LG LG-T310i Service Manual Download Page 66

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LGE Internal Use Only

4. TROUBLE SHOOTING

ͽ͸Ͷ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑΀ΟΝΪ

]_VX[^

CHECKING FLOW

4. TROUBLE SHOOTING

Check TP1 of SW401

TP1 Signal is OK?

Replace Mobile SW (SW401)

Yes

Mobile SW & TX Module is OK.

Check PMB8810(U102)

Control Signal is

(BS1, BS2,BS3)OK ?

Yes

Check TP4 of U404 ?

Replace TX Module (U404)

TP2(High Band),

TP3(Low Band)

Signal is OK ?

Yes

EGSM Rx

Summary of Contents for LG-T310i

Page 1: ...Service Manual Model LG T310i Internal Use Only Service Manual LG T310i Date September 2010 Issue 1 0 ...

Page 2: ...Vibrator Interface 61 4 TROUBLE SHOOTING 63 4 1 RF Component 63 4 2 RXTrouble 64 4 3TXTrouble 68 4 4 Power OnTrouble 72 4 5 ChargingTrouble 75 4 6VibratorTrouble 77 4 7 LCDTrouble 80 4 8 CameraTrouble 84 4 9 Speaker ReceiverTrouble 88 4 10 EarphoneTrouble 91 4 11 MicrophoneTrouble 94 4 12 SIM Card InterfaceTrouble 96 4 13 Micro SD uSD Trouble 98 4 14 BluetoothTrouble 100 4 15 FM RadioTrouble 103 4...

Page 4: ...acilities accessed through or connected to it The manufacturer 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 telephone ...

Page 5: ...Attenuation Phone 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 whe...

Page 6: ...termediate Frequency IF International Portable User Identity IPUI Global System for Mobile Communications GSM General Purpose Interface Bus GPIB Gaussian Minimum Shift Keying GMSK Flexible Printed Circuit Board FPCB Electrostatic Discharge ESD Electrical Erasable Programmable Read Only Memory EEPROM Digital Signal Processing DSP dB relative to 1 milli watt dBm Digital Communication System DCS Digi...

Page 7: ...eiver Transmitter UART Time Division Multiple Access TDMA Time Division Duplex TDD Travel Adapter TA Side Tone Masking Rating STMR Pseudo SRAM PSRAM Static Random Access Memory SRAM Sending Loudness Rating SLR Subscriber Identity Module SIM Surface Acoustic Wave SAW Real Time Clock RTC Root Mean Square RMS Receiving Loudness Rating RLR Radio Frequency RF Public Switched Telephone Network PSTN Phas...

Page 8: ... Level 7 Stand by time Up to 350 hours Paging Period 5 RSSI 85 dBm Charging time Approx 2 5 hours RX Sensitivity GSM EGSM 109dBm DCS 109dBm TX output power GSM EGSM 32 3dBm Level 5 DCS PCS 29 5dBm Level 0 SIM card type 3V 1 8V Display MAIN 2 8 TFT 240 Ý 320 pixel 262K Color Status Indicator Send Key End Key Cancel Key Volume Up Down Key PWR Key ANT Internal EAR Phone Jack Yes PC Synchronization Ye...

Page 9: ...ining and service purposes 2 PERFORMANCE ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XWVX 2 SYSTEM SPECIFICATION Travel Adapter Yes Speaker Receiver 18x12Ȱ Speaker Receiver MIDI SW MIDI Mono SPK Item Feature Comment Camera 2 0M FF Bluetooth FM Radio Bluetooth version 2 1 76 108MHz supported 18x12Ȱ Speaker Receiver ...

Page 10: ...Hz 2 Phase Error RMS 5 degrees Peak 20 degrees 3 Frequency Error 0 1 ppm 4 Power Level Level Power Toler Level Power Toler 6 31dBm 3dB 14 15dBm 3dB 7 29dBm 3dB 15 13dBm 3dB 8 27dBm 3dB 16 11dBm 5dB 9 25dBm 3dB 17 9dBm 5dB 10 23dBm 3dB 18 7dBm 5dB 11 21dBm 3dB 19 5dBm 5dB 12 19dBm 3dB GSM850 EGSM 5 33dBm 2dB 13 17dBm 3dB Level Power Toler Level Power Toler 1 28dBm 3dB 9 12dBm 4dB 2 26dBm 3dB 10 10d...

Page 11: ... dBc 100 0 5 200 30 250 33 400 60 600 1 200 60 1 200 1 800 60 1 800 3 000 63 3 000 6 000 65 6 000 71 GSM850 EGSM Offset from Carrier kHz Max dBc 100 0 5 200 30 250 33 400 60 600 1 200 60 1 200 1 800 60 1 800 3 000 65 3 000 6 000 65 6 000 73 DCS PCS 6 Output RF Spectrum due to switching transient GSM850 EGSM Offset from Carrier kHz Max dBm 400 19 600 21 1 200 21 1 800 24 Item Description Specificat...

Page 12: ...ng transient Offset from Carrier kHz Max dBm 400 22 600 24 1 200 24 1 800 27 7 Spurious Emissions Conduction Emission Status 8 Bit Error Ratio GSM850 EGSM BER Class II 2 439 102 dBm DCS PCS BER Class II 2 439 100 dBm 9 RX Level Report Accuracy 3 dB 10 SLR 12 3 dB 11 Sending Response 300 12 1 000 6 2 000 6 3 000 6 Frequency Hz Max dB Min dB 100 200 4 000 3 400 9 0 0 4 4 12 0 0 4 12 RLR 4 3 dB DCS P...

Page 13: ... 2 12 0 2 2 14 STMR 17 dB Mean that Adopt a straight line in between 300 Hz and 1 000 Hz to be Max level in the range 15 Stability Margin 6 dB 20 10 0 7 dB to ARL dB Level Ratio dB 35 30 10 30 7 33 3 33 7 31 7 17 5 22 5 25 5 16 Distortion 17 Side Tone Distortion Three stage distortion 10 18 System frequency 13 MHz tolerance 2 5 ppm 19 32 768KHz tolerance 30 ppm 20 Ringer Volume At least 55 dBspl u...

Page 14: ...2 Antenna Display 2 1 1 0 Battery Bar Number Voltage 3 3 2 3 71 0 05 V 23 Battery Indicator 24 Low Voltage Warning Blinking Bar 3 45 0 05V Call 1 time per 1 minute Receiver 3 45 0 05V Standby 1 time per 3 minute Speaker 25 Forced shut down Voltage 3 35 0 05V 27 Battery Type Lithium Ion Battery Standard Voltage 3 7 V Battery full charge voltage 4 2 V Capacity 900mAh 28 Travel Charger Switching mode...

Page 15: ...or training and service purposes 3 TECHNICAL BRIEF 3 TECHNICAL BRIEF ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 16 147 3 TECHNICAL BRIEF 3 1 Digital Main Processor Figure 3 1 1 X Gold tm 213 Hardware Block Diagram 3 TECHNICAL BRIEF 3 1 Digital Main Processor Figure 3 1 1 X Gold tm 213 Hardware Block Diagram ...

Page 16: ...r Dual band direct conversion receiver Tri Quad band possible with external circuitry Fully integrated digital controlled X0 Additional buffer for 2 external system clocks Fully digital RF Synthesizer incl ȭȟ Transmitter 3 1 3 Baseband DSP 156 MHz TeakLite MCU ARM1176 208 MHz MCU RAM 3 00Mbit Memory I F 512 Mbit Modem GPRS class 12 RX TX CS1 CS4 EGPRS class 12 RX MCS1 MCS9 TX MCS1 MCS4 Cipher Unit...

Page 17: ...l Bus Unit 25 bit address bus 512 Mbit 16 bit data bus 1 8V 2 8V support Flash RAM NOR Type Serial Flash SPI and SPI 4 Parallel Flash Page Burst Mode 16 bit Demultiplexed 16 bit AD multiplexed 16 bit AAD multiplexed iNAND Type e g oneNAND Memory card SD MMC card interface with 1 or 4 data lines 3 1 5 Connectivity 3xUSIF configurable either as SPI or UART I2C I2S Interfaces 1 8V Direct U SIM 1 8 3V...

Page 18: ... 100 mW 16 ȳ Digital microphone supported Differential microphone inputs 3 1 7 FM Radio Integrated FM radio FM Stereo RDS Receiver Sensitivity 2 ɆV EMF Support for US EU bands Stereo recording 3 1 8 Power Management Direct to Battery Connection LDOs incl capless DC DC step down converter DC DC step up for white LED supply Battery Type Li Polymer Charging control Battery temperature Watchdog protec...

Page 19: ... Video post processing Scaling Rotation 90 steps Mirroring Overlay with alpha blending Color conversion YUV RGB 2D vector graphics Lines filled rectangles Bit block transfer e g sprites scrolling antialiased bitmap fonts 3 1 10 Camera 2 0 Mpxls FF Frame Rate 15 UXGA 30 SVGA 39 MHz Pixel Rate 15 fps 1 3 Mpx full resolution 3 1 11 Video Capabilities Video Decoding MPEG 4 H 263 QCIF 30 fps QVGA 15fps...

Page 20: ...ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ YXVX 3 2 Power Management A mobile platform requires power supplies for different functions These power supplies are generated in the integrated power management Unit PMU The PMU is designed to deliver the power for a typical standard phone Figure 3 2 1 Block Figure of the PMU Modules X Gold tm 213 3 TECHNICAL BRIEF ...

Page 21: ...rter The VSIM output current is high enough to drive USB SIM cards LCORE The LCORE LDO provides the VCORE supply used for most of the digital parts of the chip LPMU The LPMU provides VPMU sued for the PMU supply e g for the startup state machine and analog parts like ADC sense amplifier etc LUSB The LUSB LDO generates the supply for the USB transceiver output driver and input If no USB interface i...

Page 22: ...ht 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 TECHNICAL BRIEF ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ YZVX 3 TECHNICAL BRIEF Table 3 2 1 Power supply Domains without RF ...

Page 23: ...e power up sequence driven by the PMU state machine can be seen in Figure18 After enabling the reference HPGB and waiting for the settling time the battery voltage is measured and compared with the power on threshold If the battery voltage is high enough the SD1 DC DC converter and the LCORE LDO are started A timer ensures that the supply voltage will be stable before the DCXO is enabled The DCXO ...

Page 24: ...ll right reserved Only for training and service purposes LGE Internal Use Only 3 TECHNICAL BRIEF ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ Y VX 3 TECHNICAL BRIEF Figure 3 2 1 First Part of the State Machine Running in Different Power Domains than the Second Part ...

Page 25: ...pyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ Y VX 3 TECHNICAL BRIEF Figure 3 2 2 Second Main Part of the Startup State Machine in the VPMU Domain ...

Page 26: ... and detected and the battery is charged above the SYSONPRE voltage level the system will start up The PMU main state machine waits in the Check battery state until the battery voltage condition is fulfilled The charger state machine provides the necessary pre charge indication signal This pre charge signal is denounced in a small counter to have a stable signal This is important especially in hal...

Page 27: ...Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ Y VX 3 TECHNICAL BRIEF Figure 3 2 3 Start Up Sequence triggered by First Connect Event ...

Page 28: ...scu_n_o signal This signal controls for example the ɆC subsystem and releases reset for the controller During normal start up the PMU releases the reset_pmu_n_o signal after entering the SYSTEM ON state At this time the resetout_o signal is high the RESET_N pad is not pulled low and therefore the reset_postscu_n_o signal follows the reset_pmu_n_o signal That means the ɆC reset will be released and...

Page 29: ...F macro During startup the PMU enables the DCXO After the system is running the DCXO is controlled by the SCU of the baseband by using the vcxo_enable signal This is handled by a dedicated logic in the PMU see Figure 21 As long as rf_sysclk_en_pmu the output of the PMU state machine is high vcxo_enable controls the rf_sysclk_en signal to the RF If rf_sysclk_en_pmu is low the DXCO is switched off i...

Page 30: ...ignal That means all PMU register are reset in OFF state For details about the SW reset see chapter External Reset Handling 3 2 9 Undervoltage Shutdown In active mode the PMU periodically measures the battery voltage using the ADC from the charger unit If the battery is measured to be below the programmable shut down level called SYSOFF the system changes to OFF mode This is done via the SHUTDOWN ...

Page 31: ...DC converter SD1 can be configured to change the output voltage to a lower value for additional power saving VCXO_enable is also used to deactivate the HPBG and setting LDO LPMU in the ultra low power mode In addition the DCXO is switched off by the VCXO_enable signal The VCXO_enable signal is also used to switch some LDO s software configured to sleep and or off mode or to change the output volta...

Page 32: ...power variation into load mismatch Additionally a VBATT tracking feature is incorporated to maintain switching performance as supply voltage decreases 3 TECHNICAL BRIEF ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ Z VX 3 3 1 Internal Block Diagram 3 3 FEM with integrated Power Amplifier Module RF7161 U401 Figure 3 3 1 RF7161 FUNCTIONAL BLOCK DIAGRAM 3 3 2 General Description The RF7161 is a quad band GSM850 EGSM900 DCS18...

Page 33: ...T 0 L R T C P G 1 L R T C P G GND1 T T A B V GND2 GPCTRL2 RFIN_LB GND9 GND3 GND8 RFIN_HB ANT GND4 RX4 5 D N G 6 D N G 7 D N G 1 X R 2 X R RX3 L408 0 5p C451 22p C460 1n C453 4 7u 1n C454 L403 3 3n L404 3 3n FL402 869M894M 925M960MHz 10 5 6 3 7 2 9 4 8 1 IN_881_5 OUT_881_5 IN_942_5 OUT_942_5 GND1 GND2 GND3 GND4 GND5 GND6 C455 4 7u 33p C456 C457 33p 33p C458 C459 33p L405 1 5n L409 8 2n 33n L407 C46...

Page 34: ... curve some digital predistortion of the AFC word is required This predistortion is performed by the linearization unit for crystal oscillator LUXO The LUXO calculates the corresponding DIG value according to the given AFC value Figure 3 4 1 Crystal Oscillator External Connection The X GOLDTM213 RF Subsystem contains a fully integrated 26 MHz digitally controlled crystal oscillator designed for 8 ...

Page 35: ...ystem of PMB8810 U102 3 5 1 GENERAL DESCRIPTION The PMB8810 RF subsystem is designed for dual band GSM voice and data applications GPRS class 12 The system can be configured to support one low band GSM850 or EGSM900 and one high band DCS1800 or PCS1900 A block diagram of the RF subsystem is given in Figure 3 4 1 Figure 3 5 1 Block DIAGRAM of RF Subsystem 3 TECHNICAL BRIEF ...

Page 36: ...to achieve a matching without external high quality inductors By use of frequency dividers by 2 4 the LO frequency is derived from the RF frequency synthesizer The receive path is fully differential to suppress the on chip interferences and reduce DC offsets The analog chain of the receiver contains two LNAs low high band a quadrature mixer followed by an analog baseband filter and 14 bit continuo...

Page 37: ...ithout any external components Up and down ramping is performed via the ramping DAC connected to VRAMP RF synthesizer The RF subsystem contains a fractional N sigma delta synthesizer for the frequency synthesis Respective to the chosen band of operation the phase locked loop PLL operates at twice or forth of the target signal frequency In receive operation mode the divided output signal of the dig...

Page 38: ...uts FE1 FE2 for direct control of antenna switch modules enable to select RX and TX mode as well as low and high band operation An extra band select signal PABS for the power amplifier is used to support discrete PA and switching modules Time accurate power dissipation of the PA is achieved by the control signal PAEN A minor set of power amplifiers require a bias voltage to enhance power efficienc...

Page 39: ...3 TECHNICAL BRIEF 3 5 2 4 Power Supply To increase power efficiency most parts of the RF subsystem are supplied by the DCDC converter situated in the PMU subsystem Conversion of the 1 8 V output voltage of the DCDC to the 1 3 V 1 4 V circuit supply voltages is achieved by several Low DropOut regulators LDO One embedded direct to battery LDO provides the 2 5 V supply voltage for the remaining circu...

Page 40: ...rmance at low voltage on a 16 bit data bus The flash memory device has a multi partition architecture with read while program and read while erase capability The device supports synchronous burst reads up to 108 MHz using ADV and CLK address latching legacy latching on some litho density combinations and up to 133 MHz using CLK address latching only on some litho density combinations It is listed ...

Page 41: ...e ultra low power design In addition to voltage flexibility a dedicated VPP connection provides complete data protection when VPP is less than VPPLK A Status Register provides status and error conditions of erase and program operations One Time Programmable OTP registers allow unique flash device identification that can be used to increase flash content security Also the individual block lock feat...

Page 42: ...industry The BCM4329 utilizes advanced design techniques and process technologies to reduce active and idle power consumption and extend battery life while maintaining robust connectivity and providing a rich set of features The BCM4329 s highly sophisticated InConcert radio coexistence algorithms and hardware mechanisms allow for an extremely collaborative coexistence scheme and provide coexisten...

Page 43: ...reo analog input and output bidirectional I2S and PCM ports Increased battery life reduced in power consumption in all operating modes FM receiver and transmitter 76 MHz to 108 MHz FM bands Standards supported European Radio Data Systems RDS North American Radio Broadcast Data System RBDS Programmable FM transmit output power Supports two simultaneous Advanced Audio Distribution Profiles A2DP for ...

Page 44: ... Band Processor XMM2130 provides SIM Interface Module The XMM2130 checks status Periodically During established call mode whether SIM card is inserted or not but it doesn t check during deep sleep mode In order to communicate with SIM card 3 signals SIM_DATA SIM_CLK SIM_RST And This model supports 1 8 3V SIM Card 3 TECHNICAL BRIEF J301 9 8 10 7 6 3 5 2 4 1 C1 C5 C2 C6 C3 C7 GND1 GND4 GND2 GND3 ZD3...

Page 45: ...ixel is divided into Red Green and Blue sub pixels or dots which are arranged in vertical stripes The LS028Q3UW01 has been designed to apply the interface method that enables low power The LS028Q3UW01 is intended to support applications where thin thickness low power are critical factors and graphic display are important In combination with the vertical arrangement of the sub pixels the LS028Q3UW0...

Page 46: ...ed for backlight brightness control Users can easily configure up to 64 steps of LED current via the I2C interface control The RT9396 also comprises low noise low dropout regulators which provide up to 200mA of current for each of the four channels The four LDOs deliver 3 output accuracy and low dropout voltage of 200mV 200mA Users can easily configure LDO output voltage via the I2C interface cont...

Page 47: ...ite to the selected register Figure 2 shows the writing information for the four LDOs as well as for each LED current In the second word the sub address of the four LDOs is 001 and the sub address of the LED Driver for different dimming modes are respectively 010 011 and 100 For the LDO output voltage setting bits B1 to B4 represent each LDO channel respectively where a 1 indicates selected and a ...

Page 48: ...ff charging while continuously monitoring for input overvoltage and device over temperature The charge current and termination threshold are programming by simple one wire serial interfaces The charger status is indicated by two open drain outputs The AC adapter charger current is programming by external ISET1 resistor while USB charge current is programming either 90mA or 400mA through one wire i...

Page 49: ... in a maximum number of 72 keys to by identified by the Keypad Interface Controller The Keypad Scan Module reduces the number of interrupts and polling through the processor and therefore reduces the power consumption The module is able to debounce and scan the external keypad matrix automatically without any software intervention After debouncing it generates an interrupt The interface controller...

Page 50: ...LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 TECHNICAL BRIEF ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ YVX Figure 3 11 3 Block Diagram and System Integration of the KPD 3 TECHNICAL BRIEF ...

Page 51: ... subsequently It features a high quality stereo digital to analog path with amplifier stages for connecting acoustic transducers to X GOLD 213 In audio in path the supply voltage generation for electret microphones a low noise amplifier and analog to digital conversion are integrated in X GOLD 213 A more detailed functional description will be given in the following sections The audio front end it...

Page 52: ...be modified by certain control register settings Due to the new gain settings in the TX path the maximum input voltage is limited to 0 8 Vpp In both voiceband paths the value range for voice samples is confined to 97 5 i e to 31948 31947 or 8334H 7CCBH in X GOLD 213 On the TX path 83 1 s on the VTPDM line correspond to a 16 bit value of 7CCBH and 17 1 s correspond to a 16 bit value of 8334H at the...

Page 53: ...ion The DAC outputs can be switched to several output buffers In audio in section there is an input multiplexer which selects either one of two differential microphone inputs to be connected to the low noise amplifier and analog pre filter The signals from the analog pre filter are input to a second order sigma delta analog to digital converter In addition there is a connection for FM radio playin...

Page 54: ... can work unipolar mode where an AC coupling of the headset might be needed or can work also in bipolor mode The differential loudspeaker driver can be used to drive a 8 ȳ loudspeaker As it is a class D amplifier the needed suppression of the higher harmonics of the switching signals has to be achieved by the external circuitry The buffers are designed to be short circuit protected 3 TECHNICAL BRI...

Page 55: ... noise amplifier and following pre filter with gain control a second order ȭȟ converter and a digital decimation filter It supports both standard GSM bandwidth 3 5 kHz and wideband bandwidth 7 kHz speech bands The differential input signal from the microphone first passes a low noise amplifier and following pre filter and an anti aliasing pre filtering stage achieving and overall variable gain ran...

Page 56: ...ailable The supply VUMIC has a ultra low power mode where the current consumption is minimum whilst at the same time the noise performance is reduced For this purpose the VUMIC is directly supplied out of the VMIC regulator the Mic Buffer can be switched off and only the quiescent current of the VMIC regulator is present This mode can be used to supply a headset and allow accessory detection with ...

Page 57: ...ted YCbCr processing Scaling is used for downsizing the sensor data for either displaying them on the LCD or for generating data streams for MPEG 4 compression In general YCbCr 4 2 2 JPEG compressed images should use the full sensor resolution but they can also be downscaled to a lower resolution for smaller JPEG files Scaling also can be used for digital zoom effects because the scalers are capab...

Page 58: ... Continuous resize support Frame skip support for video e g MPEG 4 encoding Macro block line frame end capture error data loss interrupts and sync h_start v_start interrupts Programmable polarity for synchronization signals Luminance chrominance and chrominance blue red swapping for YUV input signals Maximum input resolution of 3 Mpixels 2048x1536 pixels Main scaler with pixel accurate up and down...

Page 59: ...rial interface under control of the host processor The touch controller is operated by two operating mode with selectable one is the single operating mode and another is the automation operating mode During operates as single operating mode control of the ISA2000 and its functions is accomplished by writing simple write and read commands of serial interface for getting the selected input ADC conve...

Page 60: ...limitation function Near rail to rail output swing under load ensures sufficient voltage drive for most ERM Eccentric Rotating Mass LRA Linear Resonant Actuator type actuators while the differential output drive allows the voltage polarity across the actuator to be reversed quickly Reversing the voltage gives the haptic motor driver the ability to drive an actuator both clock wise and counter cloc...

Page 61: ...04 4 3 2 1 ZD308 ZD309 1u C337 ZD306 TP310 TP309 10n C338 1V8_VDD 4 7K R313 DNI R314 DNI R315 VB301 2 1 C320 2 2u 0 1u C321 2 2u C322 1V8_VDD VBAT U301 19 5 5 1 14 13 7 6 17 4 3 2 18 9 8 16 10 1 1 1 12 VDN YP D N G PWM CLK HEN SCL VDDP XP XN YN VDD LEN SADD SDA GAIN VDP T A B V INTB PGND I2C_SCL I2C_SDA X X Y Y Y Y X X VIB_PWM VIB_EN TOUCH_EN TOUCH_INT TOUCH CONNECTOR Touch Haptic Driver Ckts ENZY...

Page 62: ...OTING 4 TROUBLE SHOOTING ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 64 147 4 1 RF Component 4 TROUBLE SHOOTING Figure 4 1 U101 Memory 1G NOR 256pSRAM PF38F6066M0Y3DE U102 Main Chip A GOLDRADIO PMB8810 XMM213 U404 GPRS QUAD TX MODULE RF7161 X102 Crystal 26MHz Clock DSX321G 26M 8PF SW401 RF Switch NMS 306 RF500 4 TROUBLE SHOOTING U102 U404 X102 U101 SW401 ...

Page 63: ... Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ VX 4 2 RX Trouble CHECKING FLOW 4 TROUBLE SHOOTING START Re download SW or Do calibration again HP8960 Test mode 62 CH 7 level setting TCH 62CH 60dBm setting BCCH Spectrum analyzer setting Oscilloscope setting 1 Check Crystal Circuit 2 Check Mobile SW TX module 3 Check PLL Control 4 TROUBLE SHOOTING ...

Page 64: ...UIT WAVEFORM CHECKING FLOW TP1 Figure 4 2 1 26 MHzO K No Crystal is OK See next page to check PLL Circuit Yes Replace X102 Figure 4 2 2 Figure 4 2 3 X102 TP1_1 pin 26MHz TP1 A11 B11 K12 K11 B2 A3 B3 A2 J8 USIF2_CTS_N USIF1_TXD_MTSR USIF1_RXD_MRST USIF1_RTS_N USIF1_CTS_N DPLUS DMINUS XOX XO 26MHz DSX321G 26M X102 2 1 3 4 BT_RXD BT_TXD USB_DP USB_DM UART_TX UART_RX NUB Close to the 26MHz XTAL Connec...

Page 65: ... A R V E L B A N E _ X T 0 L R T C P G 1 L R T C P G GND1 T T A B V GND2 GPCTRL2 RFIN_LB GND9 GND3 GND8 RFIN_HB ANT GND4 RX4 5 D N G 6 D N G 7 D N G 1 X R 2 X R RX3 L408 0 5p C451 22p C460 1n C453 4 7u 1n C454 L403 3 3n L404 3 3n FL402 869M894M 925M960MHz 10 5 6 3 7 2 9 4 8 1 IN_881_5 OUT_881_5 IN_942_5 OUT_942_5 GND1 GND2 GND3 GND4 GND5 GND6 C455 4 7u 33p C456 C457 33p 33p C458 C459 33p L405 1 5n...

Page 66: ...OUBLE SHOOTING ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ _VX CHECKING FLOW 4 TROUBLE SHOOTING Check TP1 of SW401 TP1 Signal is OK Replace Mobile SW SW401 Yes No Yes Mobile SW TX Module is OK Check PMB8810 U102 Control Signal is BS1 BS2 BS3 OK No Yes Check TP4 of U404 Replace TX Module U404 TP2 High Band TP3 Low Band Signal is OK No Yes EGSM Rx ...

Page 67: ...4 TROUBLE SHOOTING ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ VX 4 3 TX Trouble CHECKING FLOW 4 TROUBLE SHOOTING START Redownload SW or Do calibration again HP8960 Test mode 62 CH 7 level setting TCH 62CH 60dBm setting BCCH Spectrum analyzer setting Oscilloscope setting 1 Check Crystal Circuit 2 Check Mobile SW TX Module 3 Check PLL Control ...

Page 68: ...UIT WAVEFORM CHECKING FLOW Figure 4 3 1 26 MHzO K No Crystal is OK See next page to check PLL Circuit Yes Replace X102 Figure 4 3 2 Figure 4 3 3 TP1 X102 TP1_1 pin 26MHz TP1 A11 B11 K12 K11 B2 A3 B3 A2 J8 USIF2_CTS_N USIF1_TXD_MTSR USIF1_RXD_MRST USIF1_RTS_N USIF1_CTS_N DPLUS DMINUS XOX XO 26MHz DSX321G 26M X102 2 1 3 4 BT_RXD BT_TXD USB_DP USB_DM UART_TX UART_RX NUB Close to the 26MHz XTAL Connec...

Page 69: ...M A R V E L B A N E _ X T 0 L R T C P G 1 L R T C P G GND1 T T A B V GND2 GPCTRL2 RFIN_LB GND9 GND3 GND8 RFIN_HB ANT GND4 RX4 5 D N G 6 D N G 7 D N G 1 X R 2 X R RX3 L408 0 5p C451 22p C460 1n C453 4 7u 1n C454 L403 3 3n L404 3 3n FL402 869M894M 925M960MHz 10 5 6 3 7 2 9 4 8 1 IN_881_5 OUT_881_5 IN_942_5 OUT_942_5 GND1 GND2 GND3 GND4 GND5 GND6 C455 4 7u 33p C456 C457 33p 33p C458 C459 33p L405 1 5...

Page 70: ...ΣΟΒΝ ΆΤΖ ΟΝΪ YVX CHECKING FLOW 4 TROUBLE SHOOTING Check TP2 TP3 Mobile SW TX Module is OK Yes TP5 signal same as TP1 Replace SW401 No Yes Replace PMB8810 U102 TP2 High Band TP3 Low Band Signal is OK No Yes Check PMB8810 U102 Control Signal is VLogic TX EN BS1 BS2 OK No Yes Yes Check TP4 of U404 TP1 Signal is OK Replace TX Module U404 No EGSM Tx ...

Page 71: ...Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ ZVX 4 4 Power On Trouble 4 TROUBLE SHOOTING Figure 4 1 TEST POINT VPMU VDDTRX VCORE VMMC VAUX VDDMS VDDXO VDDTDC VDD_VRF2 U102 VRF1 ...

Page 72: ... R 7 T 6 T 7 P 1 D S _ D D V B F _ 1 D S 1 D S _ S S V W S _ 1 D S S M S S V P S T A B V U M P _ T A B V 1 O I D D V 2 O I D D V U B E _ D D V U M P V U M P _ S S V 1 E R O C _ S S V 2 E R O C _ S S V 3 E R O C _ S S V E R O C V E R O C D D V P C 8 V 1 D D V R S L S S V X R T S S V X R S S V 1 8 V 1 D D V P M A R V G I D _ S S V S M D D V O X D D V C D T D D V D M M D D V G E N D D V T A B V O C D...

Page 73: ...And check the level change into high of POWERKEY Check the voltage of The LDO outputs at U102 Is the phone power on The phone will Properly operating Charge or Change Battery Check the contact of power key Or dome switch Replace U102 VCORE 1 2V VPMU 1 2V VDDMS 1 3V VAUX 2 85V VMMC 2 85V VDD_RF2 2 5V VDDXO 1 3V VDDTDC 1 3V VRF1 1 8V Does it work properly Replace the main board YES YES YES YES NO NO...

Page 74: ...ure 4 5 4 TROUBLE SHOOTING U201 1 pin TP01 CN205 1 pin connected to TP01 Connected to CN205 1 pin TP01 TP01 0 1u C255 U201 6 5 7 4 8 3 9 2 10 1 11 PGND VIN BATT ISET PGB GND1 CHGSB LDO GND2 IEOC EN_SET 1V8_VDD C223 1u 0 1u C224 VBUS_USB 1u C225 VBAT 100K R211 R227 1 2K 3 9K R228 CHG_EN LDO_OUT _EOC Ichg 530 Riset 481 8mA Ieoc Rieoc 200 19 5 93 95mA 25V 10V CHARGING IC TP01 Connected to CN205 1 pin...

Page 75: ...HECKING FLOW 4 TROUBLE SHOOTING START Is I O Connector CN201 well soldered Check the voltage at TP01 Charging IC U201 5 1V YES YES Battery is charged YES Charging is properly operating NO NO NO Resolder the CN201 Pin 1 VBUS_USB The TA is out of order Change the TA Replace the main board Battery is charged NO Change the battery Charging is properly operating YES ...

Page 76: ...tronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ _VX 4 TROUBLE SHOOTING 4 6 Vibrator Trouble TEST POINT Figure 4 6 Vibrator PAD VB301 U301 TP310 ...

Page 77: ..._ M A C K L C P _ M A C C N Y S V _ M A C K L C M _ M A C T N I _ B B D _ T B T N I _ C I U M S C _ I P S T C E T E D _ K O O H T O O B _ F 2 L O C _ Y E K 3 L O C _ Y E K M W P _ B I V 0 T N I E 6 T N I E O I 3 C C 1 C C 6 2 1 R K 2 2 K 0 0 1 5 2 1 R 7 2 1 R K 0 0 1 8 2 1 R K 0 0 1 9 2 1 R K 0 0 1 U103 6 5 7 8 4 2 1 3 OUT1 IN OUT2 EN_SET OUT3 OUT4 GND OUT5 1V8_VDD 1u C145 FM_LNA_EN IO_EXPANDER1 L...

Page 78: ...ΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ _WVX 4 TROUBLE SHOOTING CHECKING FLOW SETTING Enter the engineering mode and set vibrator on at vibration of BB test menu START YES NO Replace vibrator YES Vibrator Working well Check the soldering of vibrator Resolder the Pad YES Replace U302 NO Is the voltage at VB301 high Check the TP310 Is PWM Signal OK Replace U102 NO YES ...

Page 79: ...purposes 4 TROUBLE SHOOTING ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ _XVX 4 7 LCD Trouble TEST POINT Figure 4 7 U302 FL301 LCD DATA 0 3 FL303 LCD DATA 4 7 CN303 MLED1 5 TP01 05 TP07 LCD BL CTRL 0 1 2 3 4 5 6 7 1 2 3 4 5 4 TROUBLE SHOOTING TP06 LCD RESET TP305 LCD DATA0 TP301 LCD RS TP302 nLCD MAIN RS TP303 nLCD WR TP304 LCD VSYNC ...

Page 80: ..._B4 1 G 2 G FL303 15pF 0 1 5 6 4 7 3 8 2 9 1 INOUT_A1 INOUT_B1 INOUT_A2 INOUT_B2 INOUT_A3 INOUT_B3 INOUT_A4 INOUT_B4 1 G 2 G 1V8_VDD TP307 VA301 VBAT VMMC 1u C313 C323 1u LCD_RS NLCD_MAIN_CS LCD_DATA00 LCD_DATA01 LCD_DATA02 LCD_DATA03 LCD_DATA04 LCD_DATA05 LCD_DATA06 LCD_DATA07 LCD_VSYNC NLCD_WR LCD_ID MLED1 MLED3 MLED2 MLED4 MLED5 LED_PWM IF_MODE IF_MODE LCD_RESET Maker IF Maker ID SHARP L L LCD ...

Page 81: ...nics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ _ZVX 4 TROUBLE SHOOTING Waveform Graph 4 7 1 LCD Backlight Control Signal Waveform Graph 4 7 2 LCD Data Waveform LCD_BL_CTRL LCD_RS LCD_CS LCD_WR ...

Page 82: ...START Is the connection of CN303 with LCD connector ok YES NO NO Check the Voltage Level of MLED1 TP01 05 are about Battery voltage LCD BL Ctrl TP07 signal is high Level NO YES YES Check the Waveform of EMI filter FL301 FL303 TP301 TP304 NO Does LCD work properly Reassemble LCD connector Resoldering or Replace U302 Resoldering EMI filter FL301 FL302 FL303 Replace LCD module LCD working well YES ...

Page 83: ...training and service purposes 4 TROUBLE SHOOTING ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ _ VX 4 TROUBLE SHOOTING 4 8 Camera Trouble TEST POINT Figure 4 8 U302 CN305 Camera TP04 C331 TP05 C310 TP06 C309 TP01 C336 TP02 C328 TP03 C335 CAM_DATA 3 7 CAM_DATA 0 2 3 4 5 6 7 2 1 0 U102 TP07 R123 TP08 R124 TP09 R302 ...

Page 84: ...302 51 R303 22 0 1u C310 100K R304 CAM_A_2V8 CAM_D_1V8 CAM_IO_1V8 C311 DNI C312 DNI CAM_DATA0 CAM_DATA1 CAM_DATA2 CAM_DATA3 CAM_DATA4 CAM_DATA5 CAM_DATA6 CAM_DATA7 CAM_HSYNC CAM_PCLK CAM_VSYNC CAM_MCLK CAM_STANDBY I2C_SCL I2C_SDA CAM_RESET CAMERA INTERFACE 9 R 5 A 5 B 8 C 0 A W _ 1 S 2 I L C S _ C 2 I A D S _ C 2 I F F O N O 2 2K R123 R124 2 2K 1V8_VDD I2C_SCL I2C_SDA S T C _ T B PWRON C329 1u 2 2...

Page 85: ...urposes 4 TROUBLE SHOOTING ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ _ VX 4 TROUBLE SHOOTING Waveform Graph 4 8 1 I2C Data Waveform Graph 4 8 3 CAM_VSYNC vs CAM_HSYNC Waveform Graph 4 8 2 MCLK Waveform Graph 4 8 4 CAM_HSYNC vs CAM_PCLK Waveform I2C_DATA CAM_RESET CAM_MCLK CAM_MCLK 26MHz CAM_VSYNC CAM_HSYNC 26MHz CAM_HSYNC CAM_PCLK ...

Page 86: ...nd TP05 TP06 1 8V is right LED_PWM signal is high Level Does Camera work properly Check the Waveform of I2C_CLK TP07 I2C_DATA TP08 CAM_MCLK 26MHz Check the Waveform of Camera socket pin Check the Waveform of Data pins on CN305 START Camera working well NO Reassemble camera connector with camera NO YES YES Resoldering or Replace U302 NO Replace U102 or Change the board YES YES YES YES NO Replace U1...

Page 87: ...tronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING TP06 FB209 TP05 FB208 CN203 Speaker contact 4 9 Speaker Receiver Trouble 2 TROUBLE SHOOTING TEST POINT U202 TP03 C 247 TP04 C248 TP02 C213 TP01 C212 U102 BB chip ...

Page 88: ... 0 1u C210 2 2u C211 2 2u C212 1u C213 1u C214 47p C215 47p C216 0 1u C217 0 1u C218 2 2u C219 2 2u R201 20 20 R204 C222 2 2u 0 R205 VBAT C245 1u C246 1u C247 1u C248 1u I2C_SCL I2C_SDA EPN EPP HP_LOUT HP_ROUT RCV_SPK_N RCV_SPK_P HSL HSR EAR_GND AUDIO AMP SUB SYSTEM SIGNAL DISTRIBUTOR TP01 N15 N16 T14 R14 M16 M15 K15 T2 P9 J6 R3 M3 K4 CS0_N CS1_N ADV_N WAIT_N ANAMON BFCLK0 FSYS_EN EPN EPP HSL HSR ...

Page 89: ...the state of contact of speaker Speaker Working well Check the Audio signal C212 C213 C247 C248 TP01 04 No Yes Change the U102 Replace Change speaker No Check the Audio signal FB208 FB209 TP05 06 No Replace Change the U202 Yes Yes START Mp3 Check the state of contact of speaker Speaker Working well Yes Check the Audio signal FB208 FB209 TP05 06 Yes Yes No No No Check the Audio signal C212 C213 C24...

Page 90: ... for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING YVX 4 10 Earphone Trouble TEST POINT 2 TROUBLE SHOOTING U202 TP01 C245 TP02 C246 U102 BB chip TP03 FB211 TP04 FB204 L204 L203 3 5Ɋ Ear Mic Connector Headset MIC Resoldering points U U U U ...

Page 91: ...0 R240 VHSMIC s m h o K 5 1 8 1 2 R DNI C244 0 0 8 1 3 0 2 B F 0 2 2 R s m h o K 0 2 2 1 2 2 R s m h o M 1 120pF C236 L201 0 1uH FB204 1800 47ohms R222 L202 0 1uH 1V8_VDD R223 DNI VA204 0 1uH L203 VAUX 10pF C240 R226 2 2Kohms 560pF C241 C242 560pF VA205 L204 0 1uH VA206 DNI C237 6 5 2 C 0 022uF HOOK_DETECT HS_MIC_N HP_LOUT HP_ROUT JACK_DETECT HS_MIC_P EAR_GND EAR_GND FM_ANT 3 5phi HEADSET 1V8_VDD ...

Page 92: ...f the test Equipment to echo mode Change the earphone and try again NO Can you hear the sound from the earphone Set the audio part of the test equipment to PRBS or Continuous wave mode YES YES Resolder J201 NO YES Can you hear the sound from the earphone NO Change the earphone and try again NO Can you hear your voice From the earphone NO Resolder L203 L204 FB204 FB205 C245 C246 Resolder FB203 R226...

Page 93: ...C114 U UU U U TP01 TP02 TP03 TP04 TP05 TP06 1n C107 C110 220n 47p C113 C115 47p C117 47p VMIC T1 A1 T16 A16 T10 P11 R10 P13 P12 T13 R13 T12 R12 MICN1 MICP1 MICN2 MICP2 VMIC VUMIC ACD AGND VREF VSSRF2 NC2 VSSCORE4 NC4 1n C132 C114 47p VHSMIC HS_MIC_N JACK_DETECT MIC_P HS_MIC_P MIC_N TP01 TP04 2 4 2 R I N D 5 0 2 L n 0 0 1 VA209 C260 39p C252 39p C261 39p VA215 C148 0 1u 0 1u C147 VA208 10u C253 C25...

Page 94: ...00 DCS mode or GSM850 PCS mode CHECKING FLOW START NO YES Microphone will work properly YES Check the signal Level at each side of MIC201 Is it a few tens mV AC Check the soldering of C147 C148 TP06 05 Make a phone call then check L205 TP02 mic bias comes from U102 NO Change the microphone YES NO Re solder component 1 Check mic Bias signal line 2 Change the U102 Check microphone sound hole 2 TROUB...

Page 95: ...2V85_VSIM K5 G5 H6 H2 H3 H1 G4 G2 G3 M8 VSIM CC_IO CC_CLK CC_RST MMCI_CMD MMCI_DAT_0 MMCI_CLK MMCI_DAT_1 MMCI_DAT_2 MMCI_DAT_3 0 1u C131 USD_CLK USD_CMD USD_D1 USD_D2 USD_D3 USD_D0 SIM_DATA SIM_CLK SIM_RST TP01 TP04 J301 9 8 10 7 6 3 5 2 4 1 C1 C5 C2 C6 C3 C7 GND1 GND4 GND2 GND3 ZD301 ZD302 R309 4 7K 2V85_VSIM 2V85_VSIM 0 1u C315 DNI C316 22p C317 ZD303 22p C318 SIM_DATA SIM_CLK SIM_RST These are ...

Page 96: ...SIM card support 3V or 1 8V NO Change the SIM Card This phone supports 3V or 1 8V SIM card YES Is Voltage at the pin 1 of J301 2 85V or 1 8V NO Change the U102 NO YES Resolder J301 YES Voltage output of VSIM LDO TP01 Is 2 85V Change the SIM Card And try again Does it work Properly YES SIM card is properly working redownload SW Does it work Properly NO Change the main board NO YES SIM card is prope...

Page 97: ... S201 TP01 C250 TP02 R236 Figure 4 14 CIRCUIT U U U U R231 uSD D2 R232 uSD D3 TP03 C249 R235 uSD D1 R234 uSD D0 U U UTP01 TP02 TP03 S201 GND DAT2 CD_DAT3 CMD VDD CLK VSS CARD_DETECT DAT0 COVER_DETECT1 DAT1 R229 47ohms VMMC FB206 600 47K R230 47K R231 R232 47K R233 47K R234 47K 47K R235 DNI C249 C250 2 2uF 1V8_VDD 100Kohms R236 C251 0 001uF USD_DET USD_CLK USD_CMD USD_D1 USD_D2 USD_D3 USD_D0 u SD C...

Page 98: ...BLE SHOOTING ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XWWVX 4 TROUBLE SHOOTING CHECKING FLOW Micro SD Card will work properly Micro SD Detect OK START Re attach or Replace S201 NO YES uSD_DET R236 TP02 Is High NO YES Check out MC_CLK Data Timing TP03 OK Re download SW NO YES YES Replace Micro SD Card Check the C250 TP01 2 8V YES NO Change U102 ...

Page 99: ...raining and service purposes 4 TROUBLE SHOOTING ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XWWVX _ 4 TROUBLE SHOOTING 4 14 Bluetooth Trouble Check point ཛ Clock Check point ཛྷ POWER Setup Test Equipment START Check point ཝ Module Component Change END Checking Flow Figure 4 14 WI FI BT Module Checking Points ཛ ཛྷ ཝ ...

Page 100: ...Clock Circuit TP2 26MHz C483 TP1 CLK_REQ R404 Figure 4 16 1 WI FI BT Clock part Check TCXO No Yes Check Module Part TP1 2 is OK START TP1 CLK_REQ TP2 26MHz Checking Flow 4 14 1 Checking Main Clock part 4 TROUBLE SHOOTING 26MHz TG 5010LH 87N X401 4 2 3 1 NC OUT GND VCC C419 1u VDD_TCXO U402 5 3 2 4 1 VOUT VDD GND CE D N G P R404 100K 1u C418 C417 1u VBAT VDD_TCXO CLK_REQ XTALP WiFi TCXO TCXO LDO TP...

Page 101: ... S 7 D N G 6 C N GND9 NC5 GND2 OSC_OUT GND11 3 1 D N G 2G4_ANT GND14 OSC_IN BT_WAKE_B GND15 BT_HOST_WAKE_B NC7 NC4 NC3 NC2 NC1 NC8 NC9 SEL_SPI SDIO GND8 BT_ENABLE VBAT2 WL_ENABLE VBAT1 WL_HOST_WAKE_N GND3 WL_WAKE_N SR_VLX1 SDIO_CMD SPI_DI SR_AVDD_2P5 GND10 T U O _ M C P _ T B A P _ D D V SDIO_D3 SPI_CS SDIO_D2 GND12 Q R I _ I P S 1 D _ O I D S O D _ I P S 0 D _ O I D S K L C _ I P S K L C _ O I D ...

Page 102: ... for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XWZVX 4 TROUBLE SHOOTING 4 15 FM Radio Trouble TEST POINT Figure 4 17 TP3_C239 TP1_L201 TP2_C237 J201 CN201 U203 TP6_C228 TP7_C234 TP8_R212 TP4_L417 TP5_L401 Q401 Q402 ...

Page 103: ...1 R203 R209 2 2K C228 0 1u 2 2K R212 VBUS_USB C229 2 2u DNI R214 2 2u C230 1000 FB202 U203 B5 C5 2 B 1 C 2 C C3 A2 C4 D3 D1 D4 A1 B1 A3 B4 B3 A5 A4 D5 D2 BAT VB DN1 DP2 U1 UID U2 RES MIC AUD1 CAP AUD2 GND ISET IC L C S A D S T N I COMN1 COMP2 C231 1 5n 1V8_VDD VBAT 0 1u C234 R216 1 1 R217 MUIC_INT I2C_SCL I2C_SDA USB_DP USB_DM UART_TX UART_RX MUIC_ID MUIC_DM MUIC_DP MUIC 25V 10V 6 0 4 R n 0 7 2 AN...

Page 104: ...tching components TP1 TP2 TP3 A condition is good NO YES Give the additory solder in TP1 TP2 TP3 Replace J201 Check Bias Voltage VDD_FMR C124 YES NO Replace U102 START Check of earless condition Check condition of CN201 connection YES A condition is good YES NO Replace CN201 NO Replace U203 A condition is good Check Bias Voltage MUIC U203 TP6 TP7 TP8 Check Input output signal at MUIC YES NO Replac...

Page 105: ... right reserved Only for training and service purposes 4 TROUBLE SHOOTING ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XW VX 2 TROUBLE SHOOTING 4 16 Touch trouble TEST POINT U301 TP01 C320 TP02 C322 U U CN304 TP07 ZD308 TP08 ZD309 TP06 ZD307 TP05 ZD306 U U U U U102 TP03 R123 U U TP04 R124 ...

Page 106: ...TP3 9 R 5 A 5 B 8 C 0 A W _ 1 S 2 I L C S _ C 2 I A D S _ C 2 I F F O N O 2 2K R123 R124 2 2K 1V8_VDD I2C_SCL I2C_SDA S T C _ T B PWRON 1u C337 TP310 TP309 10n C338 1V8_VDD 4 7K R313 DNI R314 DNI R315 VB301 2 1 C320 2 2u 0 1u C321 2 2u C322 1V8_VDD VBAT U301 19 5 5 1 14 13 7 6 17 4 3 2 18 9 8 16 10 1 1 1 12 VDN YP D N G PWM CLK HEN SCL VDDP XP XN YN VDD LEN SADD SDA GAIN VDP T A B V INTB PGND I2C_...

Page 107: ...BLE SHOOTING CHECKING FLOW Yes Yes Yes No No Check CN304 and touch pannel contact Check touch signal ZD306 309 TP05 08 Resolder or Replace U301 Contact well CN304 and touch pannel Check supply voltage of U301 C322 C320 TP01 02 Touch will work properly START Yes Resolder or Replace U102 Check I2C signal of U102 R123 R124 TP03 04 Resolder CN304 or replace touch pannal Yes ...

Page 108: ...0 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 5 DOWNLOAD 5 DOWNLOAD k G GaG㜼 Onzt s pG GZUWP XUj G G GGaG㜼 iyh psGO tnP YUGzV G 㾡 aG㜼 OGw 㾡ㇵḴ㛺㢀UGP LG T310i LG T310i ...

Page 109: ... 110 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 5 DOWNLOAD kss 㾡 a 㜼 On Y_W kssP kssG 㾡 aG㜼 On Y_W UkssP LG T310i LG T310i LG T310i ...

Page 117: ... LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 5 DOWNLOAD LG T310i LG T310i LG T310i LG T310i LG T310i LG T310i LG T310i LG T310i LG T310i ...

Page 118: ... 119 Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 5 DOWNLOAD LG T310i LG T310i LG T310i LG T310i LG T310i LG T310i ...

Page 121: ... ɻ Headset BAT Li Ion 900mAh BAT Li Ion 900mAh SIM Card BaseBand PMB8810 AGoldRadio Memory 1G NOR 256M pSRAM ANT Camera 2M FF LCD Interface µSD Card SAW Filter PAM Vibrator Charging IC LCD Backlight Charge Pump LDO 2 8V 1 5V 2 8V 2 8V MMCI LCD Backlight Bluetooth Module BT ANT UART PCM Control Signals I2C Camera Interface Camera Power Front key Side Key VCHG VBUS MUIC Audio AMP I2C Headset Call MP...

Page 122: ...07 TP109 TP110 C139 10u OJ102 C141 DNI CN101 9 8 7 6 5 4 3 2 1 R138 DNI 100K R110 1V8_VDD 47p C142 VRF1 C143 47p DNI C144 R112 100K C114 47p R150 0 VHSMIC 2 2K R123 R124 2 2K 1V8_VDD 32 768KHz NX3215SA X101 2 1 R111 56K K 0 0 1 5 2 1 R 26MHz DSX321G 26M X102 2 1 3 4 7 2 1 R K 0 0 1 8 2 1 R K 0 0 1 9 2 1 R K 0 0 1 U103 6 5 7 8 4 2 1 3 OUT1 IN OUT2 EN_SET OUT3 OUT4 GND OUT5 DNI R137 1V8_VDD 1u C145 ...

Page 123: ...1V8_VDD 0 1u C226 C227 39p VBAT 100K R211 C228 0 1u 2 2K R212 10 R213 VBUS_USB VBAT C229 2 2u DNI R214 VBAT 2 2u C230 1000 FB202 U203 B5 C5 2 B 1 C 2 C C3 A2 C4 D3 D1 D4 A1 B1 A3 B4 B3 A5 A4 D5 D2 BAT VB DN1 DP2 U1 UID U2 RES MIC AUD1 CAP AUD2 GND ISET IC L C S A D S T N I COMN1 COMP2 C231 1 5n 1V8_VDD 10u C233 U204 4 3 2 5 1 IN VCC GND IN OUT VBAT 0 R240 0 1u C234 R216 1 1 R217 VHSMIC s m h o K 5...

Page 124: ...NOUT_B2 INOUT_A3 INOUT_B3 INOUT_A4 INOUT_B4 1 G 2 G 1V8_VDD TP307 VA301 VBAT VMMC 1u C313 D306 ZD301 ZD302 R309 4 7K 2V85_VSIM 2V85_VSIM 0 1u C315 DNI C316 22p C317 ZD303 22p C318 CAM_IO_1V8 CAM_D_1V8 CAM_A_2V8 1V8_VDD 4 7K R313 DNI R314 DNI R315 VB301 2 1 C320 2 2u 0 1u C321 2 2u C322 1V8_VDD VBAT C323 1u U301 19 5 5 1 14 13 7 6 17 4 3 2 18 9 8 16 10 1 1 1 12 VDN YP D N G PWM CLK HEN SCL VDDP XP ...

Page 125: ... R424 C489 330p 330p C432 R409 270ohms 4 7K R408 470n C428 470n C431 L417 22n R423 24K C427 DNI 5 1ohms R421 1u C488 Q402 2 1 3 ZD401 DNI_DIODE_1006 C450 56p U404 12 1 1 0 1 9 8 7 13 6 14 5 15 4 16 3 17 2 8 1 1 9 1 0 2 1 2 2 2 3 2 G U L S _ D N G P M A R V E L B A N E _ X T 0 L R T C P G 1 L R T C P G GND1 T T A B V GND2 GPCTRL2 RFIN_LB GND9 GND3 GND8 RFIN_HB ANT GND4 RX4 5 D N G 6 D N G 7 D N G 1...

Page 126: ...c All right reserved Only for training and service purposes LGE Internal Use Only 8 BGA PIN MAP 8 BGA PIN MAP ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XYYVX 8 4 BGA PIN MAP Top View BGA IC pin check U102 ؼ Ball Diagram Top View PMB8810 A GOLDRADIO not in use ...

Page 127: ...al Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 8 BGA PIN MAP ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XYZVX BGA IC pin check U101 ؼ Ball Diagram Top View PF38F5060M0Y3DF not in use ...

Page 128: ...rvice purposes R221 R222 U204 9 3 2 R 3 0 2 C 1 0 1 N C ZD306 ZD309 ZD307 ZD308 CN304 KB302 KB303 1 4 2 R 8 1 2 R 6 3 2 C C240 C241 8 3 2 C 2 4 2 C C256 R226 KB301 0 2 2 R R249 FB203 VA203 LG T310i MAIN SPFY0230301 1 0 TOP CON304 Touch screen connector no touch screen U204 Hook key detect no headset Hook key operation ...

Page 129: ...28 C127 0 3 1 C VA209 5 0 2 L C254 2 4 2 R MIC 201 3 2 2 C R304 R211 C225 TP109 1 0 1 T A B 3 0 4 L 2 6 4 C 3 0 4 L F CN305 4 2 2 C 1 0 2 U 7 2 2 R C109 L405 L409 2 0 4 L F L406 0 1 4 L 7 0 4 L 8 0 4 L C452 2 0 4 L C460 4 1 4 R GND403 6 0 3 C 9 0 3 C 5 5 2 C 1 0 3 J TP110 TP107 4 0 3 D 5 0 3 D 7 0 3 C 1 3 3 C 0 1 3 C 8 0 3 C 5 2 3 R 4 2 3 R L416 C451 4 0 4 U 3 2 4 C C424 1 2 4 C ANT403 C326 C330 C...

Page 130: ...nfo 1 1 1 BattInfo 1 2 Bluetooth Test 1 2 1 Enter Test Mode 1 2 2 OnOff Test 1 2 3 Headset Test 1 2 4 BT Test1 1 2 5 BT Test2 1 2 6 Xhtml Compose Print 1 2 7 Xhtml Print Test 3 3 Layer1 Info 4 Call Timer 3 Eng Mode 6 MF TEST 5 Factory Reset 2 Model Version 3 1 Cell environ 3 2 1 Mobility 3 2 2 RadioRes 3 2 1 Gprs 6 2 1 BacklightOn 6 2 2 BacklightOff 6 3 1 Audio Test 2 1 Version 3 2 PS Layer Info 3...

Page 131: ...11 1 Introduction This manual explains how to examine the status of RX and TX of the model A Tx Test TX test this is to see if the transmitter of the phones is activating normally B Rx Test RX test this is to see if the receiver of the phones is activating normally 11 2 Setting Method 10 STAND ALONE TEST 1 Set COM Port 2 Check PC Bau Rate 3 Confirm EEPROM Delta file prefix name ྙ ԙ Ԛ ...

Page 132: ...ectronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 11 STAND ALONE TEST XY VX 10 STAND ALONE TEST Not Connected ԛ Connected 4 Click Update Info for communicating Phone and Test Program ...

Page 133: ...for training and service purposes 11 STAND ALONE TEST XY VX 10 STAND ALONE TEST ԝ Ԝ Change ptest mood 5 For the purpose of the Standalone Test Change the Phone to ptest mode and then Click the Reset bar 6 Select Non signaling in the Quick Bar menu Then Standalone Test setup is finished ...

Page 134: ...ternal Use Only 11 STAND ALONE TEST XY_VX 1 Non signaling mode bar and then confirm OK text in the command line 2 Put the number of TX Channel in the ARFCN 3 Select Tx in the RF mode menu and PCL in the PA Level menu 4 Finally Click Write All bar and try the efficiency test of Phone 11 3 Tx Test Ԙ ԙ Ԛ ԛ ...

Page 135: ...ST XY VX 10 STAND ALONE TEST 11 4 Rx Test 1 Put the number of RX Channel in the ARFCN 2 Select Rx in the RF mode menu 3 Finally Click Write All bar and try the efficiency test of Phone 4 The Phone must be changed normal mode after finishing Test 5 Change the Phone to normal mode and then Click the Reset bar ԙ Ԙ Ԛ ԛ Ԝ Change normal mode ...

Page 136: ...M phone 12 AUTO CALIBRATION 11 AUTO CALIBRATION 12 2 Configuration of HotKimchi CM_GSM_MULTI Common Debug dll ocx Hot_Kimchi Model UI Multi_HK LG_UI_Ad6500_004 dll LG T310 Spec_LGT310_001 dwdio dll LG_RfCal_InfiKE000Ag_177 dll LG_RfTest_E5515C_122 dll xmm2130_eep008 cfg AutoSetup_LGT310_001 Ezlooks Procedure_LGT310_001 PwrSupply_Cmd script_001 Setup_Cal_Parameter_001 PwrSupply_Cmd DLL_PwrControlD ...

Page 137: ...0 exe Execute File HK_XX Æ XX is File Version ComLMPLib_1_11 dll Communication Module With PLC or Shield Box In Automation Rack Support to J S Shield Box and Tescom TC 5981A ComLMPLib_2_11 dll Communication Module With PLC or Shield Box In Automation Rack Support to J S Shield Box and Tescom TC 5981A Dll_EzLooksMQ_005 dll Communication Module with ezTray Installed In Local PC GuiTk115d dll control...

Page 138: ...y if the Remote ON is used 1st ON state 1 Copy the file to C Cm_Gsm_Multi 2 Copy the files of Windows XXX MFCD DLL vsflex7l_ocx_regist to C Cm_Gsm_Multi dll ocx 3 Select MFCD DLL of your computer OS 4 Click on vsflex7l_ocx_regist 5 Click on Multi_HK reg 6 Connect as Fig 11 2 RS232 serial cable is connected between COM port of PC in general 7 Run HK_40exe to start calibration 8 Click Logic Operatio...

Page 139: ...ll right reserved Only for training and service purposes 12 AUTO CALIBRATION XZZVX 9 Set PORT using RS232 cable that PC can communicate with the phone 11 AUTO CALIBRATION 10 Select LOGIC MODE that you want Logic mode 1 Calibration only 2 Auto test only 3 Cal Auto ...

Page 140: ...ics Inc All right reserved Only for training and service purposes LGE Internal Use Only 12 AUTO CALIBRATION XZ VX 11 AUTO CALIBRATION 11 Select the model name T310 12 Click start button Model name Start button T310i LG T310i LG T310i ...

Page 141: ...ation In this procedure you can get proper scale factor value and measured power level 12 7 ADC This procedure is for battery calibration You can get main Battery Config Table and temperature Config Table will be reset 12 8 Target Power 29 3 dBm 29 3 dBm 29 3 dBm Max power 1909 8 MHz 1880 MHz 1850 2 MHz Frequency 810 661 512 Channel PCS 1900 30 dBm 30 dBm 30 dBm Max power 1784 8 MHz 1747 6 MHz 171...

Page 142: ...nternal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ACGK00 SAFY00 ACGM00 MWAC00 MTAD00 ACGK00 AKAC00 SVLM00 SNGF02 SNGF01 SPKY00 SNGF00 MCBA01 SJMY00 SVCY00 MCBA00 GMEY00 MCJA00 SBPL00 SUSY00 ADCA00 SUMY00 ACFA00 ...

Page 144: ...Color 2 MPCY Pallet MPCY0021701 COMPLEXKC910AUSTNZZ WithoutColor 1 APEY PhoneAssembly APEY0914109ත6 LG T310iTFHBKBK Black 2 ACGY CoverAssembly EMS ACGY0092108ත4 LG T310iTFHBKBK Black 3 ACGM CoverAssembly Rear ACGM0161302ත16 LG T310VIVBKRD Red 4 ACFA ContactAssembly SideButton ACFA0000302 i CommonZZZBKZZ WithoutColor2ButtonType 4 MBJZ Button MBJZ0033802 COMPLEXLG T310VIVBKRD RedMOLD PCLUPOYSC 1004A...

Page 145: ...r MFBZ0019201 COMPLEXLG T310VIVBKZZ WithoutColor 5 MFEZ00 Frame MFEZ0031101 COMPLEXLG T310VIVBKZZ WithoutColor 5 MGAZ00 Gasket MGAZ0104601 COMPLEXLG T310VIVBKGD GoldCOMPLEX empty 5 MPBG00 Damper LCD MPBG0110101 COMPLEXLG T310VIVBKZZ WithoutColor 5 MTAA00 Tape Decor MTAA0223501 COMPLEXLG T310VIVBKZZ WithoutColor 5 MTAB00 Tape Protect MTAB0401301 COMPLEXLG T310VIVBKZZ WithoutColor 5 MTAD00 Tape Wind...

Page 146: ...lical SNGF0061501 712789 0001SINGLE 5DB50OHM3LAIRDTECHNOLOGIESKOREA 4 SVLM00 LCDModule SVLM0040001 LS028Q3UW01Main 2 8 QVGA 47 4x70 21x1 9t 262K T FT TM NT35751 SHARPCORPORATION 3 SAFY00 PCBAssembly Main SAFY0401001 LG T310iTFHBKMAIN A 2 SMZY00 IC MemoryCard MICROSD SMZY0017802 SDSDQ 2048 974SDSDQ 2048 974 2GB MICROSD MLC1DIESANDISKCORPORATIO N 2 SMZY00 IC MemoryCard MINISD S SMZY0027202 SD C02G2C...

Page 147: ...18001 LG0029LG0029MicroUSB 0 8Mningbobroadtelecommuni cationco ltd 2 SGEY00 Earphone Stereo SGEY0003744 EMB LGE004MSKB3mW16OHM115DB85HZTO126HZ1MBL ACK3 5LTYPESTEREO4POLEPLUG CRESYNCO LTD 2 SSAD00 Adapters SSAD0034501 STA U35ER90Vac 264Vac4 8V400mA5060CENONENONE SUNLINELECTRONICSCO LTD 2 SSAD00 Adapters S SSAD0034502 90Vac 264Vac4 8V400mA5060CENONENONE 2 SSAD00 Adapters S SSAD0034504 STA U35ES90Vac...

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