Generic Troubleshooting - HTC CENSUS Service Manual

.
Doc. Title

7. Generic Troubleshooting

１－Ａ．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.
(3) Check the Power Button if any damage.
(4) Try with another battery pack.
(5) Try if unit can enter boot-loader mode, if so, Try to re-flash ROM if can solve the problem.
(6) Check all connections including LCD FPC to Main Board.
(7) Replace Main Board if necessary.
(8) 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) Check hold switch is enabling.
(2) Check the connection of LCM FPC cable whether is properly connected.
(3) Try to cold boot the unit then tries again.
(4) Try with another LCM.
(5) Try with another Main Board.
(6) Replace LCM if necessary
(7) Replace Main Board if necessary.
(8) Once the defective part has been identified, verify it again with the defective part whether the symptom
could be duplicated.
3－A．Unusual Vertical / Horizontal lines or partial display
(1) Check the connection of LCM FPC whether is properly connected.
(2) Try to cold boot the unit then tries again.
(3) Try to re-flash the ROM code.
(4) Try with another LCM.
(5) Try with another Main Board.
(6) Replace LCM if necessary
(7) Replace Main Board if necessary.
(8) Once the defective part has been identified, verify it again with the defective part whether the symptom
could be duplicated.
HTC CONFIDENTIAL
HTC Corporation
Melbourne Service Manual
Doc. No.
DOC-00025733
Issued Date 2008/1/15
Revised Date 2008/7/14
Page
REV.
A03
37 of 20