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Blu Diva X Service Manual

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BLU Diva X
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  • Page 1 BLU Diva X 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: Table Of Contents

    Diva X Service Manual Content 1. Product Specification….…………………………………………………………………………………...3 2. Exploded View………………………………………………………………………………………………4 3. Tools………………………………………………………………………………………………………….5 4. Assemble & Dissemble Disassembly....………………………………………………………………………....7 Assembly……………………………………………………………………………………….…………8 5. Picture of main board A&B side of PCBA .…………….…………………………………………………….……………….10 A&B of PCBA Layout………….….………….…………………………….………………….………..11 6. System Block Chart……………………………………………………………………………………..12 7.

  • Page 4: Product Specification

    Diva X Service Manual Chapter 1 Product Specification Diva X Features & Functions Dual SIM Dual Standby Single Connection -Fashion bar phone -BT 3.0 -FM Radio -Multi-Media application -T-Flash (Support 8G SD-Card) -QVGA240*320 –0.3 Mega-H /1.3 Mega-S -MP3, Midi, Amr, Wav -USB2.0 Mini USB...

  • Page 5: Exploded View

    Diva X Service Manual Chapter 2 Exploded View 1. Main Lens film 2. Main Lens 3. Main Lens glue 4. Receiver filter 5. Front cover 6. LCD sponge 7. LCD 8.LCD gobo 9. Receiver 10. VIB Glue 11.Vibrator 12. Camera Glue 13.

  • Page 6: Tools

    Diva X Service Manual 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: Disassembly

    Chapter 4 Disassembly & Assembly 4.1 Disassemble...
  • Page 8 Finished.
  • Page 9 Diva X Service Manual Chapter 5 Picture of PCBA 5.1 Side A PCBA (Side A) Location of components J701 LCD U301 Connector Flash IC U501 26Mhz Crystal U101 CPU U502 RF PA MT6250 5.2 Side B Side B PCBA (Side B) Location of Components...

  • Page 10: A&B Of Pcba Layout

    Diva X Service Manual 5.3 PCBA Layout side A 5.4 PCB Layout Side B...

  • Page 11: System Block Chart

    Diva X Service Manual Chapter 6 System Block Chart MT6250...

  • Page 12: Unit Circuit Map

    Diva X Service Manual 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 Bluetooth and FM. Besides, MT6250 is capable of...
  • Page 13 Diva X Service Manual 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 Diva X Service Manual 7.1.3 Baseband - Keypad 7.1.4 Clock 32.768KHZ Circuit Clock signal transportation side 32.768 khz Clock crystal MT6250...
  • Page 15 Diva X Service Manual 7.1.5 CPU to Flash FLASH data transportation side 7.1.6 SIM data output MT6250 SIM 2 Clock SIM 2 Data SIM 1 Clock SIM 1 Data SIM 1 reset SIM 2 reset...
  • Page 16 Diva X Service Manual 7.2 MT6250 CPU Power output item voltage 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...
  • Page 17 Diva X Service Manual 7.4 I/O Interface (5 PIN) Charging input Data download 7.5.1 System The SKY7756X is a dual-band transmit and receive front-end module(FEM) with integrated power Amplifier control (iPAC) for cellular handsets comprising GSM900 and DCS1800 operation. The FEM has capability in applications of U S and euro dual-band platforms.
  • Page 18 Diva X Service Manual SKY7756X 7.5.2 power amplifier frequency Start Power input antennal RF DC SKY7756X Signal AC...
  • Page 19 Diva X Service Manual 7.6 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

    Diva X Service Manual Chapter 8 Trouble shooting guide Can’t Download Cannot download Check if it is caused by the PC, cable, tools etc. Power on Replace or re-config. Replace or Check I/O Connector re-solder the I/O connector Connect the cable, check if...
  • Page 21 Diva X Service Manual Cannot power on-current swing instability Make the phone connect the power supply and find the current swing at Upgrade the Check and replace the I/O connector Check the power manage supply output： VCCRE 1.8V VDD 2.8V AVDD 2.8V...
  • Page 22 Diva X Service Manual Cannot power on-low or no current Make the phone connect the power supply and find low or no Check the battery Clean ， connector and power reweld Upgrade the software Check and replace I/O Check the power manage supply output：...
  • Page 23 Diva X 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 Check and...
  • Page 24 Diva X Service Manual Repair flow for phone dead Phone dead Upgrade the Upgrade the software can 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?
  • Page 25 Diva X Service Manual No display or display abnormality No display or display abnormality after power on Check LCD if damage or Change LCD liquid flow out Check LCD connector Clean/re-solder is OK or not connector Change LCD FPC Problem solve...
  • Page 26 Diva X Service Manual Test process for Key can’t work Key can’t work Single key can’t All key can’t Some of key can’t work 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...
  • Page 27 Diva X Service Manual 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 Use external power (2.8V) to...
  • Page 28 Diva X Service Manual 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...
  • Page 29 Diva X Service Manual 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...
  • Page 30 Diva X Service Manual 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 Diva X Service Manual Receiver low voice or no voice Receiver is low. Set the phone as Check if LS402 handsfree mode is damaged. Resolder clean LS402 Check if the receiver Replace the is broken or damaged receiver. Test if there’s sound from...
  • Page 32 Diva X Service Manual 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 Check if inductor B411、 Replace B411 or B402 B402 is damaged.
  • Page 33 Diva X Service Manual 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...
  • Page 34 Diva X Service Manual 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.
  • Page 35 Diva X Service Manual 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...
  • Page 36 Diva X Service Manual 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）...
  • Page 37 Diva X Service Manual 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? Re-solder Measure if T-flash slot T-Flash slot pin 4 VMC was 2.8V. Measure if there is pin...
  • Page 38 Diva X Service Manual 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.
  • Page 39 Diva X Service Manual 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.
  • Page 40 Diva X Service Manual 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 Diva X Service Manual 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 Diva X Service Manual 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...
  • Page 43 Diva X Service Manual 9.1.10 Backup the data. (gray progress bar) 9.1.11 Connect to phone. (red progress bar)
  • Page 44 Diva X Service Manual 9.1.12 Downloading is in process. (blue progress bar) 9.1.13 Downloading is completed. 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.
  • Page 45 Diva X Service Manual 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: Cit Testing

    Diva X Service Manual 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.

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