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Blu Aria Service Manual
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Blu Aria Service Manual

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BLU Aria
Service Manual
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Summary of Contents for Blu Aria

  • Page 1 BLU Aria Service Manual...
  • Page 2 ATTENTION Boards, which contain Electrostatic Sensitive Device(ESD), art indicated. Following information is ESD handling: Service personnel should ground themselves by using a wrist strap when exchange system boards. When repairs are made to a system board, they should spread the floor with anti-static mat which is also grounded. Use a suitable, grounded soldering iron.
  • Page 3 BLU management team any copying or distribution to third party are not allowed. Without the approval of BLU, publishing, distribution, copy, save or transfer of this or part of this document are not allowed. BLU reserves the right of modifying or updating for this document without notification and BLU has the final power of interpretation.
  • Page 4 Chapter 1 Specification Aria(B1080B) Features & Functions  Dual SIM  Fashion bar phone  Wireless FM  Moner detector flash  Multi-Media application  0.08M sw upgarde to 0.3M by sw (option)  T-Flash（Support 8G T Card）  1.77“TFT 128*160 ...

  • Page 5: Exploded View

    Chapter 2 Exploded View 1. Lens 3. Receiver 4. Front cover 5. FM antenna 7. LCD 9. PCBA 11. Speaker 13 Back cover 18 Battery 19 Camera 21 DOME 22 Keypad...

  • Page 6: Tools

    Chapter 3 Tools Solder iron Hot Air Gun Power Supply Multimeter Solder wire, Flux Tweezer Screw Driver Cable Wrist grounding strap Pick Antistatic gloves PC, Download cable Others...

  • Page 7: Assembly

    Chapter 4 Disassembly & Assembly 1. Disassembly Process 1. Remove the battery cover 2. Unfasten the 4 screws by screw driver 3. Prize up the back cover by pick 4. Remove the PCBA .. 5. Stick protection film for front cover. 6.
  • Page 8 2. Assembly Process 2. Remove the protection film.. 1. Remove the protection film. 4. Install the rear cover module. 3. Install the PCBA on the front cover.. 5. Fasten the 4 screws. 6. Install the back cover. Finished.
  • Page 9 Chapter 5 Picture of PCBA 5.1 Side A PCBA (Side A) Location of components Side A Keypad Connector Camera connector LCD connector 5.2 Side B Side B PCBA (Side B) Location of Components J301 J503 SIM U501 D601 Light T-flash connector connector 26MHZ Emitting diodes...
  • Page 10 5.3 PCBA Layout side A 5.4 PCB Layout Side B...

  • Page 11: System Block Chart

    Chapter 6 System Block Chart...
  • Page 12 Chapter 7 Unit Circuit 7.1.1 System Overview MT6250 is a GSM/GPRS handset chip solution which integrates RF,analog baseband,digital baseband as well as Power Management Unit(PMU) and can greatly reduce the component count and make a smaller PCB size MT6250 including Bluetooch and FM. Besides,MT6250 is capable of Single Antenna Interference Cancellation (SAIC) and AMR speech.
  • Page 13 Chapter 7 Unit Circuit 7.1.2 Baseband & CPU MT6250 Audio circuit CAMERA Data transportation Keypad control side connector circuit BT Data transportation Data control side transportation circuit...
  • Page 14 7.1.2 Baseband – Keypad 7.1.3 Clock 32.768KHZ Circuit Clock signal transportation side 32.768 khz Clock crystal MT6250...
  • Page 15 7.1.4 CPU to Flash FLASH data transportation side 7.1.5 SIM data output MT6250 SIM 2 Clock SIM 2 Data SIM 1 Clock SIM 1 Data SIM 1 reset SIM 2 reset...
  • Page 16 7.2 MT6250 CPU Power output item voitage current Vcore 1.2v 200ma 2.8v 100ma Vadd 2.8v 150ma Vtcxo 2.8v 20ma Vrtc 1.2v 200ma Vmem 2.8v 150ma Vsim 2.8v 20ma 2.8v 200ma 1.8v 150ma 7.3 Battery connector Positive pole Temperature detection...
  • Page 17 7.4 I/O Interface (5PIN) Charge input Data transpo rtation...
  • Page 18 7.4 System Overview The SKY77542 is a dual-band transmit and receive front-end module(FEM) with lntegrated power Amplifier control(iPAC) for cellular handsets comprising GSM850 and DCS1900 operation. The FEM has capability in applications of US and euro dual-band platforms.Designed in a low profile, compact form factor, the SKY77542 offers a complete Transmit VCO-to-Antenna and Antenna-to-receive SAW filter solution.
  • Page 19 7.4 power amplifier frequency Start Power input antennal RF DC SKY77542 Signal AC 7.5 SIM circuit SIM 1Clock SIM 1 power SIM 1 Data SIM 1 reset SIM 2 Clock, reset SIM 2 power SIM 2 Data...

  • Page 20: Trouble Shooting Guide

    Chapter 8 Trouble shooting guide Can’t Download Cannot download Check if it is caused by the Power on PC, cable, tools etc. Replace or re-config. Replace or Check I/O Connector re-solder the I/O connector Connect the cable, check if Disconnect the cable the current is normal (about and check if the chipset 30 mA)
  • Page 21 Cannot power on-current swing instability Make the phone connect the power supply and find the current swing at 50-100mA Upgrade the software Check and replace the I/O connector Check the power manage supply output： VCCRE 1.8V VDD 2.8V Replace or AVDD 2.8V reweld CPU VTCXO 2.8V...
  • Page 22 Cannot power on-low or no current Make the phone connect the power supply and find low or no current Check battery ， Clean connector and power reweld replace it Upgrade the software Check and replace I/O Check the power manage connector supply output：...
  • Page 23 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 Check and touch replace RF method to PA, Audio Check if the capacitance, varistor, LDO tube leakage...
  • Page 24 Repair flow for phone dead Phone dead Upgrade the software can Upgrade the settle the defect issue? Software. Check battery connector Clean or replace the battery and battery touch point if or battery connector. is dropped or dirty? Check the keypad if stuck or Check and reinstall the keypad touch panel do not work to or replace the touch panel.
  • Page 25 No display or display abnormality No display or display abnormality after power on Check LCD if damage Change LCD or liquid flow out Check LCD Clean/re-solder connector is OK or connector Change LCD FPC Problem solve Upgrade software Check if 13 PIN of J701 have signal or not, check 8 digit cable status...
  • Page 26 Test process for Key can’t work Key can’t work All key can’t Some of key can’t work Single key can’t work (e.g: 1/2/3, regular problem) work Clean it Upgrade software Use multimeter to check if to check if can the voltage is 0.7V or not solve this problem Visual check if any corrosion or short Clean the place...
  • Page 27 Key light can’t work Key light can’t work Reassemble FPC Expect bar model Use multimeter to check Check if circuit is voltage of LED is OK or not broken Upgrade software Problem solve 软件升级 Use external power (2.8V) to Change LED check LED can work or not Changed or re-solder CPU MT6250 Problem solve...
  • Page 28 Insert SIM Repair Process Insert SIM Clean or replace Check if all the SIM connector. SIM pins are clean Resolved If SIM card Replace SIM card is available CPU MT6250 Connect Power supply may be defective to check the current MT6250 may be defective Resolder or replace...
  • Page 29 N0/weak signal trouble shooing No or weak signal Inspect the antenna and Replace the defective antenna connector to see components. if there’s any distortion Put a false antenna at RF PA Replace RF PA IC. IC to see if there’s any signal Make a false antenna at Saw filter is damaged, Z501, check if there’s...
  • Page 30 No/Low sound from Speaker No sound or noise Remove the speaker and Press power on and side button to measure with multimeter to check if there’s the ring is normal see if there’s any sound. Set the phone as The phone is in Replace speaker.
  • Page 31 Receiver low voice or no voice Receiver is low. Set the phone as Check if LS401 hands free mode is damaged. Resolder clean LS401 Check if the receiver Replace the is broken or damaged receiver. Test if there’s sound from Replace receiver receiver with multimeter Measure the signal...
  • Page 32 No/Low sound from MIC No/Low sound from MIC Check if there’s Install the MIC cover MIC cover *#84666*# and activate echo loop, measure MIC MK400 Replace MIC voltage is 1.5V、0.7V Replace B401 or B402 Check if inductor B401、 B402 is damaged. Measure C431\C432 with Replace multimeter to see if there’s...
  • Page 33 Does not charge – remind error charge Remind error during charge Remind: “fault connection” “battery overheat” Change battery Re-flash SW Check battery connector testing Pin, if the bias resis and vatge be normal. Check capacitor C251、resistor R214\R205 be normal Replace Check charge protective tube re-solder U200 be normal.
  • Page 34 Does not charge – no charge No charge Change battery Re-flash SW Check charger and cable without problem, or change good one Check if I/O connector works normal Connect the charger without battery put in, check if the voltage of positive pole is around 3.6V. Replace Check charge protective tube be re-solder...
  • Page 35 Does not charge – does not recognize charging If recognize “charger connected” There is no symbol shows charging Re-solder or replace Power on and connect charger, input *#84666*# to check if connector ADC is around 0.40A Change battery Re-flash SW Connect the charger without battery put in, check if the voltage of positive pole is around 3.6V.
  • Page 36 Stand-by short time Stand-by short time Change battery Re-flash SW Connect the phone with Voltage regulator, the current should be zero Power on the phone, check the if working current be By touch to Check and normal（no exceed 600mA） find the replace component RF- PA,...
  • Page 37 Can’t read T-Flash card Can’t read T-Flash card Check if T-Flash Replaced the slot appearance T-Flash slot was ok? Measure if Re-solder T-Flash slot pin 4 T-flash slot VMC was 2.8V. Check if the voltage of T-Flash Measure if there is pin pin3/pin5/pin7 to the ground was around short for the T-flash 0.7V with multimeter diode column...
  • Page 38 Can’t successfully take picture Can’t successfully take pictures. Re-install the camera and check if it can work well. Power on the PCBA and Upgrade SW to check if open the camera function, it was related to SW. Check if C606、C608 have 2.7V or 1.5V voltage Check if camera slot Re-solder or replace...
  • Page 39 Chapter 9 Firmware Upgrading Guide 9.1 Firmware Upgrading 9.1.1 Install USB driver The maximum downloading speed can be up to 921600bit/s when using USB-Serial cable. The driver need to be installed before using the USB cable. Please keep the USB cable unplugged when installing the driver. Plug the USB cable when installing is completed.
  • Page 40 9.1.4 Select “Options”-“Format FAT (DISABLED)…” and please do NOT select “validation”. 9.1.5 Please select “Format FAT”. Select “Format FAT”...
  • Page 41 9.1.6 Select “Options”- “Backup and Restore”, then select the “Backup -> Download/format -> Restore”. 9.1.7 Click the ”Download Agent” and select the file “MTK-ALLInOne-DA.bin”. Select this one...
  • Page 42 9.1.8 Click the “Scatter/config file” and select the “scat36_11A_GEMINI.txt”. Select this one 9.1.9 Power off the handset, remove the battery, click “Download”, and connect the cable with handset, then insert the battery, press the power on button, the gray, red, blue, green and gray progress bar shall appear. Then upgrade would be completed when appear “OK”.
  • Page 43 9.1.10 Backup the data. (gray progress bar) 9.1.11 Connect to phone. (red progress bar)
  • Page 44 9.1.12 Downloading is in process. (blue progress bar) 9.1.13 Downloading is completed.
  • Page 45 9.1.14 Power on phone and input “*#84666*#”, select “one key Restore”, phone will be reboot, then the user’s setting could be eliminated entirely. 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 46 图 1(figure 1) Description: E930 can’t power on (handset is dead when upgrade software.)details as figure 2. Root cause: the power supply and clock both work on as common during upgrade software. The typical defective issue as poor soldering or go to fall, other way as exchange CPU or Flash.

  • Page 47: Cit Testing

    Chapter 10 CIT Testing Input “*#84666*#” in the standby mode. 1. Version: Confirm the firmware version. 2. Echo Loop: Receiver shall produce sound when blowing over the mic. 3. Keypad: Press every button on the handset until the screen is clear. 4.

This manual is also suitable for:

B1080b