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Blu LIFE ONE M Service Manual

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Customer Service
Service Manual
LIFE ONE M SERVICE MANUAL
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Summary of Contents for Blu LIFE ONE M

  • Page 1 Customer Service Service Manual LIFE ONE M SERVICE MANUAL 1 / 39...
  • Page 2 Customer Service Service Manual 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.
  • Page 3 Customer Service Service Manual CHAPTER 1 INTRODUCTION Life one M Main Function Dual Card Dual Standby Full Touch Smartphone Android 4.2 four core Cortex-A7, 1.5GHz CPU MT 6589T 5“ HD IPS 1280*720 Camera： 12 AF Mega ,Front camera 2 Mega BT 4.0 , WIFI :802.11b, 802.11g, 802.11n...
  • Page 4 Customer Service Service Manual CHAPTER 3 SERVICE TOOLS Iron Hot air gun Voltage regulator Multimeter Solder wire, soldering paste Tweezers Driver upDownlo Wrist groun ding Pick Antistatic Computer and software download cable Metal tweezers, Screw driver etc 4 / 39...
  • Page 5 Customer Service Service Manual CHAPTER 4 DISASSEMBLY AND ASSEMBLY DISASSEMBLY Take out the battery……………………………..…2 Remove the battery cover…….……..………………... 1 Unscrew the 8 screws…….……………..………..3 Remove the back cover……………………………4 Remove the keypad………………...………..5 Unscrew the 2 screws………...………….……... 6 5 / 39...
  • Page 6 Customer Service Service Manual Remove the keypad FPC………………...……7 Remove the TP FPC……………………...……..8 Remove the camera connector………………………….9 Remove the FPC connector……...……………………10 Take out the PCBA.………………………...…11 Unscrew the 3 scrwes…………..…………..12 6 / 39 Take out the speaker cover………………………..13 Remove the RF coaxial line..……………………14...
  • Page 7 Customer Service Service Manual 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 Finished。 。 。 。 。 。 。 7 / 39...
  • Page 8 Customer Service Service Manual ASSEMBLY Install the TP...……………………..…..………..…1 Install the LCD FPC……………………………….2 speaker PCBA Button the TP by hand………………………..……3 Install the ……….…………………..4 Install the RF coaxial line…………………..6 Install the FPC connector…………..…………...5 8 / 39 Install the speaker cover………………………..…7 Fasten the 3 screws…..………...………………8...
  • Page 9 Customer Service Service Manual Fasten the 2 screws...………………...……………10 Install the PCBA……... …………………... 9 Install the camera….……...…………………11 Install the TP FPC……………………………..…12 Install the keypad FPC……….……..……..……13 Install the RF coaxial line………………………………14 9 / 39...
  • Page 10 Customer Service Service Manual Install the keypad………...……………….15 Install the back cover ….……...…………16 Button the back cover by hand……..….………………17 Fasten the 8 screws…...……………………18 Install the battery...……..…………..…19 Install the battery cover…...…….…...…………20 Finished……… 10 / 39...
  • Page 11 Customer Service Service Manual CHAPTER 5 SYSTEM BLOCK DIAGRAM 5.1、PCBA A-Side J901 Main camera J801 TP Connector Connector U701 Four in one chip U501 RF MT6628 MT6167 J1201 SIM U602/U604 Connector WCDMA PA J802 LCD Connector U605 RF PA J1001 TP SKY7759X Connector U401 PM...
  • Page 12 Customer Service Service Manual Side A layout Side B layout 12 / 39...
  • Page 13 Customer Service Service Manual CHAPTER 6、CIRCUIT INSTRUCTION 13 / 39...
  • Page 14 Customer Service Service Manual CHAPTER 7 UNIT CIRCUIT PRINCIPLE INTRODUCTION 7.1 MT6589 INTRODUCTION System Overview MT6589 is a highly integrated baseband platform incorporating both modem and application processing subsystems 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.
  • Page 15 Customer Service Service Manual 7.2 Introduction for baseband chip CPU part circuit Circuit for sensor interrupt request USB data transmission USB date communication Multi-media data transmission Porwer data transmission Charging data transmission SIM data transmission card data transmission Controller LCD data transmission 15 / 39...
  • Page 16 Customer Service Service Manual Data transmission mailing address 16 / 39...
  • Page 17 Customer Service Service Manual Four in one MT6628 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.

  • Page 18: General Descriptions

    Customer Service Service Manual Power 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 18 / 39...
  • Page 19 Customer Service Service Manual 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.
  • Page 20 Customer Service Service Manual SKY7775XX POWER AMPLIFIER MODULE FOR CDMA/WCDMA/HSDPA/HSUPA/HSPA+/LTE- DAND 20 / 39...
  • Page 21 Customer Service Service Manual CHAPTER 8TROUBLESHOOTING CANNOT POWER ON-CURRENT SWING INSTABILITY Cannot power on Upgrade the software Check the power manage supply output： Replace or VCCRE 1.8V Check and reweld VDD 2.8V replace the I/O power AVDD 2.8V connector manage IC VTCXO 2.8V VMEM 2.8V VRTC 1.2V...
  • Page 22 Customer Service Service Manual CANNOT POWER ON-LARGE CURRENT Make the phone connect the power supply and then press power key find large current make the phone heat Check if the phone leakage (current 0mA is normal) Use the touch method to check and replace the heat spare parts Check and...
  • Page 23 Customer Service Service Manual REPAIR FLOW FOR PHONE DEAD Phone dead Upgrade the software can settle the defect issue? Check battery connector and battery touch point if is dropped or dirty? Clean or replace the battery or battery connector. Check the keypad if stuck or touch panel do not work to make the phone “dead”? Check and reinstall...
  • Page 24 Customer Service Service Manual NO DISPLAY OR DISPLAY ABNORMALITY No display or display abnormality after power on Check LCD if damage or liquid flow out Change LCD Check LCD connector is OK or not Clean or reweld the LCD connector Change LCD connector can settle the defect issue?
  • Page 25 Customer Service Service Manual INSERT SIM REPAIR PROCESS Insert SIM Check if all the SIM pins are clean Clean or replace SIM connector. Check SIM connector is OK or not Clean or reweld the SIM connector Check FPC on SIM connector is OK or not Replace FPC Replace SIM card...
  • Page 26 Customer Service Service Manual N0/WEAK SIGNAL TROUBLE SHOOING No or weak signal Inspect the antenna and antenna connector to see if there’s any distortion Replace the defective components. Check and replace RF coaxial line to see if there’s any signal . Replace RF coaxial line Put a false antenna at RF PA...
  • Page 27 Customer Service Service Manual NO/LOW SOUND FROM SPEAKER No sound or noise Remove the speaker and measure with multimeter to see if there’s any sound. The phone is in Silent mode. Replace speaker. Set the phone as normal mode Check and replace FPC is ok or not.
  • Page 28 Customer Service Service Manual RECEIVER LOW VOICE OR NO VOICE Receiver is low. Check if the receiver is broken or damaged Replace the receiver . Check if receiver connector is Resolder or clean the receiver connector. Measure the signal with oscillograph under calling mode Resolder or replace power IC is ok or not.
  • Page 29 Customer Service Service Manual NO/LOW SOUND FROM MIC No/Low sound from Check if there’s MIC cover Install the MIC cover. Press power on and side button to test mode and activate echo loop, measure MIC voltage is 1.5V、0.7V Replace the MIC Replace FPC to check if the problem is solved Replace the...
  • Page 30 Customer Service Service Manual DOES NOT CHARGE – NO CHARGE IN No charge Change battery Check charger and cable without problem, or change good one Upgrade the Check if I/O connector works normal Re-solder or replace the I/O connector Check and replace FPC is ok or not? Replace the FPC Replace the charge IC...
  • Page 31 Customer Service Service Manual CAN’T READ T-FLASH CARD Can’t read T-Flash card Check if T-Flash slot appearance was ok? Replaced the T-Flash slot Measure if T-Flash slot pin 4 VMC was 2.8V. Re-solder or replace Power IC Check if the voltage of T-Flash pin3/pin5/pin7 to the ground was around 0.7V with multimeter diode column...
  • Page 32 Customer Service Service Manual WIFI、BT、FM 、GPS DEFECT REPAIR FLOW CHART WIFI can’t open， Can’t work normal Software update and check the function is OK or not Software update Check 4 in 1 IC L12 pin have 3.7V +B supply voltage or not Check C901 have VBATT V supply voltage or not Replace U901...
  • Page 33 Customer Service Service Manual Chapter 9 Firmware Upgrading Guide Firmware Upgrading 1. Install USB driver The maximum downloading speed can be up to 921600bit/s when using USB-Serial cable. The driver needs to be installed before using the USB cable. 1> computer eject hardware installation instruction and choose following item and then click’’next step’’ Choose next step 2>...
  • Page 34 Customer Service Service Manual 3> USB driver is installing. Choose driver 4> click’’ finished’’ as below. Click here 34 / 39...
  • Page 35 Customer Service Service Manual 2>. Software upgrade 1> Open software upgrading platform’’ SP_Flash_Tool_v3.1304.0.119 2> Choose ’’USB mode’’ 3>choose’’ speed’’===>’’Do Not Switch speed’’ 35 / 39...
  • Page 36 Customer Service Service Manual 4>choose’’Scatter-loading File’’ Choose Scatter loading 5>Click ‘Scatter-loading’’ to choose file’’MT6577_Android_scatter.emmc.txt’’ Choose this 36 / 39...
  • Page 37 Customer Service Service Manual 6> the software is upgrading. Choose Download 7> Finished. 37 / 39...
  • Page 38 Customer Service Service Manual 8>: Description: can’t power on (also upgrade software fail) Root cause: red scroll 100% run completely when upgrade software, the detail as figure 1, also it prove power supply, clock is normal and defective typical issue is focus on CPU or FLASH poor soldering or damage, and maybe software do not fit for hardware.
  • Page 39 Customer Service Service Manual CHAPTER 10 CIT TEST 1.Insert T-Flash card and SIM card , Press power on and by side button at the meantime to enter factory mode for CIT test.. 2. Choose Full test menu. to do full test. 3.