Page 1 Internal Use Only Service Manual GT350 Date: May, 2010 / Issue 1.0...
Page 2: Table Of Contents
4.1 Trouble shooting test setup .............64 4.2 Power on Trouble ................65 4. Charging trouble ................68 4.4 LCD display trouble ..............71 - - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 4: Introduction
A local telephone company may make changes in its communications facilities or procedure. If these changes could reasonably be expected to affect the use of the GT350 or compatibility with the network, the telephone company is required to give advanced written notice to the user, allowing the user to take appropriate steps to maintain telephone service.
Page 5 When returning system boards or parts such as EEPROM to the factory, use the protective package as described. - 6 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 6: Abbreviations
Light Emitting Diode LG Electronics OPLL Offset Phase Locked Loop Power Amplifier Module Printed Circuit Board Programmable Gain Amplifier - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 7 Universal Asynchronous Receiver/Transmitter Voltage Controlled Oscillator DCXO Digitally Controled Crystal Oscillator Wireless Application Protocol 8PSK 8 Phase Shift Keying - 8 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 8: Performance
Buzzer Voice Recoding C-Mic Receiver Travel Adapter Options Bluetooth hands-free kit, Data Kit - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes LG Electronics LGE Property 5/115...
Page 9: Technical Specification
±4dB 18 dBm ±3dB 2 dBm ±5dB 16 dBm ±3dB 0 dBm ±5dB - 10 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LG Electronics LGE Property 6/115...
Page 10 1,200 1,800 Output RF Spectrum (due to switching transient) DCS1800/PCS1900 Offset from Carrier (kHz) Max. (dBm) 1,200 1,800 - 11 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 11 > 6 dB dB to ARL (dB) Level Ratio (dB) 17.5 22.5 30.7 Distortion 33.3 33.7 31.7 25.5 - 12 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 12 3.62V~3.67V 3.36V~3.61V 3.61V ±0.05V (Call) Low Voltage Warning 3.61V ±0.05V (Standby) Forced shut down Voltage 3.35 0.05 V - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 13 Battery full charge voltage = 4.2 V Capacity: 950mAh Switching-mode charger Travel Charger Input: 150 240 V, 50/60Hz Out put: 5.1, 0.7A - 14 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 14 Output RF Spectrum 6,000 (due to modulation) DCS1800, PCS1900 Offset from carrier(kHz) Max. dBc +0.5 600~<1,200 1,200~<1,800 1,800~<3,000 3,000~<6,000 6,000 - 15 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 15 1,200 Output RF Spectrum 1,800 (due to switching transient) DCS1800, PCS1900 Offset from carrier(kHz) Max. dBm 1,200 1,800 - 16 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 16: Technical Brief
VAFC (2.65V) VUSB(3.1V) VVIB(2.8V) MIC2(P/N) B/UP BAT. Figure 1 GT350 Functional block diagram - 17 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes LG Electronics LGE Property 13/115...
Page 17: Baseband Processor (Bbp) Introduction
3. TECHNICAL BRIEF 3.2 Baseband Processor (BBP) Introduction Figure 2 Top level block diagram of the S-GOLD3 (PMB8877) - 18 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 18 The clock system allows widely independent selection of frequencies for the essential parts of the S-GOLD3. Thus power consumption and performance can be optimized for each application. - 19 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 19 - An ITU-R BT.656 compatible Camera interface. - Programmable clock output for a camera - An multimedia/Secure Digital Card Interface (MMCI/SD:SDIO capable) - 20 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 20 PA MODE PAM Mode select 3.2.5 USIF Interface GT350 have three USIF Drivers as follow : - USIF1 : Hardware Flow Control / SW upgrade / Calibration - USIF2 : Not used Rx, CTS & RTS use BT Interface - USIF3 : WLAN Data Table 3.
Page 21 ADC channel Resource Interconnection Description BAT_ID Battery temperature measure RF_TEMP RF block temperature measure VSUPPLY Battery supply voltage measure - 22 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 22 3. TECHNICAL BRIEF 3.2.7 GPIO map Over a hundred allowable resources, GT350 is using as follows except dedicated to SIM and Memory. GPIO(General Purpose Input/Output) Map, describing application is shown in below table Table 5 S-Gold3 GPIO pin Map Port function...
Page 23 SIM CARD RESET #FIrDA: Fast IrDA IrDA_TX _USB_OE USB out enable IrDA_RX BT_INT BT interrupt #SWIF: 1 wire IF - 24 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 24 VMICP Power for MIC VMIC_P VMICN VMIC_N Power for MIC #I/Q-Signale: Analog Interface, Baseband PAOUT1 PA_LEVEL BB_I BB_IX - 25 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 25 TRACEPKT[1] TRACEPKT1 TRACEPKT[2] TRACEPKT2 TRACEPKT[3] TRACEPKT3 TRACEPKT[4] TRACEPKT4 TRACEPKT[5] TRACEPKT5 TRACEPKT[6] TRACEPKT6 TRACEPKT[7] TRACEPKT7 #External Bus Interface (EBU) - 26 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 26 DDR_BA0 MEM_BFCLKO1 MEM_BFCLKO2 DDR_CLK_N MEM_SDCLKO DDR_CLK MEM_BC0_n DDR_LDQM MEM_BC1_n DDR_UDQM MEM_BC2_n DDR_LDQS MEM_BC3_n DDR_UDQS MEM_A[0] DDR_DQ[0] MEM_A[1] DDR_DQ[1] - 27 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 27 LCD backlight control T_OUT10 _MUIC_INT MUIC interrupt T_IN0 T_IN1 _CHG_EN Charger enable #SPCU SPCU_RQ_IN0 SPCU_RQ_IN1 _BT_RESET BT reset - 28 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 28 F32K OSC32K OSC32K RESET_n _RESET RSTOUT_n RTC_OUT RTC_OUT #Extra I/Os & Interrupt Inputs DSPIN0 CLK32K DSPOUT1 WDOG DSPIN1 - 29 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 29: Power Management Ic
– SDBB can also act as main supply voltage for E-GOLD+ or S-GOLDlite baseband devices. – For S-GOLD two linear regulators for DSP and Core are cascaded after the SDBB. - 0 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 30 – Overtemperature Warning – Support of S-GOLD standby power-down concept – Support of S-GOLD Power-Down Pad Tristate Function - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 31 S-GOLD3 PLL VRTC 2V0_VRTC 2.11V Real Time Clock VAFC 2V65_VTOUCH 2.65V Touch VVIB 2V8_VCAM_A 2.8V 140mA Camera analog - 2 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32 EN_SET MUIC_ID C312 R326 R301 C301 C305 0.1u 3.3K (1%) (1%) (645mA) (100mA) (1005,50V,J,NP0) Figure 4 charging part - - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 33 10. Low battery alarm interval a. Stand by : 3 min b. Dedicated : 1 min 11. Switch-off voltage : 3.35 V - 4 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34: Power On/Off
Vbat-0.3) the above-mentioned bit won’t be set. To support Remote power on function for factory mass production, applied an analog switch as following figure. As monitoring the F_MODE and Key matrix KEY_ROW5& KEY_COL7, GT350 system recognize whether remote power on or End-key pushed.
Page 35 R124 F_MODE_ON F_MODE PWRON R123 Q201 100K PWR_KEY_IN Figure 7 Remote power on and End-key power on circuit - 6 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 36: Sim & Usd Interface
3. TECHNICAL BRIEF 3.5 SIM & uSD interface GT350 supports 1.8V & 2.9V plug in SIM, SIM interface scheme is shown in (Figure 8). SIM_IO, SIM_CLK, SIM_RST ports are used to communicate with BBP(S-Gold3) and the SIM power supply enabled by PMIC.
Page 37 Data bit [3] Command response Power Power supply Clock Ground Power ground DAT0 Data bit [0] DAT1 Data bit [1] - 8 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 38: Memory
3. TECHNICAL BRIEF 3.6 Memory 2Gbit NAND & 1Gbit DDR SDRAM employed on GT350 with 8 & 16 bit parallel data bus thru DDR_A[0:13] and DDR_DQ[0:15]. The 2Gbit Nand Flash memory with DDR RAM stacked device family offers multiple high-performance solutions.
Page 39: Lcd Display
- Backlight : 6 piece of white LED LCD FPC Interface Spec: Table 7. LCD FPC Interface Spec. - 40 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 40: Keypad Switching & Scanning
C407 C410 C411 C412 KEY_COL1 KEY_COL2 KEY_COL3 KEY_COL4 KEY_COL5 KEY_COL6 KEY_COL7 Figure 10 Key pad part key matrix - 41 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 41: Keypad Back-Light Illumination
And Qwerty Key Back-light is controlled by SM-Power Flash LED port which has constant current control function. The whole configuration of the SM-POWER Flash LED drivers is shown in below Figure11. - 42 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 42 C110 C109 LD102 LD101 R102 Q101 SLIDE_KEY_BL 2SC5585 Figure 11 Keypad Back-light LEDs LG Electronics LGE Property 39/115 - 4 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 43: Lcd Back-Light Illumination
EN/SET and PWM has remained low state for at least the t timeout period (see Figure 1). Figure 13 S2C wire Timing Diagram - 44 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 44: Audio
3. TECHNICAL BRIEF 3.11 Audio GT350 Audio signal flow diagram as following diagram. Figure 14 Audio signal flow diagram - 45 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 45 I2CVDD I2C2_SDA I2C2_SCL HSO_R C322 C323 0.1u 2.2u C324 C325 2.2u 2.2u R319 EAR_GND Figure 15 Audio amplifier - 46 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46 MAIN_MIC_N C309 C308 L302 100n SPU0410HR5H-PB MAIN_MIC_P SUMY0010609 C311 C310 C306 (1608) R308 VMIC_N Figure 16 Microphone circuit - 47 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 47: Charging Circuit
VCHG_OUT VSS2 _CHG_EN IFULL EN_SET C312 R326 R301 0.1u 3.3K (1%) (1%) (645mA) (100mA) Figure 17 Charging circuit - 48 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 48: Fm Radio & Bluetooth
- WLAN coexistence including 802.15.2 three-wire coexistence support - UART Interface - PCM Interface - I2S Interface - I2C Interface - 49 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 49 DUMMY3 BT_ANT FEED DUMMY2 DUMMY1 C719 SDBTPTR3015 C717 C718 1.8p Figure 18. Bluetooth / FM Radio Circuit Diagram - 50 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50 • I2C slave for FM • Two audio PCM interfaces (input and output) • Analogue stereo (output only) - 51 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 51 3. TECHNICAL BRIEF Figure 19. Bluetooth / FM Radio Functional Block Diagram - 52 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 52: Pin U-Usb Interface Connector
Multiplexing USB, UART and audio on a single micro USB connector Charger MUIC VBUS 5pin Micro UART USB connector Earphone Figure 20. u-USB Connector Block Diagram - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 53 I2C to control the switch position as well as read the results of the accessory detection. The TS5USBA33402 will also detect USB chargers including dedicated chargers (D+/D- shorted) and high power host/hub chargers. - 54 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 54: Rf Block Diagram
Functional Block Diagram Figure 22 GT350 RF part Block Diagram Product Specification Rev A1.1, 19-05-2006 - 55 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only LG Electronics LGE Property 51/115 Only for training and service purposes...
Page 55: General Description
Control 3.8GHz VCO SMARTiPM_Blockschaltbild_20060412.emf Figure 23 RF transceiver PMB6272 SMARTi-PM functional block diagram Figure 3 Functional Block Diagram - 56 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 56 HOT2 HOT1 GND1 26MHZ C613 C618 0.22uF 0.1uF 26MHZ_BT RF_CLK RF_DA Figure 24 RF transceiver PMB6272 SMARTi-PM schematic - 57 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 57: Receiver Part
DC-offset at baseband-output. A programmable gain correction can be applied to correct for front end- and receiver gain tolerances. - 58 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 58: Transmitter Part
In 8PSK mode, the ramping functionality is assured by an on-chip ramping generator, whereas output power is controlled by the PGA’s as described above. - 59 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 59: Rf Synthesizer
To cover the wide frequency range the VCO is automatically aligned by a binary automatic band selection (BABS) before each synthesizer startup. - 60 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 60: Front End Module Control
8.2p C612 L608 L601 100n Figure 27 FEM schematic Figure 27 FEM schematic LG Electronics LGE Property 57/115 - 61 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 61: Power Amplifier Module
RF output(DCS/PCS bands) DC blocked *10, 11, Ground 1~15 GND PAD GRID Ground pad grid is device underside - 62 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 62: Pam Schematic
PA_BAND C608 C603 PA_MODE C629 C611 C630 C606 C627 C601 C628 27pF 47pF (1608) Figure 28 PAM schematic - 6 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 63: Trouble Shooting
-Connect mobile switch cable between Communication test set and DUT when you need to make a phone call. -Follow trouble shooting procedure - 64 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. LG Electronics LGE Property 60/115 Only for training and service purposes...
Page 64: Power On Trouble
External Reset JIG Connector 2V62_VIO 2V0_VRTC R103 100K U101 _EXTRST SPOWER_INT PM_INT _RESET _PMRST C101 NC7WZ08L8X_F113 0.1uF EUSY0102803 R102 R101 - 65 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 65 Real Time Clock VAFC 2V65_VTOUCH 2.65V Touch VVIB 2V8_VCAM_A 2.8V 140mA Camera analog LG Electronics LGE Property 62/115 - 66 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 66 X500 Change Battery Connector 1. Don’t use Heat Gun 2. Replace main PCB - 67 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only LG Electronics LGE Property Only for training and service purposes 63/115...
Page 67: Charging Trouble
7 Full charge indication current (icon stop current) : 110 mA 8 Recharge voltage : 4.16 V 4.2V~3.76V 3.75V~3.68V 3.67V~3.62V 3.61V~3.35V - 68 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68 BQ25040 _CHG_EOC VSS1 EUSY0388501 VCHG_OUT VSS2 _CHG_EN IFULL EN_SET C312 R326 R301 0.1u 3.3K (1%) (1%) (645mA) (100mA) - 69 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 69 Battery thermistor Change the Battery value retest is about 10K? Charge is operating properly - 70 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LG Electronics LGE Property 66/115...
Page 70: Lcd Display Trouble
Check the connection LCD FPCB Connector Check signal flow via EMI filter Charge Pump - 71 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes LG Electronics LGE Property...
Page 71 Signal is normal on Check solder and repair DIF Signal Damaged filter FL401, FL402, FL403 Assemble FL403 FL401 FL402 - 72 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 72: Camera Trouble
C550 C545 C549 0.1u 0.1u U501 RP103K181D-TR-F VOUT CAM_LDO_EN EUSY0355501 R515 C501 C517 100K Check the connector combination - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 73 So, follow Next sequences 1. Remove fault CAM connector with heat gun. 2. Clear PAD 3. Change CAM connector - 74 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 74: Receiver & Speaker Trouble
FM_SND_R BYPASS I2CVDD I2C2_SDA I2C2_SCL HSO_R C322 C323 0.1u 2.2u C324 C325 2.2u 2.2u R319 EAR_GND RCV_SPK_P RCV_SPK_N - 75 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 75 Replace Main Board Good (C313,C314) ? Output Signal is Replace Audio High AMP(U303) (R303,R309)? Assemble - 76 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LG Electronics LGE Property 72/115...
Page 76: Microphone Trouble
C309 C308 L302 100n SPU0410HR5H-PB MAIN_MIC_P SUMY0010609 C311 C310 C306 (1608) R308 VMIC_N C308 L303 MIC301 L301 L302 - 77 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 77 Check mic. Bias line ON?(2.5V) When Call? (L303) MIC Siganl OK? Replace MIC (L301,L302) MIC work Replace PCB properly? Assemble - 78 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 78: Vibrator Trouble
SJMY0008510 R513 VA503 VA502 EUSY0200803 R512 C505 C504 3.9n 240K (1%) VA503 VA502 Check R501 PWM Signal R513 - 79 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 79 Signal (TP2) is Check TP3 & TP4 Check U502 or signal is OK? replace it Replace Vibrator Assemble - 80 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 80: Keypad Back Light Trouble
QWERTY_KEY BACKLIGHT VBAT LD503 R509 LEWWS44PA LD502 R507 LEWWS44PA QWERTY_KEY_BL LD501 R508 LEWWS44PA LD504 R532 LEWWS44PA VA501 ICVN0505X150FR - 81 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 81 Check LD101,LD102, LD501~LD504 Check TP1 or TP2 Replace Q101 or Check Q101 or U201 PMIC(U201) Replace main board Assemble - 82 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 82: Sim & Usd Trouble
Check soldering all pin of socket Pin C1 / 2V9_SIM Pin C7 / SIM_IO Pin C3 / SIM_CLK - 8 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 83 2.9V SIM only Resolder pin 6 pins are soldered well? Replace Main Board Check Proper SIM Card Assemble - 84 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 84 C516 C509 C502 C503 C510 C511 C518 C519 C520 ENSY0023501 Card insert Card eject Card insert Card eject - 85 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 85 TF socket pins TP 1~4 is 2.9V are well soldered Signal) Replace Main Board Check proper uSD? Assemble - 86 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 86: Touch Trouble
U402 I2C1_SDA VDD_REF TOUCH_INT PENIRQ- I2C1_SCL VA404 VA405 VA406 VA407 TSC2007IYZGR EUSY0337101 AXK7L10227G - 87 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes LG Electronics LGE Property 83/115...
Page 87 Replacd Main Board U402 U402 Solder Resolder U402 check Resolder or Replace CN1 Solder check Replacd Main Board - 88 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 88: Trouble Shooting Of Receiver Part
Check point PLL Control Check point Mobile SW & FEM Check point RX I/Q Signal Re-Download S/W & CAL - 89 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 89 0.047uF X601 TSX-3225 GND2 HOT2 HOT1 GND1 26MHZ TP1 (C616) Figure 3. DCXO Cicuit Figure 4. DCXO Waveform - 90 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 90 GND2 HOT2 RF_EN(TP1) HOT1 GND1 26MHZ 26MHZ_BT RF_CLK RF_DA Figure 6. Transceiver Circuit Figure 7. PLL Control Waveform - 91 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 91 Figure 9. Mobile SW & FEM Table 2. FEM RX Control Logic EGSM/GSM850 DCS/PCS Table 2. FEM RX Control Logic EGSM/GSM850 DCS/PCS - 92 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 92 Mobile SW & FEM is OK. Check Antenna. DCS/PCS RX Figure 10 Mobile SW (R403) Figure 11 FEM Control Signals - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 93 Figure 12. RX I/Q Circuit Checking Points TP4(QX TP3(Q TP2(IX) TP1(I) U601 Figure 13. RX I/Q Figure 14. RX I/Q Waveform - 94 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 94: Trouble Shooting Of Transmitter Part
TX I/Q Signal Check point Transceiver Check point PAM Control Check FEM & Mobile Re-Download S/W & RF CAL - 95 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 95 Re-Download S/W and Cal Re-Download S/W and Cal Figure 17. TX I/Q Circuit Figure 17. TX I/Q Circuit - 96 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 96 4. TROUBLE SHOOTING Checking Points TP4(Q TP3( TP2(IX TP1(I) U601 Figure 18. TX I/Q Figure 19. TX I/Q Waveform - 97 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 97 Figure 21. Transceiver Output Table 3. Transceiver Output Operation MODE Transceiver Output GMSK Fixed 8PSK Ramp Burst Control - 98 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98 LBAND_PAM_IN (MODE: 8PSK) : TP1 EGSM 30CH EGSM 30CH Figure 23. Transceiver Output (8PSK) Figure 22. Transceiver Output (GMSK) - 99 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 99 Table 4. PAM Mode Operation MODE MODE PA_LEVEL TXON_PA GMSK Ramp Burst Control HIGH 8PSK HIGH Control Amp bias HIGH - 100 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 100 TP3(PA MODE) TP3(PA MODE) TP3(PA MODE) : R608 TP1(PA_LEVEL) TP1(PA_LEVEL) : R606 TP2(TXON_PA) : R605 TP2(TXON_PA) TP3(PA MODE) - 101 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 101 SW600 TP3_C604 (FE1) FL60 Figure 29 Mobile SW & FEM Table 5. FEM TX Control Logic EGSM/GSM850 DCS/PCS - 102 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 102 Mobile SW & FEM is OK. Check Antenna. EGSM TX TP2(ANT_SW2) TP1(ANT_SW1) Figure 31 FEM Control Signals Figure 30 Mobile SW (R403) - 10 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 116: Block Diagram
VAFC (2.65V) VUSB(3.1V) VVIB(2.8V) MIC2(P/N) B/UP BAT. Figure 1 GT350 Functional block diagram LG Electronics LGE Property 13/115 - 117 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 118: Circuit Diagram
UTXD USB_DP JTAGEN OJ101 OJ102 OJ103 OJ104 R125 R124 F_MODE_ON F_MODE R123 TDO(DBB Out) 100K OJ105 OJ106 _RESET Copyright © 2010 LG Electronics. Inc. All right reserved. - 119 - LGE Internal Use Only Only for training and service purposes...
Page 119 BAT_ID _SLIDE_OPEN C238 C205 C202 C203 C201 R206 CN202 C243 S-5711ACDL-I4T1G KEY_COL7 C204 EUSY0408901 (1%) 100n 100n (1608) LGE Internal Use Only - 120 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 120 2.2u 2V62_VIO C339 0.1u R319 R329 EAR_GND U304 R330 VIN- HOOK_DETECT VIN+ C338 NCS2200SQ2T2G R328 120p EUSY0250501 220K Copyright © 2010 LG Electronics. Inc. All right reserved. - 121 - LGE Internal Use Only Only for training and service purposes...
Page 121 SMZY0023501 KEY_COL2 TOUCH_INT PENIRQ- I2C1_SCL KEY_COL3 2V 10uAh VA404 VA405 KEY_COL4 VA406 VA407 TSC2007IYZGR EUSY0337101 KEY_COL5 KEY_COL6 KEY_COL7 LGE Internal Use Only - 122 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 122 C521 R512 C505 C504 LD501 GCA26D-6S-H18-E1500 R508 220n 3.9n 240K LEWWS44PA ENSY0025101 (1%) LD504 R532 LEWWS44PA VA501 ICVN0505X150FR Copyright © 2010 LG Electronics. Inc. All right reserved. - 123 - LGE Internal Use Only Only for training and service purposes...
Page 123 R612 1V53_VRF 0.047uF 2V85_VRF X601 TSX-3225 GND2 HOT2 HOT1 GND1 26MHZ C613 C618 0.22uF 0.1uF 26MHZ_BT RF_CLK RF_DA LGE Internal Use Only - 124 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 124 2V7_VBT FM_SND_L DUMMY1 SDBTPTR3015 C822 C823 C808 C811 C812 C825 1.5p C805 C813 0.1uF 4.7u 2.2u (1608) (1608) Copyright © 2010 LG Electronics. Inc. All right reserved. - 125 - LGE Internal Use Only Only for training and service purposes...
Page 125 C114 C108 C107 C106 C105 C104 DIF_CD IF_MODE0 R105 C113 C117 DIF_WR DIF_RD DIF_CS LCD_ID DIF_VSYNC KEY_ROW6 GB042-34S-H10-E3000 LGE Internal Use Only - 126 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 126 LCD_BACKLIGHT_EN DIF_RD DIF_D2 DIF_CS LCD_ID DIF_D1 IF_MODE0 DIF_VSYNC KEY_ROW6 DIF_D0 DIF_RESET GB042-34P-H10-E3000 GB042-40P-H10-E3000 Header Header RCV_SPK_P RCV_SPK_N AXK7L10227G Copyright © 2010 LG Electronics. Inc. All right reserved. - 127 - LGE Internal Use Only Only for training and service purposes...
Page 128: Bga Pin Map
8. BGA Pin Map 8. BGA Pin Map Digital Base Band Not Use - 129 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 132: Pcb Layout
Can’t work FM Radio & BT CN403 Main To FPCB Connector No LCD Display U401 Qwerty Key Can’t work Qwerty key GT350_MAIN_SPFY0220001-1.0 (TOP) Copyright © 2010 LG Electronics. Inc. All right reserved. - 133 - LGE Internal Use Only Only for training and service purposes...
Page 133 Can’t make a call FL601 U602 Filter RF(SKY77344) Can’t make a call Can’t make a call GT350_MAIN_SPFY0220001-1.0 (BOT) LGE Internal Use Only - 134 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 138: Engineering Mode
4.00 V 0.000 A 10.2 Calibration Step 2.1. Turn on the Phone. 2.2. Execute “HK_34.exe” - 19 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only LG Electronics LGE Property 106/115 Only for training and service purposes...
Page 139 10.ENGINEERING MODE 2.3. Click “SETTING” Menu GT50 2.4. Setup “Ezlooks” menu such as the following figure - 140 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 140 1. By-Pass: not control by GPIB PWR: Power supply 2. Normal: control by GPIB CELL: Call Test Equipment - 141 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 141 10.ENGINEERING MODE 2.7. Select “MODEL”. 2.8. Click “START” for RF calibration GT50 2.9. RF Calibration finishes. - 142 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 142 TX Channel compensation: EGSM->GSM850->DCS->PCS->EDGE EGSM->EDGE GSM850->EDGE DCS->EDGE RX Channel compensation: EGSM->GSM850->DCS->PCS 4. Phone Operation Mode < Normal Mode > < Ptest Mode> - 14 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 143: Stand Alone Test
Set COM Port. Check PC Baud rate. Confirm EEPROM & Delta file prefix name. - 144 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LG Electronics LGE Property 111/115...
Page 144 11. STAND ALONE TEST Click “Update Info” for communicating Phone and Test-Program. Not Connected Connected - 145 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 145 For the purpose of the Standalone Test, Change the Phone to “ptest mode” and then Click the “Reset” bar. Select “Non signaling” in the Quick Bar menu. Then Standalone Test setup is finished. Change “ptest mood” - 146 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 146: Tx Test
Select “Tx” in the RF mode menu and “PCL” in the PA Level menu. Finally, Click “Write All” bar and try the efficiency test of Phone. - 147 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 147 Select “Tx” in the RF mode menu and “PCL” in the PA Level menu. Finally, Click “Write All” bar and try the efficiency test of Phone. LG Electronics LGE Property 114/115 - 148 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 148: Rx Test
The Phone must be changed “normal mode” after finishing Test. Change the Phone to “normal mode” and then Click the “Reset” bar.\ Change “normal mode “ - 149 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 149 Change the Phone to “normal mode” and then Click the “Reset” bar.\ Change “normal mode “ LG Electronics LGE Property 115/115 - 150 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 150: Exploded View & Replacement
S B P P 0 0 SAEY00 M C J A 0 0 AKAD00 Lo c a t i o n N o. Copyright © 2010 LG Electronics. Inc. All right reserved. - 151 - LGE Internal Use Only Only for training and service purposes...
Page 152: Replacement Parts
COMPLEX, (empty), , , , , COLOR WITHOUT MBJZ01 BUTTON MBJZ0025001 COMPLEX, (empty), , , , , COLOR - 15 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 153 COMPLEX, (empty), , , , , COLOR WITHOUT MPBU00 PAD,CONNECTOR MPBU0095001 COMPLEX, (empty), , , , , COLOR - 154 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 154 LABEL MLAZ0038301 PID Label 4 Array COLOR WITHOUT MLAA00 LABEL,APPROVAL MLAA0062303 COMPLEX, (empty), , , , , COLOR - 155 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 155: Main Component
CAP,CERAMIC,CHIP ECCH0002001 ,[empty] ,[empty] ,[empty] ,[empty] ,.5 mm C104 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C105 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP - 156 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 156 SPEY00 PCB,KEYPAD SPEY0064801 FR-4 ,0.5 mm,BUILD-UP 4 , ,; , , , , , , , , , - 157 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 157 ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C118 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP - 158 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 158 ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C203 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C205 CAP,CHIP,MAKER ECZH0001215 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP - 159 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 159 ECZH0001215 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP C235 CAP,CERAMIC,CHIP ECCH0000198 2.2 uF,6.3V ,M ,X5R ,TC ,1005 ,R/TP - 160 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 160 ECZH0003504 100 nF,25V ,K ,X7R ,HD ,1608 ,R/TP C328 CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP - 161 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 161 7.5 pF,50V ,D ,X7R ,TC ,1005 ,R/TP ,; ,C0G TYPE(No C513 CAP,CERAMIC,CHIP ECCH0010501 X7R) ,[empty] ,[empty] ,[empty] ,[empty] ,[empty] ,[empty] - 162 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 162 7.5 pF,50V ,D ,X7R ,TC ,1005 ,R/TP ,; ,C0G TYPE(No C534 CAP,CERAMIC,CHIP ECCH0010501 X7R) ,[empty] ,[empty] ,[empty] ,[empty] ,[empty] ,[empty] - 16 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 163 ECCH0000122 47 pF,50V,J,NP0,TC,1005,R/TP C609 CAP,CERAMIC,CHIP ECCH0000182 0.1 uF,10V ,K ,X5R ,HD ,1005 ,R/TP C610 CAP,CERAMIC,CHIP ECCH0000122 47 pF,50V,J,NP0,TC,1005,R/TP - 164 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 164 SOT-963 ,5 V,25 W,R/TP , ,; , , , , , ,[empty] ,[empty] ,2P D301 DIODE,TVS EDTY0009801 FB201 FILTER,BEAD,CHIP SFBH0009201 220 ohm,1608 , - 165 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 165 10 Kohm,1/16W ,F ,1005 ,R/TP R105 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP R106 RES,CHIP ERHY0000254 4.7K ohm,1/16W,J,1005,R/TP - 166 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 166 R301 RES,CHIP,MAKER ERHZ0000267 3300 ohm,1/16W ,F ,1005 ,R/TP PCB ASSY,MAIN,PAD R302 SAFP0000401 SHORT PCB ASSY,MAIN,PAD R304 SAFP0000401 SHORT - 167 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 167 240 Kohm,1/16W ,F ,1005 ,R/TP R513 RES,CHIP,MAKER ERHZ0000405 10 Kohm,1/16W ,J ,1005 ,R/TP R514 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP - 168 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 168 820 ohm,1/16W ,F ,1005 ,R/TP R613 RES,CHIP ERHY0000132 22K ohm,1/16W,F,1005,R/TP S501 CONN,SOCKET ENSY0022201 24 ,ETC , , mm,7*7, 1.3M (1/5") Socket Type - 169 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 169 SLP1006P2 ,5 V,100 W,R/TP ,1.0x0.6x0.5t ,; , , , , , DIODE,TVS EDTY0009601 ,[empty] ,[empty] ,[empty] ,[empty] SAFD00 PCB ASSY,MAIN,SMT TOP SAFD0140601 - 170 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 170 ECCH0000117 27 pF,50V,J,NP0,TC,1005,R/TP C422 CAP,CERAMIC,CHIP ECCH0000117 27 pF,50V,J,NP0,TC,1005,R/TP C423 CAP,CERAMIC,CHIP ECCH0000117 27 pF,50V,J,NP0,TC,1005,R/TP C424 CAP,CERAMIC,CHIP ECCH0000117 27 pF,50V,J,NP0,TC,1005,R/TP - 171 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 171 40 PIN,0.4 mm,ETC , ,H=1.0, Socket BOARD FB701 FILTER,BEAD,CHIP SFBH0008101 600 ohm,1005 , FB702 FILTER,BEAD,CHIP SFBH0008101 600 ohm,1005 , - 172 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 172 470 ohm,1/16W ,J ,1005 ,R/TP R414 RES,CHIP,MAKER ERHZ0000484 470 ohm,1/16W ,J ,1005 ,R/TP R415 RES,CHIP,MAKER ERHZ0000484 470 ohm,1/16W ,J ,1005 ,R/TP - 17 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 173 5.5 V, ,SMD ,1005, 50pF VA408 VARISTOR SEVY0005201 5.5 V, ,SMD ,1005, 50pF VA409 VARISTOR SEVY0005201 5.5 V, ,SMD ,1005, 50pF - 174 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 174 12. EXPLODED VIEW & REPLACEMENT PART LIST Location Level Description Part Number Spec Color Remark VA501 VARISTOR SEVY0004101 5.6 V, ,SMD ,360pF, 1005 - 175 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 175: Accessory
100-240V ,5060 Hz,5.1 V,0.7 A,CE ,STA-U12ED, SSAD00 ADAPTOR,AC-DC SSAD0031001 Europe, Cableless ,; , ,5.1 ,0.7 , , ,WALL 2P ,USB , - 176 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

LG GT350 Service Manual

1 Introduction

2 Performance

3 Technical Brief

4 Trouble Shooting

5 Download

6 Block Diagram

7 Circuit Diagram

8 BGA Pin Map

9 Pcb Layout

10 Engineering Mode

11 Stand Alone Test

12 Exploded View & Replacement

Part List

Quick Links

Troubleshooting

Related Manuals for LG GT350

Summary of Contents for LG GT350

Table of Contents