Page 1 Internal Use Only Service Manual GT540 Date: April, 2010 / Issue 1.0...
Page 2: Table Of Contents
4.4 Checking GSM TX Module(GSM PAM+FEM) BLOCK ..86 4.5 Checking WCDMA Block ..........89 4.6 Checking GSM BLOCK ..........99 4.7 GPS/WIFI/BT RF COMPONENTS........104 Copyright © 2010 LG Electronics. Inc. All right reserved. - - LGE Internal Use Only Only for training and service purposes...
Page 5 • When returning system boards or parts like EEPROM to the factory, use the protective package as described. LGE Internal Use Only - 6 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 6: Performance
Part Name Comment Digital Baseband MSM7227 : Qualcomm Analog Baseband PM7540 : Qualcomm RF Chip RTR6285 : Qualcomm Copyright © 2010 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 7: Hw Features
Built-in Camera 3M CMOS Camera Main LCD Display TFT Main LCD(3’, 320 x 480) LGE Internal Use Only - 8 - Copyright © 2010 LG Electronics. Inc. All right reserved. Built-in Camera 3M CMOS Camera Only for training and service purposes...
Page 8 MPEG4, H.263, Voice Recording Speaker Phone mode Support Travel Adapter CDROM Stereo Headset Data Cable T-Flash (External Memory) Copyright © 2010 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 9: Sw Features
Own Number Fixed Dial Number (add/edit/delete are not Service Dial Number Read only LGE Internal Use Only - 10 - Copyright © 2010 LG Electronics. Inc. All right reserved. Own Number Only for training and service purposes (add/edit/delete are not...
Page 10 Support only web browser based on WAP Browser webkit. WAP stack and wml are not supported. Download Melody / Over web browser Wallpaper Copyright © 2010 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 11 GPRS Class 12 EDGE Class 12 Hold / Retrieve Conference Call Max. 6 DTMF Memo pad SyncML Email LGE Internal Use Only - 12 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 12: Hw Spec
2. Performance 2.6. HW SPEC. 1) GSM transceiver specification Copyright © 2010 LG Electronics. Inc. All right reserved. - 1 - LGE Internal Use Only Only for training and service purposes...
Page 16 2. Performance 5) HSDPA receiver specification 6) WLAN 802.11b transceiver specification Copyright © 2010 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
Page 17 2. PERFORMANCE 7) WLAN 802.11g transceiver specification 8) GPS receiver specification LGE Internal Use Only - 18 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 18: Technnical Brief
3. TECHNICAL BRIEF 3.1 GENERAL DESCRIPTION The GT540 supports UMTS-900, UMTS-2100, GSM-850, GSM-850, GSM-900, GSM-1800, and GSM-1900 based GSM/GPRS/EDGE/UMTS. All receivers and the UMTS transmitter use the radioOne1Zero-IF architecture to eliminate intermediate frequencies, directly converting signals between RF and baseband. The quad-band GSM transmitters use a baseband-to-IF upconversion followed by an offset phase-locked loop that translates the GMSK-modulated or 8-PSK-modulated signal to RF.
Page 19 3. TECHNICAL BRIEF A generic, high-level functional block diagram of GT540 is shown in Figure 1-1. One antenna collects base station forward link signals and radiates handset reverse link signals. The antenna connects with receive and transmit paths through a ASM(Antenna-Switch-Module).
Page 20: Gsm Mode
GMSK or 8-PSK processing. These filter circuits include DC offset corrections. The filter outputs are buffered and passed on to the MSM7227 IC for further processing asshown in Figure 1-4. Copyright © 2010 LG Electronics. Inc. All right reserved. - 21 -...
Page 21 GSM application. Both high-band and low band outputs are followed by resistive pads to ensure that the load presented to the outputs remains close to 50ohm. LGE Internal Use Only - 22 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 22: Umts Mode
GSM Rx to the MSM IC. The UMTS baseband outputs are turned off when the RTR6285 is downconverting GSM signals and on when the UMTS is operating. [Figure 1-4] UMTS Receiver Inputs Topologies Copyright © 2010 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only...
Page 23 FVCO to equal FRF. The RTR6285 IC is able to support UMTS 2100/1900/1800/1700 and 850 mode transmitting. This design guideline shows only UMTS 2100 applications. LGE Internal Use Only - 24 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 24 3. TECHNICAL BRIEF LGE Internal Use Only Challe [Figure 1.5] RTR6285 IC Functional Block Diagram Copyright © 2010 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only Only for training and service purposes...
Page 25: Gps Receiver
GPS LNA. The impedance transformer circuit topology is shown in Figure 1-6. [Figure 1.6] GPS Input Network Topology LGE Internal Use Only - 26 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 26: Lo Generation And Distribution Circuit
With the integrated fractional-N PLL synthesizers, the RTR6285 ICs have the advantage of more flexible loop bandwidth control, fast lock time, and low-integrated phase error. Copyright © 2010 LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use Only...
Page 27: Off-Chip Rf Components
The power amplifier is manufactured on an advanced InGaP HBT (hetero-junction Bipolar Transistor) MMIC microwave monolithic integrated circuit) technology offering state-of-the-art reliability, temperature stability and ruggedness [Figure 1.7] ACPM-5201 (W2100) LGE Internal Use Only - 28 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 28 This power amplifier module operates in the 880-915MHz bandwidth. The ACPM-5308 meets stringent UMTS linearity requirements up to 28dBm output power. [Figure 1.8] ACPM-5308 (W900) Copyright © 2010 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only...
Page 29 MSM side, and isolate from digital logic and clock traces with ground on both sides, plus ground above and below if routed on internal layers. LGE Internal Use Only - 0 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 30 The Enable input controls the initial turn-on of the PAC circuitry to minimize battery drain. The integrated power amplifier control (PAC) function provides envelope amplitude control by reducing sensitivity to input drive, temperature, power supply, and process variation. Copyright © 2010 LG Electronics. Inc. All right reserved. - 1 - LGE Internal Use Only...
Page 31 3. TECHNICAL BRIEF [Figure 1.9] SKY77544 Block Diagram [Figure 1.10] SKY77544 Control Logic LGE Internal Use Only - 2 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32 The RF2185 is packaged in a compact 3.3 mm x 2.1 mm x 1.0 mm package with low external component count required to achieve the best-in-class performance. Copyright © 2010 LG Electronics. Inc. All right reserved. - - LGE Internal Use Only...
Page 33: Digital Baseband(Dbb/Msm7227)
Vocoder support (GSM -HR, FR, EFR, AMR, and AMR-WB/+) Advanced 12 × 12 ×1.05 mm, 0.4 mm pitch, 560 NSP LGE Internal Use Only - 4 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34: Hardware Architecture
5P Micro 5P Micro Coin cell Battery 1500mAh MAX14528 Challenge Figure. Simplified Block Diagram Figure. Simplified Block Diagram Copyright © 2010 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
Page 35 Power Block Diagram <Power Block> LGE Internal Use Only <Power Block> Challen Figure. Simplified Block Diagram Figure. Simplified Block Diagram LGE Internal Use Only - 6 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 36 CAM DATA[0:7] WLED_PWR CHARGE CHARGE LCD_BL_EN PUMP PUMP WLED[1:6] Figure. Simplified Block Diagram Figure. Simplified Block Diagram Challenge Copyright © 2010 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 37 MOTOR DRIVER GPIO28 DRIVER MOTOR- Q_Coin Q_Coin SM100 SM100 MOTOR_LDE_EN MOTOR MOTOR GPIO57 3.3V LDO 3.3V LDO Challenge LGE Internal Use Only - 8 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 38: Subsystem (Msm7227)
GSM support includes: GSM release ‘99 (circuit switching) GPRS (packet switching) EDGE E2 power class for 8 PSK Copyright © 2010 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 39: Vocoder Subsystem
Noise Suppression (NS), and programmable, 13-tap, Type-I, FIR, Tx/Rx compensation filters. The MSM7227 device’s integrated ARM9TDMI processor downloads the firmware into the QDSP4000 and configures QDSP4000 to support the desired functionality. LGE Internal Use Only - 40 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 40 USB operations at low-speed and full-speed. The secondary controller is the FS USB-UICC port, which only supports host mode functionality. Copyright © 2010 LG Electronics. Inc. All right reserved. - 41 - LGE Internal Use Only...
Page 41: Power Block
Interrupt Manager for time-critical information. Another dedicated IC Interface circuit monitors multiple trigger events and controls the power-on sequence. LGE Internal Use Only - 42 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 44 (3.2V). The charging current is set to 80mA. Parameter Unit Trickle Current Figure. PM7540 Charging Flow (TC Charging) Copyright © 2010 LG Electronics. Inc. All right reserved. - 45 - LGE Internal Use Only Only for training and service purposes...
Page 45 • Nominal Battery Capacity : 1500mAh • Charging time : Max. 3h 30m • Full charge indication current (icon stop current) : 50mA LGE Internal Use Only - 46 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46 Low Battery Pop-up (No call) 0% ~ 3% : Level change Critical Low Battery Pop-up popup (No call) POWER OFF Copyright © 2010 LG Electronics. Inc. All right reserved. - 47 - LGE Internal Use Only Only for training and service purposes...
Page 47: External Memory Interface
- Support for 8 bit/16bit wide NAND flash. - Support for parallel LCD interfaces, port mapped of memory mapped(8 or 16 bit) LGE Internal Use Only - 48 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 48 2Gbit Mobile DDR SDRAM(64Mb x32) / 4Gbit NAND Flash Interface Spec Part Name Product Gr Maker Operation Voltage Speed K524G2GACB-A050 NAND 1.8V 42ns SDRAM 1.8V 200MHz Copyright © 2010 LG Electronics. Inc. All right reserved. - 49 - LGE Internal Use Only Only for training and service purposes...
Page 49: W Sub System
GPIO_72 GPIO_73 GPIO_74 Ant Sel 0,1,2,3 GPIO_75 Figure. RF Interface Block Diagram Challenge Figure. RF Interface Block Diagram LGE Internal Use Only - 50 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50 * SLEEP CLK : External reference oscillator input. (32.768KHz) * FM_R : Right audio line output – digital input data. * FM_L : Left audio line output – digital frame synchronization. Copyright © 2010 LG Electronics. Inc. All right reserved. - 51 - LGE Internal Use Only...
Page 51 BT_PCM_IN 32.768KHz BT_PCM_CLK GPIO71 BT_PCM_CLK BT_WAKEUP GPIO95 BT_GPIO_0 26MHz BT_HOST_WAKEUP GPIO83 BT_GPIO_1 Figure. Wifi/BT/FM Interface Block Diagram Challenge LGE Internal Use Only - 52 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 52 GPIO_86 UART3_RX Data_Rx GPIO_86 UART3_RX Data_Rx GPIO_87 UART3_TX Data_Tx GPIO_87 UART3_TX Data_Tx Table. UART Interface Table. UART Interface Copyright © 2010 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
Page 53 (USBPHY_REXT) and a USB system clock pin which the USB PHY uses to lock its internal PLL (SYS_CLK) Figure. HS-USB connections and architecture LGE Internal Use Only - 54 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 54: Camera Key
Refer to the circuit. SEND POWER KEY / END HOME SEND KPD_PWR_N KEY_COL[2] KEY_COL[2] KEY_ROW[0] KEY_ROW[1] Figure. Front key Copyright © 2010 LG Electronics. Inc. All right reserved. - 55 - LGE Internal Use Only Only for training and service purposes...
Page 55 There are 2 White side view LED, 2 white LED in key backlight circuit Those LEDs are driven by KPD_DRV_N1/2 line from PM7540. Refer to the circuit. Figure. KEY Backlight LGE Internal Use Only - 56 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 56 R607 TOUCH_X1XR R606 TOUCH_Y2YU R605 TOUCH_X2XL D606 Figure. Touch window Sensor Schematic Figure. Touch window Sensor Block Diagram Copyright © 2010 LG Electronics. Inc. All right reserved. - 57 - LGE Internal Use Only Only for training and service purposes...
Page 57: Audio And Sound
KJA-PH-2-0171 Challenge Figure. Block diagram of Audio & Sound path Figure. Block diagram of Audio & Sound path LGE Internal Use Only - 58 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 58 The DSP audio processing is configured through the QDSP5000 command types and is not directly controlled by the microprocessor. Copyright © 2010 LG Electronics. Inc. All right reserved. - 59 - LGE Internal Use Only Only for training and service purposes...
Page 59 3. TECHNICAL BRIEF LGE Internal Use Only Figure. Detailed diagram of MSM7227 audio interface Challenge LGE Internal Use Only - 60 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 60 DC offset correction to less than 1mV Guarantees a pop/click-free headphone start up. The WM9093 is available in a 2.0mm × 2.5mm 20-bump CSP package. Copyright © 2010 LG Electronics. Inc. All right reserved. - 61 - LGE Internal Use Only...
Page 61 3. TECHNICAL BRIEF Figure. Detailed diagram of WM9093 audio interface LGE Internal Use Only - 62 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 62 M5_MIC FB504 C562 C563 R537 R538 C560 C561 L503 C564 270n EAR_SENSE STATE LOW(DEFAULT) UNMATING HIGH MATING EAR_GND Copyright © 2010 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
Page 63 RCV_N CPVSS MIC_1N VREG_MSMP_2.6V C513 2.2u C512 C523 2.2u 2.2u C522 C517 AUDIO_I2C_SCL 2.2u 2.2u AUDIO_I2C_SDA EAR_GND|GND VREG_HPVDD_1.8V LGE Internal Use Only - 64 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 64: Display
WLED4 +VPWR WLED5 WLED2 WLED3 WLED1 C607 C603 2.2u 2.2u VA609 Figure. Schematic of LCD connector (Main Board) Copyright © 2010 LG Electronics. Inc. All right reserved. - 65 - LGE Internal Use Only Only for training and service purposes...
Page 65 3. TECHNICAL BRIEF Table. Interface between LCD Module and MAIN Board LGE Internal Use Only - 66 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 66: Motion Sensor
MOTION_INT MOTION_I2C_SCL R612 C613 C612 100K 0.1u 0.1u Figure. Motion Sensor Schematic Figure. Motion Sensor Schematic Block Diagram Copyright © 2010 LG Electronics. Inc. All right reserved. - 67 - LGE Internal Use Only Only for training and service purposes...
Page 67: Vibrators
U501 R504 150K R503 C501 C557 C500 0.1u Figure. Linear Moter Drive IC Schematic Figure. Vibrator Block Diagram LGE Internal Use Only - 68 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68: Compass Sensor
COMPASS_INT RSTN COMPASS_RESET CAD0 CAD1 COMPASS_I2C_SDA COMPASS_I2C_SCL U602 Figure. Compass Sensor Schematic Figure. Compass Sensor Schematic Block Diagram Copyright © 2010 LG Electronics. Inc. All right reserved. - 69 - LGE Internal Use Only Only for training and service purposes...
Page 69: Main Features
- JPEG en/decoder - Supports Bluetooth and HS-USB - Supports WLAN - Supports FM Radio - 1500 mAh (Li-Ion Polymer) LGE Internal Use Only - 70 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 70: Main Components
2. GT540 Main Component Logic Camera Conn. WIFI/BT/FM PMIC Logic & Audio USIM Battery Conn. Main board, BOTTOM Copyright © 2010 LG Electronics. Inc. All right reserved. - 71 - LGE Internal Use Only Only for training and service purposes...
Page 71 2. GT540 Main Component 2. GT540 Main Component Logic Volume key Search key Camera key Main board, Top LGE Internal Use Only - 72 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 72 3. TECHNICAL BRIEF 2. Main Components 2. GT540 Main Component 2. GT540 Main Component Micro SD Vibrator Speaker Sub board Copyright © 2010 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 73 FL101, FL102, FL103, FL108 GSM RX SAW Filter Filter FL104 WCDMA (II) TX SAW FL110 SW100 RF Antenna connector Filter LGE Internal Use Only - 74 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 74 MSM7227 U601 BLU CHARGE PUMP U300 Memory U600 Motion Sensor X500 26MHz TCXO IC500 WM9093 U501 MOTOR DRIVER Copyright © 2010 LG Electronics. Inc. All right reserved. - 75 - LGE Internal Use Only Only for training and service purposes...
Page 75 Q400 FET for Batt Charging U401 MUIC U402 OVP IC U102 GPS LNA U503 WIFI & BT module LGE Internal Use Only - 76 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 76 CN605 Touch screen Connector X400 RTC Crystal CN502 Front Key Connector J500 USIM Connector MIC500 Microphone Battery Connector Copyright © 2010 LG Electronics. Inc. All right reserved. - 77 - LGE Internal Use Only Only for training and service purposes...
Page 77: Trouble Shooting
LGE Internal Use Only - 78 - - 78 - Copyright © 2010 LG Electronics. Inc. All right reserved. Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes Only for training and service purposes...
Page 78: Signal Path
SW100 RF Antenna Connector FL100 WCDMA (I) Duplexer 4.2 SIGNAL PATH Copyright © 2010 LG Electronics. Inc. All right reserved. - 79 - LGE Internal Use Only Only for training and service purposes GSM850/GSM900/DCS/PCS’s RX/TX Signal PATH A. GSM850/GSM900/DCS1800/PCS1900 RX PATH...
Page 79: Signal Path
4.2 SIGNAL PATH GSM850/GSM900/DCS/PCS’s RX/TX Signal PATH A. GSM850/GSM900/DCS1800/PCS1900 RX PATH B. GSM850/GSM900/DCS1800/PCS1900 TX PATH C. COMMON TX/RX PATH LGE Internal Use Only - 80 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 80 WCDMA BAND I and VIII RX Signal PATH D1. WCDMA 2100 RX PATH E1. WCDMA 900 RX PATH F1. COMMON TX/RX PATH Copyright © 2010 LG Electronics. Inc. All right reserved. - 81 - LGE Internal Use Only Only for training and service purposes...
Page 81 WCDMA I,II and VIII Band TX Signal PATH D2. WCDMA 2100 TX PATH E2. WCDMA 900 TX PATH F1. COMMON TX/RX PATH LGE Internal Use Only - 82 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 83: Checking Tcxo Block
The output frequency (19.2MHz) of TCXO (X101) is used as the reference one of RTR6285 and PM7540 internal VCO. Schematic of the Crystal Part (19.2MHz) LGE Internal Use Only - 84 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 84 2.4V ≥ Voltage ≥ 0.4V Check the MSM7227A Check TP3 Check soldering and 19.1 MHz Signal components TCXO is OK Copyright © 2010 LG Electronics. Inc. All right reserved. - 85 - LGE Internal Use Only Only for training and service purposes...
Page 85: Checking Gsm Tx Module(Gsm Pam+Fem) Block
4. Trouble Shooting 4.4 Checking GSM TX Module(GSM PAM+FEM) BLOCK LGE Internal Use Only - 86 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 86 PCS(1930-1990 MHz) G1 O1 L103 C164 5.6n L110 G2 O2 5.6n ANT_SEL3 1.2n ANT_SEL2 RX_PCS_P 1960MHz ANT_SEL0 ANT_SEL1 L109 Copyright © 2010 LG Electronics. Inc. All right reserved. - 87 - LGE Internal Use Only Only for training and service purposes...
Page 87 1.2V < Voltage < 3V Check the TP1(VBATT) Check the Logic in each mode Check the Logic In each mode LGE Internal Use Only - 88 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 88: Checking Wcdma Block
3. Check RF Tx Level 4. Check PAM Block Refer to 1.5.4 5. Check RF Level 6. Ro-download SW & Cal. Copyright © 2010 LG Electronics. Inc. All right reserved. - 89 - LGE Internal Use Only Only for training and service purposes...
Page 89 PGND10 C179 C113 C155 C162 FL10 G1 O1 C164 L110 G2 O2 5.6n LGE Internal Use Only - 90 - Copyright © 2010 LG Electronics. Inc. All right reserved. ANT_SEL3 ANT_SEL2 1960MHz Only for training and service purposes ANT_SEL0 ANT_SEL1...
Page 91 Check TP3 Over 21dBm? Check Duplexer Check TP4 Over 7dBm? Check RTR6285 Check PAM Block Refer to 1.5.4 LGE Internal Use Only - 92 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 92: Checking Pam Block
When PAM is under the operation of high power mode (WCDMA_PA_R0(C142):Low), PAM OUT power must be over 21 dBm PAM IN power must be under 10 dBm Copyright © 2010 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only...
Page 93 RF Tx Level is OK Check TP2 PA_RO ≥ 2.6V Check MSM7227A Check TP1 Over 10 dBm? Check RTR6285 Change the board LGE Internal Use Only - 94 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 94 4. Trouble Shooting 4.5.3. Checking RF Rx Level Test Point (RF Rx Level) Copyright © 2010 LG Electronics. Inc. All right reserved. - 95 - LGE Internal Use Only Only for training and service purposes...
Page 95 VBAT PGND6 PGND12 PGND11 C153 PGND10 C179 C113 C155 C162 C164 L110 5.6n ANT_SEL3 ANT_SEL2 ANT_SEL0 ANT_SEL1 L109 LGE Internal Use Only - 96 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 97 Check TP3 Signal exist? Check Duplexer Check TP4 Signal exist? Check RTR6285 and Rx SAW filter Change the board LGE Internal Use Only - 98 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98: Checking Gsm Block
1. Check TCXO Block 2. Check ANT_SW Module 3. Check RF TRX Level 4. Ro-download SW & Cal. Copyright © 2010 LG Electronics. Inc. All right reserved. - 99 - LGE Internal Use Only Only for training and service purposes...
Page 100 If DCS/PCS(TP3) over 6 dBm? No Problem Check RTR & PAD Check soldering and components Still exist Problem Change the board Copyright © 2010 LG Electronics. Inc. All right reserved. - 101 - LGE Internal Use Only Only for training and service purposes...
Page 101: Checking Rf Rx Block
4. Trouble Shooting 4.6.4 Checking RF RX BLOCK LGE Internal Use Only - 102 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 102 Check TP1 Signal exist? Check RF Switch (M/S) Check TP2 Signal exist? Check FEM Block Refer 1.4 Change the board Copyright © 2010 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
Page 103: Gps/Wifi/Bt Rf Components
ANT PAD Reference Description GND PAD ANT104 ANT103 ANT PAD U102 GPS LNA GND PAD ANT104 U102 GPS LNA LGE Internal Use Only - 104 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 104: Only For Training And Service Purposes
4. Trouble Shooting Reference Description ANT500 ANT PAD GND PAD ANT501 U503 BT/WIFI Module Copyright © 2010 LG Electronics. Inc. All right reserved. - 105 - LGE Internal Use Only Only for training and service purposes...
Page 105: Gps/Wifi/Bt Trouble Shooting
L120 C176 C237 VREG_RFRX1_2.7V 3.3n C173 C174 100p 0.1u R115 FIL_OUT GPS_LNA_EN 100p C175 U102 GPS_IN C167 1.2n LGE Internal Use Only - 106 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 106 Check TP1 About 2.7V? Check power LRC filter soldering Check TP2 About 2.6V? Check SW and NV item Change the board Copyright © 2010 LG Electronics. Inc. All right reserved. - 107 - LGE Internal Use Only Only for training and service purposes...
Page 107 4. Trouble Shooting START 1. Check the Power 2. Check the Clock 3. Check the Module Component Change LGE Internal Use Only - 108 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 108: Power On Troubleshooting
Change the Main board power up currently? is clock OK? TP8:19.2M Change the Main board TP9: 32.768Khz Redownload SW image Copyright © 2010 LG Electronics. Inc. All right reserved. - 109 - LGE Internal Use Only Only for training and service purposes...
Page 111 Route together SLEEP_CLK SLEEP_CLK C407 AMUX_OUT AMUX_OUT CM315_12_5PF KPD_PWR_N KPD_PWR_N D401 PON_RESET_N nPON_RST PS_HOLD PS_HOLD C431 JTAG_PS_HOLD R409 200K LGE Internal Use Only - 112 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 112: Charger Troubleshooting
- Check the charger (TA or USB Cable) connector - Check the OVP Circuit - Check the charging current Path - Check the battery Copyright © 2010 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 113 Check PMIC(U403) SMT status by X-ray Exchange U403 or Change the main board and Retest Figure. Charger Troubleshooting Flow LGE Internal Use Only - 114 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 115: Usb Trouble
USB Initial sequence of GT540 is : USB connected to GT540 VCHG_VBUS go to 5V VERG_MSME_1.8V is about 1.8V USB_CLK is OK USB work LGE Internal Use Only - 116 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 116 TP2 (Clock) is OK? Check U251 TP3 is about to 3.3V? Check U400 Change the Main board Figure. USB Troubleshooting Flow Copyright © 2010 LG Electronics. Inc. All right reserved. - 117 - LGE Internal Use Only Only for training and service purposes...
Page 118: Audio Trouble
The sine wave appear at SUB_PCB Con. Speaker Solder pads? or Change SUB_PCB or Change SPK Madule Can you hear the tone? Copyright © 2010 LG Electronics. Inc. All right reserved. - 119 - LGE Internal Use Only Only for training and service purposes...
Page 119 RCV_N CPVSS VREG_MSMP_2.6V TP2(R514) C513 2.2u C512 C523 2.2u 2.2u C522 C517 AUDIO_I2C_SCL 2.2u 2.2u AUDIO_I2C_SDA EAR_GND|GND VREG_HPVDD_1.8V LGE Internal Use Only - 120 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 120 Change the Main board TP3(FB502), TP4(FB503)? Check the 3.5pi Ear-jack Can you hear the tone or sound? or change SPK Module Copyright © 2010 LG Electronics. Inc. All right reserved. - 121 - LGE Internal Use Only Only for training and service purposes...
Page 121 FB504 TP4(FB502) C562 C563 R537 R538 C560 C561 L503 C564 270n EAR_SENSE STATE LOW(DEFAULT) UNMATING HIGH MATING EAR_GND LGE Internal Use Only - 122 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 122 Check the Audio subsystem & pads of spaker? SUB_PCB Con. or Change SUB_PCB Check the Speaker Module Can you hear the tone? Copyright © 2010 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
Page 123 CPVDD RCV_N CPVSS VREG_MSMP_2.6V TP1(R520) C513 2.2u C512 C523 2.2u 2.2u C522 C517 AUDIO_I2C_SCL 2.2u 2.2u AUDIO_I2C_SDA EAR_GND|GND LGE Internal Use Only - 124 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 124 Change the MIC at TP2(R508), TP3(R509)? Can you scoping some sound Change the Main board signal at TP4(C257)? Work well? Copyright © 2010 LG Electronics. Inc. All right reserved. - 125 - LGE Internal Use Only Only for training and service purposes...
Page 125 R507 TP1(C508) TP4(C257) TP2(R508) C509 C508 R510 2.2K C504 R508 MIC_1P C506 C510 MIC500 C505 R509 MIC_1N TP3(R509) LGE Internal Use Only - 126 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 126 Make some sound or voice to MIC Can you scoping some sound Change the Main board signal at TP2(FB504)? Work well? Copyright © 2010 LG Electronics. Inc. All right reserved. - 127 - LGE Internal Use Only Only for training and service purposes...
Page 127 EAR_L M4_L HS_MIC M5_MIC FB504 C562 C563 R537 R538 C560 C561 L503 C564 270n EAR_SENSE LOW(DEFAULT) HIGH EAR_GND LGE Internal Use Only - 128 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 128: M Af Camera Trouble
Check the EMI Filter(FL601, FL602) Change the camera Change the Filter(FL601, FL602) Camera is OK Change the Main board Copyright © 2010 LG Electronics. Inc. All right reserved. - 129 - LGE Internal Use Only Only for training and service purposes...
Page 129 AC15 R277 GPIO_36 KEY_COL[2] R252 KEY_ROW[0] GPIO_37 AF15 R273 GPIO_38 KEY_ROW[1] AB16 R274 GPIO_39 KEY_ROW[2] AC16 EMI Filter LGE Internal Use Only - 10 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 130 FLT_CAM_VSYNC FLT_CAM_DATA[4] FLT_CAM_HSYNC FLT_CAM_DATA[5] FLT_CAM_DATA[6] TP600 3MCAM_IO_OFF FLT_CAM_DATA[7] VREG_CAM_AF_2.8V C606 C602 C604 C605 VA608 4.7u 2.2u 2.2u 2.2u Copyright © 2010 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 131: Main Lcd Trouble
LCD display OK? Check Power Change the LCD module VREG_LCD_1.8V(TP1) VREG_LCD_2.8V(TP2) Change the Main board The LCD works LGE Internal Use Only - 12 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 132 TP601 Pin#20 : PWM WLED6 TP1 TP2 WLED4 +VPWR WLED5 WLED2 WLED3 WLED1 C607 C603 2.2u 2.2u VA609 Copyright © 2010 LG Electronics. Inc. All right reserved. - 1 - LGE Internal Use Only Only for training and service purposes...
Page 133: Sim Detect Troubleshooting
Change SIM card Change SIM Card Work well? Work well? Change the Main board Change the Main board LGE Internal Use Only - 14 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 134 SIM_RST SIM_CLK SIM_IO RESERVED1 RESERVED2 GND2 GND1 J500 C524 C525 C527 C526 C528 0.1u Figure .USIM part schematics Copyright © 2010 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
Page 135: Side Key Troubleshooting
Figure. Volume key Troubleshooting Flow Figure. Volume key Troubleshooting Flow Figure. Volume Key TEST Point Figure. Volume Key TEST Point LGE Internal Use Only - 16 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 136 Figure. Volume key Troubleshooting Flow Figure. Volume key Troubleshooting Flow Figure. Camera Key TEST Point Figure. Camera Key TEST Point Copyright © 2010 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
Page 137: Vibrator
Check SUB FPCB Check an U501 SMT Status by X-ray, TP3 is 3.3V? Exchang it TP4 is high? Check SW LGE Internal Use Only - 18 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 138 150K BYPASS _SHUTDOWN VIB_M R502 R501 VIB_P KPD_PWR_N R500 VIB_PWM U501 R504 150K R503 C501 C557 C500 0.1u Copyright © 2010 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
Page 139: Motion Sensor On/Off Trouble
-. MOTION_I2C_SDA 1) Measurement -. MOTION_I2C_SCL -. VREG_MSMP_2.6V : 2.6V -. MOTION_INT : High enable -. MOTION_I2C_SDA -. MOTION_I2C_SCL LGE Internal Use Only - 140 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 140 4. Trouble Shooting VREG_MSMP_2.6V VREG_MSMP_2.6V TP1(R612) U600 VDDIO MOTION_I2C_SDA MOTION_INT MOTION_I2C_SCL R612 C613 C612 100K 0.1u 0.1u TP3(R610) TP2(R609) Copyright © 2010 LG Electronics. Inc. All right reserved. - 141 - LGE Internal Use Only Only for training and service purposes...
Page 141: Compass Sensor On/Off Trouble
-. VREG_COMPASS_2.7V : 2.7V 1) Measurement : Main board -. COMPASS_I2C_SDA -. VREG_COMPASS_2.7V : 2.7V -. COMPASS_I2C_SCL -. COMPASS_I2C_SDA -. COMPASS_I2C_SCL LGE Internal Use Only - 142 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 142 4. Trouble Shooting VREG_COMPASS_2.6V C610 0.1UF C611 0.1UF COMPASS_INT RSTN COMPASS_RESET CAD0 CAD1 COMPASS_I2C_SDA COMPASS_I2C_SCL TP1(R604) U602 TP2(R603) Copyright © 2010 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
Page 143: Download
GT540 GT540 LGE Internal Use Only - 144 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 164 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 144 5. Download 5. DOWNLOAD GT540 GT540 GT540 GT540 Copyright © 2010 LG Electronics. Inc. All right reserved. - 145 - LGE Internal Use Only - 165 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only...
Page 145 GT540 GT540 LGE Internal Use Only - 146 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 166 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 146 5. Download 5. DOWNLOAD GT540 GT540 Copyright © 2010 LG Electronics. Inc. All right reserved. - 147 - LGE Internal Use Only - 167 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 147 5. DOWNLOAD 5. DOWNLOAD 5. DOWNLOAD - 168 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 148 - Copyright © 2010 LG Electronics. Inc. All right reserved. - 168 - LGE Internal Use Only Copyright ©...
Page 148 5. Download 5. DOWNLOAD Copyright © 2010 LG Electronics. Inc. All right reserved. - 149 - LGE Internal Use Only - 169 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 149 5. Download 5. DOWNLOAD LGE Internal Use Only - 150 - Copyright © 2010 LG Electronics. Inc. All right reserved. - 170 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 150 5. Download 5. DOWNLOAD Copyright © 2010 LG Electronics. Inc. All right reserved. - 151 - LGE Internal Use Only - 171 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 151 5. Download 5. DOWNLOAD LGE Internal Use Only - 152 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 172 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 152 5. Download 5. DOWNLOAD Copyright © 2010 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only - 173 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 153 GT540 GT540 LGE Internal Use Only - 154 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 174 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 154 5. Download 5. DOWNLOAD GT540 GT540 Copyright © 2010 LG Electronics. Inc. All right reserved. - 155 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. - 175 - LGE Internal Use Only Only for training and service purposes...
Page 155 GT540 GT540 GT540 LGE Internal Use Only - 156 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 176 - Copyright © 2010 LG Electronics. Inc. All right reserved. - 176 - LGE Internal Use Only Copyright ©...
Page 156: Block Diagram
Key LED MAX14526 Key LED MAX14526 PM7540 PM7540 5P Micro 5P Micro Coin cell Battery 1500mAh MAX14528 Challenge Copyright © 2010 LG Electronics. Inc. All right reserved. - 157 - LGE Internal Use Only Only for training and service purposes...
Page 157 WCDMA_2100_ON PA_ON0 WPRXSE1_IN GPCS_INP PCS1900 GPCS_INN VDDA GPIO_58 RX SAW GPIO_72 GPIO_73 GPIO_74 Ant Sel 0,1,2,3 GPIO_75 Challenge LGE Internal Use Only - 158 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 158 6. Block diagram Swift Power Block Diagram LGE Internal Use Only Challen Copyright © 2010 LG Electronics. Inc. All right reserved. - 159 - LGE Internal Use Only Only for training and service purposes...
Page 159 CAM_PCLK MSM7227 MSM7227 LCD_MAKER_ID CAM_VSYNC CAM_HSYNC FILTER FILTER CAM DATA[0:7] WLED_PWR CHARGE CHARGE LCD_BL_EN PUMP PUMP WLED[1:6] Challenge LGE Internal Use Only - 160 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 160 AUDIO_I2C_SCL GPIO27 AUDIO_I2C_SDA GPIO17 MSM7227 VMIC_BIAS MIC_BIAS MIC_1P MIC_1P MIC_1N Ear-Jack HS_MIC connector MIC2P EAR_SENSE GPIO29 KJA-PH-2-0171 Challenge Copyright © 2010 LG Electronics. Inc. All right reserved. - 161 - LGE Internal Use Only Only for training and service purposes...
Page 161 PM7540 GPIO69 BT_PCM_OUT BT_PCM_DOUT GPIO68 BT_PCM_IN 32.768KHz BT_PCM_CLK GPIO71 BT_PCM_CLK BT_WAKEUP GPIO95 BT_GPIO_0 26MHz BT_HOST_WAKEUP GPIO83 BT_GPIO_1 Challenge LGE Internal Use Only - 162 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 162 MOTOR DRIVER GPIO28 DRIVER MOTOR- Q_Coin Q_Coin SM100 SM100 MOTOR_LDE_EN MOTOR MOTOR GPIO57 3.3V LDO 3.3V LDO Challenge Copyright © 2010 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
Page 164: Circuit Diagram
R115 R119 1950MHz FIL_OUT GPS_LNA_EN 100p PDET_IN U102 C175 GPS_IN WCDMA_2100_ON C167 C219 1.2n LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. - 165 - LGE Internal Use Only Only for training and service purposes...
Page 165 R262 TP253 REMOTE_PWR_ON UTXD TP256 UART_FLAG ANT250 FEED OJ251 OJ253 ANTPAD_GR700 OJ255 ESD PROTECTION LGE Internal Use Only LGE Internal Use Only - 166 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 166 VDD_P7_1 DQS3 SDRAM_DQS3 GND_A16 VDD_P7_2 VREG_MSMC2_1.25V VREG_MSMC1_1.25V VREG_MSME_1.8V VREG_MSMA_2.6V VREG_MSMP_2.6V Cap for MSM7227 Power LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. - 167 - LGE Internal Use Only Only for training and service purposes...
Page 167 1.30V 200K Rev.1.0 150K 300K 1.73V Rev.1.1 150K 430K 1.93V Rev.1.2 150K 680K 2.13V LGE Internal Use Only LGE Internal Use Only - 168 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 168 C527 C526 EAR_SENSE STATE C528 0.1u LOW(DEFAULT) UNMATING SIM_IO SIM_RST HIGH MATING D500 EAR_GND LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. - 169 - LGE Internal Use Only Only for training and service purposes...
Page 169 TOUCH_X1XR CN603 R606 KEY_ROW[0] KEY_ROW[0] TOUCH_Y2YU R605 KEY_ROW[1] KEY_COL[0] TOUCH_X2XL KEY_COL[1] KEY_ROW[1] KEY_ROW[2] D606 LGE Internal Use Only LGE Internal Use Only - 170 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 170 MMC_DATA[1] DAT1 COVER_DETECT1 MMC_COVER_DETECT C705 100n L700 CN701 SPK_RCV+ SPK_RCV- L701 100n C702 C703 LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. - 171 - LGE Internal Use Only Only for training and service purposes...
Page 171 MMC_DATA[1] DAT1 COVER_DETECT1 MMC_COVER_DETECT C705 100n L700 CN701 SPK_RCV+ SPK_RCV- L701 100n C702 C703 LGE Internal Use Only LGE Internal Use Only - 172 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 172 KPD_PWR_N KPD_DRV_N1 KPD_DRV_N2 KEY_ROW[0] LD800 KEY_COL[2] KEY_COL[2] KEY_ROW[1] KPD_DRV_N2 KPD_PWR_N KEY_COL[2] KEY_ROW[0] KEY_ROW[1] TP800 LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. - 173 - LGE Internal Use Only Only for training and service purposes...
Page 173 7. CIRCUIT DIAGRAM GT540_SIDEKEY_CAMERA-V1.0 HOT_KEY CAMERA KEY KB100 SW100 CN100 KEY_ROW[0] KEY_ROW[1] capture KEY_COL[1] KEY_ROW[2] LGE Internal Use Only LGE Internal Use Only - 174 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 174 7. CIRCUIT DIAGRAM GT540_VOL_SIDEKEY_V1.0 KEY_VOL_DOWN KEY_VOL_UP KB100 KB101 CN100 KEY_ROW[1] KEY_COL[0] KEY_ROW[0] LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. - 175 - LGE Internal Use Only Only for training and service purposes...
Page 180: Pcb Layout
R536 Cannot use Compass VA506 R608 R607 VA501 VA505 R605 R606 R539 R509 C505 R508 C504 R510 R507 Copyright © 2010 LG Electronics. Inc. All right reserved. - 181 - LGE Internal Use Only Only for training and service purposes...
Page 181 Cannot power on U100 FEM WCDMA/GSM TX,RXSwitch and GSM PAM MIC500 Microphone Cannot use MIC SW100 RF Cable connector LGE Internal Use Only - 182 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 182 9. PCB LAYOUT CN701 BtoB Conn. for Main Board Connection CN701 BtoB Conn. for Main Board Connection Copyright © 2010 LG Electronics. Inc. All right reserved. - 183 - LGE Internal Use Only Only for training and service purposes...
Page 183 CN701 Speaker Conn Cannot use Speaker VB700 Vibrator Conn Cannot use Vibrator S700 MicroSD socket Cannot use MICROSD LGE Internal Use Only - 184 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 184 KB3 Home Key KB6 Send Key Cannot use Home Cannot use Send KB6 Send Key Cannot use Send Copyright © 2010 LG Electronics. Inc. All right reserved. - 185 - LGE Internal Use Only Only for training and service purposes...
Page 186 9. PCB LAYOUT KB100 Search Key Cannot use Search SW100 Camera/AF Key Cannot use Camera/AF Copyright © 2010 LG Electronics. Inc. All right reserved. - 187 - LGE Internal Use Only Only for training and service purposes...
Page 188 9. PCB LAYOUT KB100, KB101 Volume Key Cannot use Volume Control Copyright © 2010 LG Electronics. Inc. All right reserved. - 189 - LGE Internal Use Only Only for training and service purposes...
Page 190: Calibration & Rf Auto Test Program (Tachyon)
10. Calibration & RF Auto Test Program (Tachyon) 10. Calibration & RF Auto Test Program (Tachyon) 10. Calibration & RF Auto Test Program (Tachyon) Copyright © 2009 LG Electronics. Inc. All right reserved. - 233 - LGE Internal Use Only Only for training and service purposes Copyright ©...
Page 191 ‘MODEL NAME’_Sequence.XML It is described a testing procedures. LGE Internal Use Only - 234 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 192 - Copyright © 2010 LG Electronics. Inc. All right reserved.
Page 192 10. Calibration & RF Auto Test Program (Tachyon) 10. Calibration & RF Auto Test Program (Tachyon) Copyright © 2009 LG Electronics. Inc. All right reserved. - 235 - LGE Internal Use Only Only for training and service purposes Copyright © 2010 LG Electronics. Inc. All right reserved.
Page 193 10. Calibration & RF Auto Test Program (Tachyon) 10. Calibration & RF Auto Test Program (Tachyon) Copyright © 2009 LG Electronics. Inc. All right reserved. - 237 - LGE Internal Use Only Only for training and service purposes LGE Internal Use Only - 194 - Copyright ©...
Page 194 Phone Test Mode_GT540 1. Enter the Engineer Menu 2. Tap 2. Device Test 3. Tap 1. Auto All Test Copyright © 2010 LG Electronics. Inc. All right reserved. - 195 - LGE Internal Use Only Only for training and service purposes...
Page 195 Touch the target to calibrate touch accuracy with move to the next a stylus pen step if 5 points are tabbed LGE Internal Use Only - 196 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 196 - Camera key Button -MENU key 2. Check Pass of SD & SIM Key Function is OK Display Compass info Copyright © 2010 LG Electronics. Inc. All right reserved. - 197 - LGE Internal Use Only Only for training and service purposes...
Page 197 Sound On IF OK, press “MENU” key Ringtone (MP3) is played regularly Press MENU key Move to next step LGE Internal Use Only - 198 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 198 Description (4) Vibrator Test Vibrator On IF OK, press “MENU” key Press MENU key Move to next step Copyright © 2010 LG Electronics. Inc. All right reserved. - 199 - LGE Internal Use Only Only for training and service purposes...
Page 199 (5) GPS Test GPS On IF OK, press “MENU” key Display GPS info Press MENU key Move to next step LGE Internal Use Only - 200 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 200 (6) Touch Touch Test Test Start IF OK, press “MENU” key Press MENU key Move to next step Copyright © 2010 LG Electronics. Inc. All right reserved. - 201 - LGE Internal Use Only Only for training and service purposes...
Page 201 Automatically Video Recoding on Press recording Icon Then start recording After 3 seconds, Automatically stop Recording. Video save LGE Internal Use Only - 202 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 202 (7) Camera Test Automatically call image view IF OK, press “MENU” key Play Recording video IF OK, press “MENU” key Copyright © 2010 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
Page 203 (7) Camera Test Automatically call image view Press menu key, Call video play IF OK, press “MENU” key LGE Internal Use Only - 204 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 204 11. Stand-alone Test Item Order Description (8) Loop Back Loop Back Start (Include EAR- MIC) IF OK, press “MENU” key Copyright © 2010 LG Electronics. Inc. All right reserved. - 205 - LGE Internal Use Only Only for training and service purposes...
Page 206: Exploded View & Replacement Part List
MPBG00 ADBY01 SNGF00 GMEY01 SNGF01 SUMY00 MWAC00 SAKY01 MCCE00 ADBY02 MTAD00 SACY01 Location No Part Description ABGZ01 ADBY00 Copyright © 2010 LG Electronics. Inc. All right reserved. - 207 - LGE Internal Use Only Only for training and service purposes...
Page 208: Replacement Parts
WITHOUT MWAC00 WINDOW,LCD MWAC0135701 MOLD, PMMA HI835M, , , , , COLOR WITHOUT ADBY00 DECO ASSY ADBY0019701 COLOR Copyright © 2010 LG Electronics. Inc. All right reserved. - 209 - LGE Internal Use Only Only for training and service purposes...
Page 209 MPBT0089101 COMPLEX, (empty), , , , , BLACK WITHOUT MPBZ00 MPBZ0298101 COMPLEX, (empty), , , , , COLOR LGE Internal Use Only - 210 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 210 COMPLEX, (empty), , , , , COLOR WITHOUT MGAZ00 GASKET MGAZ0099901 COMPLEX, (empty), , , , , COLOR Copyright © 2010 LG Electronics. Inc. All right reserved. - 211 - LGE Internal Use Only Only for training and service purposes...
Page 211 MBFZ0048501 PRESS, STS, 0.3, , , , COLOR ANT250 CONTACT MCIZ0001601 PRESS, BeCu, 0.1, , , , GOLD LGE Internal Use Only - 212 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 212: Main Component
18 V, ,SMD ,10pF, 1005 VA702 VARISTOR SEVY0004301 18 V, ,SMD ,10pF, 1005 VA703 VARISTOR SEVY0004301 18 V, ,SMD ,10pF, 1005 Copyright © 2010 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
Page 213 220 ohm,1005 ,DCR : 0.35 , Rated current : BD250 FILTER,BEAD,CHIP SFBH0009601 500mA,PBFREE C100 INDUCTOR,CHIP ELCH0004726 1.5 nH,J ,1005 ,R/TP , LGE Internal Use Only - 214 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 214 ECCH0009206 68 pF,25V ,J ,X7R ,TC ,0603 ,R/TP C133 CAP,CERAMIC,CHIP ECCH0009216 22 pF,25V ,J ,X7R ,TC ,0603 ,R/TP Copyright © 2010 LG Electronics. Inc. All right reserved. - 215 - LGE Internal Use Only Only for training and service purposes...
Page 215 1 nF,16V ,K ,X7R ,HD ,0603 ,R/TP , , ,[empty] ,[empty] C164 CAP,CHIP,MAKER ECZH0025920 ,[empty] ,[empty] ,[empty] ,[empty] C165 CAP,CHIP,MAKER ECZH0000813 100 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP LGE Internal Use Only - 216 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 216 330 pF,50V ,K ,X7R ,HD ,1005 ,R/TP C213 CAP,CERAMIC,CHIP ECCH0005602 2.2 uF,16V ,K ,X5R ,HD ,1608 ,R/TP C214 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP Copyright © 2010 LG Electronics. Inc. All right reserved. - 217 - LGE Internal Use Only Only for training and service purposes...
Page 217 C263 CAP,CERAMIC,CHIP ECCH0002001 ,[empty] ,[empty] ,[empty] ,[empty] ,.5 mm C264 CAP,TANTAL,CHIP ECTH0001903 22 uF,6.3V ,M ,L_ESR ,1608 ,R/TP LGE Internal Use Only - 218 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 218 ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C312 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C313 CAP,CERAMIC,CHIP ECCH0000155 10 nF,16V,K,X7R,HD,1005,R/TP C314 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP Copyright © 2010 LG Electronics. Inc. All right reserved. - 219 - LGE Internal Use Only Only for training and service purposes...
Page 219 0.1 uF,6.3V ,K ,B ,HD ,1005 ,R/TP , , ,[empty] ,[empty] C344 CAP,CERAMIC,CHIP ECCH0002001 ,[empty] ,[empty] ,[empty] ,[empty] ,.5 mm LGE Internal Use Only - 220 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 220 2.2 uF,6.3V ,M ,X5R ,TC ,1005 ,R/TP C426 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C427 CAP,CERAMIC,CHIP ECCH0000198 2.2 uF,6.3V ,M ,X5R ,TC ,1005 ,R/TP Copyright © 2010 LG Electronics. Inc. All right reserved. - 221 - LGE Internal Use Only Only for training and service purposes...
Page 221 ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C458 CAP,CERAMIC,CHIP ECCH0000198 2.2 uF,6.3V ,M ,X5R ,TC ,1005 ,R/TP LGE Internal Use Only - 222 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 222 10000000 pF,6.3V ,M ,X5R ,TC ,1608 ,R/TP , , ,[empty] C536 CAP,CERAMIC,CHIP ECCH0005604 ,[empty] ,[empty] ,[empty] ,[empty] ,[empty] ,0.8 mm Copyright © 2010 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
Page 223 ECCH0005602 2.2 uF,16V ,K ,X5R ,HD ,1608 ,R/TP C609 CAP,CHIP,MAKER ECZH0001215 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP LGE Internal Use Only - 224 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 224 ,2140 ,2110 to 2170 ,1950 ,1920 to 1980 ,2.2 ,1.8 ,2.5x2.0x0.89 ,DUAL ,SMD ,R/TP FL101 FILTER,SAW SFSY0024303 1960 MHz,1.4*1.1*0.6 ,SMD ,5pin, Unbal-Bal, 50//150 Copyright © 2010 LG Electronics. Inc. All right reserved. - 225 - LGE Internal Use Only Only for training and service purposes...
Page 225 68 nH,J ,1005 ,R/TP , L110 INDUCTOR,CHIP ELCH0001036 5.6 nH,S ,1005 ,R/TP ,PBFREE L113 INDUCTOR,CHIP ELCH0005019 68 nH,J ,1005 ,R/TP , LGE Internal Use Only - 226 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 226 10 ohm,1/16W ,J ,1005 ,R/TP R103 RES,CHIP ERHY0009543 120 ohm,1/20W(0.05W) ,J ,0603 ,R/TP R104 RES,CHIP ERHY0009311 51 ohm,1/20W(0.05W) ,F ,0603 ,R/TP Copyright © 2010 LG Electronics. Inc. All right reserved. - 227 - LGE Internal Use Only Only for training and service purposes...
Page 227 100 ohm,1/16W ,J ,1005 ,R/TP R263 RES,CHIP,MAKER ERHZ0000204 100 Kohm,1/16W ,F ,1005 ,R/TP R264 RES,CHIP,MAKER ERHZ0000437 2 Kohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only - 228 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 228 0.1 ohm,1/4W ,F ,2012 ,R/TP ,; ,0.1 ,1% ,1/4W ,2012 R408 RES,CHIP,MAKER ERHZ0003901 ,R/TP R409 RES,CHIP ERHY0000161 200K ohm,1/16W,F,1005,R/TP R410 RES,CHIP,MAKER ERHZ0000401 0 ohm,1/16W ,J ,1005 ,R/TP Copyright © 2010 LG Electronics. Inc. All right reserved. - 229 - LGE Internal Use Only Only for training and service purposes...
Page 229 4700 ohm,1/16W ,J ,1005 ,R/TP R611 RES,CHIP,MAKER ERHZ0000405 10 Kohm,1/16W ,J ,1005 ,R/TP R612 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only - 20 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 230 18 V, ,SMD ,40pF, 1005 VA252 VARISTOR SEVY0004201 14 V, ,SMD ,120pF, 1005 VA253 VARISTOR SEVY0004401 18 V, ,SMD ,40pF, 1005 Copyright © 2010 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
Page 231 CAP,TANTAL,CHIP ECTH0003701 10 uF,6.3V ,M ,L_ESR ,1608 ,R/TP C560 CAP,CERAMIC,CHIP ECCH0000122 47 pF,50V,J,NP0,TC,1005,R/TP C561 CAP,CERAMIC,CHIP ECCH0000122 47 pF,50V,J,NP0,TC,1005,R/TP LGE Internal Use Only - 22 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 232 100 ohm,1/16W ,J ,1005 ,R/TP R540 RES,CHIP,MAKER ERHZ0000445 220 Kohm,1/16W ,J ,1005 ,R/TP R603 RES,CHIP ERHY0000254 4.7K ohm,1/16W,J,1005,R/TP Copyright © 2010 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...
Page 233 18 V, ,SMD ,10pF, 1005 Main ,3.0 ,320*480 ,47.04*73.81*1.9t ,16.7M ,TFT ,TM SVLM LCD MODULE SVLM0038001 ,S6D05A0 , , LGE Internal Use Only - 24 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 234: Accessory
100-240V ,5060 Hz,5.1 V,0.7 A,CB / GOST ,AC-DC ADAPTOR,AC-DC SSAD0032202 ADAPTOR ,; ,90Vac~350Vac ,5.1Vdc ,700mA ,5060 , ,WALL 2P ,USB , Copyright © 2010 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only Only for training and service purposes...

LG GT540 Service Manual

1 Introduction

2 Performance

3 Technnical BRIEF

4 Trouble Shooting

5 Download

6 Block Diagram

7 Circuit Diagram

8 BGA Pin Map

9 PCB Layout

10 Calibration & RF Auto Test Program (Tachyon)

12 Exploded View & Replacement Part List

Quick Links

Troubleshooting

Related Manuals for LG GT540

Summary of Contents for LG GT540

Table of Contents