HTC MDA2 service manual Appendix, Customer, Retailer Misjudgment

Page 40

Appendix

A. Customer, Retailer Misjudgment

Before attempt repairing the unit, make sure the type of reported failure could be clearly reproduced; otherwise, check with the customer or distributor once again to identify the problem correctly.

The following are failure symptoms that are typical by misjudgment

No.	Item	Possibility

1	No Power even the	Built-in Battery switch is switched OFF or exhausted.
	power button is pressed
	power button is pressed	While Back Light is turned OFF, the surrounding lighting will be
		reflected on the panel and in a dim location, it looks like the unit is
		turned OFF.

		According to the Power Management settings, the units will be
		switched OFF automatically.

2	Battery discharges	The battery life depends on the devices being used in SD Card
	quickly	Slot, and frequency of use of the Front light. These functions
		consume a lot of energy.

		Operating with front light ON, or using high energy consumption
		devices such as SD Memory Card will drain out the battery pack
		faster.

HTC confidential

© 2001, HTC Corporation. All rights reserved.

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Contents For MDA2 APP D Table of contents 2Specifications of MDA2 Product SpecificationsIntroduction Specification of AC Adapter GSM/GPRS Functional BlockGPRS/GSM PDA Functional BlockTotal 43 CONT.ON page no Total 43 CONT.ON page no TTE System Block Diagram Servicing Tools Assembling and Disassembling DisassemblingTotal 43 CONT.ON page no Total 43 CONT.ON page no Total 43 CONT.ON page no Use tweezers to remove the Vibrator Speaker Total 43 CONT.ON page no Gasket LCM Poron Total 43 CONT.ON page no Total 43 CONT.ON page no Antenna Assembly TipsFIX Antenna Cover Test Problem Diagnostics List of Test JigsClassification of Non-Conformity Touch Panel Does Not Respond to Screen Tap Buttons Do Not Respond Unusual Vertical / Horizontal lines or partial displayBack Light Does Not Turn ON/OFF SD Card cannot be usedPC Connection USB / Serial not possible Wireless Connection GSM / WAP / Gprs not possibleIrDA Connection not possible Data Retention related problem Battery Pack does not startBattery discharges quickly even after fully charged Battery Pack does not rechargeNo Sound from Speaker or Distorted sound No Recorded Sound or Distorted soundHousing Cosmetic damage Diagnostic Program Clean Talk TimeStop on fail Checksum Refurbishment Exploded Diagrams & Spare part list Spare part list Appendix Customer, Retailer MisjudgmentResponse HTC confidential Repair Troubleshooting Guide