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Doc. Title
Elf/Elfin series model Service Manual
CHAPTER 8 –TROUBLESHOOTING AND REPAIR
Before repairing, please try to duplicate if the symptom exist or Customer mishandling
¢ ° ¡ Ð
A¡ D Main Unit Does Not Respond to Power Button
¢ ° ¡ Ð
B¡ D Main Unit Does Not Respond to Battery Switch
¢ ° ¡ Ð
C¡ D Charge light is red when plug in AC adapter
(1) Make sure the Battery is installed properly to activate the battery pack.
(2) Connect the AC Adapter, maybe the battery pack is exhaust.
(3) Check the Battery cover is close properly.
(4) Try with another battery pack.
(5) Replace battery pack if necessary.
(6) Try to enter boot loader mode, Perform Re-flash OS if successfully.
(7) CMOS Camera is not assembled properly.
(8) Check all connections including LCD FPC to Main Board. Try with another Main Board.
(9) Fuse blown.
(10) Customer abuse caused the power button fallen off
(11) Both item 9 & 10, MB replacements is necessary unless you are authorized to do board level repair.
(12) If
Charge light is red when plug in AC adapter, it means the main battery is not charge enough and can't power on,
You just need to continue charge unit the light become Amber.
(13) Once the defective part has been identified, verify it again with the defective part whether the
Symptom could be duplicated.
2¡ Ð A¡ D Touch Window Does Not Respond to Screen Tap
(1) Check the perimeter of Display between Bezel and Touch Window Surface for unusual foreign objects. Clean it,
reassemble the unit and check the Touch Window function again.
(2) Check the connection of LCD/Touch Window FPC whether is properly connected.
(3) Try with another LCD/Touch Window.
(4) Try with another Rigid-Flex board.
(5) Try with another Main Board.
(6) Replace LCD/Touch Window if necessary
(7) Replace Main Board if necessary.
2¡ Ð B¡ D Buttons Do Not Respond
HTC CONFIDENTIAL
6/30/2008 2:33:43 PM
.
HTC Corporation
DOC-00028788
Doc. No.
Issued Date
2007/05/03
Revised Date
2008/03/21
Page
54 of 73
REV.
A08
SM-TP001-0704
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