LG LG-T500 Service Manual Download Page 94

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LGE Internal Use Only

Only for training and service purposes

4. TROUBLE SHOOTING

4.11 Microphone Trouble

TEST POINT

Figure 4.12

MIC201

TP05 : R517

TP06 : R518

TP02 : R515

TP01 : C236

TP03 : C240

TP04 : C241

. .

...

U201

Summary of Contents for LG-T500

Page 1: ...Internal Use Only Service Manual LG T500 Date March 2011 Issue 1 0 ...

Page 2: ...14Touch 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 97 4 13 Micro SD uSD Trouble 100 4 14 BluetoothTrouble 102 4 15 FM RadioTrouble 104 4...

Page 3: ...facilities 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 4: ...ation 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 when exch...

Page 5: ...iate 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 Digital to...

Page 6: ... 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 Phase Loc...

Page 7: ... Tx Level 7 Charging time Approx 3hours RX Sensitivity GSM EGSM 109dBm DCS 109dBm TX output power GSM EGSM 32 8dBm Level 5 DCS PCS 29 8dBm 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 Lock Key ANT Internal EAR Phone Jack Yes 3 5Ȱ PC Synchronization Yes Speech coding EFR FR HR Data and Fax Yes GPRS ...

Page 8: ...ed Only for training and service purposes 2 PERFORMANCE 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 Wired FM radio Earphone needed 18x12Ȱ Speaker 1107 Receiver ...

Page 9: ... 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 10dBm 4...

Page 10: ...Bc 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 Specificatio...

Page 11: ... 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 PCS...

Page 12: ... 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 und...

Page 13: ...or 24 Low Voltage Warning Blinking Bar 10 5 2times standby Speaker 10 at every 1min call Receiver 25 Forced shut down Voltage 0 about 3 35V 27 Battery Type Lithium Ion Battery Standard Voltage 3 7 V Battery full charge voltage 4 2 V Capacity 950mAh 28 Travel Charger Switching mode charger Input 100 240V 50 60 Hz Output 4 8V 400mA 94 26 Sustain RTC without battery Over 2 hours 10 2 7 7 5 5 4 Over 9...

Page 14: ...All right reserved Only for training and service purposes 3 TECHNICAL BRIEF 3 TECHNICAL BRIEF 3 TECHNICAL BRIEF 3 TECHNICAL BRIEF LJLWDO 0DLQ 3URFHVVRU LJXUH ROG WP DUGZDUH ORFN LDJUDP 3 1 Digital Main Processor Figure 3 1 1 X Gold tm 215 Hardware Block Diagram ...

Page 15: ... 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 1 Gbit NOR flash OneNAND flash SDR SDRAM 4 Gbit NAND flash DDR SDRAM Modem GPRS class 12 RX TX CS1 CS4 EGPRS class 12 RX MCS1 MCS9 TX MCS1 MCS4 Cipher Units A51 2 3 GEA 1 2 3 Security OMTP TR0 Secure Boot RSA ROM SHA 1 ...

Page 16: ...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 USB2 0 up to 480 Mbit s High Speed w external USB Phy over ULPI interface Stereo Headset Amplifier integrated 3 external analog measurement PIN s Bluetooth 3 1 6 Mixed Signal Improved audio performance Loudspeaker Audio Class D Amplifier 700 mW 8 ȳ mon for ...

Page 17: ...pliant Backlight Up to 4 serial white LEDs integrated LDO 3 1 9 Main LCD Display Type 240 320 QVGA 262k color parallel Interface Parallel 8 9bit MIPI DBI Type B Serial MIPI DBI Type C Interf voltage at 1 8V or 2 8V gRacr Display Controller Hardware 30 fps Display update without DMA up to 60 fps full or partial Video post processing Scaling Rotation 90 steps Mirroring Overlay with alpha blending Co...

Page 18: ...rvice purposes 3 TECHNICAL BRIEF 3 1 11 Video Capabilities Video Decoding MPEG 4 H 263 QCIF 30 fps QVGA 15fps Video Encoding MPEG 4 H 263 QCIF 15 fps 3 1 12 Audio Capabilities Polyphonic ring tones 64 voices MIDI SP MIDI FM synthesizer AMR WB True ring tones MP3 MP3 eAAC G 722 SB ADPCM encoding decoding ...

Page 19: ...er for a typical standard phone Figure 3 2 1 Block Figure of the PMU Modules X Gold tm 215 DC DC Step Down Converter for 1 8V SD1 The DC DC converter generates a 1 8V supply rail This voltage rail is used to supply main parts of the system like the digital core of the chip via LDO LCORE some parts of the mixed signal macro parts of the RF macro and the external memory if a 1 8V memory is used The ...

Page 20: ...nd 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 is required LUSB can be used as general purpose LDO LAUX The LAUX generates VAUX It is a general purpose LDO and can be used for different functions depending on the phone application e g for the display or Camera LMMC The LMMC generates VMMC It is...

Page 22: ...iven 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 settling time is ensur...

Page 23: ... 23 LGE Internal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes Figure 3 2 1 First Part of the State Machine Running in Different Power Domains than the Second Part ...

Page 24: ...E Internal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF Figure 3 2 2 Second Main Part of the Startup State Machine in the VPMU Domain ...

Page 25: ...switched on 3 2 5 Switching on due to charging When a battery with a voltage below the SSONLEV level is inserted the state machine will not start the system As long as the battery voltage stays lover than SYSONLEV the system will stay off The only possibility to start up the system is due to an external charger If an external charger is connected and detected and the battery is charged above the S...

Page 26: ... ups a staggered turn on approach for the regulators is implemented The regulators are turned on in a well defined sequence thus spreading the in rush current transients over time The IO s of X GOLD TM 215 are isolated in OFF mode core supply is off The isolation signal is controlled by the PMU state machine This ensures that the PADs are in a well defined state during core supply settling This al...

Page 27: ...3 TECHNICAL BRIEF 27 LGE Internal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes Figure 3 2 3 Start Up Sequence triggered by First Connect Event ...

Page 28: ...gnal 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 the ɆC starts operati...

Page 29: ... 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 independent from vcxo_e...

Page 30: ...s Routed in the PMU 3 2 11 PMU Clock During the first startup for example plugging in a battery a PMU internal oscillator is used for generation of the PMU clock pmu_clock The frequency is slightly above 32 kHz typ 50 kHz to be out of the audio band also for worst case devices After first startup the software shall enable the 32 kHz crystal oscillator It is not possible to use the 32 kHz oscillato...

Page 31: ...ble 3 2 13 DC DC Pre Load Register Handling The DC DC converter works in different modes If the mode is switched from PFM to PWM the pulse width of the DC DC converter depends on the current battery voltage and on the output voltage The PMU state machine knows the battery voltage because of the battery supervision function Depending on this value it selects a startup pulse width for the DC DC conv...

Page 32: ...ntrol technology pHEMT switch technology and integrated transmit filtering for best in class harmonic performance The device is designed for use as the final portion of the transmitter section in a GSM850 EGSM900 DCS1800 PCS1900 handset and eliminates the need for a PA to antenna switch module matching network The RF7171 features RFMD s latest integrated power flattening circuit which significantl...

Page 33: ...C118 DNI C108 1n C119 56p C117 4 7p 15n L110 VBAT L116 6 8n L115 6 8n L109 4 3n C110 1n C102 33p C103 22u C109 1n DNI L112 U101 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 NC3 RFIN_LB GND9 GND3 GND8 RFIN_HB ANT GND4 NC2 5 D N G 6 D N G 7 D N G 1 C N 0 X R RX1 L113 15n C111 39p SW101 ...

Page 34: ...ve 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 GOLDTM215 RF Subsystem contains a fully integrated 26 MHz digitally controlled crystal oscillator designed for 8 pF c...

Page 35: ... PCS1900 A block diagram of the RF subsystem is given in Figure 3 4 1 Figure 3 5 1 Block DIAGRAM of RF Subsystem 5 6XEV VWHP RI 30 8 3 TECHNICAL BRIEF LJXUH ORFN 5 0 RI 5 6XEV VWHP 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...

Page 36: ...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 continuous time delta sigma an...

Page 37: ...ion allows a very low power design without 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 ...

Page 38: ... 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 efficiency Support of this powe...

Page 39: ...vice purposes Figure 3 5 5 POWER SUPPLY BLOCK DIAGRAM 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 su...

Page 40: ...ontains 2048 blocks composed by 64 pages Memory array is split into 2 planes each of them consisting of 1024 blocks Like all other 2KB page NAND Flash devices a program operation allows to write the 2112 byte page in typical 250us and an erase operation can be performed in typical 3 5ms on a 128K byte block In addition to this thanks to multi plane architecture it is possible to program 2 pages at...

Page 41: ...lock erase time 3 5 ms Typ Multi block erase time 2 blocks 3 5ms Typ SEQURITY OTP area Sreial number unique ID Hardware program erase disabled during power transition ADDITIONAL FEATURE Multiplane Architecture Array is split into two independent planes Parallel operations on both planes are available having program and erase time Single and multiplane copy back program with auto matic EDC error de...

Page 42: ...ransfer per clock cycle x16 bus width Supply Voltage VDD VDDQ 1 7 1 95 V Memory Cell Array 16Mb x 4Bank x 16 I O Bidirectional data strobe DQS Input data mask signal DQM Input Clock Differential Clock Inputs CK CK MRS EMRS JEDEC Standard guaranteed CAS Latency Programmable CAS latency 2 or 3 supported Burst Length Programmable burst length 2 4 8 with both sequential and interleave mode ...

Page 43: ...ransceiver that has been optimized for use in 2 4GHz Bluetooth Wireless systems It has been designed to provide low power robust communications for applications Operating in the globally available 2 4GHz unlicensed ISM band It is fully compliant with the Bluetooth Radio Specification and enhanced data rate specification and meets or exceed the requirement to provide the highest communication link ...

Page 44: ...some integrated filtering no External filters are requires for meeting Bluetooth and regulatory harmonic and spurious requirements For integrated mobile handset applications where Bluetooth is integrated next to the celluar radio minimal external filtering can be applied to achieve near thermal noise levels for spurious and radiated noise emissions Using a highly linearized temperature compensated...

Page 45: ... Band Processor XMM215 provides SIM Interface Module The XMM215 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_N And This model supports 1 8 3V SIM Card J301 C8 C4 C11 C10 C12 C9 C7 C3 C6 C2 C5 C1 VCC GND1 RST VPP CLK IO GND2 GND5 GND3 GN...

Page 46: ... 240 RGB 320 resolution Each pixel is divided into R G B dots which are arranged in vertical stripes Gray scale or the brightness of the dots Color is determined with a 6 bit gray scale signal for each dot thus presenting a palette of More than 262 144 colors VDD_IO_1V8 100K R612 TP606 VBAT 2 2u C605 VPA_2V85 CN601 21 20 22 19 23 18 24 17 25 16 26 15 27 14 28 13 29 12 30 11 31 10 32 9 33 8 34 7 35...

Page 47: ...klight 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 control The LD...

Page 48: ...ent each LDO channel respectively where a 1 indicates selected and a 0 means not selected The B0 bit controls on off 1 0 mode for the selected LDO channel s Then in the third word bite C0 to C3 control a 16 step setting of LDO1 to LDO4 The voltage values are listed in Table 1 For LED dimming there are three operating modes Backlight I Backlight II and Backlight III to select from by writing respec...

Page 49: ... requires few external components and integrates the Power FET Charging is thermally regulated to obtain the most efficient charging rate for a given ambient temperature It has Over Voltage Protection OVP circuit at the charger input protects the PMU from input voltage up to 28V eliminating the need for and external protection circuitry An Over voltage protected LDO which can supply up to 50mA is ...

Page 50: ...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 contains information about...

Page 51: ...3 TECHNICAL BRIEF 51 LGE Internal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes Figure 3 11 3 Block Diagram and System Integration of the KPD ...

Page 52: ...sequently It features a high quality stereo digital to analog path with amplifier stages for connecting acoustic transducers to X GOLD 215 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 215 A more detailed functional description will be given in the following sections The audio front end itself...

Page 53: ...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 215 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 di...

Page 54: ...iscrimination in the audio frequency band 20 Hz 20 kHz has to be ensured Decimation Filter The digital decimation filter on X GOLD 215 has two operating modes 8 kHz output sampling rate and 16 kHz output sampling rate or 16 kHz output sample rate and 16kHz bandwidth in case of doubled ASMD clock 3 12 3 Analog Part The analog part of the X GOLD 215 audio front end in audio out direction consists of...

Page 55: ...n 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 Figure 3 12 3 Swit...

Page 56: ...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 ranging from 0 dB to 39 ...

Page 57: ...IC 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 highly reduced current...

Page 58: ... 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 capable ...

Page 59: ...tinuous 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 sca...

Page 60: ... C617 7 5p U602 8 2 7 2 6 2 5 2 8 1 7 1 6 1 5 1 4 1 3 1 12 24 11 23 10 22 9 21 8 20 7 19 6 5 4 3 2 1 3 D 4 D 5 D 6 D 7 D 1 D N G VSYNC MCLK PCLK GND2 GND5 RESET D0 SDA D1 SCL D2 STANDBY D D V D O I D D V 3 D N G D D V A 4 D N G C N Y S H 1 D N G P 2 D N G P 3 D N G P 4 D N G P CAM_HSYNC CAM_PCLK CAM_VSYNC CAM_MCLK CAM_F_DATA 6 CAM_F_DATA 5 CAM_F_DATA 4 CAM_F_DATA 3 CAM_F_DATA 2 CAM_F_DATA 1 CAM_F_...

Page 61: ...ace Figure 3 14 Touch Driver Block Diagram The SX8650 is designed for 4 wire resistive touch screen applications The touch screen or touch panel is the resistive sensor and can be activated by either a finger or stylus The touch screen coordinates and touch pressure are converted into I2C format by the SX8650 for transfer to the host The SX8650 s channel pins X X Y Y directly connect to standard t...

Page 62: ...ning and service purposes 3 TECHNICAL BRIEF TP400 U402 B2 D1 C3 A2 D3 C2 A3 D2 B3 A1 C1 B1 NIRQ SDA AUX Y GND X NRST Y VDD X SCL A0 TP401 VDD_IO_1V8 0 1u C417 I2C_SDA I2C_SCL Y Y X X TOUCH_RST TOUCH_INT Figure 3 15 2 Touch Driver Block ZD404 ZD402 ZD405 ZD403 CN404 4 3 2 1 Y Y X X ENZY0020701 ...

Page 63: ...Only for training and service purposes 4 TROUBLE SHOOTING 4 1 RF Component U301 Memory 2G NAND 1G SDRAM H9DA2GH1GHMMMR 46M U201 Main Chip A GOLD RADIO NAND PMB8815 U101 GPRS QUAD TX DUAL RX MODULE RF7171 X201 Crystal 26MHz Clock TSX 3225 SW101 RF Switch MS 156C Figure 4 1 U201 U301 X201 U101 SW101 ...

Page 64: ...and service purposes 4 TROUBLE SHOOTING 4 2 RX Trouble CHECKING FLOW 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 ...

Page 65: ... Yes Replace X201 Figure 4 2 2 Figure 4 2 3 TP1 X102 TP1_1 pin 26MHz TP1 X201 TSX 3225 2 1 3 4 26MHz GND2 HOT2 HOT1 GND1 VSIM_PWR 0 1u C231 G5 F2 F3 F1 D2 D1 E2 M10 A13 B13 K14 K13 B4 A5 B5 A4 USIF1_TXD_MTSR USIF1_RXD_MRST USIF1_RTS_N USIF1_CTS_N DPLUS DMINUS XOX XO VSIM SIM_IO SIM_CLK SIM_RST MMCI_CMD MMCI_DAT_0 MMCI_CLK USB_DP USB_DM UART_TX SIM_DATA SIM_CLK MSD_CLK MSD_D 0 MSD_CMD BT_UART_TX BT...

Page 66: ... 22p C122 100p C121 100p 1K R105 1 2p C112 C118 DNI C108 1n C119 56p C117 4 7p 15n L110 VBAT L116 6 8n L115 6 8n L109 4 3n C110 1n C102 33p C103 22u C109 1n DNI L112 U101 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 NC3 RFIN_LB GND9 GND3 GND8 RFIN_HB ANT GND4 NC2 5 D N G 6 D N G 7 D N...

Page 67: ...raining and service purposes CHECKING FLOW Check TP1 of SW101 TP1 Signal is OK Replace Mobile SW SW101 Yes No Yes Mobile SW TX Module is OK Check PMB8815 U201 Control Signal is GpCtrl1 GpCtrl0 Tx Enable OK No Yes Check TP4 of U101 Replace TX Module U101 TP2 High Band TP3 Low Band Signal is OK No Yes EGSM Rx ...

Page 68: ...and service purposes 4 TROUBLE SHOOTING 4 3 TX Trouble CHECKING FLOW 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 69: ...3 TP1 TP1 TEST POINT CIRCUIT WAVEFORM CHECKING FLOW X102 TP1_1 pin 26MHz X201 TSX 3225 2 1 3 4 26MHz GND2 HOT2 HOT1 GND1 VSIM_PWR 0 1u C231 G5 F2 F3 F1 D2 D1 E2 M10 A13 B13 K14 K13 B4 A5 B5 A4 USIF1_TXD_MTSR USIF1_RXD_MRST USIF1_RTS_N USIF1_CTS_N DPLUS DMINUS XOX XO VSIM SIM_IO SIM_CLK SIM_RST MMCI_CMD MMCI_DAT_0 MMCI_CLK USB_DP USB_DM UART_TX SIM_DATA SIM_CLK MSD_CLK MSD_D 0 MSD_CMD BT_UART_TX BT...

Page 70: ... 22p C122 100p C121 100p 1K R105 1 2p C112 C118 DNI C108 1n C119 56p C117 4 7p 15n L110 VBAT L116 6 8n L115 6 8n L109 4 3n C110 1n C102 33p C103 22u C109 1n DNI L112 U101 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 NC3 RFIN_LB GND9 GND3 GND8 RFIN_HB ANT GND4 NC2 5 D N G 6 D N G 7 D N...

Page 71: ...e purposes CHECKING FLOW EGSM Tx Check TP2 TP3 Mobile SW TX Module is OK Yes SW101 signal same as TP1 Replace SW101 No Yes Replace PMB8815 U201 TP2 HighBand TP3 Low Band Signal is OK No Yes Check PMB8815 U201 No Yes Yes Check TP4 of U101 TP1 Signal is OK Replace TX Module U101 No Control Signal is GpCtrl1 GpCtrl0 Tx Enable OK ...

Page 73: ...F2 VPMU VDD_IO_1V8 VDD_IO_1V8 VDD_IO_1V8 VDD_IO_1V8 VBAT 10u C223 22u C222 R208 5 6K 3 9K R204 VDDXO VBAT L201 3 3u R207 100K VDDMS Q201 1 2 3 VCORE R203 470 VDD_IO_1V8 VDDTDC VDD_IO_1V8 VDD_IO_1V8 VDD_IO_1V8 8 K 7 T 8 R 9 M 6 T 8 M 8 L 2 1 L 7 1 C 7 1 F 2 1 H 5 1 G 1 1 M 9 L 4 1 F 0 1 P 4 1 E 6 1 G 8 1 R 4 1 B 3 1 E 5 1 H 4 1 G 5 1 A 2 1 J 5 1 F 6 1 F 7 1 P 6 1 P 0 1 G 0 1 K 7 R 1 1 J 1 1 H 0 1 F...

Page 74: ...hange into high of POWERKEY Check the voltage of The LDO outputs at U201 Is the phone power on The phone will Properly operating Charge or Change Battery Check the contact of power key Or dome switch Replace U201 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 NO NO NO Replace U20...

Page 75: ...G_IN R400 47K VDD_IO_1V8 VBAT 1u C400 10K R410 VDD_IO_1V8 FB401 1800 U401 C5 D2 B5 D3 D1 E1 E2 E3 E5 E4 A1 C1 B1 A4 A5 A3 A2 D5 4 D 4 C 3 C 2 C 2 B 3 B 4 B L C S A D S T N I 1 D N G 2 D N G 3 D N G 4 D N G BATT2 DN DP U1 U2 AUD1 AUD2 MIC VBUS1 VBUS2 D D ID RES DSS EXPDET CAP BATT1 C403 1u 1u C402 R425 10 R426 10 USB_DP USB_DM UART_TX MUIC_ACC_ID UART_RX VUSB_LDO_4V9 I2C_SDA I2C_SCL MUIC_IO_P MUIC_...

Page 76: ...CKING FLOW START Is I O Connector CN401 well soldered Check the voltage at TP01 Charging IC U401 5 1V YES YES Battery is charged YES Charging is properly operating NO NO NO Resolder the CN401 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 77: ... TROUBLE SHOOTING 77 LGE Internal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes 4 6 Vibrator Trouble TEST POINT Figure 4 6 ซ Vibrator PAD VB401 TP1 ...

Page 78: ...K L C K 2 3 F K 2 3 C S O N _ T E S E R N I 2 T 0 K L C _ 1 S 2 I X R _ 1 S 2 I X T _ 1 S 2 I 0 A W _ 1 S 2 I L C S _ C 2 I CM315_12_5PF X202 32 768KHz 2 1 N _ T E D _ D S M S T R _ T R A U _ T B S T C _ T R A U _ T B T U O _ M C P _ T B N I _ M C P _ T B K 2 3 _ C T R N _ T S R _ M A C 3 T U O _ Y E K 2 T U O _ Y E K N _ T E S E R P _ B I V E T A D P U _ W S _ C F N S C _ I P S 6 T N I E 0 T N I ...

Page 79: ...ervice purposes 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 the Pad NO Is the voltage at VB401 high Check the TP1 Is PWM Signal OK Replace U201 NO YES ...

Page 81: ... C604 2 2u C610 C603 1u 100K R606 U601 24 23 22 21 20 19 18 8 7 6 5 9 4 10 3 11 2 12 1 3 1 4 1 5 1 6 1 7 1 L C S A D S N E M W P F C D N G P LDO1 N 2 C LDO2 N 1 C LDO3 P 1 C LDO4 P 2 C AGND VIN LDOIN LED6 LED5 LED4 LED3 LED2 LED1 VOUT LCD_LED_CA5 LCD_LED_CA4 LCD_LED_CA3 LCD_LED_CA2 LCD_LED_CA1 LCD_PWM LCD_BL_CTRL I2C_SDA I2C_SCL TP7 15pF FL603 0 1 5 6 4 7 3 8 2 9 1 INOUT_A1 INOUT_B1 INOUT_A2 INOUT...

Page 82: ...rnal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING Waveform Graph 4 7 1 LCD Backlight Control Signal Waveform Graph 4 7 2 LCD Data Waveform ...

Page 83: ... of CN601 with LCD connector ok YES NO Reassemble LCD connector 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 FL601 FL602 FL603 TP606 Resoldering or Replace U601 NO Resoldering EMI filter FL601 FL602 FL603 Does LCD work properly Replace LCD module LCD working well YES ...

Page 85: ...A 7 I2C_SDA I2C_SCL CAM_PWDN CAM_RST_N 1n C236 1n C237 C242 220n R229 1K 1K R230 VDD_IO_1V8 TP204 T12 P13 R12 P15 P14 T15 R15 1 1 F 1 T 8 1 T 8 1 A 1 A 1 1 R 7 A 7 B 0 1 C 0 1 B X T _ 1 S 2 I 0 A W _ 1 S 2 I L C S _ C 2 I A D S _ C 2 I F F O N O 1 C N 2 C N 3 C N 4 C N S F D D V MICN2 MICP2 VMIC VUMIC ACD AGND VREF PWRON S T C _ T R A U _ T B T U O _ M C P _ T B I2C_SDA I2C_SCL HS_JACK_DET 1 T N I...

Page 86: ... Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING Waveform Graph 4 8 1 I2C Data Waveform Graph 4 8 2 MCLK Waveform Graph 4 8 3 CAM_VSYNC vs CAM_HSYNC Waveform Graph 4 8 4 CAM_HSYNC vs CAM_PCLK Waveform ...

Page 87: ... TP04 2 8V and 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 Data pins on U602 START Camera working well NO YES YES Resoldering or Replace U601 NO Replace U201 or Change the board YES YES NO Replace U201 or Change the board NO Resoldering or Replace Camera Module ...

Page 88: ... All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 4 9 Speaker Receiver Trouble TEST POINT M501 TP03 C539 TP04 C540 TP02 C508 TP01 C507 U201 BB chip TP07 L506 TP08 L507 TP05 L504 TP06 L505 CN502 Receiver contact CN501 Speaker contact ...

Page 89: ... V P C D N G 39p C509 C512 39p C513 2 2u C507 47n C508 47n C539 47n 47n C540 I2C_SDA I2C_SCL SPK_L SPK_R SPK_N SPK_P HS_GND HS_OUT_L HS_OUT_R AMP_HS_N AMP_HS_P CIRCUIT C235 47p 47p C234 C233 DNI C232 DNI VMIC_BIAS_P VAUD_HS_BIAS N17 N18 T16 R16 M18 M17 K17 P11 P4 J4 T2 J5 G1 BC3_n SDCLKO BFCLKO_0 BFCLKO_1 CKE ANAMON FSYS_EN EPN EPP HSL HSR LSN LSP DDR_CKE DDR_CLK_P DDR_DQS 1 DDR_CLK_N BT_CLK_REQ S...

Page 90: ...eceiver Receiver Working well Check the Audio signal C507 C508 C539 C540 TP01 04 No Yes Change the U201 Replace Change Receiver Speaker No Check the Audio signal L506 L507 TP07 08 No Replace Change the M501 Yes Yes START Mp3 Check the state of contact of speaker Speaker Working well Yes Check the Audio signal L504 L505 TP05 06 Yes Yes No No No Check the Audio signal C507 C508 C539 C540 TP01 04 ...

Page 91: ... 2011 LG Electronics Inc All right reserved Only for training and service purposes 4 10 Earphone Trouble TEST POINT Headset MIC Resoldering points M501 TP01 C539 TP02 C540 U201 BB chip U U TP03 FB507 TP04 FB508 FB502 FB501 3 5Ɋ Ear Mic Connector TP05 TP06 ...

Page 92: ... E4 E3 C4 4 D 2 D D D V P H D D V P S IN3 OUT OUT HPL IN3 HPR CP IN1 CN IN1 IN2 IN2 SDA SCL S A I B D D V P C S S V P C D N G 39p C509 C512 39p C513 2 2u C507 47n C508 47n C539 47n 47n C540 I2C_SDA I2C_SCL SPK_L SPK_R SPK_N SPK_P HS_GND HS_OUT_L HS_OUT_R AMP_HS_N AMP_HS_P C235 47p 47p C234 C233 DNI C232 DNI VMIC_BIAS_P VAUD_HS_BIAS N17 N18 T16 R16 M18 M17 K17 P11 P4 J4 T2 J5 G1 BC3_n SDCLKO BFCLKO...

Page 93: ...nt 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 J501 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 FB501 FB502 FB508 FB509 C539 C540 Resolder FB504 R508 R509 C520 C518 ...

Page 94: ...opyright 2011 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 4 11 Microphone Trouble TEST POINT Figure 4 12 MIC201 TP05 R517 TP06 R518 TP02 R515 TP01 C236 TP03 C240 TP04 C241 U201 ...

Page 95: ...M18 M17 K17 P11 P4 J4 T2 J5 G1 BC3_n SDCLKO BFCLKO_0 BFCLKO_1 CKE ANAMON FSYS_EN EPN EPP HSL HSR LSN LSP MICN1 MICP1 MICN2 MICP2 VMIC VUMIC ACD AGND VREF HS_MIC_N HS_MIC_P MAIN_MIC_N MAIN_MIC_P DDR_CKE DDR_CLK_P DDR_DQS 1 DDR_CLK_N BT_CLK_REQ HS_JACK_DET SPK_L SPK_R RCV_HS_N RCV_HS_P CIRCUIT TP01 R518 100 C532 10u C529 0 1u MIC501 2 1 2 2K R519 2 2K R516 VMIC_BIAS_P C530 39p R515 1K 100 R517 C533 ...

Page 96: ...DCS mode or GSM850 PCS mode CHECKING FLOW START NO YES Microphone will work properly YES Check the signal Level at each side of MIC501 Is it a few tens mV AC Check the soldering of R517 R518 TP05 06 Make a phone call then check C236 TP02 mic bias comes from U201 NO Change the microphone YES NO Re solder component 1 Check mic Bias signal line 2 Change the U201 Check microphone sound hole ...

Page 97: ...4 TROUBLE SHOOTING 97 LGE Internal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes 4 12 SIM Card Interface Trouble TEST POINT Figure 4 13 ...

Page 98: ...1u C310 C311 DNI C312 22p C309 22p R319 DNI SIM_DATA SIM_CLK SWP SIM_RST_N No NFC X201 TSX 3225 2 1 3 4 26MHz GND2 HOT2 HOT1 GND1 VSIM_PWR 0 1u C231 G5 F2 F3 F1 D2 D1 E2 M10 A13 B13 K14 K13 B4 A5 B5 A4 USIF1_TXD_MTSR USIF1_RXD_MRST USIF1_RTS_N USIF1_CTS_N DPLUS DMINUS XOX XO VSIM SIM_IO SIM_CLK SIM_RST MMCI_CMD MMCI_DAT_0 MMCI_CLK USB_DP USB_DM UART_TX SIM_DATA SIM_CLK MSD_CLK MSD_D 0 MSD_CMD BT_U...

Page 99: ... 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 properly working ...

Page 100: ...uble TEST POINT Figure 4 14 CIRCUIT U U U U U U UTP01 TP02 TP03 C317 33p 33p C318 1u C301 VMMC_2V85 VMMC_2V85 56K R301 R302 56K 56K R303 R304 56K R305 56K R311 100K VDD_IO_1V8 VA307 S301 16 8 7 6 5 4 3 2 1 15 G5 G3 G1 CD C1 C2 C3 C4 C5 C6 C7 C8 G6 G4 G2 COM G7 C319 33p 33p C320 C321 33p MSD_CLK MSD_DET_N MSD_D 1 MSD_D 0 MSD_CMD MSD_D 3 MSD_D 2 TP03 TP03 TP02 ...

Page 101: ...y for training and service purposes CHECKING FLOW Micro SD Card will work properly Micro SD Detect OK START Re attach or Replace S301 NO YES uSD_DET R311 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 C301 TP01 2 8V YES NO Change U201 ...

Page 102: ...M_CS_N PCM_OUT PCM_CLK LPO_IN PCM_SYNC XIN UART_TXD XOUT UART_RXD UART_RTS_N GPIO_0 UART_CTS_N GPIO_1 1 C D D V HUSB_DP 6 S S V 5 S S V 4 S S V 3 S S V 2 S S V 1 S S V GPIO_6 GPIO_5 C706 10n TP702 VDD_IO_1V8 C704 10p C705 2 2u VPA_2V85 10p C703 C702 10n 2 2u C701 VDD_IO_1V8 10n C707 R702 0 R780 1K TP705 TP701 TP706 TP703 2450MHz FL701 4 2 3 1 IN OUT GND1 GND2 C714 10p R711 0 TP707 FB701 600 R709 0...

Page 103: ...good START Check of BT Ant condition NO YES YES BT will work properly Check condition of matching components C708 C709 TP1 TP2 A condition is good NO YES Give the additory solder in C708 C709 R707 Replace Ant701 Ant702 Check Bias Voltage VDD_IO_1V8 YES NO Replace U701 Check RTC32K C712 YES NO Replace U701 Check BT_CLK_26M C713 NO Replace U701 C708 TP1 C709 TP2 R707 ...

Page 104: ...ht 2011 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 4 15 FM Radio Trouble TEST POINT Figure 4 17 J501 FM_ANT_C227 LNA_EN_L203 FM_ANT2_C229 Q202 M501 L501 C501 C536 VA501 TP1_ TP2_ TP3_ ...

Page 105: ...d service purposes 10 FB507 VA501 R522 DNI L501 100n C536 1n C501 27p ZD503 ZD504 ZD506 J501 6 1 4 4D 5 M5 MIC M4 DETECT M4 L M1 R M6 GND ZD505 FM_ANT HS_GND CIRCUIT TP2 R223 4 7K R221 24K Q202 2 1 3 470n C230 C227 330p D201 C229 470n C228 1u R222 270 5 1 R220 L203 22n FM_ANT FM_LNA_EN FM_ANT_2 To Main Chipset TP1 TP3 ...

Page 106: ...TART Check of ear_jack condition NO YES FM_radio will work properly Check condition of matching components L501 C501 VA501 A condition is good NO YES Give the additory solder in L501 C501 VA501 Replace J501 Check Bias Voltage VDD_FMR C225 YES NO Replace U201 YES Check Bias Voltage FM LNA LNA_EN_L203 YES NO Replace Q202 A condition is good L501 TP1 C501 TP2 VA501 TP3 TP1 3 ...

Page 108: ...5 1 1 F 1 T 8 1 T 8 1 A 1 A 1 1 R 7 A 7 B 0 1 C 0 1 B X T _ 1 S 2 I 0 A W _ 1 S 2 I L C S _ C 2 I A D S _ C 2 I F F O N O 1 C N 2 C N 3 C N 4 C N S F D D V MICN2 MICP2 VMIC VUMIC ACD AGND VREF PWRON S T C _ T R A U _ T B T U O _ M C P _ T B I2C_SDA I2C_SCL HS_JACK_DET 1 T N I E 6 T N I E 1 G I D _ P D D V TP400 U402 B2 D1 C3 A2 D3 C2 A3 D2 B3 A1 C1 B1 NIRQ SDA AUX Y GND X NRST Y VDD X SCL A0 TP401...

Page 109: ...ING FLOW Yes Yes Yes No No Check CN404 and touch panel contact Check touch signal ZD402 405 TP05 08 Resolder or Replace U402 Contact well CN404 and touch panel Check supply voltage of U402 C417 TP01 Touch will work properly START Yes Resolder or Replace U201 Check I2C signal of U201 R229 R230 TP03 04 Resolder CN404 or replace touch panel Yes ...

Page 110: ... Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes 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 T500 LG T500 ...

Page 111: ...5 DOWNLOAD 111 LGE Internal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes kss 㾡 a 㜼 On Y_W kssP kssG 㾡 aG㜼 On Y_W UkssP LG T500 LG T500 LG T500 ...

Page 119: ...5 DOWNLOAD 119 LGE Internal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes LG T500 LG T500 LG T500 LG T500 LG T500 LG T500 LG T500 LG T500 LG T500 ...

Page 124: ...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 NC3 RFIN_LB GND9 GND3 GND8 RFIN_HB ANT GND4 NC2 5 D N G 6 D N G 7 D N G 1 C N 0 X R RX1 L113 15n C111 39p ANT103 R106 DNI 100p C105 ANT102 C106 DNI 100p C104 DNI C107 SW101 4 3 2 1 ANT COMMON G3 G4 C123 100p GND RF_HB_TX RF_LB_TX RF_HB_RXN RF_LB_RXP RF_TX_EN RF_ANT_SEL 0 RF_ANT_SEL 1 RF_TX...

Page 125: ... MICN2 MICP2 VMIC VUMIC ACD AGND VREF 1 D S _ D D V B F _ 1 D S 1 D S _ S S V W S 1 D S 1 S M S S V 2 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 1 U B E _ D D V 2 U B E _ D D V L L D _ 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 4 E R O C S S V 5 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 ...

Page 126: ...p C318 0 1u C315 C314 0 1u 0 1u C305 C303 0 1u J301 C8 C4 C11 C10 C12 C9 C7 C3 C6 C2 C5 C1 VCC GND1 RST VPP CLK IO GND2 GND5 GND3 GND4 Rsvd1 Rsvd2 VSIM_PWR_NFC DNI R317 VSIM_PWR R318 4 7K 0 R320 VSIM_PWR VSIM_PWR_NFC 0 1u C310 C311 DNI C312 22p C309 22p R319 DNI 1u C301 VMMC_2V85 VMMC_2V85 56K R301 R302 56K 56K R303 R304 56K R305 56K R311 100K VDD_IO_1V8 VA307 S301 16 8 7 6 5 4 3 2 1 15 G5 G3 G1 C...

Page 127: ...419 680 R420 D404 D402 D403 KB403 KB402 680 R418 KB401 300pF FL401 IN OUT GND1 GND2 51K R421 R422 100K R427 0 ZD401 6 8K R413 0 1u C409 VBACKUP_BAT R425 10 R426 10 R428 0 22pF C408 56n L402 L401 56n C416 1u 33p C415 VB401 2 1 U402 B2 D1 C3 A2 D3 C2 A3 D2 B3 A1 C1 B1 NIRQ SDA AUX Y GND X NRST Y VDD X SCL A0 TP401 VDD_IO_1V8 0 1u C417 ZD403 CN404 4 3 2 1 D401 R417 100K 1K R416 USB_DP USB_DM PWRON UA...

Page 128: ...35 10 FB501 FB502 7 2 5 R K 0 2 1 LMV331 EUSY0407701 U502 4 3 2 5 1 IN VCC GND IN OUT C537 1u C501 2 2u C524 1u R513 390p M501 3 D 1 C 2 E 2 A C2 B2 B4 A4 B3 E1 A3 D1 A1 C3 B1 E4 E3 C4 4 D 2 D D D V P H D D V P S IN3 OUT OUT HPL IN3 HPR CP IN1 CN IN1 IN2 IN2 SDA SCL S A I B D D V P C S S V P C D N G FB504 1800 C517 39p C520 39p 39p C519 C518 39p 1800 FB503 C525 1u C509 0 1u C516 1u C505 2 2u VBAT ...

Page 129: ...1 INOUT_A2 INOUT_B2 INOUT_A3 INOUT_B3 INOUT_A4 INOUT_B4 1 G 2 G VBAT C602 1u 1u C601 C609 1u 1u C608 C607 1u FM_LNA_EN VCAM_DIG_1V8 VCAM_ANA_2V8 2 2u C604 2 2u C610 C603 1u 100K R606 U601 24 23 22 21 20 19 18 8 7 6 5 9 4 10 3 11 2 12 1 3 1 4 1 5 1 6 1 7 1 L C S A D S N E M W P F C D N G P LDO1 N 2 C LDO2 N 1 C LDO3 P 1 C LDO4 P 2 C AGND VIN LDOIN LED6 LED5 LED4 LED3 LED2 LED1 VOUT 1u C612 VA601 VD...

Page 130: ...4 S S V 3 S S V 2 S S V 1 S S V GPIO_6 GPIO_5 C706 10n TP702 VDD_IO_1V8 C704 10p C705 2 2u VPA_2V85 10p C703 C702 10n 2 2u C701 VDD_IO_1V8 10n C707 R702 0 R780 1K TP705 TP701 TP706 TP703 2450MHz FL701 4 2 3 1 IN OUT GND1 GND2 ANT701 ANT702 DNI R701 C714 10p R711 0 TP707 FB701 600 R709 0 DNI R710 BT_UART_TX BT_UART_RX BT_UART_RTS BT_UART_CTS BT_PCM_SYNC BT_PCM_OUT BT_PCM_IN BT_PCM_CLK BT_WAKEUP RTC...

Page 131: ...31 Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 7 CIRCUIT DIAGRAM CN101 3 2 1 KB101 3 2 1 CN101 4 KB101 KB102 VOL UP F_SK_VOL VOL DOWN ...

Page 132: ...nternal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes 8 BGA PIN MAP 8 BGA PIN MAP BGA IC pin check U201 Ball Diagram Top View PMB8815 A GOLDRADIO not in use ...

Page 133: ...A PIN MAP 133 LGE Internal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes BGA IC pin check U201 ؼ Ball Diagram Top View H9DA2GH1GHMMMR 46M NC not in use ...

Page 134: ...4 KB401 L506 C 5 N 0 2 C535 L507 KB 3 0 4 ZD503 4 0 5 B F 1 0 2 N C 4 0 4 D Z 2 0 4 D Z 5 0 4 D Z 3 0 4 D Z 4 0 4 D 5 1 4 R 3 0 4 D 0 2 4 R KB402 6 0 5 D Z 2 0 5 B F 2 0 5 D Z 1 0 5 D Z 8 1 4 R 2 0 4 D 9 1 4 R ZD504 5 0 5 D Z FB501 3 0 5 B F C534 LG T500_MAIN_EAX64005201_1 0_TOP 9 PCB LAYOUT CN404 Touch screen connector no touch screen ...

Page 135: ... C C216 C239 C238 C201 C531 8 2 5 C R517 C527 C240 0 3 5 C M IC 5 0 1 C911 3 1 9 C 2 0 8 R 6 0 8 R 4 0 6 L F TP601 TP600 5 0 6 L F 0 2 3 R 0 1 3 C 8 0 6 A V 8 1 3 R 9 1 3 R 2 0 9 C C917 C910 FB905 FB903 TP901 R905 4 0 9 B F 5 1 9 C 6 0 9 R TP904 TP903 8 1 8 C Q801 R814 0 1 2 R 2 1 2 R 2 0 3 C C305 1 0 2 U 4 3 2 C R224 C243 C244 6 0 1 R ANT103 L203 9 2 2 C 0 2 2 R 1 0 9 X 4 2 8 C 8 0 8 R 6 1 8 C 5 ...

Page 140: ... 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 4 Reset Information 3...

Page 141: ...ervice purposes 11 STAND ALONE TEST 11 STAND ALONE TEST 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 1 Set COM Port 2 Check PC Bau Rate 3 Confirm EEPROM Delta ...

Page 142: ...ernal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes Not Connected ԛ Connected 4 Click Update Info for communicating Phone and Test Program 11 STAND ALONE TEST ...

Page 143: ...eserved Only for training and service purposes 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 11 STAND ALONE TEST ...

Page 144: ...d service purposes 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 11 STAND ALONE TEST ...

Page 145: ... 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 11 STAND ALONE TEST ...

Page 146: ...alibration tool that perform Tx Rx and Battery Calibration with Agilent 8960 GSM call setting instrument and Tektronix PS2521G Programmable Power supply Auto cal generates calibration data by communicating with phone and measuring equipment then write it into calibration data block of flash memory in GSM phone 12 2 Tachyon Directory 12 AUTO CALIBRATION LGT500 LGT500 LGT500 LGT500 LGT500 LGT500 ...

Page 147: ...ernal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes 12 3 Test Equipment Setup 1 Turn on the Phone 2 LGE Tachyon Tachyon exe 12 4 Procedure 12 AUTO CALIBRATION ...

Page 150: ...ervice purposes 1 User Model Selection 2 Calibration Auto Test 3 Stop 4 Auto Test Only 5 Loss Setting 6 System Option Setting 7 Running Option Setting 8 Voltage Current Setting 9 Show Result Window 10 Setting 䟸㜄 click X P Y P Z P P P P P _ P P XW P 6 Tachyon Setting 1 Tachyon Main UI 12 AUTO CALIBRATION ...

Page 151: ...151 LGE Internal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes ziG Gz Gw z G j 2 Click System Option Setting Menu 3 Report Data 12 AUTO CALIBRATION ...

Page 153: ...ternal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes j SG Gz j GRGh Gwhzz 8 Tachyon RF Calibration Start 9 Tachyon RF Calibration finishes 12 AUTO CALIBRATION ...

Page 154: ... 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 11 8 Target Power 29 8 dBm 29 8 dBm 29 8 dBm Max power 1909 8 MHz 1880 MHz 1850 2 MHz Frequency 810 661 512 Channel PCS 1900 29 8 dBm 29 8 dBm 29 8 dBm Max power 1784 8 MHz 1747 6 MHz 1710 2 MHz Frequency 885 699 512 Channe...

Page 155: ... Location Description ACQ00 Cover Assembly Rear EAA00 PIFA Antenna Multiple ACQ01 Cover Assembly Front MJN00 Tape Window MBG00 Button MBG01 Button EBD00 Touch Window Assembly ABH00 Button Assembly EAJ00 LCD Module TFT EBR00 PCB Assembly Main SJMY00 Motor DC EAA01 PIFA Antenna Bluetooth SURY00 Receiver SUMY00 Microphone Condenser EAX00 PCB Sidekey EAX01 PCB Sidekey EAB00 Speaker Dual Mode ADB00 Dom...

Page 156: ...ack 4 MJN009400 Tape Camera MJN67754601 CUTTING PET LGT500 ADEUBK ZZ Without Color 4 MHK000000 Sheet MHK63389001 CUTTING PC SHEET LGT500 ADEUBK BK Black 4 MDJ000000 Filter MDJ63086201 CUTTING PET LGT500 ADEUBK BK Black 4 MCQ015700 Damper Connector MCQ66593101 CUTTING PET LGT500 ADEUBK BK Black 4 MCQ074200 Damper Speaker MCQ66593001 CUTTING PET LGT500 ADEUBK BK Black 4 MCQ009400 Damper Camera MCQ66...

Page 157: ... ZY ZZ PRESS STS 5 MCR000001 Decor MCR64368001 MOLD ABS LGT500 ADEUBK SV Silver 5 MJN020801 Tape Decor MJN67754501 CUTTING PET LGT500 ADEUBK ZZ Without Color 5 MJN000000 Tape MJN67754401 CUTTING PET LGT500 ADEUBK ZZ Without Color 5 MJN020800 Tape Decor MJN67754201 CUTTING PET LGT500 ADEUBK ZZ Without Color 5 MCQ000001 Damper MCQ66592701 CUTTING PET LGT500 ADEUBK BK Black 4 MEV000000 Insulator MEV6...

Page 158: ... MBK62856101 COMPLEX LGT500 ADEUBK ZZ Without Color 5 MEV000000 Insulator MEV63892901 COMPLEX LGT500 ADEUBK ZZ Without Color 5 ABM00 Can Assembly Shield ABM73576301 LGT500 ADEUBK ZZ Without Color 6 MBK070300 Can Shield MBK62913401 PRESS SUS304 0 2 LGT500 ADEUBK ZZ Without Color 6 MKU101700 Absorber Electromagnetic Wave MKU30323201 COMPLEX LGT500 ADEUBK BK Black 4 EBR071800 PCB Assembly Main SMT EB...

Page 159: ...K ZZ EU1 TYPE_Body SW Cap EU AL_1200EA 3 MBEC00 Box Carton MBEC0003601 COMPLEX GD510 CZESV ZZ Without Color 3 MCCL00 Cap Box MCCL0002501 COMPLEX GD510 CZESV ZZ Without Color 3 MPCY00 Pallet MPCY0012403 COMPLEX KG800 FRABK DB DARK BLUE 2 MBAD00 Bag Vinyl MBAD0005204 COMPLEX LG LX260 SPRAG ZZ Without Color 2 MBEE00 Box Master MBEE0061001 COMPLEX GD510 CZESV ZZ Without Color 2 MLAC00 Label Barcode ML...

Page 160: ...008102 BLM15HD182SN1D 1800 ohm 1 0X0 5X0 5 25 2 2 ohm 0 2A SMD R TP 2P 0 MURATA MANUFACTURING CO LTD 6 ZD501 ZD502 ZD505 Diode TVS EDTY0012501 UCLAMP3311T TCT SLP1006P2T 3 3 V 40 W R TP 4 3 V 6 5 V 5 A R TP 2P 1 SEMTECH CORPORATION 6 C234 C235 C238 C239 C240 C241 C413 C524 C526 Capacitor Ceramic Chip ECCH0000122 MCH155A470JK 47pF 5 50V NP0 55TO 125C 1005 R TP ROHM Semiconductor KOREA CORPORATION 6...

Page 161: ...5pF 0 25PF 50V NP0 55TO 125C 1005 R TP TDK KOREA COOPERATION 6 C503 C621 C622 C623 Capacitor Ceramic Chip ECCH0002001 C1005JB0J104KT000F 0 1uF 10 6 3V Y5P 30TO 85C 1005 R TP TDK CORPORATION 6 L115 L116 Inductor Multilayer Chip ELCH0001003 ELJRF6N8JFB ELJRF6N8JFB 6 8 nH J 1005 R TP chip inductor PBFREE Panasonic Corporation 6 U402 IC Resistive Touch Screen Controller EUSY0430501 SX8650 WLCSP 12 R T...

Page 162: ...CH0000115 MCH155A220JK 22pF 5 50V NP0 55TO 125C 1005 R TP ROHM Semiconductor KOREA CORPORATION 6 R1112 R802 R804 R814 PCB ASSY MAIN PAD SHORT SAFP0000401 LG LU3000 LGTBK MAIN A 6 L501 Inductor Multilayer Chip ELCH0003842 LQG15HSR10J02D 100NH 5 150mA 1 25OHM 600MHZ 8 SHIELD NONE 1 0X0 5X0 5MM R TP MURATA MANUFACTURING CO LTD 6 R203 Resistor Chip ERHZ0000484 MCR01MZP5J471 470OHM 5 1 16W 1005 R TP RO...

Page 163: ...Chip ERHZ0000401 MCR01MZSJ000 0OHM 5 1 16W 1005 R TP ROHM 6 C105 C121 C122 C123 C525 Capacitor Ceramic Chip ECZH0000813 C1005C0G1H101JT 100pF 5 50V NP0 55TO 125C 1005 R TP TDK KOREA COOPERATION 6 FL601 FL602 FL603 Filter EMI Power SFEY0010501 ICVE10184E150R101FR ESD EMI 0HZ 15pF 0H SMD R TP INNOCHIPS TECHNOLOGY 6 R425 R426 R503 Resistor Chip ERHZ0000402 MCR01MZP5J100 10OHM 5 1 16W 1005 R TP ROHM 6...

Page 164: ...CS CO LTD 6 FL604 FL605 Filter EMI Power SFEY0011601 ICVE10184E150R500FR ESD EMI 0HZ 15pF 0H SMD R TP INNOCHIPS TECHNOLOGY 6 C412 C501 Capacitor Ceramic Chip ECCH0000117 CL05C270JB5NNNC 27pF 5 50V NP0 55TO 125C 1005 R TP 0 5 SAMSUNG ELECTRO MECHANICS CO LTD 6 C102 C317 C318 C319 C320 C321 C415 Capacitor Ceramic Chip ECZH0000830 C1005C0G1H330JT000F 33pF 5 50V NP0 55TO 125C 1005 R TP TDK KOREA COOPE...

Page 165: ...16W 1005 R TP ROHM 6 C212 C225 C505 C506 C521 C522 Capacitor Ceramic Chip ECCH0000151 CL05B472KB5NNNC 4 7nF 10 25V X7R 55TO 125C 1005 R TP SAMSUNG ELECTRO MECHANICS CO LTD 6 R207 R422 R521 Resistor Chip ERHZ0000204 MCR01MZP5F1003 100KOHM 1 1 16W 1005 R TP ROHM 6 R221 Resistor Chip ERHZ0000449 MCR01MZP5J243 24KOHM 5 1 16W 1005 R TP ROHM 6 R501 R511 Resistor Chip ERHZ0000407 MCR01MZP5J105 1MOHM 5 1 ...

Page 166: ...LECTRO MECHANICS CO LTD 6 C228 C301 C601 C602 C611 C612 Capacitor Ceramic Chip ECZH0001215 C1005X5R1A105KT000F 1uF 10 10V X5R 55TO 85C 1005 R TP TDK KOREA COOPERATION 6 VA401 VA402 Varistor SEVY0001001 EVLC14S02050 14V 0 50F 1 0 0 5 0 6 NONE SMD R TP AMOTECH CO LTD 6 C115 Capacitor Ceramic Chip ECZH0000802 C1005C0G1H010CT 1pF 0 25PF 50V NP0 55TO 125C 1005 R TP TDK KOREA COOPERATION 6 L103 L114 Ind...

Page 167: ... U1 IC Analog Switch EUSY0186504 FSA2259UMX QFN 8 R TP Dual SPDT IC Analog Switch FAIRCHILD SEMICONDUCTOR 6 L110 L113 Inductor Multilayer Chip ELCH0004710 1005GC2T15NJLF 15NH 5 250mA 0 53OHM 2GHZ 8 SHIELD NONE 1 0X0 5X0 5MM R TP PILKOR ELECTRONICS LTD 6 Q501 FET EQFP0000101 2SJ347 P CHANNEL MOSFET 20V 7 0 05A 40OHM 100mW SSM R TP 3P TOSHIBA 6 L108 L109 Inductor Multilayer Chip ELCH0004733 1005GC2T...

Page 168: ...MOTECH CO LTD 6 R204 Resistor Chip ERHZ0000475 MCR01MZP5J392 3 9KOHM 5 1 16W 1005 R TP ROHM 6 D201 Diode TVS EDTY0008606 PRSB6 8C 4 7V 5 7 10W R TP 2P 1 PROTEK DEVICES INC 6 R209 R223 Resistor Chip ERHY0000254 MCR01MZP5J472 4 7KOHM 5 1 16W 1005 R TP ROHM 6 FL101 Filter Saw Dual EAM62071301 B9836 GSM QUAD 1 8 1 4 0 4 SMD R TP 10P EPCOS PTE LTD 6 C203 Capacitor Ceramic Chip ECCH0005603 GRM188R61A225...

Page 169: ...8MHz NAND booting 2 0Mp FMR IC Digital Baseband Processor BGA R TP 281P INFINEON TECHNOLOGIES ASIA PACIFIC PTE LTD 6 C410 Capacitor TA Conformal ECTH0002703 TCTAL1A107M8R 0 0001F 20 10V 50UA 55TO 125C 0OHM 3 2x1 6x1 1 NONE SMD R TP ROHM CO LTD 6 R220 Resistor Chip ERHZ0003801 MCR01MZP5J5R1 5 1OHM 5 1 16W 1005 R TP ROHM 6 R508 Resistor Chip ERHZ0000529 MCR01MZP5J152 1 5KOHM 5 1 16W 1005 R TP ROHM 6...

Page 170: ...M2070B2KUBXG 2 3VTO5 5V 158 4mW 42P WLBGA R TP 42P BROADCOM ASIA DISTRIBUTION PTE LTD 6 VA501 Varistor SEVY0010501 IECS0505C040FR 10V 0 4E 12F 1 0x0 5x0 3 IEC61000 4 1 ESD level 4 SMD R TP INNOCHIPS TECHNOLOGY 6 C523 Capacitor Ceramic Chip ECCH0000129 MCH155A121JK 120pF 5 50V NP0 55TO 125C 1005 R TP ROHM Semiconductor KOREA CORPORATION 6 SW101 Connector RF ENWY0008701 MS 156C NONE STRAIGHT SOCKET ...

Page 171: ...S CO LTD 2 SBPL00 Mobile Phone Battery Li Ion SBPL0090501 KU250 553450 LGC EU KU250 553450 LGC EU 3 7 V 950 mAh 1 CELL PRISMATIC KU250 Europe BATT IP Pb Free LG CHEMICAL 2 AFN053800 Manual Assembly Operation AFN75492001 LGT500 ADEUBK ZZ Without Color LGT500 manual assy for DEU 3 MBM087200 Card Warranty MCDF0001110 COMPLEX KP202 VDG ZZ Without Color PRINTING empty 3 MFL053800 Manual Operation MFL67...

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Summary of Contents for LG-T500

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LG LG-T500, Service Manual, Page: 94 / 171

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Summary of Contents for LG-T500

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