Table of Contents - MoveOn Technology Co.
Contents
1. Two 2C interfaces Four universal asynchronous receiver transmitter UART serial prot 4 UART J including two high speed DM via UUART 4Mb s Two UIM ports Two MMC SD Card ports support SDIO graphics hardware acceleration 3D graphics core Special camera interface USB 2 0 compliant high speed USB core with limited OTG capabilities The MSM7227 multimedia features as follows 0 10 LCD controller Support 8 9 16 18 bits display interface up to FWVGA O0 20 Audio and Modem CODEC Support two stero decoders Audio support AMR NB AACE AAC eAAC windows media and more Page 7 of 20 IQ250 SERVICE MANUAL v0 1 Up to 8 megapixels camera 2D 3D image accelerate Support video encoding decoding function support MP4 H 263 H264 window media V9 real V10 Support video talk Support streaming media GPS support MS assisted MS based MS assisted hybrid and standalone GPS modes MSM7227 support agreement Support GSM R99 Support GPRS multislot class 12 CS1 4 Support EDGE multislot class 12 cs1 4 MCS1 9 Support WCDMA R99 Support HSUPA HSDPA R5 DL 7 2Mbps 2 3 2 Power manage unit pm7540 The PM7540 device integrates all wireless handset power management general housekeeping charge control and user interfaces into a single mixed signal IC The power management portion accepts power from common sources battery external charger adater UAB_VBUS coin cell backup and generates all the regulated voltages nee2. replacing the earphone Check the relating circuit for losing components eplace a new receiver then testing Re solder or change N Re solder or change figure 18 receiver fail processing flow chart Check around components of receive Check U600 Page 18 of 20 IQ250 SERVICE MANUAL v0 1 MIC Fail to record or work abnormally in testing mode Repair as the following Check the mic for improper soldering or replace the microphone and test Check the relating circuit for losing components welding bad Check MIC if solder ok Check U500 and the circuit of micbias N Re solder or change Check the voltage of Micbias Check the related circuit of MIC Change U600 Figure 19 MIC fail processing flow chart EARPHONE If the earphone can not be tested normally when inserting and pulling out or if the earphone can not hear a voice or if the microphone or the receiver or the keypad work abnormally repair as the following Check the soldering of the earphone s socket for reliability check the relating circuit for losing components welding bad lt Page 19 of 20 IQ250 SERVICE MANUAL v0 1 EARPHON FAIL connector and related circuit of MIC Re solder or change Check the bias and Check U500 and U1203 related circuit Change U600 Figure 20 earphone fail processing flow chart Page 20 of 20
3. the phone can be serviced at this level and the service technicians will try their best to solve various problems Level 3 is for problems that cannot be solved at level 2 These problems will be solved by the research and development center of the manufacturer Page 2 of 20 1Q250 SERVICE MANUAL v0 1 Important statement The target readers of this service manual are experienced technicians familiar with similar devices This manual is intended to technically assist electronic and mechanical maintenance It is suitable for 1Q250 Level 2 maintenance technicians If the problems cannot be solved with the help of this manual please contact the Customer Support or the Research and Development Center of SIM Technology Ltd Thank you Page 3 of 20 IQ250 SERVICE MANUAL 1 Specifications Basic product information Item Remark Operating system Android 2 2FroYo Network and radio technology Dual band 7 2M bpsHSDPA UMTS850 2100 7 2M bps HSDPA Quad band GSM GPRS EDGE GSM Quad band 850 900 1800 1900MHz GPRS EDGE Phone factor Bar type classical Pocket PC Size mm 105 3 57 13 2mm Weight g TBD Display size resolution color 3 2 HVGA TFT LCD Touch panel Touch lens Yes Touch Lens Resistance screen Front side N A keypad left side volume up down top side Power key Main Camera 3M FF Sub Camera N A Bluetooth Bluetooth 2 1 EDR GP
4. 1Q250 SERVICE MANUAL v0 1 IQ250 SIM Technology Ltd Table of Contents EE O Mg innucactencnnns 2 1 SPECIGAHONS zaaraenendnannerdnenennatnende ananas Nesten es Nen Ramen nend 4 2 Working PAINGIDIE St nesnerendereieend Meditate teiten 5 3 Disassembly steps naars etende Nonnen Beense 10 4 IKOUBISSRGONNG zis kancerdeersenr deren Nenoeaidkekteenernksendeeddnen 12 4 1 Diagram of Troubleshooting eneen nennen 12 NO eden N E ien ntiteedenttenidebmekaedandkedhedt 14 Repair of failure mbaseband Vp eenen 14 Page 1 of 20 1Q250 SERVICE MANUAL v0 1 Preface IQ250 will comply with Android2 2 requirements and also features the GSM850 GSM 900 DCS 1800 DCS 1900 quad bands and WCDMA 3G phone function Furthermore it will also supportthe most advanced multimedia features including WVGA LCD 5 0 mega pixels camera MMS MP3 Micro SD card Maintenance services for this product are divided into three levels 1 Level 1 is for elementary services With no specialized maintenance tools available only empirical maintenance service is offered Usually a heat gun is not required and an IC problem cannot be solved IC troubleshooting is offered only when necessary with the manufacturer s permission Level 2 is intended to solve problems that cannot be solved at level 1 Ifnecessary specialized maintenance tools can be used such as the heat gun electric soldering iron oscilloscope and communications system analyzer Any element of
5. S Yes WiFi 802 11 b g Yes 802 11 b g USB USB 2 0 high speed charging sync Battery capacity 1100mAh Memory 512MB ROM 256MB RAM Expansion memory slot Supports up to Micro SD 32 GB Platform Qualcomm MSM7227 1 600MHZ FM radio Yes antenna on headset Speaker numbers handfree 1 speaker support handfree Network LED color NO Vibrator Yes stylus Yes Reset hole Yes Lanyard hole Yes audio jack Yes 3 5mm Motion Sensor Yes Proximity sensor Yes Compass Yes Talk time 180 210 mins Standby time lt 3mA Page 4 of 20 IQ250 SERVICE MANUAL v0 1 2 Working Principles 2 1 General Description The hardware frame system of IQ250 base on QUALCOMM MSM7227 the others parts including memory PMU WIFI BT controller and RF Transceiver RF PA etc The basic MSM7227 system solution consists of the MSM7227 RTR6285 and PM7540 ICs Figure1 1 is a diagram of the whole hardware system _ Ze En E a S co os Sa aos UART2Z UIMI UART3 UIM2 CHARGER Circuit cuit ze 7 2 a gt 2 5 ee f J Figure 1 1 2 2 view of the mainboard Page 5 of 20 1Q250 SERVICE MANUAL v0 1 Figure 2 2 1 is the frontal view of the mainboard Figure 2 2 2 is the rear view of the mainboard AP MSM7227 0 U600 WIFI BT FM Modem U1116 LCD Conn CN1002 Memory IC 0 U701Qj BT WIFI ANT PAD Motion Sensor IC Camera con
6. d 200Ma If the current is high please check if these main components such as MSM7227 Memory PM7540 PA are SMT fail Then check connectors for any possible pseudo soldering short circuiti improper soldering and so on If the current is normal please check as the following Page 14 of 20 IQ250 SERVICE MANUAL v0 1 Check U500 and Test TP582 if output 32K peripheral circuit Check the specific heck related voltage output see voltage circuit Check U102 and Check 19 2MHz if norma 8 end peripheral circuit est TP122 if output high leve Check U701 Yes Check U600 figure 12 power on fail processing flow chart Fail to write the SN Please check soldering of the usb connector Page 15 of 20 IQ250 SERVICE MANUAL v0 1 Failure of function in main board LCD display If the LCD of IQ250 display is not normal please check and repair as the following steps turn on the phone and the inner screen is black please check the back light circuit If the outer screen dose not work check the screen and connectors Firstly check the LCD and check the connector to main board for reliability Testing the circuit by replacing the LCD LCD display abnormal Check the connector CN1002 Re solder or change Check the power of LCD C1003 C1002 Check PM7540 U500 Re solder or change Check U600 Re solder or change Check EMI U1003 U1004 U1006 N N figure 13 display abnormal processi
7. ded to power the appropriate handset electronic It monitors and controls the power sources detecting which sources are applied verifying that they are within acceptable operationaldlimits and coordinates battery and coin cell recharging while maintaining the handset electronics supply voltages The PM7540 power management module can provide 17 programmable of voltage circuit to produce all sorts of voltage for handset including 14 uses by 1Q250 Output voltage feature Driver Name Voltage In Bounre used for O Max Page 8 of 20 1Q250 SERVICE MANUAL v0 1 2 3 3 RTR6285 RF TRANSCEIVER IC DEVICE The RTR6285 device is a highly integrated radio frequency CMOS transceiver IC The RTR6285 device support E GSM 900 DCS1800 PCS1900MHz WCDMA 2100MHz four bands signal paths including transmit circuit receiver circuit frequency synthesis circuit RF and related control circuit The GSM EDGE Rx paths start from the handset front end circuits GSM Rx filters and antenna switch module The four differential inputs through Low Loss Dual Band Filter enter receiver module of RTR6285 The downconverted baseband outputs are multiplexed and routed to lowpass filters whose passband and stopband characteristics supplement MSMA device processing The transmit path begins with differential baseband signals from the MSM device These analog input signals are buffered filtered by low path filter corrected for DC offsets amplified and then app
8. ection high resistance anti static bracelets gloves and clothes must be worn 2 Prepare disassembly tools Tweezers screwdriver T5 Page 11 of 20 IQ250 SERVICE MANUAL v0 1 4 Troubleshooting 4 1 Diagram of Troubleshooting Listen to Customer s feedback Make a judgment Explain the causes to the Customer Hardware trouble Software trouble Inquire according to the Download again based maintenance inquiry table on the method below below Note Any brand new problem that is encountered has to be solved based on the technician s experience The troubleshooting list contains the known faults of the ET960 which is for Level 1 service reference Special Notice Before repairing the mainboard please check to see whether or not there are missing displaced or damaged components 4 1 1 Chips and elements inside the mobile phone are driven by weak currents so the maintenance should not be performed within a magnetic field or with high voltage to avoid possible damage caused by heavy current 4 1 2 When troubleshooting the mobile phone follow the general operation rules Firstly the measurement meters should be correctly connected Then turn on and properly configure the meter The type of the fault should be Page 12 of 20 IQ250 SERVICE MANUAL v0 1 initially determined as well as the possible extension of the fault 4 1 3 The mobile phone is an integrated microelectronics product with delicate elements inside
9. lied to the quadrature upconverter mixers IC features Multiband multimode operation UMTS 800 850 900 UMTS 1700 1800 1900 2100 GSM EDGE 850 900 1800 1900 UMTS Diversity GPS GPRS EDGE compliant Direct frequency conversions from analog baseband to RF and vice versa Dedicated ZIF RF to baseband quadrature downconverters Dedicated ZIF baseband to RF quadrature upconverters RF AGC amplifiers filter and driver amplifier Dedicated gain control circuits Bias control circuits Integrated power detector Integrated thermomter Single line serial bus interface SSBI Selective circuit power down Available in a small thermally efficient package 2 3 4 GPS RTR6285 integrated GPS receiving module With LNA ALM 1412 together can achieve GPS function 2 3 5 BT WIFIIG AW GH600A is AzureWave Technologies Inc s product which integrated WIFI BT FM module General key features Integrates Broadcom solutions of BCM4325 WIFI BT FM SoC SDIO interfaces support for WLAN High speed UART and PCM for Bluetooth and FM 12C interface for FM FM line level analog stereo output available FM subsystem control through Bluetooth HCI interface Flexible Power Supply 2 3v 5 5v Multiple power saving modes for low power consumption Page 9 of 20 IQ250 SERVICE MANUAL v0 1 The detail circuit see belw 3 Disassembly steps Page 10 of 20 1Q250 SERVICE MANUAL v0 1 Introduction to disassembly tools 1 Anti static prot
10. n O CN1005 MOTO PAD 3 5mm earphone GPS ANT PAD Earphone PA O0 U12030 Receiver PAD O U12060 KEYPAD PO WER ON FPC Conn GSM PA ANT Switch RF Transceiver PMU U106 0 U1019 0 U3000 O U5000 Figure 2 2 1 SUB Camera O U10100 Figure 2 2 2 Page 6 of 20 IQ250 SERVICE MANUAL v0 1 2 3 Main circuit module 2 3 1 MSM7227 The MSM7227 device is fabricated using the advanced 65 nm CMOS process and is available in the 12 12 1 05nm 0 4mm_pitch 560 pin nano scale package The MSM227 device have two cpus one is High performance ARM1136JF S application processor at up to 600MHz the other is ARM926EJ S modem processor at up to 400MHz The QDSP4000 DSP controller also belong to the MSM7227 in charge of audio and video ect The core voltage and the interface voltage is seprate in the MSM7227 for low power The PM7540 is power manage unit provide the all voltages of the MSM7227 needs MSM7227 baseband controller module mainly characteristics as follows U 10 CPU 32 bit ARM1136JF S core based on CPU working frequency 600MHz 32KB instruction and32KB data cache 256 KB ARM117M L2 cache 020 MPU N 1 32 bit ARM926EJ S core based on CPU Working frequency 400MHz 32KB instruction and32KB data cache 0 3g External memory interface 256KB internal memory for graphics internal functions DSP etc Enhanced EBI1 memory support 200MHz bus clock for DDR SDRAM Oo 40 USER Interfaces
11. ng flow chart Turn on the phone and the screen is black then the circuit of black light may be abnormal Page 16 of 20 IQ250 SERVICE MANUAL v0 1 LCD display black Check the connector CN1002 Re solder or change Re solder or change these related circuit N Re solder or change figure 14 the LED of LCD fail processing flow chart Check the U1030 and related circuit Check the GPIO ot U500 R1035 motor If the motor does not vibrate or vibrate abnormally repair as the following Check the motor and connect part Re solder or change Re solder or change N Re solder or change figure 16 motor fail processing flow chart speaker If the speaker has no sound firstly check if mute mode is set or not If not repair as the following If the sound of the speaker is abnormal repair as the following Page 17 of 20 IQ250 SERVICE MANUAL v0 1 Replace the speaker and check again Check C954 C956 D951 D952 L951 L952 form soldering and breakdown It s necessary for replacement Speaker fail YES Change SPK eplace a good speaker No N C9541 al Re solder or change D951 D952 L951 JLO52 Yes No j Re solder or change Testing the signal of C954 U500 C956 on Yes Figure 17 SPK fail processing flow chart receiver Dial 112 and fail to hear a voice or the earphone has no sound in testing mode Repair as the following steps Check if the earphone is damaged Test by
12. so the service technician should get familiar with the chips elements and their specifications before any troubleshooting operation with the logic between the chips clear in mind During the troubleshooting circuit analysis careful inspection correct judgment as well as quick and accurate operation are required to prevent any man made malfunction and economic loss Repair operations should be performed after the type of the fault has been confirmed 4 1 4 Final testing or calling on trial Final testing or calling on trial are performed to check whether the mobile phone can operate normally again 4 2 Fault Identification The IQ250 posed of many parts including the mainboard tone chamber antenna module LCD module and battery Among them the mainboard is the core of the system Speaker motor and receiver are connected with the mainboard by means of pressure welding The microphone is of SMT type and is soldered onto the keypad The LCD is connected to the mainboard through the FPC connector Page 13 of 20 IQ250 SERVICE MANUAL v0 1 5 FAQ Repair of failure in baseband Failure in the beginning of the production line Fail to turn on the phone or to write SN Can not turn on the phone Please check as the following steps 1 Power on the main board and do not turn on the phone check if the current of the mainboard is less than 200UA or not 2 Press the turn on key and start the system the current should vary between 100mA an
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