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SERVICE MANUAL
1. Main Functions:
-cool surface and full screen touch panel
-Audio Play/Video Recording/VGA Camera
-CMOS Camera, 2.0 M Pixel
-MMS/WAP/Email
-Support 2G T-Flash Card
-Support BT V1.2
-Support PC sync
2. Main Selling Points
-AM/FM radio/record
-2.8“TFT QVGA(240*320)
3. Other Functions
-USB2.0
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TABLE OF CONTENTS
INTRODUCTION………………………………………………………………………………...3
Chapter 1 EXPLODED VIEW AND COMPONENT DISPOSAL………………………..….4
EXPLODED DIAGRAM…………………………………………………………………….….4
DISASSEMBL Y AND ASSEMBLY …………………………………………………………….…….…5
SERVICE TOOLS………………………………………………………………………………...5
Chapter 2 SYSTEM BLOCK DIAGRAM…………………………………………………......11
DISASSEMBLE…………………………………………………………………………….……...7
ASSEMBLY………………………………………………………………………………….……..8
Chapter 3 INSTRUCTION OF THE UNIT CIRCUIT………………………………….……..12
Chapter 4 ACTUALL BOARD………………………………………………………….…..….16
SIDE A…………….…………………………………………..………………………………….…….….16
SIDE B……………………….…………………………………………………………………….…...….16
Chapter 5 TROUBLESHOOTING……………………………………………………….….…17
Chapter 6 FUNCTION TEST……………………………………………………..………..…..24
Chapter 7 PARAMETER SETTING INSTRUCTION…………………………………..…….25
Chapter 8 CATCHER INSTRUCTION…………………………………………………………27
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INTRODUCTION
The purpose of this document is to help service workshop technicians to service products. This service
manual must be used only by authorized service suppliers. The content of it is confidential. Please note that
provides other guidance documents for service suppliers. Follow these regularly and comply with the given
instructions. while every effort has been made to ensure the accuracy of this document, some errors may
exist. please keep in mind also that this documentation is continuously being updated and modified, so
always watch out for the newest version.
CAUTIONS
Please refer to the phone’s user’s guide for instructions relating to operation, care, and maintenance,
which include important safety information.
1. Servicing and alignment must be undertaken by qualified personnel only.
2. Ensure all work is carried out at an anti-static workstation and that an anti-static wrist strap is worn.
3. Use only approved components as specified in the parts list.
4. Ensure all components, modules, screws, and insulators are correctly re-fitted after servicing and
alignment
5. Ensure all cables and wires are repositioned correctly
Electrostatic discharge can easily damage the sensitive components of electronic products. Therefore,
every service supplier must observe the precautions which mentioned above.
GENERAL REPAIR INFORMATION
1. Make sure your testing equipment is functioning properly before beginning repair work.
2. before starting repairs you must observe ESD precautions such as being in your ESD
protected area and connecting your wristband.
3. use gloves to avoid corrosion and fingerprints.
4. cover windows and displays with a protective film to avoid dust and scratches.
5. use a lint-free cloth to clean the LCD.
6. when cleaning the pads use a soft cloth\ESD brush and isopropanol. Do not use a glass
fiber pencil: this scratches the surface and will corrosion.
7. non-faulty mechanical parts(except shielding lids and bent parts or soldered components).
May be reused if they are not soldered.
8. when removing the shielding lids make sure to replace them with new ones, otherwise the
high-frequency leakage can affect the device.
9. always use the original spare parts.
10. check the soldering joints of the parts concerned with regard to the fault symptom. And
resolder them if necessary.
11. remove excess soldering flux after repair.
12. observe the torque requirements when assembling the unit.
13. please aware that some malfunctions may be software related and solved by an update
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Chapter 1
EXPLODED VIEW AND COMPONENT DISPOSAL
EXPLODED
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DISASSEMBLY AND ASSEMBLY
SERVICE TOOLS
Iron
Oscillograph
Multimeter
850 heater
Voltage regulator
Constant temperature heater
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Computer and software download cable
Solder wire, soldering paste
Metal tweezers
Software
download cable
Solder wire
soldering paste
Screw driver
SRT-6
Metal tweezers, Screw driver, SRT-6 Plates
Microscope
Wrist
grounding strap
Antistatic gloves
Wrist grounding strap, Antistatic gloves
Plate
MTK series CPU plate
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DISASSEMBLY
Pull out battery cover.
Prize up the middle housing.
Stick LCM protection film
Take out the four screws.
Take out 3 screws.
Stick Lens protection film
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Prize up the main board from the housing.
Remove touch screen FPC with solder iron
ASSEMBLY
Solder touch screen FPC with solder iron Install main PCBA in back cover
Fix the screws Tear down LCD film
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Tear down Lens film
Lock the screws Assemble battery cover
Install the back cover.
-FINISH-
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TP FPC is easy to be broken as taking housing apart
Please Note:
1. Since this product has been in volume production, we can’t make a big
modification for PCBA and housing.
2. The TP FPC broken issue can be avoided if we do a correct operation for
taking hosing apart. Please refer to the operating indication on the left.
Press this shielding with
thumb before taking
Front-Rear housing apart,
until taking off the rear
housing from the front
housing.
Divide Front-Rear housing
from the top place
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