Micromax X249 Service Manual
  1. Manuals
  2. Brands
  3. Micromax Manuals
  4. Cell Phone
  5. X249
  6. Service manual

Micromax X249 Service Manual

L3
Hide thumbs Also See for X249:
Table of Contents

Advertisement

Quick Links

Download this manual See also: User Manual
X249
1. Technical Specifications :
Please fill below information in Remarks, Below given remarks are for
reference only
Particular
Key Matrix For Flashing
Chipset
Android Version
Frequency
Network Mode
ROM
RAM
Internal SD Card memory
Expandable Memory
Factory mode code
2. CAUTIONS
I.
Flashing & Servicing must be undertaken by qualified personnel only.
II.
Ensure all work is carried out at an anti-static workstation and that an
anti-static wrist strap is worn.
III.
Use only approved Tools & components as specified in the parts list.
IV.
Ensure all components, modules, screws, and insulators are correctly
re-fitted after servicing and alignment
V.
Ensure all cables and wires are repositioned correctly if Handset
disassembled
VI.
Electrostatic discharge can easily damage the sensitive components of
electronic products. Therefore, Service Centre must adhere the precautions
which mentioned above.
L3 Service Manual
Remarks
N/A
MT6260M
N/A
360Mhz
GSM 900/1800
24Mb
32Mb
NO
32GB
*#510838#
1

Advertisement

Table of Contents
loading

Related Manuals for Micromax X249

Summary of Contents for Micromax X249

  • Page 1 X249 L3 Service Manual 1. Technical Specifications : Please fill below information in Remarks, Below given remarks are for reference only Particular Remarks Key Matrix For Flashing MT6260M Chipset Android Version Frequency 360Mhz Network Mode GSM 900/1800 24Mb 32Mb Internal SD Card memory...
  • Page 2 X249 L3 Service Manual L3 Service Manual V1.0 Documents statement: This document is intended for use by qualified service ...
  • Page 3 X249 L3 Service Manual personnel only. The documents only are used for service reference.  TABLE OF CONTENT Sectionpage 1. Product Figures ..........................6 1-1. Exploded view ................6...

  • Page 4: Table Of Contents

    X249 L3 Service Manual 1-2. Product Main Function ..............7 1-3. General Specification ..............7 2. Block Diagrams ..........................8 2-1. System Diagrams ................8 2-1-1 BBIC Diagrams ............9 2-2. Power Management Diagrams ............ 11 3. Flow Chart of Troubleshooting ....................12 3-1.Baseband ..................
  • Page 5 X249 L3 Service Manual 3-2-2.DCS/GSM TX Part ........... 36 4. Main Element Specifications ...................... 38 4-1 Baseband part ................38 4-1-1.BBIC(U201) ............. 39 4-2. RF part ..................46 4-2-1 RF PA(U102) ............46 5. Test Instructions .......................... 48 6. Glossary ............................49...

  • Page 6: Exploded View

    X249 L3 Service Manual 1. ProductFigures 1-1. Exploded view J602Headphone Jack Damage caused by failure： Headphones silent; not receive FM U201 BBIC U102 RF PA Damage caused by failure Damage caused by failure： does not boo;crashes Call fault J802SIM &T-flash card Damage caused by failure：...
  • Page 7 X249 L3 Service Manual J702 cameraPAD Damage caused by failure： Camera does not work J604 LCD pad Damage caused by failure： Does not display Keypad Damage caused by failure： Invalid keys Part name ITEM Part No. Model QULITY HQ11100139000 MT6260DA...

  • Page 8: Product Main Function

    X249 L3 Service Manual 1-2. Product Main Function SupportCamera  Music player  Support T-Flash card  2.4" QVGA LCD  Support dual SIM card   Support GSM900&DCS1800Network Support bluetooth   Support FM radio 1-3. General Specification...

  • Page 9: Block Diagrams

    X249 L3 Service Manual 2. Block Diagrams 2-1. System Diagrams RF-TR Charger IC 5V IN RF-PA Battery SIM 1/SIM Audio_PA Speaker USB DM/DP T-FLASH URAT TX/RX Camera Bluetooth 3.5MM Earphoen WIFI IC Jack Receiver FM Radio ROM+RA Side Health RX Filter...

  • Page 10: Bbic Diagrams

    X249 L3 Service Manual 2-1-1 BBIC Diagrams Application Diagram of MT6260...

  • Page 11: Power Management Diagrams

    X249 L3 Service Manual 2-2. Power Management Diagrams...

  • Page 12: Flow Chart Of Troubleshooting

    X249 L3 Service Manual 3. Flow Chart of Troubleshooting 3-1.Baseband 3-1-1. Phone does not start up troubleshooting Power-on Sequence and Protection Logic: The PMU handles the powering ON and OFF of the handset. There are three ways to power-on the handset system : ①...
  • Page 13 X249 L3 Service Manual Download troubleshooting Main related component: BBIC(U201)，XTAL CRYSTAL（U103), MINI USB(J701) J1102 Check the clock generation circuit Check the VBAT circuit component Check the baseband circuit (related to BBIC) (related to (related to BBIC,keypadFPC,LCD) U201,LCD,keypadbacklight,VIB……)

  • Page 14: Sim Troubleshooting

    X249 L3 Service Manual 3-1-2. SIM troubleshooting Troubleshooting flow chart Main related component:BBIC(U201),SIM connector(J702)

  • Page 15: 3-1-3T-Flash Troubleshooting

    X249 L3 Service Manual 3-1-3. T-Flash troubleshooting Troubleshooting flow chart Main related component:BBIC(U201T-FLASH CONNECTOR(J702) J702...
  • Page 16 X249 L3 Service Manual SIM CIRCUIT&T-Flash circuit m BBIC(SIM1) From BBIC(SIM2) rom BBIC(T-card)

  • Page 17: Mic Troubleshooting

    X249 L3 Service Manual 3-1-4. MIC troubleshooting Troubleshooting flow chart Main related component:BBIC(U201MIC...
  • Page 18 X249 L3 Service Manual MIC circuit From MIC To BBIC...

  • Page 19: Speaker Troubleshooting

    X249 L3 Service Manual 3-1-5. Speaker troubleshooting Speaker circuit FROM To Speaker BBIC...
  • Page 20 X249 L3 Service Manual Troubleshooting flow chart Main related component:BBIC(U201)SPEAKER...

  • Page 21: Earpiece Troubleshooting

    X249 L3 Service Manual 3-1-6. Earpiece troubleshooting Troubleshooting flow chart Main related component:BBIC(U201EARPIECE...
  • Page 22 X249 L3 Service Manual Earpiece circuit To earpiece FROM BBIC...

  • Page 23: Vibra Troubleshooting

    X249 L3 Service Manual 3-1-7. Vibra troubleshooting Troubleshooting flow chart Main related component: BBIC,MOTOR...
  • Page 24 X249 L3 Service Manual Vibra circuit To VIB...

  • Page 25: Camera Troubleshooting

    X249 L3 Service Manual 3-1-8. Camera troubleshooting Troubleshooting flow chart Main related component: BBIC(U201） ，CAMERA MODULE.
  • Page 26 X249 L3 Service Manual Camera circuit From BBIC...

  • Page 27: Fm Radio Troubleshooting

    X249 L3 Service Manual 3-1-9. FM radio troubleshooting Troubleshooting flow chart Main related component:BBIC(U201earphone jack(J602) Check earphone jcak(J602)solder joints and spring contacts Are those OK ? U201 U201...
  • Page 28 X249 L3 Service Manual FM Circuit From earphone HEADGND ANT IN...

  • Page 29: Display Troubleshooting

    X249 L3 Service Manual 3-1-10. Display troubleshooting Troubleshooting flow chart Main related component: BBIC(U201）, LCD.
  • Page 30 X249 L3 Service Manual Display Circuit...

  • Page 31: Bluetooth Troubleshooting

    X249 L3 Service Manual 3-1-11. Bluetooth troubleshooting Troubleshooting flow chart Main related component: BBIC(U201) Bluetooth circuit...
  • Page 32 X249 L3 Service Manual 3-1-12. Side health Troubleshooting Keyboard circuit...
  • Page 33 X249 L3 Service Manual Troubleshooting flow chart Main related component:BBIC(U201) and keypad FPC...

  • Page 34: Charge Troubleshooting

    X249 L3 Service Manual 3-1-13. Charge troubleshooting Troubleshooting flow chart Main related component: BBIC(U201),MINI USB(J701)，charge（U301）.
  • Page 35 X249 L3 Service Manual Battery charge circuit Charge control...

  • Page 36: 3-2-1.Gsm/Dcs Rx Troubleshooting

    X249 L3 Service Manual 3.2 RF 3-2-1.GSM/DCS RX troubleshooting Troubleshooting flow chart Main related component: BBIC(U201)，XTAL CRYSTAL（U103) ,RF-PA（U102）...
  • Page 37 X249 L3 Service Manual 3-2-2.GSM/DCS TX Part Troubleshooting flow chart Main related component: BBIC(U201)，XTAL CRYSTAL（U103),RF-PA（U102）...
  • Page 38 X249 L3 Service Manual RF Circuit  RF-PA circuit...

  • Page 39: Main Element Specifications

    X249 L3 Service Manual 4. Main Element Specifications 4-1 Baseband part 4-1-1.BBIC(U201)
  • Page 40 X249 L3 Service Manual...
  • Page 41 X249 L3 Service Manual...
  • Page 42 X249 L3 Service Manual...
  • Page 43 X249 L3 Service Manual...
  • Page 44 X249 L3 Service Manual...
  • Page 45 X249 L3 Service Manual...
  • Page 46 X249 L3 Service Manual...

  • Page 47: Rf Part

    X249 L3 Service Manual 4-2. RF part 4-2-1 RF PA(U102)
  • Page 48 X249 L3 Service Manual...

  • Page 49: Test Instructions

    X249 L3 Service Manual 5. Test Instructions Input test command "* # 510838 #" into the automatic test mode: 1. Version test ; 2. LCD test; 3. LCD BcakLight test; 4. KeyPad test; 5. MIC & Receiver test; 6. Headset test;...

  • Page 50: Glossary

    X249 L3 Service Manual 6. Glossary...
  • Page 51 X249 L3 Service Manual...

  • Page 52: Warnings And Cautions

    X249 L3 Service Manual 7. Warnings and cautions Warnings  If the device can be installed in a vehicle, Care must be taken on installation in vehicles fitted with. Electronic engine management systems and anti-skid braking systems. Under certain fault conditions, Emitted rf energy can affect their operation.

Table of Contents