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Summary of Contents for Micromax Q301
- Page 1 Q301 L2 Service Manual...
- Page 2 Q301 L2 Service Manual 1：Technical Specifications Particular Remarks Chipset SC7731C Android Version Frequency GSM 850/900/1800/1900 WCDMA900/2100 512MB Factory mode code *#629#...
- Page 3 Q301 L2 Service Manual...
- Page 4 Q301 L2 Service Manual 2、service Details 1. Does not power on S.NO Possible Cause Validation steps Action Replace PCB if found Shorting Check shorting with Multi meter faulty Check voltage with Multi meter Value must Battery Replace if found faulty be 3.7V DC or above...
- Page 5 Q301 L2 Service Manual 2：Display issue/No display S.NO Possible Cause Validation steps Action Flash the handset with latest SW SW issue LCD issue Re-assembly LCD/Replace it No display PCBA issue Re-assembly PCBA/Replace it PCBA issue Re-Solder the LCD connector or change it...
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Page 6: Touch Panel
Q301 L2 Service Manual 3：Touch panel S.NO Possible Cause Validation steps Action SW Issue Flash the handset with latest SW TP issue Re-assembly TP/Replace it TP not working PCBA issue Refer to L3 repair PCBA issue Re-Solder the TP connector or change it... - Page 7 Q301 L2 Service Manual 5：Charging S.NO Possible Cause Validation steps Action Adapter is fail Change adapter Cable is fail Change Cable Cannot charge into Battery is issue Charging or Change it Main FPC issue Re-assembly or Change it I/O connector is fail...
- Page 8 Q301 L2 Service Manual 6：USB S.NO Possible Cause Validation steps Action USB cable is fail Change USB cable I/O connector fail Re-Solder or Change it Cannot connect to PC Main FPC issue Re-assembly or Change it PCBA fail Change PCBA...
- Page 9 Q301 L2 Service Manual 7： Camera S.NO Possible Cause Validation steps Action Camera is fail Re-assembly or Change it Colored screen when open front camera PCBA fail Change PCBA SW issue Flash the handset with latest SW Camera fail Re-assembly or Change it...
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Page 10: Playing Video
Q301 L2 Service Manual 8：Playing Video S.NO Possible Cause Validation steps Action SW issue Flash the handset with latest SW Hang often Flash poor soldering Refer L3 Repair CPU poor soldering Refer L3 Repair 9：Vibrator S.NO Possible Cause Validation steps... - Page 11 Q301 L2 Service Manual 10：RF Network S.NO Possible Cause Validation steps Action SW issue Flash the handset with latest SW RF antenna issue Re-assemble or Change it SIM socket is fail Re-Solder or Change it RF Network cannot Some dust with RF Slot...
- Page 12 Q301 L2 Service Manual Earphone is fail Change Earphone FM antenna fail Re- Solder or Change earphone connector PCBA fail Change PCBA...
- Page 13 Q301 L2 Service Manual 12: Receiver S.NO Possible Cause Validation steps Action Dust with receiver Clean it Noise/crack Receiver issue Re-assemble or Change it SW issue Flash the handset with latest SW Receiver is set too low by Noise/volume low...
- Page 14 Q301 L2 Service Manual 13：Earphone S.NO Possible Cause Validation steps Action SW issue Flash the handset with latest SW Earphone is fail Change Earphone Not working / from PCBA issue Refer to L3 service earphone Earphone connector Re-Solder or Change it...
- Page 15 Q301 L2 Service Manual 14：MIC S.NO Possible Cause Validation steps Action Some dust with MIC Clean it MIC issue Re-assemble Noise with uplink side MIC issue Re- Solder PCBA issue Refer to L3 repair soldering issue Re-Solder or Change it...
- Page 16 Q301 L2 Service Manual 15: Speaker S.NO Possible Cause Validation steps Action Speaker with dust Clean speaker Noise/crack Speaker foam issue Re-assemble or Change SPK Speaker issue Change speaker Assemble issue Assemble again SW issue Flash the handset with latest SW...
- Page 17 Q301 L2 Service Manual 16：Battery S.NO Possible Cause Validation steps Action Battery issue Change battery Show charging but it is not charged Charging connector issue Re-Solder or Change it PCBA issue Re-assemble or Change PCBA No charging PCBA issue Refer to L3 repair...
- Page 18 Q301 L2 Service Manual 17：WiFi/BT/GPS S.NO Possible Cause Validation steps Action Set wifi turn off as default Reset wifi to turn on wifi SW issue Flash the handset with latest SW WI-FI not working Re-assembly WiFi/BT antenna or WiFi/BT antenna change it.