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A99
1. Technical Specifications :
Particular
Key Matrix For Flashing
Chipset
Android Version
Frequency
Network Mode
ROM
RAM
Internal SD Card memory
Expandable Memory
Factory mode code
Remarks
NO
MT6582
Android 4.4
GSM 850/900/1800/1900 WCDMA 2100/900
Dual SIM:WCDMA+GSM
8GB
1GB
4GB
32GB
*#6803#
L2 Service Manual
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Summary of Contents for Micromax A99
- Page 1 L2 Service Manual 1. Technical Specifications : Particular Remarks Key Matrix For Flashing Chipset MT6582 Android Version Android 4.4 Frequency GSM 850/900/1800/1900 WCDMA 2100/900 Network Mode Dual SIM:WCDMA+GSM Internal SD Card memory Expandable Memory 32GB Factory mode code *#6803#...
- Page 2 L2 Service Manual 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.
- Page 3 L2 Service Manual 3. L2 Level trouble shooting Please add trouble shooting/ Repairing steps against below given symptoms Images must paste against every suggested troubleshooting hint 1) Doesn’t Power On Description Reason Solution Side key FPC is badly soldered Re-soldered side key FPC Doesn’t Power On Side key is broken Change a new side key...
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Page 4: Replace Battery
L2 Service Manual Replace battery 3) LCD Description Reason Solution Exchange the front shell module to judge if the LCD Problem in LCD is OK Black screen & no Damage of the LCD connector Replace the LCD display of connector Soldering abnormality or Refer to the service guide damage of the diodeoD202 in... - Page 5 L2 Service Manual LCD connector Front shell assembly 4) Touchpad Issue Description Reason Solution Problem of the TP Exchange the front shell module to judge if the TP is OK Damage of the TP connector Replace the TP connector Malfunction of touch Pseudo soldering or damage of Refer to the service guide screen...
- Page 6 L2 Service Manual TP connector Front shell assembly...
- Page 7 L2 Service Manual 5) Proximity Sensor Description Reason Solution MB is broken Refer to the service guide Proximity Sensor is not well Proximity Sensor is not work Change the sensor 6) Accelerometer Description Reason Solution G-sensor doesn’t Refer to the service guide work MB is broken...
- Page 8 L2 Service Manual 7) Keypad Description Reason Solution Side key FPC is badly soldered Re-soldered side key FPC Side key is broken Change a new side key Key doesn’t work MB is broken Refer to l3 service manual Check whether side key is broken...
- Page 9 L2 Service Manual 8) Charging Description Reason Solution Data cable issue Change the data cable I/O Connector Change the connector No charging Charger issue Change the charger Refer to l3 service manual Data cable issue Change the data cable I/O Connector Change the I/O connector Charging slow MB<VBUS is poor soldering>...
- Page 10 L2 Service Manual 9) USB Description Reason Solution Data cable issue Change the data cable I/O Connector Change the connector No charging Charger issue Change the charger Refer to l3 service manual Data cable issue Change the data cable Can’t use DATA...
- Page 11 L2 Service Manual 10) Front Camera Description Reason Solution Soldering issue Re-solder it Camera issue Change it Bad image Refer to l3 service manual Soldering issue Re-solder it Camera issue Change it Camera not ready Refer to l3 service manual Soldering issue Re-solder it Camera issue...
- Page 12 L2 Service Manual 11) Back Camera Same as front camera 12) Flash Light Description Reason Solution Flashlight doesn’t Refer to the service guide work MB is broken 13) Vibrator Description Reason Solution Vibration failure The vibrator is badly soldered Re-solder it Refer to the service guide vibrator...
- Page 13 L2 Service Manual 14) Sim Related Issues / Network Description Reason Solution SIM not detected The connection of antenna is Assembly it again not good SIM issue Use a fresh SIM to verify it SIM slot issue Refer to the service guide RF IC issue Refer to the service guide Calibration data missing...
- Page 14 L2 Service Manual 16) WI-FI/Bluetooth Description Reason Solution No signal Wifi/BT antenna bracket Re-assemble assemly issue MB is broken Refer to the service guide...
- Page 15 L2 Service Manual 17) FM / Radio Description Reason Solution Earphone issue Change a new earphone No signal Earphone jack of mainboard Refer to the service guide issue 18) Heating Description Reason Solution Battery issue Change a new battery Device heating MB issue Refer to L3 service manual...
- Page 16 L2 Service Manual 19) Ear Phone Description Reason Solution Earphone issue Change the earphone Open the housing of MIC,check and solder the Cable broken cable Earphone issue I/O connector issue Replace I/O connector CPU or PMU issue Refer to the service guide Open the housing of MIC,check and solder the Cable broken...
- Page 17 L2 Service Manual 20) Outgoing Audio / MIC Description Reason Solution There is dust with MIC Clean the MIC Solder issue Re-solder it MIC issue Change the MIC Noise with uplink side Reassemble the link FPC The main link FPC assembly issue CPU or related component Refer to L3 service manual...
- Page 18 L2 Service Manual 21) Incoming Audio / Earpiece & Speaker & Vibrator Description Reason Solution There is dust with receiver Clean the receiver Receiver issue Change it Noise/crack Refer to the service guide Connection issue Assembly it again Receiver issue Change it No voice/volume low Refer to the service guide...
- Page 19 L2 Service Manual Speaker Description Reason Solution The SPK with dust Clean the SPK SPK foam issue Change it Noise/crack SPK issue Change it Refer to the service guide Soldering issue Re-soldering it SPK issue Change it No volume Refer to the service guide Soldering issue Re-soldering it SPK issue...
- Page 20 L2 Service Manual 23) Memory Card Description Reason Solution SD card corrupted Change a new SD card SD card slot issue Clean SD card connector Replace if required SD card issue Still not working Refer to the service guide Thanks For any Query or suggestion, Please write to tech.help@micromaxinfo.com...