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Sony Ericsson J100a, Troubleshooting Manual, Mechanical, Page: 13 / 17

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Sony Ericsson J100a Troubleshooting Manual, Mechanical Download Page 13

 
 
 
 
 

Trouble Shooting Guide

, 

Mechanical

 

 

4/000 21-1/FEA 209 544/114 A 

Company Internal 

©

 Sony Ericsson Mobile Communications AB 

13(17) 

 

6 Key 

Problems 

Problem Area 

Items to Check 

Repair Action 

Reference Image 

Keypad: 

A key on the 
keypad is not 
functioning or it is 
intermittent 

Visually inspect for dirt between keypad 
and dome foil, and for damage to the 
keypad or the dome foil. 

 

•

  If dirty – Clean both parts. 

•

  If damaged - Replace keypad and/or 

dome foil if necessary. 

 

If the issue has not been resolved 

!

 

•

  Replace the dome foil, if it has not 

already been replaced. 

 

 

If the issue has not been resolved 

!

 

•

  Handle the unit according to local 

directives. 

 

 

Summary of Contents for J100a

Page 1: ...ble Shooting Guide Mechanical Applicable for J100a J100c and J100i Contents 1 General 2 1 1 Service functions in the software 2 1 2 Misuse and other no warranty issues 3 2 Appearance Problems 7 3 Network Signal Problems 8 4 On Off Problems 9 5 Audio Problems 10 6 Key Problems 13 7 Alert Problems 14 8 SIM Problems 15 9 Charging Capacity Problems 16 10 Revision History 17 ...

Page 2: ...cific 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 There are two different service menus 82 Here you will find information about software and hardware versions 890 Here you will find the test menu The test menu will looks like this Keypad Vibrator LCM Display test Buzzer Ring ...

Page 3: ... 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 brok...

Page 4: ...nternal Sony Ericsson Mobile Communications AB 4 17 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 ...

Page 5: ...s 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 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 Se...

Page 6: ...ompany Internal Sony Ericsson Mobile Communications AB 6 17 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 ...

Page 7: ...ser 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 keypad If dirty Clean keypad If unacceptably scratched or damaged Replace keypad NOTE Misuse is not covered by warranty Refer to chapter 1 2 Appearance Visually inspect for improper gap between se...

Page 8: ... Problem Area Items to Check Repair Action Reference Image Visually inspect antenna contact pads If dirty or oxidized Clean the pads and replace the antenna assembly Visually inspect antenna If dirty or oxidized Replace it If damaged Replace it No Signal or Poor signal If the issue has not been resolved Handle the unit according to local directives ...

Page 9: ...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 Visually inspect contact pads on battery If dirty or oxidized Clean pads If damaged Replace the battery Visually inspect the power key If damaged Replace the Dome Foil If the issue has not been resolved Handle t...

Page 10: ... AB 10 17 5 Audio Problems Problem Area Items to Check Repair Action Reference Image Visually inspect the microphone s external port If clogged Clean or replace Rear cover If the issue has not been resolved Replace microphone Microphone If the issue has not been resolved Handle the unit according to local directives ...

Page 11: ...ir Action Reference Image Visually inspect earphone s external port If clogged Clean or replace front cover Visually inspect speaker s dust cloth If dirty or damaged Replace front cover If the issue has not been resolved Replace earphone Earphone No sound or poor quality sound If the issue has not been resolved Handle the unit according to local directives ...

Page 12: ...17 Problem Area Items to Check Repair Action Reference Image Visually inspect the loudspeaker s dust cloth If dirty or damaged replace Rear cover If the issue has not been resolved Replace loudspeaker Loudspeaker No sound or poor quality sound If the issue has not been resolved Handle the unit according to local directives ...

Page 13: ... on the keypad is not functioning or it is intermittent Visually inspect for dirt between keypad and dome foil and for damage to the keypad or the dome foil If dirty Clean both parts If damaged Replace keypad and or dome foil if necessary If the issue has not been resolved Replace the dome foil if it has not already been replaced If the issue has not been resolved Handle the unit according to loca...

Page 14: ... AB 14 17 7 Alert Problems Problem Area Items to Check Repair Action Reference Image Before proceeding Perform a flash upgrade and a setting reset Visually inspect the vibrator pads on the PCB If dirty or oxidized Clean them Vibrator Visually inspect the vibrator If dirty or oxidized Replace it If damaged Replace it ...

Page 15: ...ndetected Insert SIM Inspect SIM holder If dirty or oxidized Clean If damaged Send to an electrical repair location Unit indicates that an incorrect SIM is inserted Insert correct SIM Check if the phone is locked to a particular carrier and whether the correct carrier s SIM is being used Use Correct Carrier SIM or test SIM If the issue has not been resolved Handle the unit according to local direc...

Page 16: ...roblems Problem Area Items to Check Repair Action Reference Image Visually inspect the contact pads of the battery If dirty or oxidized Clean If damaged Replace battery Visually inspect the system connector If dirty oxidized or damaged Replace Battery will not charge If the issue has not been resolved Handle the unit according to local directives ...

Page 17: ...Trouble Shooting Guide Mechanical 4 000 21 1 FEA 209 544 114 A Company Internal Sony Ericsson Mobile Communications AB 17 17 10 Revision History Rev Date Changes Comments A 2006 04 10 First release ...

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