Blu STUDIO 5.0 CE Service Manual
  1. Manuals
  2. Brands
  3. Blu Manuals
  4. Cell Phone
  5. STUDIO 5.0CE
  6. Service manual

Blu STUDIO 5.0 CE Service Manual

Hide thumbs Also See for STUDIO 5.0 CE:
Table of Contents

Advertisement

Quick Links

See also: User Manual
BLU STUDIO 5.0 CE
SERVICE MANUAL
1 / 40

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the STUDIO 5.0 CE and is the answer not in the manual?

Questions and answers

Related Manuals for Blu STUDIO 5.0 CE

Summary of Contents for Blu STUDIO 5.0 CE

  • Page 1 BLU STUDIO 5.0 CE SERVICE MANUAL 1 / 40...
  • Page 2 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: Chapter 1 Introduction

    CHAPTER 1 INTRODUCTION Main Function Dual Card Full Touch Smartphone OS4.4 CPU MT 6571 (1.3GHz Dual core) 5 " FWVGA480*854 Back camera 3.2M FF，Mega, Compatible2 MP， Front camera 0.3 Mega WIFI: 802.11n, 802.11g, 802.11b 4GB+512MB Compatible512M+256MB SPEC： Dual SIM Network：GSM Band: 850MHz/900MHz/1800MHz/1900MHz Size：...

  • Page 4: Chapter 2 Service Tools

    CHAPTER 2 SERVICE TOOLS Iron Hot air gun Voltage regulator Multimeter Solder wire, soldering paste Tweezers Driver upDownlo ad cable Wrist groun ding strap Pick Antistatic gloves Computer and software download cable Metal tweezers, Screw driver etc.. 4 / 40...

  • Page 5: Chapter 3 Disassembly And Assembly

    CHAPTER 3 DISASSEMBLY AND ASSEMBLY DISASSEMBLY Unfasten the 11 screws…….…………..…2 Remove the Battery cover…….……..………………... 1 Remove the back cover….……………..………..3 Remove the vibrator………………………4 Remove the TP FPC…..………...………..5 Take out the camera..…………….……... 6 5 / 40...
  • Page 6 Remove the speaker FPC…………………....……..8 Remove the LCD FPC……………......……7 Take out the PCBA…………………......……..9 Remove the speaker FPC by iron..……………..…..10 Take out the receiver..………………………………..…..11 Take out the light sensation seal rubber…………….12 Remove the TP by port…………………………………..….14 Use heat gun to heat aound the TP 200°C……….13 6 / 40...
  • Page 7 Stick the protection film onto LCD……………………..15 Stick the protection film onto TP……………………….16 Take out the LCD…………………………………………….….17 Finished。 。 。 。 。 。 。 7 / 40...
  • Page 8 ASSEMBLY Remove the protection film………….……………………….2 Install the LCD..…..……….……………………………………..…1 Install the TP……………..……………………………….………..4 Remove the protection film……..………………..……3 Install the receiver…………………………………….……..6 Impact the LCD………………………………………….………...5 8 / 40...
  • Page 9 Install the Light sensation seal rubber……………..7 Solder the speaker FPC……………………………………..8 Install the PCBA………………………………………………..9 Install the speaker FPC……………………………………..10 Install theTP FPC……………………………………………..12 Install the LCD FPC…..........11 9 / 40...
  • Page 10 Install the camera …..........13 Solder the vibrator by iron …......... 14 Install the back cover…........15 Fasten the 11 screws…........... 16 Install the battery cover…………………………………..17 Finished…… 10 / 40...

  • Page 11: Chapter 4 System Block Diagram

    CHAPTER 4 SYSTEM BLOCK DIAGRAM 4.1、PCBA A-Side J1003 Earphone connector. J1203 I/O Connector bug by damaged. bug by damaged No charge in, U701 BT/WIFI/FM/GPS Earphone no sound Cannot upgrade Software IC. Buy by damaged. BT/WIFI/FM/GPS Not work U101 CPU Bug by damaged Cannot power on.
  • Page 12 PCBA-B-Side J802 TP Connector Bug by damaged. TP not work. J901 Camera connector Bug by damaged. Can’t take photos. J1201 J1202 SIM J1204 T-Flash connector connector Bug by damaged. Bug by damaged. Can't Access T-Flash Cannot the SIM card. Card. J801 LCD Connector Bug by damaged.
  • Page 13 4.2:Side A layout 13 / 40...
  • Page 14 Side B layout 14 / 40...
  • Page 15 CHAPTER 5 CIRCUIT INSTRUCTION 15 / 40...
  • Page 16 CHAPTER 6 UNIT CIRCUIT PRINCIPLE INTRODUCTION 6.1 Studio Ce INTRODUCTION System Overview Studio Ce is a highly integrated baseband platform incorporating both modem and application processing subsystems to enable 3G smart phone applications, with integrated Bluetooth, WILAN ○ and GPS modules. The chip integrates a Dual-core ARM R cortex-A7 MPcore operating up to 1.2Ghz,an ARM Cortx-R4 MCU and a powerful multi-Standard Video accelerator.
  • Page 17 6.1.1: Introduction for baseband chip CPU part circuit Base station interface RF TX Control Camera Control 17 / 40...
  • Page 18 18 / 40...

  • Page 19: General Descriptions

    6.2 Power management IC MT6323 General Descriptions MT6323 is a power management system chip optimized for 2G/3G handsets and smart phones, especially based on the Mt6572 system solution. MT6323 contains 3 buck converters and 24 LDOs, which are optimized for specific 2G/3G/smart phone subsystems.
  • Page 20 20 / 40...
  • Page 21 6.3 System Overview The MT6166 is a RF transceiver targeted at high speed 2G/3G-FDD/TDD multi-mode smart phone and tablet computers implanted in 40nm CMOS. The RF transceiver function is fully integrated. This document briefly introduces the RF macros in MT6166. 21 / 40...
  • Page 22 6.4: RF -MT6166 6.5 I/O connector (5PIN) 22 / 40...
  • Page 23 6.6 Four in one chip MT6627 MT6627 is a 4-in-1 connectivity chip which contains a WIFI/Bluetooth Transceiver, a GPS receiver, and a FM receiver front-ends, along with integrated passive device(IPD) in a QFN40 package. Simplified block diagram and how MT6627 connects to a companion modem is shown in Figure 1. In Figure 1, RF input/output are, respectively. An always on low-dropout regulator (ALDO) provides supply voltage to top control logics in MT6627.The top control logics can control each subsystem independently.
  • Page 24 6.7: Four in one MT6627 24 / 40...
  • Page 25 SKY7775XX POWER AMPLIFIER MODULE FOR CDMA/WCDMA/HSDPA/HSUPA/HSPA+/LTE- DAND 25 / 40...

  • Page 26: Chapter 6 Troubleshooting

    CHAPTER 6 TROUBLESHOOTING CANNOT POWER ON-CURRENT SWING INSTABILITY Cannot power on Upgrade the software Check the power manage supply output： Replace or VIO 18 Check and re-weld DVDD 2.8V replace the I/O power VIO 28 connector manage IC VTCXO 2.8V VEMC 3.3V VRTC 1.2V 26MHZ&32.768KHZ...
  • Page 27 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 Check and replace...
  • Page 28 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 29 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 re-weld the LCD connector Change LCD connector can settle the defect issue? Upgrade software Change the LCD can...

  • Page 30: Insert Sim

    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 re-weld the SIM connector Check FPC on SIM connector is OK or not Replace FPC Replace SIM card Upgrade software...
  • Page 31 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 IC to see if there’s any signal Replace RF PA...
  • Page 32 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 Turn on the speaker, measure the wave signal by oscillograph Replace power IC or MT6572...
  • Page 33 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 damaged. Re-solder or clean the receiver connector. Measure the signal with oscillograph under calling mode Re-solder or replace power IC is ok or not.
  • Page 34 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 Measure C1124、C1125...

  • Page 35: Microphone Circuit

    Microphone circuit Main related component: BBIC(U101),power IC(U401),microphone To microphone From power IC 35 / 40...
  • Page 36 DOES NOT CHARGE – NO CHARGE IN No charge Change battery Check charger and cable without problem, or change good one Upgrade the software 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 is ok or not?
  • Page 37 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 Measure if there is pin...
  • Page 38 T-Flash connector circuit Main related component: BBIC(U101),T-Flash connector(J1203) T-Flash connector From BBIC 38 / 40 WIFI、BT、FM 、GPS DEFECT REPAIR FLOW CHART...
  • Page 39 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 29#.33#.36#40# pin have 1.8V, 3.3BVsupply voltage or Check power IC have VBATT V supply voltage or not Replace U701 Check U701 10pin have 32KHZ clock signal...
  • Page 40 WIFI&BT& control line From BBIC WIFI&BT RX/TX (From BBIC) WIFI&BT MF control line From BBIC GPS IQ RX From BBIC GPS ANT FM ANT From Earphone connector 40 / 40...

Table of Contents