Page 1 Internal Use Only Service Manual KB770 Date: November, 2008 / Issue 1.0...
Page 2: Table Of Contents
4.5 Checking Front-End Module Block ......85 4.6 Checking WCDMA Block ..........87 4.7 Checking GSM Block ..........94 4.8 Checking Bluetooth Block ........100 Copyright © 2008 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
Page 5 • When returning system boards or parts like EEPROM to the factory, use the protective package as described. LGE Internal Use Only - 6 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 6: Performance
Yes (18 pin) Connectivity Bluetooth, USB Volume Key Push Type(+, -) External Memory Trans-Flash I/O Connect 18 Pin Copyright © 2008 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 7: Usable Environment
* In case of DCS : [A] -> 1710, [B] -> 1785 * In case of PCS : [A] -> 1850, [B] -> 1910 LGE Internal Use Only - 8 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 10 Power setting in uplink compressed ±3dB(after 14slots transmission gap) Occupied Bandwidth(OBW) 5MHz(99%) -35-15*(Δf-2.5)dBc@Δf=2.5~3.5MHz,30k -35-1*(Δf-3.5)dBc@Δf=3.5~7.5MHz,1M Spectrum emission Mask -39-10*(Δf-7.5)dBc@Δf=7.5~8.5MHz,1M -49dBc@Δf=8.5~12.5MHz,1M Copyright © 2008 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 11 C/Ia2=-44dB Rejection Wanted Signal :-98dBm Wanted Signal :-96dBm Intermodulation Rejection 1st interferer:-44dBm 1st interferer:-44dBm 2nd interferer:-45dBm 2nd interferer:-44dBm LGE Internal Use Only - 12 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 12 -46dBm/3.84MHz@20MHz UE@+20dBm output power(Class3) -57dBm@f=9KHz~1GHz, 100K BW -47dBm@f=1~12.5GHz, 1M BW Spurious Emissions -60dBm@f=1920MHz~1980MHz, 3.84M BW -60dBm@f=2110MHz~2170MHz, 3.84M BW Copyright © 2008 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
Page 13: Current Consumption
3.50 ± 0.05V Low Voltage, 3.50 ± 0.05V Warning message + Blinking [Interval: 3min(Stand by)/1min(talk)] Power off 3.25 ± 0.05V LGE Internal Use Only - 14 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 14: Sound Pressure Level
-. Acoustic (Max Vol.) MS/Headset SLR : 8 3dB MS/Headset RLR : -15 3dB / -12dB (SLR/RLR : Mid-value setting) Copyright © 2008 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
Page 15: Charging
• Charging Time : Max 3 hours (except for trickle charging time) • Full charging indication current (charging icon stop current) 80mA • Cut-off voltage : 3.2 V LGE Internal Use Only - 16 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 16: Technical Brief
3. TECHNICAL BRIEF 3. TECHNICAL BRIEF 3.1 General Description The KB770 supports UMTS-2100, GSM-900, DCS-1800, and PCS-1900 based GSM/GPRS/EDGE/UMTS. All receivers and the UMTS transmitter use the radioOne[1]Zero-IF architecture to eliminate intermediate frequencies, directly converting signals between RF and baseband. The quad-band GSM transmitters use a baseband-to-IF up-conversion followed by an offset phase-locked loop that translates the GMSK-modulated or 8-PSK-modulated signal to RF.
Page 17 3. TECHNICAL BRIEF A generic, high-level functional block diagram of KB770 is shown in Figure 3.1. One antenna collects base station forward link signals and radiates handset reverse link signals. The antenna connects with receive and transmit paths through a FEM(Front End Module) The UMTS receive paths each include an LNA, an RF band-pass filter, and a downconverter that translate the signal directly from RF-to-baseband using radioOne ZIF techniques.
Page 18: Gsm Mode
RX saw filters (EGSM-900, DCS-1800 and PCS-1900). The antenna switch module allows multiple operating bands and modes to share the same antenna. In KB770, a common antenna connects to one of six paths: 1) UMTS-2100 Rx/Tx, 2) EGSM-900 Rx, 3) EGSM-900 Tx, 4) DCS-1800 Rx, and 5) DCS-1800, PCS-1900 Tx(High Band Tx’s share the same path), 6) PCS-1900 Rx.
Page 19 DC offset corrections. The filter outputs are buffered and passed on to the MSM6280 IC for further processing. LGE Internal Use Only - 20 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 22: Umts Mode
GSM Rx to the MSM IC. The UMTS baseband outputs are turned off when the RTR6275 is downconverting GSM signals and on when the UMTS is operating. Copyright © 2008 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only...
Page 23 RF. This requires FLO to equal FRF, and the RTR6275 IC design achieves this without allowing FVCO to equal FRF. LGE Internal Use Only - 24 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 24 3. TECHNICAL BRIEF Figure 3.3.2 RTR6275 IC functional block diagram Copyright © 2008 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only Only for training and service purposes...
Page 25: Lo Generation And Distribution Circuits
GPIO[12]). These GPIOs are programmed to be ANT_SEL0, ANT_SEL1, ANT_SEL2, ANT_SEL3 respectively. Table 3.5.1 Antenna Switch Module Control logic LGE Internal Use Only - 26 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 26 Insertion loss, this component is also in the receive and transmit paths ; In the KB770 typical losses : UMTS2100_ Tx = 1.6 dB, UMTS2100_ Rx = 2.0 dB Out-of-band rejection or attenuation, the duplexer provides input selectivity for the receiver, output filtering for the transmitter, and isolation between the two.
Page 27 100p L122 AWT6279R U102 HDET R124 PA_R1 C158 100p PA_ON C159 100p Figure 3.5.3 UMTS PAM, Duplexer, Coupler LGE Internal Use Only - 28 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 28 - All regulators can be individually enabled/disabled for power savings - Low power mode available on MSMA and MSMP regulators - All regulated outputs are derived from a common bandgap reference—close tracking Copyright © 2008 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only...
Page 29 Highly integrated functionality in a small package – 84-pin BCCS with a large center slug for electrical ground, mechanical stability, and thermal relief LGE Internal Use Only - 30 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32 U101 GSM_IN R118 SKY77329 GSM_OUT TX_EN GSM_PA_EN GSM_TX GSM_PA_BAND 7.75dB R119 R120 Figure 3. 5.6 GSM PAM Schematic Copyright © 2008 LG Electronics. Inc. All right reserved. - 33 - LGE Internal Use Only Only for training and service purposes...
Page 33 -. Other frequencies of particular concern . bands known to include other wireless transmitters that may deliver significant power levels to the receiver input. Table 3.5.7 UMTS Rx SAW Filter Specification LGE Internal Use Only - 34 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34 RF module and Antenna. Figure 3.5.8 shows the bluetooth system architecture in the KB770. RB04 MSM6280 Bluetooth baseband Figure3.5.8 Bluetooth system architecture Copyright © 2008 LG Electronics. Inc. All right reserved. - 35 - LGE Internal Use Only Only for training and service purposes...
Page 35 DVB-H/T signal through LCD. The DVB-H/T signal path is in the next page. Figure 3.5.9 DVB-H/T System Block Diagram LGE Internal Use Only - 36 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 36 This block samples the differential input analog signals. The maximum sampling frequency is 30MHz and the number of bits at both outputs of the ADC is 10. Copyright © 2008 LG Electronics. Inc. All right reserved. - 37 - LGE Internal Use Only...
Page 37 3. TECHNICAL BRIEF Figure3.5.9.2 Integrated Tuner Block Diagram in DVB-H/T IC LGE Internal Use Only - 38 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 38 Monitor the Wide Band Detector in order to avoid the saturation of first amplification stage of the tuner -.Application processor Data transfer(MPE tables, sections), Monitoring and configuration Figure3.5.9.3 DIB9080H Functional Block Diagram Copyright © 2008 LG Electronics. Inc. All right reserved. - 39 - LGE Internal Use Only Only for training and service purposes...
Page 39 DATA signal ADDR[1-2 ] Address signal Ready signal Interrupt signal Table 3.5.9.4 DVB-H/T Interface Figure 3.5.9.4 DVB-H/T Interface LGE Internal Use Only - 40 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 40 Average Under 300mA DVB-T Same as Phone Deep Sleep state Average Under 400mA Table 3.5.9.6 DVB-H/T Current Consumption Copyright © 2008 LG Electronics. Inc. All right reserved. - 41 - LGE Internal Use Only Only for training and service purposes...
Page 41: Digital Baseband (Msm6280)
■ Advanced 14 x 14 mm, 0.5 mm pitch, 409-pin lead-free CSP packaging technology ■ SD/SDIO hardware support LGE Internal Use Only - 42 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 42 3. TECHNICAL BRIEF 3.6.2. Block Diagram(MSM6280) Figure 3.6.2 MSM6280 block diagram Copyright © 2008 LG Electronics. Inc. All right reserved. - 43 - LGE Internal Use Only Only for training and service purposes...
Page 43: Subsystem(Msm6280)
■ Supports STTD on both associated DPCH and HS-DSCH simultaneously. ■ Supports CLTD mode 1 on the DPCH when the HS-PDSCH is active. LGE Internal Use Only - 44 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 44 ■ PBCCH support ■ 1 phase/2 phase access procedures ■ Link adaptation and IR ■ NACC, extended UL TBF. Copyright © 2008 LG Electronics. Inc. All right reserved. - 45 - LGE Internal Use Only Only for training and service purposes...
Page 45 ■ Integrated 4-bit secure digital (SD) controller for SD and Mini SD cards ■ Parallel LCD interface ■ General-purpose I/O pins ■ External keypad interface LGE Internal Use Only - 46 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46 ■ Integrated gpsOne processing ■ Standalone gpsOne mode in which the handset acts as a GPS receiver Copyright © 2008 LG Electronics. Inc. All right reserved. - 47 - LGE Internal Use Only Only for training and service purposes...
Page 47 ■ Scalable Vector Graphics (SVG- Tiny 1.1 + SVG Tiny 1.2) ■ MLZ decoder ■ Integrated PNG/SAF A.T. Table 3.7.10 Summary of MSM6280 device feature LGE Internal Use Only - 48 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 48 The MSM6280 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. Copyright © 2008 LG Electronics. Inc. All right reserved. - 49 - LGE Internal Use Only...
Page 49 The USB controller acts as a USB peripheral communicating with the USB host. LGE Internal Use Only - 50 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50: Power Block
MSM device controls and statuses the PM6650 IC using Single Serial Bus Interface (SSBI) supplemented by an Interrupt Manager for time-critical information. Another dedicated IC Interface circuit monitors multiple trigger events and controls the power-on sequence. Copyright © 2008 LG Electronics. Inc. All right reserved. - 51 - LGE Internal Use Only...
Page 51 3. TECHNICAL BRIEF Figure 3.8.2. PM6650 Functional Block Diagram LGE Internal Use Only - 52 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 52 3.76V~3.67V 3.66V~3.50V 3.50V~3.25 4.2V~3.77V 69~45 (%) 44~20 (%) 19~0 (%) 100~70 (%) KB770 Battery Bar Display(Stand By Condition) Copyright © 2008 LG Electronics. Inc. All right reserved. - 53 - LGE Internal Use Only Only for training and service purposes...
Page 53 (3.2V). The charging current is set to 80mA. Parameter Unit Trickle Current LGE Internal Use Only - 54 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 54 • Low battery POP UP : Idle - 3.50V, Dedicated(GSM/WCDMA) – 3.50V • Low battery alarm interval : Idle - 3 min, Dedicated – 1min • Cut-off voltage : 3.25V Copyright © 2008 LG Electronics. Inc. All right reserved. - 55 - LGE Internal Use Only...
Page 55: External Memory Interface
EBI2 was targeted towards supporting slower asynchronous devices such as LCD, NAND flash, SRAM, etc. In addition, MSM6280 provide SD bus interface. KB770 supports Micro-SD using SD interface. EBI1 Features - 16 bit static and dynamic memory interface...
Page 56 MSM6280 DQM[3:0] SDCC_DATA[3:0] External Memory SDCC_CMD Micro SD card SDCC_CLK Figure 3.9 Simplified Block Diagram of Memory Interface Copyright © 2008 LG Electronics. Inc. All right reserved. - 57 - LGE Internal Use Only Only for training and service purposes...
Page 57: H/W Sub System
BT_SBST_GPIO24 BT_SBST BT_SBCK_GPIO23 BT_SBCK BT_SBDT_GPIO22 BT_SBDT BT_TX_RX_N_GPIO21 BT_TX_RX_N BT_DATA_GPIO20 BT_DATA Figure 3.10.1 Schematic of RF Interface of MSM6280 LGE Internal Use Only - 58 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 58 : GSM/DCS-PCS Band Selection of Power Amp GSM_PA_RAMP : Power Amp Gain Control of APC_IC GSM_PA_EN : Power Amp Gain Control Enable of APC_IC Copyright © 2008 LG Electronics. Inc. All right reserved. - 59 - LGE Internal Use Only Only for training and service purposes...
Page 59 UART signals are connected to MSM GPIO through IO connector with 115200 bps speed. GPIO_Map Name Note GPIO_96 UART_RXD Data_Rx GPIO_95 UART_TXD Data_Tx Table 3.10.2.2 UART Interface LGE Internal Use Only - 60 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 60 USB_SE0 USB_SE0 USB_D- USB_D_M GP1_DRV_N(MPP7) R518 C536 2.2u Figure 2.10.2.3 Schematic of USB block(MSM6280 Side & PM6650 Side) Copyright © 2008 LG Electronics. Inc. All right reserved. - 61 - LGE Internal Use Only Only for training and service purposes...
Page 61 Headset remote key detection HKADC4 PCB_Rev_ADC PCB Version Check HKADC5 VBATT_TEMP Battery Temperature Check Table 3.10.3 HKADC channel table LGE Internal Use Only - 62 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 62 Table 3.10.4 Key Matrix Mapping Table DOWN KEY_ROW(0) SW101 KEY_ROW(1) SEND KEY_ROW(2) KEY_ROW(3) KEY_COL(0) KEY_COL(1) PM_ON_SW_N Figure 3.10.4 Main Keypad Circuit Copyright © 2008 LG Electronics. Inc. All right reserved. - 63 - LGE Internal Use Only Only for training and service purposes...
Page 63 3. TECHNICAL BRIEF 3.10.5 Camera Interface KB770 Installed a 3M Pixel Camera and VGA camera. Below figure shows the camera board to board connector and camera I/F signal. VREG_CAM_2.8V VREG_CAM_IO_2.8V FB400 VREG_CAM_ACT VREG_CAM_1.8V CN400 C400 0.1u CAM_PCLK_MF CAM_RESET_NF CAM_DATA(7)F CAM_DATA(6)F...
Page 64 (30fps), vertical sync signal, horizontal sync signal, reset signal and 8bits data from camera module. The VGA camera module is controlled by I2C port from MSM6280. Table 3.10.5.2 VGA Camera Module pins description Copyright © 2008 LG Electronics. Inc. All right reserved. - 65 - LGE Internal Use Only...
Page 65 PM6650 pin23 (KPD_DRV_N). LD101 LD102 VA103 ICVN0505X150FR Figure 3.10.6 Schematic of KEY back light circuit ( KEY side ) LGE Internal Use Only - 66 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 66 - Driving Method : A-Si TFT Active Matrix -16 bit CPU interface Parallel Figure 3.10.7 LCD part Block Diagram Copyright © 2008 LG Electronics. Inc. All right reserved. - 67 - LGE Internal Use Only Only for training and service purposes...
Page 67 INOUT_A4 INOUT_B4 MM_LCD_DATA[13] INOUT_A2 INOUT_B2 MM_LCD_DATA[14] INOUT_A3 INOUT_B3 MM_LCD_DATA[15] INOUT_A4 INOUT_B4 EVRC14S03Q030100R MM_LCD_VSYNC Figure 3.10.8 LCD connector interfaces LGE Internal Use Only - 68 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68 The microphone interface consists of two differential microphone inputs, one differential auxiliary input and a two-stage audio amplifier. Figure 3.10.9.1 Audio Interface Detailed Diagram(MSM6280) Copyright © 2008 LG Electronics. Inc. All right reserved. - 69 - LGE Internal Use Only...
Page 69 C210 MSM pin W18 0.1u (CODEC VSS) SDCC_DAT1_GPIO99 SDCC_DATA(1) SDCC_DAT2_GPIO100 SDCC_DATA(2) SDCC_DAT3_GPIO101 SDCC_DATA(3) Figure 3.10.9.2 Audio part schematic(MSM6280) LGE Internal Use Only - 70 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 70 100ohm RMT_INT_USB_D+ RMT_ADC_USB_D- EAR_SENSE_N VBATT R503 PM_ON_SW_N 470K VBATT_SENSE R504 TCC_UART_TXD R505 TCC_UART_RXD Figure 3.10.9.5 Audio part schematic(MMI) Copyright © 2008 LG Electronics. Inc. All right reserved. - 71 - LGE Internal Use Only Only for training and service purposes...
Page 71 AMP_SPK- CSB_ADDR CODEC_I2C_SCL SCLK CODEC_I2C_SDA SDIN I2C I/F From MSM MODE VREG_WM_2.7V Figure 3.10.9.5 Audio part schematic(Receiver/Speaker select) LGE Internal Use Only - 72 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 72 8 ohm Speaker SPM0410LR5H-QB -42 dB microphone Ear phone HC-MYD-LG086 Stereo Ear mic set Table 3.10.9.2 Audio main component list Copyright © 2008 LG Electronics. Inc. All right reserved. - 73 - LGE Internal Use Only Only for training and service purposes...
Page 73: Main Features
- MPEG4 encoder/decoder and play/save - JPEG en/decoder - Supports Bluetooth, USB - External Memory : Micro-SD - 1000 mAh (Li-Ion) LGE Internal Use Only - 74 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 74 3. TECHNICAL BRIEF 3.11.2. KB770 Main Components <Main board, Top> <Main board, Bottom> <Sub board, Top> <Sub board, Bottom> Copyright © 2008 LG Electronics. Inc. All right reserved. - 75 - LGE Internal Use Only Only for training and service purposes...
Page 75 Reference Description U100 RTR6275 U101 GSM PAM U102 WCDMA PAM X100 TCXO U705 DVB-T tuner FL100 Antenna SW LGE Internal Use Only - 76 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 76 U601 Reference Description U200 MSM6280 U302 Memory U503 PMIC U301 Audio amp. U300 Analog switch U601 DVB-T processor Copyright © 2008 LG Electronics. Inc. All right reserved. - 77 - LGE Internal Use Only Only for training and service purposes...
Page 77 3. TECHNICAL BRIEF RF/Logic(Sub board) U101 U103 U104 Reference Description U103 Charge Pump U101 Bluetooth IC U104 Touch IC LGE Internal Use Only - 78 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 78: Trouble Shooting
EFCH2140TDE1 W2100 RX SAW filter U101 SKY77329 GSM TX Dual PAM G850/900 Dual TX SAW FL101 EFCH897MTDB1 Filter Copyright © 2008 LG Electronics. Inc. All right reserved. - 79 - LGE Internal Use Only Only for training and service purposes...
Page 79: Wcdma Rf Signal Path
Bottom Top side Bottom side (2)Rx Signal Path Bottom Bottom to TOP to TOP Bottom side Top side LGE Internal Use Only - 80 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 80: Gsm Rf Signal Path
Top side Bottom side : GSM High Band (2)Rx Signal Path Bottom to TOP Bottom side Top side Copyright © 2008 LG Electronics. Inc. All right reserved. - 81 - LGE Internal Use Only Only for training and service purposes...
Page 81: Checking Vctcxo Block
100p TCXO_PM C152 1000p RTR6275_TCXO TCXO_BT [Fig 4.4.1] Schematic of the TCXO Block [Fig 4.4.2] VCTCXO 19.2MHz Wave LGE Internal Use Only - 82 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 82 Bottom side (Sub PCB) Top side Bottom side (Sub PCB) [Fig 4.4.3] Test Point of the TCXO Block Copyright © 2008 LG Electronics. Inc. All right reserved. - 83 - LGE Internal Use Only Only for training and service purposes...
Page 83 Check C527 of PMIC (U503) Check R209 of MSM (U200) [Fig 4.4.4] Test Point of the TCXO Block LGE Internal Use Only - 84 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 84: Checking Front-End Module Block
ANT_SEL 0 ANT_SEL 1 ANT_SEL 2 ANT_SEL 3 Bottom side [Fig4.5.2] Test Point of the Front-End Module Block Copyright © 2008 LG Electronics. Inc. All right reserved. - 85 - LGE Internal Use Only Only for training and service purposes...
Page 85 4. TROUBLE SHOOTING [Fig 4.5.3] Logic Table of the FEM [Fig 4.5.4] Check Flow of the FEM LGE Internal Use Only - 86 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 86: Checking Wcdma Block
4.6 Checking WCDMA Block 4.6.1 Checking Tx level Bottom side Bottom side [Fig 4.6.1.1] Test point of the WCDMA TX Block Copyright © 2008 LG Electronics. Inc. All right reserved. - 87 - LGE Internal Use Only Only for training and service purposes...
Page 87 AWT6279R U102 HDET R124 PA_R1 C158 100p PA_ON C159 100p [Fig 4.6.1.2] Schematic of the WCDMA TX Block LGE Internal Use Only - 88 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 88 Check TP1 Check FEM FL100 Check PAM block Over 22dBm? [Fig 4.6.1.3] Check Flow of the WCDMA TX Block Copyright © 2008 LG Electronics. Inc. All right reserved. - 89 - LGE Internal Use Only Only for training and service purposes...
Page 89 Bottom side Bottom side PA_ON: W2100 Enable (check C159) [Fig 4.6.2.1] Test point of the WCDMA PAM Block LGE Internal Use Only - 90 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 90 4.6.3 Checking Rx Level Bottom side Bottom side Top side Top side [Fig 4.6.3.1] Test point of the WCDMA RX Block Copyright © 2008 LG Electronics. Inc. All right reserved. - 91 - LGE Internal Use Only Only for training and service purposes...
Page 91 VDDA12 VDDA13 RX_WCDMA_2100 WLNA_IN VDDA14 L119 VREG_RF_SMPS C131 WLNA_OUT WCDMA_MIX_IN_P [Fig 4.6.3.2] Schematic of the WCDMA RX Block LGE Internal Use Only - 92 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 92 Check the RTR6275 Check TP5 (U100) Signal exist? [Fig 4.6.3.3] Check Flow of the WCDMA RX Block Copyright © 2008 LG Electronics. Inc. All right reserved. - 93 - LGE Internal Use Only Only for training and service purposes...
Page 93: Checking Gsm Block
4.7 Checking GSM Block 4.7.1 Checking Tx level Bottom side Bottom side [Fig 4.7.1.1] Test point of the GSM TX Block LGE Internal Use Only - 94 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 94 R118 SKY77329 GSM_OUT TX_EN GSM_PA_EN GSM_TX GSM_PA_BAND 7.75dB R119 R120 [Fig 4.7.1.2] Schematic of the GSM TX Block Copyright © 2008 LG Electronics. Inc. All right reserved. - 95 - LGE Internal Use Only Only for training and service purposes...
Page 95 Check PAM Block OK? Refer to Chapter 4.7.2 G900/DCS/PCS Tx is OK. [Fig 4.7.1.3] Check Flow of the GSM TX Block LGE Internal Use Only - 96 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 96 R118 SKY77329 GSM_OUT TX_EN GSM_PA_EN GSM_TX GSM_PA_BAND 7.75dB R119 R120 [Fig 4.7.2.2] Schematic of the GSM PAM Block Copyright © 2008 LG Electronics. Inc. All right reserved. - 97 - LGE Internal Use Only Only for training and service purposes...
Page 97 18nH L112 22nH WCDMA_2100 C117 C116 100p 100p C119 0.75p [Fig 4.7.3.2] Schematic of the GSM RX Block LGE Internal Use Only - 98 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98 4. TROUBLE SHOOTING TP1,TP2,TP3 Signals exist? [Fig 4.7.3.3] Check Flow of the GSM RX Block Top side RTR6275 Tx_QP Wave Copyright © 2008 LG Electronics. Inc. All right reserved. - 99 - LGE Internal Use Only Only for training and service purposes...
Page 99: Checking Bluetooth Block
C104 1000p C108 2.2u C107 100p C109 C110 0.1uF 100p VREG_MSMP_2.8V [Fig 4.8.2] Schematic of the Bluetooth Block LGE Internal Use Only - 100 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 101 Change the U101(Sub PCB) Signals exits? Change the Main board [Fig 4.8.3] Check Flow of the Bluetooth Block LGE Internal Use Only - 102 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 102: Power On Troubleshooting
Is clock ok? C150 : 19.2M Check the TCXO X500 : 32.768KHz Change the main board Copyright © 2008 LG Electronics. Inc. All right reserved. - 103 - LGE Internal Use Only Only for training and service purposes...
Page 103 TCXO-IN VREG_MSMA : 19.2MHz (C150) X500:32.768KHz VREG_MSMP VREG_MSME VREG_MSMC PS_HOLD (D502) VREG_TCXO_2.85V [MAIN Bottom (near PM6650IC) ] (C527) LGE Internal Use Only - 104 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 104: Charger Troubleshooting
Is it charging properly After turning on U504 ? Change the main board [ Charger Troubleshooting Flow ] Copyright © 2008 LG Electronics. Inc. All right reserved. - 105 - LGE Internal Use Only Only for training and service purposes...
Page 105 SOURCE DRAIN VBATT Main 4.2~4.25V Battery ICHARGEOUT +VPWR R519 U504 [ Charging part ( MAIN Bottom ) ] LGE Internal Use Only - 106 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 106: Usb Troubleshooting
Check the USB cable Check the USB cable USB_D+ is 3.3V ? Change the main board [ USB Troubleshooting Flow ] Copyright © 2008 LG Electronics. Inc. All right reserved. - 107 - LGE Internal Use Only Only for training and service purposes...
Page 107: Usim Detect Troubleshooting
USIM_P_CLK & RST is run ? Change the SIM card Work well? Work well ? Change the Main board LGE Internal Use Only - 108 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 108 USIM_P_CLK USIM_P_DATA Figure. USIM connector(J100) R102 J100 VREG_USIM_2.85V USIM_P_RST_N USIM_P_DATA USIM_P_CLK GND2 GND1 C114 Figure. USIM part schemetics Copyright © 2008 LG Electronics. Inc. All right reserved. - 109 - LGE Internal Use Only Only for training and service purposes...
Page 109: Camera Troubleshooting
Check the CAM_MCLK Change the Main board (FL406 Pin4) Change the camera Camera is OK Change the Main board LGE Internal Use Only - 110 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 110 4. TROUBLE SHOOTING C404 FL406 C405 [ MAIN Top (near camera connector) ] C403 C402 Copyright © 2008 LG Electronics. Inc. All right reserved. - 111 - LGE Internal Use Only Only for training and service purposes...
Page 111: Keypad Backlight Troubleshooting
Change the Main board R102 & R103 is Change the KEY FPCB connected ground ? Change the Main board LGE Internal Use Only - 112 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 112 R103 LD101 LD102 R102 VA103 ICVN0505X150FR [ SUB Bottom] LED_CON Figure . Side key FPCB backlight LED part Copyright © 2008 LG Electronics. Inc. All right reserved. - 113 - LGE Internal Use Only Only for training and service purposes...
Page 113: Lcd Troubleshooting
Change the LCD module LCD display OK? Change the Main board LCD display OK? Change the LCD FPCB LGE Internal Use Only - 114 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 114: Receiver Path
Change receiver SPK_300, SPK_301 The sine wave appears at Check the analog switch R300, R301? Change the Main board Copyright © 2008 LG Electronics. Inc. All right reserved. - 115 - LGE Internal Use Only Only for training and service purposes...
Page 115 4. TROUBLE SHOOTING SPK300, SPK301 Analog Switch [ MAIN Top ] R300, R301 LGE Internal Use Only - 116 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 116: Headset Path
Can you hear the tone? Sine wave appears at Change the Headset R502, R501? Change the Main board Copyright © 2008 LG Electronics. Inc. All right reserved. - 117 - LGE Internal Use Only Only for training and service purposes...
Page 117 4. TROUBLE SHOOTING CN500 R502, R501 [ MAIN Top (near MMI connector) ] [ MAIN Bottom (near MMI connector) ] LGE Internal Use Only - 118 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 118: Speaker Phone Path
Check the Analog Switch AMP_SPK+? The sine wave appears at Change the speaker SPK300, SPK301? Change the Main board Copyright © 2008 LG Electronics. Inc. All right reserved. - 119 - LGE Internal Use Only Only for training and service purposes...
Page 119 4. TROUBLE SHOOTING SPK300, SPK301 R306, R307 [ MAIN Top ] R308 Analog Switch LGE Internal Use Only - 120 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 120: Main Microphone
Make sound to MIC Sine wave appears at Change the MIC VA607? Change the Main board Work well? Copyright © 2008 LG Electronics. Inc. All right reserved. - 121 - LGE Internal Use Only Only for training and service purposes...
Page 121 [ MAIN Top (near sidekey FPCB connector) ] CN600 +VPWR LED_CON MICBIAS MIC1P MIC1N ZD604 ZD605 ZD606 C616 C617 ESD9X5.0ST5G VA609 LGE Internal Use Only - 122 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 122: Headset Microphone
1.8V? (FB500) Change the headset or Sine wave appears at Main board and retry. D501? Change the Main board Copyright © 2008 LG Electronics. Inc. All right reserved. - 123 - LGE Internal Use Only Only for training and service purposes...
Page 123 4. TROUBLE SHOOTING FB500 D501 [ MAIN Top (near MMI connector) ] CN801 [ MAIN Bottom (near MMI connector) ] LGE Internal Use Only - 124 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 124: Vibrator
Change the PMIC/Main MOTOR_EN (R703) is board above 1.8V? Change vibrator C801 R703 [ MAIN Bottom (near Vibrator connector) ] Copyright © 2008 LG Electronics. Inc. All right reserved. - 125 - LGE Internal Use Only Only for training and service purposes...
Page 125: Checking Dvb-T/H Block
4. TROUBLE SHOOTING 4.22 Checking DVB-T/H Block( The DVB-T/H function is for KB770 ) DVB-T/H PCB Block BOTTOM DVB-T/H ANTENNA FEEDING CONTACT DVB-T/H Block TCC7920S DIB9080 LGE Internal Use Only - 126 - Copyright © 2008 LG Electronics. Inc. All right reserved.
Page 126 TCC_2.7V_EHI_LCD VREG_MSMP_2.7V L601 R630 TV_OUT 3.3uH R631 R632 C622 C623 EHI_LCD LDO & CAPS Removed 270p 270p R634 Copyright © 2008 LG Electronics. Inc. All right reserved. - 127 - LGE Internal Use Only Only for training and service purposes...
Page 127: Kb770 )
2.34V<TP2 <2.86V replace not working LDO, 1.62V<TP3 <1.98V DC-DC 0.9V<TP4 <1.1V Replace X600 12MHz? Replace X700 30MHz? Replace U705 LGE Internal Use Only - 128 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 128 R706 R707 200K 121K +1.0V_DIB_MAC DIB_PWR_EN R721 +1.0V_DIB_CORE L702 4.7uH +VPWR PGND C703 MIC23031-AYMT U702 C705 2.2u 4.7u Copyright © 2008 LG Electronics. Inc. All right reserved. - 129 - LGE Internal Use Only Only for training and service purposes...
Page 129 HOST_BUS12 DIB_DATA[7] HOST_BUS13 DIB_RDY HOST_BUS14 DIB_IRQ CRYSTAL_N R719 HPXD17 CRYSTAL_P HPXD16 HPXD15 HPXD14 X700 HPXD13 30MHz HPXD12 FA-238_30MHz LGE Internal Use Only - 130 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 130: Download & S/W Upgrade
ﬁ les to the handset. LGMDP is designed to be simple to use and easy enough for the beginner to upload executable images to the handset. LGMDP supports Windows 2000/XP where the LG (Ver 4.6 or later) USB modem driver is installed.
Page 131 PC to the handset, a progressive bar (Red box) indicating the degree of transmission of data is displayed. LGE Internal Use Only - 132 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 132 Override partition table is also also defaultly not selected and user cannot choose. 6) Clear: Clearing all directory paths of images in the dialog. 7) Start: Starting downloading the selected individual image. Copyright © 2008 LG Electronics. Inc. All right reserved. - 133 - LGE Internal Use Only...
Page 133 (The ﬁ le name shall be different from that of the ﬁ le name in the snapshot.) LGE Internal Use Only - 134 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 134 Click on the No button if this is not the setting you are downloading for. Otherwise click on the Yes button to continue downloading selected image ﬁ le with options. Copyright © 2008 LG Electronics. Inc. All right reserved. - 135 -...
Page 135 DZ image. If you want to go back to original download mode, click on the Original button. LGE Internal Use Only - 136 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 136 LGMDP installation directory. Erasing the existing directories and ﬁ les before the Mod- ule image is downloaded. Copyright © 2008 LG Electronics. Inc. All right reserved. - 137 - LGE Internal Use Only Only for training and service purposes...
Page 137 Restoring NV data which backed up in the Backing up process. User can also restore NV data using NV Default image selection. LGE Internal Use Only - 138 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 138 Erasing the existing directories and ﬁ les before downloading the selected Media image Downloading Media image in progress Copyright © 2008 LG Electronics. Inc. All right reserved. - 139 - LGE Internal Use Only Only for training and service purposes...
Page 139 5. Download & S/W upgrade Downloading Module image in progress Rebooting handset Downloading process has completed successfully LGE Internal Use Only - 140 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 140 Device Manager allows to monitor current hardware that is installed on your PC. Device Manager is designed to moni- tor USB connectivity and check where the COM has been installed . Select Device Manager from the Tools of the ﬁ le menu. Copyright © 2008 LG Electronics. Inc. All right reserved. - 141 - LGE Internal Use Only...
Page 141 The below dialog shows parameters of Select Port when phone is booted in Emergency mode. Click on the Connect button to continue. LGE Internal Use Only - 142 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 142 Start button to start downloading selected images. The selected image will be downloaded to the handset from the path directory in the PC. After downloading images successfully, it will boot to normal mode. Copyright © 2008 LG Electronics. Inc. All right reserved. - 143 - LGE Internal Use Only...
Page 143 Connect the handset and Press the Connect button in the Select Port window.(Enable state in the window indicates that the Phone has been detected and is ready to download.) LGE Internal Use Only - 144 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 144 4) Recommended that the Module and Media Image have to be downloaded at the same time. 5) Erase EFS option will erase everything (media, module, nv items, and user data) in the EFS area. Copyright © 2008 LG Electronics. Inc. All right reserved. - 145 -...
Page 145: Block Diagram
NAND 2G HDET SDRAM 1G RX_SAW Power USIM 6650 Bluetooth Multimedia Demodulator Processor T-Flash DVB-T (“3 WQVGA) Challenge LGE Internal Use Only - 146 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 149 (256MB) RAS* NAND_ALE CLK_EN NAND_READY MSM6280 DATA[7:0] DQM[3:0] TFLASH_CMD SIM_RESET TFLASH_DATA[3:0] SIM_IO TFLASH USIM TFLASH_CLK SIM_CLK TFLASH_DECT_N PMIC LGE Internal Use Only - 150 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 150 EBI2_DATA[15:0] LCD_BP_EN VGA_CAM_RESET_N VGA_CAM_PWDN TCC7920 I2C_SCL Digital Processor I2C_SDA VREG_CAM_IO_2.8V CAM_MCLK VREG_CAM_1.8V WLED_PWR CAM_PCLK Camera CAM_VSYNC CAM_HSYNC CAM_DATA[7:0] Copyright © 2008 LG Electronics. Inc. All right reserved. - 151 - LGE Internal Use Only Only for training and service purposes...
Page 151 PM6650 VBUS USB_DAT USB_SE0 USB , UART TRANSCEIVER USB_OE_N JTAG USIM UART2 TRANSCEIVER (RUIM) UART1 JTAG Interface JTAG LGE Internal Use Only - 152 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 152 VREG_MSMA (2.6V/300mA) Bluetooth MEMORY Bluetooth VREG_MSME(1.8V/500mA) 6280 VREG_TCXO TCXO VREG_SYNTH(2.6V/50mA) (2.85V/ 50mA) RTR6275 USIM VREG_RF_SMPS(2.85V/150mA) T-Flash Ch ll Copyright © 2008 LG Electronics. Inc. All right reserved. - 153 - LGE Internal Use Only Only for training and service purposes...
Page 153 +VPWR UART1 Charge Pump Charge Pump LCD_BL_CTRL JTAG CON, UART,USB USB_D+,D-,VBUS TRST_N, TCK, TMS, TDI, TDO, RTCK JTAG LGE Internal Use Only - 154 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 154 MSM6280 HPL_R HPL_RC EAR JACK EAR_SENSE_N 4 Pole(12 pin MMI) MIC2P MICBIAS MIC1P 6.15x3.16, 1.25T MIC1N -42dB +/-3dB Copyright © 2008 LG Electronics. Inc. All right reserved. - 155 - LGE Internal Use Only Only for training and service purposes...
Page 156: Circuit Diagram
PA_R1 C158 100p PA_ON C159 100p L124 L123 WCDMA_MIX_IN_M C160 EFCH2140TDE1 WLNA_OUT FL104 L125 L126 3.3nH C162 WCDMA_MIX_IN_P Copyright © 2008 LG Electronics. Inc. All right reserved. - 157 - LGE Internal Use Only Only for training and service purposes...
Page 157 A2_1 MDDIC_STBN C245 Place near 0.1u MSM pin AD26 R210 2.2K R211 2.2K VREG_CAM_IO_2.8V (Check CAM_DATA PINOUT !!!!) LGE Internal Use Only - 158 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 158 VREG_WM_2.7V AUDIO CODEC LDO +VPWR +3.0V_AUDIO Keep LDO on, always!!! U303 C329 2.2u VOUT GND1 AUDIO_LDO_EN GND2 R1114D301D-TR-F Copyright © 2008 LG Electronics. Inc. All right reserved. - 159 - LGE Internal Use Only Only for training and service purposes...
Page 159 CAM_DATA(2)F CAM_HSYNCF CAM_DATA(3)F CAM_VSYNCF U401 RT9011-MMPQW +VPWR VOUT1 VREG_LCD_2.8V CAM_DATA(4)F CAM_DATA(7)F LCD_LDO_EN VOUT2 VREG_TOUCH_2.8V TOUCH_LDO_EN CAM_DATA(5)F CAM_DATA(6)F C410 LGE Internal Use Only - 160 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 160 Power Line --> Route carefully!!!!! Draw the Artwork_line thickly !!!!! --->> USB_VBUS , FLASH_DRV_N , KPD_DRV_N , KEY_ON_SW_N , MOT_PWR- VREG_MSMC_1.25V VREG_MSME_1.8V Copyright © 2008 LG Electronics. Inc. All right reserved. - 161 - LGE Internal Use Only Only for training and service purposes...
Page 161 R631 C622 C623 EHI_LCD LDO & CAPS Removed C624 C626 270p 270p ( 300mA ) C625 R634 2.2u LGE Internal Use Only - 162 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 162 30MHz INT_SELECT1 INT_SELECT0 Host Interface Type FA-238_30MHz SRAM like SPI or SD (1 and 4 bits) I2C Control Copyright © 2008 LG Electronics. Inc. All right reserved. - 163 - LGE Internal Use Only Only for training and service purposes...
Page 163 VREG_USIM_2.85V BT_DATA TP100 C121 C118 UART_TX VREG_CAM_1.8V VREG_BT_2.85V 0.01u USIM_P_CLK USIM_P_DATA BT_CLK TP101 UART_RX USIM_P_RST_N TCXO_BT TP102 PM_ON_SW_N LGE Internal Use Only - 164 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 164 KEY_COL(0) KEY_COL(1) SPM0410LR5H-QB KEY_ROW(1) SEND KEY_ROW(2) KEY_ROW(3) KEY_COL(0) KEY_COL(1) TP101 TP102 PM_ON_SW_N KEY LED LD101 LD102 VA103 ICVN0505X150FR Copyright © 2008 LG Electronics. Inc. All right reserved. - 165 - LGE Internal Use Only Only for training and service purposes...
Page 170: Pcb Layout
PM6650 Abnormal operation Abnormal operation No power on No power on U302 Memory Abnormal operation No power on Copyright © 2008 LG Electronics. Inc. All right reserved. - 171 - LGE Internal Use Only Only for training and service purposes...
Page 171 LCD connector No Charging No LCD display No power on CN501 Battery connector No power on No charging LGE Internal Use Only - 172 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 172 USIM connector No use phone set Display “Inset SmartChip” ANT100 No use BT service Abnormal Tx,& RX power Copyright © 2008 LG Electronics. Inc. All right reserved. - 173 - LGE Internal Use Only Only for training and service purposes...
Page 173 9. PCB LAYOUT CN101 B to B connector No use BT & touch, Insert SmartChip Abnormal operation LGE Internal Use Only - 174 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 176: Calibration
Select the model name which you want in list box • Click Start button to calibrate a phone Copyright © 2008 LG Electronics. Inc. All right reserved. - 177 - LGE Internal Use Only Only for training and service purposes...
Page 177 You can run the multi mode (S/B1,S/B2 : You can use S/B1 for only one port.) • You can set the path of HOTKIMCHI program. LGE Internal Use Only - 178 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 178 On Running, Log window is created in center area. It displays logs of command, and measurements of Calibration or Autotest. • The result files are saved in the directory “~janghee\debug\Cal”, “~janghee\debug\Auto”, or “~janghee\debug\ CalAuto”. Copyright © 2008 LG Electronics. Inc. All right reserved. - 179 - LGE Internal Use Only Only for training and service purposes...
Page 180: Exploded View & Replacement Part List
11. EXPLODED VIEW & REPLACEMENT PART LIST 11.1 EXPLODED VIEW Copyright © 2008 LG Electronics. Inc. All right reserved. - 181 - LGE Internal Use Only Only for training and service purposes...
Page 182: Replacement Parts
Color ACGM00 COVER ASSY,REAR ACGM0118401 Black Without GMEY00 SCREW MACHINE,BIND GMEY0011201 1.4 mm,3 mm,MSWR3(BK) ,N ,+ ,NYLOK Color Copyright © 2008 LG Electronics. Inc. All right reserved. - 183 - LGE Internal Use Only Only for training and service purposes...
Page 183 COMPLEX, (empty), , , , , Color Without GMEY00 SCREW MACHINE,BIND GMEY0011201 1.4 mm,3 mm,MSWR3(BK) ,N ,+ ,NYLOK 34, 39 Color LGE Internal Use Only - 184 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 184 SCREW MACHINE,BIND GMEY0011201 1.4 mm,3 mm,MSWR3(BK) ,N ,+ ,NYLOK Color MLAK00 LABEL,MODEL MLAK0006301 LG (30.5x21.5 4-1R) Pearl White Copyright © 2008 LG Electronics. Inc. All right reserved. - 185 - LGE Internal Use Only Only for training and service purposes...
Page 185 POLYI ,0.3 mm,MULTI-3 ,MAIZE F-CAM ,; , , , , , , , , , SAFY00 PCB ASSY,MAIN SAFY0288201 P, 35 SAFB00 PCB ASSY,MAIN,INSERT SAFB0090201 SAFF00 PCB ASSY,MAIN,SMT SAFF0200101 LGE Internal Use Only - 186 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 186 0.75 pF,50V ,C ,NP0 ,TC ,1005 ,R/TP C162 INDUCTOR,CHIP ELCH0004709 3.3 nH,S ,1005 ,R/TP , C301 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. - 187 - LGE Internal Use Only Only for training and service purposes...
Page 187 ECZH0000830 33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP C522 CAP,CHIP,MAKER ECZH0000841 56 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP LGE Internal Use Only - 188 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 188 ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C702 CAP,CERAMIC,CHIP ECCH0007802 4.7 uF,10V ,M ,X5R ,TC ,1608 ,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. - 189 - LGE Internal Use Only Only for training and service purposes...
Page 189 SMD ,1608 ,EMI-ESD Filter, 4ch, 14V, 15pF, 100ohm FL406 FILTER,EMI/POWER SFEY0011701 SMD ,SMD ,18 V,4ch. EMI_ESD Filter (10 Ohm,7.5pF) LGE Internal Use Only - 190 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 190 82 ohm,1/16W ,J ,1005 ,R/TP R116 RES,CHIP,MAKER ERHZ0000512 82 ohm,1/16W ,J ,1005 ,R/TP R118 RES,CHIP,MAKER ERHZ0000490 51 ohm,1/16W ,J ,1005 ,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. - 191 - LGE Internal Use Only Only for training and service purposes...
Page 191 100 Kohm,1/16W ,J ,1005 ,R/TP R612 RES,CHIP ERHY0000290 300K ohm,1/16W,J,1005,R/TP R613 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only - 192 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 192 120 Kohm,1/16W ,F ,1005 ,R/TP R711 RES,CHIP ERHY0003201 1000 ohm,1/16W ,F ,1005 ,R/TP PCB ASSY,MAIN,PAD R721 SAFP0000501 SHORT Copyright © 2008 LG Electronics. Inc. All right reserved. - 193 - LGE Internal Use Only Only for training and service purposes...
Page 193 5.5 V, ,SMD ,1005, 50pF VA502 VARISTOR SEVY0005201 5.5 V, ,SMD ,1005, 50pF VA503 VARISTOR SEVY0005201 5.5 V, ,SMD ,1005, 50pF LGE Internal Use Only - 194 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 194 180 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP C110 CAP,CERAMIC,CHIP ECCH0001002 180 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP C111 CAP,CERAMIC,CHIP ECCH0000149 3.3 nF,50V,K,X7R,HD,1005,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. - 195 - LGE Internal Use Only Only for training and service purposes...
Page 195 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C205 CAP,CERAMIC,CHIP ECCH0000155 10 nF,16V,K,X7R,HD,1005,R/TP C206 CAP,CERAMIC,CHIP ECCH0000198 2.2 uF,6.3V ,M ,X5R ,TC ,1005 ,R/TP LGE Internal Use Only - 196 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 196 ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C232 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C233 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C234 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. - 197 - LGE Internal Use Only Only for training and service purposes...
Page 197 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C500 CAP,TANTAL,CHIP ECTH0003701 10 uF,6.3V ,M ,L_ESR ,1608 ,R/TP LGE Internal Use Only - 198 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 198 ECCH0006201 4.7 uF,6.3V ,K ,X5R ,TC ,1608 ,R/TP C536 CAP,CHIP,MAKER ECZH0001421 2.2 uF,6.3V ,K ,X5R ,HD ,1608 ,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. - 199 - LGE Internal Use Only Only for training and service purposes...
Page 199 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C723 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C724 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP LGE Internal Use Only - 200 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 200 L705 INDUCTOR,CHIP ELCH0012502 10 nH,G ,1005 ,R/TP ,chip coil L706 INDUCTOR,CHIP ELCH0012505 22 nH,G ,1005 ,R/TP ,Chip coil Copyright © 2008 LG Electronics. Inc. All right reserved. - 201 - LGE Internal Use Only Only for training and service purposes...
Page 201 100 Kohm,1/16W ,J ,1005 ,R/TP R304 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP R305 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only - 202 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 202 56K ohm,1/16W,F,1005,R/TP R718 RES,CHIP,MAKER ERHZ0000244 22 Kohm,1/16W ,F ,1005 ,R/TP R719 RES,CHIP,MAKER ERHZ0000407 1000 Kohm,1/16W ,J ,1005 ,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. - 203 - LGE Internal Use Only Only for training and service purposes...
Page 203 3.0 ,-2 dBd, ,BLUETOOTH, SMD, 8.0*2.0*1.3 ,; ,SINGLE ANT100 ANTENNA,GSM,FIXED SNGF0027401 ,-2.0 ,50 ,3.0 C100 CAP,CHIP,MAKER ECZH0000813 100 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP LGE Internal Use Only - 204 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 204 100 Kohm,1/16W ,J ,1005 ,R/TP R102 RES,CHIP,MAKER ERHZ0000422 15 Kohm,1/16W ,J ,1005 ,R/TP R103 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. - 205 - LGE Internal Use Only Only for training and service purposes...
Page 205 MAIN ,240*400 ,45.08*75*2.2 ,262k ,TFT ,TM ,DAC SVLM00 LCD MODULE SVLM0025501 G, 13 IC(Sharp) , SWCC00 CABLE,COAXIAL SWCC0004601 LGE Internal Use Only - 206 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 206: Accessory
100-240V ,5060 Hz,5.1 V,.7 A,CE ,AC-DC ADAPTOR ,; ADAPTOR,AC-DC SSAD0024503 ,85Vac~264Vac ,5.1V (+0.15V, -0.2V) ,700mA ,5060 , ,WALL 2P ,I/O CONNECTOR , Copyright © 2008 LG Electronics. Inc. All right reserved. - 207 - LGE Internal Use Only Only for training and service purposes...

LG KB770 Service 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

11 Exploded View & Replacement Part List

Quick Links

Troubleshooting

Related Manuals for LG KB770

Summary of Contents for LG KB770

Table of Contents