Micromax Ninja A91 Service Manual

1

A91

L1 & L2 service manual

2

content

 1、 Product introduce..………..p3-p4

 2、 Disassembly guide ……….p5-p19

 3、Structure parts diagram…..p20-p21

 4、 Repairing guide …………...p22-p32

3

Product introduce

4

Product introduce

Model ：

Product size： 130×66×10mm

Platform： MTK 6577 ，dual-core 1.0GHz

Memory： 4GB+512MB (Nand&sdram+RAM）
System： Android 4.0
Frequency band:dual-SIM WCDMA：2100MHz，GSM900/1800/1900 MHZ
Battery： 1800mAh
charger: Travel charger
USB cable: MICRO 5PIN
earphone： 3.5jack
LCD&TP： 4.5FWVGA,TN, resolution:480*854，Capacitance TP multi-point

touch（2 point）

Camera：0.3M and 5.0M CMOS
Support：GPS， BT3.0，WIFI，FM。
Support：accelerator sensor, distance sensor, light feeling sensor。

5

Hot gun

Tweezer

Solder iron

Tommy bar

Cross Screw driver

1. Tools list

Tweezer /Cross screw driver/ Solder/Tommy bar/hot gun

Disassembly guide

6

2. Battery caver disassembly

open the battery cover

，

as the Fig. 1

Fig. 1

Disassembly guide

Battery

cover

7

3. Back caver disassembly

1） Unscrew 10 screws in back cover ，as the Fig.2；

Fig. 2

Disassembly guide

8

Fig. 3

2） Disassemble back cover with Tommy bar ，as the Fig.3；

Disassembly guide

Back

cover

SPK

9

4.Main board and front cover disassembly

1）The main components of distribution，as the fig.4；

Fig.4

Disassembly guide

Sub PCBA RF cable

SIM con.

LCD con.

TP con.

Earphone

con.

USB con.

5.0M
CAM.

Main

PCBA

T card

con.

Battery con.

Main FPC

vibrator

2）remove two screws and open the volume key FPC & LCD con.& TP con. ，
as the fig.5；

10

Fig.5

Disassembly guide

LCDcon.

TPcon.

Volume key

FPC