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Micromax A069 Service Manual
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Micromax A069 Service Manual

Micromax a069 smartphone
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A069
L2 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.
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.

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Summary of Contents for Micromax A069

  • Page 1 A069 L2 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.

  • Page 2: Main Function

    A069 L2 Service Manual Main Function Dual Card Full Touch Smartphone Android 4.2 CPU MT 6572 (1.3GHz Dual core) 5 " FWVGA480*854 Camera：Back camera 5 FF Mega, Front camera 0.3 Mega WIFI: 802.11n, 802.11g, 802.11b 4GB+512MB SPEC： Dual SIM Network：2G: 850MHz/900MHz/1800MHz/1900MHz Size：...

  • Page 3: Service Tools

    A069 L2 Service Manual 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...

  • Page 4: Chapter 4.System Block Diagram

    A069 L2 Service Manual CHAPTER 4.SYSTEM BLOCK DIAGRAM 4.1、PCBA A-Side J1003 Earphone J1203 I/O Connector connector. bug by bug by damaged No charge U701 damaged. in, Cannot upgrade Software BT/WIFI/FM/GPS IC. Earphone no sound Buy by damaged. BT/WIFI/FM/GPS Not U101 CPU Bug by...
  • Page 5 A069 L2 Service Manual 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. Cannot the SIM card.
  • Page 6 A069 L2 Service Manual 4.2:Side A layout...
  • Page 7 A069 L2 Service Manual Side B layout...

  • Page 8: Chapter 6 Troubleshooting

    A069 L2 Service Manual CHAPTER 6 TROUBLESHOOTING CANNOT POWER ON-CURRENT SWING INSTABILITY Cannot power on Check the battery is normal? Replace the battery. Check the battery connector in normal? Replace the battery connector. Upgrade the software is normal? Replace the PCBA is normal?.
  • Page 9 A069 L2 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”?
  • Page 10 A069 L2 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...
  • Page 11 A069 L2 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...
  • Page 12 A069 L2 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 .
  • Page 13 A069 L2 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 14 A069 L2 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 damaged. Resolder or clean the receiver connector. Measure the signal with oscillograph under calling mode Replace the PCBA.
  • Page 15 A069 L2 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, Replace the MIC Replace FPC to check if...
  • Page 16 A069 L2 Service Manual DOES NOT CHARGE – NO CHARGE IN Upgrade the software No charge Change battery Check charger and cable without problem, or change good one Replace the charger or cable without Check if I/O connector works normal...
  • Page 17 A069 L2 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 Check if T-Flash FPC is normal? Re-solder or replace FPC. Check if the T-Flash connector is normal? Re-solder or replace the T-Flash connector.
  • Page 18 A069 L2 Service Manual WIFI、BT、FM 、GPS DEFECT REPAIR FLOW CHART WIFI or BT or FM or GPS can’t open， Can’t work normal Software update and check the function is OK or not Upgrade Software Check the WIFI or GPS antenna...