LG LG-S310 Service Manual Download Page 128

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LGE Internal Use Only

4. TROUBLE SHOOTING

snTzZXWGGG

4.15.7 Check RF Signal Path – Rx Path

Check Rx signal Path

-FEM
-Rx matching component

Checking Points

TP2GSM850)

TP3(EGSM)

TP4(DCS)

TP5(PCS)

TP2 ~ TP5

TP1

SW101

L102
100n

SW101

ANT

FL101

836.5 ,1880MHz

20
19

5
4

2
1

GSM850RX1

GSM850RX2

GND4

GSM900RX1

VC2

GSM900RX2

GSM1800RX1

GND1

GSM1800RX2

GND2

GSM1900RX1

VC1

GSM1900RX2

GSM850_900TX

GND5

GSM1800_1900TX

GND3

NC1

NC2

100p

C114

C117

100p

C124

C125

100p

C129 100p

ANT_FEED

GND

RF_ANT_SW2

RF_ANT_SW1

10p

C137

C135

22p

C134

22p

C133
3.9p

10p

C130

18n

L106

C131

10p

L104

6.8n

18n

L103

10p

C136

L105

4.7n

3.9p

C132

DCS

PCS

EGSM

GSM850

TP1

TP5(PCS)

TP4(DCS)

TP(EGSM)

TP2(GSM580)

Summary of Contents for LG-S310

Page 1: ...Service Manual Model LG S310 Internal Use Only Service Manual LG S310 Date December 2010 Issue 1 1 ...

Page 2: ...13 Keypad Backlight Illumination 46 3 14 u USB Multimedia interface connector 47 3 15 Camera 48 3 16 Audio 49 3 17 Bluetooth FM WYSBNBGX6 55 4 TROUBLE SHOOTING 59 4 1Trouble shooting test setup 59 4 2 Power on trouble 60 4 3 ChargingTrouble 63 4 4 USBTrouble 65 4 5 SIM DetectTrouble 68 4 6 Key SenseTrouble 70 4 7 Keypad BacklightTrouble 73 4 8 Micro SDTrouble 75 4 9 AudioTrouble 78 4 10 CameraTrou...

Page 4: ...unication service of facilities accessed through or connected to it LGE will not be responsible for any charges that result from such unauthorized use B Incidence of Harm If a telephone company determines that the equipment provided to customer is faulty and possibly causing harm or interruption in service to the telephone network it should disconnect telephone service until repair can be done A t...

Page 5: ...Attenuation LG S310 may interfere with sensitive laboratory equipment medical equipment etc Interference from unsuppressed engines or electric motors may cause problems H Electrostatic Sensitive Devices ATTENTION Boards which contain Electrostatic Sensitive Device ESD are indicated by the sign Following information is ESD handling Service personnel should ground themselves by using a wrist strap w...

Page 6: ... Processing EEPROM Electrical Erasable Programmable Read Only Memory EGPRS Enhanced General Packet Radio Service EDGE Enhanced Data rates for GSM Evolution EL Electroluminescence ESD Electrostatic Discharge FPCB Flexible Printed Circuit Board GMSK Gaussian Minimum Shift Keying GPIB General Purpose Interface Bus GPRS General Packet Radio Service GSM Global System for Mobile Communications IPUI Inte...

Page 7: ...ean Square RTC Real Time Clock SAW Surface Acoustic Wave SIM Subscriber Identity Module SLR Sending Loudness Rating SRAM Static Random Access Memory STMR Side Tone Masking Rating TA Travel Adapter TDD Time Division Duplex TDMA Time Division Multiple Access UART Universal Asynchronous Receiver Transmitter VCO Voltage Controlled Oscillator VCTCXO Voltage Control Temperature Compensated Crystal Oscil...

Page 8: ...208MHz MT6235 Chip Set RF Full EDGE AD6546 MCP Flash RAM 1G NAND 512 SDRAM Memory Card Slot microSD up to 4GB TYPE TFT Display Size 2 2 inch 176 x 220 QCIF Resolution 3M FF CMOS CAMERA Flash NA Bluetooth V2 1 with A2DP DATA USB microUSB v2 0 Receiver Sound Speaker 16 Φ SPK Phone Support LGIP 550N Li ion 900mAh Standby Time Over 290 hour Period 5 BATTERY Talk Time Over 3hours GSM Tx Level 5 FM Wire...

Page 9: ...B Transmitter Output Power EDGE 5dBm 26dBm 3dB 5dBm 26dBm 3dB 4dBm 26dBm 3dB 4dBm 26dBm 3dB Burst Timing 3 69us Spectrum due to modulation out to less than 1800kHz offset 200kHz 36dBm 600kHz 51dBm 56dBm Spectrum due to modulation out to larger than 1800kHz offset to the edge of the transmit band GSM 1800 3000kHz 63dBc 46dBm 3000kHz 6000kHz 65dBc 46dBm 6000kHz 71dBc 46dBm DCS 1800 3000kHz 65dBc 51d...

Page 10: ... 1800 and GSM 1900 based GSM GPRS EDGE RF Transceiver AD6546 is a fully integrated Quad band GSM Transceiver with an advanced modulator design that fully supports 8 PSK EDGE modulation format The AD6546 contains a translation loop modulator for directly modulating baseband signals onto an integrated Tx VCO Figure 3 1 1 Block Diagram of RF part 51 V vwhp KZ Eorfn Gldjudp UI Eorfn Figure 3 1 1 Block...

Page 11: ...architecture including PA linearization To reduce BOM the TX PLL loop filter components are fully integrated The AD6546 uses the industry proven direct conversion receiver architecture of the OthelloTM family For Quad band applications the front End features four fully integrated differential LNAs with programmable gain The RF is downconverted by quadrature mixers and then fed to the baseband prog...

Page 12: ...s an internal resistance so a final low pass pole can be created with external shut capacitors if necessary The on chip filter has an auto calibration feature ensuring that the filters are tuned for optimum performance in both EDGE and GSM modes Figure 3 2 1 2 Receiver Baseband Section Figure 4 2 1 1 GSM Receiver Path Low Noise Amplifiers The LNAs have differential inputs which help minimize the e...

Page 13: ...orrection circuit is integrated The one off calibration is triggered over the serial bus upon initialization and then a fully automatic offset tracking loop is enabled to minimize residual offsets during operation DCS1800 PCS1900 and a 1 3 multiplication for low band GSM900 GSM850 Baseband Amplifiers Low Pass Filters The baseband amplifiers provide the majority of the analog receiver gain The filt...

Page 14: ...ency After bandpass filtering the TX IF signal is used as the reference input to the Phase Frequency Detector PFD for the transmit PLL and in EDGE mode also provides the input to the Reference Path Log Detector circuit for AM restoration The modulator also contains a fully automatic DC offset calibration routine ensuring Origin offset requirements are comfortably met snTzZXWG G G Phase Frequency D...

Page 15: ...he mixers unwanted side band and higher order mixing products prior to the PFD input A Fully integrated TX Sequencer manages phase locking prior to PA ramping AM Loop The Polar modulator architecture also contains an amplitude loop for control of the PA output power This allows the AM content of the 8PSK modulation to be efficiently and accurately transmitted by a Polar PA significantly exceeding ...

Page 16: ...S integrated circuit provides the internal PAC function and interface circuitry Fabricated in InGaP GaAs the Heterojunction Bipolar Transistor HBT PA blocks support the GSM850 900 bands and DCS1800 PCS1900 bands Both PA blocks share common power supply pads to distribute current The InGaP GaAs die Silicon Si controller die and passive components are mounted on a multi layer laminate substrate and ...

Page 17: ...ced outputs of all RX ports FEM FL101 has two logic inputs which are VC1 VC2 for selecting RX TX mode and low high band operation Table 3 2 4 1 FEM control logic Figure 3 2 4 1 FEM schematic L102 100n SW101 G2 ANT RF G1 FL101 836 5 1880MHz 20 19 13 11 18 15 8 14 7 12 6 9 5 4 10 3 16 2 1 7 1 T N A GSM850RX1 GSM850RX2 GND4 GSM900RX1 VC2 GSM900RX2 GSM1800RX1 GND1 GSM1800RX2 GND2 GSM1900RX1 VC1 GSM190...

Page 18: ... Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 TECHNICAL BRIEF 41 V vwhp KZ Eorfn Gldjudp Urvhpdu Wrwdo Eorfn Gldjudp uUSB Connector 5Pin MUIC TS5USBA33402YZPR Switch 3 3 Functional Block Diagram ...

Page 19: ...gement and interrupt handling logics z Digital Signal Processor DSP Subsystem includes a DSP and its accompanying memory memory controller and interrupt controller z MCU DSP Interface the junction at which the MCU and the DSP exchange hardware and software information z Microcontroller Peripherals includes all user interface modules and RF control interface modules z Microcontroller Coprocessors r...

Page 21: ...3 IO RF hard wire control bus 6 AB8 BPI_BUS7 VDD33 IO RF hard wire control bus 7 AE9 BPI_BUS8 VDD33 IO RF hard wire control bus 8 AD9 BPI_BUS9 VDD33 IO RF hard wire control bus 9 RF Serial Control Unit AC9 BSI_CS0 VDD33 IO RF 3 wire interface chip select 0 AE10 BSI_DATA VDD33 IO RF 3 wire interface data output AD10 BSI_CLK VDD33 IO RF 3 wire interface clock output 3 4 4 ADC Channel Ball Name Dir D...

Page 22: ...1 VSSCA_USB IO AD22 VSSCD_USB IO AC21 VRT IO AD23 VSS33_USB IO AE22 USB_DP IO USB D Input Output AE23 USB_DM IO USB D Input Output UART IrDA Interface C25 URXD1 VDD33 IO UART 1 receive data C24 UTXD1 VDD33 IO UART 1 transmit data C23 UCTS1 VDD33 IO UART 1 clear to send B25 URTS1 VDD33 IO UART 1 request to send A24 URXD2 VDD33 IO UART 2 receive data B24 UTXD2 VDD33 IO UART 2 transmit data A23 URXD3...

Page 23: ...F hard wire control bus 9 GPIO23 BPI_BU S9 BSI_CS 1 PU P D PD AC10 PWM0 VDD33 IO Pulse width modulated signal 0 GPIO39 PWM0 PU P D PD AB10 PWM1 VDD33 IO Pulse width modulated signal 1 GPIO40 PWM1 BSI_RFI N PU P D PD AC5 PWM2 VDD33_CAM IO Pulse width modulated signal 2 GPIO17 PWM2 D2_TID 5 PU P D PD AE5 PWM3 VDD33_CAM IO Pulse width modulated signal 3 GPIO18 PWM3 D2_TID 6 PU P D PD AE4 SCL VDD33_CA...

Page 24: ... AC14 NLD16 VDD33_LCD IO Parallel LCD NAND Flash Data 16 GPIO32 NLD16 PU P D PD AC18 NRNB VDD33_LCD IO NAND Flash Read Busy Flag GPIO33 NRNB PU P D PU AB18 NCLE VDD33_LCD IO NAND Flash Command Latch Signal GPIO34 NCLE PU P D AE19 NALE VDD33_LCD IO NAND Flash Address Latch Signal GPIO35 NALE PU P D AD19 NWEB VDD33_LCD IO NAND Flash Write Strobe GPIO36 NWEB PU P D AC19 NREB VDD33_LCD IO NAND Flash R...

Page 25: ...ernal interrupt 6 GPIO47 EINT6 EDIWS PU P D PU D24 EINT7 VDD33 IO External interrupt 7 GPIO48 EINT7 EDIDAT PU P D PU K17 MFIQ VDD33_EMI IO Interrupt to MCU GPIO66 nFIQ CLKM7 PU P D PU T17 EADMUX VDD33_EMI IO GPIO65 EADM UX CLKM6 PU P D AD25 EA26 VDD33_EMI IO External memory address bus 26 GPIO64 EA26 CLKM5 PU P D B16 MCCM0 VDD33_MC IO SD Command MS Bus State Output GPIO67 MC0C M0 TDMA_ CK PU P D P...

Page 26: ...PIO51 URXD2 UCTS3 PU P D PU B24 UTXD2 VDD33 IO UART 2 transmit data GPIO52 UTXD2 URTS3 PU P D PU A23 URXD3 VDD33 IO UART 3 receive data GPIO53 URXD3 IRDA_R XD PU P D PU B23 UTXD3 VDD33 IO UART 3 transmit data GPIO54 UTXD3 IRDA_T XD PU P D PU D18 DAICLK VDD33 IO DAI clock output GPIO59 DAICLK PU P D PD A17 DAIPCM OUT VDD33 IO DAI pcm data out GPIO60 DAIPC MOUT PU P D PD B17 DAIPCMI N VDD33 IO DAI p...

Page 27: ...BRXFS PU P D PD AC2 CMDAT7 VDD33_CAM IO CMOS sensor data input 7 GPIO6 CMDAT 7 D1ICK PU P D PD AC3 CMDAT6 VDD33_CAM IO CMOS sensor data input 6 GPIO7 CMDAT 6 D1ID PU P D PD AC1 CMDAT5 VDD33_CAM IO CMOS sensor data input 5 GPIO8 CMDAT 5 D1IMS PU P D PD AD1 CMDAT4 VDD33_CAM IO CMOS sensor data input 4 GPIO9 CMDAT 4 D2ICK PU P D PD AE2 CMDAT3 VDD33_CAM IO CMOS sensor data input 3 GPIO10 CMDAT 3 D2ID ...

Page 28: ...uch as BBTX BBRX and ABI etc Power Available Vout V Max Current mA Output Capacitor F Description Connected Device Vcore 1 2 0 9 DC DC 350 4 7u Digital core VIO 2 8 100 1u Digital IO VRF 2 8 250 4 7u RF chip VA 2 8 125 4 7u Analog baseband VRTC 1 2 0 6 100n RTC VM 1 8 2 8 300 4 7u External Memory Selectable VSIM 1 8 3 0 80 1u SIM Card Selectable VSIM2 1 8 3 0 20 SIM Card2 Selectable VTCXO 2 8 40 1...

Page 29: ...D8 C10 D10 A9 F1 B11 C11 A11 D11 C12 F2 E3 C1 C2 B1 W2 V4 V3 W3 V1 U3 XP XM YP YM AFC AFC_BYP BATDET VRF_SENSE VRF VTCXO VREF VIBRATOR LED VCORE VCORE_FB BAT_BACKUP VA VM VM_SENSE VCAM_D VCAM_A_SENSE VCAM_A VBT VIO VUSB VSIM SIO PWRKEY ISENSE VMSEL GATEDRV CHRIN SCLK BATSENSE SRST SCLK2 SRTS2 SIO2 VSIM2 RESET 1 K D D V 2 K D D V 3 K D D V 4 K D D V 5 K D D V 6 K D D V 1 I M E _ 3 3 D D V 2 I M E _...

Page 30: ... U B _ B S U V 0 2 8 3 1 4 R 0 1 4 R K 0 0 1 VBAT 5 1 4 C u 1 u 1 4 1 4 C 6 1 4 C u 1 BQ25040 U402 EUSY0388501 6 5 7 4 8 3 9 2 10 1 11 PGND IN BAT ISET _PG VSS1 CHG LDO VSS2 IFULL EN_SET K 3 4 1 4 R N I _ G H C _ B S U V VIO_2V8 K 0 0 1 9 0 4 R CHG_EN_N CHG_EOC_N CHG_STS_N IEOC End of Charging current set IEOC R 200 ISET 530 R K ISET Charging current set C405 100u VA400 C404 1u C400 0 1u R401 1K 3...

Page 31: ...rent 610 mA 5 CV voltage 4 1 V 6 Cutoff current below 60 mA 7 Full charge indication current icon stop current 60 mA 8 Recharge voltage 4 15 V 9 Low battery alarm a Idle below 3 55 V b call below 3 55 V 10 Low battery alarm interval a Idle 3 min b Dedicated 1 min 11 Switch off voltage 3 3 V 12 Charging temperature adc range a 20 low charging voltage operation 3 6 V 3 8 V b 20 60 standard charging ...

Page 32: ...ice purposes LGE Internal Use Only 3 TECHNICAL BRIEF snTzZXWG G G 3 6 Power ON OFF 3 6 1 Power key detect 3 6 2 Charger detect Power is ON when Charger with specific resistor value 130KΩ or 56KΩ KB116 END_KEY TP206 1K R205 TP201 C4 B4 A4 D5 C6 PWRKEY ISENSE VMSEL GATEDRV CHRIN END_KEY ...

Page 33: ...TzZXWG G G 3 7 SIM Interface SIM SD Combo Socket ENSY0018601 VSIM_PWR TP203 C239 1u A2 J13 J12 J11 J10 C3 SRST SCLK2 SRTS2 SIO2 VSIM2 RESET RST_N SIM_DATA SIM_CLK SIM_RST_N 0 2 6 1 5 1 4 1 3 1 2 1 1 1 1 2 10 9 T8 S8 3 G 7 S 3 S 6 S 2 S 5 S 1 S 2 G VA307 ICVL0518050FR C301 22p 4 7K R306 VSIM_PWR 22p C302 C304 1u SIM_DATA SIM_CLK SIM_RST_N ...

Page 34: ...A V R F 0 5 0 8 1 5 0 L V C I 5 0 3 A V 4 0 3 A V R F 0 5 0 8 1 5 0 L V C I VA307 ICVL0518050FR 3 0 3 A V R F 0 5 0 8 1 5 0 L V C I 2 0 3 A V R F 0 5 0 8 1 5 0 L V C I 1 0 3 A V R F 0 5 0 8 1 5 0 L V C I C300 1u C301 22p K 6 5 1 0 3 R K 6 5 2 0 3 R 3 0 3 R K 6 5 K 6 5 4 0 3 R K 6 5 5 0 3 R 4 7K R306 VSIM_PWR 22p C302 VA300 VIO_2V8 C304 1u VBL_LDO_2V8 MSD_DET_N MSD_D 0 MSD_CLK MSD_D 2 MSD_D 3 MSD_D...

Page 35: ...IEF snTzZXWG G G Figure 3 8 1 Micro SD Memory Card Detection Scheme Table 3 8 1 Micro SD memory pad assign SD mode in No Name Type Description T1 DAT2 I O Data bit 2 T2 CD DAT3 I O Data bit 3 T3 CMD I O Command response T4 VDD Power Power supply T5 CLK I Clock T6 VSS Ground Power ground T7 DAT0 I O Data bit 0 T8 DAT1 I O Data bit 1 ...

Page 36: ... 7 U N D 8 U N D 9 U N D 0 1 U N D 1 1 U N D DQ0 IO0 DQ1 IO1 DQ2 IO2 DQ3 IO3 DQ4 IO4 DQ5 IO5 DQ6 IO6 DQ7 IO7 DQ8 IO8 DQ9 IO9 DQ10 IO10 DQ11 IO11 DQ12 IO12 DQ13 IO13 DQ14 IO14 DQ15 IO15 _CS CLK VDD1 CKE VDD2 _WED VDD3 BA0 VDD4 BA1 _RAS _CAS VDDQ1 LDQM VDDQ2 UDQM VDDQ3 A0 A1 VSS1 A2 VSS2 A3 VSS3 A4 VSS4 A5 A6 A7 VSSQ1 A8 VSSQ2 A9 VSSQ3 A10 A11 A12 VCC1 VCC2 _CE ALE VCCQ CLE _RE R__B VSS5 _WE VSS6 _W...

Page 37: ... solution for large nonvolatile storage applications such as solid state file storage and other portable applications requiring non volatility In 512Mb Mobile SDR SDRAM is 536 870 912 bits synchronous high data rate Dynamic RAM organized as 4 x 8 388 608 words by 16 bits fabricated with SAMSUNG s high performance CMOS technology Synchronous design allows precise cycle control with the use of syste...

Page 38: ... for Copyright Protection Mobile SDR SDRAM VDD VDDQ 1 8V 1 8V LVCMOS compatible with multiplexed address Four banks operation MRS cycle with address key programs CAS latency 3 Burst length 1 2 4 8 Full page Burst type Sequential Interleave EMRS cycle with address key programs All inputs are sampled at the positive going edge of the system clock Burst read single bit write operation Special Functio...

Page 39: ...E Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF snTzZXWG G G 3 10 LCD Display Figure 3 8 1 LCD Module Operation Block Diagram ...

Page 41: ...ghtness control Users can easily configure up to 32 step of LED current by I2C interface In the section of linear regulator The RT9367C comprises a dual channel low noise and low dropout regulator sourcing up to 300mA at each channel The range of output voltage can be configured from 1 1V to 3 3V by I2C interface The outputs of LDO offer 3 accuracy and low dropout voltage of 250mV 300mA The LDO al...

Page 42: ...its long followed by an eighth bit which is a data direction bit R W The RT9367C address is 1010100 54h and is a receive only slave device The second word selects the register to which the data will be written The third word contains data to write to the selected register Figure 3 11 2 RT9367C I2C Writing Cycles for LDO and LED Driver Figure 3 11 2 shows the writing information of dual LDO and LED...

Page 44: ...A 7 L O C K 6 L O C K 5 L O C K 4 L O C K 3 L O C K 2 L O C K 1 L O C K 0 L O C K 7 W O R K 6 W O R K 5 W O R K 4 W O R K 3 W O R K 2 W O R K 1 W O R K 0 W O R K N _ C O E _ G H C L R T C _ Y R O T C A F 1 N I _ Y E K 4 T U O _ Y E K 0 N I _ Y E K 2 N I _ Y E K 3 N I _ Y E K 4 N I _ Y E K 0 T U O _ Y E K 1 T U O _ Y E K 2 T U O _ Y E K 3 T U O _ Y E K 5 N I _ Y E K N E _ A N L _ M F KEY VDD33 47n ...

Page 45: ...es 3 TECHNICAL BRIEF snTzZXWG G G 3 13 Keypad Backlight Illumination Figure 3 13 1 Circuit Diagram D11 C12 VIBRATOR LED MAIN_KEY_BACKLIGHT VIBRATOR 150mA 250mA R107 100 VA100 C101 1u LD100 100 R106 R105 100 R103 100 100 R102 R101 100 100 R100 100 R104 LD101 LD102 LD103 LD104 LD105 VBAT LD107 LD106 MAIN_KEY_BACKLIGHT ...

Page 46: ...T Remote control Key ADC Headset left sound 3 MUIC_DP USB UART Remote control interrupt Headset Right sound 4 MUIC_ID 5 GND 6 FM_ANT FM radio antenna 7 FM_ANT FM radio antenna 8 FM_ANT FM radio antenna 9 FM_ANT FM radio antenna 10 FM_ANT FM radio antenna 11 FM_ANT FM radio antenna ZD701 C410 0 1u FL400 IN OUT GND1 GND2 C417 22p C411 22p CN401 11 10 9 5 4 3 2 1 8 7 6 VUSB_CHG_IN L400 270n ZD401 C41...

Page 47: ... C613 3 0 6 A V 4 0 6 A V VCAM_2V8 CN601 13 12 14 11 15 10 16 9 17 8 18 7 19 6 20 5 21 4 22 3 23 2 24 1 VCAM_1V8 C610 7 5p R609 100 0 1u C612 C609 7 5p C611 0 1u R608 100 0 0 6 B F 0 2 2 CAM_MCLK CAM_PCLK CAM_I2C_SCL CAM_I2C_SDA CAM_PWDN CAM_RST_N CAM_F_DATA 7 CAM_F_DATA 0 CAM_F_DATA 1 CAM_F_DATA 2 CAM_F_DATA 3 CAM_F_DATA 4 CAM_F_DATA 5 CAM_F_DATA 6 CAM_F_VSYNC CAM_F_HSYNC Close to BB Chip move to...

Page 48: ...2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 TECHNICAL BRIEF snTzZXWG G G 3 16 Audio LG S310 Audio Part Block diagram is below Figure 3 16 2 Block Diagram ...

Page 49: ...xtend playback time by optimizing the headphone driver supply voltages according to the volume control The flexible input configuration allows single ended or differential stereo inputs Mixers allow highly flexible routing to the outputs A Voice Bypass path is also available for low power voice applications The WM9093 is controlled using a two wire I2C interface An integrated oscillator generates ...

Page 50: ... 5 C u 2 2 1000 FB505 HS_R HS_L FM_AUDIO_L FM_AUDIO_R AUD_I2C_SCL AUD_I2C_SDA HS_OUT_L HS_OUT_R SPK_N SPK_P RCV_SPK_OUT_P RCV_SPK_OUT_N R206 0 p 9 3 7 4 2 C p 9 3 6 4 2 C VMIC_BIAS_P p 9 3 4 4 2 C p 9 3 4 5 2 C C250 0 1u 3 5 2 C p 9 3 C249 1u 1u C248 5 5 2 C p 9 3 0 1u C251 p 9 3 2 5 2 C T3 R2 R1 P2 P1 N4 N3 N2 N1 M1 M2 L1 L2 K1 K2 K3 K4 J2 J1 AU_MOUTL AU_MOUTR AU_FMINL AU_FMINR AU_OUT0_N AU_OUT0_...

Page 51: ...0 0 0 Y V E S 3 0 1 A V 1 0 1 4 0 0 0 Y V E S L100 47n 2 0 1 A V 1 0 1 4 0 0 0 Y V E S UNIT 42dB 4 72 3 76 1 25 SPM0410LR5H QB MIC100 SUMY0010610 6 5 4 3 2 1 OUT G1 G2 G3 PWR G4 VMIC_BIAS_P MIC_P MIC_N 0 0 8 R 0 13 14 15 16 17 18 19 20 21 22 23 24 G2 G4 0 0 8 C p 9 3 1 0 8 C p 9 3 u 0 1 2 0 8 C VMIC_BIAS_P MIC_N MIC_P VMIC_BIAS_N KEY_OUT 4 KEY_OUT 0 KEY_OUT 1 KEY_OUT 2 KEY_OUT 3 ...

Page 52: ...A V 2 0 5 A V SPK500 p 9 3 5 0 5 C p 9 3 4 0 5 C RCV_SPK_OUT_P RCV_SPK_OUT_N SPK RCV Dualmode Circuit FB500 1800 1800 FB501 0 0 5 A V 1 0 5 A V p 9 3 3 0 5 C p 9 3 2 0 5 C CN500 2 1 RCV_N RCV_P Receiver Circuit DG2735DN T1 E3 EUSY0347001 U500 6 5 7 4 8 3 9 2 10 1 V NO2 NO1 COM2 COM1 IN2 IN1 NC2 NC1 GND 0 1u C522 AVDD_2V8 AUD_RCV_SPK_SEL RCV_SPK_P RCV_SPK_N RCV_N RCV_P SPK_N SPK_P ...

Page 53: ...120p C524 2 2u C519 R504 2 2K C518 0 1u 0 1u C521 HP_MIC_N HP_MIC_P HS_MIC_P 2 2uF 6 3V 10 1005 ECCH0000198 C409 10n U400 EUSY0372001 TS5USBA33402YZPR 4 B D2 B2 A1 A2 B3 C2 A4 C1 A3 D1 E4 D3 D4 E3 E2 C3 E1 C4 1 B Y L P P U S V UART_TX VBUS UART_RX DM DP USB_DM ID USB_DP AUDIO_L R2_2K AUDIO_R MIC DSS _INT SDA CLDO SCL GND T E S I TP400 R400 47K VIO_2V8 R406 2 2K 22p C407 R402 2 2K VIO_2V8 C402 1u S...

Page 54: ...y qualified to the Bluetooth v2 1 EDR specification for data and voice communications 3 17 2 Features BC7820 can be used as part of a fully compliant Bluetooth v3 0 HS system Fully qualified Bluetooth v2 1 EDR system Integrated FM radio receiver and transmitter with full RDS RBDS encoding and decoding including support for TMC encoding and decoding Stereo audio input and output stages Full speed B...

Page 55: ...B1 2 A 2 C 6 F 4 C 2 D 1 A X U A _ O L _ T B _ S S V O I D A R _ T B _ S S V A N A _ G E R _ S S V S D A P _ G I D _ S S V 1 C N S S V T U O _ L A T X BT_RF VSS_BT_RF_BAL FM_RX VSS_FM_AUDIO FM_TX_P FM_TX_N UART_RX UART_TX UART_RTS UART_CTS PCM2_IN PCM2_OUT PCM2_SYNC PCM2_CLK AUDIO_OUT_L AUDIO_OUT_R AUDIO_IN_L AUDIO_IN_R SLEEP_CLK VREG_ENABLE_RST XTAL_IN SYS_CLK PIO_0 PIO_2 PIO_3 H _ N I _ G E R V ...

Page 56: ...er features a near zero IF architecture that allows the channel filters to be integrated onto the die Sufficient out of band blocking specification at the LNA input allows the receiver to be used in close proximity to GSM and WCDMA cellular phone transmitters without being desensitized For both basic rate and EDR an ADC is used to digitize the IF received signal Low Noise Amplifier The LNA operate...

Page 57: ...Figure High Gain NF 1 1dB Figure 3 17 5 FM LNA Circuit diagram FM LNA Circuit is designed to improve the FM sensitivity in the FM antenna built in phone It has collector feedback bias to minimize the temperature effect FM_LNA_EN turn on it while FM function is working without plugging Ear jack Q700 2 1 3 C725 330p 1u C701 24K R701 22n L703 R702 270 R703 4 7K C704 470n 470n C702 R700 5 1 DNI C703 F...

Page 58: ...LE SHOOTING 4 TROUBLE SHOOTING 4 Trouble Shooting 4 1 Trouble shooting test setup Equipment setup Power on all of test equipment Connect PIF UNION JIG or dummy battery to the DUT for power up Connect mobile switch cable between Communication test set and DUT when you need to make a phone call Follow trouble shooting procedure ...

Page 59: ...ssert to MT6235 Check the LDOs power and X tal Main board main Key FPCB Connector TP1 END_KEY Signal TP2 VCORE_1V2 TP3 VIO_2V8 TP4 VMEM_1V8 TP5 AVDD_2V8 TP6 X tal TP7 Figure 4 2 1 Power on trouble FC 135 32 768KHz X200 2 1 TP205 C259 15p B13 A15 A14 XIN XOUT BBWAKEUP C258 18p TP206 1K R205 TP201 C4 B4 A4 D5 C6 PWRKEY ISENSE VMSEL GATEDRV CHRIN END_KEY D200 u 1 0 3 2 C 2 3 2 C u 1 7 3 2 C u 7 4 1 3...

Page 60: ... 61 Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING snTzZXWG G G Checking Points and Flow TP3 TP7 TP4 TP6 TP5 TP1 ...

Page 61: ...y Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING snTzZXWG G G Figure 4 2 2 END KEY TP2 High before booting Low booting Figure 4 2 3 X tal TP7 Wave Form 32 768kHz ...

Page 62: ...ubleshooting Procedure Connection of TA or USB Cable Check the charger TA or USB Cable connector Charging current path Check the charging current Path Battery Check the battery Figure 4 3 1 Charging circuit C410 0 1u FL400 IN OUT GND1 GND2 C417 22p C411 22p CN401 11 10 9 5 4 3 2 1 8 7 6 VUSB_CHG_IN MUIC_IO_M MUIC_IO_P MUIC_ACC_ID m m 2 h t d i W e n i L Line Width 2mm TP1 S U B _ B S U V 0 2 8 3 1...

Page 63: ...E Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING snTzZXWG G G Checking Points and Flow TP1 FL400 CN401 U402 No 10 pin VBAT TP2 ...

Page 64: ...TP1 VBAT TP2 MUIC_IO_P TP3 MUIC_IO_M TP4 Figure 4 4 1 USB Circuit C410 0 1u FL400 IN OUT GND1 GND2 VUSB_CHG_IN m m 2 h t d i W e n i L TP1 S U B _ B S U V 0 2 8 3 1 4 R 5 1 4 C u 1 6 1 4 C u 1 BQ25040 U402 EUSY0388501 6 5 7 4 8 3 9 2 10 1 11 PGND IN BAT ISET _PG VSS1 CHG LDO VSS2 IFULL EN_SET K 3 4 1 4 R N I _ G H C _ B S U V C417 22p CN401 11 10 9 5 4 3 2 1 8 7 6 MUIC_IO_M MUIC_IO_P MUIC_ACC_ID T...

Page 66: ...ernal Use Only 4 TROUBLE SHOOTING snTzZXWG G G start Is TP1 VUSB_CHG_IN Voltage 5 1V Change CN401 or FL400 Yes TP2 LDO4 9V Output is about 5V Change the U402 Change the main board Cable is insert Physically No Change CN401 Yes No No Is CN401 Output Is TP3 MUIC_IO_M TP4 MUIC_IO_P signal OK End Yes No Yes ...

Page 67: ...G G 4 5 SIM Detect Trouble Check the SIM power and signal VSIM_PWR TP1 SIM_RST_N TP2 SIM_CLK TP3 SIM_DATA TP4 Figure 4 5 1 SIM Circuit Checking Point TP3 TP4 TP2 TP1 0 2 6 1 5 1 4 1 3 1 2 1 1 1 1 2 10 9 T8 S8 3 G 7 S 3 S 6 S 2 S 5 S 1 S 2 G VA307 ICVL0518050FR C301 22p 4 7K R306 VSIM_PWR 22p C302 C304 1u SIM_DATA SIM_CLK SIM_RST_N TP1 TP4 TP3 TP2 ...

Page 69: ... L105 47n L104 47n L103 KB118 KB117 KB114 KB113 KB112 KB107 KB108 KB109 KB120 KB110 KB115 KB102 KB111 KB103 KB119 KB100 KB101 KB104 KB105 KB106 KEY_IN 5 KEY_OUT 2 KEY_OUT 1 KEY_OUT 0 KEY_IN 4 KEY_IN 0 KEY_IN 1 KEY_OUT 4 KEY_IN 2 KEY_IN 3 KEY_OUT 3 NUM 1 NUM 2 NUM 3 MENU NUM 4 SEND NUM 5 NUM 6 NUM 7 NUM 8 NUM 9 STAR NUM 0 SHARP LEFT RIGHT SEARCH DOWN OK UP TP3 CN801 4 3 2 1 VA800 VA801 VA802 KEY_IN...

Page 70: ...ternal Use Only 4 TROUBLE SHOOTING snTzZXWG G G Checking Points and Flow All KEY_OUT are High All KEY_IN are Low YES Key press Change the Main Key FPCB or Main Board And retest NO start KEY_IN and KEY_OUT of pressed key are Pulse waveform NO Change the Main Key FPCB and retest Change the Main Board YES ...

Page 71: ...opyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING snTzZXWG G G Waveform Figure 4 6 2 Before Key press Figure 4 6 3 While Key press KEY_IN KEY_OUT waveform KEY_OUT KEY_IN ...

Page 72: ...t Trouble MAIN Key Pad LED is on as below Key pressing main key backlight goes down low below 0 8v MAIN Key Backlight LED On Check the TP1 voltage TP1 Above 0 8 V Figure 4 7 1 Keypad Backlight Trouble Circuit R107 100 VA100 C101 1u LD100 100 R106 R105 100 R103 100 100 R102 R101 100 100 R100 100 R104 LD101 LD102 LD103 LD104 LD105 VBAT LD107 LD106 MAIN_KEY_BACKLIGHT TP1 ...

Page 73: ... 74 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING snTzZXWG G G Checking Point Checking Flow TP1 ...

Page 74: ...3 2 1 17 18 ST2 ST1 S4 T1 T2 T3 T4 T5 T6 T7 T8 S8 3 G 7 S 3 S 6 S 2 S 5 S 1 S 1 G 2 G R F 0 5 0 8 1 5 0 L V C I 6 0 3 A V R F 0 5 0 8 1 5 0 L V C I 5 0 3 A V 4 0 3 A V R F 0 5 0 8 1 5 0 L V C I VA307 ICVL0518050FR 3 0 3 A V R F 0 5 0 8 1 5 0 L V C I 2 0 3 A V R F 0 5 0 8 1 5 0 L V C I 1 0 3 A V R F 0 5 0 8 1 5 0 L V C I C300 1u C301 22p K 6 5 1 0 3 R K 6 5 2 0 3 R 3 0 3 R K 6 5 K 6 5 4 0 3 R K 6 5...

Page 75: ...E Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING Checking Point Checking Flow TP5 TP9 TP1 TP3 TP8 TP2 TP7 TP6 TP4 snTzZXWG G G ...

Page 76: ... 77 Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING snTzZXWG G G Waveform Figure 4 8 2 MSD_CLK Signal Waveform ...

Page 77: ... 5 C p 9 3 2 0 5 C CN500 2 1 RCV_N RCV_P Receiver Circuit TP1 TP2 R206 0 p 9 3 7 4 2 C p 9 3 6 4 2 C VMIC_BIAS_P p 9 3 4 4 2 C p 9 3 4 5 2 C C250 0 1u 3 5 2 C p 9 3 C249 1u 1u C248 5 5 2 C p 9 3 0 1u C251 p 9 3 2 5 2 C T3 R2 R1 P2 P1 N4 N3 N2 N1 M1 M2 L1 L2 K1 K2 K3 K4 J2 J1 AU_MOUTL AU_MOUTR AU_FMINL AU_FMINR AU_OUT0_N AU_OUT0_P AU_MICBIAS_P AU_MICBIAS_N AU_VREF_N AU_VREF_P AU_VIN0_P AU_VINO_N AU...

Page 78: ... 79 Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING snTzZXWG G G Checking Flow Waveform Figure 5 9 1 5 sine waveform ...

Page 79: ...WG G G 4 9 2 Speaker Trouble Check speaker signal path RCV_SPK_OUT_P N TP1 TP2 SPK_P N TP3 TP4 Analog SW U500 RCP_SPK_P N TP5 TP6 Figure 4 9 2 1 Speaker pad contact check t G G G G G G G G U t G G G G G G G G U wX wY wX wY SPK501 3 0 5 A V 2 0 5 A V SPK500 p 9 3 5 0 5 C p 9 3 4 0 5 C RCV_SPK_OUT_P RCV_SPK_OUT_N SPK RCV Dualmode Circuit TP1 TP2 ...

Page 80: ...eaker check point wZ w w w w w wZ w pj WW WW Sine Waveform C508 1u FB502 220 C509 1u C506 1u C514 2 2u 2 1 5 C u 2 2 1u C507 WM9093ECS R EUSY0403901 IC500 3 B A4 C3 C2 2 B D1 D3 4 D C1 A1 D2 1 B D5 A2 A5 A3 B5 4 B C5 4 C D N G OUT D D V P H CPVDD CPVSS CN HPL OUT S A I B IN2 HPR IN1 D D V S IN3 IN2 A D S IN1 IN3 CP L C S 220 FB503 3 1 5 C u 2 2 HS_R HS_L FM_AUDIO_L FM_AUDIO_R SPK_N SPK_P TP5 TP6 T...

Page 82: ...IC signal path FPCB VMIC_BIAS_P TP1 FPCB MIC_P TP2 MIC100 Figure 4 9 3 1 FPCB MIC Check point Figure 4 9 3 2 FPCB MIC Check point wY wX wX wY 47n L101 8 0 1 R 1 0 1 4 0 0 0 Y V E S 3 0 1 A V 1 0 1 4 0 0 0 Y V E S L100 47n 2 0 1 A V 1 0 1 4 0 0 0 Y V E S UNIT 42dB 4 72 3 76 1 25 SPM0410LR5H QB MIC100 SUMY0010610 6 5 4 3 2 1 OUT G1 G2 G3 PWR G4 VMIC_BIAS_P MIC_P MIC_N TP2 TP1 ...

Page 83: ... training and service purposes 4 TROUBLE SHOOTING snTzZXWG G G Flow Chart start Does FPCB Connected properly to the main BD yes VMIC_BIAS_P at TP1 2 8V yes Can you see a mic signal at TP2 Change the FPCB End no Connect FPCB to the main BD correctly Change main BD no Replace MIC100 yes no ...

Page 84: ...it for sound Check wX wY wZ w C508 1u FB502 220 C509 1u C506 1u FB504 1000 C514 2 2u 2 1 5 C u 2 2 C516 2 2u C515 2 2u 1u C507 WM9093ECS R EUSY0403901 IC500 3 B A4 C3 C2 2 B D1 D3 4 D C1 A1 D2 1 B D5 A2 A5 A3 B5 4 B C5 4 C D N G OUT D D V P H CPVDD CPVSS CN HPL OUT S A I B IN2 HPR IN1 D D V S IN3 IN2 A D S IN1 IN3 CP L C S 220 FB503 1V8_AMP 1 0 5 R 0 2 2 0 5 R 0 2 0 1 5 C u 1 0 u 1 0 1 1 5 C 3 1 5...

Page 85: ...E Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING snTzZXWG G G Checking Points Waveform wZ w wX wY pj WW WW MUIC Sine Waveform ...

Page 87: ... CN HPL OUT S A I B IN2 HPR IN1 D D V S IN3 IN2 A D S IN1 IN3 CP L C S 220 FB503 1V8_AMP 1 0 5 R 0 2 2 0 5 R 0 2 0 1 5 C u 1 0 u 1 0 1 1 5 C 3 1 5 C u 2 2 1000 FB505 HS_R HS_L FM_AUDIO_L FM_AUDIO_R AUD_I2C_SCL AUD_I2C_SDA SPK_N SPK_P TP3 TP4 TP1 TP2 R206 0 p 9 3 7 4 2 C p 9 3 6 4 2 C VMIC_BIAS_P p 9 3 4 4 2 C p 9 3 4 5 2 C C250 0 1u 3 5 2 C p 9 3 C249 1u 1u C248 5 5 2 C p 9 3 0 1u C251 p 9 3 2 5 2...

Page 88: ...0 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING snTzZXWG G G Figure 4 9 5 3 MUIC check point Figure 4 9 5 4 WM9093 check point WW wZ w wX wY pj WW ...

Page 90: ...heck point Figure 5 9 6 2 Headset MIC check point wX wX wY wY D2 B2 A2 B3 C2 A4 C1 D1 E4 D4 C3 C4 UART_TX UART_RX USB_DM USB_DP AUDIO_L AUDIO_R MIC DSS _INT SDA SCL GND 22p C407 C408 22p C406 47p 100K R407 MUIC_I2C_SCL MUIC_I2C_SDA USB_DP USB_DM UART_RX_DATA UART_TX_DATA MUIC_INT_N HS_OUT_L HS_MIC_P HS_OUT_R VUSB_BUS TP1 TP1 TP2 27p C523 27p C517 C520 39p 120p C524 2 2u C519 R504 2 2K C518 0 1u 0 ...

Page 92: ... Camera Circuit Checking Point VA602 VA601 0 1u C613 3 0 6 A V 4 0 6 A V VCAM_2V8 CN601 13 12 14 11 15 10 16 9 17 8 18 7 19 6 20 5 21 4 22 3 23 2 24 1 VCAM_1V8 C610 7 5p R609 100 0 1u C612 C609 7 5p C611 0 1u R608 100 0 0 6 B F 0 2 2 CAM_MCLK CAM_PCLK CAM_I2C_SCL CAM_I2C_SDA CAM_PWDN CAM_RST_N CAM_F_DATA 7 CAM_F_DATA 0 CAM_F_DATA 1 CAM_F_DATA 2 CAM_F_DATA 3 CAM_F_DATA 4 CAM_F_DATA 5 CAM_F_DATA 6 C...

Page 94: ...LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING snTzZXWG G G Waveform Figure 4 10 2 Camera 24MHz MCLK Waveform Figure 4 10 3 Camera 48MHz PCLK Waveform ...

Page 95: ..._ID LCD_VSYNCOUT LCD_RST_N LCD_F_RD_N LCD_F_WR_N LCD_F_RS LCD_F_CS_N LCD_IF_MODE1 LCD_IF_MODE2 LCD_F_DATA 11 LCD_F_DATA 10 LCD_F_DATA 9 LCD_F_DATA 8 LCD_F_DATA 0 LCD_F_DATA 1 LCD_F_DATA 2 LCD_F_DATA 3 LCD_F_DATA 15 LCD_F_DATA 14 LCD_F_DATA 13 LCD_F_DATA 12 LCD_F_DATA 7 LCD_F_DATA 6 LCD_F_DATA 5 LCD_F_DATA 4 LCD_LED_CA1 LCD_LED_CA2 LCD_LED_CA3 TP4 TP1 TP2 FL601 0 1 9 8 4 7 3 6 2 5 1 IN1 OUT1 IN2 OU...

Page 97: ...aveform a Write to LCD TP3 TP4 TP5 TP6 TP7 Write 0022h to Index register Write GRAM data Nth pixel Write GRAM data N 1 th pixel Write GRAM data N 2 th pixel Write GRAM data N 3 th pixel Write 0022h to Index register Dummy Read 1st Read data Nth pixel 2nd Read data N 1 th pixel 3rd Read data N 2 th pixel b Read from LCD TP3 TP4 TP5 TP6 TP7 ...

Page 98: ...s LGE Internal Use Only 4 TROUBLE SHOOTING snTzZXWG G G 4 12 Vibrator Trouble Vibrator is operate when DC motor driver is enabled Check Point difference of TP1 Mot TP2 Mot Figure 4 12 1 Vibrator Trouble Circuit 5 0 5 R 0 1 5 0 5 A V 4 0 5 A V VB500 2 1 u 2 2 7 2 5 C VBAT 0 0 5 D VIBRATOR TP1 TP2 ...

Page 99: ...c All right reserved Only for training and service purposes 4 TROUBLE SHOOTING snTzZXWG G G Checking Points and Flow start TP1 Mot TP2 Mot Voltage gap is 2 4 3 6V Change the Motor END Yes Working Change Vibrator or main Board Yes Yes Operate the Vibrator NO No ...

Page 100: ...erved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING snTzZXWG G G 4 13 BT Trouble 4 13 1 BT Component Signal Path TABLE 4 13 1 Reference Description U700 BT FM MAIN CHIP X700 BT XO 26MHZ FL700 BT FILTER ANT701 BT ANTENNA ...

Page 101: ... Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING snTzZXWG G G 4 13 2 TROUBLE SHOOTING Please follow the below process 1 Check the BT Power Regulation and Supply voltage 2 Check the Clock 3 Check the signal path Checking Flow ...

Page 102: ...Z w C712 2 2u 0 0 7 B F 0 0 0 1 1 1 7 C n 0 7 4 u 2 2 0 1 7 C u 2 2 7 0 7 C 5 0 7 C u 2 2 u 1 0 9 0 7 C 0 1u C713 VBAT VBT_2V8 n 0 1 6 0 7 C U700 7 G 7 C 2 G 3 B 3 D 2 B 3 C 6 A 7 F 2 H 5 A 4 A B5 B7 E7 E6 D7 D6 B1 BT_RF UART_RX UART_TX UART_RTS UART_CTS PCM2_IN PCM2_OUT H _ N I _ G E R V H _ T U O _ G E R V X T _ M F _ D D V 1 G I D _ D D V 2 G I D _ D D V X U A _ D D V O L _ T B _ D D V O I D A ...

Page 104: ... 4 TROUBLE SHOOTING snTzZXWG G G 4 13 2 2 Check the Clock Signal BT Chip consists of two kinds of clock One is sys clock 26M the other sleep clock 32khz Board Picture Circuit Diagram w w w_ C724 12p 26MHz DSX321G 26M X700 2 1 3 4 18p C723 C726 DNI R705 470 H5 SLEEP_CLK BT_32K TP7 TP8 TP6 TP3 TP6 TP8 TP5 TP7 TP4 TP1 TP2 ...

Page 105: ...ternal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING snTzZXWG G G Check flow BT FM CLOCK Waveform SYSTEM CLOCK 26Mhz SLEEP CLOCK 32 795Khz ...

Page 106: ... the Signal path There are a filter matching circuit and BT antenna in the BT signal path The filter is for noise and spurious suppression BT antenna is multilayer chip type Board Picture Circuit Diagram C716 6 8p C715 3n FL700 2450MHz 4 2 3 1 IN OUT GND1 GND2 L704 1 8n ANT701 ALA321C3 2 1 FEEDING NC DNI C717 B1 BT_RF C714 100p C718 100n TP11 TP10 TP9 TP11 TP10 TP9 ...

Page 108: ...ING snTzZXWG G G 4 14 FM Trouble FM Radio consists of two paths One is for Ear jack the other FM Intenna As for FM intenna path There is FM LNA that improve FM sensitivity 4 14 1 FM Component Signal Path EARJACK PATH FM INTENNA PATH TABLE 4 14 1 Reference Description U700 BT FM MAIN CHIP X700 BT XO 26MHZ Q700 FM LNA ANT700 FM ANTENNA ...

Page 109: ...erved Only for training and service purposes 4 TROUBLE SHOOTING snTzZXWG G G 4 14 2 FM Radio function has trouble while plugging Ear jack Please follow the below process 1 Check the FM Power Regulation and Supply voltage 2 Check the Clock 3 Check the signal path Checking flow ...

Page 110: ...reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING snTzZXWG G G 4 14 2 1 Check the FM Power Regulation and Supply voltage FM BT Chip has two supply voltage and Power regulator Board Picture TP3 TP5 TP4 TP1 TP2 TP6 ...

Page 111: ... 0 7 C 5 0 7 C u 2 2 u 1 0 9 0 7 C 0 1u C713 VBAT VBT_2V8 n 0 1 6 0 7 C U700 7 G 7 C 2 G 3 B 3 D 2 B 3 C 6 A 7 F 2 H 5 A 4 A B5 B7 E7 E6 D7 D6 B1 BT_RF UART_RX UART_TX UART_RTS UART_CTS PCM2_IN PCM2_OUT H _ N I _ G E R V H _ T U O _ G E R V X T _ M F _ D D V 1 G I D _ D D V 2 G I D _ D D V X U A _ D D V O L _ T B _ D D V O I D A R _ T B _ D D V A N A _ D D V O I D U A _ X R _ M F _ D D V T S O H _...

Page 112: ...ING snTzZXWG G G 4 14 2 2 Check the Clock FM BT Chip consists of two kinds of clock One is sys clock 26M that come from the external XO and the other is sleep clock 32khz from MTK chip Board Picture Circuit Diagram w_ w w C724 12p 26MHz DSX321G 26M X700 2 1 3 4 18p C723 C726 DNI R705 470 H5 SLEEP_CLK BT_32K TP7 TP9 TP8 TP9 TP3 TP8 TP7 ...

Page 114: ...Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING snTzZXWG G G 4 14 2 3 Check the FM signal path FM has two signal path One is for Earjack The last is for FM intenna On the section We deal with Earjack path Board Picture TP10 TP11 ...

Page 115: ...tronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING ZD701 CN401 11 10 9 5 4 3 2 1 8 7 6 L400 270n ZD401 C418 10p FM_ANT TP10 Circuit Digram 100n L705 100n L706 27p C722 C721 1n F2 F1 FM_RX VSS_FM_AUDIO FM_ANT TP11 ...

Page 117: ...follow the below process 1 Check the FM Power Regulation and Supply voltage 2 Check the Clock 3 Check the signal path 4 14 3 1 Check the FM Power Regulation and Supply voltage Refer to 5 14 2 1 4 14 3 2 Check the Clock Refer to 5 14 2 2 4 14 3 3 Check the FM signal path FM has two signal path One is for Earjack The last is for FM intenna On the section We deal with FM Intenna path Board Picture TP...

Page 118: ...poses LGE Internal Use Only 4 TROUBLE SHOOTING Circuit Digram ANT700 ANT VX9700 FEED L701 120n ZD700 220n L700 82n L702 C700 56p FM_ANT_1 TP10 Q700 2 1 3 C725 330p 1u C701 24K R701 22n L703 R702 270 R703 4 7K C704 470n 470n C702 R700 5 1 DNI C703 FM_LNA_EN FM_ANT_1 FM_ANT TP11 TP13 TP12 TP14 ...

Page 120: ...al Use Only 4 TROUBLE SHOOTING snTzZXWG G G 4 15 RF Trouble Shooting 4 15 1 RF Component Figure 4 15 1 RF Block Component Table 4 15 1 Part Description Reference Description U100 GSM RF Transceiver U101 GSM Quad EDGE PAM FL101 Front End Module X100 26MHz Crystal SW101 Mobile Switch X100 U100 FL101 U101 SW101 ...

Page 121: ...Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING snTzZXWG G G 4 15 2 Signal Path Figure 4 15 2 GSM850 EGSM DCS PCS Signal Path A Quad Band Rx Path B Quad Band Tx Path GSM850 EGSM DCS PCS GSM850 EGSM DCS PCS GSM850 EGSM DCS PCS ...

Page 122: ...right 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING snTzZXWG G G 4 15 3 RF Trouble Check Flow ᐭG ᐮG ᐰG Figure 4 15 3 Checking Block 䀼G ...

Page 123: ...00 39p C128 220n AD6546 U100 0 2 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 21 10 22 9 23 8 24 7 25 6 26 5 27 4 28 3 29 2 30 1 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 0 4 1 4 D N G E F _ P U S V 0 5 8 X R B 0 5 8 X R 0 0 9 X R B 0 0 9 X R 0 0 8 1 X R B 0 0 8 1 X R 0 0 9 1 X R B 0 0 9 1 X R Q B B _ P U S V I Q IB QB VSUP_BBI SCLK REF_SEL SDATA SEL_26M SEN VLDO3_DRV VDD TXOP_LO REF_OP TXOP_HI REFIN VLDO3_VCO R...

Page 124: ... and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING snTzZXWG G G Figure 4 15 5 RF Power Block Checking Points Checking Flow TP1 VBAT is OK YES TP2 VPM_RF 2 8V TP3 AVDD 2 8V are OK RF Power Block is OK Check VBAT line NO Check MT6235 NO YES TP1 C125 TP2 C101 TP3 R100 ...

Page 125: ...Clock control signal Check the Main CLK and 3 wire serial bus CLK_26M RF_S_CLK DATA EN 3 wire serial bus Checking Point and Flow TP1 TP1 L101 X100 TP2 TP3 TP4 TP2 S_CLK TP3 S_DATA TP4 S_EN L101 1u C113 39p 21 22 23 24 25 26 27 28 QB SCLK SDATA SEN VDD REF_OP REFIN REFINB VSUP_REF C109 1n 26MHz DSX321G 26M X100 2 1 3 4 CLK_26M RF_S_EN RF_S_DATA RF_S_CLK TP3 TP2 TP4 TP1 ...

Page 126: ...pyright 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING snTzZXWG G G Checking Flow Signal Waveform CLK_26M RF_S_DATA RF_S_EN RF_S_CLK ...

Page 127: ... TP1 TP2 Call connection No network 56p C108 2 2K R102 R104 2 2K R103 2 2K R105 2 2K 82p C104 82p C103 AD6546 U100 24 7 25 6 26 5 27 4 28 3 29 2 30 1 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 0 4 1 4 D N G E F _ P U S V 0 5 8 X R B 0 5 8 X R 0 0 9 X R B 0 0 9 X R 0 0 8 1 X R B 0 0 8 1 X R 0 0 9 1 X R B 0 0 9 1 X R Q B B _ P U S V I Q IB QB VSUP_BBI SCLK REF_SEL SDATA SEL_26M SEN VLDO3_DRV VDD 0 1u C101 ...

Page 128: ... 100n SW101 G2 ANT RF G1 FL101 836 5 1880MHz 20 19 13 11 18 15 8 14 7 12 6 9 5 4 10 3 16 2 1 7 1 T N A GSM850RX1 GSM850RX2 GND4 GSM900RX1 VC2 GSM900RX2 GSM1800RX1 GND1 GSM1800RX2 GND2 GSM1900RX1 VC1 GSM1900RX2 GSM850_900TX GND5 GSM1800_1900TX GND3 NC1 NC2 100p C114 C117 100p 100p C124 C125 100p C129 100p ANT_FEED GND RF_ANT_SW2 RF_ANT_SW1 10p C137 C135 22p C134 22p C133 3 9p 10p C130 18n L106 C131...

Page 130: ... C110 5 6p R106 12 SKY77336 U101 23 22 24 21 25 20 26 19 27 18 28 17 9 8 10 7 11 6 12 5 13 4 14 3 15 2 16 1 DCS_PCS_IN DCS_PCS_OUT BS GND6 TX_EN GND5 VBATT VCC_OUT VAPC GND4 NC GND3 GND1 GND2 GSM_IN GSM_OUT PGND1 PGND12 PGND2 PGND11 PGND3 PGND10 PGND4 PGND9 PGND5 PGND8 PGND6 PGND7 R117 150 51 R115 R118 150 C112 22n FL101 836 5 1880MHz 20 19 13 11 18 15 8 14 7 12 6 9 5 4 10 3 16 2 1 7 1 T N A GSM85...

Page 131: ...t TP1 TP2 3dBm over Check TP3 TP4 GSM850 900 32dBm over DCS PCS 29dBm over Check TP5 GSM850 900 32dBm over DCS PCS 29dBm over RF TX Path OK Setup Test Equipment Cell Power 65dBm GSM850 190ch PCL 5 EGSM 49ch PCL 5 DCS 699ch PCL 0 PCS 660ch PCL 0 NO YES Replace AD6546 U100 NO Check PAM refer to 5 15 10 And then Replace PAM U101 NO Check FEM refer to 5 15 9 And then Replace FEM FL101 ...

Page 132: ...ignals Check FEM FL101 control signals VC1 RF_ANT_SW1 VC2 RF_ANT_SW1 FEM Control Logic TP1 TP2 FL101 836 5 1880MHz 20 19 13 11 18 15 8 14 7 12 6 9 5 4 10 3 16 2 1 7 1 T N A GSM850RX1 GSM850RX2 GND4 GSM900RX1 VC2 GSM900RX2 GSM1800RX1 GND1 GSM1800RX2 GND2 GSM1900RX1 VC1 GSM1900RX2 GSM850_900TX GND5 GSM1800_1900TX GND3 NC1 NC2 100p C124 C125 100p GND RF_ANT_SW2 RF_ANT_SW1 TP1 TP2 ...

Page 133: ...t reserved Only for training and service purposes 4 TROUBLE SHOOTING snTzZXWG G G Checking Points Checking Flow Check TP1 TP2 2 4V High Level 2 8V FEM control logic OK NO Check MT6235 U200 Check the Logic Is it OK YES NO Re download SW CAL YES TP1 TP1 ANT_SW1 TP2 ANT_SW1 ...

Page 134: ... 135 Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING snTzZXWG G G Signal Waveform TP1 TP2 at LB call TP1 TP2 ...

Page 135: ... TP2 TP3 C126 39p C111 22p 470 R108 56p C108 24K R114 R110 270 R109 20 270 R111 C127 0 1u R106 12 SKY77336 U101 23 22 24 21 25 20 26 19 27 18 28 17 9 8 10 7 11 6 12 5 13 4 14 3 15 2 16 1 DCS_PCS_IN DCS_PCS_OUT BS GND6 TX_EN GND5 VBATT VCC_OUT VAPC GND4 NC GND3 GND1 GND2 GSM_IN GSM_OUT PGND1 PGND12 PGND2 PGND11 PGND3 PGND10 PGND4 PGND9 PGND5 PGND8 PGND6 PGND7 0 1u C116 C115 0 1u 220p C121 VBAT 3 1 ...

Page 136: ...pyright 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING snTzZXWG G G Checking points and Flow Checking Flow TP1 BS TP2 TX_EN TP3 VAPC ...

Page 137: ...10 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING snTzZXWG G G Signal Waveform TP1 BS signal for HB call TP2 TP3 for LB call PCL5 TP2 TP3 for HB call PCL0 TP3 VAPC TP2 TX_EN TP3 VAPC TP2 TX_EN ...

Page 150: ... 151 Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 5 DOWNLOAD LGS310 LGS310 LGS310 LGS310 LGS310 LGS310 LGS310 LGS310 ...

Page 154: ...ctronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 6 BLOCK DIAGRAM 6 BLOCK DIAGRAM 41 V vwhp KZ Eorfn Gldjudp Urvhpdu Wrwdo Eorfn Gldjudp uUSB Connector 5Pin MUIC TS5USBA33402YZPR Switch ...

Page 158: ... HP_MIC_P HS_OUT_R HS_OUT_L MUIC_IO_P MUIC_IO_M MUIC_ACC_ID RCV_SPK_OUT_P RCV_SPK_OUT_N MAIN MIC Speaker BT FM BC7820 HPR HPL IN1 IN1 OUT OUT AU_VIN0_P AU_VIN0_N AU_MOUT_R AU_MOUT_L AU_OUT0_P AU_OUT0_N MT6235 GPIO74 VBAT HP_MIC_N HS_MIC_P FM_R FM_L SPK_N SPK_P Analog SW DG2735DN IN3 IN3 IN2 IN2 RCV_SPK_N RCV_SPK_P AUD_RCV_SPK_SEL RCV_P RCV_N Receiver AU_VIN1_P AU_VIN1_N FM_REC_I2S_CLK FM_REC_I2S_W...

Page 160: ...8 14 7 12 6 9 5 4 10 3 16 2 1 7 1 T N A GSM850RX1 GSM850RX2 GND4 GSM900RX1 VC2 GSM900RX2 GSM1800RX1 GND1 GSM1800RX2 GND2 GSM1900RX1 VC1 GSM1900RX2 GSM850_900TX GND5 GSM1800_1900TX GND3 NC1 NC2 100p C114 R113 1K C117 100p 100p C124 VBAT C128 220n 10p C130 AD6546 U100 0 2 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 21 10 22 9 23 8 24 7 25 6 26 5 27 4 28 3 29 2 30 1 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 0 4 1 ...

Page 161: ... I M E _ 3 3 D D V 3 I M E _ 3 3 D D V 4 I M E _ 3 3 D D V 5 I M E _ 3 3 D D V M A C _ 3 3 D D V 1 D C L _ 3 3 D D V 2 D C L _ 3 3 D D V B S U _ 3 3 D D V B S U _ C D D V C M _ 3 3 D D V 1 _ 3 3 D D V 2 _ 3 3 D D V 3 _ 3 3 D D V 4 _ 3 3 D D V 1 _ 3 3 S S V 2 _ 3 3 S S V 3 _ 3 3 S S V 4 _ 3 3 S S V 5 _ 3 3 S S V 6 _ 3 3 S S V 7 _ 3 3 S S V 8 _ 3 3 S S V 9 _ 3 3 S S V 0 1 _ 3 3 S S V 1 1 _ 3 3 S S V...

Page 162: ... M6 L3 K6 K4 M5 K3 K5 J4 L8 F4 J8 E3 L7 E4 J7 D3 L6 D4 J6 C3 L5 C4 J5 B3 0 1 P 9 P 2 P 1 P 0 1 N 1 N 0 1 B 1 B 0 1 A 9 A 2 A 1 U N D 2 U N D 3 U N D 4 U N D 5 U N D 6 U N D 7 U N D 8 U N D 9 U N D 0 1 U N D 1 1 U N D DQ0 IO0 DQ1 IO1 DQ2 IO2 DQ3 IO3 DQ4 IO4 DQ5 IO5 DQ6 IO6 DQ7 IO7 DQ8 IO8 DQ9 IO9 DQ10 IO10 DQ11 IO11 DQ12 IO12 DQ13 IO13 DQ14 IO14 DQ15 IO15 _CS CLK VDD1 CKE VDD2 _WED VDD3 BA0 VDD4 BA...

Page 163: ... u 1 4 1 4 C 6 1 4 C u 1 BQ25040 U402 EUSY0388501 6 5 7 4 8 3 9 2 10 1 11 PGND IN BAT ISET _PG VSS1 CHG LDO VSS2 IFULL EN_SET K 3 4 1 4 R N I _ G H C _ B S U V VIO_2V8 K 0 0 1 9 0 4 R C404 1u C400 0 1u R401 1K 39p C403 ZD400 VBAT CN400 3 2 1 D1 D2 TP400 R400 47K VIO_2V8 R406 2 2K 22p C407 R402 2 2K VIO_2V8 C402 1u S U B _ B S U V C408 22p VBAT C406 47p 100K R407 C401 0 1u L400 270n ZD401 C418 10p ...

Page 164: ...04 1000 C514 2 2u 2 1 5 C u 2 2 C516 2 2u C515 2 2u 1u C507 WM9093ECS R EUSY0403901 IC500 3 B A4 C3 C2 2 B D1 D3 4 D C1 A1 D2 1 B D5 A2 A5 A3 B5 4 B C5 4 C D N G OUT D D V P H CPVDD CPVSS CN HPL OUT S A I B IN2 HPR IN1 D D V S IN3 IN2 A D S IN1 IN3 CP L C S VBAT 220 FB503 1V8_AMP 1 0 5 R 0 2 2 0 5 R 0 2 C501 0 1u 0 1 5 C u 1 0 u 1 0 1 1 5 C 3 1 5 C u 2 2 1000 FB505 0 1u C521 CN500 2 1 u 2 2 7 2 5 ...

Page 165: ...CL SDA LED2 LED1 VOUT G _ G U L S VBAT C603 2 2u R605 100K C606 1u 1u C605 C604 1u 1u C602 VBL_LDO_2V8 C611 0 1u R608 100 0 0 6 B F 0 2 2 8 V 1 _ M E M V 8 V 2 _ O I V VBAT VBAT LCD_MAKER_ID CAM_MCLK CAM_HSYNC CAM_VSYNC CAM_PCLK CAM_I2C_SCL CAM_DATA 7 CAM_DATA 6 CAM_DATA 5 CAM_DATA 4 CAM_DATA 3 CAM_DATA 2 CAM_DATA 1 CAM_DATA 0 CAM_I2C_SDA LCD_VSYNCOUT CAM_PWDN LCD_CS_N LCD_RST_N LCD_RS LCD_WR_N LC...

Page 166: ...A N A _ G E R _ S S V S D A P _ G I D _ S S V 1 C N S S V T U O _ L A T X BT_RF VSS_BT_RF_BAL FM_RX VSS_FM_AUDIO FM_TX_P FM_TX_N UART_RX UART_TX UART_RTS UART_CTS PCM2_IN PCM2_OUT PCM2_SYNC PCM2_CLK AUDIO_OUT_L AUDIO_OUT_R AUDIO_IN_L AUDIO_IN_R SLEEP_CLK VREG_ENABLE_RST XTAL_IN SYS_CLK PIO_0 PIO_2 PIO_3 H _ N I _ G E R V H _ T U O _ G E R V X T _ M F _ D D V 1 G I D _ D D V 2 G I D _ D D V X U A _...

Page 167: ...13 12 14 11 15 10 16 9 17 8 18 7 19 6 20 5 21 4 22 3 23 2 24 1 G1 G2 G3 G4 CN801 4 3 2 1 4 0 8 A V VBAT VA800 VA801 VA802 0 0 8 C p 9 3 1 0 8 C p 9 3 0 0 8 D 4 3 5 2 6 1 1 0 8 D 4 3 5 2 6 1 u 0 1 2 0 8 C 3 0 8 A V VMIC_BIAS_P MIC_N MIC_P VMIC_BIAS_N END_KEY MAIN_KEY_BACKLIGHT KEY_IN 1 KEY_OUT 4 KEY_IN 0 KEY_IN 0 KEY_IN 2 KEY_IN 3 KEY_IN 4 KEY_OUT 0 KEY_OUT 0 KEY_OUT 1 KEY_OUT 1 KEY_OUT 2 KEY_OUT 3...

Page 168: ...2 24 1 G1 G2 G3 G4 VMIC_BIAS_P UNIT 42dB 4 72 3 76 1 25 SPM0410LR5H QB MIC100 SUMY0010610 6 5 4 3 2 1 OUT G1 G2 G3 PWR G4 SW100 G1 ANT G2 ANT101 ANTENNA_PAD VMIC_BIAS_P VBAT KB119 100 R106 R105 100 R103 100 100 R102 R101 100 100 R100 100 R104 LD101 LD102 LD103 LD104 LD105 VBAT LD107 LD106 ANT100 ANTENNA_PAD C105 33n KB100 KB101 KB104 KB105 KB106 KEY_IN 5 KEY_IN 5 KEY_OUT 2 KEY_OUT 2 KEY_OUT 1 KEY_...

Page 169: ...ice purposes 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 L K J I H G F E D C B A L K J I H G F E D C B A 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 KB100 KB101 CN100 4 3 2 1 KEY_OUT 1 KEY_OUT 1 KEY_OUT 0 KEY_OUT 0 KEY_IN 0 KEY_IN 0 VOL DOWN Main to Volume Key FPCB VOL UP VOL UP VOL DOWN Volume Key 7 CIRCUIT DIAGRAM ...

Page 170: ...171 Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 8 BGA Pin Map 8 BGA Pin Map 1 BGA PIN MAP MT6235 Baseband Chipset ٛ U200 bottom view ...

Page 173: ... Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 8 BGA Pin Map WM9093 Ultra Low Power Audio Subsystem IC500 EUSY0403901 20 bump CSP package Top View ...

Page 174: ... 175 Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 8 BGA Pin Map BlueCore BC7820 WLCSP 0 4MM pitch Orientation from Top of Device ...

Page 176: ...605 R211 R210 3 0 6 C C605 C606 0 3 2 R 9 2 2 R 1 3 2 R 4 0 8 A V D800 6 2 2 R D801 C407 C200 R213 3 3 2 R 4 3 2 R C222 7 1 2 C 0 2 2 C 1 2 2 C 9 1 2 C 8 1 2 C C401 C600 R407 C408 4 0 6 C C201 C257 C216 C226 C210 C202 C256 C203 9 0 6 C R212 R214 C224 8 0 6 R R207 4 1 2 C 5 1 2 C 3 1 2 C FB200 2 1 2 C FB201 9 0 2 C 1 1 2 C 8 2 2 R 0 0 4 P T 6 0 3 C U400 C417 R406 9 0 2 R C409 2 0 4 R 8 0 2 R 9 0 3 ...

Page 177: ...C 7 0 1 L 7 1 1 R 8 1 1 C 0 0 1 L F FL102 1 0 7 D Z 4 0 6 L F 6 0 6 L F 3 1 1 R 3 2 1 C 0 0 1 U FL101 7 1 7 C 4 1 7 C 5 1 7 C 2 0 6 L F 1 0 6 L F 7 0 6 C 8 1 4 C 0 0 4 L L106 6 3 1 C 1 3 1 C L105 4 3 1 C 2 3 1 C 3 3 1 C 5 3 1 C 4 1 1 C 1 2 1 C 4 1 1 R C115 2 1 1 R 8 2 1 C 2 0 1 L 1 0 4 D Z BAT200 C126 C111 C108 C116 C127 R102 R104 C100 3 0 1 C 7 3 1 C C225 R201 LG S310_MAIN_SPFY0234701 1 0 BOT CN5...

Page 178: ...104 LD100 R104 KB115 R103 LD103 R106 LD106 R100 6 1 1 B K 0 1 1 B K KB104 KB109 KB114 KB119 LD107 LD105 R107 KB111 R102 LD102 R101 LD101 R105 KB106 KB100 KB101 KB103 KB108 KB113 KB118 0 2 1 B K 5 0 1 B K KB102 KB107 KB112 KB117 LG S310_F_KEY_SPCY0245001_1 0_TOP LD106 White Keypad LED No Key Backlight on KB114 Dome Key No Button Input ...

Page 179: ...V 1 0 1 C L102 2 0 1 A V 8 0 1 R 0 0 1 L L105 MIC100 ANT100 C102 0 0 1 W S C103 5 0 1 C MIC100 MEMS MIC Bottom Type No MIC input CN100 BtB Connector No Key Input No MIC input L102 Key Inducdor 0 key recognition L105 Key Inducdor 3 6 9 key recognition L103 Key Inducdor 1 4 7 key recognition L104 Key Inducdor 2 5 8 0 key recognition SW100 RF Cable Connector No Antenna Bar No Network ANT100 Main Ante...

Page 180: ... Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes LG S310_F_SK_VOL_SPKY0092901_TOP 0 0 1 N C 0 0 1 B K 1 0 1 B K KB101 Volume Key No volume up button input CN10 Side Key FPCB Pad No volume key input ...

Page 182: ...0 CALIBRATION z Procedure 1 Click Hecaton exe in below directory to set RF cable loss on test equipment 9 C LGE Tachyon Utilities 2 After selecting Select File button select right RF cable loss file corresponding to RF cable that you use 10 2 Usage of Tachyon for RF Calibration and Test 10 2 1 Preparation work for setting RF cable loss ...

Page 183: ...o execute Tachyon program C LGE Tachyon 2 Click System Option Setting icon in the menu to set COM port 9 Unselect UART Port that can communicate with phone in the Shield Box 1 message 9 Click the OK button 3 Click User Model Selection icon in the menu to set model configuration 9 Do double click model buyer name that you want to calibrate and test 9 Click the Select button System Option Setting Us...

Page 184: ...3 Log of RF Calibration and Test z Contents 9 On Running log window is created in upper area It displays logs of phone commands and measurements for RF calibration and test 9 The result files are saved in below directory C LGE Tachyon Report CalData the file of RF calibration result C LGE Tachyon Report TestData the file of RF test result ...

Page 185: ... MODE Phone Test Mode LG S310 1 Enter the Engineer Menu 2 Tap 1 Device Test 3 Tap 1 All Auto Test 11 TEST MODE Phone Test Mode Scenario Item Order Description 1 Key Press Test 1 Key Test 2 Test Finished OK next step Key Test Press all keys for test UP key Down key Right key Left key Press OK button Center Key Move to next step ...

Page 186: ... TEST MODE w G Gt Gz Item Order Description 2 Speaker Test 1 Sound On Auto 2 Test Finished OK next step Ringtone MP3 is played regularly Press OK button Center Key Move to next step w G Gt Gz Item Order Description 3 Vibrator Test 1 Vibrator On Auto 2 Test Finished OK next step Press OK button Center Key Move to next step ...

Page 187: ...rposes 11 TEST MODE w G Gt Gz Item Order Description 4 External Memory Test 1 Insert SD or remove SD 2 Test Finished OK next step SD not inserted status Press OK button Center Key Move to next step SD insert status w G Gt Gz Item Order Description 1 Key Press Test 1 Key Test 2 Test Finished OK next step Key Test ...

Page 188: ...cs Inc All right reserved Only for training and service purposes LGE Internal Use Only 11 TEST MODE w G Gt Gz Item Order Description 6 Loopback Test 1 Loopback On Auto 2 Press OK Button And TEST END Press OK button Center Key TEST END ...

Page 190: ...2 EXPLODED VIEW REPLACEMENT PART LIST 12 1 EXPLODED VIEW LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 47 4 4 464 4 1 48 4 3 463 4 41 47 8 5 ...

Page 192: ...ly AGQ86294601 LGS310ACHNSVSV Silver 2 ACQ100400 CoverAssembly EMS ACQ85320001ත10 LGS310 ACHNSVSV Silver 3 ACGK00 CoverAssembly Front ACGK0167601ත10 LG S310INDSVZZ WithoutColor 4 MBFZ00 Bracket MBFZ0052401 COMPLEXLG S310INDSVZZ WithoutColorBracketLCD 4 MBJZ00 Button MBJZ0039501 COMPLEXLG S310INDSVZZ WithoutColorVol Key 4 MCJK00 Cover Front MCJK0133501 COMPLEXLG S310INDSVZZ WithoutColorMOLD PCLUPOY...

Page 193: ...Receiver 4 MPBZ00 Damper MPBZ0336801 COMPLEXLG S310INDSVZZ WithoutColorPadReceiver2 4 MTAD00 Tape Window MTAD0131901 COMPLEXLG S310INDSVZZ WithoutColorCamera 4 MTAZ00 Tape MTAZ0356601 COMPLEXLG S310INDSVZZ WithoutColorBracketUSB 4 MTAZ01 Tape MTAZ0356701 COMPLEXLG S310INDSVZZ WithoutColorBracketCable 4 MTAZ03 Tape MTAZ0376101 COMPLEXLG S310INDSVZZ WithoutColorStickerSDCard 4 MWAE00 Window Camera M...

Page 194: ...G S310INDSVZZ WithoutColorCOMPLEX empty 5 MBK070300 Can Shield MCBA0081801 COMPLEXLG S310INDSVZZ WithoutColorPRESS STS 5 MEZ000000 Label MLAZ0038301 COMPLEXLG VX6000ZZ WithoutColorPIDLabel4ArrayPRINTING 6 SC100 Can Shield MCBA0081901 COMPLEXLG S310INDSVZZ WithoutColor 6 ANT700 Contact Antenna MCIA0019501 COMPLEXLG VX9700VRZZZ WithoutColor 3 GMZZ00 Screw Machine GMZZ0017701 GMZZ0017701BH 1 4mM3mMMS...

Page 195: ... C101 Capacitor Ceramic Chip ECZH0001215 C1005X5R1A105KT000F1uF10 10VX5R 55TO 85C1005R TP TDKKOREACOOPERATION 7 L100 L101 L102 L103 L104 L105 Inductor Multilayer Chip ELCH0001421 LL1005 FHL47NJ47NH5 0V200mA1 3OHM1 2GHZ10NONSHIELD 11 0X0 5X0 5MMR TPTOKO INC 7 CN100 Connector BtoB ENBY0045101 AXT52412424P0 4MMSTRAIGHTSOCKETSMDR TP1M BJPANASONICELECTRONICPARTSCO LTD 7 SW100 connector RF ENWY0003901 U...

Page 196: ...72715801ත4 LGS310 ACHNSVMAIN1 0 5 EBR071600 PCBAssembly Main SMTBottom SAFC0153301ත75 LG S310MAIN1 0 6 C130 C131 C136 C137 C418 Capacitor Ceramic Chip ECCH0000110 MCH155A100D10pF0 25PF50VNP0 55TO 125C1005R TP ROHMSemiconductorKOREACORPORATION 6 C111 C134 C135 C301 C302 Capacitor Ceramic Chip ECCH0000115 MCH155A220JK22pF5 50VNP0 55TO 125C1005R TP ROHMSemiconductorKOREACORPORATION 6 C100 C105 C126 C...

Page 197: ...P TDKKOREACOOPERATION 6 C122 C128 Capacitor Ceramic Chip ECZH0001216 C1005X5R1A224KT000E220nF10 10VX5R 55TO 85C1005R TP TDKKOREACOOPERATION 6 C101 C115 C116 C123 C127 C225 Capacitor Ceramic Chip ECZH0003103 GRM36X7R104K10PT100nF10 10VX7R 55TO 125C1005R TP MURATAMANUFACTURINGCO LTD 6 C404 Capacitor Ceramic Chip ECZH0003503 GRM188R61E105K1uF10 25VX5R 55TO 85C1608R TP MURATAMANUFACTURINGCO LTD 6 ZD40...

Page 198: ... Chip ERHY0000105 MCR01MZP5F51R051OHM1 1 16W1005R TP ROHMSemiconductorKOREACORPORATION 6 R301 R302 R303 R304 R305 Resistor Chip ERHY0000275 MCR01MZP5J56356KOHM5 1 16W1005R TP ROHMSemiconductorKOREACORPORATION 6 R609 Resistor Chip ERHY0003301 MCR01MZP5J101100OHM5 1 16W1005R TP ROHM 6 R600 R601 Resistor Chip ERHZ0000203 MCR01MZP5F100210KOHM1 1 16W1005R TP ROHMSemiconductorKOREACORPORATION 6 R602 Res...

Page 199: ...ISHINKUCORPORATION 6 FL102 Coupler RFBi Directional SCDY0004801 HHM2909C41 0 0 5 0 4SMDCOUPLER777M 787M 824M 925M 1710M 1785M 1850M 1910M0SMDR TP20 4dB 19 4 dB 13 5dB 12 8dB0 25 0 25 0 50 0 55321 0 0 5 0 4 SMD 824 M 925M 4PINTDKCORPORATION 6 FL100 Coupler RFBi Directional SCDY0005001 HHM2920A1 16 5dB 0 28dB 31dB 1 0 0 5 0 4 SMD 1710M 1910M 4PIN 1 810MHz 200MHz SMD R TPTDKCORPORATION 6 R101 Thermis...

Page 200: ...0J15pF5 50VNP0 55TO 125C1005R TP ROHMSemiconductorKOREACORPORATION 6 C258 C723 Capacitor Ceramic Chip ECCH0000113 MCH155A180J18pF5 50VNP0 55TO 125C1005R TP ROHMSemiconductorKOREACORPORATION 6 C407 C408 C411 C417 Capacitor Ceramic Chip ECCH0000115 MCH155A220JK22pF5 50VNP0 55TO 125C1005R TP ROHMSemiconductorKOREACORPORATION 6 C517 C523 C722 Capacitor Ceramic Chip ECCH0000117 CL05C270JB5NNNC27pF5 50V...

Page 201: ...37 C238 ChipCeramicCapacitor MLCC ECCH0006201 C1608X5R0J475KT000N4 7uF10 6 3VX5R 55TO 85C1608R TP TDKCORPORATION 6 C205 C208 Capacitor Ceramic Chip ECCH0007803 CL10A106MP8NNNC10uF20 10VX5R 55TO 85C1608R TP0 8MMSAMSUNGELECTRO MECHANICSCO LTD 6 C500 C527 C712 Capacitor Ceramic Chip ECCH0007804 CL05A225MP5NSNC2 2uF20 10VX5R 55TO 85C1005R TP0 5MMSAMSUNGELECTRO MECHANICSCO LTD 6 C609 Capacitor Ceramic ...

Page 202: ...100mA0A0SEC200mWVMN2R TP2P1R OHM 6 D800 D801 Diode TVS EDTY0007601 UCLAMP0505A5V612V7A100WSC89R TP6P5SEMTECHCO RPORATION 6 C703 ZD700 Diode TVS EDTY0009401 VMNZ6 8CST2R5 5V010V0A200mWSC70R TP6P5ROHM 6 L702 Inductor Multilayer Chip ELCH0001425 LL1005 FHL82NJ82NH5 0V200mA1 9OHM970MHZ10NONSHIELD 11 0X0 5X0 5MMR TPTOKO INC 6 L705 Inductor Multilayer Chip ELCH0001430 LL1005 FHLR10J100NH5 0V200mA2 2OHM8...

Page 203: ...264 MCR01MZP5F30013000ohm 1 16W F 1005 R TPROHMSe miconductorKOREACORPORATION 6 R705 Resistor Chip ERHZ0000285 MCR01MZP5F4700470OHM1 1 16W1005R TP ROHMSemiconductorKOREACORPORATION 6 R207 Resistor Chip ERHZ0000294 MCR01MZP5F51015 1KOHM1 1 16W1005R TP ROHMSemiconductorKOREACORPORATION 6 R505 Resistor Chip ERHZ0000402 MCR01MZP5J10010OHM5 1 16W1005R TP ROHMSemiconductorKOREACORPORATION 6 R205 R218 R4...

Page 204: ...SUNGELECTRONICCO LTD 6 U200 IC DigitalBasebandPro cessor GSM EUSY0394301 MT62350VTO0V0WBGAR TP362P MEDIATEKINC 6 IC500 IC AudioSubSystem EUSY0403901 WM9093ECS R1 71 5 5V0WWLCSPR TP20P WOLFSONMICROELECTRONICSPLC 6 U700 IC Bluetooth EUSY0411201 BC7820A12 ICKC R2 3VTO5 5V108 9mWWLCSPR TP55P CSR 6 X200 Crystal EXXY0018701 FC 135 12 5PF 20PPM 32 768KHZ20PPM12 5PF32 15SMDR TPSEIKOEPS ONCORP 6 X700 Cryst...

Page 205: ...M18PC104R1C3ESD EMI0HZ0 1uF0HSMDR TPMURAT AMANUFACTURINGCO LTD 6 SPFY PCB Main SPFY0234701 SPFY0234701FR 4StaggeredviaSTAGGERED 100 8LG S310INDSV MAIN D FR 40 8mm STAGGERED 10UNITECHPRINTEDCIRCUITBOARDCORP 3 SVCY00 CameraModule SVCY0024501 LM36SSFFHSIS LM36SSFF3MFF Samsung 1 5 7x7x4 1 FPCB 90degreeHA NSUNGELCOMTECCO LTD 3 EAJ020200 LCD Module TFT SVLM0036102 GPM1031A0Main 2 2 176 220 39 848 52 95 ...

Page 206: ...umIon SBPL0100002 LGIP 550N CN TOPRISMATIC3 7V900mAH180mAH36X50X5 339 5X41 6X 5 75BLACKFrameType TOCADDONGHWA 2 EBX000000 Accessory DataCable SGDY0018701 LG0033 1 2M MicroUSB5PIN BLACK ID180K ningbobroadtel ecommunicationco ltd 2 EAY060000 Adapters SSAD0036201 STA U12CD90Vac 264Vac5 1V700mA5060CCCNONENONE DONGDOELECTRONICSCO LTD 2 EAY060000 Adapters S SSAD0036202 90Vac 264Vac5 1V700mA5060CCCNONENO...

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