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Contents
1. 2 Cura m mm H 11 im o gt B wwe m me gt 4 Cae m m T m uam nan im om n gt uade m ave a mre to une ure m i gt a ip m i E gt Jb Came Dam Chiara m 1 i umm gt nan E mmm 22 g SEG i 3 Sm 3 m Lm iz x i B B 5 ET i 2 3 5 E 1 Bn 8 gt Cere 5 11C 2N 20 m lt uru m mn did asqa Dr nave m Canas mar m umm m Po UD mer POWER SUPPLY CAM E RA Output pin POKER APP m 28 SENSOR A2 VDDCAMDO 1 5 SENSOR B9 VDDCAMDI 1 8 SENSOR FPC lt rustem gt anar m gt anmam m g2. Dl mm em wm me lt TETI mr gt t ue 8 a 1 mw oan Bi 111 E 506810 Platform Refe Berkley Yu 2011 06 09 Hardware DEPT Bobin hang 2011 06 09 2011 06 09 Spreadtrum communications Inc gt mu i nc 20 1 SWN SW_P ANT 0 1 WIFI 25 M 1 0 ange to hws408 d ms 2200 400000 005 F BA 4 10ppm 10 5 3225 21596 TST SC6810 Platform_Reference_SCH_V1 0 0 2011 06 09 DEPT um communications Ine mop mme h CLOSE ANTENNA IC TRACE 12MIL HW i Emm ELEME war m wo cw ALL ATOR zu E m m c g D SERR
3. Page 11 of 13 SIM Card Circuit Switch of dual SIM cards is integrated into baseband use 3 in socket for sim amp T card 8 8 F gt s u 2 m 2 8 5 2 5 5 gt gt e z 2 2 5 5 5 zi 7 2 a 1 6 18 MES 2 ATA SIM1 DA 1 8 1 8 G sensor Circuit Page 12 of 13 VDD18 1612 SENSOR MOTION LIS3DH 6 G INT ET I2C0 SCL amp 12co spa Page 13 of 13 Chart of Troubleshooting 1 Cannot download Connot download Check the connection among Download Cable and PC change another one check wherher it is ok or not Y N Check the USB connector is ok or not 14 Change 1801 Re welding it Check the power supply and the output of U100 lo Change U100 or Re welding it Test C446 to check the 26M clk is ok or not Change 26M crystal 401 or re welding 0400 Test the output of 32 768 crystal ur Change 32 768K crystal X200 Check the wilding between U100 andU500 2 No ring Setting rightly and check spk Re welding or change it Check All the individual components of SPK path m Re welding it Re welding or change U100 3 No Vibration Setting rightly and check MO
4. 3 2 D Data can be switched in Each Group Compat to2csMCP VDDNF 1 8V VDD MEM 1 8V B 004 NC 5 1K R32 USB2 0HIGH SPEED DOWNLOAD R32 MOUNTED USB2 0 FULL SPEED DOWNLOAD USB Download Mode Select SCH V1 0 0 SC6810 Platform Referen Berkley m 2011 06 09 Hardware DEPT bin em 201040 Spreadtrum communications Inc Robert Liang 2011 06 09 oema um DERI w HEAD EAR HEAD MIC Lap i 1 i 17 SPEAKER CIRCUIT SENSOR LIGHT amp DISTANCE SENSOR e Hii m QC ADDRESS CM3623 0X20 OR 0XBO STK3101 0X90 9900 0X72 Accelerometer LIS3DH 12C ADDRESS E 4 0x32 PIN1 aaen mxc6225 2A i RECEIVER CIRCUIT eee Pat 506810 Platform Reference SCH V1 0 0 AGENDAS TOS EISE BEI ORE Berkley Yu 2011 06 09 hang 2011 06 09 ane 2011 06 09
5. N N Check All the individual components of RF circuit 9 Re welding it ur N Check whether the RF PA U407 is normal Change or re welding U407 Check whether the 0401 and U405 U403 is normal gt Change or re welding it Change or re welding U400 7 WIFI BT abnormal Wifi bt abnormal Check All the individual components of wifi bt circuit Re welding it PE Re welding or change U1003 then check wifi bt s normal gt change U100 or re welding it 8 ATV FM abnormal ATV FM abnormal Check whether the ATV ANT has good contact H Re assembly it v Take off camera moudle then check ATV again gt change camera moudle or re welding it or re download software 17 Check All the individual components of ATV circuit Re welding it Rewelding or change U1301 Safety Precautions Repair Precaution Repair in Shield Box during detailed tuning Take specially care of tuning or test because specipicty of cellular phone is sensitive for surrounding interference RF noise Be careful to use a kind of magnetic object or tool because performance of parts is damaged by the influence of manetic force Surely use a standard screwdriver when you disassemble this product otherwise screw will be worn away Use a thic
6. 0 J Page 9 of 13 uJ FM Module 100nF 1023 100 11203 N 1 5 9 1020 oe LuaN LOUT 8 _ LNAP 13 _ ROUT 100pF 1 1 SCLK 885 jo IC FM 5802NM gt 1020 1K IC 20 E o o 8 Camera Module Page 10 of 13 C1024 0121011 C1021 100nF AIL 2 1 AIR 2 1 Et FLASH CAM 7 T v FLASH a I2Ci SDA 1117 5 1261 ta 7 7 _ 1 1 11 0 1 CCIR_EACK_PYWDN 7 3 CCIR 7 11 11 11 1 VDDCAMA 7 1 2 CCIR 7 111 m a 1 7 4 cer 1 11 ds o CCIR 17 111 a6 9 CCIK T 11 17 CCIR_DO4 7 11 18 _ CCIR_DOO 7 111 19 2 CCIR DOS 7 11 2004 7 11 21 cet no 7 11 2 TYDDCAMD1 7 CCIR FRONT PWON 7 CAM FPC 24P AF uai VEDCA zi 2 q VDDCAMA CWO S A 13 me E SZ1005 750T 3 100nF IO Interface IO applies 5pin standard interface which realize the functions of USB charging and download 3 8 vcuc 28 USB DM 2 8 USB DP gt 4 8 820 VR800 TVS800 5801
7. 8 2 8 TOOMA 78 VDDCAMDI 2 1 8 2 8 3 3 100n 8V VDDCAMA 8 2 5 2 8 3 0 150n 2 8V AVDDBB 2 8 2 9 3 0 3 1 60mA 3 0V AVDDVB 2 9 3 2 3 3 3 4 100nA 3 3V VDDUSB 3 1 3 2 3 3 3 4 60mA 3 2 6 2 873 0 3 2 2 8V VDDRTC 1 5 1 6 1 7 1 8 1 8V VDDCORE 0 7 0 8 0 9 1 1 1 2 1 3 400mA 1 1V VDDARM 0 7 0 8 0 9 1 1 1 2 1 3 500mA 1 2V E RU DEPT communications Inc 2 GSM900 j dpedance be 50ohn E i e FST 4k F PA MODULE ramp network 08 RRITCXO For SC8810 mount all comps in this D For SC6820 NF all comps in this area FE A Ae C7 Lm 1 D EDGE U0407 gt RF9812 VC7810 QBand U0407 gt RF9802 DBand U0407 gt RF9801 IGSM QBand U0407 gt RF7182D RF9812 RF9802 SC6810 Platform Reference SCH V1 0 0 Berkley Yu 2011 06 09 Hardware DEPT Spreadtrum communications Inc
8. current gt 0 8mm BB_POWER All trace connected to the MOSFET should be as wide as possible CHARGE Only for Li ion Battery BATTERY LX External DCDC 4 7uF C341 10uF un 3 cM is PA C2 i LDO Output Voltage V Output Used Voltage pati L VDDIS 2 1 5 1 8 2 8 200mA 1 8V VDD25 2 5 2 75 2 9 3 0 60mA 2 VDD28 8 2 65 2 8 3 0 200mA 2 ec VSIMO 8 2 9 3 0 3 1 60nA 1 8 3 0V E VSIM 8 2 9 3 0 3 1 60mA 1 8 3 0V ete eme VDDSIM2 2 1 8 2 8 3 0 200mA 2 mus 1 VDDSIM3 2 1 8 2 8 3 0 200mA N A 2 VDDRFO 8 2 15 2 85 2 95 200mA 2 85V VDDRF1 8 2 5 2 85 2 95 200mA VDDMEM 8 300mA ae VDDA 8 80mA VDDWIFIO 2 1 8 2 8 3 3 200mA 3 3V a VDDWIFII 2 1 8 2 8 3 3 200m 8V VDDSDO 8 2 5 2 8 3 0 150mA 3 0V VIO_0 2 8V VDDSD1 8 2 5 2 8 3 0 150mA VDDCAMDO 3 1 5 1
9. 5010 0 am MEMORY EEE 48 mio sm LI ru mamom De gt mamom mamon 5010 2 SPI yn e ovens sri verom soon amas E mro vestes UART e ex ana mm cum gt Es seu El past sw L8 lt Imam m m SIMO pnr M gt smor SIM suec rm on SIM3 gt si HE Oam m TP OPTION omen gt minme cu GPIO ima BL moon EE SYSTEM cauere LIS gt se rm CLK gt E 12 1 For 12 0 For G M L Sensor BT CODEC snam gt masa 12C2 For amp Hardware DEPT Spreadtrum communications Inc unaren 44 34 55 1021 8 4 f 8 5 E i it 0111 3 dad F j 444444 444 3 D ANALOG Hardware DEPT Spreadtrum communications Inc CHARGE ry 1 should afford 1A current 0 8mm should afford 1
10. E D Er 25 aly lt ir Cmm o oar 4 1 20 2 8V 2 8V CAWERA ATV_26M C1319 100pF manna 4i io AUDIO ANALOG OUT i lt Company Name gt ram By Drawn Date lt Title gt Checked By gt KhededDatp i ms m 7 Kee Code AO Drawing NumbercReyisibn gt Released mo Release Seale di Signal Flow and SCH Describe RF Part Block Diagram of the RF Section RF PA amp SW RF VC5282 TRANCEIVER SR1019 RF Block Diagram Signal flow of the RF Transmitting Part 1 seria ramp ne two rk oue 2 DES PCS TD_EN 4 0 10 ca BUA lt venum IN 46 omm n Page 1 of 13 Signal Flow of the RF Receiving Part Receiving path is shown in the following figure g bd i Pd Y 1 3 id Ee i 1 4 i 4 21 Hir 1 m om m z sz i E 1 i i u 508810 4 5 1 mount all comp in this gie all comps in this area Baseband pa
11. SD on product Because most of ESD are packed by box and aluminum plate to have conductive power they are prevented from static electricity You must maintain electric contact between ESD and place due to be set up until ESD is connected completely to the proper place or a circuit board
12. Service Manual This document is only for reference CONTENTS Specifications Block Diagrams MB Components Distribution SCH Diagrams Chart of Troubleshooting Safty Precautions Specification Si OU LCD 3 0 3 2 Mega Pixel Peripheral Configuration Memory card Micro SD Leakage current Call current as maximum power Basic Performance 32 5dBm Indicators Board level power 29 Board level receiver 109dBm sensitivity 108dBm Sm TRP DCS EST DCS a lt 280mA Block Diagrams CTRL SIGNAL RF PMSR RF TRANCEIVER SR1019 pol He UD WIFI BT RTL8723 TQ peee CTRL SIGNAL Serial spi 26M CLK CTRL SIGNAL 50101 FM ANT x HEADSET HR L HEAD MIC LCD_CTRL LCD D 0 15 CTRL NAND D 0 15 DDR A 0 13 DDR D 0 32 DDR CTRL 50100 506820 amp AP 6 PMU TIC CCIR data TIC SIMI SIM2 KEY CHG CTRL VBAT USBDW P USB JACK 44 16 w BKHz MB Components Distribution Camera SIMI KEYPAD Li ion BAT LCD NAND DDR i SD_CARD F B CTP SIM2 CHG CIRCUIT 0 RCV602 GHD VBAT KEYON RX IX 7616 MB V0 6 BB_DIGITAL gt wemas ema 141 TRACEDAT JTAG spore scum eon suum ker IIS ag BEI
13. T Check the voltage of is close to 0 7V V Re welding or change U100 4 During a call can not hear each other s voices No sound in REC 17 15 Re welding or change 0100 No sound in MIC 17 Re welding or change 0100 5 Can not power on Cannot power on Check the connection of receiver damage not yv Check All the individual components of Rec path P Check the connection of microphone damage or Check All the individual components of MIC circuit prpk Change Receiver Re welding it N Change Mic N Re welding it Check if it can be power on after redownloading Check the power supply and the output of 0100 Change U100 or Re welding it lo Test C446 to check the 26M clk is ok or not Change 26M crystal X0401 or re welding U400 Test the output of 32 768 crystal Change 32 768K crystal X200 1 Check the wilding between 0100 andU500 Re welding or change it then redownloading 6 RF abnormal RF abnormal Check whether the antenna have good contact A Pn Re assembly of the antenna
14. in order to operate When MIC is in good condition but loop MIC has no echo then you need to check the basic bias voltage signal of the MICBIASP and MICBIASSP the language signals of the RECEIVER and MIC also need to be checked Receiver Circuit Page 6 of 13 Speaker Circuit Close to BB 3810 31100501507 51120521501 P8603 D cnm The audio PA in SC6820 driveSpeaker directly through Filter and ESD protected network Headset Loop Headset loop includes two signals Headset speaker and MIC If the headset fitting were in good condition when the headset plug in it appears abnormal such as The Headset speaker has no sound the MIC is invalid All this need to check the access conditions of the circuit blow Page 7 of 13 HEAD EAR HEAD MIC VR803 511 gt gt 8802 8803 1000 EL 6 Di BEADMIC IN gt VR801 VR802 2 2 1 1 LCD Display module circuit Display module use the 3 5 HVGA LCD Page 8 of 13 ul ni n ul ul ni 123 LD po LD poi po Lm po LD pot LCD pos LD por LOL BJ Lo n n Lm pu impii LD pio Lm pis 1C pos wl hl Je uris C m o p C ar 3 lt C umo 0 n imo tm C umpu 1 C 1 C n Cum
15. ken twisted wire when you measure level A thicken twisted wire has low resistance therefore error of measurement is few Repair after separate Test Pack and Set because for short danger for example an overcurrent and furious flames of parts etc when you repair board in condition of connecting Test Pack and tuning on Take specially care of soldering because Land of PCB is small and weak in heat Surely tune on off while using AC power plug because a repair of battery charger is dangerous when tuning ON OFF PBA and Connector after disassembing charger Don t use as you pleases after change other material than replacement registered on SEC System Otherwise engineer in charge isn t charged with problem that you don t keep this rules ESD Electrostatically Sensitive Devices Precaution Several semiconductor may be damaged easilly by static electricity Such parts are called by ESD ElectrostaticallySensitive Devices for example IC BGA chip etc Read Precautionbelow You can prevent from ESD damage by staticelectricity Remove static electricity remained your body before you touch semiconductor or parts with semiconductor There are ways that you touch an earthed place or wear static electricity prevention string on wrist Use earthed soldering steel when you connect or disconnect ESD Use soldering removing tool to break static electricity Otherwise ESD will be damaged by static electricity Don t unpack until you set up E
16. rt 1 Block diagram of the Baseband part Page 2 of 13 LCD CTRL LCD NAND MND 00 15 DDR A16 15 DDR 010 32 DDR CTRL F smma SD CARD 9008 I Camera ei BB amp AP amp PMU CTP SIMI SIM2 i du KEYPAD CHG CTRL CHG CIRCUIT USB JACK aH 2 Power Management Mobile power supply system Page 3 of 13 LDO Output Voltage V Output Current Used Voltage 9 1 5 1 8 2 200mA 1 8V VSIMO VSIMI VDDSIM2 VDDSIM3 VDDMEI VDDCAMD1 VDDCAMA 0 LD Page 4 of 13 1 t gt pe Tl amapas 2 In 2 21 41 12 el oe m 8 WIFI BT PART Page 5 of 13 WIFI amp BT E 0207158 SWN SWP ANT i F 0 1 WIFI gt Lf HY T 1 0 0 Y T change to hws408 t 4 Place these parts in parhllel Audio Section MIC Circuit 5601 177553 a C601 8 4 1 I 1 1 4 E XD i 510 L L 8 1 1 1 1 C603 100pF MIC must have a bias voltage
17. t 11 d pr HEIL 56810 Platform Reference SCH_V1 0 0 Berkley Yu 2011 06 09 Hardware DEPT Robin Zhang 2011 06 08 Spreadtrum communications Inc Robert Liang 2011 06 09 r 4 2 1 T_Flash Socket Ld 2 tale uam ils zs me ee oe uf usb R905 OR usb oo cum UlTXD USB SCAN emma NBOOT USB NBOOT D VUSB VUSB 5 3 tial VBAT VUSB SIM1 SIM2 gt 1 2 DET R813 1 2 mae DET R814 mu TW 606810 Platform Reference SCH 0 0 LIUM MI Spreadtrum communications Inc
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