Micromax A310 Bedienungsanleitung
A310 L2 Service Manual
1. Technical Specifications :
Particular
Remarks
Key Matrix For Flashing
NA
Chipset
MT6592
Android Version
Android 4.4
Frequency
GSM：900/1800/1900MHz UMTS：900/2100MHz
Network Mode
Dual SIM: WCDMA+GSM
ROM
8 GB
RAM
2 GB
Internal SD Card memory
No less than 5GB
Expandable Memory
32GB
Factory mode code
*#9527*#
A310 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. 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.
3. L2 Level trouble shooting
1) Doesn’t Power On
NO.
Description
Reason
Solution
1
Doesn’t Power On
Side Key is badly soldered
Re-solder side key.
Side Key is broken
Change a new Side Key
Check battery Connector
Clean & Change If required
MB is broken
Refer to L3 service manual
Check weather Side Key is broken
A310 L2 Service Manual
2) Restart / Hang
NO.
Description
Reason
Solution
1
Restart / Hang
Battery malfunction
Replace battery & check
Software corrupt
Update Software
Check battery Connector
Clean & Change If required
MB issue
Refer to L3 service manual
Replace battery
A310 L2 Service Manual
3) LCD Issue
NO
Description of Fault
Reason
Solution
1
Black screen and no
display of LCD
Problem of the LCD
Exchange the front shell
module to judge if the LCD is
OK
Damage of the LCD connector
Replace the LCD connector
Soldering abnormality or damage of
the diode D1803 in the backlight
circuit
Refer to the service guide L3
Soldering abnormality or damage of
the power inductor L1800 in the
backlight circuit
Refer to the service guide L3
Abnormality or damage of the
backlight driver IC
Refer to the service guide L3
2
Black screen, white
screen and blurred
screen when the
backlight is OK
Soldering abnormality or damage of
the EMI devices (LB1800, LB1801,
LB1802, LB1803, LB1804) connected
in series on the LCD MIPI signal line
Refer to the service guide L3
LCD connector
Front shell
assembly
A310 L2 Service Manual
4) Touchpad Issue
NO
Description
Reason
Solution
1
Malfunction of touch
screen
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
Pseudo soldering or damage of
R1835 and R1836 at the TP
connection
Refer to the service guide L3
CPU
Refer to the service guide L3
TP connector
Front shell
assembly
A310 L2 Service Manual
5) Proximity Sensor
NO.
Description
Reason
Solution
1
Proximity Sensor is
not well
MB is broken
Refer to L3 service manual
Proximity Sensor is not
well
Change the Sensor
TP is broken
Change the LCM
6) Accelerometer
NO.
Description
Reason
Solution
1
G-sensor
doesn't work
MBis
broken
Refer to
L3
service
manual
7) Keypad
NO.
Description
Reason
Solution
1
Keys
doesn't work
MBis
broken
Refer to
L3
service
manual
A310 L2 Service Manual
8) Charging
NO
Description
Reason
Solution
1
No charging
Data cable issue
Change the data cable
I/O connector
Change the I/O connector
Charger issue
Change the charger
PMU
Refer to the service guide L3
2
Charging slow
Data cable issue
Change the data cable
I/O connector
Change the I/O connector
PMU
Refer to the service guide L3
CHARGER
CHARGER
A310 L2 Service Manual
9) USB
NO
Description
Reason
Solution
1
NO CHARGING
CABLE ISSUE
Change it
CHARGER ISSUE
Change it
The I/O connector of PCBA is
with issue
Change the I/O connector
CPU
Refer to the service guide L3
2
Cannot use DATA
D+ or D- is broken
Change the data cable
DATA CABLE
A310 L2 Service Manual
10) Rear / Front Camera
NO
Description
Reason
Solution
1
Bad image
Soldering issue
Re-solder it
Camera issue
Change it
CPU
Refer to the service guide L3
2
Camera not ready
Soldering issue
Re-solder it
Camera issue
Change it
CPU
Refer to the service guide L3
3
DEAD, No
functionality
Soldering issue
Soldering issue
Camera issue
Change camera
CPU
CPU
4
Cannot turn to front
camera
Camera issue
Change front camera
5
Cannot turn to back
camera
Camera issue
Change back camera
Back camera with
flashlight
Front camera
Front camera
Back camera
A310 L2 Service Manual
11) Flash Light
NO.
Description
Reason
Solution
1
G-sensor
doesn't work
MBis
broken
Refer to
L3
service
manual
12) Vibrator
NO
Description
Reason
Solution
1
Vibrating is not
properly
Vibrator assembly issue
Assembly it again
Vibrator issue
Change it
2
No vibrating
Vibrator soldering issue
Soldering it again
Vibrator issue
Change it
PMU
Refer to the service guide L3
VIBRATOR
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