Page 1 Internal Use Only Service Manual GW620 Date: November, 2009 / Issue 1.0...
Page 2: Table Of Contents
4.4 Checking GSM TX Module(GSM PAM + FEM) Block ..97 4.5 Checking WCDMA Block ..........100 4.6 Checking GSM Block ..........112 Copyright © 2009 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
Page 4: Introduction
F. Pictures The pictures in this manual are for illustrative purposes only; your actual hardware may look slightly different. Copyright © 2009 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
Page 5: Only For Training And Service Purposes
• When returning system boards or parts like EEPROM to the factory, use the protective package as described. LGE Internal Use Only - 6 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 6: Performance
Part Name Comment Digital Baseband MSM7200A : Qualcomm Analog Baseband PM7540 : Qualcomm RF Chip RTR6285 : Qualcomm Copyright © 2009 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 7: Hw Features
NAND Flash : 4Gbit SDRAM : 2Gbit Speech coding FR, EFR, HR,AMR Data & Fax Built in Data & Fax support LGE Internal Use Only - 8 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 8: Only For Training And Service Purposes
MPEG4, H.263, Voice Recording Speaker Phone mode Support Travel Adapter CDROM Stereo Headset Data Cable T-Flash (External Memory) Copyright © 2009 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 9: Sw Features
EMS does not support. number of items. It depends on available memory amount. SMS Over GPRS EMS Melody / Picture LGE Internal Use Only - 10 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 10: Only For Training And Service Purposes
GPRS Class 12 EDGE Class 12 Hold / Retrieve Conference Call Max. 6 DTMF Memo pad SyncML Email Copyright © 2009 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 11: Hw Spec
: -98dBm/-96dBm (2.439%) AM Suppression -98dBm/-96dBm (2.439%) GSM : -31dBm DCS : -29dBm Timing Advance ± 0.5T LGE Internal Use Only - 12 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 12: Only For Training And Service Purposes
< 17.5 %, when Pout ≥ -20 dBm Peak Code Domain Error < -15 dB at Pout -20 dBm Copyright © 2009 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
Page 13: Only For Training And Service Purposes
+1.5/4 Inner Loop Power Control -0.5/+0.5 -0.5/+0.5 -0.5/+0.5 In Uplink -0.5/-1.5 -1/-3 -1.5/-4 group(10equal command group) +8/+12 +16/+24 LGE Internal Use Only - 14 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 14: Only For Training And Service Purposes
> 33 dB @ ±5 MHz > 43 dB @ ±10 MHz Error Vector Magnitude < 17.5 %, when Pout ≥ -20 dBm Copyright © 2009 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
Page 15: Only For Training And Service Purposes
≥ -10dBm(1Mbps,2Mbps,5.5Mbps,11Mbps) @ FER ≤ 8% Rx Adjacent Channel ≥ 35dB @FER ≤ 8%, Rejection interference input signal -70dBm@fc±25MHz(11Mbps) LGE Internal Use Only - 16 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 16: Only For Training And Service Purposes
1574.42 MHz ~ 1576.42 MHz Minimum Sensitivity 1 satellite ≥-142dBm, 7 satellites ≥ -147dBm at coarse time aiding Copyright © 2009 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
Page 17: Technical Brief
3. Technical Brief 3.1 GENERAL DESCRIPTION The GW620 supports UMTS-900(Band VIII), UMTS-2100(Band I), 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.
Page 18: Only For Training And Service Purposes
3. Technical Brief GW620 A generic, high-level functional block diagram of GW620 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 Sky77521 (FEM, Front End Module,Sky77521 include FEM and GSM PAM). The UMTS receive paths each include an LNA, an RF band-pass filter, and a down converter that translate the signal directly from RF-to-baseband using radioOne ZIF techniques.
Page 19: Gsm Mode
RF filter outputs all the way into the IC pins [Figure 1-2] GSM Receiver Inputs Topologies LGE Internal Use Only - 20 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 20: Only For Training And Service Purposes
GMSK or 8-PSK processing. These filter circuits include DC offset corrections. The filter outputs are buffered and passed on to the MSM7200A IC for further processing as shown in Figure 1-3. Copyright © 2009 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only...
Page 21: Only For Training And Service Purposes
3. Technical Brief GW620 [Figure 1-3] RTR6285 RX feature LGE Internal Use Only - 22 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 22: Only For Training And Service Purposes
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. Copyright © 2009 LG Electronics. Inc. All right reserved. - 23 -...
Page 23: 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 1-5] UMTS Receiver Inputs Topologies LGE Internal Use Only - 24 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 24: Only For Training And Service Purposes
FVCO to equal FRF. The RTR6285 IC is able to support UMTS 2100/1900/1800/1700/900 and 850 mode transmitting. This design guideline shows UMTS 2100, UMTS1900 and UMTS850 applications. Copyright © 2009 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only...
Page 25: Only For Training And Service Purposes
3. Technical Brief GW620 GW620 [Figure 1.6] RTR6285 IC Functional Block Diagram LGE Internal Use Only - 26 - Copyright © 2009 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 © 2009 LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use Only...
Page 27: Off-Chip Rf Components
Wideband Code Division Multiple Access (WCDMA) applications. This small and efficient module packs full WCDMA Band I and Band VIII coverage into a single compact package. LGE Internal Use Only - 28 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 28: Only For Training And Service Purposes
3. Technical Brief GW620 [Figure 1.7] Sky77195 Functional Block Diagram. Copyright © 2009 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only Only for training and service purposes...
Page 29: Only For Training And Service Purposes
CMOS Power Amplifier Control (PAC) block. A custom silicon integrated circuit contains decoder circuitry to control the RF switch while providing a low current external control interface. LGE Internal Use Only - 30 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 30: Only For Training And Service Purposes
3. Technical Brief GW620 [Figure 1.8] Sky77521 Functional Block Diagram. Copyright © 2009 LG Electronics. Inc. All right reserved. - 31 - LGE Internal Use Only Only for training and service purposes...
Page 31: Gps Mode
GPS LNA. The impedance transformer circuit topology is shown in Figure 1-9. [Figure 1.9] GPS Input Network Topology LGE Internal Use Only - 32 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32: Gps/Wifi/Bt Off-Chip Rf Components
3.7.2 WLAN/Bluetooth (LBEH19UNBC) The GW620 device provides the highest level of integration for a mobile wireless system, with integrated IEEE802.11 b/g (MAC/baseband/radio), Bluetooth 2.1. The LBEH19UNBC that is included of BCM4325 solution is supported three kinds of functions. It is the one antenna structure which is supported of WLAN/Bluetooth in 2.4GHz band.
Page 33: Only For Training And Service Purposes
3. Technical Brief GW620 [Figure 1.10] WLAN system architecture LGE Internal Use Only - 34 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34: Only For Training And Service Purposes
GW620 <Bluetooth> The GW620 provides the Bluetooth 2.1 + EDR specification. The Bluetooth module is the optimal solution for any voice or data application that requires the Bluetooth SIG standard Host Controller Interface (HCI) using a high-speed UART and PCM. The Bluetooth solution has an integrated radio transceiver that has been optimized for 2.4GHz Bluetooth wireless systems.
Page 35: Fm Transceiver
This equipment supports the European Radio Data System (RDS) and the US Radio Broadcast Data system (RBDS) including all the symbol encoding, block synchronization, and error correction functions. [Figure3.xx.x.x] shows the FM Radio / FM Transmitter system architecture in the GW620. [Figure3.xx.x.x]...
Page 36: Only For Training And Service Purposes
General purpose output-interrupt request. GPO1 General purpose output. 12, GND PAD Ground. Connect to ground plane on PCB. Copyright © 2009 LG Electronics. Inc. All right reserved. - 37 - LGE Internal Use Only Only for training and service purposes...
Page 37: Digital Baseband(Dbb/Msm7200A)Q
- Dual Memory Buses(EBI1-SDRAM & EBI2-NAND Flash) - External Memory Interface (Micro SD) Data Communication - Bluetooth - Slave USB LGE Internal Use Only - 38 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 38: Hardware Architecture
USB H/S PON_RESET_N JTAG_PSHOLD USBH REMOTE_PWR_ON nJTAG_RESOUT JTAG CONN. UART3 Array TP Array TP JTAG(TCK,TDI,TDO…) Figure. Simplified Block Diagram Copyright © 2009 LG Electronics. Inc. All right reserved. - 39 - LGE Internal Use Only Only for training and service purposes...
Page 39: Only For Training And Service Purposes
TCXO USIM Backlight USIM Backlight AAT1270IFO-T1 26Mhz AAT1270IFO-T1 26Mhz TOUCH TOUCH +VPWR SO2810 SO2810 Figure. Simplified Block Diagram LGE Internal Use Only - 40 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 40: Only For Training And Service Purposes
LCD_BL_EN CHARGE CHARGE SSENSE Luminance PUMP Luminance PUMP GAIN1 Sensor VREG_5M_2.8V Sensor GAIN2 VGEG_5M_AVDD_2.8V Figure. Simplified Block Diagram Copyright © 2009 LG Electronics. Inc. All right reserved. - 41 - LGE Internal Use Only Only for training and service purposes...
Page 41: Only For Training And Service Purposes
LIN_MOTOR_EN MOTOR+ Motor Driver Motor Driver Linear Motor LIN_MOT_PWM Linear Motor MOTOR- SM100 SM100 Figure. Simplified Block Diagram LGE Internal Use Only - 42 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 42: Subsystem(Msm7200A)
The RF interface communicates with the mobile station’s external RF and analog baseband circuits. Signals to these circuits control signal gain in the Rx and Tx signal path and maintain The system’s frequency reference. Copyright © 2009 LG Electronics. Inc. All right reserved. - 43 - LGE Internal Use Only...
Page 43: Only For Training And Service Purposes
The MSM7200 device meets the intent of the ANSI/IEEE 1149.1A-1993 feature list. The JTAG interface can be used to test digital interconnects between devices within the mobile station during manufacture. LGE Internal Use Only - 44 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 44: Only For Training And Service Purposes
The MSM7200A device integrates a universal serial bus (USB) controller that supports both unidirectional and bidirectional transceiver interfaces. The USB controller acts as a USB peripheral communicating with the USB host. Copyright © 2009 LG Electronics. Inc. All right reserved. - 45 - LGE Internal Use Only...
Page 45: 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 - 46 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46: Only For Training And Service Purposes
3. Technical Brief GW620 power block diagram Copyright © 2009 LG Electronics. Inc. All right reserved. - 47 - LGE Internal Use Only Only for training and service purposes...
Page 47: Only For Training And Service Purposes
3. Technical Brief Figure. PM7540 Functional Block Diagram LGE Internal Use Only - 48 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 48: Only For Training And Service Purposes
So it is necessary external charging path TR. This is NUS5530. This part also include battery side power path. NUS5530 Copyright © 2009 LG Electronics. Inc. All right reserved. - 49 - LGE Internal Use Only Only for training and service purposes...
Page 49: Only For Training And Service Purposes
(3.2V). The charging current is set to 80mA. Parameter Unit Trickle Current PM7540 Input Power Management LGE Internal Use Only - 50 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50: Only For Training And Service Purposes
Low Battery Pop-up call) 0% ~ 3% : Level chage popup Critical Low Battery Pop-up (No call) POWER OFF Copyright © 2009 LG Electronics. Inc. All right reserved. - 51 - LGE Internal Use Only Only for training and service purposes...
Page 51: External Memory Interface
(Flash / DRAM) NAND 1.8V H8BCS0UN0MCR- Hynix 45ns / 333MHz 1.8V SDRAM Table#1. External memory interface for GW620 LGE Internal Use Only - 52 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 52: H/W Sub System
: BT Wakeup Input. * BT_HOST_WAKEUP : BT Host Wakeup Output * BT_RESET_N : Low asserting reset for BT core. Copyright © 2009 LG Electronics. Inc. All right reserved. - 53 - LGE Internal Use Only Only for training and service purposes...
Page 53: Only For Training And Service Purposes
GPIO 83 BT_RESET_N +VPWR GPIO 93 REG_ON GPIO 21 VREG _MSMP _2.6V Figure. Block Diagram of BT Interface LGE Internal Use Only - 54 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 54: Only For Training And Service Purposes
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 © 2009 LG Electronics. Inc. All right reserved. - 55 - LGE Internal Use Only...
Page 55: Only For Training And Service Purposes
RX SAW DCS/PCS DAC_IREF DAC_IREF GPCS_INP FILTER FILTER PCS1900 GPCS_INN CTRL0/1 ANT_SEL0/1/2/3 /2/3 Figure. Block Diagram of RF Interface LGE Internal Use Only - 56 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 56: Only For Training And Service Purposes
_TXEN GPIO75 32.768K XTAL_OUT ANT_SEL1 MODE GPIO74 ANT_SEL2 XTAL_IN GPIO73 ANT_SEL3 GPIO72 Figure. Block Diagram of RF Interface Copyright © 2009 LG Electronics. Inc. All right reserved. - 57 - LGE Internal Use Only Only for training and service purposes...
Page 57: Only For Training And Service Purposes
32.768 GPIO68 BT_PCM_IN BT_PCM_CLK GPIO71 BT_PCM_CLK BT_WAKEUP GPIO92 BT_GPIO_0 BT_HOST_WAKEUP GPIO83 BT_GPIO_1 Figure. Block Diagram of RF Interface LGE Internal Use Only - 58 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 58: Only For Training And Service Purposes
UART signals are connected to MSM GPIO through IO connector with 115200 bps speed. GPIO_Map Name Note GPIO_86 UART3_RX Data_Rx GPIO_87 UART3_TX Data_Tx Table. UART Interface Copyright © 2009 LG Electronics. Inc. All right reserved. - 59 - LGE Internal Use Only Only for training and service purposes...
Page 59: Only For Training And Service Purposes
MAX_DP USBH_DM USBH_NEXT u-USB MAX14526 MAX_DM USBH_DP Connector. USBH_STOP USBH_DATA[0:7] Figure. USB block(MSM7200A Side & ISP1508AET, MAX14526 Side) LGE Internal Use Only - 60 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 60: Only For Training And Service Purposes
Figure. MUSIC Function KEY / Camera AF KEY VOL_SIDE_KEY KEYPAD_BUTTON KEYPAD_BUTTON KEY_ROW[0] KEY_COL[0] KEY_COL[1] SIDEKEY_4P Figure. SIDE Volume KEY Copyright © 2009 LG Electronics. Inc. All right reserved. - 61 - LGE Internal Use Only Only for training and service purposes...
Page 61: Only For Training And Service Purposes
KB49 KEY_COL[5] KB29 KB44 KB45 KB43 KB42 KB38 KEY_COL[6] KB40 KB34 KB47 KB39 KB32 Table. QTKEY key matrix LGE Internal Use Only - 62 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 62: Only For Training And Service Purposes
R149 470ohms R152 470ohms R151 470ohms R150 470ohms R148 470ohms R145 470ohms R146 470ohms 470ohms KEY_COL[7] Figure. QTKEY Copyright © 2009 LG Electronics. Inc. All right reserved. - 63 - LGE Internal Use Only Only for training and service purposes...
Page 63: Only For Training And Service Purposes
SHIFT KEY LED KEY BACKLIGHT LED Figure. Schematic of Shift key LED & Slide key LED back light circuit LGE Internal Use Only - 64 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 64: Only For Training And Service Purposes
3.14.4.1 Touch Windows Interface GW620 Touch screen is a press sensor with an attached flexible PCB. GW620 4-wire resistive touch pannel. Resistive touch screen use the voltage divider principle to generate voltage that represent X and Y coordinates. LCD connector(CN1) VREG_PROX_2.8V...
Page 65: Only For Training And Service Purposes
ATTN GPIO2 XCAP SO240001-24QFN GPIO1 GND0 GPIO0 SHLD 150p SENSE0 2.2K SENSE1 2.2K Figure. Schematic of Touch Button LGE Internal Use Only - 66 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 66: Audio And Sound
Audio Sub System MAX9877 3.5Φ Jack MSM7200A 1.8V LDO RP103K181D Figure. Block diagram of Audio & Sound path Copyright © 2009 LG Electronics. Inc. All right reserved. - 67 - LGE Internal Use Only Only for training and service purposes...
Page 67: Only For Training And Service Purposes
The DSP audio processing is configured through the QDSP5000 command types and is not directly controlled by the microprocessor. LGE Internal Use Only - 68 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68: Only For Training And Service Purposes
3. Technical Brief Figure. Detailed diagram of MSM7200A audio interface Copyright © 2009 LG Electronics. Inc. All right reserved. - 69 - LGE Internal Use Only Only for training and service purposes...
Page 69: Only For Training And Service Purposes
MAX9877. The MAX9877 is available in a thermally efficient, space-saving 20-bump WLP package. LGE Internal Use Only - 70 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 70: Only For Training And Service Purposes
3. Technical Brief Figure. Detailed diagram of MAX9877 audio interface Copyright © 2009 LG Electronics. Inc. All right reserved. - 71 - LGE Internal Use Only Only for training and service purposes...
Page 71: Only For Training And Service Purposes
1ohms FM_ANT 7620-3_5G-DB1-A C144 33pF C338 C339 C226 47pF 47pF 270n 22pF 10Kohms 3.5 pi EAR JACK CONNECTOR LGE Internal Use Only - 72 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 72: Only For Training And Service Purposes
0.018uF SPKR_N BIAS OUT- C123 C150 AUDIO_I2C_SDA 33pF 33pF AUDIO_I2C_SCL RCV_P R108 10ohms RXIN+ RCV_N RXIN- R10710ohms SUBSYSTEM_AUDIO Copyright © 2009 LG Electronics. Inc. All right reserved. - 73 - LGE Internal Use Only Only for training and service purposes...
Page 73 WLED3 MDDI_P_STB_P WLED2 WLED1 VREG_LCD_1.8V VREG_LCD_2.8V MDDI_P_STB_M GB042-50S-H10-E3000 MDDI_P_DATA_P MDDI_P_DATA_M Figure. Schematic of LCD connector (in Main PCB) LGE Internal Use Only - 74 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 74: Only For Training And Service Purposes
3. Technical Brief Table. Interface between LCD Module and MAIN Board Copyright © 2009 LG Electronics. Inc. All right reserved. - 75 - LGE Internal Use Only Only for training and service purposes...
Page 75: Proximity Sensor
PMIC(U33) MSM7200A(U302) VREG_PROX _2.8V GPIO88 : PROX_OUT GPIO89 : PROX_I2C_SDA GPIO90 : PROX_I2C_SCL Figure. Proximity Sensor Block Diagram LGE Internal Use Only - 76 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 76: Luminance Sensor
GND1 SBIAS SBIAS GAIN1 GAIN2 SSENS SSENS SGND GAIN2 GAIN1 Figure. Luminance Sensor Schematic Figure. Luminance Sensor Diagram Copyright © 2009 LG Electronics. Inc. All right reserved. - 77 - LGE Internal Use Only Only for training and service purposes...
Page 77: Motion Sensor
VREG_MSMP_2.7V VREG_MSMP_2.7V BMA150 VDDIO MOTION_I2C_SDA MOTION_INT MOTION_I2C_SCL EUSY0345201 Figure. Motion Sensor Schematic Motion Sensor Schematic Block Diagram Figure. LGE Internal Use Only - 78 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 78: Vibrators
Linear motor Linear motor motor GPIO 57 : LIN_MOTOR_EN Circuitry Circuitry Main Board LCD_FPCB Figure. Vibrator Block Diagram Copyright © 2009 LG Electronics. Inc. All right reserved. - 79 - LGE Internal Use Only Only for training and service purposes...
Page 79: Compass Sensor
GPIO 91 : COMPASS_RESET AK8973 AK8973 GPIO 2 : COMPASS_I2C_SDA GPIO 1 : COMPASS_I2C_SCL Compass Sensor Schematic Block Diagram Figure. LGE Internal Use Only - 80 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 80: Main Features
- JPEG en/decoder - Supports Bluetooth and HS-USB - Supports WLAN - Supports FM Radio - 1500 mAh (Li-Ion Polymer) Copyright © 2009 LG Electronics. Inc. All right reserved. - 81 - LGE Internal Use Only Only for training and service purposes...
Page 81: Only For Training And Service Purposes
3. Technical Brief 2. GW620 Main Component Logic WIFI/BT/FM PMIC Logic USIM Logic & Audio Main board, BOTTOM LGE Internal Use Only - 82 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 82: Only For Training And Service Purposes
3. Technical Brief 3. GW620 Main Component Camera Vibrator Flash Main board, BOTTOM Copyright © 2009 LG Electronics. Inc. All right reserved. - 83 - LGE Internal Use Only Only for training and service purposes...
Page 83: Only For Training And Service Purposes
3. Technical Brief 4. GW620 Main Component Volume key Logic Music key Camera key Main board, Top LGE Internal Use Only - 84 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 84: Only For Training And Service Purposes
GSM RX Dual SAW Filter WCDMA (I) RX SAW Filter FL20 GSM RX Dual SAW Filter RF Antenna connector Copyright © 2009 LG Electronics. Inc. All right reserved. - 85 - LGE Internal Use Only Only for training and service purposes...
Page 85: Only For Training And Service Purposes
Camera filter Over voltage protection IC Camera filter MUIC for 5 pin Micro USB CN18 Micro USB 5Pin Con. LGE Internal Use Only - 86 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 86: Only For Training And Service Purposes
Fuel gauge IC WIFI & BT module MIC1 Microphone TCXO 26MHz FL12 GPS SAW filter LDO for TCXO Copyright © 2009 LG Electronics. Inc. All right reserved. - 87 - LGE Internal Use Only Only for training and service purposes...
Page 87: Only For Training And Service Purposes
Motion sensor Sleep Crystal Linear Motor Driver Hall IC LCD VSYNC level shifter Compass sensor QTKEY corder Audio Subsystem LGE Internal Use Only - 88 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 88: Trouble Shooting
4. TROUBLE SHOOTING 4. TROUBLE SHOOTING 4.1 RF Component FL20 FL9 Copyright © 2009 LG Electronics. Inc. All right reserved. - 89 - LGE Internal Use Only Only for training and service purposes...
Page 89: Only For Training And Service Purposes
WCDMA (I) TX SAW Filter GPS LNA WCDMA (VIII) TX SAW Filter FL12 GPS SAW Filter WCDMA (I) Duplexer RF Antenna Connector LGE Internal Use Only - 90 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 90: 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 Copyright © 2009 LG Electronics. Inc. All right reserved. - 91 - LGE Internal Use Only Only for training and service purposes...
Page 91: Only For Training And Service Purposes
WCDMA BAND I and VIII RX Signal PATH D1. WCDMA 2100 RX PATH E1. WCDMA 900 RX PATH F1. COMMON TX/RX PATH LGE Internal Use Only - 92 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 92: Only For Training And Service Purposes
WCDMA I,II and VIII Band TX Signal PATH D2. WCDMA 2100 TX PATH E2. WCDMA 900 TX PATH F1. COMMON TX/RX PATH Copyright © 2009 LG Electronics. Inc. All right reserved. - 93 - LGE Internal Use Only Only for training and service purposes...
Page 93: Only For Training And Service Purposes
4. TROUBLE SHOOTING GPS Signal PATH F. GPS Rx PATH LGE Internal Use Only - 94 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 94: Checking Tcxo Block
TCXO_PM_19.2MHz 0.1UF TC7SH04FS C323 0.001uF TCXO_RTR_19.2MHZ C243 100pF USBH_REF_CLK 33ohms C244 100pF Schematic of the Crystal Part (19.2MHz) Copyright © 2009 LG Electronics. Inc. All right reserved. - 95 - LGE Internal Use Only Only for training and service purposes...
Page 95: Only For Training And Service Purposes
2.4V ≥ Voltage ≥ 0.4V Check MSM6280 Check TP3 Check soldering and 19.2 MHz Signal components TCXO is OK LGE Internal Use Only - 96 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 96: Checking Gsm Tx Module(Gsm Pam + Fem) Block
4. TROUBLE SHOOTING 4.4 Checking GSM TX Module(GSM PAM + FEM) Block ANT_SEL1 VBATT ANT_SEL0 ANT_SEL2 ANT_SEL3 Copyright © 2009 LG Electronics. Inc. All right reserved. - 97 - LGE Internal Use Only Only for training and service purposes...
Page 97: Only For Training And Service Purposes
2.2K GND12 VAPC GND13 VBATT C326 VBATT C278 C335 (1608) 10uF 47pF Schematic of the Antenna Switch Block LGE Internal Use Only - 98 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98: Only For Training And Service Purposes
1 .2 V < Voltage < 3 V Check TP 1 VBATT Check the Logic In each mode Copyright © 2009 LG Electronics. Inc. All right reserved. - 99 - LGE Internal Use Only Only for training and service purposes...
Page 99: Checking Wcdma Block
4. TROUBLE SHOOTING 4.5 Checking WCDMA Block LGE Internal Use Only - 100 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 100: Only For Training And Service Purposes
CMOS Power Amplifier Control (PAC) block. A custom silicon integrated circuit contains decoder circuitry to control the RF switch while providing a low current external control interface. Copyright © 2009 LG Electronics. Inc. All right reserved. - 101 - LGE Internal Use Only...
Page 101: Only For Training And Service Purposes
WCDMA_1900_TX_OUT C129 GND2 VMODE_1 GND1 VMODE_0 WCDMA_PA_R0 C254 GND1 GND6 W_1900_PA_ON C253 GND2 GND5 GND3 GND4 C232 C233 LGE Internal Use Only - 102 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 102: Only For Training And Service Purposes
RTR6285 Maximum output Power = 7 dBm RTR6285 minimum output Power = -80 dBm PAM(SKY77195) = Maximum input Power = 10 dBm Copyright © 2009 LG Electronics. Inc. All right reserved. - 103 - LGE Internal Use Only Only for training and service purposes...
Page 103: Only For Training And Service Purposes
PAM control signal W_PA_ON (W_900_PA_ON(C174), W_2100_PA_ON(C177) and) : PAM Enable W_PA_RO: PAM Gain Control W_PA_ON must be HIGH (over 2.6V) LGE Internal Use Only - 104 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 104: Only For Training And Service Purposes
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 © 2009 LG Electronics. Inc. All right reserved. - 105 - LGE Internal Use Only...
Page 105: Only For Training And Service Purposes
C136 C156 B9640 VCC2 VCC1 RF_OUT RF_IN WCDMA_1900_TX_OUT C129 GND2 VMODE_1 GND1 VMODE_0 WCDMA_PA_R0 W_1900_PA_ON C253 C232 C233 LGE Internal Use Only - 106 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 106: Only For Training And Service Purposes
Check TP2 Check MSM7200A PA_R0 ≥ 2.6 V Check TP1 Check RTR6285 Over 10 dBm? Change the board Copyright © 2009 LG Electronics. Inc. All right reserved. - 107 - LGE Internal Use Only Only for training and service purposes...
Page 107: Only For Training And Service Purposes
4. TROUBLE SHOOTING 4.5.5. Checking RF Rx Level Bias Test Point (RF Rx Level) LGE Internal Use Only - 108 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 108: Only For Training And Service Purposes
GND4 GSM_TX GND5 GND6 GND7 100ohms 100ohms GND8 WCDMA1 GND9 WCDMA2 GND10 WCDMA3 GND11 GND12 VAPC GND13 VBATT Copyright © 2009 LG Electronics. Inc. All right reserved. - 109 - LGE Internal Use Only Only for training and service purposes...
Page 109: Only For Training And Service Purposes
DNI_CAP_0603 8.2p W2100 RX(2110 - 2170 MHz) RX_WCDMA_1900_LNA_OUT WCDMA RX 2100 LNA Circuit C135 C386 C127 RX_WCDMA_1900_BA RX_WCDMA_1900_P LGE Internal Use Only - 110 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 110: Only For Training And Service Purposes
Check Duplexer Signal exist ? Check TP4 Check RTR6285 and Signal exist ? Rx SAW filter Change the board Copyright © 2009 LG Electronics. Inc. All right reserved. - 111 - LGE Internal Use Only Only for training and service purposes...
Page 111: Checking Gsm Block
1. Check TCXO Block 2. Check ANT.SW Module 3. Check RF TRX Level 4. Re-download SW & Cal. LGE Internal Use Only - 112 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 112: Only For Training And Service Purposes
4. TROUBLE SHOOTING 2, 3 Copyright © 2009 LG Electronics. Inc. All right reserved. - 113 - LGE Internal Use Only Only for training and service purposes...
Page 113: Only For Training And Service Purposes
4.6.1. Checking TCXO Block Refer to 4.3 4.6.2. Checking FEM Block Refer to 4.4 4.6.3. Checking RF TX level LGE Internal Use Only - 114 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 114: Only For Training And Service Purposes
100ohms 100ohms GND8 WCDMA1 GND9 WCDMA2 GND10 WCDMA3 GND11 GND12 VAPC GND13 VBATT Schematic of GSM/DCS/PCS Tx Block Copyright © 2009 LG Electronics. Inc. All right reserved. - 115 - LGE Internal Use Only Only for training and service purposes...
Page 115: Only For Training And Service Purposes
If DCS/PCS(TP3) under 6 dBm ? No Problem Check soldering and Check RTR & PAD components Still exist Problem Change the board LGE Internal Use Only - 116 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 116: Only For Training And Service Purposes
4. TROUBLE SHOOTING 4.6.4 Checking RF Rx Block Copyright © 2009 LG Electronics. Inc. All right reserved. - 117 - LGE Internal Use Only Only for training and service purposes...
Page 117: Only For Training And Service Purposes
GND2 GND4 PCS(1930-1990 MHz) VBATT C273 6.8n C278 C335 (1608) RX_PCS_M 10uF 47pF Schematic of GSM/DCS/PCS Rx Block LGE Internal Use Only - 118 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 118: Only For Training And Service Purposes
4. TROUBLE SHOOTING Check FEM Block Refer 1.4 Copyright © 2009 LG Electronics. Inc. All right reserved. - 119 - LGE Internal Use Only Only for training and service purposes...
Page 119: Gps/Wifi/Bt Rf Components
RF component (GPS) Reference Description ANTENNA PAD connected to Carrier type antenna GND PAD FL12 GPS SAW FILTER GPS LNA LGE Internal Use Only - 120 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 120 RF component (WiFi / BT ) Reference Description ANT1 ANTENNA PAD connected to Carrier type antenna ANT6 GND PAD WiFi / BT module Copyright © 2009 LG Electronics. Inc. All right reserved. - 121 - LGE Internal Use Only Only for training and service purposes...
Page 121: Gps/Wifi/Bt Signal Path
4. TROUBLE SHOOTING 4.8 GPS/WIFI/BT SIGNAL PATH GPS Signal PATH (main board bottom) GPS Rx PATH LGE Internal Use Only - 122 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 122 4. TROUBLE SHOOTING WiFi / BT Signal PATH WiFi / BT Tx Rx PATH Copyright © 2009 LG Electronics. Inc. All right reserved. - 123 - LGE Internal Use Only Only for training and service purposes...
Page 123: Gps/Wifi/Bt Trouble Shooting
VREG_RF_2.7V C332 0.1u C155 5.6n R131 GPS_LNA_EN FIL_OUT GPS_IN 6.8K ALM-2412 U16 C124 C261 LNA for the GPS LGE Internal Use Only - 124 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 127 0.001uF EUSY0355701 CLK_IN TG-5010LH-87N C175 2.2u ANT1 ANT6 WLAN_BT_IN_OUT ANTENNA_PAD ANTENNA_PAD C260 C250 [Figure] Schematic of WiFi/BT module LGE Internal Use Only - 128 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 128 Power for BT/WiFi BB core and WiFi power Amp. (V Batt) VREG_MSMP_2.6V Power for BT power Amp. (2.6V) VREG_MSMP_2.6V Power for host interface (2.6V) Copyright © 2009 LG Electronics. Inc. All right reserved. - 129 - LGE Internal Use Only...
Page 129 4. TROUBLE SHOOTING Checking Flow Checking Flow Checking Flow Checking Flow Checking Flow Checking Flow LGE Internal Use Only - 130 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 130 LDO for TCXO 26MHz TCXO +VPWR VDD_TCXO RP103K281D-TR-F 26MHZ VOUT VDD_TCXO CLK_REQ C313 0.001uF EUSY0355701 CLK_IN TG-5010LH-87N C175 2.2u Copyright © 2009 LG Electronics. Inc. All right reserved. - 131 - LGE Internal Use Only Only for training and service purposes...
Page 131 6. You can select wanted test cases after getting an optimized power 7. Blue tooth On/Off - Menu Key settings Wireless controls Bluetooth Turn on/Turn off LGE Internal Use Only - 132 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 132: Power On Troubleshooting
TP7(2.85V) power up currently? Is clock ok? TP8 : 19.2M Change the Main board TP9 : 32.768Khz Redownload sw image Copyright © 2009 LG Electronics. Inc. All right reserved. - 133 - LGE Internal Use Only Only for training and service purposes...
Page 133 4. TROUBLE SHOOTING PM7540 Power sequence TP1: KPD_PWR_N(VA20) go to low LGE Internal Use Only - 134 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 134 4. TROUBLE SHOOTING VREG_MSMP_2.7V ESCY0004401 KPD_PWR_N RB521S-30 PWR_BTN VA20 RB521S-30 EVLC14S02050 Copyright © 2009 LG Electronics. Inc. All right reserved. - 135 - LGE Internal Use Only Only for training and service purposes...
Page 135 C228 AMUX_OUT AMUX_OUT 22pF 22pF KPD_PWR_N KPD_PWR_N nPON_RST PON_RESET_N PS_HOLD KDS114E C158 PS_HOLD 33pF JTAG_PS_HOLD R176 200Kohms PRSB6.8C LGE Internal Use Only - 136 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 136: Charger Troubleshooting
- Charging current path(NUS5530MIN) - Check the OVP Circuit - Battery - Check the charging current Path - Check the battery Copyright © 2009 LG Electronics. Inc. All right reserved. - 137 - LGE Internal Use Only Only for training and service purposes...
Page 137 Check PMIC(U33) SMT status by X-ray Exchange U33 or Change the Main board And Retest [ Charger Troubleshooting Flow ] LGE Internal Use Only - 138 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 139: Usb Trouble
5V? TP2(Clock) is OK? Check U5 TP3 is about Check U33 to 1.8V? Change the Main board LGE Internal Use Only - 140 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 141 VREG_MSMC1_1.2V VSW_MSMC1 VREG_MSMC1 VSNS_MSMC1_1.2V 4.7u VSW_MSMC2 VREG_MSMC2_1.2V VSNS_MSMC2_1.2V VREG_MSMC2 4.7u VREG_MSME_1.8V VSW_MSME VSNS_MSME_1.8V VREG_MSME 4.7u VREG_SMPS_2.1V VSW_PA VREG_PA LGE Internal Use Only - 142 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 142: Audio Trouble
The sine wave appear Or Change LCD_FPCB at Speaker Solder pads? Or Change SPK Module. Can you hear the tone? Copyright © 2009 LG Electronics. Inc. All right reserved. - 143 - LGE Internal Use Only Only for training and service purposes...
Page 143 SPKR_N BIAS OUT- C123 C150 AUDIO_I2C_SDA 33pF 33pF AUDIO_I2C_SCL RCV_P R108 10ohms RXIN+ RCV_N RXIN- R10710ohms LCD_FPCB SUBSYSTEM_AUDIO LGE Internal Use Only - 144 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 144 TP3, TP4 ? Can you hear the tone Check the 3.5pi Ear-jack or sound? or change SPK Module Copyright © 2009 LG Electronics. Inc. All right reserved. - 145 - LGE Internal Use Only Only for training and service purposes...
Page 145: Audio Subsystem
HS_MIC R136 1ohms EAR_SENSE R137 1ohms FM_ANT 7620-3_5G-DB1-A C144 33pF C338 C339 C226 47pF 47pF 270n 22pF 10Kohms LGE Internal Use Only - 146 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 146 The sine wave appear at Or Change LCD_FPCB pads of speaker? Can you hear the tone? Change the Speaker Module Copyright © 2009 LG Electronics. Inc. All right reserved. - 147 - LGE Internal Use Only Only for training and service purposes...
Page 147 INA1 C343 0.22uF LINE_OP C369 0.018uF LCD_FPCB MAX9877AEWP_TG45 INB2 LINE_ON INB1 C368 0.018uF BIAS RCV_P R108 10ohms RXIN LGE Internal Use Only - 148 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 148 TP2,TP3? Can you scoping some Change the Main B’d sound signal at TP4? Work well? Copyright © 2009 LG Electronics. Inc. All right reserved. - 149 - LGE Internal Use Only Only for training and service purposes...
Page 149 MIC_1P C372 C337 22uF MIC1 C139 C138 C371 C370 0.1UF 47pF 33pF 33pF 18pF 18pF C140 33pF MICROPHINE LGE Internal Use Only - 150 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 150 MIC Can you scoping some Change the Main b’d sound signal at TP2? Work well? Copyright © 2009 LG Electronics. Inc. All right reserved. - 151 - LGE Internal Use Only Only for training and service purposes...
Page 151 EAR MIC BIAS LDO EUSY0355501 VREG_MSMP_2.7V HS_MIC_BIAS_EN VOUT C360 RP103K181D-TR-F C362 C143 10uF 2.2uF 33pF HOOK_ACD HS_MIC R136 1ohms LGE Internal Use Only - 152 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 152: Camera Trouble
Check the EMI Filter (FL3,FL10) Change the camera Change the Filter (FL3,FL10) Camera is OK Change the Main board Copyright © 2009 LG Electronics. Inc. All right reserved. - 153 - LGE Internal Use Only Only for training and service purposes...
Page 153 4. TROUBLE SHOOTING (C48) (C51) (C49) CAMERA EMI/ESD Filter (FL3) (D11) (D1) CAMERA EMI FILTER (FL10) LGE Internal Use Only - 154 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 154 7.5p 7.5p GPIO10_SCLK_M DGND5 GPIO11_MOSI_M DGND6 CLKP RCLK TEST_0 CLKN 100n RCLKB SEL1 DATAP RDATA DATAN RDATAB VREG_5M_2.8V Copyright © 2009 LG Electronics. Inc. All right reserved. - 155 - LGE Internal Use Only Only for training and service purposes...
Page 155 CAM_DATA[0] FLT_CAM_DATA[0] CAM_DATA[1] FLT_CAM_DATA[1] CAM_DATA[2] FLT_CAM_DATA[2] CAM_DATA[3] FLT_CAM_DATA[3] CAM_DATA[4] FLT_CAM_DATA[4] CAM_DATA[5] FLT_CAM_DATA[5] CAM_DATA[6] FLT_CAM_DATA[6] CAM_DATA[7] FLT_CAM_DATA[7] FL10 ICVE32188E150R101FR LGE Internal Use Only - 156 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 156: Main Lcd Trouble
TP3 (D1) in LCD_FPCB LCD display OK? Change the LCD module Change the Main BD The LCD works Copyright © 2009 LG Electronics. Inc. All right reserved. - 157 - LGE Internal Use Only Only for training and service purposes...
Page 157 WLED2 WLED3 WLED4 WLED5 WLED6 WLED_PWR VSMF05LCC 2.2u 2.2u VREG_LCD_1.8V VREG_LCD_2.8V LCD_RESET_N (C10) (D1) (C2) MDDI FILTER (FL1) LGE Internal Use Only - 158 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 158: Sim Detect Troubleshooting
TP1 is 2.85V? Check J1 TP2 (Clock) is run? Change SIM card Work well? Change the Main board Copyright © 2009 LG Electronics. Inc. All right reserved. - 159 - LGE Internal Use Only Only for training and service purposes...
Page 159 GND3 GND4 SIM_IO C153 C132 C358 C359 C227 33pF ELCH0004729 33pF 0.1UF 0.1UF 22pF Figure .USIM part schematics LGE Internal Use Only - 160 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 160: Side Key Troubleshooting
TP3 (VA18) are Low? Change the Main board And Retest TP3 VA16) TP2 (VA18) TP1 (VA17) <Main Board_Top> Copyright © 2009 LG Electronics. Inc. All right reserved. - 161 - LGE Internal Use Only Only for training and service purposes...
Page 161 TP4 (VA14) is Low? Change the Main board And Retest TP3 (VA4) TP1 (VA15) TP2 (VA3) TP4 (VA14) LGE Internal Use Only - 162 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 162: Vibrators
X-ray, TP4 (U11) is high? TP5 is working? Exchange it Check SW TP2 (L18) (C14) TP1 (L42) Copyright © 2009 LG Electronics. Inc. All right reserved. - 163 - LGE Internal Use Only Only for training and service purposes...
Page 163: Proximity Sensor On/Off Trouble
Check TP1, TP2 & TP3 Change the Sensor in LCD_FPCB in the LCD_FPCB Chasnge the LCD_FPCB Work well? Change the Main Board LGE Internal Use Only - 164 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 164 4. TROUBLE SHOOTING VREG_PROX_2.8V VREG_PROX_2.8V PROX_OUT VOUT PROX_I2C_SDA LEDC PROX_I2C_SCL LEDA GP2AP002S00F Copyright © 2009 LG Electronics. Inc. All right reserved. - 165 - LGE Internal Use Only Only for training and service purposes...
Page 165: Luminance Sensor On/Off Trouble
Change the Main Board Change the Luminance sensor Check TP3 in the LCD_FPCB Work well? Change the LCD_FPCB LGE Internal Use Only - 166 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 166 SBIAS SBIAS SSENS SSENS LDO1O SGND LDO2O GAIN2 LDO3O GAIN1 LDO4O C134 CHARGE PUMP TP1 (R98) TP2 (R97) Copyright © 2009 LG Electronics. Inc. All right reserved. - 167 - LGE Internal Use Only Only for training and service purposes...
Page 167: Motion Sensor On/Off Trouble
Change the Motion sensor Check the TP1 & TP2 / TP3 output U200 Work well? Change the Main Board LGE Internal Use Only - 168 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 168 MOTION_I2C_SCL EUSY0345201 TP3 (R66) TP1 (R66) TP3 (R66) TP2 (R66) Motion Sensor TP3 (R100) TP2 (R95) TP1 (R66) Copyright © 2009 LG Electronics. Inc. All right reserved. - 169 - LGE Internal Use Only Only for training and service purposes...
Page 169: Compass Sensor On/Off Trouble
The direction is correct? Change the Compass Sensor Check the TP1 & TP2 Change the Main Board Work well? LGE Internal Use Only - 170 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 170 CAD1 AK8973B COMPASS_I2C_SDA COMPASS_I2C_SCL TP2 (R62) TP1 (R61) COMPAS SENSOR TP1 (R61) TP2 (R62) TP1 (R61) TP2 (R62) Copyright © 2009 LG Electronics. Inc. All right reserved. - 171 - LGE Internal Use Only Only for training and service purposes...
Page 196: Block Diagram
6. Block Diagram 6. Block Diagram System HW Block Diagram Copyright © 2009 LG Electronics. Inc. All right reserved. - 197 - LGE Internal Use Only Only for training and service purposes...
Page 206: Circuit Diagram
C188 C189 C186 C126 C128 0ohms 10uF 2.2uF 2.2uF 0.1UF 0.1UF 10uF 4.7uF 2.2uF 2.2uF 2.2uF 0.1UF 0.1UF Copyright © 2009 LG Electronics. Inc. All right reserved. - 207 - LGE Internal Use Only Only for training and service purposes...
Page 207 FM_ANT 7620-3_5G-DB1-A C144 33pF C338 C339 C226 47pF 47pF 270n 22pF 10Kohms CAMERA/AUDIO 3.5 pi EAR JACK CONNECTOR LGE Internal Use Only - 208 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 208 FLASH_LED_INH LIN_MOT_PWM FLASH_P PGND TYPE 100Kohms 100Kohms 100n MOTOR- C348 0.0039uF MICROSD CONNECTOR ENSY0022301 CAMERA FLASH LED DRIVER Copyright © 2009 LG Electronics. Inc. All right reserved. - 209 - LGE Internal Use Only Only for training and service purposes...
Page 209 VOLUME SIDE KEY 7.5p GPIO10_SCLK_M DGND5 GPIO11_MOSI_M DGND6 CLKP RCLK TEST_0 CLKN RCLKB SEL1 100n DATAP RDATA DATAN RDATAB VREG_5M_2.8V LGE Internal Use Only - 210 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 210 MDDI_P_STB_M GB042-50S-H10-E3000 MDDI_P_DATA_P VREG_MSMP_2.7V VREG_MSMP_2.7V MDDI_P_DATA_M BMA150 MAIN TO SLIDE FPCB(SOCKET) VDDIO MOTION_I2C_SDA MOTION_INT MOTION_I2C_SCL EUSY0345201 Motion Sensor Copyright © 2009 LG Electronics. Inc. All right reserved. - 211 - LGE Internal Use Only Only for training and service purposes...
Page 211 MSM_RTCK NLSV1T244MUTBG UART3_TX VCCB VCCA 0.1UF MSM_LCD_VSYNC_O LCD_VSYNC_O ENBY0045901 AXT614124 ARM9 & ARM11 JTAG LGE Internal Use Only LGE Internal Use Only - 212 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 212 200Kohms PRSB6.8C 2mm 2A MAX_DM MAX_DP USB_ID C225 POWER 22pF Close by uUSB CONN GU073-5P-SD-E1500 ENRY0008801 uUSB 5pin Copyright © 2009 LG Electronics. Inc. All right reserved. - 213 - LGE Internal Use Only Only for training and service purposes...
Page 213 RX_WCDMA_1900_BA RX_WCDMA_1900_P C253 GND2 GND5 GND3 GND4 C232 C233 C147 RX_WCDMA_1900_M C385 WCDMA RX 1900 BALUN Matching Network LGE Internal Use Only - 214 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 214 SHLD SSC-TWH104-HL 150p SSC-TWH104-HL TOUCH SCREEN CONNECTOR SLIDE_KPD_DRV_N SENSE0 2.2K SENSE1 EVLC5S0250 2.2K SLIDE_TOUCH_KEY SLIDE KEY BACKLIGHT LED Copyright © 2009 LG Electronics. Inc. All right reserved. - 215 - LGE Internal Use Only Only for training and service purposes...
Page 215 7. CIRCUIT DIAGRAM SUB_SIDE PCB Function KEY KEYPAD_BUTTON NEW DOUBLE SWITCH EVPAHBD6A SHUTTER SIDEKEY_5P FOCUS ESCY0006101 SIDE KEY - AF LGE Internal Use Only - 216 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 216: Side Key
7. CIRCUIT DIAGRAM SIDE KEY VOL_SIDE_KEY KEYPAD_BUTTON KEYPAD_BUTTON SIDEKEY_4P Copyright © 2009 LG Electronics. Inc. All right reserved. - 217 - LGE Internal Use Only Only for training and service purposes...
Page 224: Pcb Layout
R137 C123 C369 R108 VA34 C368 R107 R148 R150 R151 R164 R152 R149 R160 R155 R159 VA14 C193 Copyright © 2009 LG Electronics. Inc. All right reserved. - 225 - LGE Internal Use Only Only for training and service purposes...
Page 225 CN17 Battery connector & Cannot power on RX Sensitivity SW2 RF Cable connector MIC1 Microphone Cannot use MIC LGE Internal Use Only - 226 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 226 U32 High Speed USB It is only TCXO of BT / Filter use the camera transceiver WiFi Cannot use the USB Copyright © 2009 LG Electronics. Inc. All right reserved. - 227 - LGE Internal Use Only Only for training and service purposes...
Page 227 Cannot power on J1 USIM conn. Cannot use SIM U24 TCXO Buﬀer X4 Sleep crystal Cannot use sleep mode LGE Internal Use Only - 228 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 230 9. PCB LAYOUT KB1 Key Cannot use music key KB2 Key Cannot use AF/camera hot Copyright © 2009 LG Electronics. Inc. All right reserved. - 231 - LGE Internal Use Only Only for training and service purposes...
Page 232: Calibration & Rf Auto Test Program (Tachyon)
1. Configuration of Tachyon 1. Configuration of Tachyon Configuration of directory 1-1. Configuration of directory 1-1. Configuration of directory Copyright © 2009 LG Electronics. Inc. All right reserved. - 233 - LGE Internal Use Only Only for training and service purposes...
Page 233 It consists of default values. ‘MODEL NAME’_NV.INI It is written when ‘cal&auto’ is begun. ‘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...
Page 234 Click the icon, in tool bar. Then, you can see the below screen Then, you can see the below screen Copyright © 2009 LG Electronics. Inc. All right reserved. - 235 - LGE Internal Use Only Only for training and service purposes...
Page 235 Select the buyer (must be double clicked) Then, you can see “PASS” in Config File Check. e. Click select button LGE Internal Use Only - 236 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 236 - Test command send. 2) Calibration 3) Auto test 4) After action - Phone reset - Change UE to AMSS Copyright © 2009 LG Electronics. Inc. All right reserved. - 237 - LGE Internal Use Only Only for training and service purposes...
Page 250: Exploded View & Replacement Part List
TAPE UPPER DECO (BOTTOM) MTAA0204901 UPPER DECO (BOTTOM) MDAP0007401 TOUCH WINDOW MWAC0124801 TAPE WINDOW PROTECTION MTAB0348501 Part Name Part Number Q'ty Remark Copyright © 2009 LG Electronics. Inc. All right reserved. - 251 - LGE Internal Use Only Only for training and service purposes...
Page 251 COVER ASSY UPPER ACGS0030101 1 TOUCH WINDOW MWAC0124801 1 TAPE WINDOW PROTECTION MTAB0348501 1 Part Name Part Number Q'ty Remark LGE Internal Use Only - 252 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 252: Replacement Parts
MDAD0049201 PRESS, STS, 0.6, , , , BLUE MGAZ00 GASKET MGAZ0081001 COMPLEX, (empty), , , , , GOLD Copyright © 2009 LG Electronics. Inc. All right reserved. - 253 - LGE Internal Use Only Only for training and service purposes...
Page 253 MPBZ02 MPBZ0245201 COMPLEX, (empty), , , , , BLACK MPBZ03 MPBZ0272601 COMPLEX, (empty), , , , , BLACK LGE Internal Use Only - 254 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 254 1.4 mm,1.5 mm,SWCH18A ,B ,TRI , ,; ,[empty] ,[empty] , GMEY01 SCREW MACHINE,BIND GMEY0018101 SILVER , ,SWCH ,BLACK ,[empty] ,[empty] Copyright © 2009 LG Electronics. Inc. All right reserved. - 255 - LGE Internal Use Only Only for training and service purposes...
Page 255 TAPE,CAMERA MTAK0037201 COMPLEX, (empty), , , , , SILVER WITHOUT MLAZ00 LABEL MLAZ0038301 PID Label 4 Array COLOR LGE Internal Use Only - 256 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 256: Main Component
2200 ohm,1/16W ,F ,1005 ,R/TP RES,CHIP,MAKER ERHZ0000243 2200 ohm,1/16W ,F ,1005 ,R/TP RES,CHIP,MAKER ERHZ0000201 100 ohm,1/16W ,F ,1005 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. - 257 - LGE Internal Use Only Only for training and service purposes...
Page 257 10 PIN,0.4 mm,STRAIGHT , , ,; , ,0.40MM ,STRAIGHT ENBY0045301 BOARD ,FEMALE ,SMD ,[empty] , , DIODE,LED,MODULE EDLM0009501 white ,1 LED,2.0x1.6x0.7t ,R/TP , LGE Internal Use Only - 258 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 258 ECCH0006201 4.7 uF,6.3V ,K ,X5R ,TC ,1608 ,R/TP C114 CAP,CERAMIC,CHIP ECCH0006201 4.7 uF,6.3V ,K ,X5R ,TC ,1608 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. - 259 - LGE Internal Use Only Only for training and service purposes...
Page 259 C154 CAP,CHIP,MAKER ECZH0000816 12 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP C155 INDUCTOR,CHIP ELCH0004709 3.3 nH,S ,1005 ,R/TP , LGE Internal Use Only - 260 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 260 ECCH0000198 2.2 uF,6.3V ,M ,X5R ,TC ,1005 ,R/TP C183 CAP,CERAMIC,CHIP ECCH0000198 2.2 uF,6.3V ,M ,X5R ,TC ,1005 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. - 261 - LGE Internal Use Only Only for training and service purposes...
Page 261 ECZH0001215 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP C219 CAP,CHIP,MAKER ECZH0001215 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP LGE Internal Use Only - 262 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 262 NOT ASSEMBLE Unfixed C263 INDUCTOR,CHIP ELCH0004705 8.2 nH,J ,1005 ,R/TP , C264 INDUCTOR,CHIP ELCH0004718 5.6 nH,S ,1005 ,R/TP , Copyright © 2009 LG Electronics. Inc. All right reserved. - 263 - LGE Internal Use Only Only for training and service purposes...
Page 263 ECCH0009101 0.1 uF,6.3V ,K ,X5R ,TC ,0603 ,R/TP C295 CAP,CERAMIC,CHIP ECCH0009216 22 pF,25V ,J ,X7R ,TC ,0603 ,R/TP LGE Internal Use Only - 264 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 264 ECCH0009226 39 pF,25V ,J ,X7R ,TC ,0603 ,R/TP C328 CAP,CHIP,MAKER ECZH0000813 100 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. - 265 - LGE Internal Use Only Only for training and service purposes...
Page 265 ECTH0006001 ,[empty] ,7 OHM ,[empty] ,[empty] ,[empty] ,[empty] C365 CAP,CERAMIC,CHIP ECCH0000182 0.1 uF,10V ,K ,X5R ,HD ,1005 ,R/TP LGE Internal Use Only - 266 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 266 10000000 pF,6.3V ,M ,X5R ,TC ,1608 ,R/TP , , ,[empty] CAP,CERAMIC,CHIP ECCH0005604 ,[empty] ,[empty] ,[empty] ,[empty] ,[empty] ,0.8 mm Copyright © 2009 LG Electronics. Inc. All right reserved. - 267 - LGE Internal Use Only Only for training and service purposes...
Page 267 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP CAP,CERAMIC,CHIP ECCH0000155 10 nF,16V,K,X7R,HD,1005,R/TP CAP,CERAMIC,CHIP ECCH0000155 10 nF,16V,K,X7R,HD,1005,R/TP LGE Internal Use Only - 268 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 268 DIODE,TVS EDTY0009801 SOT-963 ,5 V,25 W,R/TP , ,; , , , , , ,[empty] ,[empty] ,2P DIODE,TVS EDTY0009801 Copyright © 2009 LG Electronics. Inc. All right reserved. - 269 - LGE Internal Use Only Only for training and service purposes...
Page 269 1950 MHz,1.4*1.1*0.45 ,SMD ,1920M~1980M, IL 3.2, FILTER,SAW SFSY0035101 5pin, U-U, 50-50, WCDMA BAND I Tx ,; ,1950 ,1.4*1.1*0.45 ,SMD ,R/TP LGE Internal Use Only - 270 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 270 ,; ,; ,; ,SHIELD ,2.5X2MM ,[empty] ,R/TP ,Inductor,Wire Wound,Chip INDUCTOR,CHIP ELCH0001052 18 nH,J ,1005 ,R/TP ,PBFREE INDUCTOR,CHIP ELCH0003816 3.6 nH,S ,1005 ,R/TP , Copyright © 2009 LG Electronics. Inc. All right reserved. - 271 - LGE Internal Use Only Only for training and service purposes...
Page 271 1 Kohm,1/16W ,J ,1005 ,R/TP R106 RES,CHIP,MAKER ERHZ0000404 1 Kohm,1/16W ,J ,1005 ,R/TP R118 RES,CHIP ERHY0000105 51 ohm,1/16W,F,1005,R/TP LGE Internal Use Only - 272 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 272 121000 ohm,1/16W ,F ,1005 ,R/TP 0.1 ohm,1/4W ,F ,2012 ,R/TP ,; ,0.1 ,1% ,1/4W ,2012 R178 RES,CHIP,MAKER ERHZ0003901 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. - 273 - LGE Internal Use Only Only for training and service purposes...
Page 273 100 ohm,1/16W ,F ,1005 ,R/TP RES,CHIP,MAKER ERHZ0000201 100 ohm,1/16W ,F ,1005 ,R/TP RES,CHIP,MAKER ERHZ0000201 100 ohm,1/16W ,F ,1005 ,R/TP LGE Internal Use Only - 274 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 274 1+8. CPL integrated ,; , , , , , , , ,LGA ,R/TP , GPS LNA Module integrated Filter, 3.3x2.1x1.1 ,; ,RF MODULE,ETC SMZY0021701 Module Copyright © 2009 LG Electronics. Inc. All right reserved. - 275 - LGE Internal Use Only Only for training and service purposes...
Page 275 5.6 V, ,SMD ,100pF, 1005 VA31 VARISTOR SEVY0001001 14 V, ,SMD ,50pF, 1005 VA32 VARISTOR SEVY0001001 14 V, ,SMD ,50pF, 1005 LGE Internal Use Only - 276 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 276 3.9 nF,50V ,K ,X7R ,HD ,1005 ,R/TP , , ,[empty] ,[empty] C348 CAP,CHIP,MAKER ECZH0001120 ,[empty] ,[empty] ,[empty] ,[empty] Copyright © 2009 LG Electronics. Inc. All right reserved. - 277 - LGE Internal Use Only Only for training and service purposes...
Page 277 GREEN ,1608 ,R/TP , ,; ,[empty] ,2.85~3.25 , , , , ,[empty] DIODE,LED,CHIP EDLH0014501 ,[empty] ,2P RES,CHIP,MAKER ERHZ0000443 2200 ohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only - 278 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 278 100 ohm,1/16W ,J ,1005 ,R/TP R163 RES,CHIP ERHY0000122 5.6K ohm,1/16W,F,1005,R/TP R164 RES,CHIP,MAKER ERHZ0000414 120 Kohm,1/16W ,J ,1005 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. - 279 - LGE Internal Use Only Only for training and service purposes...
Page 279 14 V, ,SMD ,50pF, 1005 VA10 VARISTOR SEVY0001001 14 V, ,SMD ,50pF, 1005 VA11 VARISTOR SEVY0001001 14 V, ,SMD ,50pF, 1005 LGE Internal Use Only - 280 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 280 14 V, ,SMD ,50pF, 1005 SMZY00 MODULE,ETC SMZY0017801 1GB / MICROSD / MLC 1 DIE ,; ,Module Assembly Copyright © 2009 LG Electronics. Inc. All right reserved. - 281 - LGE Internal Use Only Only for training and service purposes...
Page 281: Accessory
100-240V ,5060 Hz,5.1 V,0.7 A,CE ,STA-U12ES, Europe, 대치 ADAPTOR,AC-DC SSAD0031003 Cableless ,; , ,5.1 ,0.7 , , ,WALL 2P ,USB , LGE Internal Use Only - 282 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

LG GW620 Servise Manual

1 Introduction

2 Performance

3 Technical Brief

4 Trouble Shooting

5 Download & S/W Upgrade

6 Block Diagram

7 Circuit Diagram

8 BGA Pin Map

9 Pcb Layout

10 Calibration & RF Auto Test Program (Tachyon)

11 Stand-Alone Test

12 Exploded View & Replacement Part List

Quick Links

Troubleshooting

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Summary of Contents for LG GW620