Blu LIFE ONE M User manual

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LIFE ONE M SERVICE MANUAL

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CAUTIONS
Please refer to the phone’s user’s guide for instructions relating to operation, care, and maintenance, which include
important safety information.
Servicing and alignment must be undertaken by qualified personnel only.
Ensure all work is carried out at an anti-static workstation and that an anti-static wrist strap is worn.
Use only approved components as specified in the parts list.
Ensure all components, modules, screws, and insulators are correctly re-fitted after servicing and alignment
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.
CONTENTS
Content
1. Brief Introduction….……………………………………………………………………………….….3
2. Exploded View………………………………………………………………………………………….4
3. Tools……………………………………………………………………………………………………..5
4. Assemble & Dissemble
Dissembly..................…………………………………………………………………………...6～11
Assembly………………………………………………………………………………………...12～17
5. Picture of main board
A&B side of PCBA .…………….…………………………………………………….…………..18
A&B of PCBA Layout………….….………….…………………………….………………….…....19
6. System Block Chart…………………………………………………………………………………...20
7. Unit Circuit Map ..…......................................................................................................... 21～27
8. Trouble Shooting Guide …..…………………………………………………………………….28～32
9. Upgrading ………………….……………………………………………………………………. 33～38
10. CIT testing…………………………………………………………………………………………….39

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CHAPTER 1 INTRODUCTION
SPEC：
Network：2G/Edge 850MHz/900MHz/1800MHz/1900MHz 3G: 850/1900/2100MHz or
850/1700/1900。
Size：144*74*9mm
Bluetooth：Support BT 4.0
Wi-Fi: 802.11b, 802.11g, 802.11n
Lithium Battery: 2000mAh Inlay Li-ion Battery
USB: Micro USB 2.0
Life one M Main Function
Dual Card Dual Standby Full Touch Smartphone
Android 4.2
CPU MT 6589T four core Cortex-A7, 1.5GHz
5“ HD IPS 1280*720
Camera：12 AF Mega ,Front camera 2 Mega
BT 4.0 , WIFI :802.11b, 802.11g, 802.11n
Flash Memory:4GB+1GB
Dual SIM

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CHAPTER 3 SERVICE TOOLS
Voltage regulator
Multimeter
Iron
Hot air gun
Solder wire, soldering paste
Computer and software download cable
Metal tweezers, Screw driver etc
Pick
Driver
Tweezers
Wrist
groun
ding
Antistatic
SW
upDownlo

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CHAPTER 4 DISASSEMBLY AND ASSEMBLY
4.1 DISASSEMBLY
Remove the battery cover…….……..………………... 1
Take out the battery……………………………....…2
Remove the back cover……………………………4
Remove the keypad………………...………..5
Unscrew the 8 screws…….……………..………..3
Unscrew the 2 screws………...………….……... 6

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Remove the keypad FPC………………...……7
Remove the TP FPC……………………...……..8
Remove the FPC connector……...……………………10
Take out the PCBA.………………………...…11
Unscrew the 3 scrwes…………..………….....12
Remove the camera connector………………………….9
Take out the speaker cover………………………..13
Remove the RF coaxial line..……………………14

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Finished。。。。。。。
Remove the TP FPC….……………...……………15
Remove the speaker PCBA…………………………16
Heat the TP around use hot air gun(100 )….……….17
Open the TP with sucker….………………………..18
Remove the TP ……………………………………19

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4.2 ASSEMBLY
Install the speaker PCBA……….…………………..4
Button the TP by hand………………………..……3
Install the TP...……………………..…..………..…1
Install the LCD FPC……………………………….2
Install the FPC connector…………..…………...5
Install the RF coaxial line…………………...... 6
Install the speaker cover………………………....…7
Fasten the 3 screws…..………...………………8

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Install the camera….……...…………………11
Install the TP FPC……………………………..…12
Fasten the 2 screws...………………...……………10
Install the PCBA……....…………………... 9
Install the keypad FPC……….……..……..……13
Install the RF coaxial line………………………………14

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Finished………
Button the back cover by hand……..….………………17
Fasten the 8 screws…...……………………18
Install the back cover ….……...…………16
Install the keypad………...……………….15
Install the battery...……....…………..…19
Install the battery cover…...…….…...…………20

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CHAPTER 5 SYSTEM BLOCK DIAGRAM
5.1、PCBA A-Side
PCBA B-Side
J1201 SIM
Connector
J901
Main camera
Connector
U101 CPU
MT6589
U301
Flash
J1202
Battery
Connector
J1001 TP
Connector
J802 LCD
Connector
J1003
Earphone
Connector
J1203 I/O
Connector
U501 RF
MT6167
U605 RF PA
SKY7759X
U701
Four in one chip
MT6628
U401 PM
MT6230
U602/U604
WCDMA PA
J801 TP
Connector

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Side A layout
Side B layout

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CHAPTER 6、CIRCUIT INSTRUCTION

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CHAPTER 7 UNIT CIRCUIT PRINCIPLE INTRODUCTION
7.1 MT6589 INTRODUCTION
7.1 Baseband CPU circuit introduction for power supply
System Overview
MT6589 is a highly integrated baseband platform incorporating both modem and application processing subsystems
to
Enable 3G smart phone applications. The chip integrates a Quad-core ARM Cortex-A7 MPCore operating up
to 1.2GHz, an ARM Cortex-R4 MCU and a powerful multi-standard video accelerator. The MT6589 interfaces to
NANA flash memory, 32-bit mobile DDR or LPDDR2 for optimal performance and also supports booting from SLC
NAND or EMMC to minimize the overall BOM cost. In addition, an extensive set of interfaces and connectivity
peripherals are included to interface to cameras, touch-screen displays, MMC/SD cards and external Bluetooth,
WILAN and GPS modules.
CPU power
supply part

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7.2 Introduction for baseband chip CPU part circuit
Circuit for sensor
interrupt request
USB date
communication
Charging data
transmission
Multi-media
data
transmission
T card data
transmission
INT
Controller
LCD data
transmission
SIM data
transmission
Porwer data
transmission
USB data
transmission

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Data
transmission
mailing
address

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4.3 Four in one MT6628
Power supply
Antenna
16.369MHZ Clock
MT6628 is a 4-in-1 wireless communication device which includes
. WLAN
. Bluetooth
. GPS
. FM Transmitter and receiver
With four advanced radio technologies integrated into a single chip, MT6628 provides the best and most
convenient Connectivity functions. MT6628 implements advanced and sophisticated Radio antenna for Bluetooth
and WLAN,5GHz for WLAN and 1.575GHz for GPS).Enhanced overall quality for simultaneous voice data, and
audio/video Transmission on mobile phone and Tablet PC can be achieved. The small size with low power
consumption reduces PCB layout area the software package “Symphony”enables all advanced wireless features
on Android OS.

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4.4Power management IC MT6320
General Descriptions
MT632O is a fully integrated PMIC target for smart phone power provider. See Figure 3-1 the block
diagram for the whole picture of MT6320 PMIC

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4.5 WCDMA PA IC
Description
The SKY7775XX Power Amplifier Module (PAM) is a fully matched 10-pad surface mount module developed for
Wideband Code Division Multiple Access (WCDMA) applications, This small and efficient module packs full
1920-1980 MHz bandwidth coverage into a single compact package. Because of high efficiencies stained
throughout the entire power range, the SKY7776X delivers unsurpassed talk-time advantages. The SKY7776X
meets the stringent spectral linearity requirements of High Speed Downlink Packet Access(HSDPA).High Speed
Uplink Access (HSUPA),and long Term Evolution (LTE)data transmission with high power added efficiency. An
integrated directional coupler eliminates the need for any external coupler.

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SKY7775XX POWER AMPLIFIER MODULE FOR
CDMA/WCDMA/HSDPA/HSUPA/HSPA+/LTE- DAND