the given instructions. while every effort has been made to ensure the accuracy of this document, some
errors may exist. please keep in mind also that this documentation is continuously being updated and
modified, so always watch out for the newest version.
CAUTIONS
Please refer to the phone’s user’s guide for instructions relating to operation, care, and maintenance,
which include important safety information.
1
Servicing and alignment must be undertaken by qualified personnel only.
2
Ensure all work is carried out at an anti-static workstation and that an anti-static wrist strap is
worn.
3
Use only approved components as specified in the parts list.
4
Ensure all components, modules, screws, and insulators are correctly re-fitted after servicing and
alignment
5
Ensure all cables and wires are repositioned correctly electrostatic discharge can easily damage
the sensitive components of electronic products. Therefore, every service supplier must observe the
precautions which mentioned above.
GENERAL REPAIR INFORMATION
1
Make sure your testing equipment is functioning properly before beginning repair work.
2
Before starting repairs you must observe ESD precautions such as being in your ESD protected
area and connecting your wristband.
3
Use gloves to avoid corrosion and fingerprints.
4
Cover windows and displays with a protective film to avoid dust and scratches.
5
Use a lint-free cloth to clean the LCD.
6
When cleaning the pads use a soft cloth\ESD brush and isopropanol. Do not use a glass fiber
pencil: this scratches the surface and will corrosion.
7
Non-faulty mechanical parts(except shielding lids and bent parts or soldered components).May be
reused if they are not soldered.
8
When removing the shielding lids make sure to replace them with new ones, otherwise the
high-frequency leakage can affect the device.
9
Always use the original spare parts.
10
Check the soldering joints of the parts concerned with regard to the fault symptom. And resolder
them if necessary.
11
Remove excess soldering flux after repair.
12
Observe the torque requirements when assembling the unit.
13
Please aware that some malfunctions may be software related and solved by an update
Chapter 1
EXPLODED VIEW AND COMPONENT DISPOSAL
EXPLODED
Содержание Zoey
Страница 1: ...BLU Zoey 2 4 Service Manual ...
Страница 5: ...SERVICE TOOLS ...
Страница 6: ......
Страница 8: ...Chapter 2 SYSTEM BLOCK DIAGRAM ...
Страница 9: ...Chapter 3 INSTRUCTION OF THE UNIT CIRCUIT Circuit instruction of CPU ...
Страница 10: ...CPU input of the keypad The joint circuit of the f master and the FLASH data ...
Страница 11: ...Bluetooth control and data transmit port of master ...
Страница 13: ...CPU voltage and current reference Battery connector ...
Страница 14: ...Audio frequency PA I O connector 5PIN To LoudSpeaker ...
Страница 15: ...RF IC Build in MT6260 RX from RF LNA TX Signal To RF PA Logic Ctrl Crystal 26MHz Power Supply ...
Страница 16: ...RF PA IC ...
Страница 17: ...FM radio ...
Страница 18: ...SIM card circuit ...
Страница 19: ...Chapter 4 PCB Layout chart PCB layout SIDE A PCB layout SIDE B ...
Страница 20: ...RF PA CPU MT6260 Charge Circuit Micro USB Loud Speaker SIM2 T Flash Card SIM1 ...
Страница 21: ...Chapter 5 TROUBLE SHOOTING Test flow chart of test SIM card ...
Страница 22: ...Test flowchart of cannot power on main ...
Страница 23: ...The test flowchart of head phone ...
Страница 24: ...Test flowchart of incoming call with no ring ...
Страница 25: ...Test flowchart of no display or display abnormally ...
Страница 26: ...The test flowchart of download failed ...
Страница 29: ...Choose Auto Format FAT ...
Страница 32: ......
Страница 33: ... Check if the SW is correctly 8 Power on the phone and input 37 check its version number on the first option ...