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LG CU920 Manual

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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
3.5 Off-chip RF Components .......................29
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
4.7 Checking WCDMA Block .......................96
4.8 Checking GSM Block ...........................101
4.9 Checking Bluetooth Block ....................107
4.11 Charger Troubleshooting ...................112
4.12 USB Troubleshooting.........................115
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

Table Of Contents

- 3 -
4.14 Camera Troubleshooting ...................119
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
5. DOWNLOAD .................................138
5.1 Introduction ..........................................138
5.2 Downloading Procedure.......................138
5.4 Caution.................................................159
6. BLOCK DIAGRAM ........................160
7. Circuit Diagram ............................171
8. BGM Pin Map................................181
9. PCB LAYOUT ................................183
Program (Hot Kimchi)................187
10.2 How to use HOT KIMCHI...................188
11.1 EXPLODED VIEW ............................ 191
<Mechanic component>.................... 193
<Main component> ........................... 195
11.3 Accessory ......................................... 212
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  • Page 1: Table Of Contents

    4.9 Checking Bluetooth Block ....107 11.3 Accessory ......... 212 4.10 Power ON Troubleshooting....110 4.11 Charger Troubleshooting ....112 4.12 USB Troubleshooting......115 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 3 - Only for training and service purposes...
  • Page 2 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 4 - Only for training and service purposes...

  • Page 3: 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 © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 5 -...
  • Page 4 • When returning system boards or parts like EEPROM to the factory, use the protective package as described. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 6 - Only for training and service purposes...

  • Page 5: Performance

    Yes (18 pin) Connectivity Bluetooth, USB Volume Key Push Type (+, -) External Memory I/O Connect 18 Pin Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 7 - Only for training and service purposes...

  • Page 6: Usable Environment

    Humidity 85% (Max) 2) Environment (Accessory) Reference Spec. Typ. Unit TA Power Available power * CLA : 12~24V(DC). LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 8 - Only for training and service purposes...

  • Page 7: Radio Performance

    -47dBm * In case of DCS : [A] -> 1710, [B] -> 1785* In case of PCS : [A] -> 1850, [B] -> 1910 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 9 -...
  • Page 8 * In case of DCS : [A] -> 1710, [B] -> 1785* In case of PCS : [A] -> 1850, [B] -> 1910 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 10 - Only for training and service purposes...
  • Page 9 ±4 ±3 ±4 ±5 ±4 ±5 ±4 ±5 ±4 ±5 ±5 ±5 Burst timing Mask IN Mask IN Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 11 - Only for training and service purposes...
  • Page 10 Occupied Bandwidth(OBW) 5MHz(99%) Spectrum emission Mask -35-15*(∆f-2.5)dBc@∆f=2.5~3.5MHz,30k -35-1*(∆f-3.5)dBc@∆f=3.5~7.5MHz,1M -39- 10*(∆f-7.5)dBc@∆f=7.5~8.5MHz,1M -49dBc@∆f=8.5~12.5MHz,1M Adjacent Channel Leakage Ratio(ACLR) 33dB@5MHz, ACP>-50dBm 43dB@10MHz, ACP>-50dBm LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 12 - Only for training and service purposes...
  • Page 11 -31dBc@5MHz,Interferer -40dBc - 41dBc@10MHz, Interferer -40dBc Error Vector Magnitude (EVM) 17.5%(>-20dBm) (@12.2K, 1DPDCH+1DPCCH) Transmit OFF Power -15dB@SF=4.768Kbps, Multi-code -15dB@SF=4.768Kbps, Multi-code Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 13 - Only for training and service purposes...
  • Page 12 Wanted Signal :-101dBm Wanted Signal :-101dBm Wanted Signal :-101dBm Unwanted : Depend on Unwanted : Depend on Frequency Frequency LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 14 - Only for training and service purposes...
  • Page 13 60dBm@f=1850 MHz ≤ f ≤ 1910 MHz, 3.84M BW -60dBm@f=824 MHz ≤ f ≤ 849 MHz, 3.84M BW Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 15 - Only for training and service purposes...

  • Page 14: Current Consumption

    -100 ± 2 dBm -102 ± 2 dBm BAR 1 → 0 -103 ± 2 dBm -107 ± 2 dBm LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 16 - Only for training and service purposes...

  • Page 15: Battery Bar

    • Charging Time : Max 2.5 hours (except for trickle charging time) • Full charging indication current (charging icon stop current) : 60 mA • Cut-off voltage : 3.20 V Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 17 -...

  • Page 16: Sound Pressure Level

    MS/Headset SLR : 8 ± 3dB MS/Headset RLR : -15 ± 3dB/-12dB MS/Headset RLR : -15 ± 3dB/-12dB LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 18 - Only for training and service purposes...

  • Page 17: Technical Brief

    MBD1000 RBR1000 Fig. 3.1 Block diagram of RF part A generic, high-level functional block diagram of CU920/CU915 is shown in Figure 3-1. One antenna collects base station forward link signals and radiates handset reverse link signals. The antenna connects with [1] QUALCOMM’s branded chipset that implements a Zero-IF radio architecture.
  • Page 18 2. The amplitude-modulated (AM) component is applied to the ramping control pin of Polar power amplifier from a DAC within the MSM CU920/CU915 power supply voltages are managed and regulated by the PM6650 Power Management IC. This versatile device integrates all wireless handset power management, general housekeeping, and user interface support functions into a single mixed signal IC.

  • Page 19: 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 CU920/CU915, 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-...
  • Page 20 DC offset corrections. The filter outputs are buffered and passed on to the MSM6281 IC for further processing (an interface shared with the RFR6275 UMTS receiver outputs) LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 22 - Only for training and service purposes...
  • Page 21 3. TECHNICAL BRIEF Fig. 3.2.1 RTR6275 RX feature Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 23 - Only for training and service purposes...
  • Page 22 PA and appear in the GSM Rx band LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 24 - Only for training and service purposes...

  • Page 23: 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. LGE Internal Use Only...
  • Page 24 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 © 2008 LG Electronics. Inc. All right reserved. - 26 - Only for training and service purposes...
  • Page 25 3. TECHNICAL BRIEF Figure. 3.3.2 RTR6275 IC functional block diagram Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 27 - Only for training and service purposes...

  • Page 26: Lo Generation And Distribution Circuits

    RTR6275 has the advantages of more flexible loop bandwidth control, fast lock time, and low-integrated phase error LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 28 - Only for training and service purposes...

  • Page 27: Off-Chip Rf Components

    UMTS1 1.8-3.0V 0-0.2V 1.8-3.0V 0-0.2V 2.4-3.0V UMTS2 1.8-3.0V 0-0.2V 1.8-3.0V 1.8-3.0V 2.4-3.0V Idle 0-0.2V 0-0.2V 0-0.2V 0-0.2V 0-0.2V Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 29 - Only for training and service purposes...
  • Page 28 ■ Insertion loss . this component is also in the receive and transmit paths ; In the CU920/CU915 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 29 DAC or DC-DC converter Figure. 3.5.3 WCDMA Dual PAM Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 31 - Only for training and service purposes...
  • Page 30 3. TECHNICAL BRIEF LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 32 - Only for training and service purposes...
  • Page 31 3. TECHNICAL BRIEF Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 33 - Only for training and service purposes...
  • Page 32 - Control drivers for two external pass transistors and one external battery MOSFET - MOSFET is optional - Voltage, current, and power control loops - Automated recovery from sudden momentary power loss LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 34 - Only for training and service purposes...
  • Page 33 - Vibration motor driver programmable from 1.2 to 3.1V in 100 mV increments - Speaker driver with programmable gain, turn-on time, and muting; differential operation (drives external 8 Ω speakers with volume controlled 500 mW) Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 35 -...
  • Page 34 ■ Highly integrated functionality in a small package - 84-pin BCCS with a large center slug for electrical ground, mechanical stability, and thermal relief Figure. 3.5.5.1 MSM6281 Interface LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 36 - Only for training and service purposes...
  • Page 35 Translator Interfaces RUIM_M_IO (MPP11) RUIM_IO (MPP12) SPKR_IN_P SPKR_OUT_P GND_SLUG Center Slug SPKR_IN_M SPKR_OUT_M Figure. 3.5.5.2 PM6650 Block Diagram Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 37 - Only for training and service purposes...
  • Page 36 R121 GSM_PA_BAND R122 GSM_SAW_SW_MODE EGSM C143 GSM850 HIGH remain LOW when not transmitting Figure. 3.5.6 GSM PAM Schematic LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 38 - Only for training and service purposes...
  • Page 37 - Other frequencies of particular concern . bands known to include other wireless transmitters that may deliver significant power levels to the receiver input. Figure. 3.5.7 WCDMA Rx SAW Filter Specification Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 39 -...
  • Page 38 RF module and Antenna. Figure 3-5-8 shows the bluetooth system architecture in the CU920/CU915. MSM6281 Bluetooth baseband Figure. 3.5.8 Bluetooth system architecture LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 40 - Only for training and service purposes...
  • Page 39 3. TECHNICAL BRIEF 3.5.9 Media FLO (The Media FLO function is for CU920) The Media FLO system is an end-to-end solution that enables multicasting of high-quality video, audio, clipcast media, and IP datacasting. The MediaFLO system uses forward link-only(FLO™)technology_a new air interface designed to increase capacity and reduce the costs of content delivery to mobile devices.
  • Page 40 The RBR1000’s high level of integration simplifies handset designs while saving DC power and board space CU920 uses only LNA1_INPUT(channel 55 and main frequency 719Mhz) Figure. 3.5.9.1.1 RBR1000 functional block diagram only CU920 LGE Internal Use Only Copyright ©...
  • Page 41 IC. Two dedicated digital inputs (RF_ON and TCXO_ON) from the MBD device supplements SSBI control of the RFIC. Figure. 3.5.9.1.2 RBR1000 pin assignment (top view) only CU920 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 43 - Only for training and service purposes...
  • Page 42 Overall receiver performance depends upon the combined, complementary performance of both ICs. Figure. 3.5.9.2.1 MBD1000 functional block diagram only CU920 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 44 - Only for training and service purposes...
  • Page 43 The digitized signal also forms the input to the FLO demodulator circuits. Figure. 3.5.9.2.2 RBR1000 pin assignment (top view) only CU920 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 45 - Only for training and service purposes...

  • Page 44: Digital Baseband (Msm6281)

    ■ 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 © 2008 LG Electronics. Inc. All right reserved. - 46 - Only for training and service purposes...
  • Page 45 MP3, AAC, Rx ADC EVRC, QCELP AMR, CMX, MIDI Tx DAC USIM PM6650- Figure. Simplified Block Diagram of MSM6281 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 47 - Only for training and service purposes...

  • Page 46: Subsystem(Msm6281)

    ■ 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 © 2008 LG Electronics. Inc. All right reserved. - 48 - Only for training and service purposes...
  • Page 47 ❏ 14.4k ❏ Fax ❏ Transparent and non-transparent modes for CS data and fax ❏ No sub-rates are supported. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 49 - Only for training and service purposes...
  • Page 48 ■ 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 © 2008 LG Electronics. Inc. All right reserved. - 50 - Only for training and service purposes...
  • Page 49 ■ 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 © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 51 - Only for training and service purposes...
  • Page 50 ■ Video Codecs supported: MPEG-4, H.263.H.264 ■ Audio Codecs supported: AMR-NB, AAC ■ Recording performance: 15 fps @ QVGA, 384 kbps LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 52 - Only for training and service purposes...
  • Page 51 ■ Scalable Vector Graphics (SVG- Tiny 1.1 + SVG Tiny 1.2) ■ MLZ decoder ■ Integrated PNG/SAF A.T. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 53 - Only for training and service purposes...
  • Page 52 3. TECHNICAL BRIEF Table. 3.7 Summary of MSM6280 device features LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 54 - Only for training and service purposes...
  • Page 53 LCD, RAM, ROM, and EEPROM devices. Through a generic single serial bus interface (SSBI) the ARM926EJ-S configures and controls the functionality of the RFR6275, RTR6275, and PM6650 devices. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 55 -...
  • Page 54 The USB controller acts as a USB peripheral communicating with the USB host. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 56 - Only for training and service purposes...

  • Page 55: 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. LGE Internal Use Only - 57 -...
  • Page 56 3. TECHNICAL BRIEF Figure. 3.8.2 PM6650 Functional Block Diagram LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 58 - Only for training and service purposes...
  • Page 57 3.76V~3.67V 3.66V~3.59V 3.58V~3.28 4.2V~3.77V 69~45 (%) 44~20 (%) 19~0 (%) 100~70 (%) CU920 Battery Bar Display(Stand By Condition) Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 59 - Only for training and service purposes...
  • Page 58 VDD to pin (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 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 60 - Only for training and service purposes...
  • Page 59 • Low battery POP UP : Idle - 3.55V, Dedicated(GSM/WCDMA) - 3.54V • Low battery alarm interval : Idle - 3 min, Dedicated - 1min • Cut-off voltage : 3.28V Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 61 -...

  • Page 60: External Memory Interface

    EBI2 was targeted towards supporting slower asynchronous devices such as LCD, NAND flash, SRAM, etc. In addition, MSM6281 provide SD bus interface. CU920/CU915 supports Micro-SD using SD interface. • EBI1 Features - 16 bit static and dynamic memory interface...
  • Page 61 SDCC_DATA[3: 0] Extern al Memor y SDCC_CMD Micro SD card SDCC_CLK Figure. Simplified Block Diagram of Memory Interface Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 63 - Only for training and service purposes...

  • Page 62: H/W Sub System

    • 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 © 2008 LG Electronics. Inc. All right reserved. - 64 - Only for training and service purposes...
  • Page 63 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 MSM6281 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 65 - Only for training and service purposes...
  • Page 64 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 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 66 - Only for training and service purposes...
  • Page 65 USB_SE0 USB_SE0 USB_D- USB_D_M GP1_DRV_N(MPP7) R707 C723 2.2u 1608 Figure. Schematic of USB block(MSM6281 Side & PM6650 Side) Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 67 - Only for training and service purposes...
  • Page 66 REMOTE_ADC Do not use HKADC4 PCB_Rev_ADC PCB Version Check HKADC5 Battery_THERM Battery Temperature Check Table. HKADC channel table LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 68 - Only for training and service purposes...
  • Page 67 ROW(3) Table. Key Matrix Mapping Table KEY(Side Volume Up/Down, OK, Send, Clear, Zoom, In/shutter) Figure. Main Keypad Circuit Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 69 - Only for training and service purposes...
  • Page 68 CAM_MCLK 0.1u 0.1u INOUT_A3 INOUT_B3 INOUT_A2 INOUT_B2 CAM_VSYNC INOUT_A1 INOUT_B1 CAM_HSYNC FL508 ICVE10184E070R101FR Figure. Camera to Board Connector LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 70 - Only for training and service purposes...
  • Page 69 Table. Interface between MEGA VREG_CAM_1.8V VDDD 1.5v Camera Module and MAIN PCB VREG_CAM_1.8V VDDD 1.5v (in camera module) Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 71 - Only for training and service purposes...
  • Page 70 There are 2 White LEDs in Main key backlight circuit, which are driven by LED_CON line from PM6650 pin23 (KPD_DRV_N). Figure. Schematic of KEY back light circuit (KEY side ) LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 72 - Only for training and service purposes...
  • Page 71 LCD_RESET_N EBI2_WE_N LCD 3.0" LCD_ADS MSM6281 TFT(WQVGA) EBI2_DATA[ 15:0] LCD_CS_N WLED_PWR Charge pump Figure. LCD Module Block Diagram Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 73 - Only for training and service purposes...
  • Page 72 INOUT_B3 EBI2_OE_N EBI2_DATA(12) INOUT_A1 INOUT_B1 INOUT_A4 INOUT_B4 EBI2_WE_N EBI2_DATA(13) INOUT_A2 INOUT_B2 EBI2_DATA(14) INOUT_A3 INOUT_B3 EBI2_DATA(15) INOUT_A4 INOUT_B4 LCD_VSYNC LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 74 - Only for training and service purposes...
  • Page 73 Au di o DSP 2.30 mW max.* AUXOP / Line_L Code c Rx AUXON / Line_R Figure. Audio Interface Detailed Diagram(MSM6281) Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 75 - Only for training and service purposes...
  • Page 74 (CODEC VSS) SDCC_DAT1_GPIO99 SDCC_DATA(1) SDCC_DAT2_GPIO100 SDCC_DATA(2) SDCC_DAT3_GPIO101 SDCC_DATA(3) MDP_VSYNC_SECONDA_GPIO104 LCD_MAKER_ID MDP_VSYNC_PRIMARY_GPIO105 LCD_VSYNC WDOG_STB_SBCK1_GPIO0 SBDT1_GPIO1 Figure. Audio part schematics LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 76 - Only for training and service purposes...
  • Page 75 3. TECHNICAL BRIEF TTY DETECT EAR_MIC2P MIC2P 0.1u MICBIAS C801 2.2K R800 TTY_ADC_DET Figure. Audio part schematics Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 77 - Only for training and service purposes...
  • Page 76 SPK_SW_ON CN801 EAR_MIC2P R801 HPL_L R802 C803 100ohm HPL_R C804 100ohm USB_D+ USB_D- EAR_SENSE_N Figure. Audio part schematics LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 78 - Only for training and service purposes...
  • Page 77 Speaker/Receiver EMS1813VCD2P 8 ohm Speaker MIC101 SP0204LE5-PB -42 dB microphone Ear jack 18PIN Table. Audio main component list Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 79 - Only for training and service purposes...

  • Page 78: 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 Copyright © 2008 LG Electronics. Inc. All right reserved. - 80 - Only for training and service purposes...
  • Page 79 3. TECHNICAL BRIEF 3.11.2 CU920/CU915 Main Components Main board, Top Main board, Bottom Logic/Audio Media_FLO Bluetooth SUB-PCB (Bottom) SUB-PCB (Top) Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 81 - Only for training and service purposes...
  • Page 80 Reference Description U100 RTR6275 U106 RFR6275 U101 GSM PAM U105 WCDMA PAM X100 TCXO U901 MBD1000 U900 RBR1000 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 82 - Only for training and service purposes...
  • Page 81 2G NAND_1G SD Memory Main board, Top Reference Description U200 MSM6281 U302 Memory U701 PMIC U301 U300 Analog switch Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 83 - Only for training and service purposes...
  • Page 82 3. TECHNICAL BRIEF Logic ChargePump Touch IC Bluetooth Reference Description U103 Charge Pump U101 Bluetooth U104 Touch IC LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 84 - Only for training and service purposes...

  • Page 83: Trouble Shooting

    4. TROUBLE SHOOTING 4. TROUBLE SHOOTING 4.1 RF Component Fig. 4.1.1 MAIN PCB BOTTOM SIDE Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 85 - Only for training and service purposes...
  • Page 84 4. TROUBLE SHOOTING Fig. 4.1.2 MAIN PCB TOP SIDE LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 86 - Only for training and service purposes...
  • Page 85 4. TROUBLE SHOOTING Fig. 4.1.1 SUB PCB BOTTOM SIDE Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 87 - Only for training and service purposes...

  • Page 86: Component Description

    SAFEB1 G96FL0F00 W1900 RX SAW filter U101 SKY77329 GSM TX Dual PAM G850/900 Dual TX SAW FL101 LMSM32AA-533 Filter LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 88 - Only for training and service purposes...

  • Page 87: Wcdma Rf Signal Path

    W CD MA 1 M A 1 900 900 Ban Band : IQ I Q Sig n Si gn al Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 89 - Only for training and service purposes...

  • Page 88: Gsm Rf Signal Path

    : GSM GSM Hig Hi g h Ba h Band : IQ I Q Sig n Si gn al LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 90 - Only for training and service purposes...

  • Page 89: Checking Vctcxo Block

    1000p RFR6275_TCXO C166 100p RBR1000_TCXO TCXO_BT Fig. 4.5.1 Schematic of the TCXO Block Fig, 4.5.2 VCTCXO 19.2MHz Wave Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 91 - Only for training and service purposes...
  • Page 90 4. TROUBLE SHOOTING Fig. 4.5.3 Test Point of the TCXO Block LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 92 - Only for training and service purposes...
  • Page 91 2V ≥ Voltage ≥ 1V and components CXO is OK Check other part Fig. 4.5.4 Test Point of the TCXO Block Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 93 - Only for training and service purposes...

  • Page 92: Checking Front-End Module Block

    ANT_SEL ANT_SEL 1 ANT_SEL ANT_SEL 2 ANT_SEL ANT_SEL 3 Fig. 4.6.2 Test Point of the Front-End Module Block LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 94 - Only for training and service purposes...
  • Page 93 1.8V < Voltage < 3.0V TPI VREG_RF_2.85V Check the Logic in each mode Fig. 4.6.4 Check Flow of the FEM Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 95 - Only for training and service purposes...

  • Page 94: Checking Wcdma Block

    3.9nH WCDMA_1900_TX_OUT L903 C165 4.7nH PA_ON2 C167 L135 C168 0.01u Fig 4.7.1.2 Schematic of the WCDMA TX Block LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 96 - Only for training and service purposes...
  • Page 95 Check P AM bl ock Over 22dBm? Tx is OK Check other parts Fig. 4.7.1.3 Check Flow of the WCDMA TX Block Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 97 - Only for training and service purposes...
  • Page 96 W1900 Coupler + VPWR PA_ON2: W1900 Enable (Check C168) Fig. 4.7.2.1 Test point of the WCDMA PAM Block LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 98 - Only for training and service purposes...
  • Page 97 L904 100p GND3 GND4 3.3nH RX_WCDMA_1900 B7637 R124 L903 4.7nH Fig. 4.7.3.2 Schematic of the WCDMA RX Block Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 99 - Only for training and service purposes...
  • Page 98 IQ signal Signal exist? Rx is OK Check other Parts Fig. 4.7.3.3 Check Flow of the WCDMA RX Block LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 100 - Only for training and service purposes...

  • Page 99: Checking Gsm Block

    GSM_SAW_SW_MODE EGSM C143 GSM850 HIGH remain LOW when not transmitting Fig. 4.8.1.2 Schematic of the GSM TX Block Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 101 - Only for training and service purposes...
  • Page 100 Problems resolved? G850/900/DCS/PCS Tx is OK. Change the Board Fig. 4.8.1.3 Check Flow of the GSM TX Block LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 102 - Only for training and service purposes...
  • Page 101 GSM_SAW_SW_MODE EGSM C143 GSM850 HIGH remain LOW when not transmitting Fig. 4.8.2.2 Schematic of the GSM PAM Block Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 103 - Only for training and service purposes...
  • Page 102 L116 27nH L118 22nH L119 L120 47nH 18nH L121 22nH Fig. 4.8.3.2 Schematic of the GSM RX Block LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 104 - Only for training and service purposes...
  • Page 103 Rx still has problems? G850/900/DCS/PCS Rx is OK. Re-download & Calibration Fig. 4.8.3.3 Check Flow of the GSM RX Block Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 105 - Only for training and service purposes...
  • Page 104 4. TROUBLE SHOOTING RTR6275 Tx_QP Wave RFR6275 Rx_QP Wave LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 106 - Only for training and service purposes...

  • Page 105: Checking Bluetooth Block

    C104 1000p C108 2.2u C107 100p C109 C110 0.1uF 100p VREG_MSMP_2.8V Fig. 4.9.2 Schematic of the Bluetooth Block Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 107 - Only for training and service purposes...
  • Page 106 4. TROUBLE SHOOTING [TP3] TCXO_BT Wave [TP5] BT_CLK Wave LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 108 - Only for training and service purposes...
  • Page 107 Sig nals ex its? Chang e th e Main bo ard Fig. 4.9.3 Check Flow of the Bluetooth Block Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 109 - Only for training and service purposes...

  • Page 108: Power On Troubleshooting

    Ch eck the TXCO X700 : 32 .76 8K h z YE S Change the Main boar d LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 110 - Only for training and service purposes...
  • Page 109 TCXO-IN X700 : 32.768Khz : 19.2Mhz VREG_MSMP (C160) VREG_MSME PM6650IC VREG_MSMC PS_HOLD MAIN Bottom (near PM6650IC) VREG_TCXO_2.85V (C175) Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 111 - Only for training and service purposes...

  • Page 110: Charger Troubleshooting

    - Check the charging current Path - Connection of TA or USB Cable - Check the battery - Charging current path - Battery LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 112 - Only for training and service purposes...
  • Page 111 Is it chargi ng properly After turn ing on U700 ? Chan ge the board Charger Troubleshooting Flow Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 113 - Only for training and service purposes...
  • Page 112 CHG_CNT_N USB_VBUS EMITTER2 BASE2 USB_CTL_N ICHARGE COLLECTOR GATE BATT_FET_N R700 SOURCE DRAIN VBATT ICHARGEOUT +VPWR Charging part schematics LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 114 - Only for training and service purposes...

  • Page 113: Usb Troubleshooting

    4.12 USB Troubleshooting USB Initial sequence is : USB connected to CU920 power on → USB_VBUS(U700) go to 5V → USB_D+ go to 3.3V → USB_VP and USB_VN is triggered → USB work. Start Go to po wer on trouble shooting...
  • Page 114 CHG_CNT_N USB_VBUS EMITTER2 BASE2 USB_CTL_N ICHARGE COLLECTOR GATE BATT_FET_N R700 SOURCE DRAIN VBATT ICHARGEOUT +VPWR USB part Schematics LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 116 - Only for training and service purposes...

  • Page 115: Usim Detect Troubleshooting

    Check J10 0 USIM_P_CLK is run? Change SIM car d Work w ell? Chang e th e Main bo ard Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 117 - Only for training and service purposes...
  • Page 116 VREG_USIM_2.85V USIM_P_RST_N USIM_P_CLK USIM_P_DATA R102 J100 VREG_USIM_2.85V USIM_P_RST_N USIM_P_DATA USIM_P_CLK GND2 GND1 C114 Figure . USIM part schemetics LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 118 - Only for training and service purposes...

  • Page 117: Camera Troubleshooting

    Chang e th e Main bo ard (FL508 pi n6) Chan ge the camera Camera is OK Chang e th e Main bo ard Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 119 - Only for training and service purposes...
  • Page 118 4. TROUBLE SHOOTING FL508 C509 C506 MAIN Top (near camera connector) LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 120 - Only for training and service purposes...

  • Page 119: Keypad Backlight Troubleshooting

    ? Chang e th e Main bo ard KEY LED LED_CON Figure. Side key FPCB backlight LED part Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 121 - Only for training and service purposes...

  • Page 120: Lcd Troubleshooting

    LCD di spl ay OK? Change th e Main board LCD di spl ay OK? Chang e th e LCD FPCB LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 122 - Only for training and service purposes...

  • Page 121: Receiver Path

    The sin e wave appears at Check th e analog switch R300, R301? Change the Main boa rd Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 123 - Only for training and service purposes...
  • Page 122 4. TROUBLE SHOOTING SPK600, SPK601 Analog Switch R300, R301 CU920 MAIN Top LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 124 - Only for training and service purposes...

  • Page 123: Headset Path

    Can y ou he ar the tone ? Sin e wave appears at Change th e Headset R802, R801? Change the Main boa rd Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 125 - Only for training and service purposes...
  • Page 124 (near MMI connector) ] (near MMI connector) [ CU920 MAIN Bottom MAIN Bottom (near MMI connector) ] (near MMI connector) LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 126 - Only for training and service purposes...

  • Page 125: Speaker Phone Path

    The sin e wave appears at Change th e sp eaker SPK600, SPK 601? Change the Main boa rd Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 127 - Only for training and service purposes...
  • Page 126 4. TROUBLE SHOOTING SPK600, SPK601 R306, R307 [ CU920 MAIN Top] R308 MAIN Top Analog Switch LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 128 - Only for training and service purposes...

  • Page 127: Main Microphone

    Make sound t o MIC Sin e wave appears at Change the MIC C936? Change the Main boa rd Work w ell? Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 129 - Only for training and service purposes...
  • Page 128 4. TROUBLE SHOOTING C937 C936 [ CU920 MAIN Top (near sidekey FPCB connector) ] MAIN Top (near sidekey FPCB connector) CN600 +VPWR LED_CON MICBIAS C936 0.1u MIC1P C937 C600 VA607 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.

  • Page 129: Headset Microphone

    Sin e wave appears at Main boa rd a nd re try . C801? Change the Main boa rd Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 131 - Only for training and service purposes...
  • Page 130 4. TROUBLE SHOOTING D802 C801 FB800 [ CU920 MAIN Top (near MMI connector) ] MAIN Top (near MMI connector) CN801 [ CU920 MAIN Bottom (near MMI connector) ] MAIN Bottom (near MMI connector) LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.

  • Page 131: Vibrator

    PMIC/Mainbo ard ground ? Change vibra tor L801 L800 [ CU920 MAIN Bottom (near Vibrator connector) ] MAIN Bottom (near Vibrator connector) Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 133 - Only for training and service purposes...

  • Page 132: Checking Media Flo Block

    BOTTOM Media FLO ANT coaxtial cable MBD1000 RBR1000 Media FLO Block Media FLO ANTENNA FEEDING CONTACT only CU920 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 134 - Only for training and service purposes...
  • Page 133 C927 0.1u 0.1u 0.1u FLO_SSBI RESOUT_EBI2_N RF_ON MBD_RX_IP MBD_RX_IM MBD_RX_QP MBD_RX_QM Media FLO MBD1000 Circuit diagram only CU920 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 135 - Only for training and service purposes...
  • Page 134 CHECK M_FLO RF PATH C935 CONNECT SEMIRIGID CABLE Next page Continued CU920 MEDIA FLO CHECKING FLOW only CU920 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 136 - Only for training and service purposes...
  • Page 135 CHECK C909 CHANGE RBR1000 VCO WAVEFORM IS normal RBR1000 NORMAL? SOFT REDOWNLOAD AND CHANGE BOARD only CU920 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 137 - Only for training and service purposes...

  • Page 136: Download

    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. Additionally, LGMDP allows multi downloading up to 8 handsets at the same time.
  • Page 137 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 © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 139 -...
  • Page 138 PC to the handset, a progressive bar (Red box) indicating the degree of transmission of data is displayed. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 140 - Only for training and service purposes...
  • Page 139 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 © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only...
  • Page 140 6) Clear: Clearing all directory paths of images in the dialog. 7) Start: Starting downloading the selected individual image. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 142 - Only for training and service purposes...
  • Page 141 (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 © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 143 -...
  • Page 142 5. DOWNLOAD ★ if you select the image folder, the program will automatically load images accordingly. Automatically load images LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 144 - Only for training and service purposes...
  • Page 143 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 © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 145 -...
  • Page 144 BL and Q QCSBL Reset Download OE load OE MSBL Download End Download MODE load MODEM Reset <Download process> LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 146 - Only for training and service purposes...
  • Page 145 • Erasing the existing directories and files before the Module image is downloaded. • Downloading the AMSS modem image Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 147 - Only for training and service purposes...
  • Page 146 • Erasing the existing directories and files before downloading the selected Media image • Downloading Media image in progress LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 148 - Only for training and service purposes...
  • Page 147 5. DOWNLOAD • Downloading Module image in progress • Downloading process has completed successfully Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 149 - Only for training and service purposes...
  • Page 148 USB connectivity and check where the COM has been installed . Select Device Manager from the Tools of the file menu. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 150 - Only for training and service purposes...
  • Page 149 Debugging_Tip.txt, or Hidden_info.bin are placed on the handset. If they are exist, then appropriate check boxes are checked accordingly. Select directory to store log files by clicking on the ... button. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 151 -...

  • Page 150: Troubleshooting Download Errors

    (AMSS Modem, Media and Module Images don’t be running in this mode.) LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 152 - Only for training and service purposes...
  • Page 151 5. DOWNLOAD When you meet the “NV Restore error”, Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 153 - Only for training and service purposes...
  • Page 152 5. DOWNLOAD → Connect to the phone. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 154 - Only for training and service purposes...
  • Page 153 5. DOWNLOAD → Click on ‘Cancel’. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 155 - Only for training and service purposes...
  • Page 154 ★ The files are saved every NV Backup. The name is based on the time when NV Backup is done LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 156 - Only for training and service purposes...
  • Page 155 5. DOWNLOAD → Select the proper file and click on ‘Restore’. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 157 - Only for training and service purposes...
  • Page 156 → If you want image download and NV backup file restore at once, use the NV Default function. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 158 - Only for training and service purposes...

  • Page 157: 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 © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only...

  • Page 158: Block Diagram

    W- VCO RX_S RX_SAW 6650 Bl Blue uetooth ooth T-Fl T-Fl ash RBR1000 R1000 MBD1 MBD100 Only CU920 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 160 - Only for training and service purposes...
  • Page 159 MP3, AAC, , Rx ADC EVRC, Q , QCELP AMR, C CMX, MIDI Tx DAC PM6650 USIM MSM6280 Block Diagram Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 161 - Only for training and service purposes...
  • Page 160 QUAD PA -HB_RF_OUT2 DCS/PCS BLUETOOTH RF MODULE BLUETOOTH RF TCXO BT_SBST/CK/DT BT_SBST/CK/DT BT_RX_TX_N BT_RX_TX_N BT_DATA BT_DATA RF Block Diagram LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 162 - Only for training and service purposes...
  • Page 161 RESOUT_EBI2_N SLEEP_CLK EBI2_OE_N MSM6281 TCXO_MSM EBI2_WE_N VREG_MSME_1.8V MEMORY SDRAM_DATA(0: 31) SDRAM_ADDR(0:12) Media FLO Block Diagram(Only CU920) only CU920 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 163 - Only for training and service purposes...
  • Page 162 DATA[7: 0] DQM[3:0] TFLASH_CM D SIM_RESET TFLASH_DATA SIM_IO TFLASH USIM TFLASH_CL K SIM_CLK TFLASH_DE CT_N PMIC Memory interface LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 164 - Only for training and service purposes...
  • Page 163 CAM_PCLK Camera TFT(WQVGA) EBI2_DATA[ 15:0] VREG_CAM_ACT CAM_VSYNC CAM_HSYNC LCD_CS_N CAM_DATA[7: 0] WLED_PWR Charge pump Camera & LCD Interface Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 165 - Only for training and service purposes...
  • Page 164 JTAG USIM USIM UART2 UART2 TRANSCEI TRANSCEI V ER (RUIM) UART1 UART1 JTAG JTAG Interface JTAG USB/UART/SIM/JTAG interfaces LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 166 - Only for training and service purposes...
  • Page 165 VREG_TCXO (2.8 (2.8 5V/ 50m 5V/ 50m A) A) TCXO TCXO USIM USIM TFLASH TFLASH Power Block Diagram Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 167 - Only for training and service purposes...
  • Page 166 Charge Pu mp LCD_BL_ CTRL JTAG CON, UART,USB USB_D+,D-,VBUS TRST_N, TCK, TMS, TDI, TDO, RTCK JTAG Peripheral Block Diagram LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 168 - Only for training and service purposes...
  • Page 167 MMI) MIC2P MICBIAS MIC1P 6. 6.15 15x3.16, 16, 1.25T MIC1N -42dB -42dB +/ -3dB -3dB Audio Block Diagram Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 169 - Only for training and service purposes...
  • Page 168 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 170 - Only for training and service purposes...

  • Page 169: Circuit Diagram

    C188 C189 VDDA11 120p VREG_MSMP_2.8V VDDM1 VDDA12 R131 C190 VDDM2 VDDA13 R132 100p VDDA14 C191 C192 RFR6275 C193 - 171 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 170 MDDIC_STBN MEDIAFLO_SET C241 Place near 0.1u MSM pin AD26 R209 2.2K R210 2.2K VREG_CAM_IO_2.8V (Check CAM_DATA PINOUT !!!!) - 172 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 171 NC13 NC74 NC14 NC75 NC15 NC76 NC16 NC77 NC17 NC78 NC18 NC79 NC19 NC80 NC20 NC81 NC21 NC82 - 173 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 172 BT_TX_RX_N CAM_LDO_EN BT_SBST VREG_CAM_2.8V BT_SBCK VREG_MSMP_2.8V BT_SBDT VREG_USIM_2.85V BT_DATA VREG_CAM_1.8V VREG_BT_2.85V USIM_P_CLK USIM_P_DATA BT_CLK USIM_P_RST_N TCXO_BT OJ400 OJ401 - 174 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 173 C507 C508 C509 INOUT_A4 INOUT_B4 CAM_MCLK 0.1u 0.1u INOUT_A3 INOUT_B3 INOUT_A2 INOUT_B2 CAM_VSYNC INOUT_A1 INOUT_B1 CAM_HSYNC FL508 ICVE10184E070R101FR - 175 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 174 VA617 UART600 2.5G UART_RX UART_TX VCHAR +5V_PWR_IO ON_SW PM_ON_SW_N ON_SW VBAT VBAT VBATT USB_VBUS URXD USB_D- UTXD USB_D+ - 176 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 175 Power Line --> Route carefully!!!!! Draw the Artwork_line thickly !!!!! --->> USB_VBUS , FLASH_DRV_N , KPD_DRV_N , KEY_ON_SW_N , MOT_PWR- - 177 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 176 VBAT C810 CN802 C806 +5V_PWR_IO D802 P_GND 5V_NC DRAIN GATE CNTRL RCLAMP0504P.TCT U802 DRAIN_THERMAL +5V_PWR NUS3065MUTAG U801 NFM21PC105B1A3 - 178 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 177 VREG_MSMA_2.6V FLO_INT0 FLO_INT1 C925 C926 C927 0.1u 0.1u 0.1u FLO_SSBI RESOUT_EBI2_N RF_ON MBD_RX_IP MBD_RX_IM MBD_RX_QP MBD_RX_QM only CU920 - 179 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 178 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 - 180 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 179: Bgm Pin Map

    8. BGM Pin Map 8. BGM Pin Map NC point Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 181 - Only for training and service purposes...
  • Page 180 8. BGM Pin Map NC point LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 182 - Only for training and service purposes...

  • Page 181: Pcb Layout

    Abnormal operation MSM6281 No power on Abnormal operation No power on U302 Memory Abnormal operation No power on - 183 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 182 No use external memory CN802 Battery connector U700 No power on Charging IC No charging No Charging No power on - 184 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 183 9. PCB LAYOUT CN101 to B connector No use BT & touch, Insert SmartChip Abnormal operation - 185 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 184 USIM connector No use phone set Display “Inset SmartChip” ANT100 No use BT service Abnormal Tx,& RX power - 186 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 185: Calibration & Rf Auto Test Program (Hot Kimchi)

    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 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 187 -...

  • Page 186: How To Use Hot Kimchi

    3. Select “LOGIC MODE” that you want - Logic Mode → 1: Calibration Only 2: Auto Test Only 3: Calibration + Auto LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 188 - Only for training and service purposes...
  • Page 187 10. Calibration & RF Auto Test Program (Hot Kimchi) CU920 Click "Start" Select "CU920" * Procedure 4. Select the model name “CU920” 5. Click “Start” button Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 189 - Only for training and service purposes...
  • Page 188 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 190 - Only for training and service purposes...

  • Page 189: Exploded View & Replacement Part List

    11. EXPLODED VIEW & REPLACEMENT PART LIST 11.1 EXPLODED VIEW - 191 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 190 ASS’Y EXPLODED VIEW - 192 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 191: Replacement Parts

    CASTING, Zn Alloy, , , , , Without Color MFBC00 FILTER,SPEAKER MFBC0032201 COMPLEX, (empty), , , , , Black Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 193 - Only for training and service purposes...
  • Page 192 14 PIN,0.4 mm,ETC , ,H=1.5, Header BOARD UNIT ,-42 dB,6.15*3.76*1.25 ,Silicon mic , ,-42 ,300 MIC101 MICROPHONE SUMY0010602 ,OMNI ,[empty] ,6.15*3.76*1.25 ,SMD LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 194 - Only for training and service purposes...

  • Page 193: Main Component

    33 uF,10V ,M ,L_ESR ,2012 ,R/TP ,; , ,[empty] ,[empty] , C129 CAP,TANTAL,CHIP ECTH0005501 ,-55TO+125C , ,[empty] ,[empty] ,[empty] ,[empty] Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 195 - Only for training and service purposes...
  • Page 194 33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP C812 CAP,CERAMIC,CHIP ECCH0000110 10 pF,50V,D,NP0,TC,1005,R/TP C900 CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 196 - Only for training and service purposes...
  • Page 195 CN802 CONNECTOR,ETC ENZY0016301 3 PIN,3.0 mm,ETC , ,H-2.0 EMD2 ,30 V,1 A,R/TP ,VF=1.5V(IF=200mA) , D800 DIODE,SWITCHING EDSY0011901 IR=30uA(VR=10V) Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 197 - Only for training and service purposes...
  • Page 196 1.5 nH,S ,1005 ,R/TP , L909 INDUCTOR,CHIP ELCH0005014 5.6 nH,S ,1005 ,R/TP , L910 RES,CHIP,MAKER ERHZ0000401 0 ohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 198 - Only for training and service purposes...
  • Page 197 5600 ohm,1/16W ,J ,1005 ,R/TP R902 RES,CHIP,MAKER ERHZ0000402 10 ohm,1/16W ,J ,1005 ,R/TP R903 RES,CHIP,MAKER ERHZ0000405 10 Kohm,1/16W ,J ,1005 ,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 199 - Only for training and service purposes...
  • Page 198 5.5 V, ,SMD ,1005, 50pF VA610 VARISTOR SEVY0005201 5.5 V, ,SMD ,1005, 50pF VA611 VARISTOR SEVY0005201 5.5 V, ,SMD ,1005, 50pF LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 200 - Only for training and service purposes...
  • Page 199 ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C133 CAP,CERAMIC,CHIP ECCH0000198 2.2 uF,6.3V ,M ,X5R ,TC ,1005 ,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 201 - Only for training and service purposes...
  • Page 200 ECCH0000129 120 pF,50V,J,NP0,TC,1005,R/TP C190 CAP,CHIP,MAKER ECZH0000813 100 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP C191 CAP,CERAMIC,CHIP ECCH0000115 22 pF,50V,J,NP0,TC,1005,R/TP LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 202 - Only for training and service purposes...
  • Page 201 ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C228 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C229 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C230 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 203 - Only for training and service purposes...
  • Page 202 ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C703 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 204 - Only for training and service purposes...
  • Page 203 33 uF,10V ,M ,L_ESR ,2012 ,R/TP ,; , ,[empty] ,[empty] , C803 CAP,TANTAL,CHIP ECTH0002002 ,-55TO+125C , ,2.2X1.1X1.1MM ,[empty] ,[empty] ,[empty] Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 205 - Only for training and service purposes...
  • Page 204 1.2 nH,S ,1005 ,R/TP , L138 INDUCTOR,CHIP ELCH0001022 56 nH,J ,1005 ,R/TP ,Pb Free L139 INDUCTOR,CHIP ELCH0004711 22 nH,J ,1005 ,R/TP , LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 206 - Only for training and service purposes...
  • Page 205 215K ohm,1/16W,F,1005,R/TP R201 RES,CHIP,MAKER ERHZ0000204 100 Kohm,1/16W ,F ,1005 ,R/TP R202 RES,CHIP,MAKER ERHZ0000493 51 Kohm,1/16W ,J ,1005 ,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 207 - Only for training and service purposes...
  • Page 206 QFN ,48 PIN,R/TP ,WCDMA Dual Receiver IC for USA, U106 EUSY0300401 7X7X0.9 CSP ,409 ,R/TP ,WCDMA/GSM/GPRS/EDGE/HSDPA BB U200 EUSY0360401 to avoid IPR#686 ,; ,IC,Digital Baseband Processor LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 208 - Only for training and service purposes...
  • Page 207 ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C116 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 209 - Only for training and service purposes...
  • Page 208 PIN ,8 ohm,90 dB, mm, ,; , , , , , ,18*13*3.6T ,PIN 12 J SVCY00 CAMERA SVCY0012401 CMOS ,MEGA ,2M AF FPCB, Micron 1/4 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 210 - Only for training and service purposes...
  • Page 209 1.4 mm,3 mm,MSWR3(BK) ,N ,+ ,NYLOK Without Color MLAA00 LABEL,APPROVAL MLAA0051501 COMPLEX, (empty), , , , , White Pearl Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 211 - Only for training and service purposes...

  • Page 210: Accessory

    100-240V ,5060 Hz,5.1 V,.7 A,UL/CSA ,AC-DC SSAD0024404 ADAPTOR ,; ,85Vac~264Vac ,5.1 (+0.15V, -0.2V) ,700mA ,5060 , ,WALL 2P ,I/O CONNECTOR , LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 212 - Only for training and service purposes...
  • Page 211 Note...
  • Page 212 Note...

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