Generic Troubleshooting - HTC Dream Service Manual

Doc. Title

7. Generic Troubleshooting

1．Main Unit Does Not Respond to Power Button
(1) Connect the AC adapter, maybe the battery pack is exhaust and wait few minutes for battery recharging.
(2) Check if battery installed well.
(3) Check the Power Button whether it's damaged.
(4) Replace another battery pack.
(5) Try to start boot-loader mode [refer to section 4.2]. Re-flash ROM if boot loader mode is enabled.
(6) Check all connectors including LCD FPC to Main Board.
(7) Replace Daughter Board if necessary.
(8) Replace Main Board if necessary.
(9) Once the defective part has been identified, verify the defective part again whether the symptom could be
duplicated with another unit.
2．Touch Panel Does Not Respond to Screen Tap
(1) Check the connection of LCD FPC cable whether is properly connected.
(2) Try to cold boot the unit then perform screen tap again.
(3) Try with another Touch Panel.
(4) Try with another Main Board.
(5) Replace Touch Panel if necessary
(6) Replace Main Board if necessary.
(7) Once the defective part has been identified, verify the defective part again whether the symptom could be
duplicated with another unit.
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 the defective part again whether the symptom could be
duplicated with another unit.
HTC CONFIDENTIAL
HTC Corporation
.
Dream Service Manual
Doc. No. DOC-00045020
Issued Date 2008/07/14
Revised Date 2008/10/20
Page 90 of 113
REV.
A04