LG LG-T370 Service Manual Download Page 71

Page: 71 / 166

4. TROUBLE SHOOTING

- 71 -

LGE Internal Use Only

Only for training and service purposes

START

Battery is charged?

Charging is properly operating

Yes

Charging is

properly operating

Battery is charged?

Replace the main board

Yes

Is I/O Connector(CN401)

well-soldered ?

Yes

Resolder the CN401

(Pin 1 : VBUS_USB)

Check the voltage at

TP1 (Charging IC(U401))=5.1V ?

The TA is out of order

Change the TA

Change the battery

Summary of Contents for LG-T370

Page 1: ...Internal Use Only Service Manual LG T370 Date April 2012 Issue 1 0 ...

Page 2: ...ING 62 4 1 RF Component 62 4 2 RXTrouble 63 4 3 Power OnTrouble 68 4 4 ChargingTrouble 70 4 5VibratorTrouble 72 4 6 LCDTrouble 75 4 7 CameraTrouble 79 4 8 Speaker ReceiverTrouble 83 4 9 EarphoneTrouble 85 4 10 MicrophoneTrouble 88 4 11 SIM Card InterfaceTrouble 90 4 12 Micro SD uSD Trouble 92 4 13 BluetoothTrouble 94 4 14 FM RadioTrouble 96 4 15Touch trouble 98 4 16 Memory trouble 100 4 17 Proximi...

Page 3: ... of facilities accessed through or connected to it 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 harm or inte...

Page 4: ...with sensitive laboratory equipment medical equipment etc Interference from unsuppressed engines or electric motors may cause problems 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...

Page 5: ...Communication System DCS Digital to Analog Converter DAC Constant Current Constant Voltage CC CV Gaussian Minimum Shift Keying GMSK Flexible Printed Circuit Board FPCB Electrostatic Discharge ESD Electrical Erasable Programmable Read Only Memory EEPROM Digital Signal Processing DSP Intermediate Frequency IF International Portable User Identity IPUI Global System for Mobile Communications GSM Gener...

Page 6: ...re RMS Receiving Loudness Rating RLR Radio Frequency RF Sending Loudness Rating SLR Subscriber Identity Module SIM Surface Acoustic Wave SAW Real Time Clock RTC Travel Adapter TA Side Tone Masking Rating STMR Pseudo SRAM PSRAM Static Random Access Memory SRAM Voltage Controlled Oscillator VCO Universal Asynchronous Receiver Transmitter UART Time Division Multiple Access TDMA Time Division Duplex T...

Page 7: ... by time Up to 500 hours Paging Period 5 RSSI 85 dBm Charging time Approx 3hours RX Sensitivity GSM EGSM 109dBm DCS 109dBm GSM EGSM 32 5dBm Level 5 TX output power GSM EGSM 32 5dBm 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 GPRS compatibility Class 12 Status Indicator Send Key End Key Cancel Key Volume Up Down Key PWR Lock Key ANT Internal...

Page 8: ... and service purposes 2 PERFORMANCE 2 SYSTEM SPECIFICATION S k R i 18 12Φ S k R i Item Feature Comment Travel Adapter Yes Speaker Receiver 18x12Φ Speaker Receiver MIDI SW MIDI Mono SPK Camera 2 0M FF Bluetooth FM Radio Bluetooth version 2 1 Wired FM radio Earphone needed ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ VX ...

Page 9: ...egrees Peak 20 degrees 3 Frequency Error 0 1 ppm Level Power Toler Level Power Toler GSM850 EGSM 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 5 33dBm 2dB 13 17dBm 3dB 4 Power Level 10 23dBm 3dB 18 7dBm 5dB 11 21dBm 3dB 19 5dBm 5dB 12 19dBm 3dB Level Power Toler Level Power Toler DCS PCS 1 28dBm 3dB 9 12dBm 4d...

Page 10: ...0 EGSM 400 60 600 1 200 60 1 200 1 800 60 1 800 3 000 63 3 000 6 000 65 6 000 71 5 Output RF Spectrum due to modulation 6 000 71 Offset from Carrier kHz Max dBc 100 0 5 200 30 DCS PCS 250 33 400 60 600 1 200 60 1 200 1 800 60 1 800 3 000 65 3 000 6 000 65 3 000 6 000 65 6 000 73 6 Output RF Spectrum due to switching transient GSM850 EGSM Offset from Carrier kHz Max dBm 400 19 600 21 ͽ Ͷ ͺΟΥΖΣΟΒΝ Ά...

Page 11: ...fset from Carrier kHz Max dBm 400 22 600 24 1 200 24 DCS PCS 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 Cl II 2 439 100 dB BER Class II 2 439 100 dBm 9 RX Level Report Accuracy 3 dB 10 SLR 12 3 dB Frequency Hz Max dB Min dB 100 12 11 Sending Response 300 12 1 000 6 2 000 6 3 000 6 200 0 0 4 4 0 4 000 3 400 9 0 4 12 ...

Page 12: ...n that Adopt a straight line in between 300 Hz and 1 000 Hz to be Max level in the range 14 STMR 17 dB 15 Stability Margin 6 dB dB to ARL dB Level Ratio dB 35 30 17 5 22 5 20 10 0 7 10 30 7 33 3 33 7 31 7 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 ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XZVX 20 Ringer Volume At least...

Page 13: ...lor Green Æ Red Battery Bar Status Percent Full 16 level Decrease gradually 94 10 23 Battery Indicator 94 10 Battery icon color Green Æ Red Empty 0 level 24 Low Voltage Warning Blinking Bar 10 5 2times standby Speaker 10 at every 1min call Receiver 25 Forced shut down 0 about 3 35V 10 2 25 Voltage 0 about 3 35V 27 Battery Type Lithium Ion Battery Standard Voltage 3 7 V Battery full charge voltage ...

Page 14: ... Stereo Headset Earpiece Charge Pump negative voltage for bipolar audio out VMMC VANA LPMU VUSB LAUX Charge DC DC Buck Vibrator 64 bit bus 32 bit bus IF GMSK DAC SD PLL FEM 32 kHz XO DSP ADC PA c s i M Low Power DCXO RF PMU USB 2 0 FS CIF DCC Keypad 4k 7 0 15 5 1 8V 2 5V VCHARGE 4 5 V 20V 2 T A B V N E S N E S P E S N E S S C C S B G H C D D V T N H S V BC 847 S 1 2 6 4 5 3 for example ZXTP 25020 ...

Page 15: ...Baseband DSP 156 MHz TeakLite MCU ARM1176 208 MHz 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 l 12 RX TX CS1 CS4 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 ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ X VX Secure Boot RSA ROM SHA 1 HW accel OCDS disabling Certificate M...

Page 16: ...1 8V support Flash RAM NOR Type NAND Type 1 bit ECC supported Parallel Flash Cellular RAM Page Burst Mode Parallel Flash Cellular RAM Page Burst Mode 16 bit AD multiplexed 16 bit AAD multiplexed iNAND Type e g oneNAND SDRAM DDR SDRAM up to 4 Gbit SDR SDRAM up to 1 Gbit M d 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 ...

Page 17: ...gital microphone supported Differential microphone inputs 3 1 7 FM Radio Integrated FM radio FM Stereo RDS Receiver Sensitivity 2 μV 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 protection Start up o...

Page 18: ... FM synthesizer AMR WB ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ X VX True ring tones MP3 MP3 eAAC G 722 SB ADPCM encoding decoding 3 1 10 Camera 3 Mpx YUV parallel interface HW JPEG encoder 39 Mpx sec 39 MHz Pixel Rate 15 fps 3 Mpx full resolution 3 TECHNICAL BRIEF 3 1 9 Main LCD Display Type 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 ...

Page 19: ...e efficiency of the DC DC converter is optimized for an average load current of 100mA That is the load current estimated for the GSM talk mode ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ YWVX 3 2 Power Management A mobile platform requires power supplies for different functions These power supplies are generated in the 3 TECHNICAL BRIEF integrated power management Unit PMU The PMU is designed to deliver the power for a ...

Page 20: ... 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 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 L...

Page 21: ...L BRIEF 21 LGE Internal Use Only Copyright 2012 LG Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF Table 3 2 1 Power supply Domains without RF ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ YYVX ...

Page 22: ...up procedure if a switch on event like first connect on key wake up or charge detect occurs PMU main State Machine The main PMU state machine is always connected to VPMU also The 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...

Page 23: ... uses either the charger voltage VDD_CHARGE or VDDRTC as input voltage The input voltage is selected automatically by a bulk switch circuit LADC the ADC and the oscillator are enabled on request for every battery measurement if the charger unit is not running This is handled by an ADC control block in one of the state machines If the charger unit is running the ADC is controlled by the charger sta...

Page 24: ...FF set reset_pmufsm_n_o switch o PMU power region LPMU to ULPM sm1_goto_syso reset_pmufsm_n_o go to state PMU SM1 SYSOFF HPBG on start HPBG in fast settie mode default trim value LPMU low power mode wait for HPBG timer 2ms System SHUTDOWN reset_pmu_n 0 all LDOs o not LRTC LPMU HPBG o DCXO o Check Battery enble battery periodic supervision switch HPBG to active mode SYSONLEV or VBAT SYSONPRE if pre...

Page 25: ...U registers so it can be used as a functional key during phone operation also 3 2 4 Switching on due to RTC alarm The real time clock can generate a wakeup signal called RTC alarm This signal is sampled from the state machine and after successfully detecting a high the system is switched on 3 2 5 Switching on due to charging When a battery with a voltage below the SSONLEV level is inserted the sta...

Page 26: ... the charger watchdog for safety 3 2 6 Power Supply Start up sequence In order to avoid an excessive drop on the battery voltage caused by in rush current during system power on possibly leading to system instability and hick 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 ...

Page 27: ...CAL BRIEF Figure 3 2 3 Start Up Sequence triggered by First Connect Event ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ Y_VX rf_sysclk_en reset_pmu_n pad_isolation_n System OFF System ON LCORE SD1 check battery continue if battery voitage is ok HPBG reset_pmufsm_n_o PMU_CLK LPMU VRTC lpmu_pd LPBG VBAT LPM ES1 ULPM LPM Battery in start up because of first connect event ...

Page 28: ... the reset_postscu_n_o signal This signal controls for example the μC 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 μC reset will ...

Page 29: ...d 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_enable ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ ZWVX resetout_o reset_postscu_n_o reset_pmu_n_o ...

Page 30: ...e Reset A f d ff PMU i Th PMU i i h h f 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 state of the PMU state machine see chapter switch OFF A software reset does not affect any PMU register The PMU register are reset with the reset_pmufsm_n_o signal That means all PMU register are reset in OFF state For d...

Page 31: ...ry measurements triggered by the PMU It is off otherwise 3 2 12 System Sleep Mode y p The sleep mode is controlled by using the VCXO_enable signal This signal is used to switch the LDO s and the DC DC converter SD1 in a programmable way into its low power mode PFM In addition DC DC converter SD1 can be configured to change the output voltage to a lower value for additional power saving VCXO_enable...

Page 32: ...the SHUTDOWN state The reset_pmu_n_o signal changes to low the I O pads are isolated using the padisolation_n signal the LCORE LDO and the SD1 DC DC converter are switched off the LPMU LDO is switched to ultra low power mode the DCXO is turned off and the bandgap buffer is disabled Before switching OFF the software shall have enabled the 32 kHz oscillator and has switched the PMU clock to the 32 k...

Page 33: ...r Module SKY77550 21 U101 3 TECHNICAL BRIEF 3 3 1 Internal Block Diagram Figure 3 3 1 SKY77550 21 FUNCTIONAL BLOCK DIAGRAM 3 3 2 General Description ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ Z VX TX_HB_IN 10 VBATT 3 VBATT 4 VRAMP 16 TxEN 18 BS 12 VSW_EN 11 Tx_LB_IN 9 HBT POWER AMPLIFIER CURRENT SENSE POWER AMPLIFIER CONTROL LOGIC DECODER Match Match SKY77550 21 21 RX2 26 ANT 19 RX1 201643_001 ...

Page 34: ...N G T N A 1 1 D N G 2 1 D N G 3 1 D N G D N G P L105 0 5p 0 L101 FL101 10 5 8 3 7 2 6 4 9 1 U_P_1960 B_P_1960 1842_5MHz_2 U_P_1842_5 B_P_942_5 881_5MHz_1 GND1 B_P_942_5 881_5MHz_2 GND2 B_P_1960 1842_5MHz_1 GND3 GND4 942_5MHz 881_5MHz C111 DNI L111 10n 10n L114 L109 0 75p 0 5p C114 4 0 1 L n 8 1 SW101 4 3 2 1 ANT COMMON G3 G4 DNI L138 DNI L139 C116 39p 39p C115 39p C117 C108 33u DNI L108 C107 15p C...

Page 35: ...ed output signals FSYS1 and FSYS2 Figure 3 4 2 Digital PREDISTORTION with LUXO The DCXO tuning characteristic should be a first order linear function of the programming word AFC The variable capacitance array is a first order linear function of the digital word DIG which leads to a nonlinear curve ppm vs DIG and also a nonlinear ppm vs AFC for DIG AFC In order to linearize the ppm vs AFC curve the...

Page 36: ...re 3 5 1 Block DIAGRAM of RF Subsystem 3 5 1 GENERAL DESCRIPTION The PMB8815 RF subsystem is designed for dual band GSM voice and data applications GPRS class 12 The g y 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 ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ Z VX 3 5 RF Subsystem of PMB8815 U201 ...

Page 37: ...se 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 p y pp p g 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 analog to digital converter The fil...

Page 38: ... modulation loop to process the phase frequency signal The 26 MHz reference signal of the phase detector incorporated in the PLL is provided by the reference oscillator 3 TECHNICAL BRIEF 3 5 2 2Transmitter The GMSK transmitter supports power class 4 for GSM850 or GSM900 as well as power class 1 for DCS1800 or PCS1900 The digital transmitter architecture is based on a fractional N sigma delta synth...

Page 39: ...A 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 power amplifiers is achieved by the implemented bias DAC amplifiers is achieved by the implemented bias DAC Fi 3 5 4 PA AND FEM CONTROL BLOCK DIAGRAM Figure 3 5 4 PA AND FEM CONTROL BLOCK DIAGRAM ...

Page 40: ... 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 circuits Figure 3 5 5 POWER SUPPLY BLOCK DIAGRAM ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XVX Figure 3 5 5 POW...

Page 41: ...data is erased The device contains 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 pos...

Page 42: ...Multi block erase time 2 blocks 3 5ms Typ SEQURITY OTP area Sreial number unique ID Hardware program erase disabled during 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 ...

Page 43: ...r 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 CAS Latency Programmable CAS latency 2 or 3 supported Burst Length Programmable burst length 2 4 8 with both sequential and interleave mode ͽ Ͷ ͺΟΥΖΣ...

Page 44: ... 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 quality of...

Page 45: ...quires for meeting Bluetooth and regulatory harmonic and spurious requirements For integrated mobile handset applications where Bluetooth is integrated next q g pp g 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 design the PA can transmit 12 dBm for Basi...

Page 46: ...2 EUSY0186504 6 5 7 4 8 3 9 2 10 1 C C V 2B1 1 B 1 2A 1A S2 S1 0 B 2 1B0 D N G 2V85_VSIM R325 100K 100K R324 C322 1u 10K R323 2V85_VSIM I N D 7 2 3 R SIM_DATA SIM_RST_SEL SIM_SEL SIM_DATA_1 SIM_DATA_2 SIM_RST_2 3 8 SIM Card Interface The Main Base Band Processor XMM215 provides SIM Interface Module The XMM215 checks status Periodically During established call mode whether SIM card is inserted or n...

Page 47: ...ded 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 ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ _VX 3 9 LCD Interface VA601 1u C607 18p 1u C622 1 0 6 R 0 5 0 6 R 0 VBAT C603 2 2u TP603 100K R604 R602 DNI 6 0 6 R 0 DNI R603 TP602 VPA_2V85 VDD_IO_1V8 CN601 21...

Page 48: ...gure up to 64 steps of DAC is used 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 vo...

Page 49: ...ach 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 respectivel...

Page 50: ...ower 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 designed for powering up low voltage USB ͽ Ͷ ͺΟΥΖΣΟΒΝ ...

Page 51: ...connecting acoustic transducers to X GOLD 215 In audio in path the supply voltage generation for electret microphones a low noise amplifier and p pp y g g p p 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 can be considered to be organized in three sub blocks Interface to processor ...

Page 52: ...ter 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 digital filter output Thus the usab...

Page 53: ...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 11 3 Analog Part The analog part of the X GOLD 215 audio front end in audio out direction consists of...

Page 54: ...als earpiece driver can be used to drive a 16 Ω earpiece and works in differential The two single ended headset drivers can be used to drive a 16 Ω headset They 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 Ω loudspeaker As it is a class D amplifier the needed suppression of t...

Page 55: ... gain control a second order ΣΔ converter and a digital decimation filter It supports both standard GSM bandwidth 3 5 kH and ideband band idth 7 kH speech bands 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 rangin...

Page 56: ...on 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 consumption For normal operation the supply can be switc...

Page 57: ...or 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 of up scaling as well CIF All data is transmitted via the memory i...

Page 58: ...ynchronization 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 accura...

Page 59: ... 1 0 C617 7 5p 7 5p C620 7 0 6 A V 8 0 6 A V VCAM_DIG_1V8 VCAM_IO_1V8 VCAM_ANA_2V8 5 0 6 A V 4 0 6 A V R616 10 CN602 13 12 14 11 15 10 16 9 17 8 18 7 19 6 20 5 21 4 22 3 23 2 24 1 CAM_PCLK 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_DATA 0 CAM_F_DATA 7 I2C_SDA I2C_SCL CAM_PWDN CAM_RST_N F_CAM_VSYNC F_CAM_HSYNC Figure 3 12 Camera Connector ...

Page 60: ...analog interface circuit for a human interface touch screen device All of touch functions are composed of a register based architecture and are controlled through the internal register sets by serial interface Figure 3 14 Touch Driver Block Diagram Figure 3 14 Touch Driver Block Diagram MMS 100 Series are composed of a 32 bit ARM processor a wakeup interrupt controller WIC a 32 Kbytes flash memory...

Page 62: ...OTING 4 1 RF Component 4 TROUBLE SHOOTING U201 U301 X201 i U101 U301 Memory 2G NAND 1G SDRAM H9DA2GH1GHMMMR 46M U201 Main Chip A GOLD RADIO NAND PMB8815 Figure 4 1 PMB8815 U101 GPRS QUAD TX DUAL RX MODULE SKY77550 21 X201 Crystal 26MHz Clock TSX 3225 RF Switch ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ VX SW101 RF Switch MS 156C 4 1 RF Component U201 U301 X201 U101 SW101 ...

Page 63: ...reserved Only for training and service purposes 4 2 RX Trouble START 1 Check Crystal Circuit Re download or Do calibration again 2 Check Mobile SW TX module 3 Check PLL Control HP8960 Test mode 62 CH 7 level setting TCH 62CH 60dBm setting BCCH Spectrum analyzer setting Oscilloscope setting ...

Page 64: ...2 HOT2 HOT1 GND1 R213 0 2V85_VSIM 0 1u C225 G5 F2 F3 F1 D2 D1 E2 M10 A13 B13 K14 K13 B4 A5 B5 A4 J10 USIF2_CTS_N 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_UART_RX UART_RX SPI_INT SIM_RST_N Connect GND plane directly Close to the 26MHz...

Page 65: ... RSVD TxEN VRAMP GND8 9 D N G 0 1 D N G T N A 1 1 D N G 2 1 D N G 3 1 D N G D N G P L105 0 5p 0 L101 FL101 10 5 8 3 7 2 6 4 9 1 U_P_1960 B_P_1960 1842_5MHz_2 U_P_1842_5 B_P_942_5 881_5MHz_1 GND1 B_P_942_5 881_5MHz_2 GND2 B_P_1960 1842_5MHz_1 GND3 GND4 942_5MHz 881_5MHz C111 DNI L111 10n 10n L114 L109 0 75p 0 5p C114 4 0 1 L n 8 1 SW101 4 3 2 1 ANT COMMON G3 G4 DNI L138 DNI L139 C116 39p 39p C115 3...

Page 66: ...0 No Check TP4 of U101 Check PMB8815 U201 GpCtrl1 GpCtrl0 Tx Enable OK Yes Replace TX Module U101 TP2 High Band TP3 Low Band Signal is OK No Yes Mobile SW TX Module is OK Yes EGSM Rx EGSM Rx ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ WVX CheckTP1 of SW101 TP1 Signal is OK Replace Mobile SW SW101 No Yes Mobile SW TX Module is OK Control Signal is RF_ANT_SEL 0 RF_ANT_SEL 1 RF_TX_EN OK Check PMB8815 U201 No Yes TP2 High B...

Page 67: ...nics Inc All right reserved Only for training and service purposes Figure 4 1 4 3 Power On Trouble U201 VMMC_2V85 TP01 C205 VPMU TP02 C203 VCORE TP03 C207 VDDTDC TP08 C212 VDDXO TP09 C211 VDDMS TP10 C213 VDDTRX TP07 C208 VRF1 TP06 C214 VDDRF2 TP05 C210 VPA_2V85 TP04 C204 ...

Page 68: ...DDXO VBAT L201 3 3u R204 100K VDDMS VCORE 470 R202 VDD_IO_1V8 C220 1u VBACKUP_BAT VDDTDC VDD_IO_1V8 VDD_IO_1V8 VCORE 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 3 A 1 1 T 2 1 P 8 H 6 P 6 F 9 K 1 1 G 0 1 N 8 1 P 3 1 L 6 1 L 9 R 9 T 8 T 9 P N3 N5 R5 A_D0...

Page 69: ...it work properly Replace the main board No Is the phone power on Replace U201 and Re download software No Yes Yes Push power on key And check the level change into high of POWERKEY Yes Check the contact of power key Or dome switch No Check the voltage of The LDO outputs at U201 Replace U201 No VCORE TP03 1 2V VPMU TP02 1 2V VDDMS TP10 1 3V VPA TP04 2 85V VMMC_2V85 TP01 2 85V VDDRF2 TP05 2 5V VDDXO...

Page 70: ...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 C418 DNI R410 2 2K 10K R402 4 1 4 C u 1 1u C412 FB401 1800 R405 10 R401 47K R406 10 u 1 3 1 4 C VDD_IO_1V8 VBAT VDD_IO_1V8 VUSB_CHG_IN C411 1u USB_DP USB_DM UART_TX MUIC_ACC_ID UART_RX VUSB_LDO_4V9 I2C_SDA I2C_SCL MUIC_IO_P MUIC_IO_M MUIC_INT_N Connected to CN401 1 pin TP01 TP1 Figure 4 5 4 4 Char...

Page 71: ...oses START Battery is charged Charging is properly operating No Yes Charging is properly operating Battery is charged Replace the main board No Yes Yes Is I O Connector CN401 well soldered Yes Resolder the CN401 Pin 1 VBUS_USB No Check the voltage at TP1 Charging IC U401 5 1V TheTA is out of order Change theTA No Change the battery ...

Page 72: ... 72 LGE Internal Use Only Copyright 2012 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING Figure 4 6 4 5 Vibrator Trouble Vibrator PAD VB401 R408 TP1 ...

Page 73: ... 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 A D S _ C 2 I F F O N O X202 NX3215SA 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 S C _ I P S D I _ D C L 2 T U O _ Y E K N _ T E S E R P _ B I V VDDP_DIG1 1 T N I E 6 T N I E 0 T N I E 0 T N I...

Page 74: ...poses 4 TROUBLE SHOOTING SETTING Enter the engineering mode and set vibrator on at vibration of BB test menu START Check the soldering of vibrator Resolder the Pad No Yes Replace vibrator Yes Yes Check theTP1 Is PWM Signal OK Yes Replace U201 No Is the voltage atVB401 high Replace the Pad No Vibrator Working well ...

Page 75: ...ht reserved Only for training and service purposes Figure 4 7 4 6 LCD Trouble LCD_F_DATA 7 LCD_F_DATA 6 LCD_F_DATA 5 LCD_F_DATA 4 LCD_F_DATA 3 LCD_F_DATA 2 LCD_F_DATA 1 LCD_F_DATA 0 TP7 TP6 LCD_VSYNC_OUT 4th PIN LCD_F_WR_N 5th PIN LCD_F_CS_N 8th PIN LCD_F_RS 9th PIN TP4 TP1 TP2 TP3 TP5 ...

Page 76: ...604 R602 DNI 6 0 6 R 0 DNI R603 TP602 VPA_2V85 VDD_IO_1V8 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 6 36 5 37 4 38 3 39 2 40 1 1u C606 LCD_LED_CA5 LCD_LED_CA4 LCD_LED_CA3 LCD_LED_CA2 LCD_LED_CA1 LCD_PWM LCD_VSYNC_OUT LCD_F_DATA 2 LCD_F_DATA 3 LCD_F_DATA 1 LCD_F_DATA 0 LCD_F_DATA 7 LCD_F_DATA 5 LCD_F_DATA 4 LCD_F_WR_N LCD_F_CS_N LCD_F_RS LCD_F_DATA 6 ...

Page 77: ...ight 2012 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING LCD_BL_CTRL Graph 4 7 1 LCD Backlight Control Signal Waveform LCD_RS LCD_CS LCD WR LCD_WR ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ _ VX Graph 4 7 2 LCD Data Waveform ...

Page 78: ...f CN601 with LCD connector ok Reassemble LCD connector No LCD working well Does LCD work properly Replace LCD module No Yes Yes Check theVoltage Level of MLED1 TP1 5 are about Battery voltage LCD BL Ctrl TP7 signal is high Level Yes Resoldering or Replace U601 No Check theWaveform of EMI filter FL601 FL602 FL603 TP606 Resoldering EMI filter FL601 FL602 FL603 No ...

Page 79: ...Electronics Inc All right reserved Only for training and service purposes 4 7 Camera Trouble CAM_F_DATA 7 CAM_F_DATA 6 CAM_F_DATA 5 CAM_F_DATA 4 CAM_F_DATA 3 TP04 C614 TP05 C613 TP06 C612 TP09 VA606 DNI TP03 C619 TP02 C608 TP01 C609 TP07 R211 TP08 R212 Figure 4 8 ...

Page 80: ...8 0 6 A V VCAM_DIG_1V8 VCAM_IO_1V8 VCAM_ANA_2V8 5 0 6 A V 4 0 6 A V R616 10 CN602 13 12 14 11 15 10 16 9 17 8 18 7 19 6 20 5 21 4 22 3 23 2 24 1 CAM_PCLK 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_DATA 0 CAM_F_DATA 7 I2C_SDA I2C_SCL CAM_PWDN CAM_RST_N F_CAM_VSYNC F_CAM_HSYNC TP6 TP5 TP4 1n C230 47p C233 47p C235 47p C234 47p C232 C231 1n 220n C236 ...

Page 81: ...right reserved Only for training and service purposes Graph 4 8 1 I2C Data Waveform CAM_MCLK CAM_RESET I2C_DATA CAM_MCLK 26MHz Graph 4 8 2 MCLK Waveform CAM_VSYNC CAM_HSYNC CAM_HSYNC CAM_PCLK_26MHz Graph 4 8 4 CAM_HSYNC vs CAM_PCLK Waveform Graph 4 8 3 CAM_VSYNC vs CAM_HSYNC Waveform ...

Page 82: ...l ofTP4 2 8V andTP5 TP6 1 8V is right LED_PWM signal is high Level Resoldering or Replace U601 No Yes Camera working well Does Camera work properly Replace U201 or Change the board No Yes Yes Check theWaveform of I2C_CLK TP7 I2C_DATA TP8 CAM_MCLK 26MHz Yes Replace U201 or Change the board No Check theWaveform of Data pins on U602 Resoldering or Replace Camera Module No ...

Page 83: ..._n BC1_n BC2_n BC3_n SDCLKO BFCLKO_0 BFCLKO_1 CKE ANAMON FSYS_EN EPN EPP HSL HSR LSN LSP DDR_CAS_N DDR_RAS_N DDR_DQS 1 DDR_DQS 0 DDR_DQM 0 DDR_DQM 1 BT_CLK_REQ SPK_HS_L SPK_HS_R DDR_CLK_P DDR_CKE DDR_CLK_N RCV_HS_N RCV_HS_P ABB VDDP_DIG1 VDDP_EBU BB Chip D501 L504 0 D502 39p C537 CN501 EAB62429501 2 1 C528 39p L505 0 DNI C530 SPK_P SPK_N TP5 TP6 4 8 Speaker Receiver Trouble M501 TP01 C507 TP02 C50...

Page 84: ...p 2 0 5 R 0 C518 2 2u C516 2 2u C519 2 2u C503 10u 2 2u C505 VBAT 0 1u C504 VDD_IO_1V8 HS_OUT_R HS_OUT_L HS_GND I2C_SDA I2C_SCL SPK_P SPK_N SPK_HS_L SPK_HS_R RCV_HS_N RCV_HS_P TP1 TP2 TP3 TP4 START Cal l Check the state of contact of receiver Replace Change Receiver Speaker No ReceiverWorking well Yes Yes Check the Audio signal C507 C508 C510 C515 TP01 04 Yes Change the U201 No Check the Audio sig...

Page 85: ...opyright 2012 LG Electronics Inc All right reserved Only for training and service purposes 4 9 Earphone Trouble M501 U201 BB chip C229 TP09 C228 TP08 C525 TP12 C521 TP11 R512 TP10 FB506 TP5 FB502 TP2 FB507 TP3 FB501 TP1 FB503 TP4 C515 TP7 C510 TP6 ...

Page 86: ...O_1 CKE ANAMON FSYS_EN EPN EPP HSL HSR LSN LSP DDR_CAS_N DDR_RAS_N DDR_DQS 1 DDR_DQS 0 DDR_DQM 0 DDR_DQM 1 BT_CLK_REQ SPK_HS_L SPK_HS_R DDR_CLK_P DDR_CKE DDR_CLK_N RCV_HS_N RCV_HS_P ABB VDDP_DIG1 VDDP_EBU U201 BB Chip TP8 C228 TP9 C229 Q501 KTJ6131V 1 3 2 G D S 4 7 R507 R506 4 7 C506 560p 560p C509 U502 NCS2200SQ2T2G 2 3 1 4 5 VCC VIN OUT VIN GND 5 2 5 R M 1 6 2 5 R K 0 2 2 47 R527 C541 120p 8 2 5...

Page 87: ...t of the test equipment to PRBS or Continuous wave mode No Resolder J501 Can you hear the sound from the earphone Yes No Can you hear your voice from the earphone Change the earphone and try again Resolder FB501 TP01 FB502 TP02 FB507 TP03 FB503 TP04 FB506 TP05 C510 TP06 C515 TP07 No Change the earphone and try again Can you hear your voice from the earphone No Resolder C228 TP08 C229 TP09 R512 TP1...

Page 88: ..._n BC0_n BC1_n BC2_n 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 2 2K R212 R211 2 2K HS_MIC_N PWRON HS_MIC_P MAIN_MIC_P DDR_CAS_N DDR_RAS_N DDR_DQS 1 DDR_DQS 0 DDR_DQM 0 DDR_DQM 1 NAND_BSY_N NAND_CS_N BT_CLK_REQ HS_JACK_DET SPK_HS_L SPK_HS_R NAND_DDR_WE_N DDR_CLK_P NAND_WP_N DDR_CKE NAND_ALE_N NAND_RE_N NAND_CLE_N DDR_C...

Page 89: ...EGSM900 DCS mode or GSM850 PCS mode START Make a phone call then check C230 TP1 mic bias comes from U201 1 Check mic Bias signal line 2 Change the U201 No Yes Microphone will work properly Check the signal Level at each side of MIC501 Is it a few tens mV AC Yes Change the microphone No Check the soldering of C532 C529 TP5 6 Re solder component No Check microphone sound hole Yes ...

Page 90: ...K MSD_D 1 MSD_D 0 MSD_CMD MSD_D 3 MSD_D 2 LCD_RST_N JTAG_TRST_N JTAG_TDI JTAG_TMS JTAG_TCK JTAG_TDO SIM_SEL SIM_RST_N Connect GND plane directly VDDP_SIM VDDP_MMC VDDP_DIG1 RF U201 TP1 C318 33p C323 33p C320 33p 33p C317 C316 33p 33p C315 2 0 3 D Z 7 1 3 R K 7 4 0 1u C321 S301 5000 12P 2_95D A1 R0 EAG63211701 C7 4 1 C1_1 5 1 C1 3 1 C3_1 C6 C2 C5 C5_1 C2_1 C3 C7_1 C6_1 6 1 6 D N G VPP2 I O2 CLK1 RS...

Page 91: ...V Change the SIM Card This phone supports 3V or 1 8V SIM card No SIM card is properly working Yes Yes IsVoltage at the pin 1 of S301 2 85V or 1 8V Yes Resolder S301 No Change the SIM Card And try again Does it work Properly Change the U102 No Voltage output ofVSIM LDO TP01 Is 2 85V redownload SW Does it work Properly No SIM card is properly working Yes Change the main board No ...

Page 92: ...309 51 R310 51 R311 51 R312 51 R313 51 3 0 3 R K 0 1 4 0 3 R K 0 1 5 0 3 R K 0 1 6 0 3 R K 0 1 1 0 3 D Z 1 0 3 A V 2 0 3 A V 4 0 3 A V 5 0 3 A V 470 R307 C310 1u 0 6 2 3 R VDD_IO_1V8 VMMC_2V85 R301 470K 6 0 3 A V CN301 14 13 12 11 10 8 7 6 5 4 3 2 1 9 SW1 SW2 3 1 3 A V DNI C311 I N D 4 1 3 R MSD_CLK MSD_DET_N MSD_D 1 MSD_D 0 MSD_CMD MSD_D 3 MSD_D 2 Micro_SD TP1 TP2 TP3 R301 TP2 VA313 TP3 C310 TP1 ...

Page 93: ...rved Only for training and service purposes START Micro SD Detect OK No Replace Micro SD Card Yes Yes Re download SW Check out MC_CLK Data Timing TP3 OK Re attach or Replace CN301 No uSD_DET R301 TP2 Is High No Check the C310 TP1 2 8V Change U201 No Yes Yes Micro SD Card will work properly Yes ...

Page 94: ... 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 TP701 VDD_IO_1V8 10p C704 C701 2 2u VPA_2V85 C703 10p C702 10n VDD_IO_1V8 10n C707 1K R705 TP707 TP711 TP708 TP706 TP709 2450MHz FL701 4 2 3 1 IN OUT GND1 GND2 2 2u C705 C710 100p TP710 TP702 TP703 TP704 TP705 FB701 600 CON_ANT_FEED CON_ANT_FEED BT_UART_TX BT_UART_RX BT_UART_RTS BT_UART_CTS BT_PCM_SYNC BT_PCM_OUT...

Page 95: ...BT Ant condition A condition is good Replace Ant701 No Yes BT will work properly A condition is good Yes Give the additory solder in TP3 4 C708 C709 R703 C714 No Check BiasVoltage VDD_IO_1V8 Replace U701 No Check condition of matching componentsTP3 4 C708 C709 Yes Yes Check RTC32K TP1 C711 Replace U701 No Yes Check BT_CLK_26M TP2 C713 Replace U701 No ...

Page 96: ... M4D M4 M1 M6 FB507 FB503 FB502 C502 27p VA501 1n C501 L501 100n R505 DNI 10 FB501 FB506 HS_GND FM_LNA_IN C502 TP1 L501 TP2 VA501 TP3 J 501 I N D 1 0 2 D Z R217 4 7K R214 24K 470n C240 C239 330p C242 470n C241 1u R215 270 5 1 R216 L202 22n Q202 2 1 3 FM_LNA_OUT FM_LNA_EN FM_LNA_IN FM Radio LNA To Main Chipset L202 TP04 ZD201 TP06 C242 TP05 Q202 Q202 VA501 TP3 L202 TP4 C502 TP1 L501 TP2 ZD201 TP6 C...

Page 97: ...k condition A condition is good Replace J501 No Yes FM_radio will work properly A condition is good Yes Give the additory solder in L501 C502 VA501 TP1 2 3 No Check condition of matching components L501 C502 VA501 TP1 2 3 Yes Yes A condition is good Replace Q202 No Yes Check BiasVoltage VDD_FMR C224 Replace U201 No Check BiasVoltage FM LNA LNA_EN_L202 TP 04 ...

Page 98: ...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 MICN1 MICP1 MICN2 MICP2 VMIC VUMIC ACD AGND VREF 2 2K R212 R211 2 2K HS_MIC_N PWRON HS_MIC_P MAIN_MIC_P 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 I2C_SDA I2C_SCL HS_JACK_DET MAIN_MIC_N VDDP_DIG1 1 T N I E 6 T N I E 0 T N I E 1 G I D _ P D D V TP2 TP3 4 0 4 A V C416 0 1u I N D 5 0 4 A V...

Page 99: ...oses START Yes Resolder CN404 or replace touch panel Check I2C signal of U201 R229 R230 TP3 4 Yes Resolder or Replace U201 No Check supply voltage of U402 C417 TP1 Check touch signal ZD402 405 TP5 8 Resolder or Replace U402 No Yes Check CN404 and touch panel contact Contact well CN404 and touch panel No Touch will work properly Yes ...

Page 100: ...and service purposes 4 TROUBLE SHOOTING 4 16 Memory trouble TP301 B2 K3 K2 K1 J4 A0 A1 A2 A3 A4 NANDD_DDRA 00 NANDD_DDRA 01 NANDD_DDRA 02 NANDD_DDRA 03 NANDD_DDRA 04 TP301 TP303 TP304 J1 G2 F2 H2 D3 F8 G8 CK CK CKE CS RAS CAS DDR_CAS_N DDR_RAS_N DDR_CLK_P DDR_CKE DDR_CLK_N DDR_CS_N TP304 TP301 TP304 ...

Page 101: ... LG Electronics Inc All right reserved Only for training and service purposes START CheckTP301 NANDD_DDRA 00 of U301 Yes Resolder or Replace U301 No CheckTest Point TP301TP304 CheckTP304 DDR_CS_N of U301 Resolder or Replace U301 No Yes Memory will work properly ...

Page 102: ...n 1 Cut 4 point of shield can that checked red quadrangle via nipper 2 Flowing iron through applying heat In same time lift a piece of shield can with a pincette 3 Separated shield can throw away Cut 4 points that checked red quadrangle Apply heat to shield can that removing part Shield can cut off Main board Remove Memory 1 Apply heat via heat gun 2 Pick up through pincette when complete melting ...

Page 103: ...n via pincette 3 Apply heat via heat gun 4 Be careful when using heat gun for not blowing up other parts 5 Find out shield can and soldering Ready to rework memory Soldering Memory IC Soldering shield can Attaching gold gasket and assemble 1 Attach gold gasket and remove vinyl through pincette 2 Assemble other parts that is disassembled before 3 Function test after finishing assemble Attach gold g...

Page 104: ...vice purposes 4 TROUBLE SHOOTING 4 17 Proximity Sensor on off Trouble Shooting 0 R521 9 3 5 C u 1 0 C534 1u VDD_IO_1V8 u 0 1 8 3 5 C U501 EUSY0376201 GP2AP002S00F 5 4 6 3 7 2 8 1 LEDA SCL LEDC SDA VCC VIO VOUT GND 3 3 5 C u 7 4 R522 10 VPROX_3V0 I2C_SDA I2C_SCL PROX_INT TP3 TP2 TP1 TP1 VA607 TP2 VA608 TP3 ...

Page 105: ...s worked as below Call connected Object moved at the sensor Control the screen s on off operation automatically START LCD OFF Change the Proximity Sensor U501 No Call Connected Object moved at Proximity Sensor Check I2C_SCL SDA PROX_INT Change the Main board No END Yes WorkWell Yes No Yes Measurement VREG_MSME_1 8V VREG_PROX_2 6V PROX_OUT PROX_I2C_SCL SDA ...

Page 106: ... Use Only Copyright 2012 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 T370 LG T370 ...

Page 107: ...5 DOWNLOAD 107 LGE Internal Use Only Copyright 2012 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 T370 LG T370 LG T370 ...

Page 115: ...5 DOWNLOAD 115 LGE Internal Use Only Copyright 2012 LG Electronics Inc All right reserved Only for training and service purposes LG T370 LG T370 LG T370 LG T370 LG T370 LG T370 LG T370 LG T370 LG T370 ...

Page 119: ...46A4 6 6 7 46 65 465 5 5 5 241 A 06 2TQZKOKV 5GPUQT 75 0 0 A 4 4A 4A 3 4A 35 4A A0 4A A2 4A4 5A0 4A 5A0 4A 5A0 4A 6 7 Z 2 4 0 0 0 75 6A7 46A 65 465 6A456A0 6A9 72 6A2 A176 6A2 A 0 6A2 A 6A2 A5 0 GOQT 0 0 4 CPF 2CUU KNNVGT 6 A6 10 0 0 A 4A9 A0 0 0 A A0 0 0 A 5A0 0 0 A A0 0 0 A92A0 0 0 A 5 A0 0 0 A4 A0 0 66 4 75 6 6 2 9 7 5GRGTCV QT 8 6 94 A6 46 A 4 A59A 64 A 6 4 A59A 64 A4 6 52 A 51 52 A 06 52 5 6 ...

Page 120: ... 10 5 8 3 7 2 6 4 9 1 U_P_1960 B_P_1960 1842_5MHz_2 U_P_1842_5 B_P_942_5 881_5MHz_1 GND1 B_P_942_5 881_5MHz_2 GND2 B_P_1960 1842_5MHz_1 GND3 GND4 942_5MHz 881_5MHz C111 DNI HJ ICT 03Y ANT102 FEED HJ ICT 03Y ANT101 FEED L111 10n 10n L114 L109 0 75p 0 5p C114 4 0 1 L n 8 1 SW101 4 3 2 1 ANT COMMON G3 G4 DNI L138 DNI L139 C116 39p 39p C115 39p C117 C108 33u DNI L108 C107 15p C102 33p C104 DNI C101 33...

Page 121: ... HSR LSN LSP MICN1 MICP1 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 ...

Page 122: ...N 0 1 A 1 A 1 C N 6 2 C N 8 2 C N 9 2 C N VDD1 VDD2 VDD3 VDD5 VDD4 VDD6 VDDQ1 VDDQ6 VDDQ5 VDDQ4 VDDQ10 VDDQ9 VDDQ2 VDDQ8 VDDQ7 VDDQ3 NC27 NC20 NC21 NC9 NC19 NC8 NC11 NC12 NC17 NC18 NC7 NC16 NC25 NC6 NC10 NC5 NC13 NC14 NC4 NC2 NC24 NC22 NC23 A13 NC3 VCC1 VCC2 VSS1 VSS4 VSS8 VSSQ5 VSSQ4 VSSQ9 VSSQ8 VSSQ3 VSS2 VSS3 VSSQ10 VSSQ1 VSSQ2 VSS5 VSSQ6 VSSQ7 VSS6 VSS7 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A1...

Page 123: ... R410 2 2K ZD402 10K R402 4 1 4 C u 1 C410 22pF VB401 2 1 1u C412 CN404 3 2 1 FB401 1800 2 2u C409 VA403 C402 22pF ZD404 VTOUCH_3V0 K 7 4 2 1 4 R R407 10 VDD_IO_1V8 VA401 ZD403 VBAT VUSB_CHG_IN R405 10 680 R421 CN405 4 3 2 1 R403 51K R409 100K VA407 R419 680 VDD_IO_1V8 VA409 VA408 6 8K R413 C415 0 1u VA402 VBACKUP_BAT 680 R420 FL401 IN OUT GND1 GND2 C408 10n R401 47K R406 10 u 1 3 1 4 C VDD_IO_1V8...

Page 124: ... 2u 39pF C531 1n C501 R523 DNI C534 1u VDD_IO_1V8 C514 39p u 0 1 8 3 5 C CN501 EAB62429501 2 1 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 C513 39p 2 0 5 R 0 U501 EUSY0376201 GP2AP002S00F 5 4 6 3 7 2 8 1 LEDA SCL LEDC SDA VCC VIO VOUT GND 39p C527 C518 2 2u 0 2 5 R...

Page 125: ...V 0 R609 4 0 6 A V DNI R603 2 2u C610 VA602 TP602 R616 10 VPA_2V85 VDD_IO_1V8 CN602 13 12 14 11 15 10 16 9 17 8 18 7 19 6 20 5 21 4 22 3 23 2 24 1 C604 1u C605 2 2u VCAM_ANA_2V8 1u C608 1u C609 C611 1u 1u C601 C602 1u VBAT 100K R611 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 6 36 5 37 4 38 3 39 2 40 1 1u C606 CAM_DATA 0 CAM_DATA 1 CAM_DATA 2 CAM_DATA ...

Page 126: ...IO_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 TP701 VDD_IO_1V8 10p C704 C701 2 2u VPA_2V85 C703 10p C702 10n VDD_IO_1V8 10n C707 1K R705 TP707 TP711 TP708 TP706 TP709 2450MHz FL701 4 2 3 1 IN OUT GND1 GND2 2 2u C705 TP710 TP702 TP703 TP704 TP705 ANT701 FB701 600 CON_ANT_FEED CON_ANT_FEED GND CON_ANT_FEED CON_ANT_FEED BT_UART_TX BT_UART_RX BT_UART_RTS...

Page 127: ...ight 2012 LG Electronics Inc All right reserved Only for training and service purposes 8 BGA PIN MAP 3 1 0 3 7RS 9LHZ SLQ FKHFN 8 ؼ DOO LDJUDP 7RS 9LHZ 30 2 5 2 ͿΠΥ ΚΟ ΦΤΖ BGA IC pin check U201 Ball Diagram Top View PMB8815 A GOLDRADIO not in use ...

Page 128: ...opyright 2012 LG Electronics Inc All right reserved Only for training and service purposes 8 BGA PIN MAP SLQ FKHFN 8 ؼ DOO LDJUDP 7RS 9LHZ 0005 0 ͿΠΥ ΚΟ ΦΤΖ not in use BGA IC pin check U301 Ball Diagram Top View H9DA2GH1GHMMMR 46M ...

Page 129: ... L103 C411 1 0 3 A V C538 R522 L504 D501 0 3 5 C 4 3 5 C C528 D502 6 0 2 C 5 2 2 C 3 1 2 R 3 0 2 C C205 C201 C237 C229 C228 C238 R210 R209 9 1 2 C 1 0 1 L 4 0 1 C 2 0 1 C 8 0 1 C 7 0 1 C 6 0 1 C TP205 TP206 TP207 R307 R301 4 1 3 R 8 0 3 R 2 0 3 R C311 6 0 3 A V R311 3 0 3 R 1 0 3 D Z 0 1 3 R 4 0 3 R 9 0 3 R 2 0 3 A V VA313 6 0 3 R 3 1 3 R 2 1 3 R 5 0 3 R 5 0 3 A V 4 0 3 A V 4 0 1 R 6 1 1 C 0 1 4 R...

Page 130: ... 6 0 5 B F 9 0 3 A V 0 1 3 A V 1 0 5 D Z C525 C509 6 0 5 C 3 0 5 B F 7 0 5 R R506 C523 C242 3 1 5 C R513 4 1 5 C C517 0 1 5 C 8 0 5 C 8 0 5 R 9 0 5 R 7 0 5 C 5 1 5 C 1 0 5 M 6 2 5 R 1 0 7 B F 2 0 5 U R525 C706 5 0 7 R TP710 TP705 7 0 7 P T 9 0 7 P T TP708 TP706 C713 TP702 1 0 7 P T 1 0 6 L F 1 0 6 A V R603 1 2 6 C R602 0 1 6 R 3 0 6 L F C606 R605 C607 R606 R604 C603 TP603 ANT102 C112 1 0 3 N C C50...

Page 131: ... Test Mode 1 2 2 OnOff Test 1 2 3 Headset Test 1 2 4 BT Test1 1 2 5 BT Test2 2 Model Version 1 2 6 Xhtml Compose Print 2 1 Version 1 2 7 Xhtml Print Test 3 Eng Mode 3 1 Cell environ 3 2 PS Layer Info 3 2 1 Mobility 3 2 2 RadioRes 3 3 Layer1 Info 3 4 Reset Information 3 5 Memory 3o n6f i gMuermarGioennConf 3 7 MemAllUse 3 8 MemDetUse 3 9 MemDump 3 10 Change Frequency Band 4 Call Timer 5 Factory Res...

Page 132: ...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 10 2 Setting Method ྙ ԙ Ԛ 1 Set COM Port 2 Check PC Bau Rate ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XZWVX 2 Check PC Bau Rate 3 Confirm EEPROM Delta file prefix name 4 Click U...

Page 133: ...training and service purposes 10 STAND ALONE TEST u Gj ԛ j ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XZXVX 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 134: ... TEST 10 STAND ALONE TEST ԝ ԝ Ԝ j ˈ ˉ 10 3 Tx Test Ԙ 1 Non signaling mode bar and then confirm OK text in the command line ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XZYVX 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 ...

Page 135: ...E TEST ԙ ԛ ԙ Ԛ 10 4 Rx Test 10 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 ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XZZVX 11 4 Rx Test ...

Page 136: ... 136 LGE Internal Use Only Copyright 2012 LG Electronics Inc All right reserved Only for training and service purposes 11 STAND ALONE TEST 10 STAND ALONE TEST ԛ Ԝ j ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XZ VX ...

Page 137: ...is the PC side Calibration 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 11 2 Tachyon Directory ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XZ VX 12 1 Overview 12 2 Tac...

Page 138: ...l right reserved Only for training and service purposes 12 AUTO CALIBRATION LGT370 LGT370 11 AUTO CALIBRATION 11 3 Test Equipment Setup 1 Turn on the Phone 2 LGE Tachyon Tachyon exe 11 4 Procedure ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XZ VX 12 3 Test Equipment Setup 12 4 Procedure ...

Page 139: ...rnal Use Only Copyright 2012 LG Electronics Inc All right reserved Only for training and service purposes 12 AUTO CALIBRATION 11 AUTO CALIBRATION 3 Tachyon Login NKEM 4 Tachyon Main ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XZ VX LGT370 ...

Page 140: ...right 2012 LG Electronics Inc All right reserved Only for training and service purposes 12 AUTO CALIBRATION 11 AUTO CALIBRATION 5 Tachyon Loss Setting ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XZ_VX lgT370 gms lgT370 gms lgT370 gms lgT370 gms lgT370 gms ...

Page 141: ...70 11 AUTO CALIBRATION 6 Tachyon Setting 1 Tachyon Main UI 1 Tachyon Main UI 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 ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XZ VX 9 Show Result Window 10 Setting ୯ click Click after setting ...

Page 142: ... 2012 LG Electronics Inc All right reserved Only for training and service purposes 12 AUTO CALIBRATION 11 AUTO CALIBRATION 2 Click System Option Setting Menu 75 6Q 5GTKCN 2QTV 5GVVKPI NKEM 5GVVKPI 3 Report Data ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ X WVX ...

Page 143: ...nics Inc All right reserved Only for training and service purposes 12 AUTO CALIBRATION 11 AUTO CALIBRATION 7 Click User Model Selection Menu NKEM QWDNG NKEM ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ X XVX LGT370 LGT370 LGT370 LGT370 LGT370 LGT370 LGT370 LGT370 LGT370 LGT370 ...

Page 144: ... right reserved Only for training and service purposes 12 AUTO CALIBRATION 11 AUTO CALIBRATION 8 Tachyon RF Calibration Start NKEM 6GUV 5VCTV 9 Tachyon RF Calibration finishes CNKDTCVKQP WVQ 2 55 ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ X YVX lgT370 gms NewFile grf LGT370 LGT370 LGT370 ...

Page 145: ...vel 11 7 ADC This procedure is for battery calibration This procedure is for battery calibration You can get main Battery Config Table and temperature Config Table will be reset 11 8 Target Power High Middle Low Description BAND 32 5 dBm 32 5 dBm 32 5 dBm Max power 914 8 MHz 897 4 MHz 880 2 MHz Frequency 124 37 975 Channel EGSM 900 32 5 dBm 32 5 dBm 32 5 dBm Max power 848 8 MHz 836 8 MHz 824 2 MHz...

Page 146: ...JMY00 SUMY00 EAC00 MCK00 Cover Assembly Rear PIFA Antenna Multiple Speaker Dual Mode LCD Module Touch Window Assembly Can Assembly Shield Button Power Button Side Volume Cover Assembly Front Tape Window Damper Speaker Damper LCD Gasket Gasket Insulator Tape Protect Screw Machine PCB Assembly Main PCB Flexible PCB Sidekey Camera Module Motor DC Microphone Condenser Rechargeable Battery Lithium Ion ...

Page 147: ...Camera MKC64323201 CUTTING PC LGT375 ATHABK ZZ Without Color 4 MEZ000900 Label After Service MLAB0001102 COMPLEX C2000 CGRSV WA White C2000 USASV DIA 4 0 PRINTING 4 MCK063300 Cover Rear MCK67156601 MOLD PC LGT375 ATHABK ZZ Without Color 4 MJN020800 Tape Decor MJN68116901 COMPLEX LGT375 ATHABK ZZ Without Color 4 MCQ043300 Damper LCD MCQ66973101 COMPLEX LGT375 ATHABK ZZ Without Color 4 MCQ015700 Dam...

Page 148: ...THABK ZZ Without Color 6 MBK070300 Can Shield MBK63273801 PRESS STS 304 0 4 LGT375 ATHABK ZZ Without Color 5 MHK000000 Sheet MHK63757801 COMPLEX LGT375 ATHABK ZZ Without Color 5 MJN000000 Tape MJN68171001 COMPLEX LGT375 AVNMBK ZZ Without Color 5 MJN061100 Tape Protect MJN68081501 COMPLEX LGT375 ATHABK ZZ Without Color 5 MJN061101 Tape Protect MJN68081601 COMPLEX LGT375 ATHABK ZZ Without Color 4 AC...

Page 149: ...3977901 COMPLEX LGT375 ATHABK ZZ Without Color 4 MEV00 Insulator MEV64107701 COMPLEX LGT375 ATHABK ZZ Without Color 4 MJN01 Tape Protect MJN68155801 COMPLEX LGT375 AVNMBK ZZ Without Color 3 GMEY00 Screw Machine GMEY0013901 BH 1 4mM 4mM MSWR FZB N ARIMA COMMUNICATIONS CORP 5 MEZ000000 Label MLAZ0038301 COMPLEX LG VX6000 ZZ Without Color PID Label 4 Array PRINTING 6 ANT101 ANT102 Contact MCIZ0008201...

Page 150: ...0 ACISBK ZZ Without Color EU1 TYPE_CIS_CIS Body SW Cap EU AL_720ea 3 MAY010800 Box Carton MBEC0003604 COMPLEX GX300 ACISWR ZZ Without Color EU1 CIS Body 720ea H 605mm 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 COM...

Page 151: ...uch Window Assembly EBD61386301 STWC L0008FA CAPACITIVE TOUCH PFF MMS128 3 2 B to B SUNTEL CO LTD 3 EBR00 PCB Assembly Main EBR75446401 LGT370 ACISBK 1 0 Main 4 EBR071800 PCB Assembly Main SMT EBR75446501 LGT370 ACISBK 1 0 Main 5 SAD010000 Software Mobile SAD33383401 Base V10b EUROPE IFX 5 EBR071600 PCB Assembly Main SM T Bottom EBR75446601 LGT370 ACISBK 1 0 Main 6 C714 Inductor Multilayer Chip EL...

Page 152: ...8 C702 C706 C707 Capacitor Ceramic Chip ECCH0000155 MCH153CN103KK 10nF 10 16V X7R 55TO 125C 1005 R TP ROHM Semiconductor KOREA CORPORATION 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 U601 IC Sub PMIC EUSY0344403 RT9396GQW QFN 24 R TP 4CH 2LDO IC Sub PMICIC Sub PMIC RICHTEK TECHNOLOGY CORP 6 R...

Page 153: ... C505 C516 C517 C518 C519 Capacitor Ceramic Chip ECCH0000198 CL05A225MQ5NSNC 2 2uF 20 6 3V X5R 55TO 85C 1005 R TP SAMSUNG ELECTRO MECHANICS CO LTD 6 M501 IC Audio Sub System EUSY0420001 TPA2055D3 1 6 5 5V 0W WLCSP R TP 20P TEXAS INSTRUMENTS INCO 6 C319 C321 C415 C416 C504 C510 C515 C612 C613 C614 Capacitor Ceramic Chip ECZH0003103 GRM36X7R104K10PT 100nF 10 10V X7R 55TO 125C 1005 R TP MURATA MANUFA...

Page 154: ...X0 5 25 2 2 ohm 0 2A SMD R TP 2P 0 MURATA MANUFACTURING CO LTD 6 C502 Capacitor Ceramic Chip ECCH0000117 CL05C270JB5NNNC 27pF 5 50V NP0 55TO 125C 1005 R TP 0 5 SAMSUNG ELECTRO MECHANICS CO LTD 6 FB504 FB505 FB701 Filter Bead SFBH0008101 BLM15AG601SN1D 600 ohm 1 0X0 5X0 5 25 0 6 ohm 0 3A SMD R TP 2P 0 MURATA MANUFACTURING CO LTD 6 R413 Resistor Chip ERHZ0000506 MCR01MZP5J682 6 8KOHM 5 1 16W 1005 R ...

Page 155: ... TP AMOTECH CO LTD 6 S301 Card Socket EAG63211701 5000 12P 2 95D A1 R0 SIM 12P STRAIGHT SMD T REEL HYUPJIN I C CO LTD 6 R512 Resistor Chip ERHZ0000443 MCR01MZP5J222 2 2KOHM 5 1 16W 1005 R TP ROHM 6 C243 C244 C616 C617 C618 C620 Capacitor Ceramic Chip ECCH0010501 GRM1555C1H7R5D 7 5pF 0 5PF 50V C0G 55TO 125C 1005 R TP MURATA MANUFACTURING CO LTD 6 FB501 FB601 Filter Bead SFBH0007102 BLM15AG100SN1D 1...

Page 156: ... Chip ECCH0005603 GRM188R61A225K 2 2uF 10 10V X5R 55TO 85C 1608 R TP MURATA MANUFACTURING CO LTD 6 C501 C506 C509 C711 C712 Capacitor Ceramic Chip ECCH0000143 MCH155CN102KK 1nF 10 50V X7R 55TO 125C 1005 R TP ROHM Semiconductor KOREA CORPORATION 6 C520 C522 Capacitor Ceramic Chip ECCH0000179 GRM155R71C223K 22nF 10 16V X7R 55TO 85C 1005 R TP MURATA MANUFACTURING CO LTD 6 R407 Resistor Chip ERHZ00002...

Page 157: ... 1 0X0 5X0 5MM R TP MURATA MANUFACTURING CO LTD 6 C239 Capacitor Ceramic Chip ECCH0000137 C1005X7R1H331KT000F 0 33nF 10 50V X7R 55TO 125C 1005 R TP TDK KOREA COOPERATION 6 R403 Resistor Chip ERHZ0000295 MCR01MZP5F5102 51KOHM 1 1 16W 1005 R TP ROHM 6 U502 IC Comparator EUSY0250501 NCS2200SQ2T2G NCS2200SQ2T2G SC70 5 PIN R TP Comparator pin compatible to EUSY0077701 SC70 R TP 5P ON SEMICONDUCTOR 6 U7...

Page 158: ...00pF 5 50V C0G 55TO 125C 1005 R TP TDK KOREA COOPERATION 6 R511 Resistor Chip ERHZ0000529 MCR01MZP5J152 1 5KOHM 5 1 16W 1005 R TP ROHM 5 EBR071700 PCB Assembly Main SMT Top EBR75446701 LGT370 ACISBK 1 0 Main 6 C714 Inductor Multilayer Chip ELCH0001403 LL1005 FHL1N0S 1NH 0 3NH 400mA 0 1OHM 20GHZ 7 SHIELD NONE 1 0X0 5X0 5MM R TP TOKO INC 6 EAX010000 PCB Main EAX64678601 LGT375 ABRABK 1 0 FR 4 Stagge...

Page 159: ...Infinion chip Pb Free EPSON TOYOCOM CORP EPSON TOYOCOM CORP 6 LD601 LD602 LD603 LED Chip EDLH0015103 19 217 UTD S887 1 TR8 Snow White 2 7 3 0 30mA 90 180mcd x y 110mW 1608 R TP 2P EVERLIGHT ELECTRONICS CO LTD 6 C406 Capacitor TA Conformal ECTH0002002 F981A336MSA 33uF 20 10V 3 3UA 55TO 125C 6OHM 2 0X1 25X0 8MM NONE SMD R TP 0 9T max NICHICON CORPORATION EAST JAPAN SALES OFFICE 6 ZD201 ZD302 ZD404 Z...

Page 160: ...J104 100KOHM 5 1 16W 1005 R TP ROHM 6 FB201 Filter Bead SFBH0007103 BLM15BB750SN1D 75 ohm 1 0X0 5X0 5 25 0 4 ohm 0 3A SMD R TP 2P 0 MURATA MANUFACTURING CO LTD 6 C240 C242 Capacitor Ceramic Chip ECZH0001217 GRM155R60J474K 470nF 10 6 3V X5R 25TO 70C 1005 BK DUP MURATA MANUFACTURING CO LTD 6 C408 C702 C706 C707 Capacitor Ceramic Chip ECCH0000155 MCH153CN103KK 10nF 10 16V X7R 55TO 125C 1005 R TP ROHM...

Page 161: ... L402 Inductor Multilayer Chip ELCH0003825 LQG15HS56NJ02D 56NH 5 200mA 0 82OHM 800MHZ 8 SHIELD NONE 1 0X0 5X0 5MM R TP MURATA MANUFACTURING CO LTD 6 FB502 FB503 FB506 FB507 Filter Bead SFBH0008102 BLM15HD182SN1D 1800 ohm 1 0X0 5X0 5 25 2 2 ohm 0 2A SMD R TP 2P 0 MURATA MANUFACTURING CO LTD 6 U301 IC MCP NAND EAN61927501 H9DA2GH1GHMMMR 46M NAND 2G SDRAM 1G 1 7VTO1 95V 8 0x9 0x0 9 TR 130P NAND DDR S...

Page 162: ...ECZH0001002 C1005CH1H0R5BT000F 0 5pF 0 1PF 50V NP0 55TO 125C 1005 R TP TDK KOREA COOPERATION 6 R612 R613 R614 Resistor Chip ERHY0008207 RC1005F470CS 47OHM 1 1 16W 1005 R TP SAMSUNG ELECTRO MECHANICS CO LTD 6 C526 Capacitor TA Confo rmal ECTH0001902 F981A106MMA 10uF 20 10V 1UA 55TO 125C 8OHM 1 6X0 85X0 8MM NONE SMD R TP 0 9T max NICHICON CORPORATION EAST JAPAN SALES OFFICE 6 C315 C316 C317 C318 C32...

Page 163: ...G CO LTD 6 C109 Inductor Multilayer Chip ELCH0003832 LQG15HS2N2S02D 2 2NH 0 3NH 300mA 0 12OHM 6GHZ 8 SHIELD NONE 1 0X0 5X0 5MM R TP MURATA MANUFACTURING CO LTD 6 C503 Capacitor Ceramic Chip ECCH0007803 CL10A106MP8NNNC 10uF 20 10V X5R 55TO 85C 1608 R TP 0 8MM SAMSUNG ELECTRO MECHANICS CO LTD 6 C538 Capacitor Ceramic Chip ECCH0005604 GRM188R60J106M 10000000 pF 6 3V M X5R TC 1608 R TP 0 8 mm MURATA M...

Page 164: ... NIHON DEMPA KOGYO CO LTD 6 U201 IC Digital Baseband Processor GSM EUSY0429401 PMB8815 281 EDGE Rx ARM11 208MHz NAND booting 2 0Mp FMR IC Digital Baseband Processor BGA R TP 281P INFINEON TECHNOLOGIES ASIA PACIFIC PTE LTD 6 R301 Resistor Chip ERHZ0000487 MCR01MZP5J474 470KOHM 5 1 16W 1005 R TP ROHM 6 R407 Resistor Chip ERHZ0000206 MCR01MZP5F10R0 10OHM 1 1 16W 1005 R TP ROHM 6 U302 IC Analog Switch...

Page 165: ...er Chip ELCH0001408 LL1005 FHL6N8J 6 8NH 5 300mA 0 23OHM 5 6GHZ 9 SHIELD NONE 1 0X0 5X0 5MM R TP TOKO INC 4 EBR071500 PCB Assembly Main Insert EBR75711201 LGT370 ACISBK 1 1 Main 5 EAX01 PCB Flexible EAX64733401 LGT375 ATHABK 1 0 POLYI Multi 2 0 15 Flexible 5 EAX00 PCB Sidekey EAX64733301 LGT375 ATHABK 1 0 POLYI Multi 2 0 15 Sidekey 5 EBR01 Camera Module EBP61562201 C2FA H440A C2FA H440A 2M FF Hyni...

Page 166: ... 5 34 15x53 55x5 7 BLACK Bar Type 553450 950mAh Bar Type WW Up LG Chem LTD 2 AFN053800 Manual Assembly Operation AFN75742001 LGT370 ACISBK ZZ Without Color Manual Assy for LGT370 CIS 3 MBM087200 Card Warranty MCDF0011303 COMPLEX GD350 CISBK ZZ Without Color 3 MFL053800 Manual Operation MFL67527302 PRINTING LGT370 ACISBK ZZ Without Color Manual for LGT370 CIS 2 EBX000000 Accessory Data Cable SGDY00...

Search results

Summary of Contents for LG-T370

Reviews:

Related manuals for LG-T370

Brands by name

Popular brands

LG LG-T370, Service Manual

Search results

Summary of Contents for LG-T370

Reviews:

Related manuals for LG-T370

Brands by name

Popular brands