LG LG-A155 Service Manual Download

Page: 17 / 141

- 18 -

LGE Internal Use Only

Only for training and service purposes

3. TECHNICAL BRIEF

ʹΠΡΪΣΚΘΙΥ͑ι ͣͨ͑͡͡ͽ͸͑ͶΝΖΔΥΣΠΟΚΔΤ͑͟ͺΟΔ͑͑͟ͲΝΝ͑ΣΚΘΙΥ͑ΣΖΤΖΣΧΖΕ͑͟
΀ΟΝΪ͑ΗΠΣ͑ΥΣΒΚΟΚΟΘ͑ΒΟΕ͑ΤΖΣΧΚΔΖ͑ΡΦΣΡΠΤΖΤ

ͽ͸Ͷ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑΀ΟΝΪ

X_VX[W

3. TECHNICAL BRIEF

3.1.6 Connectivity

• 3 sets of UART with hardware flow control and speed up to 921600 bps

• IrDA modulator/demodulator with hardware framer supports SIR mode of operation

• HS/FS/LS USB 2.0 Device controller

• Multi Media Card/Secure Digital Memory Card/Memory Stick/Memory Stick Prto/SDIO host controller

• Supports SDIO interface for SDIO peripherals as well as WIFI connectivity

• DAI/PCM and !2S interface for Audio application

3.1.7 Low Power Schemes

• Power Down Mode for analog and digital circuits

• Processor Sleep Mode

• Pause Mode of 32KHs clocking at Standby State

• 3-channel Auxiliary 10-bit A/D Converter for application usage other than battery monitoring

3.1.8 Power and Supply Management

• 2.8V to 4.7V Input Range

• Charger Input up to 8V

• 11 sets of LDO Optimized Specific GSM Sub-systems

• One LDO for RF transceiver

• High Operation Efficiency and Low Stand-by Current

• Dual SIM Card Interface

• One boost regulator and Four Open-Drain Output Current Regulators to Supply/Control the LED

• LDO type Vibrator

• One NMOS switch to control R(GB) LED

• Thermal Overload Protection

• Under Voltage Lock-out Protection

• Over Voltage Protection

3.1.9 Integrated RF Receiver

• Direct conversion architecture

• Quad band differential input LNAs

• Quadrature RF mixers

• Fully integrated channel filter with f3dB=150kHs

• 95dB gain with 60dB gain control range

• No IIP2 calibration

Summary of Contents for LG-A155

Page 1: ...Service Manual Model LG A155 Internal Use Only Service Manual LG A155 Date October 2010 Issue 1 0 ...

Page 2: ...nterface 47 3 13 Audio Front End 50 3 15 KEY BACLKLIGHT LED Interface 53 3 16Vibrator Interface 54 4 TROUBLE SHOOTING 55 4 1 RF Component 55 4 2 RXTrouble 56 4 3TXTrouble 60 4 4 Power OnTrouble 64 4 5 ChargingTrouble 67 4 6VibratorTrouble 69 4 7 LCDTrouble 71 4 9 SpeakerTrouble 75 4 10 EarphoneTrouble 77 4 11 ReceiverTrouble 79 4 12 MicrophoneTrouble 81 4 13 SIM Card InterfaceTrouble 83 4 14 SIM2 ...

Page 4: ...mmon carrier telecommunication service of 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 se...

Page 5: ...look slightly different G Interference and Attenuation Phone may interfere with sensitive laboratory equipment medical equipment etc Interference from unsuppressed engines or electric motors may cause problems H Electrostatic Sensitive Devices ATTENTION Boards which contain Electrostatic Sensitive Device ESD are indicated by the sign Following information is ESD handling Service personnel should g...

Page 6: ...op Output LDO Liquid Crystal Display LCD Intermediate 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 wat...

Page 7: ...ed Oscillator VCO Universal Asynchronous Receiver 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...

Page 8: ...evel 7 Stand by time Up to 200 hours Paging Period 5 RSSI 85 dBm Charging time Approx 3 hours RX Sensitivity GSM EGSM 109dBm DCS 109dBm TX output power GSM EGSM 32 3dBm Level 5 DCS PCS 29 5dBm Level 0 SIM card type 3V Small Display MAIN TFT 176 Ý 220 pixel 262K Color Status Indicator Hard icons Key Pad 0 9 Up Down Navigation Key Menu Key Clear Key Back Key Confirm Key Send Key Soft Key Left Right ...

Page 9: ...MIDI SW MIDI Mono SPK Item Feature Comment Camera 0 3M Bluetooth FM Radio Bluetooth version 2 1 76 108MHz supported 16Ȱ Speaker 12 x 7 Receiver 2 SYSTEM SPECIFICATION ʹΠΡΪΣΚΘΙΥ ι ͽ ͶΝΖΔΥΣΠΟΚΔΤ ͺΟΔ ͲΝΝ ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XWVX W Travel Adapter Yes Speaker Receiver 18x12Ȱ Speaker Receiver MIDI SW MIDI Mono SPK Item Feature Comment Camera 0 3M Blu...

Page 10: ...1880 MHz PCS TX 1850 1910 MHz RX 1930 1990 MHz 2 Phase Error RMS 5 degrees Peak 20 degrees 3 Frequency Error 0 1 ppm 4 Power Level Level Power Toler Level Power Toler 6 31dBm 3dB 14 15dBm 3dB 7 29dBm 3dB 15 13dBm 3dB 8 27dBm 3dB 16 11dBm 5dB 9 25dBm 3dB 17 9dBm 5dB 10 23dBm 3dB 18 7dBm 5dB 11 21dBm 3dB 19 5dBm 5dB 12 19dBm 3dB GSM850 EGSM 5 33dBm 2dB 13 17dBm 3dB Level Power Toler Level Power Tole...

Page 11: ...ue to switching transient 1 800 24 5 Output RF Spectrum due to modulation 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 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 GSM850 EGSM Offset from Carrier kHz Max dBm 400 19...

Page 12: ...ification 6 Output RF Spectrum due to switching 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 8 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 ...

Page 13: ...z Max dB Min dB 100 200 4 000 3 400 10 2 0 2 12 0 2 2 14 STMR 13 5 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...

Page 14: ...ar Number Power 4 2 104 2 Under 106 98 2 101 2 22 Antenna Display 2 1 1 0 Battery Bar Number Voltage 3 3 2 3 72 0 05 V 23 Battery Indicator 24 Low Voltage Warning Blinking Bar 3 45 0 05V Call Once per 1 minute Receiver 3 4 0 05V Standby Once per 3 minute Speaker 25 Forced shut down Voltage 3 35 0 05V 27 Battery Type Li Ion Battery Standard Voltage 3 7 V Battery full charge voltage 4 2 V Capacity 8...

Page 15: ...ECHNICAL BRIEF 3 TECHNICAL BRIEF 3 1 Digital Main Processor ʹΠΡΪΣΚΘΙΥ ι ͽ ͶΝΖΔΥΣΠΟΚΔΤ ͺΟΔ ͲΝΝ ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ X VX W 3 TECHNICAL BRIEF 3 1 Digital Main Processor Figure 3 1 1 MT6253 Hardware Block Diagram 3 TECHNICAL BRIEF Figure 3 1 1 MT6253 Hardware Block Diagram ...

Page 16: ...sets of General Purpose Timer Circuit Switch Data coprocessor Division coprocessor 3 1 3 External Memory Interface Supports up to 3 external devices Supports 16 bit memory components with maximum size of up to 64M Bytes for each bank Supports Flash and SRAM PSRAM with Burst Mode Support legacy industry standard parallel LCD Interface Suppport multi media companion chips with 8 16 bits data width C...

Page 17: ... Schemes Power Down Mode for analog and digital circuits Processor Sleep Mode Pause Mode of 32KHs clocking at Standby State 3 channel Auxiliary 10 bit A D Converter for application usage other than battery monitoring 3 1 8 Power and Supply Management 2 8V to 4 7V Input Range Charger Input up to 8V 11 sets of LDO Optimized Specific GSM Sub systems One LDO for RF transceiver High Operation Efficienc...

Page 18: ...o Interface and Baseband Front End GMSK modulator with analog I and Q channel outputs 10 bit D A Converter for uplink baseband I and Q signals 14 bit high resolution A D Converter for downlink baseband I and Q signals Calibration mechanism of offset and gain mismatch for baseband A D Converter and D A Converter 10 bit D A Converter for Automatic Power Control Programmable Radio RX filter with adap...

Page 19: ...erface Dedicated Parallel Interface supports 2 external 8 9 bit Parallel Interface and Serial interface for LCM 3 1 17 LCD Controller Supports LCM format RGB332 RGB444 RGB565 RGB666 RGB888 Supports LCD module with maximum resolution up to 240x320 at 16bpp Capable of combining display memories with up to 4 blending layers Accelerated Gamma correction with programmable gamma table Supports hardware ...

Page 20: ...MU control share the CCI interface along with other analog parts such as BBTX BBRX VBI and ABI during FT Figure 3 2 1 PMU system block diagram 3 TECHNICAL BRIEF 3 2 1 Low Dropout Regulators LDOs Buck converterand Reference The PMU Integrates 12 LDOs that are optimized for their given functions by balancing quiescent current dropout voltage line load regulation and output noise RF LDO Vrf The RF LD...

Page 21: ...to reject the ripple coming from the burst at 217Hz of RF power amplifier TCXO LDO Vtcxo The TCXO LDO is a linear regulator that could source 20mA max with 2 8V output voltage It supplies the temperature compensated crystal oscillator which needs ultra low noise supply with very good ripple rejection Single Step RTC LDO Vrtc The single step RTC LDO is a linear regulator that can charge up a capaci...

Page 22: ...dicated for USB circuitry It is controlled independently by the register named RG_VUSB_EN Memory Card Bluetooth LDO Vbt The VBT LDO is a linear regulator that could source 150mA max with 1 5V 1 8V 2 5V or 2 8V output for memory card or Bluetooth module It is controlled independently by the register named RG_VBT_EN Camera Analog LDO Vcama The Vcama LDO is a linear regulator that could source 150mA ...

Page 23: ... Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF ʹΠΡΪΣΚΘΙΥ ι ͽ ͶΝΖΔΥΣΠΟΚΔΤ ͺΟΔ ͲΝΝ ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ Y VX W 3 TECHNICAL BRIEF Table3 2 1 Power Supply Domains Without RF ...

Page 24: ... Power On Together with Power Management IC PMIC MT6253 offers both fine and coarse resolutions of power control through software programming With this efficient method the developer can turn on selective resources accordingly in order to achieve optimized power consumption The operating modes of MT6253 as well as main power states provided by the PMIC are shown in Figure 3 2 1 Figure 3 2 1 Major ...

Page 25: ...t provides the internal PAC function and decoder circuitry to control the RF switches The two Hetero junction Bipolar Transistor HBT PA blocks are fabricated onto a single Gallium Arsenide GaAs die One PA block supports the GSM850 900 bands and the other PA block supports the DCS1800 PCS1900 bands 3 TECHNICAL BRIEF The SKY77547 is a transmit and receive front end module FEM with Integrated Power A...

Page 26: ...share common power supply pads to distribute current The output of each PA block and the outputs to the four receive pads are connected to the antenna pad through a PHEMT RF switch The GaAs die PHEMT die Silicon Si die and passive components are mounted on a multi layer laminate substrate The assembly is encapsulated with plastic overmold C336 220p C324 6p C334 6p C327 10K R319 18K R301 33p C345 D...

Page 27: ...ECHNICAL BRIEF There are two major time bases in the MT6253 For the faster one is the 26 MHz clock originated from the digital control oscillator DCXO of RF block This is then converted to the square wave signal through CLKSQ The other time base is the 32768 Hz clock generated by an on chip oscillator connected to an external crystal Figure 3 4 1 Clock distributions inside the MT6253 4 7u C103 X10...

Page 28: ...supply four clock source MCU_CLOCK 104 113Mhz DSP_CLOCK 104 113Mhz GSM_CLOCK 104Mhz and USB_CLOCK 48Mhz For DSP MCU system clock MCU_CLOCK and DSP_CLOCK The outputted 104 113Mhz clock is controlled by MCU for 500Khz per step and settled time is under 100uS The clock is also connected to DSP MCU DCM dynamic clock manager for dynamically adjusting clock rate by digital clock divider MCU_CLOCK paces ...

Page 29: ...Ϊ ZWVX W 3 5 RFSYS of MT6253 U102 3 5 1 GENERAL DESCRIPTION RFSYS built in MT6253 SOC is a highly integrated RF transceiver for multi band GMS and GPRS cellular systems The features are listed as following Receiver Direct conversion architecture Quad band differential input LNAs Quadrature RF mixers Fully integrated channel filter with f3dB 150kHz 95 dB gain with 60 dB gain control range Figure 3 ...

Page 30: ...tal oscillator On chip programmable capacitor array for coarse tune On chip programmable capacitor array for fine tune RFSYS in a QFN package 3 TECHNICAL BRIEF ʹΠΡΪΣΚΘΙΥ ι ͽ ͶΝΖΔΥΣΠΟΚΔΤ ͺΟΔ ͲΝΝ ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ ZWVX W 3 5 1 GENERAL DESCRIPTION RFSYS built in MT6253 SOC is a highly integrated RF transceiver for multi band GMS and GPRS cellula...

Page 31: ...ides high read and write performance at low voltage on a 16 bit data bus The flash memory device has a multi partition architecture with read while program and read while erase capability The device supports synchronous burst reads up to 108 MHz using ADV and CLK address latching legacy latching on some litho density combinations and up to 133 MHz using CLK address latching only on some litho dens...

Page 32: ...m operations with VPP at 1 8 V or 9 0 V VCC and VPP can be tied together for a simple ultra low power design In addition to voltage flexibility a dedicated VPP connection provides complete data protection when VPP is less than VPPLK A Status Register provides status and error conditions of erase and program operations One Time Programmable OTP registers allow unique flash device identification tha...

Page 33: ...emperature Compensated Self Refresh Programmable Output Impedance Quality and Reliability Extended Temperature 25 C to 85 C Minimum 100K Flash Block Erase Cycles ETOX IX Flash and ETOX X Flash Technology on 128 Mbit 256 Mbit and 512Mbit M18 die ETOX X Flash on 1 Gbit M18 die Flash Performance 96 ns Initial Read Access 15 ns Asynchronous Page Mode Read Up to 133 MHz with 5 5 ns Clock to Data Output...

Page 34: ...s the complete receive and transmit paths including PLL VCO LNA PA modulator demodulator The baseband signal processor incorporates hardware engines performing frequency hopping error correcting whitening encrypting data packet assembling and de assembly to offload the embedded ARM7 3 7 1 General Description Bluetooth is a low cost wireless technology used to provide ad hoc networking between vers...

Page 35: ...ks Up to 3 simultaneous SCO and eSCO links with CVSD coding eSCO support Scatternet support Up to 4 piconets simultaneously with background inquiry page scan Sniff mode hold mode and park mode support AFH and PTA collaborative support for WLAN BT coexistence Idle mode and sleep mode enables ultra low power consumption PCM interface and built in transcoders for A law Ɇ law and linear voice with re ...

Page 36: ... BAT regulator The host can control this pin to enable the whole MT6612 system The enable voltage VIH of pin LDO28EN is 1 4V Be sure that the control signal meets the enable voltage requirement Clock generation There are two clock domains inside MT6612 The one is the System clock which supports the RF and the major MODEM functions while the other is the LPO clock which keeps track the Bluetooth cl...

Page 37: ...de controller RF Subsystem MT6612 contains a fully integrated transceiver For TX path the baseband transmit data is digitally modulated in the baseband processor then up converted to 2 4GHz RF channels through DA converter filter IQ up converter and the power amplifier The power amplifier is capable of transmitting 9dBm power for class 1 operation For RX path MT6612 is a low IF receiver architectu...

Page 38: ...NICAL BRIEF CN200 ENBY0039601 GB042 20S H10 E3000 11 10 12 9 13 8 14 7 15 6 16 5 17 4 18 3 19 2 20 1 1u C204 VIO DNI C265 VBAT DNI D203 DNI D204 DNI C201 DNI C203 VSIM2 VSIM2 DNI R238 100K R236 1n C264 DNI C205 1u C261 VSIM1 DNI C262 DNI D205 1u C263 DNI D206 DNI C206 DNI R202 J201 9 8 10 7 6 3 5 2 4 1 C1 C5 C2 C6 C3 C7 GND1 GND4 GND2 GND3 VSIM1 VMMC DNI C202 DNI D207 DNI D202 RCV_N RCV_P SIM2_CLK...

Page 39: ...o SIM cards Each interface can operator via 5 terminals As shown is the Figure 3 8 2 SIMVCC SIMSEL SIMRST SIMCLK and SIMDATA are for one SIM interface while SIM2VEE SIM2SEL SIM2RST SIM2CLK and SIM2DATA are for the other one The functions of the two SIM interfaces are identical therefore only first SIM interface will be described in this document The VSIM is used to control the external voltage sup...

Page 40: ...Multi Media Card MMC bus protocol as defined in MMC system specification version 4 1 Since SD memory Card bus protocol is backward compatible to MMC bus protocol the controller is capable of working well as the host on MMC bus under control of proper firmware Furthermore the controller also support SDIO card specification version 1 0 partially However the controller can only be configured as eithe...

Page 41: ...ads have embedded both pull up and pull down resistor because they are shared by both the Memory Stick and SD MMC Memory Card Pins 2 4 5 8 are only useful for SD MMC Memory Card Pull down resistor for these pins can be used for power saving All embedded pull up and pull down resistors can be disabled by programming the corresponding control registers if optimal pull up or pull down resistor are re...

Page 42: ...mory Card is shown in Figure 3 9 2 Before SD MMD Memory Card is inserted or powered on SW1 and SW2 shall be opened for card detection of the host side Meanwhile pull down resistor RCD on system board shall attach onto the signal CD DAT3 by the output signal RCDEN In addition SW3 on the card is default to be closed Upon insertion of SD MMC Memory Card the signal CD DAT3 will have a transition from ...

Page 43: ... These features make the ILI9225 an ideal LCD driver for medium or small size portable products such as digital cellular phones or small PDA where long battery life is a major concern 3 TECHNICAL BRIEF 3 10 LCD Interface 3 10 LCD Interface FL401 ICVE10184E150R101FR 15pF 0 1 5 6 4 7 3 8 2 9 1 INOUT_A1 INOUT_B1 INOUT_A2 INOUT_B2 INOUT_A3 INOUT_B3 INOUT_A4 INOUT_B4 1 G 2 G VBAT 100K R406 VIO 100K R40...

Page 44: ...egulators An internal 5 bit DAC is used for brightness control Users can easily configure up to 32 step of LED current by I2C interface In the section of linear regulator The RT9367C comprises a dual channel low noise and low dropout regulator sourcing up to 300mA at each channel The range of output voltage can be configured from 1 1V to 3 3V by I2C interface The outputs of LDO offer 3 accuracy an...

Page 45: ...er can set the current to 100mA 500mA through EN SET pin For the factory mode the RT9524 can allow 4 2V 2 3A power pass through to support system operation It also provides a 50mA LDO to support the power of peripheral circuit The internal thermal feedback circuit regulates the die temperature to optimize the charge rate for all ambient temperatures The RT9524 provides protection functions such as...

Page 46: ...ure 3 12 1 MAIN KEY STRUCTURE 3 TECHNICAL BRIEF 3 12 Keypad Interface KB412 KB423 KB408 KB413 KB410 KB409 KB415 KB406 KB405 KB414 KB411 KB401 KB417 KB418 KB419 KB416 KB402 KB422 KB404 KB420 KB407 END_KEY KEY_ROW0 KEY_ROW2 0 L O C _ Y E K 1 L O C _ Y E K 2 L O C _ Y E K KEY_ROW1 KEY_ROW4 KEY_ROW3 3 L O C _ Y E K 4 L O C _ Y E K END NUM 1 NUM 2 NUM 3 NUM 4 NUM 5 NUM 6 NUM 7 NUM 8 NUM 9 STAR NUM 0 SH...

Page 47: ...ssed key released and de bounce mechanisms Each time the key is pressed or released i e something different in the 6 x 7 matrix or power key the key detection block senses the change and recognizes if a key has been pressed or released Whenever the key status changes and is stable a KEYPAD IRQ is issued The MCU can then read the key s pressed directly in KP_MEM1 KP_MEM2 KP_MEM3 and KP_MEM4 registe...

Page 48: ...ssed condition Figure 3 12 4 a and Figure 3 12 4 b illustrate two keys pressed cases Since the key press detection depends on the HIGH or LOW level of the external keypad interface if keys are pressed at the same time and there exists a key that is on the same column and the same row with the other keys the pressed key cannot be correctly decoded For example if there are three key presses key1 x1 ...

Page 49: ... 03 50 specification Mono hands free audio or external FM radio playback paths are also provided The audio stereo path facilitates CD quality playback external FM radio and voice playback through a headset 3 TECHNICAL BRIEF Figure 3 13 2 shows the digital circuits block diagram of the audio front end The APB register block is an APB peripheral that stores settings from the MCU The DSP audio port D...

Page 50: ...audio front end To communicate with the external Bluetooth module the master mode PCM interface and master mode I2S EIAJ interface are supported The clock of PCM interface is 256 kHz while the frame sync is 8 kHz Both long sync and short sync interfaces are supported The PCM interface can transmit 16 bit stereo or 32 bit mono 8 kHz sampling rate voice signal Figure 3 13 3 shows the timing diagram ...

Page 51: ... EIAJ can support 32 kHz 44 1 kHz and 48 kHz sampling rate audio signals The clock frequency of I2S EIAJ can be 32Ý sampling frequency or 64Ý sampling frequency For example to transmit a 44 1 kHz CD quality music the clock frequency should be 32 Ý 44 1 kHz 1 4112 MHz or 64 Ý 44 1 kHz 2 8224 MHz I2S EIAJ interface is not only used for Bluetooth module but also for external DAC components Audio data...

Page 52: ...VBAT LD401 EDLH0013401 2 1 A C R407 4 7 KEYPAD_LED 3 14 KEY BACLKLIGHT LED Interface Key Backlight LED is controlled by KEYPAD_LED signal of MT6253 The built in open drain output switch drives the Keypad LED in the handset This switch is controlled by baseband with the enable register The keypad LED can sink 150mA and will become high impedance as disabled Figure 3 14 1 Key Backlight Block ...

Page 53: ...R416 VBAT D403 1 3 2 2 A 2 C _ 1 A 1 C Q400 1 2 3 100K R415 1K R414 VIBRATOR VIB_N 3 15 Vibrator Interface Vibrator is driven by BJT with bias resistor VBAT is connected with terminal of vibrator and terminal is connected with VIB_N It is controlled by VIBRATOR signal of MT6253 with only ON OFF function Figure 3 15 1 Vibrator Driver Block ...

Page 54: ...TING ʹΠΡΪΣΚΘΙΥ ι ͽ ͶΝΖΔΥΣΠΟΚΔΤ ͺΟΔ ͲΝΝ ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 58 140 4 1 RF Component 4 TROUBLE SHOOTING Figure 4 1 U101 Memory 256NOR 648pSDRAM PF38F4050M0Y3DF U102 Main Chip MT6253 U302 Bluetooth Chip MT6612 U303 TX Module SKY77547 X102 Crystal 26MHz Clock U303 U102 X102 U302 4 TROUBLE SHOOTING U101 ...

Page 55: ...ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 59 140 4 2 RX Trouble CHECKING FLOW 4 TROUBLE SHOOTING START Re download SW or Do calibration again HP8960 Test mode 62 CH 7 level setting TCH 62CH 60dBm setting BCCH Spectrum analyzer setting Oscilloscope setting 1 Check page52 Crystal Circuit 2 Check page53 Mobile SW TX module 3 Check PLL Control ...

Page 56: ...ΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 60 140 1 Checking Crystal Circuit 4 TROUBLE SHOOTING TEST POINT CIRCUIT WAVEFORM CHECKING FLOW TP1 Figure 4 2 1 TP1 X102 1 pin 26MHz 26 MHzO K No Crystal is OK See next page to check PLL Circuit Yes Replace TP1 4 7u C103 X102 TSX 3225 26MHZ_7_4PF 26MHz 2 1 3 4 T4 V4 L33 K34 Y6 H6 M32 FREF AU_VCM PWM XTAL1 XTAL2_GND AVDD_RTC CHG_EN BT_CLK26M 1 TP1 ...

Page 57: ...C TP1 TP7 PA_EN TP8 BS1 TP9 BS2 C336 220p C324 6p C334 6p C327 10K R319 18K R301 33p C345 DNI C325 1K R302 33p C346 DNI C316 C326 10u VRF 33p C329 22p C332 SKY77547 U303 34 35 36 16 15 14 13 12 11 10 31 32 33 7 1 9 8 1 8 9 1 7 0 2 6 1 2 5 2 2 4 3 2 3 4 2 2 25 26 27 28 29 30 1 GND1 VBATT DCS_PCS_IN GND17 GSM_IN GND16 GND15 C I G O L V 4 1 D N G P M A R V 3 1 D N G N E _ X T 2 1 D N G 1 S B 1 1 D N ...

Page 58: ...ΝΝ ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 62 140 CHECKING FLOW 4 TROUBLE SHOOTING Check TP1 of SW301 TP1 Signal is OK Replace Mobile SW SW301 Yes No Mobile SW TX Module is OK Check MT6253 U102 Control Signal is TP6 7 8 9 10 OK No Yes Check TP11 of U303 Replace TX module U303 TP2 3 High Band TP4 5 Low Band Signal is OK No Yes EGSM Rx ...

Page 59: ...ͺΟΔ ͲΝΝ ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ ZVX W CHECKING FLOW 4 TROUBLE SHOOTING START Redownload SW or Do calibration again HP8960 Test mode 62 CH 7 level setting TCH 62CH 60dBm setting BCCH Spectrum analyzer setting Oscilloscope setting 1 Check Crystal Circuit 2 Check Mobile SW Tx module 3 Check PLL Control 4 3 TX Trouble ...

Page 60: ...ΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ VX W 1 Checking Crystal Circuit 4 TROUBLE SHOOTING 1 pin Figure 4 3 1 26 MHzO K No Crystal is OK See next page to check PLL Circuit Yes Replace TP1 TP1 X102 1 pin 26MHz TEST POINT CIRCUIT WAVEFORM CHECKING FLOW 4 7u C103 X102 TSX 3225 26MHZ_7_4PF 26MHz 2 1 3 4 T4 V4 L33 K34 Y6 H6 M32 FREF AU_VCM PWM XTAL1 XTAL2_GND AVDD_RTC CHG_EN BT_CLK26M TP1 1 ...

Page 61: ...P7 BS2 TP5 PA_EN TP11 TP6 BS1 TP2 High TP3 Low C336 220p C324 6p C334 6p C327 10K R319 18K R301 33p C345 DNI C325 1K R302 33p C346 DNI C316 C326 10u VRF 33p C329 22p C332 SKY77547 U303 34 35 36 16 15 14 13 12 11 10 31 32 33 7 1 9 8 1 8 9 1 7 0 2 6 1 2 5 2 2 4 3 2 3 4 2 2 25 26 27 28 29 30 1 GND1 VBATT DCS_PCS_IN GND17 GSM_IN GND16 GND15 C I G O L V 4 1 D N G P M A R V 3 1 D N G N E _ X T 2 1 D N G...

Page 62: ... ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ VX W CHECKING FLOW 4 TROUBLE SHOOTING Check TP2 TP3 Mobile SW TX module is OK Yes TP11 signal same as TP1 Replace SW301 No Yes Replace MT6253 U102 TP2 High Band TP3 Low Band Signal is OK No Yes Check MT6253 U102 Control Signal is TP4 5 6 7 8 9 OK No Yes Yes Check TP9 of U303 TP1 Signal is OK Replace TX module U303 No EGSM Tx ...

Page 63: ...ΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 67 140 4 4 Power On Trouble 4 TROUBLE SHOOTING R101 0ohm Figure 4 4 1 Figure 4 4 2 Figure 4 4 3 Remote power on TP2 VTCXO TP11 VSIM2 TP10 VSIM1 TP9 VUSB TP8 VCAMD TP7 VCAMDA TP6 VIO TP5 VM TP4 VA TP3 VRF TP1 VCORE_PMU U102 0 1 0 1 R 1 G 5 L 3 L 2 K 1 J 9 C 2 P 4 P Y E K R W P B T E S E R N O _ T A B T U O _ L B V T B V D E L 1 K N I S I Y E K _ D N E D E L _ D A P Y E K...

Page 64: ... AL5 AP6 AL7 AJ9 AM6 AK8 JTMS JTDI JTCK JTRST_B JRTCK JTDO VCORE1 VCORE1_FB VTCXO VRF VA VM VIBRATOR VIO VCAMA VCAMD VUSB VSIM VSIM2 VREF BAT_BACKUP VCORE_PMU VTCXO 2 2u L101 1u C137 1u C138 VRF VA 1u C140 VM 1u C142 VIO VCAMA 1u C143 1u C144 VCAMD VUSB 1u C145 1u C146 VSIM1 1u C147 VSIM2 0 1u C148 1u C149 TRST TCK TDO TDI TMS RTCK TP1 TP2 TP3 TP4 TP6 TP7 TP8 TP9 TP10 TP11 TP5 Figure 4 4 4 Power B...

Page 65: ...key And check the level change into high of POWERKEY Check the voltage of The LDO outputs at U102 Logic level at RPWRON of R101 HIGH above 1 2V Is the phone power on The phone will Properly operating Charge or Change Battery Check the contact of power key Or dome switch Replace U102 MT6253 VCORE_PMU 1 2V VTCXO 2 8V VRF 2 8V VA 2 8V VM 2 8V VIO 2 8V VCAMA 2 8V VUSB 3 3V VSIM1 3 0V VSIM2 3 0V Re dow...

Page 66: ... ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 70 140 4 5 Charging Trouble TEST POINT CIRCUIT Figure 4 5 1 4 TROUBLE SHOOTING CN202 U201 R209 820 820 ohm 1 16W F 1005 R TP U201 EUSY0410801 RT9524 6 5 7 4 8 3 9 2 10 1 11 PGND VIN BATT ISET PGB GND1 CHGSB LDO GND2 IEOC EN_SET R239 10K C211 V_BUS VBAT VIO R208 3K 3000ohm 1 16W F 1005 R TP 0 1u C222 100K R211 VBUS_REG PGB CHG_EN DNI ...

Page 67: ...ΟΒΝ ΆΤΖ ΟΝΪ XVX W CHECKING FLOW 4 TROUBLE SHOOTING START Is I O Connector CN202 well soldered Check the voltage at Pin 1 of RT9524 5V Is the voltage at Pin 10 of RT9524 4 9V YES YES YES Battery is charged YES Charging is properly operating NO NO NO Resolder the CN202 Pin 1 V_BUS The TA is out of order Change the TA Replace the U201 Replace the main board Battery is charged NO Change the battery Ch...

Page 68: ... ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 72 140 4 TROUBLE SHOOTING 4 6 Vibrator Trouble TEST POINT CIRCUIT Figure 4 6 Main IC U102 TP1 TP2 TP2 TP1 Vibrator PAD 4 M 2 M 2 K A 4 H A 1 E A 6 7 O I P G _ N D P _ A D R I 3 7 O I P G _ N E R W P _ D S 5 7 O I P G _ K 2 3 _ M F W S _ 1 T S O O B V 1 T S O O B V K 2 3 _ M F R O T A R B I V T N I _ M F Main IC U102 10 R416 VBAT D403 1 3 2 2 A 2 C _ 1 A 1 C Q400 1 2 3 100K R415 1...

Page 69: ... ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 73 140 4 TROUBLE SHOOTING CHECKING FLOW SETTING Enter the engineering mode and set vibrator on at vibration of BB test menu START YES NO YES Replace vibrator YES Vibrator Working well Replace the Q400 NO Check the soldering of vibrator Resolder the Pad Is the voltage at TP2 high Replace the U102 NO Is the voltage at TP1 high ...

Page 70: ...raining and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING ʹΠΡΪΣΚΘΙΥ ι ͽ ͶΝΖΔΥΣΠΟΚΔΤ ͺΟΔ ͲΝΝ ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 74 140 4 7 LCD Trouble TEST POINT Figure 4 7 1 TP1 CN401 TP5 TP2 TP3 TP4 4 TROUBLE SHOOTING ...

Page 71: ...CVE10184E150R101FR 15pF 0 1 5 6 4 7 3 8 2 9 1 INOUT_A1 INOUT_B1 INOUT_A2 INOUT_B2 INOUT_A3 INOUT_B3 INOUT_A4 INOUT_B4 1 G 2 G FL400 ICVE10184E150R101FR 15pF 0 1 5 6 4 7 3 8 2 9 1 INOUT_A1 INOUT_B1 INOUT_A2 INOUT_B2 INOUT_A3 INOUT_B3 INOUT_A4 INOUT_B4 1 G 2 G 1u C401 100K R401 LCD_DATA01 LCD_DATA02 LCD_DATA03 LCD_DATA07 LCD_DATA04 LCD_DATA05 LCD_DATA06 LCD_RESET LCD_WR LCD_CS LCD_RS LED_CA1 LED_CA2...

Page 72: ...ernal Use Only 4 TROUBLE SHOOTING ʹΠΡΪΣΚΘΙΥ ι ͽ ͶΝΖΔΥΣΠΟΚΔΤ ͺΟΔ ͲΝΝ ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 76 140 Waveform Graph 4 7 1 LCD Backlight Control Signal Waveform Graph 4 7 2 LCD Data Waveform LCD_BACKLIGHT_CTRT I2C DATA LCD_RS LCD_CS LCD_WR 4 TROUBLE SHOOTING ...

Page 73: ...Ζ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 77 140 CHECKING FLOW START Is the connection of TP1 with LCD connector ok YES NO Reassemble LCD connector NO Check the Voltage Level of TP5 is about Battery voltage SWIF signal is high Level NO YES YES Check the Waveform of EMI filter Resoldering or Replace U400 NO Resoldering EMI filter TP2 TP3 TP4 Does LCD work properly Replace LCD module LCD working well YES 4 TR...

Page 74: ...UT 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 FB208 BLM15AB601SN1 600 FB202 1800 3 3n C207 C210 2 2u C226 39p 39p C227 1u C217 1u C215 1u C221 1800 BLM15BD182SN1D FB201 DNI D208 C208 3 3n 1u C233 1u C232 DNI C250 4 7u C225 2 2u C214 VHP VBAT 1u C230 1u C231 FB207 BLM15AB601SN1 600 HP_ROUT HP_LOUT AU_MOUTL AU_MOUTR I2C_SDA1 I2C_SCL1 RCV_EAR_P RCV_EAR_N TP3 VIO 2...

Page 75: ...ΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 83 140 CHECKING FLOW 4 TROUBLE SHOOTING START Cal l Check the state of contact of speaker Speaker Working well Check the Audio signal TP1 No Yes Change the TP2 Replace Change speaker No Check the Audio signal TP3 No Replace Change the U102 Yes Yes START Mp3 Check the state of contact of speaker Speaker Working well Check the Audio signal TP1 Yes Check the Audio signal T...

Page 76: ...15 13 11 9 7 5 4 3 2 1 14 12 10 8 6 C242 0 1u L201 270n 39p C220 0 R201 D210 DNI L202 27n R203 0 C212 0 1u C224 DNI 33p C209 C257 1n IC200 EUSY0434001 2 B 1 C 2 C C3 A2 C4 D3 D1 D4 A1 B1 A3 B4 B3 B5 A5 C5 A4 D5 D2 BAT VB DN1 COMN1 DP2 COMP2 U1 UID U2 RES MIC AUD1 CAP AUD2 GND ISET IC L C S A D S T N I VA101 DNI FB203 120 R206 100 1u C223 2 2K R207 39p C218 V_BUS 39p C213 VBUS_REG VIO V_BUS C219 1n...

Page 77: ...Earphone will work properly Can you hear your voice from the earphone Set the audio part of the test Equipment to echo mode Change t he 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 TP 2 Resolder TP1 NO YES Can you hear the sound from the earphone NO Change the earphone and try again NO C...

Page 78: ...ure 4 11 1 TP1 TP1 TP2 Sub PCB Main PCB U102 TP2 CN200 C120 47p C121 47p C152 47p C153 47p V6 U5 R3 K4 J3 C3 F8 E5 F6 G5 F4 E3 D2 C1 B2 K6 AU_MICBIAS AU_IN1_P AU_IN1_N AU_IN0_N AU_IN0_P AU_FMINR AU_FMINL AU_OUT0_N AU_OUT0_P AU_MOUTL AU_MOUTR SPK1_P SPK1_N PAD_VRT DP DM C125 47p C124 47p 5 1K R117 MAIN_MICN MAIN_MICP USB_DP USB_DM HP_MICP HP_MICN FM_AUDIO_L AU_MOUTL AU_MOUTR FM_AUDIO_R RCV_SUB_N RC...

Page 79: ...Ϊ 87 140 SETTING After initialize Agilent 8960 Test EGSM900 DCS mode or GSM850 PCS mode Set the property of audio as PRBS or continuous wave Set the receiving volume of mobile as Max CHECKING FLOW 4 TROUBLE SHOOTING START Does waveform at TP1 fluctuate NO Resoldering Change the CN200 or CN500 YES Receiver will work properly Is receiver connected Properly YES NO Change the receiver Does waveform at...

Page 80: ...ΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 88 140 4 12 Microphone Trouble TEST POINT CIRCUIT Figure 4 12 1 4 TROUBLE SHOOTING TP1 TP2 TP3 TP4 TP6 TP7 TP5 TP1 TP2 TP6 TP7 TP5 TP4 TP3 C421 DNI C419 0 1u K 1 2 0 4 R VA402 SEVY0005402 VA401 C422 DNI 100 R412 100 R411 MIC401 2 1 C420 0 1u 0 R410 2 2K R413 2 2K R418 C404 47p MICBIAS C403 10u MAIN_MICN MAIN_MICP MAIN MICROPHONE TP3 TP2 TP1 TP5 TP6 TP4 TP7 4 11 Microphone ...

Page 81: ...TTING After initialize Agilent 8960 Test EGSM900 DCS mode or GSM850 PCS mode CHECKING FLOW START NO YES Microphone will work properly YES Check the signal Level at each side of TP1 Is it a few tens mV AC Check the soldering of TP3 TP4 TP5 TP6 TP7 Make a phone call then check TP2 mic bias signal comes from U102 NO Change the microphone YES NO Resolder component 1 Check mic Bias signal line 2 Change...

Page 82: ...CUIT 4 TROUBLE SHOOTING TP1 TP1 Figure 4 13 1 C503 4 7u C502 1u S500 8 S 4 S 7 S 4 G 3 S 3 G 6 S 2 G 2 S 1 G S1 T8 T7 T6 T5 T4 T3 T2 T1 S5 ST1 ST2 COMMON DETECT GND DAT2 CD_DAT3_2 CMD VDD CLK2 VSS_2 DAT0 DAT1 VCC_VOLTAGE 1 D N G T E S E R _ C C V 2 D N G P P V 3 D N G 1 K L C 4 D N G O I 1 D E V R E S E R 2 D E V R E S E R VMMC VSIM1 MMC_DATA1 MMC_DATA0 MMC_DATA3 MMC_CMD MMC_CLK MMC_DATA2 K L C _ ...

Page 83: ...ΤΖ ΟΝΪ 91 140 CHECKING FLOW 4 TROUBLE SHOOTING START Does the SIM card Support 1 8V NO Change the SIM Card This phone supports 1 8V SIM card YES Is Voltage at the S1 of TP1 1 8V NO Change the U102 NO YES ResolderTP1 YES Voltage output of VSIM LDO Is 1 8V 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 b...

Page 84: ...Σ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ YVX W 4 14 SIM2 Card Interface Trouble TEST POINT CIRCUIT Figure 4 13 1 4 TROUBLE SHOOTING TP1 TP1 1 1u C204 DNI D203 DNI D204 DNI C201 DNI C203 VSIM2 VSIM2 DNI R202 J201 9 8 10 7 6 3 5 2 4 1 C1 C5 C2 C6 C3 C7 GND1 GND4 GND2 GND3 DNI C202 DNI D202 SIM2_CLK SIM2_RST SIM2_DATA TP1 Figure 4 14 1 4 13 SIM2 Card Interface Trouble Figure 4 13 1 ...

Page 85: ... ΟΝΪ 93 140 CHECKING FLOW 4 TROUBLE SHOOTING START Does the SIM card Support 1 8V NO Change the SIM Card This phone supports 1 8V SIM card YES Is Voltage at the pin1 of TP1 1 8V NO Change the U102 NO YES Resolder TP1 YES Voltage output of VSIM LDO Is 1 8V 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 ...

Page 86: ...or training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING ʹΠΡΪΣΚΘΙΥ ι ͽ ͶΝΖΔΥΣΠΟΚΔΤ ͺΟΔ ͲΝΝ ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ VX W 4 TROUBLE SHOOTING 4 14 KEY backlight Trouble TEST POINT Figure 4 14 1 TP1 TP2 ...

Page 87: ...ΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 95 140 4 TROUBLE SHOOTING CHECKING FLOW CIRCUIT TP1 TP2 START VBAT high NO Check U102 TP1 TP2 Low NO YES KEYPAD_LED Low Backlight will work properly YES Replace or resolder TP1 or TP2 or LED YES NO Check U102 2 1 EDLH0013401 LD400 A C 4 7 R408 DNI VA405 DNI VA404 VBAT LD401 EDLH0013401 2 1 A C R407 4 7 KEYPAD_LED TP1 TP2 ...

Page 88: ...Ϊ VX W 4 TROUBLE SHOOTING 4 15 Micro SD Trouble TEST POINT CIRCUIT Figure 4 15 1 TP1 TP2 TP3 TP2 TP3 CN200 ENBY0039601 GB042 20S H10 E3000 11 10 12 9 13 8 14 7 15 6 16 5 17 4 18 3 19 2 20 1 VIO DNI C265 VBAT DNI R238 100K R236 1n C264 DNI C205 1u C261 VSIM1 DNI C262 DNI D205 1u C263 DNI D206 DNI C206 VSIM1 VMMC DNI D207 RCV_N RCV_P MMC_DATA1 MMC_DATA0 MMC_DATA3 MMC_CMD MMC_CLK MMC_DATA2 SIM1_CLK S...

Page 89: ...ΚΔΤ ͺΟΔ ͲΝΝ ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 97 140 4 TROUBLE SHOOTING CHECKING FLOW Micro SD Card will work properly Micro SD Detect OK START Re attach or Replace TP1 NO YES MMC_DET TP2 Is High NO YES Check out MC_CLK Data Timing OK Re download SW NO YES YES Replace Micro SD Card Check the TP3 2 8V YES NO Change U102 ...

Page 90: ...2 1 NC NC_DC UB 3 G 1 G B2 G2 B1 22n L319 BT_2V8 15K R313 51K R320 MT6612 U302 4 3 5 9 5 3 8 9 1 5 1 4 1 0 1 1 1 2 1 3 2 31 33 32 25 30 29 6 7 3 4 1 40 26 24 27 28 36 39 2 37 38 13 20 21 22 16 18 17 1 4 D A P D N G RFTEST1 RFTEST2 RFTEST3 RF2G_N RF2G_P RES_IN OSC_IN TESTMODE SRCLKENA SYSRST_B EXT32K GPIO0 GPIO1 GPIO4 GPIO5 ECLK_SEL UTXD1 URXD1 PCMCLK PCMSYNC PCMOUT PCMIN JTCK JTRST_B JTDI JTMS JTD...

Page 91: ...ΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ 99 140 4 TROUBLE SHOOTING CHECKING FLOW A condition is good START Check of BT Ant condition NO YES YES BT will work properly Check condition of matching components TP2 TP3 A condition is good NO YES Give the additory solder in TP2 TP3 Replace TP1 Check Bias Voltage VBAT at TP4 YES NO Replace U102 Check Bias Voltage BT_2V8 at TP5 YES NO Replace TP6 Check TP7 NO R...

Page 92: ...TP2 TP3 TP4 TP5 TP6 CN202 15 13 11 9 7 5 4 3 2 1 14 12 10 8 6 L201 270n D210 DNI 1u C223 10p C241 FM_ANT TP1 1u C313 1u C305 VIO VBAT VIO 3 3p C312 100K R304 C322 3 3p R305 0 10K R306 100n C314 100K R307 1u C306 1n C304 U301 SI4704 D50 GMR 1 2 6 1 7 1 8 1 9 1 0 2 11 12 13 14 15 0 1 9 8 7 6 5 4 3 2 1 NC1 FMI RFGND LPI RST_ _ N E S K L C S O I D S K L C R D V DOUT LOUT ROUT GND VA 2 C N 1 O P G _ T ...

Page 93: ...ion is good START Check of ear_jack condition NO YES FM_radio will work properly Check condition of matching components TP2 A condition is good NO YES Give the additory solder in TP2 Replace TP1 Check Bias Voltage TP3 TP4 YES NO Replace U102 START Check of earless condition Check condition of intenna A condition is good YES NO Replace Battery Cover NO Replace U102 A condition is good Check Bias Vo...

Page 94: ...0 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 5 DOWNLOAD 5 DOWNLOAD k G GaG㜼 Onzt s pG GZUWP XUj G G GGaG㜼 iyh psGO tnP YUGzV G 㾡 aG㜼 OGw 㾡ㇵḴ㛺㢀UGP LG A155 LG A155 ...

Page 95: ... 96 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 5 DOWNLOAD kss 㾡 a 㜼 On Y_W kssP kssG 㾡 aG㜼 On Y_W UkssP LG A155 LG A155 LG A155 ...

Page 103: ... 104 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 5 DOWNLOAD LG A155 LG A155 LG A155 LG A155 LG A155 LG A155 LG A155 LG A155 LG A155 ...

Page 107: ... training and service purposes 6 BLOCK DIAGRAM 6 BLOCK DIAGRAM ʹΠΡΪΣΚΘΙΥ ι ͽ ͶΝΖΔΥΣΠΟΚΔΤ ͺΟΔ ͲΝΝ ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XWYVX W 6 Block Diagram 6 Block Diagram Pad 1 2 3 4 5 6 7 8 9 䋪 0 䋤 Pad 1 2 3 4 5 6 7 8 9 䋪 0 䋤 1 2 3 4 5 6 7 8 9 䋪 0 䋤 ...

Page 108: ..._N PAD_VRT DP DM KCOL6_GPIO1 KCOL5_GPIO2 KCOL4_GPIO3 KCOL3_GPIO4 KCOL2_GPIO5 KCOL1_GPIO6 KCOL0_GPIO7 KROW5_GPIO8 KROW4_GPIO9 KROW3_GPIO10 KROW2_GPIO11 KROW1_GPIO12 KROW0_GPIO13 UTXD1 URXD1 URTS1_B_GPIO25 UCTS1_B_GPIO24 UTXD2_GPIO23 URXD2_GPIO22 UTXD3_GPIO21 URXD3_GPIO20 VM_SEL WATCHDOG SECURITY_EN SRCLKENAI_GPIO77 TEST_MODE SYSRST_B JTMS JTDI JTCK JTRST_B JRTCK JTDO VCORE1 VCORE1_FB VTCXO VRF VA V...

Page 109: ...02 1u C217 1u C215 1u C221 C211 1800 BLM15BD182SN1D FB201 VCAMD TP200 C224 DNI J201 9 8 10 7 6 3 5 2 4 1 C1 C5 C2 C6 C3 C7 GND1 GND4 GND2 GND3 DNI D208 33p C209 C257 1n C208 3 3n 1u C233 1u C232 TP202 VBAT 1u C216 R204 1K R205 100K IC200 EUSY0434001 2 B 1 C 2 C C3 A2 C4 D3 D1 D4 A1 B1 A3 B4 B3 B5 A5 C5 A4 D5 D2 BAT VB DN1 COMN1 DP2 COMP2 U1 UID U2 RES MIC AUD1 CAP AUD2 GND ISET IC L C S A D S T N ...

Page 110: ...C C V N E 8 2 O D L T A B V T U O _ 8 2 C C V 2 _ 8 2 C C V 3 _ 8 2 C C V 4 _ 8 2 C C V 5 _ 8 2 C C V 8 2 D D V T U O O D L _ 2 1 D D V 1 _ 2 1 D D V 2 _ 2 1 D D V C323 1u 18n L303 C309 1 5p C326 10u U301 SI4704 D50 GMR 1 2 6 1 7 1 8 1 9 1 0 2 11 12 13 14 15 0 1 9 8 7 6 5 4 3 2 1 NC1 FMI RFGND LPI RST_ _ N E S K L C S O I D S K L C R D V DOUT LOUT ROUT GND VA 2 C N 1 O P G _ T N I _ 2 0 P G K L C ...

Page 111: ...R101FR 15pF 0 1 5 6 4 7 3 8 2 9 1 INOUT_A1 INOUT_B1 INOUT_A2 INOUT_B2 INOUT_A3 INOUT_B3 INOUT_A4 INOUT_B4 1 G 2 G KB404 U400 1 2 20 19 18 8 7 6 5 9 4 10 3 1 1 2 2 1 1 13 4 1 15 16 17 LED3 LED4 NC2 2 O D L AVIN N 1 C 1 O D L N 2 C D N G A D N G P NC1 P 2 C ENA P 1 C PVIN SCL SDA LED2 LED1 VOUT G _ G U L S KB420 KB407 C407 100u VBAT D403 1 3 2 2 A 2 C _ 1 A 1 C Q400 1 2 3 100K R415 1K R414 C404 47p ...

Page 112: ...16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 S500 8 S 4 S 7 S 4 G 3 S 3 G 6 S 2 G 2 S 1 G S1 T8 T7 T6 T5 T4 T3 T2 T1 S5 ST1 ST2 COMMON DETECT GND DAT2 CD_DAT3_2 CMD VDD CLK2 VSS_2 DAT0 DAT1 VCC_VOLTAGE 1 D N G T E S E R _ C C V 2 D N G P P V 3 D N G 1 K L C 4 D N G O I 1 D E V R E S E R 2 D E V R E S E R VMMC VSIM1 0 R500 0 R501 VA501 VA500 VSIM1 VMMC RCV_N RCV_N RCV_P RCV_P MMC_DATA1 MMC_DATA1 MMC_DATA...

Page 113: ...H10 E3000 11 10 12 9 13 8 14 7 15 6 16 5 17 4 18 3 19 2 20 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 L K J I H G F E D C B A L K J I H G F E D C B A 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 RCV_N RCV_N RCV_P RCV_P MMC_DATA1 MMC_DATA1 MMC_DATA0 MMC_DATA0 MMC_DATA3 MMC_DATA3 MMC_CMD MMC_CMD MMC_CLK MMC_CLK MMC_DATA2 MMC_DATA2 SIM1_CLK SIM1_CLK SIM1_DATA SIM1_DATA SIM1_RST SIM1_RST MMC_DET MMC_DET VIB_P...

Page 114: ... training and service purposes LGE Internal Use Only 8 BGA PIN MAP 8 BGA PIN MAP ʹΠΡΪΣΚΘΙΥ ι ͽ ͶΝΖΔΥΣΠΟΚΔΤ ͺΟΔ ͲΝΝ ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XWZVX W 8 5 BGA PIN MAP Top View BGA IC pin check U102 not in use 8 PCB LAYOUT ...

Page 115: ...ight reserved Only for training and service purposes 8 BGA PIN MAP ʹΠΡΪΣΚΘΙΥ ι ͽ ͶΝΖΔΥΣΠΟΚΔΤ ͺΟΔ ͲΝΝ ΣΚΘΙΥ ΣΖΤΖΣΧΖΕ ΟΝΪ ΗΠΣ ΥΣΒΚΟΚΟΘ ΒΟΕ ΤΖΣΧΚΔΖ ΡΦΣΡΠΤΖΤ ͽ Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ XW VX W BGA IC pin check U101 ؼ Ball Diagram Top View PF38F4050M0Y3DF 8 PCB LAYOUT not in use ...

Page 116: ...nc All right reserved Only for training and service purposes LD401 KB416 KB420 KB417 KB407 KB405 KB413 KB412 KB411 LD400 K 1 4 B 0 KB402 KB423 KB406 KB414 KB415 9 1 4 B K 8 1 4 B K KB422 KB401 KB404 KB408 KB409 LG A155_MAIN_SPFY0236101 1 0_TOP LD400 LD401 No Key Backlight ...

Page 117: ...3 C 3 3 3 C 2 0 3 R 4 3 3 C 9 0 3 R ANT302 3 5 1 C 2 0 2 C 4 0 2 D 5 1 1 C 9 0 3 C FL302 9 5 2 C 3 2 4 C TP401 TP400 FL400 6 0 4 R 9 4 2 C R101 C110 3 1 1 C C108 2 0 1 X 7 3 1 C C151 FL305 4 0 3 L FL301 2 0 3 L FL303 7 1 3 C U202 R204 0 1 3 C FL401 FL402 R205 3 0 4 R 1 0 4 D 2 0 4 C 1 0 4 C C233 C152 C216 1 0 1 T A B R120 1 1 4 C 2 1 4 C D202 C201 1 1 1 P T 2 1 1 P T TP100 TP113 4 0 1 R 8 1 3 C 5 ...

Page 118: ...y Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 10 11 20 1 0 5 N C 0 0 5 T N A 2 0 5 C CN500 LG A155_SUB_SPJY0086501 1 0_PLACE_TOP CN501 No Receiver CN500 No u SD Memory No Receiver No Vibrator ...

Page 119: ...Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes R501 0 0 5 B V R500 C501 VA501 2 0 5 N C C500 VA500 C504 ZD501 3 0 5 C S500 LG A155_SUB_SPJY0086501 1 0_PLACE_BOT CN502 No FM RADIO VB500 No Vibrator ...

Page 120: ...AYOUT LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes CN601 0 0 6 N C LG A155_FPCB_SPCY0261001 1 0_PLACE_BOT LG A155_FPCB_SPCY0261001 1 0_PLACE_TOP ...

Page 122: ...st 1 1 All auto 7 ERS 1 1 All auto 1 2 Key press 1 3 Sound 1 4 Vibrator 1 5 External memory 1 6 SIM 1 7 Camera 1 8 Audio loopback 2 ELT mode 7 1 Client status 7 1 1 Active 7 1 2 Active File save 7 1 3 Inactive 7 1 4 Inactive File save 7 1 5 Light mode 7 1 6 Full mode 2 ELT mode 2 1 Automatic 2 1 1 1Time 2 1 2 2Times 2 1 3 3Times 2 1 4 4Times 2 1 5 5Times 2 1 6 25Times 2 1 7 100Times 7 1 7 Retry 7 ...

Page 123: ...CS1800 8 3 1 2 5 PCS1900 8 4 MMS 8 5 DRM 10 1 2 3 115200 10 2 Sleep mode 10 2 1 Enable 10 2 2 Disable 10 3 DCM 10 3 1 Enable 10 3 2 Disable 10 4 Memory dump 10 4 1 Enable 8 6 RF BER 8 6 1 Review 8 6 2 LCD 8 6 3 Vibrator 8 7 Baseband 8 7 1 Charging info 8 7 2 Battery info 8 7 3 LCD Main d 10 4 2 Disable 10 5 Buffer monitor 10 5 1 Disable 10 5 2 All 10 5 3 8Bytes 10 5 4 16Bytes 10 5 5 32Bytes 10 5 6...

Page 124: ...eserved Only for training and service purposes LGE Internal Use Only 11 RF CALIBRATION 11 RF CALIBRATION Challenge 10 The People Company 11 1 1 Configuration of directory 11 1 Configuration of Tachyon 2 6 LG A155 LG A155 LG A155 LG A155 LG A155 LG A155 ...

Page 125: ...tion Loss adjust Instrument Tester control dll Model Model files is present Model Solution Qualcomm EMP ADI INFINEON MODEL NAME LGGM630 LGSH470 BUYER NAME SKT TEL VIVO OCX Conponent files PhoneCmd Phone communication file Report Report Files is present Cal data test data File Description MODEL NAME _Calibration XML There are imformations to calibrate It consist of calibration items MODEL NAME _Cal...

Page 126: ...re start calibration auto test 11 2 1 Model selection a Click the icon in tool bar Then You can make a choice of LG A165 for loading cfg files before run b Select model name and then do double click the buyer name You will see configuration files loaded in the right window with PASS information above Example of selection of model name LG A155 LG A155 LG A155 LG A155 LG A155 LG A155 LG A155 LG A155...

Page 127: ...oses 11 RF CALIBRATION Challenge 10 The People Company 2 How to use Tachyon 11 2 2 Start cal auto a Click calibration autotest button in Tool bar b Calibration autotest will be executed in order 1 Precede Action NV write Test command send 2 RF Calibration 3 RF Auto test 4 After action Phone reset Change UE to AMSS ...

Page 128: ...SJMY00 SUSY00 ACGM00 MWAC00 Location Description MCJA00 Cover Battery SBPL00 Mobile Phone Battery Li Ion ACGK00 Cover Assembly Front AKAC00 KEYPAD ASSY MAIN MWAC00 WINDOW LCD ACGM00 COVER ASSY REAR SNGF00 Antenna Helical GGZZ00 Screw Tapping SAFY00 PCB Assembly Main SJMY00 Motor DC ABFZ00 BRACKET ASSY SURY00 Receiver SUSY00 Speaker Module ADCA00 Dome Assembly Metal MCBA00 Can Shield SACY00 PCB Ass...

Page 130: ...02 BOX Paper 120 56 90 4 COLOR LGA155 AINDGG ZZ Without Color LG A155 IND TR1 1H 2 MBAD00 Bag Vinyl MBAD0005204 COMPLEX LG LX260 SPRAG ZZ Without Color 2 MBEE00 Box Master MBEE0059801 COMPLEX KS360 ACNRD ZZ Without Color 2 MLAJ00 Label Master Box MLAJ0004402 COMPLEX CG300 CGR ZZ Without Color LABEL MASTER BOX for CGR TDR 2VER mbox_label 2 MLAP Label Unit MLAP0001138 COMPLEX LG RD6100 RLC ZZ Withou...

Page 131: ... MOLD PC LUPOY SC 1004A 4 MLAB Label After Service MLAB0004801 COMPLEX LG LB3300 LGT ZZ Without Color 4 MPBZ00 Damper MPBZ0342601 COMPLEX LG A155 INDGG ZZ Without Color COMPLEX empty 4 MPBZ01 Damper MPBZ0342701 COMPLEX LG A155 INDGG ZZ Without Color COMPLEX empty 3 GGZZ00 Screw Tapping GGZZ0005101 GGZZ0005101 CH 1 6mM 4 5mM MSWR FZB SERVEONE CO LTD 3 MLAA00 Label Approval MLAA0062301 COMPLEX KB770...

Page 132: ...MPLEX LG A165 INDKV ZZ Without Color PRESS STS 5 MEV000001 Insulator MEV63651401 COMPLEX LGA165 AINDKV ZY Color Unfixed 5 MIDZ00 Insulator MIDZ0270401 COMPLEX LG A165 INDKV ZZ Without Color COMPLEX empty 5 MTAZ00 Tape MTAZ0346601 COMPLEX LG A165 INDKV ZZ Without Color COMPLEX empty 5 MTAZ01 Tape MTAZ0372901 COMPLEX LG A165 INDKV ZZ Without Color COMPLEX empty 7 MPBZ00 Damper MPBZ0343001 COMPLEX LG...

Page 133: ...T SACE0112001ත 2 LG A165 INDKV FLEXIBLE 1 0 7 SACC00 PCB Assembly Flexible SMT Bottom SACC0084901 LG A165 INDKV FLEXIBLE 1 0 8 CN600 CN601 Connector BtoB ENBY0039501 GB042 20P H10 E3000 20P 0 40MM STRAIGHT PLUG SMD R TP 1M LS Mtron Ltd 7 SPCY00 PCB Flexible SPCY0261001 LG A165 INDKV FLEXIBLE C POLYI 0 15 mm DOUBLE 5 EBR072900 PCB Assembly Sub SAJY0055701ත 2 LG A155 INDGG SUB B 6 SAJB00 PCB Assembl...

Page 134: ...ottom SAFC0160401ත 100 LG A155 MAIN E 6 C327 C334 Capacitor Ceramic Chip ECCH0000107 MCH155A060DK 6pF 0 25PF 50V NP0 55TO 125C 1005 R TP ROHM Semiconductor KOREA CORPORATION 6 C307 C308 Capacitor Ceramic Chip ECCH0000108 MCH155A070DK 7pF 0 25PF 50V NP0 55TO 125C 1005 R TP ROHM Semiconductor KOREA CORPORATION 6 C241 Capacitor Ceramic Chip ECCH0000110 MCH155A100D 10pF 0 25PF 50V NP0 55TO 125C 1005 R...

Page 135: ... X5R TC 1608 R TP 0 8 mm MURATA MANUFACTURING CO LTD 6 C341 C343 C410 C413 C423 Capacitor Ceramic Chip ECCH0007804 CL05A225MP5NSNC 2 2uF 20 10V X5R 55TO 85C 1005 R TP 0 5MM SAMSUNG ELECTRO MECHANICS CO LTD 6 C103 C139 C225 Capacitor Ceramic Chip ECCH0017601 CL05A475MQ5NRNC 4 7uF 20 6 3V X5R 55TO 85C 1005 R TP 0 5MM SAMSUNG ELECTRO MECHANICS CO LTD 6 C407 Capacitor TA Conformal ECTH0002703 TCTAL1A1...

Page 136: ...CT 5V 6 5V 4A 100W R TP 2P 1 SEMTECH CORPORATION 6 L300 L301 Inductor Multilayer Chip ELCH0001048 1005GC2T10NJLF 10NH 5 0V 250mA 0 42OHM 2 5GHZ 8 NON SHIELD 1 1 0X0 5X0 5MM R TP PILKOR ELECTRONICS LTD 6 L311 L320 Inductor Multilayer Chip ELCH0001049 1005GC2T6N8JLF 6 8NH 5 0V 250mA 0 32OHM 3GHZ 8 NON SHIELD 1 1 0X0 5X0 5MM R TP PILKOR ELECTRONICS LTD 6 L303 Inductor Multilayer Chip ELCH0001052 1005...

Page 137: ...ctor RF ENWY0008701 MS 156C NONE STRAIGHT SOCKET SMD T REEL AU 50OHM 400mDB HIROSE KOREA CO LTD 6 Q400 TR Bipolar EQBN0007101 2SC5585 NPN 6V 15V 12V 500mA 100mA 680 150mW EMT3 R TP 3P ROHM 6 R108 Resistor Chip ERHY0000105 MCR01MZP5F51R0 51OHM 1 1 16W 1005 R TP ROHM Semiconductor KOREA CORPORATION 6 R313 Resistor Chip ERHY0000128 MCR01MZP5F1502 15KOHM 1 1 16W 1005 R TP ROHM Semiconductor KOREA CORP...

Page 138: ...Resistor Chip ERHZ0000499 MCR01MZP5J562 5 6KOHM 5 1 16W 1005 R TP ROHM Semiconductor KOREA CORPORATION 6 R419 Resistor Chip ERHZ0000537 MCR01MZP5F6803 680KOHM 1 1 16W 1005 R TP ROHM Semiconductor KOREA CORPORATION 6 R416 Resistor Chip ERHZ0000702 MCR03EZP5J100 10OHM 5 1 10W 1608 R TP ROHM Semiconductor KOREA CORPORATION 6 U400 IC Charge Pump EUSY0344402 RT9367C QFN 20 R TP 4CH 2LDO 3X3 IC Sub PMIC...

Page 139: ... Bead SFBH0008103 BLM15BD102SN1 1000 1 0x0 5x0 5MM SMD R TP 2P MURATA MANUFACTURING CO LTD 6 FB101 FB102 FB201 FB202 Filter Bead SFBH0008105 BLM15BD182SN1D 1800ohm 1 0x0 5x0 55 SMD R TP 2P MURATA MANUFACTURING CO LTD 6 FL304 Filter Dielectric SFDY0002601 LFB212G45BA1A220 BPF 2 45KHZ 100 SMD R TP MURATA MANUFACTURING CO LTD 6 FL400 FL401 FL402 Filter EMI Power SFEY0010501 ICVE10184E150R101FR ESD EM...

Page 140: ...ACEMENT PART LIST Level Location No Description Part Number Spec Remark 6 LD400 LD401 LED Chip EDLH0013401 SWAA07 WHITE 3 0 3 2 20mA 1200 1400mcd 0 285 0 31 120mW 1005 R TP 2P SEOUL SEMICONDUCTOR CO LTD 6 SPFY PCB Main SPFY0236101 SPFY0236101 FR 4 Multi MULTI 6 0 8 LG A165 INDKV MAIN D FR 4 0 8 mm MULTI 6 UNITECH PRINTED CIRCUIT BOARD CORP ...

Page 141: ...32601 STA U34ID STA U34ID 100 240V 5060 Hz 5 1 V 0 7 A CE AC DC ADAPTOR DONG DO ELECTRONICS CO LTD 2 EAY060000 Adapters S SSAD0032604 STA U34IV 150Vac 350Vac 5 1V 700mA 5060 CE NONE NONE Power Systems Technologies Far East Ltd 2 EAY060000 Adapters S SSAD0032602 STA U34IR 100 240V 5060 Hz 5 1 V 0 7 A CE AC DC ADAPTOR 150Vac 350Vac 4 75Vdc 5 25Vdc 700mA 5060 WALL 2P USB 150Vac 350Vac 4 75Vdc 5 25Vdc...

Search results

Summary of Contents for LG-A155

Reviews:

Related manuals for LG-A155

Brands by name

Popular brands

LG LG-A155, Service Manual

Search results

Summary of Contents for LG-A155

Reviews:

Related manuals for LG-A155

Brands by name

Popular brands