HTC PDA PHONE II, Andes Troubleshooting & Repair, －Ａ．Touch Panel Does Not Respond to Screen Tap

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14. 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)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)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.

(7)Once the defective part has been identified, verify it again with the defective part whether the symptom could be duplicated.

HTC confidential

© 2001, HTC Corporation. All rights reserved.

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Contents For PDA Phone Andes APP´D Table of contents 4END Introduction ContainsSpecification of AC Adapter GSM/GPRS Functional BlockGPRS/GSM 400MHzTotal 77 CONT.ON page no Total 77 CONT.ON page no TTE System Block Diagram Main unit Regulatory label on the rear housing of main unit LabelingTBD Label example01 ~ Servicing Tools Assembling and Disassembling PDA PhoneTotal 77 CONT.ON page no Total 77 CONT.ON page no Total 77 CONT.ON page no Use tweezers to remove the Vibrator 72H00401-00 Total 77 CONT.ON page no 72H00411-00 MB Pre-assemblyGasket on shielding cover Black poron of Send/End buttonBlack poron for volume button PN of this poron is 76H00483-00Total 77 CONT.ON page no Total 77 CONT.ON page no N72H00338-00 Antenna Assembly72H00339-00 77H00083-00 Warranty Seal Security LabelFIX Antenna Cover Test Camera Replacement assemby Connector, Back up battery replacement PadProblem Diagnostics List of Test JigsDiagnostic Program Clean Talk TimeHow to select test item Stop on failChecksum Refurbishment Total 77 CONT.ON page no To Main battery To PC Com Port Voltage 2.5 Criteria for Eeprom Block 1 Status Criteria on running Run Down Test Program B2. ProcedureB1. Requirement Capacity ≧ 50 %Current consumption measurement Fixture requirementReady for testing Unit is turn off and no display Single Single dotsBright dots Dark dotsForeign Scratch Or lints Power Off statusAll allowable defect dots Scratch, Object11.RF 11.1RF Test RequirementGSM 900 Transmitter Test RF Antenna Test SpecRF Antenna Spec DCS 1800 Receiver Test OS Upgrade and GSM code Upgrade Execute RUU Next Total 77 CONT.ON page no Done Following is the complete procedure for SD reflash Execute MTTY.exe and set into USB PortSerial V1.02 Following display will be shown on PC display … Then press ENTER, following display will be shown 100% Checksum is OK HTC confidential SD Download Sections=3 Press Power To Flash…… Once it is Done, display will show Classification of Non-Conformity Troubleshooting & Repair －Ａ．Touch Panel Does Not Respond to Screen Tap－B．Buttons Do Not Respond －A．SD Card cannot be used －A．Data Retention related problem －B．Battery discharges quickly even after fully charged －A．No Recorded Sound or Distorted sound Exploded Diagrams & Spare part list Spare part list Spare Part List with Picture 72H00339-00 75H00313-00 Appendix Customer, Retailer MisjudgmentHTC confidential FTP Repair Troubleshooting Guide Flow Total 77 CONT.ON. F page no