Transcript 3. Rear cover disassembly

MCX_AW536A_B01
L1&L2 Service Manual
Agenda
 Product ………………………p3-p4
 Disassembly guide ……… p5-p21
 L1&L2 Repairing guide……p22-p33
2
Product Instruction
3
Product
Product name：MCX_AW536A_B01
platform： MSM 7225AA (1GHz)
Battery：
1400mA
Charger: travel type 、Cable: Micro USB 5pin、Earphone type: 3.5mm
Memory：
4Gb Nand + 2Gb DDR （Memory card support max 32GB）
LCD：
3.5’HVGA 480*320 262K TFT
CAM：
2.0M （Type : CMOS)
GSM/WCDMA： GSM900 DCS1800 UMTS 2100MHZ（GSM&WCDMA）
System： Android 2.3
Support：
T-Flash、MP3、3GP、FM、USB2.0
Support：
GPS、BT2.1\WIFI
Support：
SIM 1 & SIM 2
Support:
Capacitive touch screen
4
1. Tools list
Tweezer /Cross screw driver/ Solder/Tommy bar/hot gun
Tommy bar
Tweezer
Cross Screw driver
Solder iron
Hot gun
5
2. Battery cover disassembly
Open the battery cover as picture 1;
Battery cover
Picture 1
6
3. Rear cover disassembly
Remove the 8 screw as picture 2；
Picture 2
7
3. Rear cover disassembly
Separate rear cover from front cover with tommy bar as picture 3&4.
Picture 3
8
3. Rear cover disassembly
Rear cover
Speaker
SIM con.
LCD con.
vibrator
Earphonecon.
I/O con.
2M camera
T card con.
Main FPC
RF cable
TP con.
Picture 4
4.MB & Front cover disassembly
1）Disconnect 1 screw , side key,and LCD con.,from MB as below picture
2)Disconnect TP con.,power key, and RF cable,as below pic.
screw
TP con.
LCD con.
Power key
Side key FPC
RF cable
4.MB&Front cover disassembly
3）Disconnect main FPC connector from MB as below picture.
Main FPC con.
4.MB&Front cover disassembly
3）take off the main board
MB
5. 2M camera and light-sensor disassembly
Take off the 2M camera and light-sensor form MB ,as below picture；
2M camera
Light-sensor
6. Side key and power key disassembly
Take off the side key and power key with soldering iron , as below picture；
Side key
power key
7. Key board and LCD housing disassembly
Disassembly the screws and then take off the keyboard,as below picture；
MIC
Key board
Main FPC
RF cable
Main FPC
RF cable
7. LCD housing disassembly
Disassembly the LCD housing ,as below picture；
LCD housing
8.LCD ,TP and front cover disassembly
Front cover
and TP
LCD
receiver
9.TP disassembly
Use hot air gun to heat the TP on front cover(100~150℃) about 2
minute, then take off the TP from front cover.
Heat area
L1&L2 Repairing
guide
20
L1&L2 Repairing guide
1. LCD display problem
a. Upgrade SW;
b. Check LCD and FPC of LCD；
c. Check LCD connector on main board；
LCD con.
21
2.2M CAM problem
a. Check if the CAM connect well；
b. Replace a new CAM to check if the former CAM is OK;
c. Check the CAM connector as below picture；
d. Check the components around CAM connector;
2M CAM
connector
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4. TP failure
a. Check if the TP FPC connect to main board well；
b. Replace a new TP to Check if it is OK;
c. Check the TP connector ；
TP connector
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5.No ringtone
a. Check the two pin on speaker if it can connect to mainbaord；
b. Check the resistance of speaker；
c. Check the keyboard, FPC and connector if it is ok;
d. Check the components around speaker.
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6.Receiver no function
a. Check the two pin of receiver；
b. Check the resistance of receiver；
c. Check the components around receiver.
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7.Microphone no function
a. Check if MIC soldering well；
b. Replace new MIC to do cross check；
c. Check the keyboard,FPC and connector ；
d. Check the components around MIC.
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8.No vibration or earphone no function
a. Check the soldering of Vibrator and earphone jag；
b. Replace a new vibrator or jag to cross check ；
c. Check the components around earphone jag or vibrator.
vibrator
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9. Can not power on
a. Check the voltage of battery (3.8~4.2V). And if battery connect to
connector well;
b. Upgrade SW；
c. Check the power key and around components；
Power key FPC
weld pad
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10.Can not detect SIM card or TF card
a. Check the SIM con.and T card con. ;
b. Replace a new SIM con. Or T card con. to do cross check；
SIM con.
T card con.
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EDN
Q&A
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