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LG Electronics KS360 service manual KEY PCB Top

Models: KS360

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4. PCB layout

KEY PCB Top

Main FPCB Conn.

LCD Conn.

Touch FPCB Conn.

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Copyright © 2008 LG Electronics. Inc. All right reserved.	- 65 -	LGE Internal Use Only
Only for training and service purposes

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LG Electronics KS360 service manual KEY PCB Top

Contents

KS360 Internal Use OnlyEditor Date Issue Contents of Changes Version Kim Jul Revised HistoryPage Table Of Contents Page Purpose Regulatory InformationInterference and Attenuation PicturesElectrostatic Sensitive Devices APC BERCC-CV CLALGE OpllPAM PCBH/W Feature Feature CommentANT HR/EFR/FR/AMREgsm Technical specificationGSM900/EGSM Description Specification Offset from Carrier kHzBit Error Ratio BER Class II 2.439% @-102dBm Description Specification DCS1800/PCS1900BER Class II 2.439% @-100dBm Rx Level Report accuracy Stmr General Performance RMS EVM DCS1800, PCS1900Due to modulation Offset from carrierkHz Offset from carrierkHz Max. dBm 400 600 200 800KS360 series Component Block diagram KS360 series Functional Block DiagramBaseband Processor BBP Introduction General DescriptionBlock Description External Devices connected to memory interface RF InterfaceDevice Name Maker Remark Resource Interconnection DescriptionUsart Interface ADC channelUART0 UsifGpio map Port Function Net Name Description #KeypadCifresetgpio Camrst DIFRESET1GPIO KeyintCIFD7 Cifpclk CampclkUsiftxdmtsr Uartbttx Usifrxdmrst UartbtrxUsifsclk Btvcxoen #I2S1 DAI-PCM I2S1CLK0Resetn Poresetn / SCANOUT2Fcdprbn TOUT5 TouchintPower management IC Block DescriptionTop level block diagram of the PMU Block of PMB8888 LDO UsageCharging 2V~3.74V 74V~3.64V 64V~3.45V 45V~3.35VPower ON/OFF Remote Power OnSIM interface SIM CircuitSD mode Pin No Name Type Description Micro SD external memory InterfaceMemory Memory CircuitLCD Display Pin No Pin Name DescriptionReset LCD-IDVCC1 MLED5Pin LCD connector circuit Keypad Switching & Scanning Keypad Configuration CircuitCLR Touch KEY Technical Brief Keypad back-light illumination Qwerty + MultiKeypad Backlight CircuitLCD back light illumination Charge-Pump CircuitISPImage Signal Processor ISP & Camera CircuitJtag & ETM interface connector Jtag & ETM Interface CircuitKS360 series Audio signal flow diagram as following diagram AudioAudio amplifier Microphone circuitCharging circuit Charging IC OVPBluetoothcsr Bluetooth / FM Radio Circuit DiagramTechnical Brief Bluetooth / FM Radio Block Diagram FM RadioKM380 series MMI 19 18pin Multi Media Interface connectorPin Function Description 18PIN IO Connector Pin Multi port Circuit DiagramPMB 8888 Function Block Diagram General DescriptionGold Radio Circuit Diagram Receiver Block Diagram of S-GOLDradio Receiver partTransmitter part Transmitter Architecture Block Diagram RF synthesizerDcxo Front End Module controlPower Amplifier Module Pin Mame DescriptionVbatt GsminMain PCB component placement Main PCB TopMain PCB bottom Main PCB bottom placement MMI PAD KEY PCB Top Trouble shooting test setup Equipment setupPower on Trouble Check PointsTP2 Trouble shooting 2V~3.75V Charging trouble75V~3.64V 3.64V~3.45V 3.45V~3.35V TP1 TP2 Main To Fpcb Connector LCD display troubleSignal is normal on Connectors combination Fpcb status Camera TroubleStart Receiver & Speaker trouble Speaker pin contact Audio amp soldering SUB Pmic solderingTP4 Microphone trouble MICEar-MIc Jack Detection trouble TP1Connectors combination Vibrator troubleCheck Vibrator Connector Combination Signal path is connected well TR is working properly Keypad back light troubleCheck All of LEDs solder Check Vbat Check Battery Yes SIM & USD trouble Power is working Socket soldering Proper SIM is usedSIM Check Points Soldered well? Yes Power is working Socket soldering Card detect is working USD Check PointsCheck Micro SD card voltage 2V9VMMC Touch trouble Touch Check PointsTP4 Qwerty Key trouble Dome switch contacts Key coder IC solderingKey Check Points Domeswitch Waveform of DcxoTrouble Shooting of Receiver Part Main PCB BottomChecking Dcxo Circuit DcxoDcxo Cicuit Dcxo WaveformEgsm DCS PCS ANTSW1 Checking Mobile SW & FEMANTSW2 Mobile SW FEM Control Signals ANT SW1 ANT SW2Trouble Shooting of Transmitter Part See RX Part 1. Checking Dcxo CircuitChecking Transceiver Output Signals ModeGsmk 8PSKTxlb Mode Gmsk TP1 Txlb Mode 8PSK TP1 Transceiver Output Gmsk Transceiver Output 8PSKChecking PAM Control Signals PAM Control SignalsMode Palevel Txonpa PAM Mode OperationGsmk Control Signal 8PSK Control Signal 100Mobile SW & FEM Checking Points TX Mode Checking FEM & Mobile SWOff FEM TX Control Logic 101TP1ANT SW1 TP2ANT SW2 102Download & upgrade setup Preparation S/W download setup103 Download program user guide 104Multi-Download Program SettingModel-Base 105106 Circuit Diagram Hall Effect S/W 18PIN IO Connector108 Audio AMP SUB System & Signal Distributor 109110 Qwerty KEYCamera Connector SIM ConnectorCamera Power Backup BatteryBluetoothcsr 2V62VIO 112Main To Fpcb Connector Fpcb To Slide Connector 113114 Right115 Main Receiver116 BGA IC pin check U102, PMB8888 117BGA IC pin check U100, K5D1G12ACD-D075 118BGA IC pin check U303, MAX9877 119BGA IC pin check M600, BC5FM 120PCB Layout 121GSM RX 122LD100~106 No MultiKey Backlight 123124 LCD Connector CN100 No Power No Booting No Display 125Touch Connector CN102 No Touch Sense CN100 126Calibration Step Test Equipment Setup127 128 Adjust the number of times 129130 Calibration data will be saved to the following folder 131Normal Mode Ptest Mode 132Stand-alone Test 133Connected 134Tx Test 135Rx Test 136BB Test MF Test138 Exploded View & Replacement Part List 139Assy Exploded View 140Replacement Parts Mechanic component 141Exploded View & Replacement Part List 142143 Is ordered by Sbom standard on Gcsc Main component144 145 146 147 ECCH0000393148 149 150 151 152 FILTER,EMI/POWER 153154 155 156 157 158 159 160 161