Service Manual
1
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
1、 Please read this service manual carefully and make sure all elements of anti-static are in place before
the repair work is carried out.
2、 Servicing and alignment MUST be undertaken by qualified personnel only.
3、 Please use specified tools and equipments for servicing, in which the parameters need to be calibrated
with specified criteria.
Content
Chapter 1 Product Specification ................................................................................................................................................... 3
Chapter 2 Explosive View ............................................................................................................................................................ 4
Chapter 3 Tools ............................................................................................................................................................................. 5
Chapter 4 Guidance of Disassembly/Assembly ........................................................................................................................... 6
Chapter 5 Pictures of PCBA ....................................................................................................................................................... 10
Chapter 6 System block diagram ................................................................................................................................................ 12
Chapter 7 Circuit diagram for each unit ..................................................................................................................................... 13
Chapter 8 Troubleshooting Guide ............................................................................................................................................... 19
Chapter 9 Firmware Upgrading Guide ....................................................................................................................................... 26
Chapter 10 CIT Testing .............................................................................................................................................................. 34
2
Chapter 1 Product Specification
Specification：
Network: GSM/GPRS 900/1800 or 850/1900MHz
Display: 2.4“TFT QVGA
Blue tooth：Support: V1.2, Don’t Support: Stereo Music (for both SIMs)
Radio：FM radio FM Record to T-Flash
Talking time:567Min＊
Standby time:260H＊
Lithium Battery: Standard（1000mAh）
USB Charging：USB 2.0
＊The actual time shall vary depending on the network situation
Main features and functions
Dual SIM Dual Standby Single Connection
FM Radio
Blue tooth (talk, file transfer)
Multi-Media
Camera：0.3M
USB 2.0 data transfer
T-Flash（Support 8G T Card）
2.4“TFT QVGA
MP3/3GP/MP4/AVI
82g(Handset weight：59g)
3
Chapter 2 Explosive View
A Shell
Keypad
DOME
PCBA
Vibrator
B Shell
Lens
LCD
Receiver
Speaker
Camera
Antenna
Battery
Cover
4
Chapter 3 Tools
r
Electric Iron（Figure 1）
Voltage Regulator（Figure 3）
PC, Data Cable(Downloading)（Figure 6）
DL Cable
Multi-meter（Figure 4）
Others（Figure 7）
Hot Air Gun（Figure 2）
Solder wire, soldering paste(Figure5)
Tweezers
Pick
Screw
Drive
Wrist
grounding
strap
Antistatic
gloves
5
Chapter 4 Guidance of Disassembly/Assembly
4.1 Disassembly
Remove the battery cover. 1
Remove the back cover by using pick. 3
Stick the protection film onto LCD. 5
Unscrew the six screws. 2
Remove the front cover. 4
Stick protection film onto lens. 6
6
Take out PCBA (using Tweesers) . 7
Remove the LCD (Using Electric Iron). 9
Remove the ESD film. 11
Disassembly completed.
Unmount LCD module. 8
Remove the speaker (Using Electric Iron). 10
Remove the camera(Using Electric Iron). 12
7
4.2 Assembly
Solder the Speaker. 3
Mount the PCBA onto back cover. 5
Paste the ESD film. 2 Solder the camera. 1
Install the antenna. 4
Remove LCD protection film. 6
8
Tighten the screws. 9
Assembly completed.
Mount the front cover. 8 Remove the protection film. 7
Install the battery cover. 10
9
Chapter 5 Pictures of PCBA
5.1 Pictures
5.1.1 Instruction & location of main components on side A.
5.1.2 Instruction & location of main components on side B.
J302
I\O Port
U402RF
Chipset AR1216
1
Keypad input interface.
J502 SIM
Jack
J503 SIM
Jack
X201
Crystal
J301
TFLASH
Jack
U705 BT
MT6612
Display interface
U502 PA
RF7170
U301
Storage
J201 battery
connector
U101 CPU
MT6252
U203 26M
Crystal
10
5.2 Layout
5.2.1 Layout of side A
5.2.2 Layout of side B
11
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