Micromax A74 L1 User manual

A74 L1&L2
service manual

2
content
1、Product introduce..………..p3-p4
2、Disassembly guide ……….p5-p17
3、Structure parts diagram…..p18
4、Repairing guide …………...p19-p29

3
Product introduce

4
Product introduce
Model ：
Product size：134*67*10.25
Platform：MTK6572，dual-core 1GHz
Memory：4GB+4Gb (Nand&sdram+RAM）
System：Android 4.2
Frequency band: WCDMA：2100，GSM：900/1800MHz
Battery：1500mAh
charger: Travel charger
USB cable: MICRO 5PIN
earphone：3.5jack
LCD&TP：4.5 FWVGA, Capacitance TP
Camera：0.3M and 5.0M CMOS
Support：BT2.1，WIFI，FM。
Support：3D graphics accelerator，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 12 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
Main PCBA LCD con.
Front
CAM con.
Back CAM.
USB con.
Earphoe
con.
TP con. T card
con. SIM con. Main FPC
Sub PCBA
vibrator
RF cable
Battery con.

2）remove two screws and open the LCD con.& TP con. ，and remove the
volume key FPC & power key FPC as the fig.5；
10
Fig.5
Disassembly guide
TPcon.
LCDcon.