Page 1 Internal Use Only Service Manual CT815 Date: May, 2009 / Issue 1.0...
Page 2: Table Of Contents
4.3 Checking TCXO Block ......79 <Mechanic component>.....195 <Main component> ......198 4.4 Checking Front End Module(FEM)Block81 12.3 Accessory ..........221 Copyright © 2009 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 © 2009 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 © 2009 LG Electronics. Inc. All right reserved. - 6 - Only for training and service purposes...
Page 6: Performance
Speaker/Receiver 10. Bluetooth 300 mm (± 15° ) 11. WLAN IEEE 802.11b/ g Throughput 4Mbps 50 ~ 200m Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 7 - Only for training and service purposes...
Page 7: Usable Environment
-30 ~ +85°C Humidity 65 % (Max) 2) Environment (Accessory) Reference Spec. TA Power AC 110 ~ 240V, 60Hz LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 8 - Only for training and service purposes...
Page 8: Radio Performance
: -98dBm/-96dBm (2.439%) AM Suppression -98dBm/-96dBm (2.439%) -GSM : -31dBm - DCS : -29dBm Timing Advance ± 0.5T Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 9 - Only for training and service purposes...
Page 9: Only For Training And Service Purposes
< 17.5 %, when Pout ≥ -20 dBm < -15 dB at Pout ≥ -20 dBm Peak Code Domain Error LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 10 - Only for training and service purposes...
Page 10: Only For Training And Service Purposes
+1.5/4 -0.5/+0.5 -0.5/+0.5 -0.5/+0.5 Inner Loop Power Control -0.5/-1.5 -1/-3 -1.5/-4 In Uplink group(10equal command group) +8/+12 +16/+24 Copyright © 2009 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
> 33 dB @ ±5 MHz > 43 dB @ ±10 MHz Error Vector Magnitude 3GPP Not Complete LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 12 - Only for training and service purposes...
Page 12: Current Consumption
(Stand by and Voice Call Test Condition : Bluetooth off, LCD backlight off,Neighbor Cell off) (VT Test Condition : Speaker off, LCD backlight On) Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 13 -...
Page 13: Rssi Bar
Bar 3 → 2 Bar 2 → 1 Bar 1 → 0 Low Battery Alarm Critical Low Battery Alarm POWER OFF LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 14 - Only for training and service purposes...
Page 14: Technical Brief
3. TECHNICAL BRIEF 3. TECHNICAL BRIEF 3.1 GENERAL DESCRIPTION The CT815 supports UMTS-850(Band V), UMTS-1900(Band I), UMTS-2100(Band I), GSM-850, GSM- 900, GSM-1800, and GSM-1900 based GSM/GPRS/EDGE/UMTS. All receivers and the UMTS transmitter use the radioOne1Zero-IF architecture to eliminate intermediate frequencies, directly converting signals between RF and baseband.
Page 15: Only For Training And Service Purposes
3. TECHNICAL BRIEF A generic, high-level functional block diagram of CT815 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 D5015(FEM, Front End Module). The UMTS receive paths each include an LNA, an RF band-pass filter, and a downconverter that translate the signal directly from RF- to-baseband using radioOne ZIF techniques.
Page 17: Only For Training And Service Purposes
DC offset corrections. The filter outputs are buffered and passed on to the MSM6280 IC for further processing as shown in Figure 3-4. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 18 - Only for training and service purposes...
Page 18: Only For Training And Service Purposes
This design guideline shows a tri-band GSM application. Both high-band and low band outputs are followed by resistive pads to ensure that the load presented to the outputs remains close to 50ohm. Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only...
Page 19: Umts Mode
The UMTS baseband outputs are turned off when the RTR6285 is downconverting GSM signals and on when the UMTS is operating. [Figure 3-4] UMTS Receiver Inputs Topologies LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 20 - Only for training and service purposes...
Page 20: Only For Training And Service Purposes
FRF. The RTR6285 IC is able to support UMTS 2100/1900/1800/1700 and 850 mode transmitting. This design guideline shows only UMTS 2100 applications. Copyright © 2009 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
3. TECHNICAL BRIEF [Figure 3.5] RTR6285 IC Functional Block Diagram LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 22 - Only for training and service purposes...
Page 22: Gps Mode
GPS LNA. The impedance transformer circuit topology is shown in Figure 3-6. [Figure 3.6] GPS Input Network Topology Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 23 -...
Page 23: Lo Generation And Distribution Circuit
With the integrated fractional-N PLL synthesizers, the RTR6285 ICs have the advantage of more flexible loop bandwidth control, fast lock time, and lowintegrated phase error. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 24 - Only for training and service purposes...
Page 24: Off-Chip Rf Components
1V, making it suitable for use in critical low- power GPS applications or during low-battery situations. 3.6.2 D5015(FL102:FEM, Front End Module) Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 25 -...
Page 25: Only For Training And Service Purposes
HIGH PCN RX HIGH PCS RX Table 1. Antenna Switch Module Logic [Figure 3.7] D5015 Functional Block Diagram. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 26 - Only for training and service purposes...
Page 26: Only For Training And Service Purposes
“off” leakage is a few microamperes with full primary voltage supplied from the battery. [Figure 3.8] SKY77170 Functional Block Diagram. Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 27 - Only for training and service purposes...
Page 27: Only For Training And Service Purposes
50 Ω system. [Figure 3.9] AWT6321R Functional Block Diagram. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 28 - Only for training and service purposes...
Page 28: Only For Training And Service Purposes
The low profile, ultra-small package is enabled via TriQuint’s CuFlip® technology. [Figure 3.10] TQM7M5012 Functional Block Diagram. Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 29 - Only for training and service purposes...
Page 29: Digital Baseband(Dbb/Msm7201A)
- CS data rates supporting 64kbps DL / 64kbps UL - AMR (all rates) ■ GSM Features - Voice features (FR,EFR,AMR,HR) - Circuit-switched data features(9.6K,14.4K,Fax) LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 30 - Only for training and service purposes...
Page 30: Only For Training And Service Purposes
- Dual Memory Buses(EBI1-SDRAM & EBI2-NAND Flash) - External Memory Interface (Micro SD) ■ Data Communication - Bluetooth - Slave USB Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 31 - Only for training and service purposes...
Page 31: Hardware Architecture
UART3 UART2 USB1.1 Battery Battery PM7540 PM7540 1300mAh RTC Battery RTC Battery Figure. Simplified Block Diagram of System LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 32 - Only for training and service purposes...
Page 32: Only For Training And Service Purposes
Speaker EVRC, QCELP AMR, CMX, MIDI Tx DAC 4 Bit PM7540 USIM Figure. Simplified Block Diagram of MSM7201A Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 33 - Only for training and service purposes...
Page 33: Subsystem(Msm7201A)
Rx and Tx signal path, control DC offset errors, and maintain the system frequency reference. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 34 - Only for training and service purposes...
Page 34: Only For Training And Service Purposes
LCD, RAM, ROM, and EEPROM devices. Through a generic serial bus interface (SBI) the ARM926EJ-S configures and controls the functionality of the RTR6280 and PM7540 devices. Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 35 -...
Page 35: Only For Training And Service Purposes
The USB controller acts as a USB peripheral communicating with the USB host. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 36 - Only for training and service purposes...
Page 36: Power Block
MSM device controls and statuses the PM7540 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 © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 37 -...
Page 37: Only For Training And Service Purposes
3. TECHNICAL BRIEF Figure. PM7540 Functional Block Diagram LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 38 - Only for training and service purposes...
Page 38: Only For Training And Service Purposes
U8210 Charging Control block 5~0 (%) 47~26 (%) 25~6 (%) 100~73 (%) 72~48 (%) Figure. CT815 Battery Bar Display(Stand By Condition) Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 39 - Only for training and service purposes...
Page 39: Only For Training And Service Purposes
(3.2V). The charging current is set to 80mA. Parameter Unit Trickle Current PM7540 Input Power Managemen LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 40 - Only for training and service purposes...
Page 40: Only For Training And Service Purposes
■ Charging time : Max 2.5h (Except time trickle charging) ■ Full charge indication current (icon stop current) : 60mA ■ Cut-off voltage : 3.20V Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 41 -...
Page 41: External Memory Interface
(Flash / DRAM) NAND 1.8V 45ns / 166MHz (CL3) HYH0SSJ0MF3P- Hynix 5L60E SDRAM 1.8V Table#1. External memory interface for CT815 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 42 - Only for training and service purposes...
Page 42: Only For Training And Service Purposes
DQM[3:0] MSM7201A DQS[3:0] MMC_DATA[3:0] External Memory MMC_CMD MMC_CLK (MICRO SD card) Figure. Simplified Block Diagram of Memory Interface Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 43 - Only for training and service purposes...
Page 43: H/W Sub System
■ TX_AGC_ADJ : control the gain of the Tx signal prior to the power amplifier ■ DAC_REF : Reference input to the MSM Tx data DACs Figure. Block Diagram of RF Interface LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 44 - Only for training and service purposes...
Page 44: Only For Training And Service Purposes
VREG_USIM 2.85V USIM CLK USIM Reset PM6658 MSM6280 USIM USIM Reset USIM Data USIM Data Figure. SIM Interface Copyright © 2009 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
ULPI PHY chip to complete the design. The ULPI core embedded in the MSM along with the PM7540 IC and a USB high-speed PHY IC provide support for the highspeed interface. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 46 - Only for training and service purposes...
Page 46: Only For Training And Service Purposes
USBH_CLK USBH_DIR ISP1508AET MSM7201A USBH_DM USBH_NEXT u-USB Connector. USBH_DP USBH_STOP USBH_DATA[0:7] Figure. USB block(MSM7201A Side & ISP1508AET Side) Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 47 - Only for training and service purposes...
Page 47: Only For Training And Service Purposes
VREG_MSMP_2.6V KEY_ROW[0] KEY_ROW[1] KEY_ROW[2] KEY_COL[0] KEY_COL[1] KEY_COL[2] KB601 ON/END KPD_PWR_N Figure. Power ON / OFF Button Keypad circuit LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 48 - Only for training and service purposes...
Page 48: Only For Training And Service Purposes
KEY_COL[0] KEY_ROW[1] KEY_ROW[2] D601 PRSB6.8C CN602 R607 KEY_COL[1] R608 KEY ROW[0] R609 Figure. Camera & Suspend Keypad Circuit Copyright © 2009 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
VREG_MSMP_2.6V Figure. SEND Keypad Circuit Figure. RESET Keypad Circuit SW601 KEY_ROW[1] KEY_ROW[2] KEY_COL[2] KEY_ROW[0] Figure. Jog Keypad Circuit LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 50 - Only for training and service purposes...
Page 50 3. TECHNICAL BRIEF 3.12.4 Touch Interface In CT815, 4-wire touch screen panel is used for user input method. Two resistive layers make up a 4- wire touch screen panel and are separated by insulating dots. The inside surface of each layer is coated with a transparent metal oxide coating that generates a gradient across each layer when voltage is applied.
Page 51: Only For Training And Service Purposes
LD603 LEMC-S11G KTK5132E Q601 LEDR KTK5132E Q602 LEDG KTK5132E Q603 LEDB Figure. Schematic of KEY back light circuit LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 52 - Only for training and service purposes...
Page 52: Audio And Sound
Head Set (Audio Subsystem) AUDIO_I2C_SDA AUDIO_I2C_SCL HS_MIC EAR_SENSE 3.5pi Earjack FM_ANT Figure. Block diagram of Audio & Sound path Copyright © 2009 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
The DSP audio processing is configured through the QDSP5000 command types and is not directly controlled by the microprocessor. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 54 - Only for training and service purposes...
Page 54: Only For Training And Service Purposes
3. TECHNICAL BRIEF Figure. Detailed diagram of MSM7201A audio interface Copyright © 2009 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
Figure. Detailed diagram of LM49100 audio interface LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 56 - Only for training and service purposes...
Page 56: Only For Training And Service Purposes
7620-3_5G-DB1-A J401 FB402 HS_MIC EAR_SENSE R416 R417 FM_ANT FM_ANT EAR_SENSE Close HIGH (detect) Open AGND CONNECT TO U503.E3 Copyright © 2009 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
LM49100GR C518 4.7u BYPASS GNDS VREG_HP_AMP_2.6V VDDI2C VDDHP AUDIO_I2C_SDA AUDIO_I2C_SCL VDDCP AGND C519 0.1u C520 C521 0.1u 4.7u LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 58 - Only for training and service purposes...
Page 58: Camera Interface
3. TECHNICAL BRIEF 3.14 Camera interface CT815 has one cameras : 3M Pixel CMOS Camera Below figures shows the camera board to board connector and camera I/F signal. 3.14.1 3Mega Camera Interface ICVE10184E070R100FR ICVE10184E070R100FR CAM_DATA[4] INOUT_A1 INOUT_B1 FLT_CAM_DATA[4] CAM_DATA[0] INOUT_A1...
Page 59: Only For Training And Service Purposes
Digital power(1.8V) VDDIO Power Digital power(1.8V) Table. Interface between 3M Camera Module and SUB Board (in camera module) LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 60 - Only for training and service purposes...
Page 60: Only For Training And Service Purposes
IOUT BL_I2C_SCL U501 BH1600FVC R509 LDO1O CPGND LDO2O 120K SGND WPWMIN LEDGND FLASHCNT Figure. Schematic of Sub PMIC Copyright © 2009 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
MDDI_P_STB_P LCD_CS_N LCD_CS_N LCD_VSYNC LCD_VSYNC LCD_RESET_N LCD_RESET_N VREG_MSME_1.8V I/O Vcc(1.8V) VREG_LCD_2.8V Vcc(2.8V) PM7540 Figure. LCD I/F Block Diagram LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 62 - Only for training and service purposes...
Page 62: Only For Training And Service Purposes
MDDI_P_STB_P LCD_RESET_N WLED4 WLED5 WLED2 WLED3 WLED_PWR WLED1 D602 VSMF05LCC Figure. Schematic of LCD connector (in Main PCB) Copyright © 2009 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
3. TECHNICAL BRIEF Table. Interface between LCD Module and Main Board LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 64 - Only for training and service purposes...
Page 64: Proximity Sensor
PWM Output(17.5 kHz) QSDL-M900 PROX_ADC To PMIC(U406) MPP_2(N2) MSM7201A(U202) GPIO 30: MSM Disable PROX_EN_N Figure. Proximity Sensor Block Diagram Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 65 - Only for training and service purposes...
Page 65: Luminance Sensor
LDO1O CPGND LDO2O 120K SGND WPWMIN LEDGND FLASHCNT Luminance Sensor Schematic U502 U501 MSM7201A Luminance Sensor Block Diagram LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 66 - Only for training and service purposes...
Page 66: Motion Sensor
MSM7201A VREG_MSMP_2.6V GPIO 49 : Motion_INT U506 GPIO42 : Motion_I2C_SDA BMA150 GPIO41 : Motion_I2C_SCL Luminance Sensor Block Diagram Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 67 - Only for training and service purposes...
Page 67: Main Features
- Internal User Memory over 128MB - 1300 mAh (Li-Ion Polymer) - Windows MobileTM 6.1 Professional - Microsoft Office Mobile LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 68 - Only for training and service purposes...
Page 68: Main Component
PMIC Main board, Top Main board, Bottom WLAN, USIM BT,FM 3M Camera Sub board, Bottom Sub board, Top Copyright © 2009 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
W2100 PAM SW101 Test Connector FL105 GSM SAW FILTER FL109 W1900 DUPLEXER FL108 W850, 1900 SAWFILTER FL112 W2100 DUPLEXER LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 70 - Only for training and service purposes...
Page 70: Only For Training And Service Purposes
Audio Subsystem S501 MicroSD SOCKET CN300 Micro USB 5PIN U402 Over-voltage Protection Connector U202 MCU, MSM7201A U104 GPS LNA Copyright © 2009 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
Proximity sensor Control IC SW100 WLAN TEST CON U602 HS_MIC LDO U105 2Input OR Gate U504 Proximity sensor LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 72 - Only for training and service purposes...
Page 72: Trouble Shooting
U106 FL109 U105 FL107 FL102 FL110 FL113 U102 FL104 FL103 U101 FL105 FL101 RF component (WCDMA / GSM) Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 73 - Only for training and service purposes...
Page 73: Only For Training And Service Purposes
GSM Dual TX SAW(switch) GPS Antenna PAD FL106 U104 RF component (GPS) Reference Description U104 GPS LNA FL106 GPS SAW FILTER LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 74 - Only for training and service purposes...
Page 74: Signal Path
4. TROUBLE SHOOTING 4.2 SIGNAL PATH GSM850/GSM900/DCS/PCS's RX/TX Signal PATH A. GSM850/GSM900/DCS1800/PCS1900 RX PATH B. GSM850/GSM900/DCS1800/PCS1900 TX PATH Copyright © 2009 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
WCDMA I,II and V Band RX Signal PATH C-1. WCDMA 850 RX PATH C-2. WCDMA 1900 RX PATH C-3. WCDMA 2100 RX PATH LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 76 - Only for training and service purposes...
Page 76: Only For Training And Service Purposes
WCDMA I,II and V Band TX Signal PATH D-1. WCDMA 850 TX PATH D-2. WCDMA 1900 TX PATH D-3. WCDMA 2100 TX PATH Copyright © 2009 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
4. TROUBLE SHOOTING GPS Signal PATH E. GPS Rx PATH LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 78 - Only for training and service purposes...
Page 78: Checking Tcxo Block
0.01u DSA321SCA VREG_MSME_1.8V R122 100K 0.1u TC7SH04FS R126 100p USBH_REF_CLK U103 100p Schematic of the Crystal Part (19.2MHz) Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 79 - Only for training and service purposes...
Page 79: Only For Training And Service Purposes
2.4V ≥ Voltage ≥ 0.4V Che ck MSM6280 Check TP3 Check soldering and 19.2 MHz Signal components TCXO is OK LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 80 - Only for training and service purposes...
Page 80: Checking Front End Module(Fem)Block81
4. TROUBLE SHOOTING 4.4 Checking Front End Module(FEM) Block ANT_SEL0 ANT_SEL1 ANT_SEL2 SW101 ANT_SEL3 FL102 VREG_SYNTH(TP1) Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 81 - Only for training and service purposes...
Page 81: Only For Training And Service Purposes
WCDMA_1900 PCN_PCS_TX +2.75V GSM850_EGSM_TX L109 VREG_SYNTH 15nH 0.1u ANT_SEL0 ANT_SEL1 ANT_SEL2 ANT_SEL3 Schematic of the Antenna Switch Block LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 82 - Only for training and service purposes...
Page 82: Only For Training And Service Purposes
Checking Switch Block Power Source Check ANT_SEL 0, 1, 2 Hight Level Check the 1.2V<Voltage<7V TP1(VREG_SYNTH) Check the Logic In each mode Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 83 - Only for training and service purposes...
Page 83: Checking Wcdma Block
3. Check RF Tx Level 4. Check PAM Blocck Refer to 1.5.4 5. Check RF Level 6. Re-download SW & Cal. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 84 - Only for training and service purposes...
Page 85 Refer to 1.3 4.5.2 Checking ASM(FEM) Block Refer to 1.4 4.5.3 Checking RF TX Level Test Point (TX Level) LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 86 - Only for training and service purposes...
Page 86 C133 TX_IN WCDMA_PA_R0 1000p 1000p L143 C134 2.2nH WCDMA_2100_ON 0.5p RX_WCDMA_2100 4.7nH C136 SDMY0001501 W2100 Band I C137 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 87 - Only for training and service purposes...
Page 87 RTR6285 Maximum output Power = 7 dBm RTR6285 minimum output Power = -80 dBm PAM(ACPM-7381) = Maximum input Power = 10 dBm LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 88 - Only for training and service purposes...
Page 88: Checking Pam Block
When PAM is under the operation of high power mode (PA_R0(C108,C131):Low), PAM OUT power must be over 21 dBm PAM IN power must be under 10 dBm Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 89 -...
Page 89 L138 GND1 VMODE0 2.7nH 6.8p ENABLE C129 C131 SMPY0017801 C128 L139 C133 WCDMA_PA_R0 1000p 1000p WCDMA_2100_ON 0.5p W2100 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 90 - Only for training and service purposes...
Page 90 Check TP2 Check MSM6280 PA_R0 ≥ 2.6 V Check TP1 Check RTR6285 Over 10 dBm? Change the board Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 91 - Only for training and service purposes...
Page 91 4. TROUBLE SHOOTING 4.5.5 Checking RF Rx Level Test Point (RF Rx Level) LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 92 - Only for training and service purposes...
Page 92 2.7nH RX_WCDMA_2100 4.7nH C136 C135 SDMY0001501 Band I C137 C138 C139 WB2100_MIX_INM 3.3p WCDMA RX 2100 LNA Circuit Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 93 - Only for training and service purposes...
Page 93 RX_WCDMA_2100_LNA_OUT W2100 RX(2110 - 2170 MHz) 2.7nH 2.7nH C135 C138 C139 WB2100_MIX_INM 3.3p WCDMA RX 2100 LNA Circuit LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 94 - Only for training and service purposes...
Page 94 Check Duplexer Signal exist ? Check TP4 Check RTR6285 and Signal exist ? Rx SAW filter Change the board Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 95 - Only for training and service purposes...
Page 95: Checking Gsm Block
1. Check TCXO Block 2. Check ANT.SW Module 3. Check RF TRX Level 4. Re-download SW & Cal. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 96 - Only for training and service purposes...
Page 96 4.6.1 Checking TCXO Block Refer to 1.3 4.6.2 Checking FEM(D5015) Block Refer to 1.4 4.6.3 Checking RF TX level Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 97 - Only for training and service purposes...
Page 97 +2.75V GSM850_EGSM_TX L109 VREG_SYNTH 15nH 0.1u ANT_SEL0 ANT_SEL1 ANT_SEL2 ANT_SEL3 L113 100p L114 27nH 2.7nH 4.7p L115 6.8nH LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 98 - Only for training and service purposes...
Page 98 If DCS/PCS(TP3) under 6 dBm ? No Problem Check soldering and Check RTR & PAD components Still exist Problem Change the board Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 99 - Only for training and service purposes...
Page 99: Checking Rf Rx Block
4. TROUBLE SHOOTING 4.6.4 Checking RF Rx Block GSM850/GSM900/DCS/PCS LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 100 - Only for training and service purposes...
Page 100 15nH PCS(1930-1990 MHz) 0.1u L110 L111 3.9nH 2.7p ANT_SEL0 RX_PCS_P ANT_SEL1 ANT_SEL2 ANT_SEL3 Schematic of GSM/DCS/PCS Rx Block Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 101 - Only for training and service purposes...
Page 102: Power On Troubleshooting
Check an U202 SMT status by X-ray Exc hange U202 o r Change the Main board And Retest Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 103 - Only for training and service purposes...
Page 103 C439 : VMSME_1.8V C437 : VMSMC1_1.2V C438 : VMSMC2_1.2V C440 : VMSMP_2.6V [ CT815 Main PCB Bottom ] LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 104 - Only for training and service purposes...
Page 104: Charger Troubleshooting
- Check the charger (TA or USB Cable) connector - Check the OVP Circuit - Check the charging current Path - Check the battery Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 105 - Only for training and service purposes...
Page 105 X-ray Exc hange U202 or Change th e Main board And Retest [ Charger Troubleshooting Flow ] LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 106 - Only for training and service purposes...
Page 106 4. TROUBLE SHOOTING R402 U401 FL401 CN401 : u-USB U402 [ Charging part ] Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 107 - Only for training and service purposes...
Page 107: Usb Trouble
4.9 USB trouble USB Initial sequence of CT815 is : USB connected to CT815 → VCHG_VBUS(R409) go to 5V → USBH_SEL go to 0V(U404 Pin#10) → USBH_CS go to 1.8V (R403) → USBH_DM go to 3.3V (U404 Pin#7) → USB_DATA is triggered → USB work...
Page 108 1.0 USB_DP_TX USBH_DM HSD2- HSD1+ rev 1.0 USB_DM_RX USBH_DP HSD2+ HSD1- USBH_SEL C413 1 (USBH) 0.1u HIGH Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 109 - Only for training and service purposes...
Page 110: Audio Trouble
The sine wave appear Check t he U503 at Speaker Sold er pads ? Can you hear the tone? Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 111 - Only for training and service purposes...
Page 111 R510 C516 220n HPH_R C517 220n HPH_L U503 LM49100GR C518 4.7u BYPASS GNDS VDDI2C VDDHP CN511 SPKR_P SPKR_N LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 112 - Only for training and service purposes...
Page 112 4. TROUBLE SHOOTING Speaker Solder Pads U503 (Audio subsystem) C514, C515 C514, C515 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 113 - Only for training and service purposes...
Page 113 Or chang e the M ain b'd Can you hear the tone Check the J401 or sound? or ch ange the Main b 'd LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 114 - Only for training and service purposes...
Page 114: Audio Subsystem
J401 FB402 HS_MIC EAR_SENSE R416 R417 FM_ANT FM_ANT EAR_SENSE Close HIGH (detect) Open AGND CONNECT TO U503.E3 [J401] Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 115 - Only for training and service purposes...
Page 115 4. TROUBLE SHOOTING J401 HPH_R,L Ear_Sense R416, R417 U503 (audio subsystem) C516, C517 output R416, R417 C516, C517 output LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 116 - Only for training and service purposes...
Page 116 The sine wave appear at Check U503 pads o f speaker ? Can you hear th e tone? Change the speaker Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 117 - Only for training and service purposes...
Page 117 R510 C516 220n HPH_R C517 220n HPH_L U503 LM49100GR C518 4.7u BYPASS GNDS VDDI2C VDDHP CN511 SPKR_P SPKR_N LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 118 - Only for training and service purposes...
Page 118 4. TROUBLE SHOOTING Speaker Solder Pads U503 C511 C510 C510, C511 output Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 119 - Only for training and service purposes...
Page 119 MIC Can you s coping some Change the MIC sound signal at C209,C210? Work w ell? LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 120 - Only for training and service purposes...
Page 120 MIC_1P MIC501 MIC_1N VMIC_BIAS SPM0204HE5-PB-3 TDMA C209, C210 WIPER YM_LR TOUCH_Y1YD YP_UR TOUCH_Y2YU [MSM7201A] XM_LL TOUCH_X2XL XP_UL TOUCH_X1XR Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 121 - Only for training and service purposes...
Page 121 4. TROUBLE SHOOTING Main MIC (MIC501) C210 C209 1kHz tone C209, C210 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 122 - Only for training and service purposes...
Page 122 Check t he U201 or Can you s coping some Change the Main B'd sound signal at C214,C219? Work well? Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 123 - Only for training and service purposes...
Page 123 7620-3_5G-DB1-A J401 FB402 HS_MIC EAR_SENSE R416 R417 FM_ANT FM_ANT EAR_SENSE Close HIGH (detect) Open AGND CONNECT TO U503.E3 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 124 - Only for training and service purposes...
Page 124 4. TROUBLE SHOOTING Ear_Sense HS_MIC R413(LDO_OutPut) HS_MIC_BIAS_LDO 1kHz tone C212 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 125 - Only for training and service purposes...
Page 125: Camera Trouble
(FL601, FL602) Chang e th e camera Change the Filter (FL601, FL602) Camera is OK Change the Main board LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 126 - Only for training and service purposes...
Page 126 CAM_DVDD_1.8V (C122) PM_CAM_AF_2.8V, (C120) 3MCAM_RESET_N (C118) CAM_IOVDD_2.8V (C121) 24MHz Master Clock (R101) CAMERA DATA EMI FILTER (FL601, FL602) Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 127 - Only for training and service purposes...
Page 127 C125 0.1u 0.1u 0.1u 0.1u 24MHz Master Clock CAM_AVDD_2.8V PM_CAM_AF_2.8V, (R101) (C119) (C120) Schematic of 3M camera part LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 128 - Only for training and service purposes...
Page 128: Main Lcd Trouble
Check VREG_ LCD_2.8V, VREG_MSME_1.8V LCD_RESET_N in Main BD Change the Main BD Display OK? Change the LCD module The LCD works Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 129 - Only for training and service purposes...
Page 129 4. TROUBLE SHOOTING VREG_MSME_1.8V CN603 : LCD (C602) CONNECTOR LCD_RESET_N VREG_LCD_2.8V (D602 PIN #4) (C603) LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 130 - Only for training and service purposes...
Page 130 LCD_VSYNC MDDI_P_STB_M MDDI_P_STB_P LCD_RESET_N WLED4 WLED5 WLED2 WLED3 WLED_PWR WLED1 D602 VSMF05LCC LCD_RESET_N (D602) Schematic of LCD part Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 131 - Only for training and service purposes...
Page 131: Sim Detect Troubleshooting
VRUIM_3.0V is 2 .85V? Check J10 0 SIM_CLK i s run? Change SIM card Work w ell? Change the Sub board LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 132 - Only for training and service purposes...
Page 132 R117 J100 GND1 SIM_RST SIM_CLK SIM_IO GND2 GND5 R118 GND3 GND4 C143 C144 0603 Figure .USIM part schematics Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 133 - Only for training and service purposes...
Page 133: Keypad Backlight Troubleshooting
Check an U100 SMT status by X-ray Exc hange U100 o r Chang e th e Main bo ard And Rete st LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 134 - Only for training and service purposes...
Page 135: Linear Motor
LIN_MOT_EN is high? LIN_MOT_PWN is wor k? Check an U601 SMT status by X-ray , Exc han ge U601 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 136 - Only for training and service purposes...
Page 136 4. TROUBLE SHOOTING MOTOR+ MOTOR- LIN_MOT_PWM LINEAR MOTOR DRIVER VREG_MOTOR_3.0V U601 ISA1000 LIN_MOTOR_EN MOTOR+ LIN_MOT_PWM MODE GAIN MOTOR- C605 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 137 - Only for training and service purposes...
Page 137: Proximity Sensor On/Off Trouble
Change the Main Board Change the IrDA sensor PROX_ADC signal output U504 Work well? Change the Main Board LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 138 - Only for training and service purposes...
Page 138 0.2 ~ 2.6 V PROX_LEDON signal output VREG_MSMP_2.6V PROX_ADC 17.5 kHz DOUT disable Figure. Engineer Mode Proximity Test Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 139 - Only for training and service purposes...
Page 139: Luminance Sensor On/Off Trouble
Change the Luminan ce sensor U501 GC1 / 2 sig nal outpu t U501 Work well? Change the Main Board LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 140 - Only for training and service purposes...
Page 140 CPGND LDO2O 120K SGND WPWMIN LEDGND FLASHCNT R506 : BL_I2C_SDA R507 : BL_I2C_SCL Figure. Engineer Mode Proximity Test Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 141 - Only for training and service purposes...
Page 141: Motion Sensor On/Off Trouble
Change the Main Board Change the Motion sensor MOTION_I2C_SDA / SCL U506 outp ut Work well? Change the Main Bo ard LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 142 - Only for training and service purposes...
Page 142 C531 0.1u 0.1u U506 BMA150 VDDIO MOTION_I2C_SDA TP502 MOTION_INT MOTION_I2C_SCL MOTION_INT (TP502) MOTION_I2C_SDA (R532) MOTION_I2C_SCL (R531) VREG_MSMP_2.6V (C531) Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 143 - Only for training and service purposes...
Page 143: Download
Additionally, LGMDP allows multi downloading up to 16 handsets at the same time. • CT815 does NOT use LG USB driver but LG SP USB driver. LG SP USB driver is used for only smart phone which is based on Windows Mobile OS.
Page 144 Therefore, users have to backup all the user data(Contacts list, pictures, SMS list, or mp3 files, etc.) in the phone using another backup tool before downloading. Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only...
Page 145: Connecting To Pc
Check if state shows Enable for the port to be connected for downloading images. Then click on the Connect button. The port number(COM16) might be different ) CT815 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 146 - Only for training and service purposes...
Page 146 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 147 - Only for training and service purposes...
Page 147 The folder name indicates the path where the image files are located.) CT815 CT815 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 148 - Only for training and service purposes...
Page 148 The phone in which wrong image file is downloaded might not be working. CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 149 - Only for training and service purposes...
Page 149 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 150 - Only for training and service purposes...
Page 150 Database & Contents). CT815 CT815 CT815 CT815 CT815 CT815 t í CT815 CT815 CT815 CT815 CT815 CT815 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 151 - Only for training and service purposes...
Page 152 • Rebooting the handset and re-establishing the connection. The handset will go emergency mode. • Downloading all the image files. CT815 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 153 - Only for training and service purposes...
Page 153 User can also restore NV data using NV CT815 Default image selection(Please refer to page 17). • Downloading process completed successfully CT815 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 154 - Only for training and service purposes...
Page 154 NV Backup/Restore option is not needed). Click the start button, then NV restoring is executed. CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 CT815 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 155 - Only for training and service purposes...
Page 155: Block Diagram
6. BLOCK DIAGRAM 6. BLOCK DIAGRAM MSM7201A Functional Diagram LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 156 - Only for training and service purposes...
Page 156 GSM850 GCELL_INP TX_IQ TX_IQ GCELL_INN EGSM900 EGSM_INP DAC_IREF DAC_IREF EGSM_INN DCS_INP DCS_INN DCS1800 GPCS_INP GPCS_INN PCS1900 CTRL0/1/2/3 ANT_SEL0/1/2/3 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 157 - Only for training and service purposes...
Page 157 WCDMA_PA_R0 VMODE0 GPS_LNA_EN ALM-1412 GPIO58 ANT_SEL0 D5015 CTRL1 GPIO75 ANT_SEL1 CTRL2 GPIO74 ANT_SEL2 CTRL3 GPIO73 ANT_SEL3 CTRL4 GPIO72 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 158 - Only for training and service purposes...
Page 158 MSM7201A MMC_DATA[3:0] SIM_RESET MSM_SIM_RESET External Memory PMIC SIM_IO MSM_SIM_IO USIM MMC_CMD PM7540 (MICRO SD card) MSM_SIM_CLK MMC_CLK SIM_CLK Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 159 - Only for training and service purposes...
Page 159 18x12 Audio Sub System HPH_L LM49100GR AUDIO_ADDR MSM7201A AUDIO_I2C_SCL AUDIO_I2C_SDA EAR JACK EAR_SENSE_N HS_MIC CALL_KEY MICBIAS MIC_1P MIC_1N LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 160 - Only for training and service purposes...
Page 160 ANT_SELP_RXBG MSM7201A BCM4325 BT_UART_CTS ANT_SELN_TXBT BT_UART_RTS BT_RESET_N BT_REG_ON BT_PCM_SYNC PM7540 SLEEP_CLK BT_PCM_IN BT_PCM_OUT 32.768KHz BT_PCM_CLK BT_WAKEUP 26MHz BT_HOST_WAKEUP Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 161 - Only for training and service purposes...
Page 161 MDDI_P_STB_M CAM_DATA[0:7] MDDI_P_STB_P MDDI_P_DATA_M 3M CAM 3M CAM WQVGA 3MCAM_LDO_EN MDDI_P_DATA_P 3 Inch LCD_CS_N VCAM_RESET_N VGA_IO_OFF CAMERA CAMERA LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 162 - Only for training and service purposes...
Page 162 HS DL_9100 APDS-9700 HSDL_9100 PROX_OUT MMC_CLK MMC_CMD Micro SD Micro SD MMC_DATA[0:3] MMC_CD SIM_RST SIM_CLK PM7540 USIM USIM SIM_IO Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 163 - Only for training and service purposes...
Page 163 USBH_DATA[0:7] TCXO TCXO MSM7201A USBH_REF_CLK HIGH SPEED UART3_TX(USBH_DATA[0]) UART3_RX(USBH_DATA[1] ) nUSB_OE1 CRADLE_USB_ CRADLE_USB_DM MSM_USB1_VP PM7540 MSM_USB1_VM FULL SPEED LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 164 - Only for training and service purposes...
Page 164 LCD Backlight LCD Backlight Charge Pump Charge Pump BATTERY BATTERY TCXO TCXO VREG_TCXO(2.85V/50mA) USIM USB Transceiver USIM USB Transceiver Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 165 - Only for training and service purposes...
Page 166: Circuit Diagram
RX_WCDMA_2100 4.7nH C135 C136 SDMY0001501 W2100 Band I C137 C139 C138 WB2100_MIX_INM 3.3p WCDMA RX 2100 LNA Circuit - 167 - Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 167 AD23 R623 SDRAM_D0 EBI1_DQ0 GPIO77 GSM_SAW_SW_MODE AD24 GPIO[95] for SECURE_BOOT GPIO78 INTER_RX_SW_2 TP204 UART3_TX R624 TP205 REMOTE_PWR_ON MSM7200A&JTAG - 168 - Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 168 All VREG_MSMA related decoupling caps should attach to inner GND plane VREG_MSMP_2.6V Route together VREG_MSMC2_1.2V Near to U201 R304 VSNS_MSMC2_1.2V 0603 - 169 - Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 169 KPD_DRV_N PON_RESET_N nPON_RST D407 LCD_DRV_N PS_HOLD PS_HOLD FLSH_DRV_N KDS114E JTAG_PS_HOLD R421 200K PRSB6.8C D408 OJ401 OJ402 OJ403 OJ404 - 170 - Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 170 R533 DETECT_B DUMMY3 VDDIO MOTION_I2C_SDA TP502 MOTION_INT MOTION_I2C_SCL MMC_CD Close HIGH (detect) Open AUDIO & MicorSD & SIM - 171 - Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 171 INOUT_B2 CAM_DATA[6] INOUT_A3 INOUT_B3 FLT_CAM_DATA[6] FLT_CAM_DATA[5] FLT_CAM_DATA[6] CAM_DATA[7] INOUT_A4 INOUT_B4 FLT_CAM_DATA[7] ENBY0039601 C606 C607 C610 FL602 GB042-20S-H10-E3000 0.1u - 172 - Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 172 J100 BT & WLAN & CAMERA GND1 SIM_RST SIM_CLK SIM_IO GND2 GND5 R118 GND3 GND4 C143 C144 0603 - 173 - Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 174: Bga Ic Pin Check
8. BGA IC PIN CHECK 8. BGA IC PIN CHECK CT815 BGA IC PIN MAP U406, EUSY0342201, PM7540 used unused Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 175 - Only for training and service purposes...
Page 175 8. BGA IC PIN CHECK CT815 BGA IC PIN MAP U202, EUSY0344202, MSM7201A used unused LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 176 - Only for training and service purposes...
Page 176 8. BGA IC PIN CHECK CT815 BGA IC PIN MAP U302, EUSY0347501, MCP(HYH0SSJ0MF3P-5L60E) used unused Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 177 - Only for training and service purposes...
Page 178: Pcb Layout
KB602 SEND Key Can not hang up the call Can not make up a call Can not power on CT815 - 179 - Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 179 FL110/FL113 WCDMA(I, II) RX SAW WCDMA TX Power & WCDMA(I, II) RX RX Sensitivity CT815 Sensitivity No Service No Service - 180 - Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 180 Can not operate Camera RTC reset CN102 Battery Conn. Can not power on Can not detect battery CT815 - 181 - Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 181 9. PCB LAYOUT J100 USIM Socket Can not detect USIM CN100 Camera Conn. Can not operate 3Mega Camera CT815 - 182 - Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 182: Calibration & Rf Auto Test (Hot Kimchi)
CT810 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 © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 183 - Only for training and service purposes...
Page 183 3. Select “LOGIC MODE” that you want → - Logic Mode 1: Calibration Only 2: Auto Test Only 3: Calibration + Auto LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 184 - Only for training and service purposes...
Page 184 CT810 Click "Start" CT815 Select "CT810" * Procedure 4. Select the model name “CT815” 5. Click “Start” button Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 185 - Only for training and service purposes...
Page 185: Test Mode
11.1 Enter the Engineer Menu 11.2 Tap 3. Device Test 11.3 Tap 6. Q_Test Program 11.4 Tap START(Phone Test Mode) Button LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 186 - Only for training and service purposes...
Page 186 4) White Color is Displayed 5) Black Color is Displayed 6) Adjustment screens are Displayed If OK, tab "YES" button Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 187 - Only for training and service purposes...
Page 187 MP3 Bell Test Start (4) MP3 Bell Test Ringtone (MP3) is played regularly IF OK, tab "YES" button LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 188 - Only for training and service purposes...
Page 188 5) Preview is displayed 6) Press send button then the recorded file is displayed IF OK, tab "YES" button Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 189 - Only for training and service purposes...
Page 189 IF OK, tab "YES" button Item Order Description Tab Start Button (8) Approach Sensor Test IF OK, tab "YES" button LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 190 - Only for training and service purposes...
Page 190 Tab Start Button (10) Key Test Press a key that Red arrow indicate IF OK, tab "YES" button Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 191 - Only for training and service purposes...
Page 191 This Note is Executed 2) Tab OK button to exit Test is completed IF OK, tab "YES" button LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 192 - Only for training and service purposes...
Page 192: Exploded View & Replacement Part List
12. EXPLODED VIEW & REPLACEMENT PART LIST 12.1 EXPLODED VIEW 16 27 - 193 - Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 194: Replacement Parts
COMPLEX, (empty), , , , , Color Without MTAB02 TAPE,PROTECTION MTAB0269501 COMPLEX, (empty), , , , , Color Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 195 - Only for training and service purposes...
Page 195 PRINTING, (empty), , , , , White Without MTAB00 TAPE,PROTECTION MTAB0247801 COMPLEX, (empty), , , , , Color LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 196 - Only for training and service purposes...
Page 196 COMPLEX, (empty), , , , , Color Without MPBL00 PAD,MSM MPBL0007701 COMPLEX, (empty), , , , , Color Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 197 - Only for training and service purposes...
Page 197: Main Component
0.5 pF,50V ,B ,NP0 ,TC ,1005 ,R/TP C107 CAP,CHIP,MAKER ECZH0000813 100 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP C108 CAP,CERAMIC,CHIP ECCH0000115 22 pF,50V,J,NP0,TC,1005,R/TP LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 198 - Only for training and service purposes...
Page 198 ECZH0000830 33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP C139 CAP,CERAMIC,CHIP ECCH0000180 3.3 pF,50V ,C ,NP0 ,TC ,1005 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 199 - Only for training and service purposes...
Page 199 CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP CAP,CHIP,MAKER ECZH0000839 4.7 pF,50V ,C ,NP0 ,TC ,1005 ,R/TP LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 200 - Only for training and service purposes...
Page 200 ECCH0000155 10 nF,16V,K,X7R,HD,1005,R/TP C325 CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C326 CAP,CERAMIC,CHIP ECCH0000155 10 nF,16V,K,X7R,HD,1005,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 201 - Only for training and service purposes...
Page 201 33 uF,10V ,M ,STD ,2012 ,R/TP ,; , ,[empty] ,[empty] , C401 CAP,TANTAL,CHIP ECTH0005203 ,[empty] , ,[empty] ,[empty] ,[empty] ,[empty] LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 202 - Only for training and service purposes...
Page 202 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C430 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C431 CAP,CERAMIC,CHIP ECCH0006201 4.7 uF,6.3V ,K ,X5R ,TC ,1608 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 203 - Only for training and service purposes...
Page 203 ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C463 CAP,CERAMIC,CHIP ECCH0000115 22 pF,50V,J,NP0,TC,1005,R/TP C464 CAP,CERAMIC,CHIP ECCH0000115 22 pF,50V,J,NP0,TC,1005,R/TP LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 204 - Only for training and service purposes...
Page 204 ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C531 CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 205 - Only for training and service purposes...
Page 205 CAP,CHIP,MAKER ECZH0000813 100 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP CAP,CHIP,MAKER ECZH0000813 100 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 206 - Only for training and service purposes...
Page 206 IR=30uA(VR=10V) D407 DIODE,SWITCHING EDSY0010501 ESC ,30 V,100 mA,R/TP ,SWITCH DIODE D408 DIODE,TVS EDTY0008606 DFN-2 ,7.82 V,150 mW,R/TP ,PB-FREE Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 207 - Only for training and service purposes...
Page 207 DUPLEXER,IMT SDMY0001501 dB,2.5*2.0*0.89 ,SMD ,Band1 duplexer, SAW ,; ,2140 ,42 ,1950 ,50 ,2.2 ,1.7 ,2.5X2.0X0.89 ,DUAL ,SMD ,R/TP LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 208 - Only for training and service purposes...
Page 208 2.7 nH,S ,1005 ,R/TP , L135 INDUCTOR,CHIP ELCH0004703 1 nH,S ,1005 ,R/TP , L136 INDUCTOR,CHIP ELCH0001056 2.7 nH,S ,1005 ,R/TP ,PBFREE Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 209 - Only for training and service purposes...
Page 209 2200 ohm,1/16W ,J ,1005 ,R/TP R116 RES,CHIP,MAKER ERHZ0000404 1 Kohm,1/16W ,J ,1005 ,R/TP R117 RES,CHIP ERHY0003301 100 ohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 210 - Only for training and service purposes...
Page 210 0OHM_1005_DNI OPEN R211 RES,CHIP,MAKER ERHZ0000522 24 ohm,1/16W ,J ,1005 ,R/TP R212 RES,CHIP,MAKER ERHZ0000522 24 ohm,1/16W ,J ,1005 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 211 - Only for training and service purposes...
Page 211 10 Kohm,1/16W ,J ,1005 ,R/TP R521 RES,CHIP,MAKER ERHZ0000486 47 Kohm,1/16W ,J ,1005 ,R/TP R522 RES,CHIP,MAKER ERHZ0000486 47 Kohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 212 - Only for training and service purposes...
Page 212 U102 SMPY0017001 dBm, %, A, dBc, dB, ,AXI , ,; , , , , , , , ,[empty] ,P/TP , Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 213 - Only for training and service purposes...
Page 213 5.5 V, ,SMD ,1005, 50pF VA604 VARISTOR SEVY0005201 5.5 V, ,SMD ,1005, 50pF VA605 VARISTOR SEVY0005201 5.5 V, ,SMD ,1005, 50pF LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 214 - Only for training and service purposes...
Page 214 DFN-2 ,7.82 V,150 mW,R/TP ,PB-FREE D404 DIODE,TVS EDTY0008606 DFN-2 ,7.82 V,150 mW,R/TP ,PB-FREE D405 DIODE,TVS EDTY0008606 DFN-2 ,7.82 V,150 mW,R/TP ,PB-FREE Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 215 - Only for training and service purposes...
Page 215 WSOF6 ,6 PIN,R/TP ,Luminance sensor ,; ,IC,A/D U501 EUSY0343701 Converter 6.9x2.75x2.7 ,4 PIN,R/TP ,Proximty sensor ,; ,IC U504 EUSY0358201 Assembly LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 216 - Only for training and service purposes...
Page 216 10000000 pF,6.3V ,M ,X5R ,TC ,1608 ,R/TP , , ,[empty] C138 CAP,CERAMIC,CHIP ECCH0005604 ,[empty] ,[empty] ,[empty] ,[empty] ,[empty] ,0.8 mm C139 CAP,CERAMIC,CHIP ECCH0000115 22 pF,50V,J,NP0,TC,1005,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 217 - Only for training and service purposes...
Page 217 26 MHz,2.5 PPM,10 pF,SMD ,32*15*1.0 ,TI_WL1251 ,; , X100 TCXO EXST0001901 ,2.5PPM ,2.8V , , , , ,SMD ,R/TP LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 218 - Only for training and service purposes...
Page 218 47 ohm,1/16W ,J ,1005 ,R/TP R102 RES,CHIP,MAKER ERHZ0000490 51 ohm,1/16W ,J ,1005 ,R/TP R103 RES,CHIP,MAKER ERHZ0000490 51 ohm,1/16W ,J ,1005 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 219 - Only for training and service purposes...
Page 219 SOD-323 ,6 V,400 W,R/TP ,PB-FREE FR-4 ,0.65 mm,STAGGERED-8 ,CT810 SUB ,; , , , , , , , , SPJY00 PCB,SUB SPJY0054601 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 220 - Only for training and service purposes...
Page 220: Accessory
100-240V ,5060 Hz,5.1 V,0.7 A,UL ,Micro USB B type, ADAPTOR,AC-DC SSAD0027606 ID(180Kohm, F) ,; , ,5.1 ,0.7 , , ,WALL 2P ,USB , Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 221 - Only for training and service purposes...
Page 221 Note...
Page 222 Note...

LG CT815 Service Manual

1 Introduction

2 Performance

3 Technical Brief

4 Trouble Shooting

5 Download

6 Block Diagram

7 Circuit Diagram

8 Bga IC Pin Check

9 Pcb Layout

10 Calibration & Rf Auto Test (Hot Kimchi)

11 Test Mode

12 Exploded View & Replacement Part List

Quick Links

Troubleshooting

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Summary of Contents for LG CT815

Table of Contents