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Chapter 7 Unit Circuit

7.1.1 System Overview

MT6260M is a monolithic chip integrating leading edge power management unit, analog baseband
and radio circuitry based on the low power CMOS process.

MT6260M is a feature-rich and extremely powerful single-chip solution for high-end GSM/GPRS and
EDGE-Rx capability. Based on the 32-bit ARM7EJ-S RISC processor, MT6260M

’s superb

processing power, along with high bandwidth architecture and dedicated hardware support, provides
a platform for high-performance GPRS/EDGE-Rx Class 12 MODEM application and leading-edge
multimedia applications.

TM

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Содержание ARIA II

Страница 1: ...1 ARIA II SERVICE MANUAL...

Страница 2: ...ly 3 Please use specified tools and equipments for servicing in which the parameters need to be calibrated with specified criteria Chapter 1 Specification Content 1 Brief Introduction 3 2 Exploded Vie...

Страница 3: ...3...

Страница 4: ...vel Charger AC Adaptor 5V 500mah Lithium Battery Standard 900mAh Bluetooth Version BT 3 0 HFG OPP Aria II Features Functions Dual SIM MT 6260M 24Mb 32Mb Fashion bar phone FM Moner detector flash Multi...

Страница 5: ...5 Chapter 2 Exploded View 1 Lens 3 Receiver 4 Front cover 5 FM antenna 7 LCD 9 PCBA 11 Speaker 13 Back cover 18 Battery 19 Camera 21 DOME 22 Keypad...

Страница 6: ...6 Chapter 3 Tools Power Supply Multimeter Solder iron Hot Air Gun Solder wire Flux PC Download cable Others Pick Screw Driver Tweezer Wrist grounding strap Antistatic gloves Cable...

Страница 7: ...Assembly 1 Disassembly Process 1 Remove the battery cover 2 Unfasten the 4 screws by screw driver 4 Remove the PCBA 5 Stick protection film for front cover 3 Prize up the back cover by pick 6 Stick p...

Страница 8: ...8 Finished 7 Remove the FM antenna by iron 8 Remove the speaker by iron 9 Remove the LCD by iron 10 Remove the camera by iron 11 Remove the keying film...

Страница 9: ...9 2 Assembly Process 4 Install the speaker by iron 3 Install the LCD by iron 1 Install the keying film 2 Install the camera 6 Remove the protection film front cover 5 Install the FM antenna by iron...

Страница 10: ...10 Finished 6 Install the PCBA 6 Remove the protection film LCD 6 Install the back cover 6 Fasten the screws 6 Install the battery cover...

Страница 11: ...ide B PCBA Side B Location of Components Mic Keypad Connector LCD connector J701 Side A Camera connector J702 T flash connector J404 SIM connector J403 U101 CPU 26Mhz U301 Light Emitting diodes Batter...

Страница 12: ...12 5 3 PCBA Layout side A 5 4 PCB Layout Side B...

Страница 13: ...13 Chapter 6 System Block Chart...

Страница 14: ...ess MT6260M is a feature rich and extremely powerful single chip solution for high end GSM GPRS and EDGE Rx capability Based on the 32 bit ARM7EJ S RISC processor MT6260M s superb processing power alo...

Страница 15: ...15 Chapter 7 Unit Circuit 7 1 2 Baseband CPU Data Transfer Interface Keypad Interface Audio Processing T T flash Data transfer control SIM Data Transfer control...

Страница 16: ...16 7 1 3 Keypad Input Interface 7 1 4 Output of SIM Card...

Страница 17: ...17 7 1 5 Display interface circuit Read write control signal Display control bus Led control signal...

Страница 18: ...18 The battery test Input battery...

Страница 19: ...19 7 1 6 Power amplifier ANT Start signal Power supply input Received signal output Radio frequency signal input...

Страница 20: ...dule for GSM900 and DCS1800 operation It offers complete handset transmitting and receiving function including transmitting RF transceiver to antenna and receiving antenna to SAW filter in a compact m...

Страница 21: ...21 7 1 7 I O Interface 5PIN Charging voltage input Sofware download port The data transfer...

Страница 22: ...or open circuit Cannot download Check if it is caused by the PC cable tools etc Power on NO NO NO NO YES YES YES No YES OK Replace or re config Check I O Connector Connect the cable check if the curre...

Страница 23: ...lock 26MHz Make the phone connect the power supply and find the current swing at 50 100mA END Check the power manage supply output VCCRE 1 8V VDD 2 8V AVDD 2 8V VTCXO 2 8V VMEM 2 8V VRTC 1 2V Replace...

Страница 24: ...e or reweld flash 26MHZ Check and replace system clock 26MHz Check the power manage supply output VCCRE 1 8V VDD 2 8V AVDD 2 8V VTCXO 2 8V VMEM 2 8V VRTC 1 2V Replace or reweld CPU Replace U101 MT6260...

Страница 25: ...replace CPU END Check and replace RF PA Audio PA Check if the capacitance varistor LDO tube leakage Use the touch method to check and replace the heat spare parts Make the phone connect the power supp...

Страница 26: ...the touch panel Check battery connector and battery touch point if is dropped or dirty Check the keypad if stuck or touch panel do not work to make the phone dead Check the CPU if is rosin joint or d...

Страница 27: ...13 th PIN of J701 have signal or not check 8 th digit cable status No display or display abnormality after power on Check LCD connector is OK or not Change LCD FPC Change or re solder U101 MT6260 Chec...

Страница 28: ...2 3 regular problem Upgrade software to check if can solve this problem Visual check if any corrosion or short circuit and use multimeter to check if any short circuit for single key Clean the place w...

Страница 29: ...8V to check LED can work or not Changed or re solder CPU MT6260 Key light can t work Use multimeter to check voltage of LED is OK or not Problem solve Expect bar model Check if circuit is broken Chan...

Страница 30: ...U MT6260 may be defective NO Replace SIM card MT6260 may be defective Insert SIM Clean or replace SIM connector Check if all the SIM pins are clean Resolved If SIM card is available Connect Power supp...

Страница 31: ...ion Replace the defective components Put a false antenna at RF PA IC to see if there s any signal Replace RF PA IC Make a false antenna at J501 check if there s any signal Saw filter is damaged replac...

Страница 32: ...the wave signal by oscillograph No sound or noise Remove the speaker and measure with multimeter to see if there s any sound Replace speaker The phone is in Silent mode Check if the volume is in lowe...

Страница 33: ...easure the signal with oscillograph under calling mode Receiver is low Check if LS401 is damaged Re weld clean LS401 Check if the receiver is broken or damaged Test if there s sound from receiver with...

Страница 34: ...Check if there s MIC cover 84666 and activate echo loop measure MIC MK400 voltage is 1 5V 0 7V Replace MIC Replace R505 or R506 Check if inductor R505 R506 is damaged Replace C526 C527 Measure C526 C...

Страница 35: ...capacitor C205 resistor R211 R208 be normal Replace or re solder CPU U101 MT6260 Remind error during charge Check charge protective tube Q201 be normal Check battery connector testing Pin if the bias...

Страница 36: ...put in check if the voltage of positive pole is around 3 6V Check charge protective tube be normal Replace or re solder CPU MT6260 No charge Does not charge no charge in Change battery Re flash SW Res...

Страница 37: ...harger connected Does not charge does not recognize charging Change battery Re flash SW Resolved NO YES YES YES YES YES Re solder or replace I O connector There is no symbol shows charging Power on an...

Страница 38: ...CPU Stand by short time Power on the phone check the if working current be normal no exceed 600mA Defective resolved YES YES YES Check and replace RF PA AUDIO PA NO NO YES Check if the components on t...

Страница 39: ...slot pin 4 VMC was 2 8V NO Re solder T flash slot NO Check if the voltage of T Flash pin3 pin5 pin7 to the ground was around 0 7V with multimeter diode column Measure if there is pin short for the T f...

Страница 40: ...n work well Power on the PCBA and open the camera function Check if C706 C708 have 2 7V or 1 5V voltage Upgrade SW to check if it was related to SW Check if camera slot appearance was ok or if there i...

Страница 41: ...l 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 And check device manag...

Страница 42: ...42 9 1 4 Select Options Format FAT DISABLED and please do NOT select validation...

Страница 43: ...43 9 1 5 Please select Format FAT 9 1 6 Select Options Backup and Restore then select the Backup Download format Restore Select Format FAT...

Страница 44: ...44 9 1 7 Click the Download Agent and select the file MTK ALLInOne DA bin Select this one...

Страница 45: ...45 9 1 8 Click the Scatter config file and select the scat36_11A_GEMINI txt Select this one...

Страница 46: ...y click Download and connect the cable with handset then insert the battery press the power on button the gray red blue green and gray progress bar shall appear Then upgrade would be completed when ap...

Страница 47: ...47 9 1 11 Connect to phone red progress bar 9 1 12 Downloading is in process blue progress bar...

Страница 48: ...also upgrade software fail Root cause red scroll 100 run completely when upgrade software the detail as figure 1 also it prove power supply clock is normal and defective typical issue is focus on CPU...

Страница 49: ...de software details as figure 2 Root cause the power supply and clock both work on as common during upgrade software The typical defective issue as poor soldering or go to fall other way as exchange C...

Страница 50: ...ndset until the screen is clear 4 Vibrator Press start then the vibration shall start 5 Loud SPK Press start the speaker shall work 6 Ringtone Press start the ringtone shall be played 7 LED Press OK t...

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