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13. Troubleshooting & Repair
Before repairing, please try to duplicate if the symptom exist or Customer mishandling .
１－Ａ．Main Unit Does Not Respond to Power Button
１－Ｂ．Main Unit Does Not Respond to Battery Switch
１－C．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 lock 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 replacement 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－Ａ．Touch Panel Does Not Respond to Screen Tap
(1) Dismantle the unit, check the perimeter of Display between Front Bezel and Touch Panel
surface for unusual foreign objects. Clean it, reassemble the unit and check the panel's
function again.
(2) Check the connection of LCM FPC whether is properly connected.
(3) Try with another LCM.
(4) Try with another Main Board.
(5) Replace LCM if necessary
(6) Replace Main Board if necessary.
HTC confidential
© 2001, HTC Corporation. All rights reserved.
B. Backup battery malfunction
TOTAL 84
CONT.ON. 73 PAGE NO. 72
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