooting Guide, Mechanical
Applicable for K660i
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..............................................................................................11
5Audio Problems...............................................................................................13
6Key Problems...................................................................................................17
7Display Problems ............................................................................................19
8Illumination Problems.....................................................................................20
9Alert Problems.................................................................................................22
10 SIM Problems...................................................................................................23
11 FM Radio Problems.........................................................................................24
12 M2 Memory Problems .....................................................................................25
13 Charging/Capacity Problems .........................................................................26
14 Camera Problems............................................................................................28
15 Data Communication Problems .....................................................................34
16 Software Problems..........................................................................................35
17 Revision History ..............................................................................................36
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Trouble Shooting Guide, Mechanical
1208-5075 Rev 1 2(36)
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.
1.1 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
Memory Stick
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
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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. LCD cracked due to drop. Clear scratches Mark after drop Corrosion components on the PCB.
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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
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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.
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).
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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
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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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
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
Appearance
Visually inspect for improper gap
between seams •Reassemble or replace damaged parts
as necessary.
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Trouble Shooting Guide, Mechanical
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3Network/Signal Problems
Problem Area Items to Check Repair Action Reference Image
Before proceeding ÆPerform a flash upgrade.
Visually inspect SIM Card Reader. •If dirty or oxidized – Clean it.
•If damaged – Send to an electrical
repair location.
No Signal or Poor
Signal
Visually inspect antenna contact pins. •If dirty or oxidized – Clean the pins and
replace the antenna assembly.
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Problem Area Items to Check Repair Action Reference Image
Visually inspect antenna •If dirty, oxidized or damaged – Replace
it.
If the issue has not been resolved Æ•Handle the unit according to local
directives.
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Trouble Shooting Guide, Mechanical
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Problem Area Items to Check Repair Action Reference Image
Connect the phone to hands free 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.
No signal when using
external antenna (ex.
Hands free in car).
If the issue has not been resolved Æ•Handle the unit according to local
directives.
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4On/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
are detected, refer to the “Display
Problems” chapter 7
Before proceeding Æ•Perform a flash upgrade.
Visually inspect contact pads on battery •If dirty or oxidized – Clean pads.
•If damaged – Replace the battery.
Power On
problems
Visually inspect battery connector •If dirty or oxidized – Clean it.
Note: Do not to bend the connector
pin’s.
•If damaged – Send to an electrical
repair location.
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Problem Area Items to Check Repair Action Reference Image
Visually inspect the power On/Off key •If damaged – Replace it.
If the issue has not been resolved Æ•Handle the unit according to local
directives.
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5Audio Problems
Problem Area Items to Check Repair Action Reference Image
Before proceeding Æ•Perform a flash upgrade and a setting
reset.
Visually inspect the microphone’s
external port •If clogged - Clean or replace rear
cover.
Microphone:
If the issue has not been resolved Æ•Handle the unit according to local
directives.
Before proceeding Æ•Perform a flash upgrade and a setting
reset.
Receiver “Ear
Speaker”
No sound or poor
quality sound Visually inspect speaker’s external port •If clogged – Clean or replace front.
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Problem Area Items to Check Repair Action Reference Image
Visually inspect speaker’s dust cloth •If dirty or damaged – Replace front.
If the issue has not been resolved Æ•Replace receiver.
If the issue has not been resolved Æ•Handle the unit according to local
directives.
Before proceeding Æ•Perform a flash upgrade and a setting
reset.
Loudspeaker:
No sound or poor
quality sound Visually inspect Loud speaker’s
external port •If clogged – Clean it.
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Problem Area Items to Check Repair Action Reference Image
Visually inspect the speaker box
assembly dust cloth. •If dirty or damaged – Clean the
Speaker Box assembly
Visually inspect the speaker box
assembly contact pins and PCBA
contact Pads.
•If dirty or oxidized – Clean pins &
pads.
•If damaged send to electrical repair.
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Problem Area Items to Check Repair Action Reference Image
If the issue has not been resolved Æ•Replace Speaker Box Assembly
If the issue has not been resolved Æ•Handle the unit according to local
directives.
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6Key Problems
Problem Area Items to Check Repair Action Reference Image
Keyboard:
A key on the main
keypad or Key foil
Dome Assy is not
functioning or is
intermittent.
Visually inspect for debris between
main keypad & Key foil Dome Assy,
and for damage to the main keypad &
Key foil Dome Assy
NOTE: Camera switch is located on
the key foil Dome Assy.
•If dirty – Clean both parts.
•If damaged - Replace main keypad
and/or Key foil Dome Assy as
necessary.
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Problem Area Repair Action
Items to Check Reference Image
Visually inspect whether the Key foil
Dome Assy is properly connected to its
connector on the PCBA.
•If improperly connected – Re-establish
proper connection.
If the issue has not been resolved Æ•Replace Key foil Dome Assy, if it has
not already been replaced.
If the issue has not been resolved Æ•Handle the unit according to local
directives.
Visually inspect for damage to the side
keys “Volume Key & Camera Key” •If damaged - Replace keys as
necessary.
Side keys
If the issue has not been resolved Æ•Handle the unit according to local
directives.
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7Display 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 are not
detected, refer to the On/Off
Problems” chapter 2
Before proceeding Æ•Perform a flash upgrade and a setting
reset.
Visually inspect whether the LCD flex
film is properly connected to its
connector on the PCBA
•If improperly connected – Re-establish
proper connection.
LCD problem
If the issue has not been resolved Æ•Replace the LCD.
NOTE: Misuse is not covered by
warranty. Refer to chapter 1.2
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Trouble Shooting Guide, Mechanical
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8Illumination Problems
Problem Area Items to Check Repair Action Reference Image
Before proceeding Æ•Perform a flash upgrade and a setting
reset.
Visually inspect whether the Key foil
Dome Assy is properly connected to its
connector on the PCBA.
•If improperly connected – Re-establish
proper connection.
Visually inspect the Key Foil Dome
Assy •If dirty or oxidized – Replace it.
•If damaged – Replace it
If the issue has not been resolved Æ•Replace the Key foil Dome Assy
Keys:
The entire Main
keypad or a portion
of the Main keypad
does not illuminate.
If the issue has not been resolved Æ•Handle the unit according to local
directives.
LCD Before proceeding Æ•Perform a flash upgrade and a setting
reset.
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