FLY DS 110 Service Manual Download Page 1

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DS 110 Service Menu

Version number: V1.0

Draft

Ren Mingwei

Auditing

Xilin

Authorize Zhao Gang
Date 2010-6-18

Shenzhen IFLY Communication Technology Co., Ltd.

Summary of Contents for DS 110

Page 1: ...DS 110 Service Menu Version number V1 0 Draft Ren Mingwei Auditing Li Xilin Authorize ZhaoGang Date 2010 6 18 Shenzhen IFLY Communication Technology Co Ltd...

Page 2: ...Audio Frequency 16 3 5 Baseband common malfunction 17 4 Reference for maintenance 21 4 1 No Signal 21 4 2 Phone does not power on 21 4 3 LCD trouble 21 4 4 Sound trouble 21 4 5 Keyboard malfunction 21...

Page 3: ...110 1 1 About DS 110 Phone DS 110 mainboard is based on the MTK platform designed to support dual band which supporting the FM the mainboard system consists of the base band CPUMT6223D EN71PL03280 70C...

Page 4: ...DS 110 Service menu 1 2 Distribution of the mainboard components 2...

Page 5: ...ransmit TX is composed of the modulation loop power amplifier and antenna switch PLL is mainly in the internal AD6548 I Q signal first enters into the AD6548 after entering the PLL the signal is modul...

Page 6: ...switch or matching network CheckTransceiver whethe there is any RF output signal Y VBAT PA_EN N BANDSW_DCS V APC are they OK Check Transceiver Y External N Y Replace PA Check CPU Replace Transceiver...

Page 7: ...DS 110 Service menu IQ signal waveforms of transceiver in transmit state IQ RF interface spectrum analyzer is as follows GSM transmit signal 5...

Page 8: ...DS 110 Service menu DCS transmit signal PA EN waveforms of PA in transmit state PA EN 6...

Page 9: ...DS 110 Service menu PA BAND SW waveforms PA BAND SW GSM PA BAND SW DCS 7...

Page 10: ...DS 110 Service menu PA Vramp waveforms Vramp pcl5 Vramp pcl 19 8...

Page 11: ...X filter N Check the corresponding power supply and circuits of 26MHZ Y Replace Check Transceiver External RC components Transceiver 2 4 4 The maintenance process of Receive malfunction Maintenance pr...

Page 12: ...mal if normal Transceiver can be judged of damaged N Check PA and the paths ahead Signal waveforms refer to the following Output signal of Signal generator Input GSM CH62 channel receives the signal D...

Page 13: ...put pin of Transceiver the state of receiving IQ signal The signal Transceiver received from CPU used to access the internal register of Transceiver The corresponding waveform is as follows IQ Signal...

Page 14: ...DS 110 Service menu 3W SDATA 3W SCLK 12...

Page 15: ...enu 3W LE 26M clock can be measured by using the ACCoupling The AFC automatic frequency control from CPU to the crystal oscillator makes crystal oscillator output accurate 26MHZ to Transceiver 26M Out...

Page 16: ...DS 110 Service menu VAFC TCXO output 26MHZ 14...

Page 17: ...Interface 26M 52M operation clock Analog baseband contains UMT6223D analog baseband chip audio baseband codec and power management Four major functional blocks integrated internal Audio codec includi...

Page 18: ...aseband chip that is UMT6223D starts to run and roll polling its ROWX pin pitch up its PWRONIN pin then you can release the boot key This is the initial boot process 3 4 Audio Frequency The sound qual...

Page 19: ...onding First check whether the serial port of PC and cell phone is unrestricted if not it is caused by being lack of devices or empty solder of power manager USB con and peripheral resistance Measure...

Page 20: ...d Eliminate any reasons for not download except the cell phone Yes Check whether it is the problems of allocation of procedure download cable power supply software PC phone Check whether the 5pin conn...

Page 21: ...DS 110 Service menu 3 5 3The signal waveform Chip select signals CS Screen reset signal LRST 19...

Page 22: ...DS 110 Service menu Screen Write signal LWR About the screen first find the problem whether is mainboard or screen by adopting replacement method then focus on checking the LCM CON welding 20...

Page 23: ...display interface and nearby resistance row as if it is still abnormal check the pad whether it is of short circuit 4 4 Sound trouble DS 110 audio processes in internal CPU focus on checking the Audi...

Page 24: ...tools Operation Manual Reference _MTK_ 5 3 write SN Operation Manual Reference _MTK_ 5 4 Calibration Operation Manual Reference _MTK_ 5 5 Testing Operation Manual Reference _MTK_ 5 6 Function testing...