Generic Troubleshooting - HTC Love Service Manual

Doc. Title

10. Generic Troubleshooting

1． ． ． ． Main Unit Does Not Respond to Power Button
(1) Connect the AC adapter, maybe the battery pack is exhaust and wait for few minutes if unit boot.
(2) Check if battery installed well and switch to lock.
(3) Check key lock switch if enable
(4) Check the Power Button if any damage.
(5) Try with another battery pack.
(6) Try if unit can enter boot-loader mode. If so, try to re-flash ROM if can solve the problem.
(7) Check all connections including LCD FPC to Main Board.
(8) Replace Main Board if necessary.
(9) Once the defective part has been identified, verify it again with the defective part whether the symptom
could be duplicated.
2． ． ． ． Touch Panel Does Not Respond to Screen Tap
(1) Check the connection of LCM FPC cable whether is properly connected.
(2) Try to cold boot the unit then tries again.
(3) Try with another LCM.
(4) Try with another Main Board.
(5) Replace LCM if necessary
(6) Replace Main Board if necessary.
(7) Once the defective part has been identified, verify it again with the defective part whether the symptom
could be duplicated.
3． ． ． ． Buttons Do Not Respond
(1) Try to cold boot the unit then tries again.
(2) Dismantle the unit; check the status of switches on the Main Board and the plastic parts of the Button not
responding.
(3) Try with another Main Board or Front Bezel.
(4) Replace Main Board or Front Bezel if necessary.
(5) Once the defective part has been identified, verify it again with the defective part whether the symptom
could be duplicated.
4． ． ． ． Unusual Vertical / Horizontal lines or partial display
(1) Check the connection of LCM FPC whether is properly connected.
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Love Service Manual
Doc. No. DOC-000
Issued Date 2007/02/01
Revised Date
Page 58 of 66
REV.
A02