Micromax A121 User manual

A121 L2 Service Manual
Product introduce
Model ：A121
Product size：146.2*74.2*10.2mm
Platform：MSM8212，1.2GHz Quad
Memory：4GB+1GB (Nand&sdram+RAM）
System：Android
Frequency band: WCDMA：900+2100 ，GSM：850/900/1800/1900
Battery：2000mAh
Charger: Travel charger
USB cable: MICRO 5PIN
Earphone：3.5jack
LCD&TP：5.0HD IPS, resolution: 1280*720，Capacitance TP
Camera：2.0M and 8.0M CMOS
Support：GPS，BT4.0，WIFI，WAPI
Support：3D graphics accelerator，accelerator sensor, distance sensor, light
feeling sensor，Double MIC noise reduction

A121 L2 Service Manual
1. Tools list
Tweezer
Cross screw driver
Solder
Tommy bar
Hot gun

A121 L2 Service Manual
2. Battery cover disassembly
Open the battery cover，as the Fig. 1
3. Back caver disassembly
Unscrew 9 screws in back cover，as the Fig.2

A121 L2 Service Manual
Disassemble back cover with Tommy bar，as the Fig.3

A121 L2 Service Manual
4. Main board and front cover disassembly
The main components of distribution，as the fig.4

A121 L2 Service Manual
Remove 3 screws and open the LCD con. & TP con，remove the volume key
FPC & power key FPC, as the FIG. 5

A121 L2 Service Manual
Open the main board and remove the RF cable con. And main FPC con..as
the FIG.6

A121 L2 Service Manual
5. Camera & light sensor disassembly
Remove the light sensor and Front camera and Back camera，as the fig.7

A121 L2 Service Manual
6. Power key FPC & volume key FPC disassembly
Remove the power key FPC and volume key FPC with the iron，as the fig.8

A121 L2 Service Manual
7. Sub PCBA disassembly
Remove the sub PCBA from the, as the fig.9