Micromax L2 Bedienungsanleitung

GC318 L2 Service Manual

1. Technical Specifications

Particular

Remarks

Key Matrix For Flashing

N/A

Chipset

MTK6260A QSC1110

Android Version

N/A

Frequency

360Mhz

Network Mode

GSM 900/1800

CDMA 800

GSM

128 0Mb

CDMA

128 32Mb

Internal SD Card memory

Expandable Memory

8GB

Factory mode code

*#629#

Good Earpiece value in ohms

32Ω±15%

Good Loudspeaker value in ohms

8Ω ±15%

Good Mic value in ohms

1.0KΩ-2.2KΩ（test condition f=1KHZ，Pin=1Pa）

Good Vibrator value in ohms

59Ω±15% ohms

At 25℃

GC318 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

Doesn’t Power On

MB is broken

Refer to L3 service manual

Check weather End Key is broken

GC318 L2 Service Manual

2) Restart / Hang

NO.

Description

Reason

Solution

Battery malfunction

Replace battery & check

Restart / Hang

Software corrupt

Update Software

Check battery Connector

Clean & Change If required

MB issue

Refer to L3 service manual

Replace battery

GC318

L2 Service Manual

LCD Issue

Description

Reason

Solution

Exchange the front shell module to

Problem in the LCD

judge if the LCD is OK

Damage of the LCD

Replace the LCD connector

connector

Soldering abnormality or

damage of the diode

Black screen and no display

of LCD

Abnormality or damage of

Refer to the service guide L3

the backlight driver IC

Soldering abnormality or

Black screen, white screen

damage of the EMI devices

and blurred screen when the

Refer to the service guide L3

backlight is OK

connected in series on the

LCD MIPI signal line

Front shell

assembly

LCD connector

GC318 L2 Service Manual

4) Keypad

NO.

Description

Reason

Solution

Keys doesn't work

MB is broken

Refer to L3 service manual

GC318 L2 Service Manual

5) Charging

Description

Reason

Solution

Data cable issue

Change the data cable

I/O connector

Change the I/O connector

No charging

Charger issue

Change the charger

CPU

Refer to the service guide L3

Data cable issue

Change the data cable

Charging slow

I/O connector

Change the I/O connector

CPU <VCHG is poor soldering>

Refer to the service guide L3

CHARGER

GC318

L2 Service Manual

USB

Description

Reason

Solution

CABLE ISSUE

Change it

CHARGER ISSUE

Change it

NO CHARGING

The I/O connector of PCBA is

Change the I/O connector

with issue

CPU

Refer to the service guide L3

Cannot use DATA

D+ or D- is broken

Change the data cable

DATA CABLE

GC318

L2 Service Manual

7) Back Camera

Description

Reason

Solution

Soldering issue

Re-solder it

Bad image

Camera issue

Change it

CPU

Refer to the service guide L3

Soldering issue

Re-solder it

Camera not ready

Camera issue

Change it

CPU

Refer to the service guide L3

Soldering issue

DEAD, No functionality

Camera issue

Change camera

CPU

Cannot turn to front camera

Camera issue

Change front camera

Cannot turn to back camera

Camera issue

Change back camera

Back camera

Back camera with

GC318 L2 Service Manual

8) LED Light

NO.

Description

Reason

Solution

G-sensor doesn't work

MB is broken

Refer to L3 service manual

Vibrator

Description

Reason

Solution

The main FPC is not

Reinstall it

properly installed.

Problem of the main

Replace the main FPC

Vibration failure

FPC

Problem of the

Replace the subboard

subboard

Refer to the service guide

PMU

MOTOR

GC318 L2 Service Manual

10) Sim Related Issues / Network

Description

Reason

Solution

the connection of antenna is not

Assembly it again

good

SIM issue

use a fresh SIM to verify it

No signal

SIM slot issue

Refer to the service guide L3

RF IC issue

Refer to the service guide L3

Calibration data missing

Flash the SW

CPU

Refer to the service guide L3

11) Bluetooth

NO.

Description

Reason

Solution

No signal

Wifi\BT antenna bracket assembly issue

Re-assemble

MB is broken

Refer to L3 service manual

Andere Handbücher für L2

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