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X249 L2 Service Manual

1. Technical Specifications

Below given remarks are for reference only.

Particular

Remarks

Key Matrix For Flashing

N/A

Chipset

MT6260D

Android Version

N/A

Frequency

360Mhz

Network Mode

GSM 900/1800

ROM

24Mb

RAM

32Mb

Internal SD Card memory

Expandable Memory

32GB

Factory mode code

*#510838#

2. CAUTIONS

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

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.

Содержание x249

Страница 1: ...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...

Страница 2: ...CD Abnormal Display 3 5 Charging Abnormal 3 6 Fail to Identify SIM 3 7 No Echo Fail to Record But There Has Ring Tone 3 8 Keypad Fault 3 9 Receiver Fault 3 10 Earphone Radio Silent 3 11 External Audio...

Страница 3: ...tly battery voltage 3 4v re install recharge check the connection between LCD module and PCBA is reliable cable and LCD cable with PCBA and LCD cable with PCBA reassemble replace LCD and make bad mark...

Страница 4: ...NO NO No YES NO YES NO check solder of speaker is ok repair welding of speaker replace speaker check if the speaker circuit is normal replace speaker OK amend the mainboard referring to its repair in...

Страница 5: ...play check if the LED is damaged replace LCD analyze the circuit according to the mainboard to make sure if it is the mainboard problem replace the mainboard OK amend the mainboard referring to its re...

Страница 6: ...NO check again by replacing battery or charger replace battery or charger weld connector repair the mainboard check if the battery and charger connector is soldering or missing charging fault OK refe...

Страница 7: ...rd check if SIM connector is soldering weld SIM connector check the periphery circuit of SIM connector is normal repair the mainboard by referring to the mainboard repair instructions check the connec...

Страница 8: ...ect solder or replace MIC replace the mainboard no echo fail to record but there has ring tone check if MIC sound hole is jammed replace MIC and make bad marks on the bad MIC OK replace MIC clean MIC...

Страница 9: ...orrectly reassemble the keypad re paste the DOME Is structural parts related to DOME amend the related structural parts check DOME is pasted correctly keypad Fault OK analyze the circuit of the mainbo...

Страница 10: ...eld the pseudo welding part replace the mainboard check if receiver is pseudo welding no voice in receiver OK replace the receiver replace receiver check the periphery circuit of MIC connector is norm...

Страница 11: ...ne replace the mainboard check if the earphone is damaged earphone radio silent OK check the pin of USB port is soldering solder the USB port check the radio circuit clean the matter check if there is...

Страница 12: ...NO replace the speaker replace the mainboard check if the speaker is pseudo welding external audio radio silent OK check the phone reception circuit replace the FM antenna check if the FM antenna is d...

Страница 13: ...na to the location replace the mainboard check the connection of phone antenna no signal OK check if the phone is in airplane mode abnormality adjust it to general mode check the circuit of radio freq...

Страница 14: ...place the mainboard check if T card is installed correctlly fail to recognize T card OK check if T card is damaged replace the T card check the circuit of T card connector replace the T card connector...

Страница 15: ...erface of earphone is soldering or broken OK check if the pin of mainboard USB interface is soldering or out of shape weld or replace the USB interface check the related circuit of USB outlet end clea...

Страница 16: ...ggestion Please write to tech help micromaxinfo com reinstall check if the camera is damaged replace the camera check the welding of camera is good camera shooting abnormalities OK check the circuit o...

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