Page 1 Internal Use Only Service Manual CU720 Date: November, 2007 / Issue 1.0...
Page 2: Table Of Contents
4.10 Power ON Troubleshooting ....101 11.3 Accessory ..........203 4.11 Charger Troubleshooting .......103 4.12 USB Troubleshooting......106 4.13 USIM Detect Troubleshooting....108 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 3 - Only for training and service purposes...
Page 4: Introduction
The user may not make any changes and/or repairs expect as specifically noted in this manual. Therefore, note that unauthorized alternations or repair may affect the regulatory status of the system and may void any remaining warranty. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 5 -...
Page 5: Only For Training And Service Purposes
• When returning system boards or parts like EEPROM to the factory, use the protective package as described. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 6 - Only for training and service purposes...
Page 6: Performance
Yes (18 pin) Connectivity Bluetooth, USB Volume Key Push Type(+, -) External Memory Micro-SD I/O Connect 18 Pin Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 7 - 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 Copyright © 2007 LG Electronics. Inc. All right reserved. - 8 - Only for training and service purposes...
Page 8: Only For Training And Service Purposes
** In case of DCS : [A] -> 1710, [B] -> 1785 * In case of PCS : [A] -> 1850, [B] -> 1910 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 9 -...
Page 9: Only For Training And Service Purposes
±4 ±3 ±4 ±5 ±4 ±5 ±4 ±5 ±4 ±5 ±5 ±5 Burst timing Mask IN Mask IN LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 10 - Only for training and service purposes...
Page 10: Only For Training And Service Purposes
Power setting in uplink compressed ±3dB(after 14slots transmission gap) Occupied Bandwidth(OBW) 5MHz(99%) -35-15*(∆f-2.5)dBc@∆f=2.5~3.5MHz,30k -35-1*(∆f-3.5)dBc@∆f=3.5~7.5MHz,1M Spectrum emission Mask -39-10*(∆f-7.5)dBc@∆f=7.5~8.5MHz,1M -49dBc@∆f=8.5~12.5MHz,1M Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 11 - Only for training and service purposes...
Page 11: Only For Training And Service Purposes
Transmit Intermodulation -41dBc@10MHz, Interferer -40dBc 17.5%(>-20dBm) Error Vector Magnitude (EVM) (@12.2K, 1DPDCH+1DPCCH) -15dB@SF=4.768Kbps, Multi-code Transmit OFF Power transmission LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 12 - Only for training and service purposes...
Page 12: Only For Training And Service Purposes
Wanted Signal :-101dBm Wanted Signal :-101dBm (TCH/FS Class II, RBER) Unwanted : Depend on Frequency Unwanted : Depend on Frequency Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 13 - Only for training and service purposes...
Page 13: Only For Training And Service Purposes
-47dBm@f=1~12.5GHz, 1M BW -60dBm@f=1850 MHz ≤ f ≤ 1910 MHz, 3.84MBW -60dBm@f=824 MHz ≤ f ≤ 849 MHz, 3.84MBW LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 14 - Only for training and service purposes...
Page 14: Current Consumption
3.51± 0.05V (Stand-by) / 3.58 ± 0.05V (Talk) Low Voltage, Warning message+ Blinking [Interval : 3min(Stand-by) / 1min(Talk)] 3.10 ± 0.05V Power Off Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 15 - Only for training and service purposes...
Page 15: Sound Pressure Level
• Full charging indication current (charging icon stop current) : 80 mA • Cut-off voltage : 3.10 V LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 16 - Only for training and service purposes...
Page 16: Technical Brief
3. TECHNICAL BRIEF 3. TECHNICAL BRIEF 3.1 General Description The CU720 supports UMT-850, UMTS-1900, GSM-850, GSM-900, DCS-1800, and PCS-1900 based GSM/GPRS/EDGE/UMTS. All receivers and the UMTS transmitter use the radioOne Zero-IF architecture to eliminate intermediate frequencies, directly converting signals between RF and baseband.
Page 17: Only For Training And Service Purposes
3. TECHNICAL BRIEF A generic, high-level functional block diagram of CU720 is shown in Figure 1-1. One antenna collects base station forward link signals and radiates handset reverse link signals. The antenna connects with receive and transmit paths through a FEM(Front End Module)(plus two duplexers for UMTS highband and low-band operations).
Page 18: Gsm Mode
RX saw filters(GSM850, GSM900, GSM900, DCS and PCS). The antenna switch module allows multiple operating bands and modes to share the same antenna. In CU720, a common antenna connects to one of six paths: 1) UMTS-850 Rx/Tx, 2) UMTS-1900 Rx/Tx, 3) GSM-850 Rx, 4) GSM-900 Rx, 5) GSM-850/900 Tx(lo band Tx’s share the same path), 6) DCS-1800 Rx, and 7) DCS-1800, PCS-...
Page 19: Only For Training And Service Purposes
DC offset corrections. The filter outputs are buffered and passed on to the MSM6280 IC for further processing (an interface shared with the RFR6275 UMTS receiver outputs) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 20 - Only for training and service purposes...
Page 20: Only For Training And Service Purposes
3. TECHNICAL BRIEF [Fig 3.2.1] RTR6275 RX feature Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 21 - Only for training and service purposes...
Page 21: Only For Training And Service Purposes
PA and appear in the GSM Rx band LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 22 - 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 © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only...
Page 23: Only For Training And Service Purposes
The RTR6275 IC is able to support UMTS 2100/1900 and UMTS 850 mode transmitting. This design guideline shows only UMTS 1900 and UMTS 850 applications. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 24 - Only for training and service purposes...
Page 24: Only For Training And Service Purposes
3. TECHNICAL BRIEF [Figure 3.3.2] RTR6275 IC functional block diagram Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 25 - Only for training and service purposes...
Page 25: Lo Generation And Distribution Circuits
RTR6275 has the advantages of more flexible loop bandwidth control, fast lock time, and low-integrated phase error. 3.5 Off-chip RF Components 3.5.1 Front-End Module LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 26 - Only for training and service purposes...
Page 26: Only For Training And Service Purposes
• Insertion loss . this component is also in the receive and transmit paths ; In the CU720 typical losses : UMTS850_ Tx = 1.8 dB, Rx = 2.4 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: Only For Training And Service Purposes
DAC or DC-DC converter [Figure 3.5.3] WCDMA Dual PAM LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 28 - Only for training and service purposes...
Page 30: Only For Training And Service Purposes
300 mA (two), 150 mA (six), and 50 mA (three). These can be used to power MSMA, MSMP, RFRX1, RFRX2, RFTX, SYNT, TCXO, WLAN, MMC, USB, and RUIM circuits. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 31 -...
Page 31: Only For Training And Service Purposes
• 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 Copyright © 2007 LG Electronics. Inc. All right reserved. - 32 - Only for training and service purposes...
Page 32: Only For Training And Service Purposes
3. TECHNICAL BRIEF [Figure 3.5.5.1] MSM6280 Interface Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 33 - Only for training and service purposes...
Page 33: Only For Training And Service Purposes
3. TECHNICAL BRIEF [Figure3.5.5.2] PM6650 Block Diagram LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 34 - Only for training and service purposes...
Page 34: Only For Training And Service Purposes
C147 R114 GSM_SAW_SW_MODE C148 EGSM GSM850 HIGH remain LOW when not transmitting [Figure 3. 5.6] GSM PAM Schematic Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 35 - Only for training and service purposes...
Page 35: Only For Training And Service Purposes
-. Other frequencies of particular concern . bands known to include other wireless transmitters that may deliver significant power levels to the receiver input. [Figure3.5.7] WCDMA Rx SAW Filter Specification LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 36 - Only for training and service purposes...
Page 36: Only For Training And Service Purposes
RF module and Antenna. Figure1.5.12-1 shows the bluetooth system architecture in the CU720. MSM6280 Bluetooth baseband [Figure3.5.8] Bluetooth system architecture Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 37 - Only for training and service purposes...
Page 37: Digital Baseband (Msm6280)
• Vocoder support (AMR, FR, EFR, HR) • Advanced 14 x 14 mm, 0.5 mm pitch, 409-pin lead-free CSP packaging technology SD/SDIO hardware support LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 38 - Only for training and service purposes...
Page 38: Only For Training And Service Purposes
MP3, AAC, Rx ADC EVRC, QCELP AMR, CMX, MIDI Tx DAC USIM PM6650- Figure. Simplified Block Diagram of MSM6280 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 39 - Only for training and service purposes...
Page 39: Subsystem(Msm6280)
■ PS data rate - 384 kbps DL / 384 kbps UL ■ CS data rate - 64 kbps DL / 64 kbps UL ■ AMR (all rates) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 40 - Only for training and service purposes...
Page 40: Only For Training And Service Purposes
❏ 14.4k ❏ Fax ❏ Transparent and non-transparent modes for CS data and fax ❏ No sub-rates are supported. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 41 - Only for training and service purposes...
Page 41: Only For Training And Service Purposes
■ Audio Codecs: AMR-NB, AAC, AAC Plus, Enhanced AAC Plus, Windows Audio v9, Real Audio 8 (G2) ■ Internal vocoder supporting AMR, FR, EFR, and HR LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 42 - Only for training and service purposes...
Page 42: Only For Training And Service Purposes
■ Integrated 4-bit secure digital (SD) controller for SD and Mini SD cards ■ Parallel LCD interface ■ General-purpose I/O pins ■ External keypad interface Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 43 - Only for training and service purposes...
Page 43: Only For Training And Service Purposes
■ Integrated gpsOne processing ■ Standalone gpsOne mode in which the handset acts as a GPS receiver LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 44 - Only for training and service purposes...
Page 44: Only For Training And Service Purposes
■ Scalable Vector Graphics (SVG- Tiny 1.1 + SVG Tiny 1.2) ■ MLZ decoder ■ Integrated PNG/SAF A.T. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 45 - Only for training and service purposes...
Page 45: Only For Training And Service Purposes
ANSI/IEEE 1149.1A-1993 feature list. The JTAG interface can be used to test digital interconnects between devices within the mobile station during manufacture. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 46 - Only for training and service purposes...
Page 46: Only For Training And Service Purposes
The MSM6280 device integrates a universal serial bus (USB) controller that supports both unidirectional and bidirectional transceiver interfaces. The USB controller acts as a USB peripheral communicating with the USB host. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 47 -...
Page 47: Power Block
Interrupt Manager for time-critical information. Another dedicated IC Interface circuit monitors multiple trigger events and controls the power-on sequence. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 48 - Only for training and service purposes...
Page 48: Only For Training And Service Purposes
3. TECHNICAL BRIEF Figure 3.8.2. PM6650 Functional Block Diagram Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 49 - Only for training and service purposes...
Page 49: Only For Training And Service Purposes
3.65V~3.58V 3.57V~3.10V 4.2V~3.75V 3.74V~3.66V 44~20 (%) 19~0 (%) 100~70 (%) 69~45 (%) CU720 Battery Bar Display(Stand By Condition) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 50 - Only for training and service purposes...
Page 50: Only For Training And Service Purposes
(VBAT). Trickle charging can be used for lithium-ion and nickel-based batteries, with its performance specified below (3.2V). The charging current is set to 80mA. Parameter Unit Trickle Current Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 51 - Only for training and service purposes...
Page 51: Only For Training And Service Purposes
• Low battery alarm interval : Idle - 3 min, Dedicated - 1min • Cut-off voltage : 3.10V LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 52 - Only for training and service purposes...
Page 52: External Memory Interface
NAND TYA000BC00HOGG Toshiba 35 ns 30 ns SDRAM TYA000BC00HOGG Toshiba 30 ns 15 ns Table#1. External memory interface Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 53 - Only for training and service purposes...
Page 53: Only For Training And Service Purposes
DATA[7:0] MSM6280 DQM[3:0] SDCC_DATA[3:0] External Memory SDCC_CMD Micro SD card SDCC_CLK Figure. Simplified Block Diagram of Memory Interface LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 54 - Only for training and service purposes...
Page 54: H/W Sub System
GRFX6_GPIO9 ANT_SEL0 GRFC5_AUX_SBST_GPIO8 GSM_SAW_SW_MODE GRFC4_AUX_SBCK_GPIO7 GRFC3_GPIO6 GRFC2_GPIO5 GSM_PA_BAND GRFC1_AUX_SBDT_GPIO4 GSM_PA_EN GRFC0_GPIO3 Figure. Schematic of RF Interface of MSM6280 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 55 - Only for training and service purposes...
Page 55: Only For Training And Service Purposes
• GSM_PA_RAMP : Power Amp Gain Control of APC_IC • GSM_PA_EN : Power Amp Gain Control Enable of APC_IC LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 56 - Only for training and service purposes...
Page 56: Only For Training And Service Purposes
UART signals are connected to MSM GPIO through IO connector with 115200 bps speed. GPIO_Map Name Note GPIO_96 UART_RXD Data_Rx GPIO_95 UART_TXD Data_Tx Table. UART Interface Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 57 - Only for training and service purposes...
Page 57: Only For Training And Service Purposes
USB_SE0 USB_SE0 USB_D- USB_D_M GP1_DRV_N(MPP7) R415 C421 4.7u 1608 Figure. Schematic of USB block(MSM6280 Side & PM6650 Side) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 58 - Only for training and service purposes...
Page 58: Only For Training And Service Purposes
REMOTE_ADC Do not use HKADC4 PCB_Rev_ADC PCB Version Check HKADC5 Battery_THERM Battery Temperature Check Table. HKADC channel table Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 59 - Only for training and service purposes...
Page 59: Only For Training And Service Purposes
RA701 BACK KEY_ROW(0) KEY_ROW(1) KEY_ROW(2) KEY_ROW(3) HOT701 HOT702 KEY_COL(0) HOT4 HOT5 KEY_ROW(4) KEY_COL(1) KEY_COL(2) Figure. Main Keypad Circuit LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 60 - Only for training and service purposes...
Page 60: Only For Training And Service Purposes
Figure. Multi-function Keypad Circuit CN701 R701 KEY_ROW(4) R702 KEY_ROW(3) R703 100ohm R704 100ohm KEY_COL(3) KEY_COL(4) Rev.1.0 Figure. Side Keypad Circuit Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 61 - Only for training and service purposes...
Page 61: Only For Training And Service Purposes
KEY_ROW(0) COM3 PUSH LEFT RIGHT KEY_ROW(2) KEY_ROW(1) COM1 KEY_COL(5) R905 DOWN KEY_ROW(3) NAVIGATION KEY Figure. Navigation-key Keypad Circuit LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 62 - Only for training and service purposes...
Page 62: Only For Training And Service Purposes
CAM_PCLK_C CAM_VDDIO_2.8V M_CAM_RESET_N 2M_CAM_VDDC_1.5V rev.1.0 Rev.C M_CAM_PWDN C813 Rev.C AXK7L24227 Rev.D Figure. Camera PCB Board to Board Connector Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 63 - Only for training and service purposes...
Page 63: Only For Training And Service Purposes
I2C_SDA I2C Data I2C_SCL I2C Clock Table. Interface between MEGA Camera Module and MAIN PCB (in camera module) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 64 - Only for training and service purposes...
Page 64: Only For Training And Service Purposes
2.7V. This folder signal is delivered to MSM6280 GPIO92. SLIDE DETECT U701 EM-1681-FT VREG_MSMP_2.7V FOLDER_DETECT C701 Rev.C 0.1u Figure. Schematic of Folder ON/OFF detection circuit Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 65 - Only for training and service purposes...
Page 65: Only For Training And Service Purposes
100ohm SSC-TWH104-HL LD901 R904 100ohm SSC-TWH104-HL Figure. Schematic of KEY back light circuit ( UP slide side ) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 66 - Only for training and service purposes...
Page 66 3. TECHNICAL BRIEF 3.10.8. LCD Module (IM220DBN2A : LG INNOTEK) - The IM220DBN2A model is a Color TFT Main supplied by LG Innotek. This LCD Module has a 2.2 inch diagonally measured active display area with 240(RGB)X320 resolution. each pixel is divided into Red, Green and Blue sub-pixels and dots which are arranged in vertical stripes.
Page 67: Only For Training And Service Purposes
FL605 LCD_VSYNC_F INOUT_B1 INOUT_A1 LCD_VSYNC Rev.1.0 LCD_CS_N_F LCD_CS_N INOUT_B2 INOUT_A2 LCD_ADS_F INOUT_B3 INOUT_A3 LCD_ADS EBI2_WE_N_F INOUT_B4 INOUT_A4 EBI2_WE_N LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 68 - Only for training and service purposes...
Page 68: Only For Training And Service Purposes
The microphone interface consists of two differential microphone inputs, one differential auxiliary input and a two-stage audio amplifier. (+16.5dB) Figure. Audio Interface Detailed Diagram(MSM6280) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 69 - Only for training and service purposes...
Page 69: Only For Training And Service Purposes
0.1u rev.1.0.2 (CODEC VSS) SDCC_DAT1_GPIO99 MICROSD_DATA(1) SDCC_DAT2_GPIO100 MICROSD_DATA(2) SDCC_DAT3_GPIO101 MICROSD_DATA(3) MDP_VSYNC_SECONDA_GPIO104 MDP_VSYNC_PRIMARY_GPIO105 LCD_VSYNC Figure . Audio part schematics LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 70 - Only for training and service purposes...
Page 70: Only For Training And Service Purposes
Rev.1.0 Rev.1.0.2 MIC2P R302 resistor EAR_MIC2P TTY_ADC_DET Rev.1.0.3 Rev.1.0 Hook Key Logic Deleted Figure . Audio part schematics Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 71 - Only for training and service purposes...
Page 71: Only For Training And Service Purposes
VBATT R505 VBAT_SENSE REMOTE_PWR_ON 470K USB_VBUS UART_TX UART_RX_IN CN502 rev.1.0.3 HSEJ 18S04 25R Figure . Audio part schematics LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 72 - Only for training and service purposes...
Page 72: Only For Training And Service Purposes
8 ohm Speaker MIC301 SPM0204HE5-PB-3 -42 dB microphone Ear jack 18PIN NOT INBOX Table. Audio main component list Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 73 - 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 - 910 mAh (Li-Ion) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 74 - Only for training and service purposes...
Page 74: Only For Training And Service Purposes
Logic /Audio Bluetooth Bluetoot h ANT. Main board, Bottom Main board, Top SUB-PCB (Top) LCD-FPCB (Folder) SUB-PCB (Bottom) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 75 - Only for training and service purposes...
Page 75: Only For Training And Service Purposes
RTR6275 FL101 U107 RFR6275 Front End module U102 GSM PAM WCDMA PAM U106 X101 VCTCXO M101 BT module LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 76 - Only for training and service purposes...
Page 76: Only For Training And Service Purposes
Main to Key-FPCB CN601 CN501 (18pin) Connector Battery connector U201 CN502 MSM6280 U302 Audio AMP Main to SUB Conn. CN702 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 77 - Only for training and service purposes...
Page 77: Only For Training And Service Purposes
3. TECHNICAL BRIEF Logic LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 78 - Only for training and service purposes...
Page 78: Trouble Shooting
4. TROUBLE SHOOTING 4. TROUBLE SHOOTING 4.1 RF Component [Fig 4.1.1] BOTTOM SIDE Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 79 - Only for training and service purposes...
Page 79: Component Description
B7847 W1900 RX SAW filter U102 TQM7M5003 GSM TX Dual PAM FL102 LMSM32AA-533 G850/900 Dual TX SAW Filter LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 80 - Only for training and service purposes...
Page 80: Wcdma Rf Signal Path
4.3 WCDMA RF Signal Path W850 TX path W850 RX path W1900 TX path W1900 RX path TX/RX IQ Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 81 - Only for training and service purposes...
Page 81: Gsm Rf Signal Path
G850 Rx path G850/G900 TX path G900 Rx path DCS/PCS TX path DCS RX path TX/RX IQ PCS RX path LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 82 - Only for training and service purposes...
Page 82: Checking Vctcxo Block
[Fig 4.5.1] Schematic of the TCXO Block [Fig 4.5.2] VCTCXO 19.2MHz Wave [Fig 4.5.3] Test Point of the TCXO Block Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 83 - Only for training and service purposes...
Page 83: Only For Training And Service Purposes
Check C411 of PMIC (U402) Check R214 of MSM (U200) [Fig 4.5.3] Test Point of the TCXO Block LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 84 - Only for training and service purposes...
Page 84: Checking Front-End Module Block
[Fig4.6.1] Schematic of the Front-End Module Block ANT_SEL3 ANT_SEL2 ANT_SEL1 ANT_SEL0 [Fig4.6.2] Test Point of the Front-End Module Block Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 85 - Only for training and service purposes...
Page 85: Only For Training And Service Purposes
4. TROUBLE SHOOTING [Fig 4.6.3] Logic Table of the FEM [Fig 4.6.4] Check Flow of the FEM LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 86 - Only for training and service purposes...
Page 86: Checking Wcdma Block
C172 L127 1.5p C171 4.7nH rev.1.0.2 FL104 C174 ACMD-7402-TR1G 0.01u [Fig 4.7.1.2] Schematic of the WCDMA TX Block Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 87 - Only for training and service purposes...
Page 87: Only For Training And Service Purposes
Check TP4 or TP5 Check FEM FL101 Check PAM block Over 22dBm? [Fig 4.7.1.3] Check Flow of the WCDMA TX Block LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 88 - Only for training and service purposes...
Page 88: Only For Training And Service Purposes
(Check C174) (Check C163) WCDMA +VPWR 850&1900 Coupler PWR_DET (R119) [Fig 4.7.2.1] Test point of the WCDMA PAM Block Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 89 - Only for training and service purposes...
Page 89: Only For Training And Service Purposes
REV.D C168 6.8nH C169 C167 RX_WCDMA_1900 REV.D C171 FL104 ACMD-7402-TR1G [Fig 4.7.3.2] Schematic of the WCDMA RX Block LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 90 - Only for training and service purposes...
Page 90: Only For Training And Service Purposes
Check the RTR6275 Check TP7 & TP8 IQ signal Signal exist? [Fig 4.7.3.3] Check Flow of the WCDMA RX Block Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 91 - Only for training and service purposes...
Page 91: Checking Gsm Block
GSM_SAW_SW_MODE C148 EGSM GSM850 HIGH remain LOW when not transmitting [Fig 4.8.1.2] Schematic of the GSM TX Block LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 92 - Only for training and service purposes...
Page 92: Only For Training And Service Purposes
4. TROUBLE SHOOTING [Fig 4.8.1.3] Check Flow of the GSM TX Block Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 93 - Only for training and service purposes...
Page 93: Only For Training And Service Purposes
GSM_SAW_SW_MODE C148 EGSM GSM850 HIGH remain LOW when not transmitting [Fig 4.8.2.2] Schematic of the GSM PAM Block LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 94 - Only for training and service purposes...
Page 94: Only For Training And Service Purposes
L115 22nH rev.1.0.2 GSM850 L116 22nH L119 L120 22nH [Fig 4.8.3.2] Schematic of the GSM RX Block Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 95 - Only for training and service purposes...
Page 95: Only For Training And Service Purposes
4. TROUBLE SHOOTING G850/900/DCS/PCS Rx is OK. [Fig 4.8.3.3] Check Flow of the GSM RX Block LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 96 - Only for training and service purposes...
Page 96: Only For Training And Service Purposes
4. TROUBLE SHOOTING RTR6275 Tx_QP Wave RTR6275 Rx_QP Wave Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 97 - Only for training and service purposes...
Page 97: Checking Bluetooth Block
C176 VDD_BAT XTAL_IN TCXO_BT 0.1u 100p VREG_BT_2.85V C192 C189 100p 2.2u [Fig 4.9.2] Schematic of the Bluetooth Block LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 98 - Only for training and service purposes...
Page 98: Only For Training And Service Purposes
4. TROUBLE SHOOTING [TP3] TCXO_BT Wave [TP5] BT_CLK Wave Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 99 - Only for training and service purposes...
Page 99: Only For Training And Service Purposes
Is clock ok? 19.2M Change the M101 Signals exits? Change the Main board [Fig 4.9.3] Check Flow of the Bluetooth Block LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 100 - Only for training and service purposes...
Page 100: Power On Troubleshooting
VREG_MSMA_2.6V power up? Is clock ok? Check the TXCO R411 : 19.2M X401 : 32.768Khz Change the Main board Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 101 - Only for training and service purposes...
Page 101: Only For Training And Service Purposes
VREG_MSM E X401 : 32.768Khz R406 PM6650IC : 19.2Mhz VREG_MSMP VREG_MSMA VREG_TCXO [ CU720 MAIN Bottom (near PM6650IC) ] LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 102 - Only for training and service purposes...
Page 102: Charger Troubleshooting
- Check the charger (TA or USB Cable) connector - Check the charging current Path - Check the battery Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 103 - Only for training and service purposes...
Page 103: Only For Training And Service Purposes
5.1V? Is it charging properly After turning on U401 ? Change the board [ Charger Troubleshooting Flow ] LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 104 - Only for training and service purposes...
Page 104: Only For Training And Service Purposes
EMITTER2 BASE2 USB_CNT_N ICHARGE COLLECTOR GATE BATT_FET_N SOURCE DRAIN VBATT NUS3116MTR2G ICHARGEOUT +VPWR [ Charging part schematics ] Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 105 - Only for training and service purposes...
Page 105: Usb Troubleshooting
4. TROUBLE SHOOTING 4.12 USB Troubleshooting USB Initial sequence of CU720 is : USB connected to CU720 power on → USB_VBUS(U401) go to 5V → USB_D+ go to 3.3V → USB_VP and → USB_VN is triggered → USB work. Start...
Page 106: Only For Training And Service Purposes
TP501 TP502 REMOTE_INT REMOTE_ADC FSA2257L10X => N/A (rev.1.0.4) USB+_RINT USB_D+ USB-_RADC USB_D- Rev.1.0.4 [ USB part Schematics ] Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 107 - Only for training and service purposes...
Page 107: Usim Detect Troubleshooting
Work well? VREG_UIM_2.85V is 2.85V? Check CN802 USIM_P_CLK is run? Change SIM card Work well? Change the Main board LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 108 - Only for training and service purposes...
Page 108: Only For Training And Service Purposes
USIM_P_CLK USIM_P_DATA USIM R807 CN802 VREG_USIM_2.85V USIM_P_RST_N USIM_P_DATA USIM_P_CLK GND2 GND1 KCN-2T-0-0075 Rev.1.1 C814 Figure .USIM part schemetics Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 109 - Only for training and service purposes...
Page 109: Camera Troubleshooting
Check the CAM_MCLK (FB800) Change the Main board CAM_VDDIO_2.8V is 2.8V?(C802) Change the camera Camera is OK Change the Main board LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 110 - Only for training and service purposes...
Page 110 Change the Main board Check the CAM_MCLK (FB800) Change the camera Camera is OK Change the Main board Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 111 - Only for training and service purposes...
Page 111 2M_CAM_VDDA_2.8V CAM_VDDIO_2.8V 2M_CAM_VDDC_1.5V rev.1.0 Rev.C C813 Rev.C AXK7L24227 SETM FLASH_LED_ANODE SETF LDO1 CAM_VDDIO_2.8V REFBP LDO2 CAM_VDDC_1.8V C606 C607 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 112 - Only for training and service purposes...
Page 112: Keypad Backlight Troubleshooting
100ohm LEWWS44-E +VPWR Rev.1.0.3 R711 Q701 KEY_BL_EN PMST3904 4.7K VA712 RSB6.8CST2R Rev.1.0.3 Figure .MAIN key backlight LED part Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 113 - Only for training and service purposes...
Page 113 + VPWR LD900 R903 +VPWR KYBD_BACKLIGHT 100ohm SSC-TWH104-HL LD901 R904 100ohm SSC-TWH104-HL Figure .UP Slide backlight LED part LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 114 - Only for training and service purposes...
Page 114: Folder On/Off Troubleshooting
U701 C701 Rev.C 0.1u FOLDER_DETECT Change the U701 is 0V? Change the Main board Magnet Hall effect IC Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 115 - Only for training and service purposes...
Page 115: Main Lcd Troubleshooting
Change the LCD module LCD display OK? Change the Main board LCD display OK? Change the LCD FPCB LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 116 - Only for training and service purposes...
Page 116: Receiver Path
Check CN901 PIN28,PIN29,CN601? The sine wave appears at Check the analog switch R315, R317? Change the Main board Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 117 - Only for training and service purposes...
Page 118: Headset Path
Sine wave appears at Change the Headset R502/R503? Sine wave appears at Check the Headphone Amp C501/C502? Change the Main board Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 119 - Only for training and service purposes...
Page 120: Speaker Phone Path
SPK_N,SPK_P LCD FPCB? Check LCD FPCB. The sine wave appears at Check CN901 PIN28,PIN29,CN601? Change the Main board Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 121 - Only for training and service purposes...
Page 121 4. TROUBLE SHOOTING U302 Analog Switch U302 Audio Amplifier C314,R318 / C315, R320 SPK_RCV LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 122 - Only for training and service purposes...
Page 122: Main Microphone
Make sound to MIC Sine wave appears at Change the MIC C231? Change the Main board Work well? Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 123 - Only for training and service purposes...
Page 124: Headset Microphone
1.8V? (R301) Change the headset or Sine wave appears at Main board and retry. C229? Change the Main board Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 125 - Only for training and service purposes...
Page 126: Vibrator
? Change vibrator +VPWR U602 Rev.D SUY98005LT1G R610 MOTOR_EN R611 L601 MOTOR_PWR- VOUT R612 100nH C608 100K Rev.D Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 127 - Only for training and service purposes...
Page 127: Download
LGMDP supports Windows 2000/XP where the LG (Ver 4.6 or later) USB modem driver is installed. Additionally, LGMDP allows multi downloading up to 8 handsets at the same time.
Page 128: Connecting To Pc
Then click on the Connect button. (The port number(COM7) and model name shall be different from that of the port number in the snapshot.) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only...
Page 129 PC to the handset, a progressive bar (Red box) indicating the degree of transmission of data is displayed. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 130 - Only for training and service purposes...
Page 130 The following slide describes how to use or set options in detail. (The model name shall be different from that of the model name in the snapshot.) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only...
Page 131 6) Clear: Clearing all directory paths of images in the dialog. 7) Start : Starting downloading the selected individual image. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 132 - Only for training and service purposes...
Page 132 (The folder name shall be different from that of the folder name in the snapshot. The folder name indicates the path where the image files are located.) ★ if you select the image folder, the program will automatically load images accordingly. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 133 -...
Page 133 5. DOWNLOAD ★ if you select the image folder, the program will automatically load images accordingly. Automatically load images LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 134 - Only for training and service purposes...
Page 134 Normally LGMDP will downloaded all files that need downloading. To download selected image file only simply select the image file that user want to process downloading. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 135 -...
Page 135 The following flow chart is whole process for downloading images to the handset. You will see snapshots for each step in the succeeding slides. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 136 - Only for training and service purposes...
Page 136 • Erasing the existing directories and files before the Module image is downloaded. • Downloading the AMSS modem image Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 137 - Only for training and service purposes...
Page 137 • Erasing the existing directories and files before downloading the selected Media image • Downloading Media image in progress LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 138 - Only for training and service purposes...
Page 138 5. DOWNLOAD • Downloading Module image in progress • Downloading process has completed successfully Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 139 - Only for training and service purposes...
Page 139 Select directory to store log files by clicking on the … button. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 140 - Only for training and service purposes...
Page 141 5. DOWNLOAD 5.3.2 NV Restore error When you meet the “NV Restore error”, LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 142 - Only for training and service purposes...
Page 144 ➞ Click on ‘NV Restore’ then several NV Backup files(*.nv2) are shown. ★ The files are saved every NV Backup. The name is based on the time when NV Backup is done.) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only...
Page 146 5. DOWNLOAD ➞ If you want image download and NV backup file restore at once, use the NV Default function. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 147 - Only for training and service purposes...
Page 148: Caution
5) Recommended that the Module and Media Image have to be downloaded at the same time. 6) Erase EFS option will erase everything (media, module, nv items, and user data) in the EFS area. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only...
Page 149: Block Diagram
6. BLOCK DIAGRAM 6. BLOCK DIAGRAM 6.1 GSM & UMTS RF Block [Fig 6.1] RF Functional Block Diagram LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 150 - Only for training and service purposes...
Page 150 UMTS850 RX SAW filter FL107 B7847 UMTS1900 RX SAW flter FL103 B7638 UMTS850 Duplexer FL104 ACMD-7402-TR1G UMTS1900 Duplexer RF Block Component Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 151 - Only for training and service purposes...
Page 151: Interface Diagram
6. BLOCK DIAGRAM 6.2 Interface Diagram 6.2.1 RTR6275 & MSM6280 Interface Diagram [Fig 6.2.1] RTR6275 & MSM6280 Interface Diagram LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 152 - Only for training and service purposes...
Page 152: Memory Interface
6. BLOCK DIAGRAM 6.2.2. Memory Interface [Fig 6.2.2] Memory Interface Diagram Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 153 - Only for training and service purposes...
Page 153 6. BLOCK DIAGRAM 6.2.3. Interface USB, UART, SIM, JTAG [Fig 6.2.3] USB, UART, SIM, JTAG Interface LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 154 - Only for training and service purposes...
Page 154 Power Amp Gain Control GSM_PA_RAMP UMTS850/1900 GSM850Tx/Rx,, ANT_SEL 0,1,2,3 Ant Switch Module Mode Selection GSM900Tx/Rx, DCS Tx/Rx, PCS Tx/Rx Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 155 - Only for training and service purposes...
Page 158: Circuit Diagram
100p C207 C208 C209 C210 0.1u 0.1u END Ref. R132, L141 LG Electronics Inc. LG Electronics Inc. LGMC Copyright © 2007 LG Electronics. Inc. All right reserved. - 159 - LGE Internal Use Only Only for training and service purposes...
Page 159 Place near 0.1u MSM pin AD26 (Check CAM_DATA PINOUT !!!!) END Ref. R218, C268, TP202, U200, X200 LGMC LGE Internal Use Only - 160 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 160 MIC301 NC21 NC82 MIC1N MIC1P rev.1.0.3 SPM0204HE5-PB-3 R326 Rev.1.0 END Ref C325, R326, U303, TP305, Q300, FB301 LGMC Copyright © 2007 LG Electronics. Inc. All right reserved. - 161 - LGE Internal Use Only Only for training and service purposes...
Page 161 --->> USB_VBUS , FLASH_DRV_N , KPD_DRV_N , KEY_ON_SW_N , MOT_PWR- END Ref C434, R417, Q402, BAT400, D404, X400, U400, CN400, L402 LGMC LGE Internal Use Only - 162 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 162 => N/A (rev.1.0.4) OJ507 OJ508 USB+_RINT USB_D+ USB-_RADC USB_D- END Ref Rev.1.0.4 R510, C525, U504, VA509, D502, CN501 LGMC Copyright © 2007 LG Electronics. Inc. All right reserved. - 163 - LGE Internal Use Only Only for training and service purposes...
Page 163 LCD_VSYNC_F INOUT_B1 INOUT_A1 LCD_VSYNC Rev.1.0 LCD_CS_N_F INOUT_B2 INOUT_A2 LCD_CS_N LCD_ADS_F INOUT_B3 INOUT_A3 LCD_ADS EBI2_WE_N_F EBI2_WE_N INOUT_B4 INOUT_A4 LGMC LGE Internal Use Only - 164 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 164 I2C_SDA MICROSD_CMD Rev.D UART_TX MICROSD_DATA(0) CAM_VSYNC MICROSD_DATA(1) CAM_HSYNC MICROSD_DATA(2) CAM_MCLK MICROSD_DATA(3) Rev.D REMOTE_PWR_ON MICROSD_DETECT VREG_MICROSD_3.0V MICROSD_CLK AXK840225WG LGMC Copyright © 2007 LG Electronics. Inc. All right reserved. - 165 - LGE Internal Use Only Only for training and service purposes...
Page 165 0.1u VA811 EVLC14S02050 TP802 UART_TX C811 C805 C804 TP803 REMOTE_PWR_ON C812 BGND 0.1u LG(42)-A-5505-10:01 LG Electronics Inc. LGMC LGE Internal Use Only - 166 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 166 R905 DOWN KEY_ROW(3) VISION MARK NAVIGATION KEY TP900 TP901 TP902 TP903 TP904 TP905 LGIC(42)-A-5505-10:01 LG Electronics Inc. LGMC Copyright © 2007 LG Electronics. Inc. All right reserved. - 167 - LGE Internal Use Only Only for training and service purposes...
Page 168: Bga Ic Pin Map
8. BGA Pin Map 8. BGA Pin Map [U303 Memory device PIN map] [U201 MSM6280 device PIN map] Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 169 - Only for training and service purposes...
Page 170: Pcb Layout
No Flash LED : Pin #1 No Camera : + (positive) : : NA ANT104 Bluetooth Ant. BT connection Copyright © 2007 LG Electronics. Inc. All right reserved. - 171 - LGE Internal Use Only Only for training and service purposes...
Page 171 WCDMA Tx Power & Rx BT connection Sensitivity No Service U106 WCDMA PAM WCDMA Tx Power No Service LGE Internal Use Only - 172 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 173 9. PCB LAYOUT U800 2M CAM LDO No Camera CN800 2M CAM conn. No Camera LGMC LGE Internal Use Only - 174 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 176: Calibration & Rf Auto Test Program (Hot Kimchi)
CU720 AutoSetup_200.xml Cal_Setup_Test.xml LG_RfTest_E5515C_107.dll LG_NsTest_E5515C_239.dll Ezlooks.xml QMSL_MSVC6R.dll LG_RfCal_Q3G6280Rev_051.dll NstProcedure_CU515_001.xml LG_UI_Qu6275_004.dll script_001.xml : Directory Multi HK.reg Spec_FullBand_013.xml : File Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 177 - Only for training and service purposes...
Page 177 5. LG_NsTest_E5515C_239.dll : Auto RF-Test DLL File including RF Test sequence functions 6. DLL_E5515CD.DLL : GPIB DLL File including measuring functions in E5515CD Test Set LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 178 - Only for training and service purposes...
Page 178: How To Use Hot Kimchi
3. Select “LOGIC MODE” that you want - Logic Mode -> 1: Calibration Only 2: Auto Test Only 3: Calibration + Auto Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 179 - Only for training and service purposes...
Page 179 ➄ Click "Start" ➃ Select "CU720" * Procedure 4. Select the model name “CU720” 5. Click “Start” button LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 180 - Only for training and service purposes...
Page 180: Exploded View & Replacement Part List
11. EXPLODED VIEW & REPLACEMENT PART LIST 11.1 EXPLODED VIEW 19 20 10 11 46 47 Copyright © 2007 LG Electronics. Inc. All right reserved. - 181 - LGE Internal Use Only Only for training and service purposes...
Page 182: Replacement Parts
MOLD, POM LUCEL FW-700A, , , , , Gray MFBD00 FILTER,MIKE MFBD0025201 COMPLEX, (empty), , , , , Without Color Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 183 - Only for training and service purposes...
Page 183 Without Color MPBZ02 MPBZ0194401 COMPLEX, (empty), , , , , Without Color Aluminum MRAA00 RAIL,SLIDE MRAA0005101 25,H Silver LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 184 - Only for training and service purposes...
Page 184 CAN,SHIELD MCBA0021001 PRESS, STS, 0.3, , , , Without Color MLAB00 LABEL,A/S MLAB0001102 C2000 USASV DIA 4.0 White Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 185 - Only for training and service purposes...
Page 185: Main Component
PCB ASSY,MAIN SAFY0224501 37,M SAFB00 PCB ASSY,MAIN,INSERT SAFB0077701 ACKA00 CAN ASSY,SHIELD ACKA0003001 Without Color ADCA00 DOME ASSY,METAL ADCA0069401 White LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 186 - Only for training and service purposes...
Page 186 33 nH,J ,1005 ,R/TP , C131 CAP,CERAMIC,CHIP ECCH0000115 22 pF,50V,J,NP0,TC,1005,R/TP C132 CAP,CERAMIC,CHIP ECCH0000138 390 pF,50V,K,X7R,HD,1005,R/TP C133 CAP,CERAMIC,CHIP ECCH0000115 22 pF,50V,J,NP0,TC,1005,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 187 - Only for training and service purposes...
Page 187 C172 CAP,CHIP,MAKER ECZH0000822 1.5 pF,50V ,C ,NP0 ,TC ,1005 ,R/TP C173 INDUCTOR,CHIP ELCH0004721 2.2 nH,S ,1005 ,R/TP , LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 188 - Only for training and service purposes...
Page 188 33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP C210 CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C221 CAP,CERAMIC,CHIP ECCH0000115 22 pF,50V,J,NP0,TC,1005,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 189 - Only for training and service purposes...
Page 189 ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C256 CAP,CERAMIC,CHIP ECCH0000155 10 nF,16V,K,X7R,HD,1005,R/TP C257 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C258 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 190 - Only for training and service purposes...
Page 190 ECCH0006201 4.7 uF,6.3V ,K ,X5R ,TC ,1608 ,R/TP C406 CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 191 - Only for training and service purposes...
Page 191 ,-55TO+125C , ,2.2X1.1X1.1MM ,[empty] ,[empty] ,[empty] C508 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C509 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 192 - Only for training and service purposes...
Page 192 DUPLEXER,DCN SDDY0004001 dB,3.0*2.5*1.2 ,SMD ,LTCC Type 1880 MHz,1960 MHz,3.8 dB,3.5 dB,43 dB,52 FL104 DUPLEXER,PCS SDPY0002902 dB,3.8*3.8*1.4 ,SMD ,FBAR Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 193 - Only for training and service purposes...
Page 193 4.7 nH,S ,1005 ,R/TP , L129 INDUCTOR,CHIP ELCH0001420 3.9 nH,S ,1005 ,R/TP ,PBFREE L130 INDUCTOR,CHIP ELCH0001031 15 nH,J ,1005 ,R/TP ,PBFREE LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 194 - Only for training and service purposes...
Page 194 100 Kohm,1/16W ,J ,1005 ,R/TP R118 RES,CHIP,MAKER ERHZ0000490 51 ohm,1/16W ,J ,1005 ,R/TP R119 RES,CHIP,MAKER ERHZ0000490 51 ohm,1/16W ,J ,1005 ,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 195 - Only for training and service purposes...
Page 195 470 Kohm,1/16W ,J ,1005 ,R/TP R409 RES,CHIP,MAKER ERHZ0000405 10 Kohm,1/16W ,J ,1005 ,R/TP R411 RES,CHIP,MAKER ERHZ0000490 51 ohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 196 - Only for training and service purposes...
Page 196 QFN ,48 PIN,R/TP ,WCDMA Dual Receiver IC for USA, U107 EUSY0300401 7X7X0.9 CSP ,409 PIN,R/TP ,WCDMA/GSM/GPRS/EDGE/HSDPA U201 EUSY0295601 Base Band Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 197 - Only for training and service purposes...
Page 197 14 V, ,SMD ,50pF, 1005 VA703 VARISTOR SEVY0001001 14 V, ,SMD ,50pF, 1005 VA704 VARISTOR SEVY0001001 14 V, ,SMD ,50pF, 1005 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 198 - Only for training and service purposes...
Page 198 100 Kohm,1/16W ,J ,1005 ,R/TP R607 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP R608 RES,CHIP,MAKER ERHZ0000533 7.5 Kohm,1/16W ,J ,1005 ,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 199 - Only for training and service purposes...
Page 199 ECTZ0005201 10 uF,6.3V ,M ,L_ESR ,1608 ,R/TP CONNECTOR,BOARD TO CN800 ENBY0020401 24 PIN,0.4 mm,ETC , ,H=0.9, Socket BOARD LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 200 - Only for training and service purposes...
Page 200 CN801 ENBY0043901 BOARD ,FEMALE ,SMD ,[empty] , , S800 CONN,SOCKET ENSY0018801 8 PIN,ETC , ,2.54 mm,Micro-SD Socket, Normal Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 201 - Only for training and service purposes...
Page 201 SPJY00 PCB,SUB SPJY0045901 FR-4 ,0.6 mm,BUILD-UP 4 , ,; , , , , , , , , , LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 202 - Only for training and service purposes...
Page 202: Accessory
PALLET ASSY(for CU400 CGR 5sets mbox) Without Color PACKING,BLISTER(UPPER MPAB00 MPAB0001702 COMPLEX, (empty), , , , , Without Color Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 203 - Only for training and service purposes...
Page 203 Note...
Page 204 Note...

LG CU720 Service Manual

1 Introduction

2 Performance

3 Technical Brief

4 Trouble Shooting

5 Download

6 Block Diagram

7 Circuit Diagram

8 Bga IC Pin Map

9 Pcb Layout

10 Calibration & RF Auto Test Program (Hot Kimchi)

11 Exploded View & Replacement Part List

Quick Links

Troubleshooting

Related Manuals for LG CU720

Summary of Contents for LG CU720

Table of Contents