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Related Manuals for Micromax A76
Summary of Contents for Micromax A76
- Page 1 A76 service manual...
- Page 2 content 1、 Product introduce..………..p3-p4 2、 Disassembly guide ……….p5-p17 3、Structure parts diagram…..p18 4、 Repairing guide …………...p19-p29...
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Page 3: Product Introduce
Product introduce... - Page 4 Product introduce ：MA76 Model Product size：146 * 75.3 *10.4 Platform：MTK6572，dual-core 1.2GHz Memory： 4GB+4Gb (Nand&sdram+RAM） System：Android 4.2 Frequency band: WCDMA：2100，GSM：900/1800MHz Battery： 2000mAh Travel charger charger: MICRO 5PIN USB cable: 3.5jack earphone： LCD&TP： 5.0 FWVGA, Capacitance TP， multi-point touch Camera：0.3M and 5.0M CMOS Support：BT2.1，WIFI，FM，NTC。...
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Page 5: Disassembly Guide
Disassembly guide 1. Tools list Tweezer /Cross screw driver/ Solder/Tommy bar/hot gun Tommy bar Tweezer Cross Screw driver Solder iron Hot gun... - Page 6 Disassembly guide 2. Battery caver disassembly ， as the Fig. 1 open the battery cover Battery cover Fig. 1...
- Page 7 Disassembly guide 3. Back caver disassembly ，as the Fig.2； 1） Unscrew 12 screws in back cover Fig. 2...
- Page 8 Disassembly guide ，as the Fig.3； 2） Disassemble back cover with Tommy bar Back cover Fig. 3...
- Page 9 Disassembly guide 4.Main board and front cover disassembly ，as the fig.4； 1） The main components of distribution Main PCBA LCD con. RF cable Battery con. 1.2M CAM con. vibrator 8M CAM. USB con. Sub PCBA Earphoe con. TP con. T card Main FPC SIM con.
- Page 10 Disassembly guide 2）remove two screws and open the LCD con.& TP con. ，and remove the volume key FPC & power key FPC as the fig.5； TPcon. LCDcon. Fig.5...
- Page 11 Disassembly guide 3）open the main board and remove the RF cable con. And main FPC con..as the FIG.6 RF cable con. Main FPC con. Main board Fig.6...
- Page 12 Disassembly guide 5. 0.3M and 5M camera & light sensor disassembly remove the light sensor and 0.3M camera，as the fig.7； 5M cam. Light sensor&holder Light sensor con. Fig.7 0.3M cam.
- Page 13 Disassembly guide 6.Power key FPC & volume key FPC disassembly remove the power key FPC and volume key FPC with the iron，as the fig.8； Volume key Power key Fig.8...
- Page 14 Disassembly guide 7. Speaker & receiver disassembly remove the Speaker camera and receiver，as the FIG.9； receiver Fig.9...
- Page 15 Disassembly guide 8. RF cable and Main FPC disassembly Remove the RF cable and Main FPC ，as the fig.10 RF cable Main FPC Fig.10...
- Page 16 Disassembly guide 9. Sub PCBA disassembly remove the sub PCBA from the ，as the fig.11； vibrator Sub PCBA Fig.11...
- Page 17 Disassembly guide 10.MIC disassembly Remove the MIC，as the fig.12； MIC con. Fig.12...
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Page 18: Structure Parts Diagram
Structure parts diagram 5M camera Sensor receiver holder Main Light 0.3M camera PCBA sensor RF cable sub PCBA Main FPC Back cover Battery cover 3in1 module (LCD, TP & front cover... - Page 19 Repairing guide 1. LCD a. Check if the SW is correct, otherwise to upgrade the SW; b. Check the LCD if is ok, otherwise change a new LCD; c. If that the LCD loose, re-assemble the LCD and test; d. Checking the LCD connector if is ok, otherwise re-solder it or change a new one; e.
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Page 20: Repairing Guide
Repairing guide 2. Camera a. Checking the camera is assemble ok, re-assemble the camera and test; b. Using the good camera to do cross test, it can check if the camera is ok; c. Checking the camera connector if is ok as below picture, otherwise to re-solder or change a new one;... - Page 21 Repairing guide 3. TP a. Checking the SW and upgrade the SW; b. Checking the FPC of TP and re-assemble it; c. Using the good TP to do cross test; d. Checking the TP connector, otherwise re-solder or change a new one; e.
- Page 22 Repairing guide 4.Ring a. Checking the shrapnel of speaker if is ok; b. Checking the resistance of speaker if is ok, otherwise to change a new one; c. Checking the FPC if is ok; d. Checking SPK-FPC if connector with sub-board is ok.
- Page 23 Repairing guide 5.receiver a. Checking the shrapnel of receiver if is ok; b. Checking the resistance of receiver if is ok, otherwise to change a new one; c. Checking the connector point on the main board if is ok, as below picture;...
- Page 24 Repairing guide 6.MIC and Vibrator a. Checking the MIC and Vibrator is cold soldering, re-solder it; b. Change the MIC and Vibrator; c. Checking the circuit of MIC and Vibrator; d. Checking the FPC if connect ok. MIC con.
- Page 25 Repairing guide 7. Earphone a. Checking the shrapnel of earphone if is ok; b. Checking the connector point on the main board if is ok, as below picture; c. Change earphone connector; c. Checking the circuit of earphone. earphone...
- Page 26 Repairing guide 8.No Power On a. Checking the voltage of battery if is 3.8-4.2V and connect ok; b. Upgrade the SW; b. Checking the power on key and circuit around it.; Power On...
- Page 27 Repairing guide 9.No charging a. Checking the voltage of battery if is over 3.4V; b. Checking the charger and USB cable if is ok; c. Checking the USB connector and circuit if is ok. USB Connector...
- Page 28 Repairing guide 10.No SIM card and No memory card a. Checking the connector of T –card and SIM card; Change the connector of T –card and SIM card; T-card connector Connector...
- Page 29 Repairing guide 11.Signal a. Checking RF line if that is broken; b. Checking RF line assemble if is ok; RF connector Sub-board RF connector...
- Page 30 Q&A...
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