LOGO EV730 Service Manual

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EV730 Service Manual

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Summary of Contents for LOGO EV730

Page 1 EV730 Service Manual...
Page 2: Table Of Contents
CAUTIONS 1、 Please read this service manual carefully and make sure all elements of anti-static are in place before the repair work is carried out. 2、 Servicing and alignment MUST be undertaken by qualified personnel only. 3、 Please use specified tools and equipments for servicing, in which the parameters need to be calibrated with specified criteria.
Page 3 Chapter 1 Specification Features & Functions Dual SIM Dual Standby Single Connection Fassion Music Phone FM Radio BT (Call & Data transfer) Multi-Media application Camera：0.3M USB data transfer T-Flash（Support 8G T Card） 2.2 TFT QVGF(240*320) MP3、MP4、3GP Breathing Light External Speaker Specification：...
Page 4: Exploded View
Chapter 2．Exploded View...
Page 5: Tools
Chapter 3 Tools Solder iron Hot Air Gun Power Supply Multi-meter Solder wire, Flux, Screw Tweezers Driver Cable Wrist grounding strap Antistatic Pick gloves Others（Figure 7） PC, Download cable...
Page 6: Assembly
Chapter 4 Disassembly & Assembly 1. Disassembly Process Push the battery cover from left to right Unfasten the 6 screws by screw Prize up the back cover by pick Take out back shell. Stick the lens shield Stick the LCD Shield...
Page 7 Remove the screw. Take out PCBA Take out keypad. Finish 。。。。。。。。。。...
Page 8 2. Assembly Process Install the keypad Install PCBA Remove LCD Shield Fasten the screw Install the back shell Remove the lens Shield.
Page 9 Tighten the front & back shell. Fasten the screws Install the battery cover. finish……….
Page 10 Chapter 5 Picture of PCBA 5.1 Side A PCBA（Side A）Location of components Keypad Side A Connector PCBA (Side B) Location of Components U501 PA IC U705 BT IC J502 SIM J503 SIM SKY77550 MT6612 Connector Connector J401 Earphone Connector J302 U801TV IC I\O Connector MT5192...
Page 11: A&B Of Pcba Layout
5.2 PCBA Layout Side A Side B...
Page 12: System Block Chart
Chapter6 System Block Chart...
Page 13 Chapter 7 Circuit Map 7.1.1 Baseband & CPU Audio Camera Keypad Other Interface Bluetooth...
Page 14 7.1.2 Baseband – Keypad 7.1.3 Clock 32.768KHZ Circuit...
Page 15 7.1.4 CPU to Flash ③ Pin inside BGA 16 digit data line match list CPU Data line CPU BGA Pin Flash Data line Flash BGA Pin AK28 AJ25 AN31 AL27 AP30 AN29 AL29 AK26 AM30 AM26 Ed10 AK30 Ed10 Ed11 AP32 Ed11 Ed12...
Page 16 7.1.5 SIM data output SIM 2 Clock SIM 2 Data SIM 1 Clock SIM 2 Reset SIM 1 Reset SIM 1 Data 7.2 MT6253 CPU Power output item voitage current Vcore 1.2v 200ma 2.8v 100ma Vadd 2.8v 150ma Vtcxo 2.8v 20ma Vrtc 1.2v...
Page 17 7.3 Battery connector Charging Positive Pole input Temperature control 7.4 Bluetooth Module Brief Introduction of Bluetooth: Bluetooth technology, a short distance wireless communication technology, can simplify the communication between palmtop computers, notebook computers and mobile phones, can also simplify the communication between these equipments and the Internet. The data transfer between modern communication equipments and the Internet can be faster and more efficient and the application of the wireless communication is accelerated.
Page 18 7.5 Audio PA U401 Battery Power Supply Audio Input Control Audio Output 7.6 I/O Interface (5 PIN) Data Transfer Data 数据传输端 Transfer Data Transfer 数据传输端 Data Transfer Analog Switch...
Page 19 7.7 Power Amplifier Antenna Power Control Power Supply Signal Input RF Input SKY77550 GSM 900M Output DCS1800M Output...
Page 20 7.8 FM Radio Modules The QN8036 processes the FM broadcasting signal that received from antenna (FM/ANT) ,produces and sends audio signals (FM-INL, FM-INMR) to the audio process module of CPU for decoding, where the electrical signals of audio are made. FM Audio Output Control Signal Input...
Page 21 7.10 Driving Circuit for breathing light NS3189 is the breathing light driving IC that developed by SI-EN Technology. All modes of SN3189 can be breathing with music’s rhythm. The 6-way of RGB output can support upto 256 levels of individual lightness control, with 40 mA output for each output，and support multi-LEDs in parallel connection.
Page 22 7.11 TV Module The signal is received by antenna (E901) and sent via different channels (VHF, UHF) to the TLG1100-GC-CA(Telegent) Chipset to be processed and transferred to CPU TV Signal Receiving Input TV 2.8V TV Signal Processing Close PIN TP for monitoring 2.8V 1.2V...
Page 23: Trouble Shooting Guide
Chapter8 Trouble Shooting Guide Download Problem Cannot download Check if it is caused by the Power on PC,cable,tools etc. Replace or reconfig. Replace Check I/O Connector re-solder the I/O connector Connect the cable,check if Disconnect cable the current is normal (about and check if the chipset 30 mA) is over heat.
Page 24 SIM cannot be recognized No SIM Clean or change SIM Check Slot contact of SIM Slot Check if SIM is broken Problem Solved Change SIM Check the current by CPU MT6253 is probably broken using power supply or not soldered well. MT6253 maybe faulty Change U101 MT6253...
Page 25 Cannot Power On Cannot Power On Resolder or replace If the contact is J201 broken? Replace the Problem Solved Can power on by using battery Check if the current is Software upgrading about 30-40mA MT6253 maybe faulty Replace U101 MT6253...
Page 26 Receiver no sound Receiver no sound Check LS402 Does hand-free broken. function work? Re-solder clean Check if the receiver Replace LS402 is soldered well. receiver Remove receiver and test by the “buzzer” of multi-meter to hear if Replace receiver there is any sound. Test LS402 with...
Page 27 No Ringtone No Ringtone Remove receiver and test “buzzer” *#84666*#, option 7, multi-meter to hear if there test if the ringtone is is any sound. normal. Check if the phone is Quit vibration Replace set to vibration or mute or mute mode. component.
Page 28 Display Problem Can power on but no display or display is abnormal. Check if the LCD is broken. Check Clean resolder interface is soldered J701 well. Problem Solved Replace LCD Check if the pin13 of J701 Upgrade the software has start signal and the dataline is normal.
Page 29 Charging Problem Charging Problem charging Check the charger symbol or not. or cable. Connect charger and input Replace Replace charger *#84666*# ， ADC current connector or cable. should be 0.40A. Connect charger without battery, Upgrade test if the positive pole of battery software contact has 3.6V Replace U201 and R212.
Page 30 No output voice output voice Check if MIC Replace MIC is broken Remove MIC and input*#84666*#， Check if B404 or option3，check if MK400 has 1.5V B411 is broken power. Replace re-solder CPU MT6253...
Page 31 Camera Problem Camera problem Try to reinstall camera module. Power select Upgrade camera function，check if software. B601 and C606 hav 2.7V or 1.5V power. Visually check if Replace the camera slot is resolder broken. camera slot. Replace resolder CPU MT 6253...
Page 32 T-flash cannot be recognized T-Flash card cannot recognized. Visually check if Replace the T-Flash Slot T-Flash Slot is broken Resolder Check if the VMC of T-Flash Slot. 4pin of T-Flash slot has 2.8V or not. Check the pin3#, 5#, 7#of SIM Check if there is any slot if the voltage is 0.7V.(By short cut between the...
Page 33 Keypad no function Keypad no function keys Some keys Single Key no function function functions Clean the key. Upgrade Check the circle of the faulty software. key if there is 0.7V voltage to the ground.(By diode mode) Clean the short Check if there is any liquid leak corrosion or corruption.
Page 34 Bluetooth Issue Bluetooth doesn’t work. Upgrade Software. Check if C706 have Check if BT V2.8 and 3.7V power supply. BT V1.2 are normal. Resolder or replace MT6612. Replace filter U703 Resolder or replace MT 6253...
Page 35 Signal Issue No signal or weak signal. Visually check if the Replace the damaged antenna is broken or components. disconnected. Wire to the input and output of Replace U502 U502, to see if there is signal Wire to the input and output of Z502、 Replace filter Z503Z504,check if there is signal...
Page 36 Chapter 9 Firmware Upgrading Guide 9.1 Firmware Upgrading 1. Install USB driver The maximum downloading speed can be up to 921600bit/s when using USB-Serial cable. The driver need to be installed before using the USB cable. Please keep the USB cable unplugged when installing the driver. Plug the USB cable when installing is completed.
Page 37 4. Select “Options”-“Format FAT (DISABLED)…” and please do NOT select “validation”. 5. Pls Choose “Do Not Format FAT”. 选择此项...
Page 38 6. Click ‘’Download Agent’’ and then choose file ’’MTK-ALLInOne.bin’’ 双击 7. Click ‘’scatter file’’ and then choose file ’’scatinn-09B_GEMINI.txt’’ 双击...
Page 39 8. Power off the handset, remove the battery, click “Download”, and connect the cable with handset, then insert the battery, press the power on button, the red and blue progress bar shall appear. 9. Downloading is in process.
Page 40 10. Downloading is completed.
Page 41 1. write IMEI to the slave phone of MGSM 41B phone to give an example. Firstly, plug the correct upgrade cable to the computer. This is necessary, or the software will not be run normally. Double-click the logo in figure 1-1 to run the IMEI Writer in a Windows XP operation system. figure 1-1 For the first time you run IMEI_Writer in the computer, figure 1-2 occurs.
Page 42 1.1 input the IMEI of the slave phone referring to figure 1-4, click “Restart”, after 3 seconds plug the slave phone cable connector to the phone and power on the phone. Click here to change database file Input IMEI here Figure 1-4 1.2 after several seconds, figure 1-5 occurs to show the slave phone is written to the phone successfully..
Page 43: Cit Testing
2.3 after several seconds, figure 1-5 occurs to show the slave phone is written to the phone successfully. 3 write the IMEI of another phone If the right database file has already been choosed, click the “restart”, input the IMEI of the phone, click “Restart”, after 3 seconds plug the phone cable connector to the phone and power on the phone.
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