LG CU920 Manuals

LG Unlocking Instructions Go to: www.ExpressUnlocks.com to purchase your code! How to Enter Unlock Code on LG CU320: 1) Power on the handset 2) In Idle screen, input the special code "277634#*#". 3) Enter the SIM Unlock code 4) Access the submenu "SIM Test" in Phone Test Mode. 5) Input the special code "2945#*#". 6) Access the submenu "SIM Unlock" which is just activated after the special code. 7) Input the 8-digit Unlock code in the "Enter unlock code" input screen. 8) It will be unlocked. How to Enter Unlock Code on LG CU400/CU405: 1) Insert non-Cingular SIM card" 2) Power on the handset - Phone will display "Invalid SmartChip". 3) Enter 159753#*# 4) Enter the 8 digit SIM Unlock code 5) Select "OK". 6) The handset will be unlocked. How to Enter Unlock Code on LG CU500: 1) Insert non-Cingular SIM card. 2) Power on the handset. Phone will display "Invalid SmartChip" 3) (IF THE PHONE DOES NOT DISPLAY INVALID SMARTCHIP, PLEASE POWER OFF AND ON AGAIN) 4) In Idle screen, enter 159753#*#. Phone will display "Enter NCK, Remaining 5 5) Enter the 8 digit SIM unlock code 6) Select "OK" 7) The handset is now successfully unlocked. How to Enter Unlock Code on LG CU515: 1) Insert non-Cingular SIM card 2) Power on the handset - Phone will display "Invalid SmartChip". 3) Enter *#865625# then select option 1 and then again select 1 4) Enter the 16 digit SIM Unlock code 5) Device should say: Network Lock Deactivated 6) The handset is unlocked. How to Enter Unlock Code on LG CU575 (Trax): 1) Put a non-Cingular sim in the phone 2) Phone says invalid smart chip 3) Now enter *#865625# then select option 1 and then again select 1 4) Enter your 16 digits code 5) Device should say: Network Lock Deactivated 6) The handset is unlocked. How to Enter Unlock Code on LG CU720/TU720 (Shine):

Con el elegante y sensacional teléfono Vu™ de LG podrás ver el mundo de forma totalmente diferente, podrás mirar televisión de excelente calidad, navegar por la web, ver fotos o videos en una pantalla táctil grande e intuitiva. Obtén lo máximo en entretenimiento móvil con un reproductor de música, una cámara de 2.0 megapíxeles, la posibilidad de compartir video y Bluetooth®. Puedes ir a cualquier lugar o hacer cualquier cosa con sólo tocar la pantalla. El Vu es la combinación perfecta de diseño y tecnología que le dará una perspectiva innovadora a tu vida. Pantalla táctil grande e interactiva Televisión móvil AT&T Navegación Web HTML Reproductor de música con ecualizador personalizable Cámara de fotos con autofoco de 2.0 Megapíxeles con capacidad para video Permite compartir video Video en el celular a través de la red 3G Mensajes de correo electrónico móviles, mensajería instantánea, mensajes multimedia Capacidad Bluetooth® para transferir música, televisión y voz Puerto de memoria microSD™ bluetooth camera MEdia Net speakerphone voice memo recording compact design Video Share Music Player 3G Network Mobile TV Touch Screen micro SD Card bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card bluetooth instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card Teléfono 3G TV con pantalla táctil bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card bluetooth instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card

With the sleek and stunning Vu™ by LG, you can see the world in a whole new light — check out crystal clear TV, web, pictures, or videos on a large, intuitive touch screen. Get the utmost in mobile entertainment with a music player, 2.0 megapixel camera, video share and Bluetooth® capabilities. You can go anywhere or do anything with just a simple touch. The Vu is the perfect blend of design and technology that will give you an innovative perspective on life! Large, Interactive Touch Screen AT&T Mobile TV HTML Web Browsing Music Player with Customizable Equalizer 2.0 Megapixel Autofocus Camera with Video Video Share CV over 3G Network Mobile Email, IM, & MMS Bluetooth® Capability for Music, TV, & Voice microSD™ Memory Port bluetooth camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Video Share Music Player 3G Network Mirror LCD Mobile TV Touch Screen micro SD Card bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card bluetooth instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card Touch Screen 3G TV Phone bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card bluetooth mobile email instant messaging camera email & messaging MEdia Net speakerphone text messaging voice memo recording compact design Cingular Video Push to Talk Video Share Music Player 3G Network Mirror LCD Steel Body Mobile TV Touch Screen micro SD Card

CU920 Alguna de los contenidos de este manual puede tener variaciones con el telefono dependiendo del software o de proveedor de servicio. © 2008 AT&T Knowledge Ventures. Las empresas subsidiarias y afiliadas de AT&T Inc. proporcio- nan productos y servicios utilizando la marca de AT&T. Guía del usuario

- 3 - 1. INTRODUCTION .............................. 5 1.1 Purpose................................................... 5 1.2 Regulatory Information............................ 5 2. PERFORMANCE...............................7 2.1 System Overview.....................................7 2.2 Usable environment.................................8 2.3 Radio Performance..................................9 2.4 Current Consumption.............................16 2.5 RSSI BAR ..............................................16 2.6 Battery BAR ...........................................17 2.7 Charging ................................................17 2.8 Sound Pressure Level............................18 3. TECHNICAL BRIEF ........................19 3.1 General Description ...............................19 3.2 GSM Mode.............................................21 3.3 UMTS Mode...........................................25 3.4 LO generation and distribution circuits...28 3.5 Off-chip RF Components .......................29 3.6 Digital Baseband (MSM6281)................46 3.7. Subsystem(MSM6281) .........................48 3.8 Power Block...........................................57 3.9 External memory interface.....................62 3.10 H/W Sub System..................................64 3.11 MAIN Features.....................................80 4. TROUBLE SHOOTING ...................85 4.1 RF Component.......................................85 4.2 Component Description .........................88 4.3 WCDMA RF Signal Path........................89 4.4 GSM RF Signal Path..............................90 4.5 Checking VCTCXO Block ......................91 4.6 Checking Front-End Module Block ........94 4.7 Checking WCDMA Block .......................96 4.8 Checking GSM Block...........................101 4.9 Checking Bluetooth Block....................107 4.10 Power ON Troubleshooting................110 4.11 Charger Troubleshooting ...................112 4.12 USB Troubleshooting.........................115 4.13 USIM Detect Troubleshooting............117 4.14 Camera Troubleshooting ...................119 4.15 Keypad Backlight Troubleshooting ....121 4.16 LCD Troubleshooting.........................122 4.17 Receiver Path ....................................123 4.18 Headset path......................................125 4.19 Speaker phone path...........................127 4.20 Main microphone ...............................129 4.21 Headset microphone..........................131 4.22 Vibrator ..............................................133 4.23 Checking Media FLO Block ...............134 5. DOWNLOAD .................................138 5.1 Introduction ..........................................138 5.2 Downloading Procedure.......................138 5.3 Troubleshooting download errors ........152 5.4 Caution.................................................159 6. BLOCK DIAGRAM........................160 7. Circuit Diagram ............................171 8. BGM Pin Map................................181 9. PCB LAYOUT................................183 10. Calibration & RF Auto Test Program (Hot Kimchi)................187 10.1 Configuration of HOT KIMCHI ...........187 10.2 How to use HOT KIMCHI...................188 11. EXPLODED VIEW & REPLACEMENT PART LIST ..... 191 11.1 EXPLODED VIEW ............................ 191 11.2 Replacement Parts .................... 193

........................... 195 11.3 Accessory ......................................... 212 Table Of Contents LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

CU920 Some of the contents in this manual may differ from your phone depending on the software of the phone or your service provider. © 2008 AT&T Knowledge Ventures. All rights reserved. Subsidiaries and affiliates of AT&T Inc. pro- vide products and services under the AT&T brand. User Guide

VU User Guide