Service Manual for MDA2 HTC Proprietary Confidential Treatment Requested Rev. 1.0 September 12, 2003 HTC Corp. Engineering Mobility HTC confidential © 2001, HTC Corporation. All rights reserved. TOTAL 43 CONT.ON. 2 PAGE NO.
TITLE: Service Manual for MDA2 REV. DATE NO. 1.0 Aug 26,2003 CONTENTS DEP. REVISED APP D STGE.PER. TSD HTC confidential © 2001, HTC Corporation. All rights reserved. TOTAL 43 CONT.ON. 3 PAGE NO.
Table of contents 1. INTRODUCTION ･･････････････････････････････････････････････････････ 4 2. PRODUCT SPECIFICATIONS ･･････････････････････････････････････････ 4 2.1 PRODUCT CONFIGURATION ･･････････････････････････････････････････ 4 2.2 SPECIFICATIONS OF MDA2･･･････････････････････････････････････････ 5 2.3 SPECIFICATIONS OF AC ADAPTER …………………………………………………5 2.4 GSM/GPRS FUNCTIONAL BLOCK PART ･････････････････････････････ 5 3. SYSTEM BLOCK DIAGRAM ･････････････････････････････････････････ 10 4.
1.Introduction This manual provides the technical information to support the service activities of the MDA2. This document contains highly confidential information, so any or all of this document should not be revealed to any third party. 2.Product Specifications 2.1 Product Configuration Standard Package Item Contain 1 Main Unit 2 USB Cradle 3 Stylus 4 AC Adapter 5 Earphone 6 Pouch, Leather Case 7 Service Kit 8 Quick Start Guide 9 User’s Manual 10 Battery Pack 2.
Item Platform Specification • Microsoft Pocket PC 2003 phone edition - English, French, German, Italian, Spanish,Portuguese. • • Combined GSM/GPRS and PDA. 2 logical block (PDA and GSM/GPRS) solution, layout is integrated into one module • GSM/GPRS can be turned off to let PDA to run alone Outside Dimensions 69.
GPRS/GSM module (Tri-band) GSM900: 880-915, 925-960MHz DCS1800 1710 ~ 1785,1805 ~ 1880 MHZ PCS1900 1850 ~ 1910, 1930 ~ 1990MHZ Antenna Generic GSM Service Internal Antenna Call forwarding Explicit Call Transfer Spool Icon Wave ring tone download /compose Long message (640 characters) SIM LOCK Network lock GPRS functionality GPRS Class B, Multi-slot Class 10 Memory ROM 32MB(Standard,CPU embedded) and 64/96/160MB (CPU embedded 32MB NOR Flash,32 bit Data bus + M-System 32/64/128 MB NAND Flash,16 bit da
Interface One Infrared port IrDA SIR One 22 pin individual Port for signals (for USB, Serial, Car Kit, Power and Audio) One SIM card slot One SDIO/MMC card slot (B-Square SDIO driver) One 34 pin Back pack connector One Audio Jack (2.
Audio Microphone build in Software Echo cancellation Receiver Hardware AGC Hardware Full duplex WAV/WMA/MP3 stereo 16 bits with 8KHz,11 KHz,16KHz,22KHz,44.1 KHz, 48 KHz sampling rate CMOS Camera Color CMOS camera module VGA (480x640) resolution with JPEG encoder ALC (Auto Light Control) AWB (Auto White Balance) Preview Mirror on battery cover Camcorder QCIF, 15 fps(min), (in live mode)( max 15 seconds per clip) Operating in 5 Lux(Min) Cradle Cradle connector connected to main unit Audio jack (2.
Accessories Retractable sync. Cable (USB/Serial) Cradle (USB, Serial) AC adapter Car adapter Stylus AC adapter with power plug Detacheable LCD protector Car Kit Stereo wired headset with mono microphone, volume control, Pick up/Hang up the incoming/Outgoing call, Call waiting, conference call, microphone mute.
3.SYSTEM BLOCK DIAGRAM HTC confidential © 2001, HTC Corporation. All rights reserved. TOTAL 43 CONT.ON. 11 PAGE NO.
3. Servicing Tools This chapter provides information for the servicing tools for MDA2. List of Servicing Tools No. Item Use Remark 1 USB or Serial Cradle Check for Cradle I/F (Serial communication only) 2 USB DATA interface Cable Check for Cradle I/F (USB communication only) 3 Special Made Plastic Stick Disassembling for 4 SD Memory Card For SD card test 5 Earphone Headset For Audio test. 6 AC Adapter Power supply to MDA2. HTC confidential © 2001, HTC Corporation. All rights reserved.
5. Assembling and Disassembling 5.1 Disassembling Tools needed for Assembling and Disassembling the MDA2 1. Lens Cleaning Tissue. 2. Flat Screw Driver 2.4mm 3. Philip Screw Driver #0. 4. Torex Screw Driver T6X40 5. Special Made Plastic Stick. 6. Tweezers. Remove the Stylus, SD Card slot Filler, and the Car antenna connector cover. 2 1 Next, Remove the Back cover by releasing the fixing lock as step 1. Then slightly push backward the back cover as step 2.
Press Unlock and release the battery Remove the battery from unit Warning: To reduce risk of fire or burns, do not disassemble, crush, puncture, short external contacts, or dispose of in fire or water. Replace only with specified batteries. Recycle or dispose of used batteries properly. To separate the housing , Use the plastic stick to open the housing . Insert and gently twist into the gap between stylus hole and antenna cover.
There are three hooks which fix the antenna cover and bezel. Insert to the gap and slightly pull upward from right to left to release the hooks. Antenna cover is removed. Remove two screws which fix the antenna to MB. Screw P/N:72H00339-00 1 2 Remove 6 screws which fixed the housing and bezel. There are two types of screw 1 5 2 3 Screw 1~4 P/N 72H00338-00 4 6 Screw 5,6 P/N 72H00339-00 Now separating the housing.
Gently open the housing Turn over the housing to the other side as shown on picture. Once the housing is removed, next to remove 3 screws which fix the MB into bezel. P/N 72H00401-00 Gently and carefully release the LCM FPC by litting the connector lock upward using your finger or soft plastic tweezers. HTC confidential © 2001, HTC Corporation. All rights reserved. TOTAL 43 CONT.ON. 16 PAGE NO.
Then remove the Camera module by slightly releasing its FPC(1) and camera which is sticked with Double side tap on MB (2) 2 1 Turn MB to the other side and remove the Navigation button by pulling up. Correct position of Navigation button Use tweezers to remove the Vibrator HTC confidential © 2001, HTC Corporation. All rights reserved. TOTAL 43 CONT.ON. 17 PAGE NO.
The LCM, Speaker , MIC is located on upper part (Bezel side). To Disassembly LCM module Hold the entire assembly as seen on the picture , push aside the bezel and push the panel from front side simultaneously . Notice the starting location. Doing this to release the LCM from 4 hooks which located 2 at its right and left respectively. Then, gently pull out the LCM from its lower part hook . If the Speaker need to be replaced, remove two screw which fix the speaker .
If MIC need to be replaced, just take it out from its place slightly by using tweezers. Take out the MB and disassembly procedure is done. The disassembly procedure is finished. HTC confidential © 2001, HTC Corporation. All rights reserved. TOTAL 43 CONT.ON. 19 PAGE NO.
5.2 Assembling Be noticed that if MB need to be replaced, need to apply insulation tape on lower right corner as shown on picture. Insulation tape P/N: 76H00469-00 P/N for this insulation tape : 76H00469-00 On the other side , need to apply 3 gasket on shielding cover. Remember to insert navigation button to its place. Gasket Next to paste 2 EA Poron (black) aside to SEND and END switch on MB. HTC confidential © 2001, HTC Corporation. All rights reserved. TOTAL 43 CONT.ON. 20 PAGE NO.
Next to apply one black poron aside to volume button Totally there are four places at MB need to be applied pre-assembly. Install the MIC into its place. Before Assemble LCM , be noticed to apply stylus poron on the rear side of LCM Be noticed that the poron should not exceed the edge and interfere to bezel hooks. Insert the LCM starting from lower bottom part and insert into the rib.
Next Push aside the bezel and insert the LCM to click into 2 hooks located on right and left respectively. Assembly the speaker and fix two screws on it. Apply 3 screws on MB Then insert the LCM FPC into the connector , make sure the FPC is fully inserted , then lock it by pressing the cover down. HTC confidential © 2001, HTC Corporation. All rights reserved. TOTAL 43 CONT.ON. 22 PAGE NO.
Next Camera module assembly. 1. Make sure the Aluminium foil is clean and workable. 2. Put the Camera on it. Place the Camera into correct position and fix it. Important Notice: Before inserting the FPC into its connector, use your finger to flat the FPC first (as shown on picture) the lock it. (The FPC is fragile , to prevent break ) Make sure Camera is fixed correctly. HTC confidential © 2001, HTC Corporation. All rights reserved. TOTAL 43 CONT.ON. 23 PAGE NO.
Next Close the Rear Housing to upper part starting from left side (with Volume button) TIPS: Adjust the volume button to its center first before full closing the Housing . Antenna Assembly Put the antenna into its place, starting from upper part, then press and insert its two ribs correctly to the housing. Then fasten two screws of the antenna. Continuing with 4 screws at the middle part of housing. P/N: Next two screws at the lower bottom P/N: HTC confidential © 2001, HTC Corporation.
FIX Antenna Cover Put the antenna cover and fix it starting from unit left side (side with volume button) Warranty Seal (Security Label) Be sure to apply new Warranty seal once the unit has been repaired before sending back to customer. In case of MB replacement, since the IMEI has to follow new MB IMEI, repair site is required to re-print Regulatory label to change IMEI no, but Serial No. should remain unchanged. Put the Battery into its place and lock it. HTC confidential © 2001, HTC Corporation.
Put back the battery cover. Put back the stylus, SD filler and Car antenna connector cover back into the unit. Now The unit is ready for performing TEST. The Unit Assembly is done ready for further tests. HTC confidential © 2001, HTC Corporation. All rights reserved. TOTAL 43 CONT.ON. 26 PAGE NO.
6. Problem Diagnostics 6.1.
6.2.
6.3 Troubleshooting & Repair Before attempting to Diagnose the unit received for repair, perform a Full Reset (Cold Boot) in advance. Main Unit Does Not Respond to Power Button 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.
B Buttons Do Not Respond (1) Dismantle the unit, check the status of switches on the Main Board and the plastic parts of button of the Button not responding. (2) Try with another Main Board or Front Bezel. (3) Replace Main Board or Front Bezel if necessary. (4) Once the defective part has been identified, verify it again with the defective part whether the symptom could be duplicated.
(3) Try with another Main Board. (4) Replace Main Board if necessary. (5) Once the defective part has been identified, verify it again with the defective part whether the symptom could be duplicated. A PC Connection (USB / Serial) not possible (1) Check whether “Connection Settings” in the MS ActiveSync is properly set. (2) Check whether it connects with other cables or cradle, customer’s cable might be damaged.
A Data Retention related problem (1) Back up battery is rechargeable, to retention purpose when main battery power is used up or when changing the main battery, Make sure to charge the unit if not use for a while. (2) Data introduced by User might be lost when Battery has drained completely. (3) Ask user to charge the Main Unit when latest warning message pops up.
symptom could be duplicated. . 7 B Battery discharges quickly even after fully charged (1) Make sure the Battery Pack takes fully charge with AC Adapter. (2) Check whether the condition of Battery Charging status is correct. (3) Dismantle the unit and check the appearance of Battery Pack. (4) Try with another Battery Pack or Replace Battery Pack if necessary (5) Try with another Main Board or Replace Main Board if necessary.
(1) Check “Sound & Notifications” Settings in the unit for Sound Enabling. (2) Make sure it’s not MUTED. (3) Dismantle and Check whether the Microphone is properly installed (check or missing rubber) (4) Replace Microphone if necessary. (5) Replace Main Board if necessary. (6) Once the defective part has been identified, verify it again with the defective part whether the symptom could be duplicated.
7. Diagnostic Program 7.1. List of Test Items No. 1 Item RAM Test Description RAM Check Size/Write/Read/Comparison test. 2 Display Test Test the LCD display quality. 3 Touch Test Touch screen alignment test. Suggest to test in WinCE 4 Playback Test Play sound with 8KHz simulation wave. 5 Record Test Record audio sound and playback it(INT/EXT) 6 Button Test Test every most of button.
Serial V1.01 Then, wait about 10 seconds, the display will show : Himalaya DIAG v1.00i RAM TEST Waiting for GSM ready Display Test --------- How to select test item: Using navigation button -"Up" or "Down" to select the test items How to execute the test program: Press “Action” to start the test No. 1 Item RAM Test Description Possible cause if fail Display Size and read/write test. It will show OK if pass. Could be M/B issue Stop on fail.
3 Touch Test Tap the cross mark (+) with stylus on the correct location. Could be LCM issue Fail if no reaction Calibrate the screen following the + mark. Press ACTION to exit. 4 5 Play Test Record Test Play the tone with 8KHz/L-channel, then Could be speaker or Hear the sound and notice if bad sound quality happens M/B issue Select this item to record test, then press Action to start Could be MIC or M/B recording. It will automatically playback it.
12 SD Test Insert SD card (Enable Write Protect) and start test. Pull out Could be M/B issue the SD card if you see the message< “Pluck OK > Please remove locked SD . Adjust lock switch to unlock site (Disable Write Protect), and insert it. The program will read & write to SD card for test. Once finished, display will show Please remove SD card.
8.1 Exploded Diagrams & Spare part list HTC confidential © 2001, HTC Corporation. All rights reserved. TOTAL 43 CONT.ON. 39 PAGE NO.
Spare part list Item Description HTC P/N Using Q'ty 1 Speaker, MDA2 36H00177-00 1 2 GSM ANTENNA 36H00158-00 1 3 RECHARGEABLE BATTERY,LI-ION polymer,3.
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. 1 Item Possibility No Power even the Built-in Battery switch is switched OFF or exhausted.
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.
12 Hang up Software being used sometimes is not fully compatible with the system. Execute many application programs simultaneously Software that requires big amount of memory spaces or the system memory is low or the files being used is fragmented. 13 System Memory is enough, but is shows Software that requires big amount of memory spaces or the system memory is low or the files being used is fragmented. insufficient.
B. Repair Troubleshooting Guide HTC confidential © 2001, HTC Corporation. All rights reserved. TOTAL 43 CONT.ON. F PAGE NO.
