HTC MDA2 service manual Response

Page 41

3

Battery cannot be

Using AC adapter that is NOT supplied with the unit.

 

charged

 

 

Charging the battery while operating the unit with heavy

 

 

loadings could cause the temperature inside the unit to build up

 

 

which could cause the unit stop charging. At this moment, the

 

 

LED indicator will flash Yellow to notify user that the charging has

 

 

been stopped. Or the temperature is extremely low will also stop

 

 

charging.

 

 

Since the extreme high or low temperature will cause the battery

 

 

to discharge quickly, it has been designed to cut battery charge

 

 

below 0 and above 35~40 to protect the battery pack.

 

 

 

4

Cannot make

If the unit could pass the test with Loop back Interface card, the

 

communications via

possibility of unit malfunction becomes low. Then the following

 

mobile phones through

items could be the reason of problem such as location, timing,

 

exclusive cable.

signal strength, service provider’s mixed up, or problem with the

 

 

mobile itself. Or could be incompatibility issue.

 

 

 

5

Cannot use SD/CF

Cards which are not being pre-formatted.

 

Memory Card

 

 

SD card has been switched to Write Protect mode.

 

 

 

 

 

Card not inserted completely, or bad contact between connector

 

 

contacts.

 

 

 

6

Black or White dot on

For LCD panel’s normal behavior, it is hard to find a panel

 

the screen.

without any bad pixel. Once the numbers of dots and the distance

 

 

between them are within the specifications, it is allowed.

 

 

 

7

Touch Screen or

Could be wrong operation.

 

Program Buttons are

 

 

Screen not properly aligned with the stylus calibration.

 

not reacting.

 

 

 

 

8

Front Light dim, cannot

Check the Front Light settings in Power Management settings

 

turn ON, or shuts OFF

 

 

automatically.

 

 

 

 

9

Cannot playback music,

When Battery low, the music playback becomes difficult and the

 

No sound or volume is

volume could become lower.

 

low.

 

 

 

 

10

Cannot execute

Could be an incompatible software

 

installed application

 

 

programs

 

 

 

 

11

Operation is slow in

Could be insufficient memory. Check amount of system memory.

 

response

 

 

 

 

HTC confidential

© 2001, HTC Corporation. All rights reserved.

TOTAL 43 CONT.ON. 42 PAGE NO. 41

Image 41
Contents For MDA2 APP D Table of contents Introduction Product Specifications2Specifications of MDA2 GSM/GPRS Functional Block Specification of AC AdapterPDA Functional Block GPRS/GSMTotal 43 CONT.ON page no Total 43 CONT.ON page no TTE System Block Diagram Servicing Tools Disassembling Assembling and 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 Tips Antenna AssemblyFIX Antenna Cover Test List of Test Jigs Problem DiagnosticsClassification of Non-Conformity Touch Panel Does Not Respond to Screen Tap Unusual Vertical / Horizontal lines or partial display Buttons Do Not RespondBack Light Does Not Turn ON/OFF SD Card cannot be usedIrDA Connection not possible Wireless Connection GSM / WAP / Gprs not possiblePC Connection USB / Serial not possible Battery Pack does not start Data Retention related problemBattery Pack does not recharge Battery discharges quickly even after fully chargedNo Sound from Speaker or Distorted sound No Recorded Sound or Distorted soundHousing Cosmetic damage Clean Talk Time Diagnostic ProgramStop on fail Checksum Refurbishment Exploded Diagrams & Spare part list Spare part list Customer, Retailer Misjudgment AppendixResponse HTC confidential Repair Troubleshooting Guide