Page 1 Internal Use Only Service Manual LG840G Date: September, 2012 / Issue 1.0...
Page 2: Table Of Contents
4.6 Checking WiFi Block ................ 69 4.7 Checking GPS Block ................. 72 4.8 Power ON Troubleshooting ............76 LGE Internal Use Only - 2 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 3: Introduction
Therefore, note that unauthorized alternations or repair may affect the regulatory status of the system and may void any remaining warranty. LGE Internal Use Only 4/140 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 3 - Copyright ©...
Page 4 • When returning system boards or parts like EEPROM to the factory, use the protective package as described. LGE Internal Use Only 5/140 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 4 - Copyright ©...
Page 5: Abbreviations
OPLL Offset Phase Locked Loop LGE Internal Use Only 6/140 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 5 - Copyright © 2012 LG Electronics. Inc. All right reserved.
Page 6 Voltage Control Temperature Compensated Crystal Oscillator Wireless Application Protocol LGE Internal Use Only 7/140 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 6 - Copyright © 2012 LG Electronics. Inc. All right reserved.
Page 7: Performance
Output: 5.1V, 700mA Input : AC 100~240V MICRO SD CARD 15.0x11.0x1.0MM SD Card 2GBYTE TR 8P 2GB MicroSD Card LGE Internal Use Only - 7 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 8: Network
: -98dBm/-96dBm (2.439%) AM Suppression -98dBm/-96dBm (2.439%) -GSM : -31dBm - DCS : -29dBm Timing Advance ± 0.5T LGE Internal Use Only - 8 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 9 < 17.5 %, when Pout ≥ -20 dBm < -15 dB at Pout ≥ -20 dBm Peak Code Domain Error LGE Internal Use Only - 9 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 10 < -57 dBm / 100 kHz BW @ 9 kHz ≤ f < 1 GHz Spurious Emissions < -47 dBm / 1 MHz BW @ 1 GHz ≤ f ≤ 12.75 GHz LGE Internal Use Only - 10 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 11 > 33 dB @ ±5 MHz Power Ratio (ACLR) > 43 dB @ ±10 MHz Error Vector Magnitude 3GPP Not Complete LGE Internal Use Only - 11 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 12 Sub-Test : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0 (BLER or R), 16QAM Only BLER < 10% or R >= 700kbps LGE Internal Use Only - 12 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 13: Current Consumption
-103 ± 2dBm -101 ± 2dBm BAR 1 -> No service ~ No service ~ No service ~ No service LGE Internal Use Only - 13 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 14: Battery Bar
C (AT&T Heat Emission Standard, Metal Material Heat Emission below 55degrees) 2.10 Color Temperature 2.10 Color Temperature Color Temperature 6000 ~ 9000 LGE Internal Use Only - 14 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 15: Lg840G Figure
2. PERFORMANCE 2.11 LG840G Figure 2.11 LG840G Figure LGE Internal Use Only - 15 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 16: Technical Brief
RFIN_HB TX_OUT_U_HB1 B9459 W1900_RX_P Sleep CLK RX_IN_U_G_BH1P 32.768KHz W1900_RX_M RX_IN_U_G_BH1M LG840G only supports RF Band GSM850/900/1800/1900 WCDMA 850/1900 LGE Internal Use Only - 16 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 17: Wcdma Part
- Zero-IF Receiver.No IF filter needed - Direct IQ modulation transmitter gure 3.2.1 Figure 3.2.1. WCDMA RF structure LGE Internal Use Only - 17 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 18 — but only one upconverter is active at a time. 18page Figure 3.2.1.1 Figure 3.2.1.1 WCDMA Transceiver Architecture LGE Internal Use Only - 18 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 19 The three UMTS couplers (one for each band) use a daisy-chain configuration that allows them to share the single, on-chip power detector circuit. LGE Internal Use Only - 19 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 21 The digital baseband outputs are routed to QSC baseband circuits for further processing. LGE Internal Use Only - 21 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 22 MATCH MATCH VCC2 (12) CPL_OUT (8) Figure 3.2.3.1 SKY77196 Functional Block Diagram Figure 3.2.3.1 SKY77196 Functional Block Diagram LGE Internal Use Only - 22 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 23: Edge/Gprs/Gsm Rf Block
Multi slot class 12 (LG840G: Multi slot class 10) Dual Transfer Mode (DTM) class 9 (3+2=5) Zero-IF receiver - Polar modulation transmitter LGE Internal Use Only - 23 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 24 DAC output signal is routed to GSM PA module for ramping the PA up or down, or to the transmitter signal path for data transmission. 25page Figure 3.3.1.1 Figure 3.3.1.1 QSC GSM transmitter signal paths functional diagram LGE Internal Use Only - 24 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 25 GSM Rx LO G1900 G1900 Rx BPF MN = matching network Figure 3.3.2.1 QSC GSM receiver signal paths functional diagram LGE Internal Use Only - 25 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 26 The Rx LO signal is delivered to the downconverter circuits from the LO generation and distribution circuits as described in next section. LGE Internal Use Only - 26 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 27 Ultimately the loop forces the error to approach zero and the PLL is phase and frequency locked. LGE Internal Use Only - 27 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 28 Circuit TRX1 TRX2 Vdd, Vc1..Vc3 Figure 3.3.4.1 Block diagram of FEM Figure 3.3.4.1 Block diagram of FEM LGE Internal Use Only - 28 - Copyright © 2012 LG Electronics. Inc. All right reserved. 14/77 Only for training and service purposes...
Page 29: Control Flow
WCDMA PAM QSC62X0 PA Control Baseband controller Transceiver Power Control GSM/GPRS/EDGE Receiver Band Select PMIC Antenna Switch Control LGE Internal Use Only - 29 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes 15/77...
Page 30: Bb Technica Description
3.5 BB Technica Description QSC6270 has all eight major functional blocks as like Figure 3.5. Figure 3.5 QSC6270 Base band block LGE Internal Use Only - 30 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 31 * The application subsystem includes the QDSP4u8 application digital signal processor(aDSP). 32page Figure 3.5.1 Figure 3.5.1 Processors and bus architecture LGE Internal Use Only - 31 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32 To take advantage of this QSC higher performance feature, data from memories must satisfy the requirements for these burst accesses. LGE Internal Use Only - 32 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 33 MICROSD_CLK USIM_RST External MICROSD_CMD Memory USIM_CLK USIM MICROSD_DETECT (u-SD card) USIM_DATA MICROSD_DATA[0:3] Figure 3.5.2.1 The memory control blocks LGE Internal Use Only - 33 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34 GPIO 9 BL_ I2C_ SCL MLED GPIO73 BL_I2C_SDA 6LDO GPIO72 CHG PUMP LCD_BL_CTRL GPIO50 Figure 3.5.2.2 The LCD interfaces LGE Internal Use Only - 34 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 35 Sleep CLK BT_WAKES_HOST 32.768KHz GPIO_74 BT_GPIO_1 BT_RESET_N BT / WLAN BT_REG_ON GPIO_9 Main CLK 37.4MHz Figure 3.5.3 The connectivity LGE Internal Use Only - 35 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 36 UART1_CTS_N MICROSD_CLK GPIO_6 MICROSD_DATA3 GPIO_5 GPIO_4 MICROSD_DATA2 MICROSD_DATA1 GPIO_3 GPIO_2 MICROSD_DATA0 GPIO_1 MICROSD_CMD GPIO_0 MICROSD_DET_N Figure 3.5.4 GPIOs LGE Internal Use Only - 36 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 37 * Simultaneous-GPS (processes GPS using dedicated circuitry while voice and/or data signals continue to be processed separately) * 1024x searcher, direct facility termination (DFT) accelerator, off-chip RAM for measured data storage LGE Internal Use Only - 37 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 38 Clock Clock PLL1 source generators select TCXO SLEEP_CLK Clocks block Figure 3.5.6 Clock block basic architecture of QSC6270 LGE Internal Use Only - 38 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 39 QSC6270 device — greater resolution, higher capture and streaming rates, etc. 39page Figure 3.5.7.1 Figure 3.5.7.1 Camera interface connections LGE Internal Use Only - 39 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 40 LCD_EN LCD_E LCD Controller MDP_VSYNC_PRIMART (vsync_primary) Primary LCD panel QSC62x0 device Figure 3.5.7.2.1 MDP-to-LCD interface functional block diagram LGE Internal Use Only - 40 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 41 EBI2_DATA[12] INOUT_A4 INOUT_B4 EBI2_DATA[13] INOUT_A3 INOUT_B3 C613 EBI2_DATA[14] INOUT_A2 INOUT_B2 EBI2_DATA[15] INOUT_A1 INOUT_B1 Figure 3.5.7.2.2 The LCD interface LGE Internal Use Only - 41 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 42: Power Management
* Automated recovery from sudden momentary power loss (requires external32.768 kHz crystal) Figure 3.6.1 Input circuits schematic diagram LGE Internal Use Only - 42 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 43 * All regulated output voltages are programmable. * All regulators can be set to a low-power mode except the VREG_USB_3P3 and VREG_NCP circuits LGE Internal Use Only - 43 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 44 3. VREG_MSMP powers key internal circuits and should be kept on at its default voltage setting. 4. All regulators have default output voltage settings, even if they default to an off condition. 29/77 LGE Internal Use Only - 44 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 45: Trouble Shooting
FL803 U804 FL802 FL801 U801 U803 X801 U802 U201 FL103 X301 FL104 X302 FL102 FL101 U101 U102 FL105 LGE Internal Use Only - 45 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46 FL801 BT WiFi Tx SAW Filter Murata FL802 GPS SAW Filter Epcos FL803 GPS SAW Filter 1575.42MHz Epcos LGE Internal Use Only - 46 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 47: Rf Path
4. TROUBLE SHOOTING 4.2 RF Path 4.2.1 WCDMA path TX Path RX Path TX/RX Path LGE Internal Use Only - 47 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 49: Trouble Shooting Of Gsm Part (Gsm850/900/1800/1900)
1 Check XO (X302) 2. Check M/S & FEM (FL101) 3. Check Rx Part 4. Check Tx Part LGE Internal Use Only - 49 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50 Check TP1 Check U201 (X302) XO_ADC_REF XO_ADC_IN GND_XO_ADC AC13 VREF_THERM VREF_THERM_OUT HKAIN0 VBAT_TEMP 1ZCB19200AB0E X302 XTAL_19M_IN XTAL_19M_OUT 19.2MHz LGE Internal Use Only - 50 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 51 Check TP3 of SW102 with RF Cable TP2 Signal Replace SW102 same as TP3? Check TP1 Check U201 =2.6V? LGE Internal Use Only - 51 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 52 ANT_SEL0 ANT_SEL1 ANT_SEL2 GSM850/EGSM TX DCS/PCS TX WB850 WB 1900 GSM850 RX EGSM RX DCS RX PCS RX LGE Internal Use Only - 52 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 53 Check FEM & Signal exist? Soldering of TPs Rx Still has problem? GSM/DCS/PCS Rx is OK. Re-download & Calibration LGE Internal Use Only - 53 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 54 0.5p FL102 B8553 L136 2.7n C169 WCDMA_850 W850/GSM850_RX_M TP3 : GSM850 L137 C131 GND1 GND2 GND5 GND3 GND4 LGE Internal Use Only - 54 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 55 GSM850 33dBm, EGSM 32.5dBm Check U201 Pin8 Is over 0dBm? DCS/PCS 29.5dBm over? Re-download & Calibration Replace U101 LGE Internal Use Only - 55 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 57 V ramp Input Current V ramp = 0.2V, 1.6V µA Operating Case Temperature ℃ Supply Voltage, V (TP5) BATT LGE Internal Use Only - 57 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 58: Trouble Shooting Of Wcdma Part
Setup Test Equipment Cell Power = -74dBm WCDMA Rx CH : 4407 WCDMA Tx CH : 4182 Re-download & Calibration LGE Internal Use Only - 58 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 59 FL803 U804 FL802 FL801 U801 U803 X801 U802 U201 FL103 X301 FL104 X302 FL102 FL101 U101 U102 FL105 LGE Internal Use Only - 59 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 60 About -25.5dBm? Check TP2 Check FL101 About -27dBm? Check TP3 Check FL102 About -29dBm? FL105 Re-download & Calibration LGE Internal Use Only - 60 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 62 C150 L151 1.2n WCDMA_1900 W1900_RX_M 100p C155 L142 GND1 C164 8.2p GND2 GND4 L156 C165 GND3 GND6 1.2p LGE Internal Use Only - 62 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 63 Is Tx power exist? Check FL102 FL105 (>22dBm) Check TP 9 Is Tx power exist? Check FL101 (>20dBm) Re-download & Calibration LGE Internal Use Only - 63 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 65 EAN62246301 L141 L123 SKY77196 <PA_ENABLE Signal> W1900 : WCDMA_PA_ON1 W850 : WCDMA_PA_ON2 about 6dB R111 PWR_DET R113 R112 LGE Internal Use Only - 65 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 66: Checking Bluetooth Block
Is clock ok? Change the X301 32.768KHz Is clock ok? Change the X801 37.4MHz Change the Main board LGE Internal Use Only - 66 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 67 1. TP1 : VDD_3V3 2. TP2 : VREG_MSME_1.8V 3. TP3 : SLEEP_CLK 4. TP4 : BT_CLK 5. TP5 : BT_ANT_OUT LGE Internal Use Only - 67 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68 BT_I2S_DO WL_GPIO_2 EAN61970501 WL_GPIO_3 BT_PCM_CLK WL_GPIO_4 BT_PCM_IN WL_GPIO_5 BT_PCM_DOUT BT_PCM_OUT WL_GPIO_6 NC: SDIO, 1: SPI BT_PCM_SYNC BT_PCM_SYNC WL_REG_ON LGE Internal Use Only - 68 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 69: Checking Wifi Block
Replace U802 (TP1) Is clock ok? 32.768KHz Replace X301 (TP2) Check XTAL Replace X801 (TP3) Wifi will work properly LGE Internal Use Only - 69 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 71 BT_RST_N BT_WAKES_HOST BT_GPIO_2 EXT_SMPS_REQ BT_GPIO_3 EXT_PWM_REQ BT_GPIO_4 C834 BT_GPIO_5 BT_RF TX_BT BT_CLK_REQ_IN BT_CLK_REQ_POL BT_CLK_REQ_MODE BT_CLK_REQ_OUT A1: WRF_RFIN_5G, A2:WRF_RFOUT_5G LGE Internal Use Only - 71 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 72: Checking Gps Block
TP3,TP4 Change the main board Signals exist? Is clock ok? Change the X302 19.2MHz Change the Main board LGE Internal Use Only - 72 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 73 RF_IN 6.8n G1 G2 RF_OUT 100p C852 L809 C874 100p C853 6.8n EUSY0400201 FB808 1575.42 MHz GPS_LNA_EN C855 LGE Internal Use Only - 73 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 74 GPS_ADC_I RGR6240 G2 O2 100p R812 1575.42MHz GPS_ADC_Q RF_N EUSY0374001 C854 L810 RBIAS 9.1n R814 close to RGR6240 LGE Internal Use Only - 74 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 76: Power On Troubleshooting
Is clock ok? TP10 : 32.768KHz Check the TCXO & Sleep Cystal TP11 : 19M Change the main board LGE Internal Use Only - 76 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 77 4. TROUBLE SHOOTING KPDPWR_N(TP1) VREG_ VREG_ MPLL(TP7) MSME(TP4) VREG_ MSMP(TP5) VREG_ VREG_ RF1(TP3) RF2(TP6) VREG_ MSMC(TP2) VREG_ USB2P6(TP8) LGE Internal Use Only - 77 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 78 4. TROUBLE SHOOTING VREG_TCXO_2.85 (TP9) (TP10) : 32.768KHz 19M_XTAL-IN (TP11) : 19.2MHz LGE Internal Use Only - 78 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 79: Charger Troubleshooting
Is the TA voltage 5.1V? Change TA Check TP1 Is it charging properly? Change the main board [ Charger Troubleshooting Flow ] LGE Internal Use Only - 79 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 80: Usb Troubleshooting
Check the USB cable TP2 is 3.3V ? Check the USB cable Change the main board [ USB Troubleshooting Flow ] LGE Internal Use Only - 80 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 82: Usim Detect Troubleshooting
For booting up, TP2 & TP3 is run ? Change the SIM card Work well ? Change the Main board LGE Internal Use Only - 82 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 83 4. TROUBLE SHOOTING :USIM_DATA TP3: : (N.C) : GND : USIM_CLK :USIM_RESET_N : USIM_REG_3.0V Figure. USIM connector(J401) LGE Internal Use Only - 83 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 84 USIM_DATA USIM_CLK GND2 GND5 GND3 GND4 VA409 VA410 VA408 ENSY0024302 C410 C411 C412 KP09NC-6S-2_54SF Figure.4.10 USIM part schemetics LGE Internal Use Only - 84 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 85: Camera Troubleshooting
Check the CAM_MCLK(TP4) Change the Main board (24.576Mhz) Change the camera Camera is OK Change the Main board LGE Internal Use Only - 85 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 87: Main Keypad Backlight Troubleshooting
+VPWR(TP2) is Check battery above 3.2V? Change the Main board +VPWR R606 LD601 KEY_BACKLIGHT R607 LD602 R608 LD603 VA608 LGE Internal Use Only - 87 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 88: Lcd Troubleshooting
TP3 is 3.2~4.3V? Change the LCD LCD display OK? Change the FPCB LCD display OK? Change the Main PCB LGE Internal Use Only - 88 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 90: Vibrator
& TP2 is 3V? Change the FPCB Difference of Change the vibrator & is 3V? Change the Main PCB LGE Internal Use Only - 90 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 91: Receiver Path
TP1 or TP2 ? The sine wave appears at Change the FPCB TP3 or TP4 ? Change the Main board LGE Internal Use Only - 91 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 93: Headset Path
Sine wave appears at TP3, TP4? Check the Audio Sub System Sine wave appears at TP1,TP2? Change the Main board LGE Internal Use Only - 93 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 95: Speaker Phone Path
Change the Main board Sine wave appears at Check the Audio Sub System TP1,TP2? Change the Main board LGE Internal Use Only - 95 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 97: Main Microphone
Change the Main board is 1.8V? Sine wave appears at Change the Slide Ass’y TP2 or TP3? Change the Main board LGE Internal Use Only - 97 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98 39pF OBM-410L44-RC1882 C527 0.1u R515 SUMY0003816 MIC_1N VA504 VA505 R516 C533 C534 C531 C532 2.2K Close to MIC LGE Internal Use Only - 98 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 99: Headset Microphone
Change the Headset Change the User’s Headset Sine wave appears at Change the 3.5Phi_EarJack TP1? Change the MAIN board LGE Internal Use Only - 99 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 102 5. DOWNLOAD LG840G MS695 LG840G MS695 MS695 LG840G MS695 [LGFLASHv1340]LG840G_20120825_Download [LGFlashTool1.3.77.21]LGMS695_20120208_Download LGE Internal Use Only - 102 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 113 5. DOWNLOAD [LGFLASHv1340]LG840G_20120825_Download [LGFlashTool1.3.77.21]LGMS695_20120208_Download LG840G_20120825.dll LGMS695_20120208.dll LG840G_120825 LGMS695_20120208 LGE Internal Use Only - 113 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 114 5. DOWNLOAD LG840G MS695 [LGFLASHv1340]LG840G_20120825_Download [LGFlashTool1.3.77.21]LGMS695_20120208_Download LG840G MS695 LG840G MS695 LG840G 840G LG840G LG840G LGE Internal Use Only - 114 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 120: Block Diagram
Extension Memory : Micro SD MINI-ABB Battery Li-ion RT8966AGQW : 1000mAh Extension I/O : uUSB, USB2.0 Hi Speed LGE Internal Use Only - 120 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 121 NAND SDRAM_Address UART EBI2 MINI ABB RT8966 MSM_USB uUSB EBI_DATA IO x EBI2 C-MIC BATTERY LI-ION VBAT 1000mAh LGE Internal Use Only - 121 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 122 CHG PUMP VREG_MSMP_2.6V 2M FF CAM_A_2.8V VREG_MSMP BT/WiFi CAM_IO_1.8V SIDE KEY TOUCH_3.0V TOUCH CONN VREG_TCXO_2.85V GPS PAM VREG_TCXO LGE Internal Use Only - 122 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 123 TOUCH_I2C_SCL GPIO14 TOUCH CONN. TOUCH_I2C_SDA GPIO13 MINI _I2C_ SDA GPIO12 MINI ABB MINI _I2C_ SCL RT8966 GPIO11 PROXIMITY LGE Internal Use Only - 123 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 124 LCD_RESET_N GPIO 51 LCD_ID GPIO 9 BL_ I2C_ SCL MLED GPIO73 BL_I2C_SDA 6LDO GPIO72 CHG PUMP LCD_BL_CTRL GPIO50 LGE Internal Use Only - 124 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 125 2M FF Camera F_CAM_DATA[7] CAMIF_DATA[7] GPIO35 CAM_I2C_SCL GPIO40 CAM_I2C_SDA GPIO 39 CAM_RESET_N GPIO36 GPIO36 CAM_PWDN GPIO27 CAMIF_MCLK GPIO38 CAMIF_PCLK GPIO24 LGE Internal Use Only - 125 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 126 MIC1P MIC1N BT_PCM_CLK GPIO22 BT_PCM_CLK BT_PCM_DOUT GPIO21 BT / WiFi BT_PCM_DIN BT_PCM_DIN BCM4330 GPIO20 BT_PCM_DOUT BT_PCM_SYNC BT_PCM_SYNC GPIO19 LGE Internal Use Only - 126 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 127 RFIN_HB TX_OUT_U_HB1 B9459 W1900_RX_P Sleep CLK RX_IN_U_G_BH1P 32.768KHz W1900_RX_M RX_IN_U_G_BH1M LG840G only supports RF Band GSM850/900/1800/1900 WCDMA 850/1900 LGE Internal Use Only - 127 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 128 EBI2_DATA[0:15] SDRAM_DQM[0:1] QSC6270 SDRAM_DQS[0:1] ADDRESS[0:15] DATA[0:15] MICROSD_CLK USIM_RST External MICROSD_CMD Memory USIM USIM_CLK MICROSD_DETECT (u-SD card) USIM_DATA MICROSD_DATA[0:3] LGE Internal Use Only - 128 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 129 GPIO BT_GPIO_0 GPIO_75 Sleep CLK BT_WAKES_HOST 32.768KHz GPIO_74 BT_GPIO_1 BT_RESET_N BT / WLAN BT_REG_ON GPIO_9 Main CLK 37.4MHz LGE Internal Use Only - 129 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 130: Circuit Diagram
6dB 100p C155 R111 L142 GND1 C164 8.2p PWR_DET GND2 GND4 L156 C165 GND3 GND6 1.2p R113 R112 - 130 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 131 GPIO_4 MICROSD_DATA1 GPIO_3 EBI2_CS1_N NAND_CS_N MICROSD_DATA0 GPIO_2 EBI2_CS0_N MICROSD_CMD GPIO_1 MICROSD_DET_N GPIO_0 EBI2_M_CLK GND_RF_TX_PLL GND_CDC2 GND_RF_TX_DIG GND_RF_RX_OSC GND_RF_RX_PLL - 131 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 132 Tx PLL & QSC Rx PLL & QSC LDO Outputs OJ301 OJ302 OJ303 LDO Bypass VPWR Bypass SMPS Bypass - 132 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 133 FL402 UART_RXD C434 UART_TXD C437 AUD1 AUD2 EAG63231601 C430 C438 C439 USB_DN USB_DP BL_MINI_I2C_SDA VREG_MSME_1.8V BL_MINI_I2C_SCL R421 MINI_INT - 133 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 134 C528 VA504 VA505 R516 C533 C534 C531 C532 220n GP2AP002S00F C529 C530 2.2K 0.1u 4.7u Close to MIC - 134 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 135 INOUT_B4 CAM_DATA7 CAM_RESET_N 7.5p CAM_PWDN C614 C615 D606 D607 C616 7.5pF 0.1u 0.1u D604 D605 2.2u GB042-24S-H10-E3000 ENBY0034201 - 135 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 136 SPK_OUT_M SPK_OUT_P MICROSD_DATA3 MICROSD_CMD R714 MICROSD_CLK MICROSD_DATA0 D701 C702 D702 C703 MICROSD_DATA1 D703 VA712 C700 VA711 ENBY0040701 GB042-30S-H10-E3000 - 136 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 137 IO_VL2 IO_VCC2 WLAN_CMD WLAN_SDIO[2]_BCM I_OVL3 I_OVCC3 WLAN_SDIO[2] I_OVL4 I_OVCC4 WLAN_SDIO[3]_BCM WLAN_SDIO[3] C866 C867 0.1u 0.1u C864 C865 0.1u 0.1u - 137 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 138 SPK_OUT_M SC900 D901 D902 Micro-SD Socket FROM THE E0 VREG_MICROSD_3.0V CN902 MICROSD_DATA[2] MICROSD_DATA[3] MICROSD_CMD MICROSD_CLK MICROSD_DATA[0] MICROSD_DATA[1] MICROSD_DETECT - 138 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 139 7. CIRCUIT DIAGRAM VOLUME KEY FPCB VOL_UP VOL_DOWN KB1300 CN1300 KB1301 - 139 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 141: Bga Pin Map
8. BGA PIN MAP LG840G QSC6270 Pin description 8. BGA PIN MAP LG840G QSC6270 Pin description : NC point Not Used LGE Internal Use Only - 141 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 142 8. BGA PIN MAP LG840G BCM4330FKFFBG Pin description LG840G BCM4330FKFFBG Pin description Not Used LGE Internal Use Only - 142 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 143 8. BGA PIN MAP LG840G RGR6240 Pin description LG840G RGR6240 Pin description All pins used ALL Used LGE Internal Use Only - 143 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 144 LG840G H9DA2GH1GHMMMR 8. BGA PIN MAP Pin description LG840G H9DA2GH1GHMMMR Pin description Not Used LGE Internal Use Only - 144 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 145: Pcblayout
Abnormal operation during Call - No LCD off LD601,LD602,LD603: Key BackLight LED - No Key Light on LG840G_MAIN_EAX64714301_1.0_TOP - 145 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 146 - no WiFi - No GPS U802 WiFi Chipset BCM4330 - Abnormal operation - no Bluetooth / WiFi LG840G_MAIN_EAX64714301_1.0_ BOT-1 - 146 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 147 FL102, 105: - No service WCDMA TX SAW WCDMA Tx Power and - No service LG840G_MAIN_EAX64714301_1.0_ BOT-2 _TOP - 147 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 148 9. PCB LAYOUT J900 3.5Pi earjack - No earjack LG840G_F_SUB_EAX64741901_1.0_TOP _BOT - 148 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 149 - No speaker and - No motor on - Receiver sound CN902 Socket CARD - No SD memory detect LG840G_F_SUB_EAX64741901_1.0_BOT _TOP - 149 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 154: Calibration
LG840G LG-C395 GU295 10.1 Configuration of Tachyon 10.1.1 Configuration of directory LG840G/ LG840G LG840G LG840G LG840G 840G LGE Internal Use Only - 154 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes 82/77...
Page 155 ‘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 - 155 - Copyright © 2012 LG Electronics. Inc. All right reserved. 83/77 Only for training and service purposes...
Page 156: How To Use Tachyon
You will see configuration files loaded in the right window with PASS information above < Example of selection of model name> 84/77 LGE Internal Use Only - 156 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 157 2) RF Calibration 3) RF Auto test 4) After action - Phone reset - Change UE to AMSS LGE Internal Use Only - 157 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes 85/77...
Page 158: Exploded View & Replacement Part List
PCB,Sidekey EAX00 PCB,Sidekey EAX01 GMZZ01 ACQ01 MJN00 EAC00 Can Assembly,Shield ABM00 Rechargeable Battery,Lithium Ion EAC00 Cover Assembly,Battery ACQ02 - 158 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 159 Gasket,LCD MDS63942701 Gasket,LCD MDS63922601 Pad,LCD MCQ67045301 LCD Module EAJ62131301 Tape,Window Touch MJN68103601 Touch Assy,Window EBD61326101 Cling, Label MJN68154901 - 159 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 160 LCD MODULE EAJ62131301 TAPE, WINDOW MAIN MJN68103601 WINDOW MAIN EBD61326101 TAPE, PROTECTION BAR MJN68293401 Q'ty Part Name Part Number - 160 - LGE Internal Use Only Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 161: Replacementparts
MDS63922601 COMPLEX LG840G.ATRFBK ZZ:Without Color - MDS01 Gasket MDS63942701 COMPLEX LG840G.ATRFBK ZZ:Without Color - MJN01 Tape,Window MJN68103601 COMPLEX LG840G.ATRFBK ZZ:Without Color - LGE Internal Use Only - 161 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 162 PRESS SUS 0.4t LG840G.ATRFBK ZZ:Without MDQ000000 Frame MDQ63241201 Color - COMPLEX LG-LC3200 WA:White PRINTING, PPRI MLAZ00 Label MLAZ0038303 PRINTING LGE Internal Use Only - 162 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 163 MCQ67127701 COMPLEX LG840G.ATRFBK ZZ:Without Color - K,21 ABM00 ABM73916401 LG840G.ATRFBK ZZ:Without Color - Assembly,Shield MCQ000000 Damper MCQ67226301 COMPLEX LG840G.ATRFBK ZZ:Without Color - LGE Internal Use Only - 163 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 164 MPCY0005202 COMPLEX LG-TM520 ZZ:Without Color - AAD000000 Addition Assembly AAD86170201 LG840G.ATRFBK BK:Black - Cover ACQ02 ACQ86082201 LG840G.ATRFBK BK:BLACK BLACK - Assembly,Battery LGE Internal Use Only - 164 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 165 MCK004100 Cover,Battery MCK67168101 MOLD PC LG840G.ATRFBK BK:BLACK BLACK - S,56 MJN000000 Tape MJN68136101 COMPLEX LG325G.ATRFBK ZZ:Without Color - LGE Internal Use Only - 165 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 166 PRSB6.8C 4.7V 5.7 11.5V 1A 10W DFN-2 R/TP 2P D900 Diode,TVS EDTY0008606 1 PROTEK DEVICES INC. PCB Assembly EBR072500 EBR75437001 LG840G.ATRFBK 1.0 Sub Sub,Insert LGE Internal Use Only - 166 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 167 EAN62112401 MUIC, Charger IC, Current Sink 4Ch, LDO 4Ch RICHTEK TECHNOLOGY CORP. QFN R/TP 32P RICHTEK TECHNOLOGY CORP. LGE Internal Use Only - 167 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 168 55TO+85C 0603 R/TP - TDK CORPORATION C326 C327 C328 C329 C336 C340 C356 C358 C614 C615 C825 C864 C865 C866 C867 LGE Internal Use Only - 168 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 169 C703 C1005X7R1H271KT000F 270pF 10% 50V X7R - Capacitor C344 ECZH0001116 55TO+125C 1005 R/TP - TDK KOREA Ceramic,Chip COOPERATION LGE Internal Use Only - 169 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 170 ERHY0009516 - ROHM. R217 R222 R223 R502 RT9396GQW QFN,24,R/TP,4CH+2LDO,IC,Sub U601 IC,Sub PMIC EUSY0344403 PMICIC,Sub PMIC RICHTEK TECHNOLOGY CORP. LGE Internal Use Only - 170 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 171 C434 C844 PSD05-LF 5V 6 13.5V 42A 500W SOD323 R/TP 2P D402 Diode,TVS EDTY0008601 1 PROTEK DEVICES INC. LGE Internal Use Only - 171 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 172 MCR006YZPJ101 100OHM 5% 1/20W 0603 R/TP - R636 Resistor,Chip ERHY0009503 ROHM. MCR01MZP5J101 100OHM 5% 1/16W 1005 R/TP - R703 Resistor,Chip ERHY0003301 ROHM. LGE Internal Use Only - 172 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 173 F981A226MMALZT 22uF 20% 10V 11UA - Capacitor C111 EAE62748301 55TO+125C 8OHM 1.6X0.85X0.8MM NONE SMD TA,Conformal R/TP 0.9T max. NICHICON CORPORATION LGE Internal Use Only - 173 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 174 - ROHM. R712 R713 GB042-24S-H10-E3000 24P 0.40MM STRAIGHT CN602 Connector,BtoB ENBY0034201 SOCKET SMD R/TP 1M - LS Mtron Ltd. LGE Internal Use Only - 174 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 175 L137 Multilayer,Chip MURATA MANUFACTURING CO.,LTD. L163 R714 MCR01MZP5J100 10OHM 5% 1/16W 1005 R/TP - Resistor,Chip ERHZ0000402 R807 ROHM. LGE Internal Use Only - 175 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 176 GRM1555C1H7R5D 7.5pF 0.5PF 50V C0G - C617 Capacitor ECCH0010501 55TO+125C 1005 R/TP - MURATA C619 Ceramic,Chip MANUFACTURING CO.,LTD. LGE Internal Use Only - 176 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 177 PILKOR ELECTRONICS LTD. KP09NC-6S-2.54SF SIM 6P ANGLE SMD R/TP J401 Card Socket ENSY0024302 Stroke : 11.25mm HIROSE KOREA CO.,LTD LGE Internal Use Only - 177 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 178 Wound,Chip L303 FDK CORPORATION. VA703 ICVL0518100Y500FR 18V 0% 10F 1.0*0.5*0.55 Varistor SEVY0004301 VA704 NONE SMD R/TP INNOCHIPS TECHNOLOGY LGE Internal Use Only - 178 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 179 1005GC2T6N8JLF 6.8NH 5% - 250mA 0.32OHM L808 Inductor ELCH0001049 3GHZ 8 SHIELD NONE 1.0X0.5X0.5MM R/TP L809 Multilayer,Chip PILKOR ELECTRONICS LTD. LGE Internal Use Only - 179 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 180 GB042-40S-H10-E3000 40P 0.4MM STRAIGHT CN601 Connector,BtoB ENBY0036001 SOCKET SMD R/TP 1M ENGINEERING PLASTIC UL94V-0 AU OVER NI LS Mtron Ltd. LGE Internal Use Only - 180 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 181 2.5x2.0x0.94t DUAL SMD R/TP 9P EPCOS PTE LTD. RC1005J221CS 220OHM 5% 1/16W 1005 R/TP - R805 Resistor,Chip ERHY0003501 SAMSUNG ELECTRO-MECHANICS CO., LTD. LGE Internal Use Only - 181 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 182 QUALCOMM INCORPORATED. GRM1555C1H3R9C 3.9pF 0.25PF 50V NP0 - Capacitor C123 ECCH0000195 55TO+125C 1005 R/TP - MURATA Ceramic,Chip MANUFACTURING CO.,LTD. LGE Internal Use Only - 182 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 183 11. EXPLODED VIEW & REPLACEMENT PART LIST Level LocationNo. Description PartNumber Spec Remark LG HK0603 9N1J-T 9.1NH 5% - 220mA - - Inductor L811 EAP61866401 0.48OHM 3.2GHZ 5 SHIELD 0 0.6X0.3X0.3MM Multilayer,Chip R/TP TAIYO YUDEN CO.,LTD SDB310Q 340mV 30V 200mA 1A 0SEC 150mW...
Page 184 1TO10V 4x1.0t FPCB BSE CO., LTD. C2FA-H274A C2FA-H274T 2M FF, Hynix(1/5"), SVCY00 Camera Module SVCY0023801 7x7x4.1t, FPCB, 90degree LG INNOTEK CO., LTD LGE Internal Use Only - 184 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 185 CO. LTD. EAX64742001 LG840G.ATRFBK 1.1 POLYI Double EAX01 PCB,Sidekey EAX64742001 2 0.18 Sidekey YOUNG POONG ELECTRONICS CO. LTD. LGE Internal Use Only - 185 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 186: Accessory
LG 840G Full Manual STA-U34WRI STA-U34WRI,100-240V,5060 Hz,5.1 EAY060000 Adapters SSAD0031902 V,0.7 A,UL / CSA,AC-DC ADAPTOR SUNLIN ELECTRONICS CO.,LTD LGE Internal Use Only - 186 - Copyright © 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...

LG TracFone LG840G Service Manual

1 Introduction

2 Performance

3 Technical Brief

4 Trouble Shooting

5 Download

6 Block Diagram

7 Circuit Diagram

8 Bga Pin Map

9 Pcblayout

10 Calibration

11 Exploded View & Replacement Part List

Quick Links

Troubleshooting

Related Manuals for LG TracFone LG840G

Summary of Contents for LG TracFone LG840G

Table of Contents