Tank II

Service Manual
1. Main Functions:
-cool surface and Fashionable design
-Full keyboard for message writing
-Audio Play/Video Recording/VGA Camera
-CMOS Camera, 0.08 M Pixel
-MMS/WAP/Email
-Support 4G T-Flash Card
-Support PC sync
-Track ball function
-Network GSM900/1800/850/1900

2. Main Selling Points

-FM radio/record
-12.4 QQVGA 240*320

3. Other Functions
-USB1.1
-SIZE 121.2*50.7*13.4mm
 TABLE OF CONTENTS

INTRODUCTION……………………………………………………………………………..…...3
Chapter 1 EXPLODED VIEW AND COMPONENT DISPOSAL………………………...….4
EXPLODED DIAGRAM…………………………………………………………………….…...4

DISASSEMBLY AND ASSEMBLY …………………………………………………………….…….…5

SERVICE TOOLS………………………………………………………………………………...5

DISASSEMBLE…………………………………………………………………………….……....7

ASSEMBLY………………………………………………………………………………….……..8

Chapter 2 SYSTEM BLOCK DIAGRAM…………………………………………………….....11

Chapter 3 INSTRUCTION OF THE UNIT CIRCUIT………………………………….…...…..12
Chapter 4 ACTUALL BOARD………………………………………………………….…….….21
SIDE A…………….…………………………………………..……………………………………..….21

SIDE B……………………….……………………………………………………………………........22

Chapter 5 TROUBLESHOOTING…………………………………………………………….…23
Chapter 6 SOFTWARE INSTRUCTION OF SW UPDATE…………………………..…..…..29
Chapter 7 FUNCTION TEST………………………………………………………………..…….36
Chapter 8 PARAMETER SETTING INSTRUCTION……………………………………………37

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 includes 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
Chapter 1

EXPLODED VIEW AND COMPONENT DISPOSAL EXPLODED

DISASSEMBLY AND ASSEMBLY SERVICE TOOLS
Solder wire, soldering paste Wrist grounding strap, Antistatic gloves

Metal tweezers, Screw driver, SRT-6 Plates

Chapter 2

SYSTEM BLOCK DIAGRAM

Chapter 3

INSTRUCTION OF THE UNIT CIRCUIT

Circuit instruction of CPU

CPU—input of the keypad

-
The joint circuit of the f master and the FLASH data
Bluetooth control and data transmit port of master

Data control port of Double SIM card

SIM 1 Data
interface

SIM 2 Data
interface

7.2 MT6260 CPU power supply port

CPU voltage and current reference
Battery connector

Audio frequency PA

To LoudSpeaker
I/O connector (5PIN)

RF IC Build in MT6260
Power Supply

Logic Ctrl

TX Signal To RF PA

Crystal 26MHz RX from RF LNA

RF PA IC
FM radio
SIM card circuit
Chapter 4 PCB Layout chart

PCB layout SIDE A PCB layout SIDE B

 Loud Speaker

Micro USB

CPU(MT6260)

T-Flash
RF PA
Card

SIM2
SIM1

Charge
Circuit
Chapter 5

TROUBLE SHOOTING Test flow chart of test SIM card

Test flowchart of cannot power on (main)
The test flowchart of head phone
Test flowchart of incoming call with no ring.
Test flowchart of no display or display abnormally.
The test flowchart of download failed
Chapter6

Instruction of SW update

1 1. Install the USB driver without the USB cable plugged into the computer.
2 After it is ok, plug the cable then check the device manager as the picture below:
3. Double click to FlashTool_v3.0848
Choose right com port

1 Please choose auto format FAT in “Format FAT” as demonstrated below.

2 Tip Download Agent， choose MTK-ALLInOne.bin
Choose “Auto Format FAT”,
 6. Tip Scatter-loading to choose “txt” file in the SW folder, such as scat25_08A_GEMINI. Then the
BOOTLOADER and ROM will also set to be well .

7. Keep phone off , and tip Download to run the program, and the red bar appear, it shows the phone can connect
with this tool successfully, then it will write data into phone and tool will show the blue bar , after Ok appear with
the green circle. The process finish.
- 32 -
 ¾ Check if the SW is correctly

8. Power on the phone and input“#*37#*”，check its version number on the first option.
Chapter 7

FUNCTION TEST
Press “*#37*#” to check these items in standby mode:

1 Version: to check the version of the software

2 Echo Loop: blow on the microphone, the receiver will emit a sound
3 Key: press relevant keys appear in the screen

1 Vibration: The cellphone will vibrate

2 Loud SPK: the speaker will emit a sound
3 Ring: press start there will be some music from the speaker
4 LED: press confirm button to check if LED is normal
5 LCD: LCD will Auto Display
Chapter 8
PARAMETER SETTING INSTRUCTION China mobile as an example, other countries please
inquire the local operator
1. WAP parameter setting instruction
1) Data Account Process: Menu→Services→Data Account

GSM Data: Account Name: (default)

Number: 17266
User Name: WAP
Password: WAP
Line Type: ISDN
Speed: 9.6 Kbps
DNS: 010.000.000.172
GPRS: Account Name: (default)
APN: cnwap
User Name: WAP
Password: WAP

Auth. Type: (default)

2) WAP setting process: Menu→Services→WAP→Settings→Edit Profile

Edit Profile: Rename Profile: Optional Homepage: http://monternet.com
Data Account: GSM/GPRS Connection Type: HTTP (Proxy Address: 010.000.000.172)
Username: Optional Password: Optional
After setting as above, the WAP is ready.

2. MMS parameter setting instruction (Premise is WAP is valid)

Setting process: Menu→Messages→MMS→Message Settings→Server Profile→Edit profile
Edit Profile: Rename Profile: Same as WAP Profile name Homepage:
http://mmsc.monternet.com Data Account: Same as WAP Data Account
Connection Type: Same as WAP Data Account Username: Optional
Password: Optional
After setting as above, the MMS is ready.

3. Email parameter setting instruction (Premise is WAP is valid)

1) GPRS setting process: Menu→Services→Data Account→GPRS
Edit Profile: Account Name: Optional APN: cmnet 2) Email
Profile setting process: Menu→Messages→Email→Email Profile
A. Outgoing server: stmp.126.com (depend on the user’s Email website )

E-Mail Address: Full E-Mail Address of the user’s Password: Password of the use’s E-Mail
B. Incoming server: pop3.126.com (depend on the user’s Email website ) E-Mail Address: Full E-Mail
Address of the user’s Password: Password of the use’s E-Mail
After setting as above, the MMS is ready.