Page 1 Internal Use Only Service Manual GD350 Date: JANUARY, 2010 / Issue 1.0...
Page 2: Table Of Contents
4.7 LCD Trouble ..................82 12.2 Replacement Parts..............141 4.8 Camera Trouble ................86 12. Accessory ................... 158 4.9 Speaker Trouble ................90 - - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 4: Introduction
Therefore, note that unauthorized alternations or repair may affect the regulatory status of the system and may void any remaining warranty. 4/140 - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 5 • When returning system boards or parts like EEPROM to the factory, use the protective package as described. 5/140 - 6 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 6: Abbreviations
International Portable User Identity Intermediate Frequency Liquid Crystal Display Low Drop Output Light Emitting Diode OPLL Offset Phase Locked Loop 6/140 - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 7 UART Universal Asynchronous Receiver/Transmitter Voltage Controlled Oscillator VCTCXO Voltage Control Temperature Compensated Crystal Oscillator Wireless Application Protocol 7/140 - 8 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 8: Performance
EAR Phone Jack PC Synchronization Speech coding EFR/FR/HR Data and Fax Vibrator Loud Speaker Voice Recoding Microphone 8/140 - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 9 SW MIDI (Mono SPK) Camera 2.0M FF Bluetooth / FM Radio Bluetooth version 2.1 / 76~108MHz supported 9/140 - 10 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 10: Technical Specification
Toler. 30dBm 14dBm 28dBm 12dBm 26dBm 10dBm 24dBm 8dBm 22dBm 6dBm 20dBm 4dBm 18dBm 2dBm 16dBm 0dBm 10/140 - 11 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 11 GSM850/ EGSM Offset from Carrier (kHz). Max. dBm Output RF Spectrum (due to switching transient) 1,200 1,800 11/140 - 12 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 12 11 3 dB Frequency (Hz) Max.(dB) Min.(dB) 1,000 Sending Response 2,000 3,000 3,400 4,000 4 3 dB (middle volume) 12/140 - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 13 At least 55 dBspl under below conditions: Ringer Volume 1. Ringer set as ringer. 2. Test distance set as 1 m 13/140 - 14 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 14 Battery full charge voltage = 4.2 V Capacity: 800mAh Switching-mode charger Travel Charger Input: 100 ~ 240V, 50/60 Hz Output: 5.1V, 700mA 14/140 - 15 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 15: Technical Brief
3.1 Baseband Processor Introduction Figure. 3.1.1 X-Gold tm 213 Hardware Block Diagram Figure. 3.1.1 X-Gold tm 213 Hardware Block Diagram 15/140 - 16 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 16 • Security: – OMTP TR0 – Secure Boot – RSA(ROM)/SHA-1(HW accel.) – OCDS disabling – Certificate Management 16/140 - 17 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 17: External Memory
• USB2.0 up to 480 Mbit/s (High Speed) w/ external USB Phy over ULPI interface • Stereo Headset (Amplifier integrated) • 3 external analog measurement PIN’s • Bluetooth 17/140 - 18 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 18: Sub Display
– 115 LEDs (5x23 LEDs) – RED Color – Display Surface : 7.5 mm x 27.9 mm 18/140 - 19 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 19: Main Lcd Display
– FM synthesizer • AMR-WB • True ring tones (MP3) • MP3, eAAC+ • G.722 SB-ADPCM encoding/decoding 19/140 - 20 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 20: Power Management
100mA. That is the load current estimated for the GSM talk mode. 20/140 - 21 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 21 The RF module has implemented several LDO’s for different RF Power domain. The mixed signal module has some LDO’s for the audio driver and microphone supply. 21/140 - 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. TECHNICAL BRIEF Table. 3-2-1 Power supply Domains (without RF) 22/140 - 2 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 23 DCXO etc.) and controlled by the VCXO_enable signal. The reason for the startup is stored in the ResetSourceRead register. Battery Measurement 23/140 - 24 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 24 If the charger unit is running the ADC is controlled by the charger state-machine Figure.3.2.1 First Part of the State Machine, Running in Different Power Domains than the Second Part 24/140 - 25 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 25 3. TECHNICAL BRIEF Figure 3.2.2 Second (Main) Part of the Startup State Machine in the VPMU Domain 25/140 - 26 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 26 This is important, especially in half/full-wave charging where the charger detection is switching between charger detected/not detected according the AC supply frequency. reasons 26/140 - 27 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 27 This allows to power up the LCORE core regulator and wait for the core to reach reset state before powering up the I/O supply regulators. 27/140 - 28 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 28 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF Figure 3.2.3 Start Up Sequence (triggered by First Connect Event) 28/140 - 29 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 29 In testmode signal reset_pmu_n_o is high, that means the chip reset is fully controlled from external 29/140 - 0 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 30 PMU state-machine is high, vcxo_enable controls the rf_sysclk_en signal to the RF. If rf_sysclk_en_pmu is low, the DXCO is switched off, independent from vcxo_enable. 30/140 - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 31 That means all PMU register are reset in OFF state. For details about the SW reset see chapter External Reset Handling 31/140 - 2 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32 Before switching OFF the software shall have enabled the 32 kHz oscillator and has switched the PMU clock to the 32 kHz clock to archive the target OFF current 32/140 - - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 33: Fem With Integrated Power Amplifier Module
PHEMT RF switch. The GaAs die, PHEMT die, Silicon (Si) die and passive components are mounted on a multi-layer laminate substrate. The assembly is encapsulated with plastic overmold. 34/140 - 4 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34 Figure 3.3.2 Band SW Logic Table Figure 3.3.3 FEM CIRCUIT DIAGRAM Figure 3.3.3 FEM CIRCUIT DIAGRAM 35/140 35/140 - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 35: Crystal(26 Mhz, X100)
This predistortion is performed by the linearization unit for crystal oscillator (LUXO). The LUXO calculates the corresponding DIG value according to the given AFC value. 36/140 - 6 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 36: Rf Subsystem Of Pmb8810 (U100)
GSM850 or EGSM900, and one high band, DCS1800 or PCS1900. A block diagram of the RF subsystem is given in Figure 3-4-1. 37/140 - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 37: Functional Description
DC offset removal and programmable gain control. Figure. 3.5.2 RECEIVER CHAIN BLOCK DIAGRAM 38/140 - 8 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 38 The 26 MHz reference signal of the phase detector incorporated in the PLL is provided by the reference oscillator. 39/140 - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 39 A minor set of power amplifiers require a bias voltage to enhance power efficiency. Support of this power amplifiers is achieved by the implemented bias DAC. Figure. 3.5.4 PA AND FEM CONTROL BLOCK DIAGRAM 40/140 - 40 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 40 One embedded direct-to-battery LDO provides the 2.5 V supply voltage for the remaining circuits. Figure. 3.5.5 POWER SUPPLY BLOCK DIAGRAM 41/140 - 41 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 41: Memory(Pf8F5060M0Y0Be, U101)
(legacy-latching) on some litho/density combinations and up to 133 MHz using CLK address-latching only on some litho/density combinations. It is listed below in the following table. 42/140 - 42 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 42 • Deep Power-Down (DPD) mode: DPD provides the lowest power consumption and is enabled by programming in the Enhanced Configuration Register. DPD is initiatied by asserting the DPD pin. 43/140 - 4 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 44: Receiver Path
Bluetooth function is integrated close to the celluar transmitter, minimal external filtering is required to eliminate the desensitization of The receiver by the cellular transmit signal. 45/140 - 45 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 45: Sim Card Interface
This signal is interface datum. SIM_CLK This signal is transferred to SIM card. SIM_DATA This signal is interface datum. 46/140 46/140 - 46 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46: Lcd Interface
In combination with the vertical arrangement of the sub-pixels, the LH200J07-TH02 characteristics provide an High quality display for mobile phone application. 47/140 - 47 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 47 The two LDOs can be enabled when the device is in sleep mode. Total current reduces to 0.1 in shutdown. 48/140 - 48 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 48 4.0mA or less. This feature results in higher efficiency under light-load conditions. Further reduction in quiescent current will result from using fewer than four LEDs. 49/140 - 49 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 49: Battery Charger Interface
90mA or 400mA through one wire interface. The MAX8922 is available in the tiny 10pin 2mm by 3mm TDFN package. 50/140 - 50 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50: Keypad Interface
3. TECHNICAL BRIEF 3.11 Keypad Interface 3.11 Keypad Interface Figure 3-11-1 MAIN KEY STRUCTURE 51/140 Figure 3-11-1 MAIN KEY STRUCTURE - 51 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 51 (or key combination) that was pressed and how long it was pressed. Figure 3-11-3 Block Diagram and System Integration of the KPD 52/140 - 52 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 52: Audio Front-End
• Analog part The following figure shows an architecture overview of the Audio section. Figure 3.12.1 Audio Section Overview 53/140 - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 53 • The high-pass functions of the voiceband filters have to be implemented in firmware on TEAKLite®. 54/140 54/140 - 54 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 54 Loudspeaker driver, b) one mono, differential Earpiece driver and c) one stereo, single-ended (with uni- or bipolar signals), Headset driver. 55/140 - 55 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 55 The buffers are designed to be short circuit protected. Figure 3.12.3 Switching for R/L DACs onto Buffers 56/140 - 56 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 56 To improve SNR the sample frequency can be doubled in dedicated modes and the modulated data stream is 4MHz instead of 2 MHz. 57/140 - 57 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 57 VMIC can be used for supplying this microphone. Figure 3.12.5 Typical Microphone Supply Generation (alternative) Figure 3.12.5 Typical Microphone Supply Generation (alternative) 58/140 - 58 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 58: Camera Interface(2M Fixed Focus Camera)
Programming is done by register read/write transactions using an AHB slave interface. Figure 3.13.1 Block Diagram of Camera Interface Figure 3.13.1 Block Diagram of Camera Interface 59/140 59/140 - 59 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 59 • Color processing (contrast, saturation, brightness, hue) • Power management by software controlled clock disabling of currently not needed sub-modules 60/140 - 60 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 60: Key Baclklight Led Interface
KEY_BL_EN is operating PWM. It is reducing current consumption. Figure 3-14-1 Key Backlight Block Figure 3-14-1 Key Backlight Block 61/140 61/140 - 61 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 61: Vibrator Interface
It is capable to driver the vibrator motor up to 150mA Figure 3-15-1 Vibrator Driver Block Diagram Figure 3-15-2 Vibrator Driver Block 62/140 - 62 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 62: Folder Sw Interface
A little magnet attached to the folder. If folder is opened, Hall sensor is ON. Therefore, to see whether the opening of the folder. Figure 3-16-1 Hall effect switch Block Diagram 63/140 - 6 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 63: Sub Display (Led Module) Sw Interface
- Pitch between dots : 1.2mm Figure 3-17 LED Module Interface Figure 3-17 LED Module Interface 64/140 64/140 - 64 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 64: Trouble Shooting
Figure 4.1 Memory(512NOR/128pSDRAM) U101 PF38F5060M0Y3DF U100 (PMB8810) Main Chip (A-GOLDRADIO) U300 FEM(Tx Module) X100 Crystal, 26MHz Clock 66/140 66/140 - 65 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 65: Rx Trouble
Crystal Circuit (2) Check Mobile SW &TX module (3) Check PLL Control Re-download SW or Do calibration again 67/140 - 66 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 66 X100 #1 pin : 26MHz Figure 4.2.1 CIRCUIT WAVEFORM 1 pin 1Pin Figure 4.2.2 Figure 4.2.3 68/140 68/140 - 67 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 67 Replace FEM (U300) Signal is OK ? EGSM Rx Mobile SW & TX Module is OK. 69/140 69/140 - 68 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68 4. TROUBLE SHOOTING TEST POINT TX EN VLOGIC Figure 4.2.4 CIRCUIT CONTROL LOGIC EGSM Rx VLOGIC Tx_EN 70/140 70/140 - 69 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 69: Tx Trouble
Crystal Circuit (2) Check Mobile SW &FEM (3) Check PLL Control Redownload SW or Do calibration again 71/140 - 70 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 70 X100 #1 pin : 26MHz Figure 4.3.1 CIRCUIT WAVEFORM 1 pin 1Pin Figure 4.3.3 Figure 4.3.2 72/140 72/140 - 71 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 71 ReplaceFEM (U300) TP5 signal same Replace SW300 as TP1? EGSM Tx Mobile SW & FEM is OK. 73/140 73/140 - 72 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 72 4. TROUBLE SHOOTING TEST POINT TX EN VLOGIC Figure 4.2.4 CIRCUIT CONTROL LOGIC EGSM Rx VLOGIC Tx_EN 74/140 74/140 - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 73: Power On Trouble
Is the phone power on? Does it work properly? The phone will Replace the main board Properly operating. 75/140 - 74 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 74 4. TROUBLE SHOOTING TEST POINT VMMC VCORE VDDMS VDDXO VDDTDC U100 VRTC VPMU VAUX VUSB VDD_VRF2 Figure 4.1 76/140 - 75 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 75 4. TROUBLE SHOOTING CIRCUIT Figure 4.2 power block of GD350 Figure 4.2 power block of GD350 75/140 75/140 - 76 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 76: Charging Trouble
Pin 1 of MAX8922ETD = 5.1V ? Change the TA Battery is charged? Replace the main board Charging is properly operating 78/140 - 77 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 77 4. TROUBLE SHOOTING 4. TROUBLE SHOOTING TEST POINT VBAT LDO_OUT Figure 4.5 CIRCUIT 79/140 - 78 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 78: Vibrator Trouble
Pin41(+) high? Is the voltage at VB100 Replace Main FPCB (+) high? Replace vibrator Vibrator Working well ! 80/140 - 79 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 79 4. TROUBLE SHOOTING 4. TROUBLE SHOOTING TEST POINT Vibrator PAD CN101 CN203 Figure 4.6 81/140 - 80 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 80 4. TROUBLE SHOOTING 4. TROUBLE SHOOTING CIRCUIT Main IC (U100) Main (U100) 80/140 - 81 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 81: Lcd Trouble
Data pins on CN103 ? Does LCD work Replace LCD module properly ? LCD working well ! 83/140 - 82 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 82 4. TROUBLE SHOOTING 4. TROUBLE SHOOTING TEST POINT FL204 FL205 FL206 CN203 R233 U203 C242 CN101 CN103 Figure 4.7 84/140 - 8 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 84 LCD_RS LCD_RS LCD_CS LCD_CS LCD_WR LCD_WR Graph 4.7.2. LCD Data Waveform Graph 4.7.2. LCD Data Waveform 84/140 84/140 - 85 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 85: Camera Trouble
(FL201, FL202) Does Camera work Replace U100 or Change the board properly ? Camera working well ! 87/140 - 86 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 86 4. TROUBLE SHOOTING 4. TROUBLE SHOOTING TEST POINT C246 C247 C248 C245 U203 CN204 FL202 FL201 C244 Figure 4.8 88/140 - 87 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 88 Graph 4.8.2. MCLK Waveform CAM_HSYNC CAM_VSYNC 26MHz CAM_HSYNC CAM_PCLK Graph 4.8.3.CAM_VSYNC vs. Graph 4.8.4.CAM_HSYNC vs. CAM_HSYNC Waveform CAM_PCLK Waveform 88/140 - 89 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 89: Speaker Trouble
Replace/Change the U200 FB200,FB201 FB200,FB201 Speaker Speaker Working well!! Working well!! Speaker Speaker Working well!! Working well!! 91/140 91/140 - 90 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 90: Only For Training And Service Purposes
4. TROUBLE SHOOTING 4. TROUBLE SHOOTING TEST POINT FB200 FB201 U200 C226 C224 C225 U202 C223 Figure 4.11.1 CIRCUIT 92/140 - 91 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 91: Earphone Trouble
Change the U200 & U100 the earphone? and try again Earphone will work properly Earphone will work properly 93/140 93/140 - 92 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 92 TEST POINT FB203 FB200 FB204 FB201 CN201 CN201 C209 U200 C211 C226 C224 C225 U202 R218 C223 CIRCUIT 94/140 - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 94: Receiver Trouble
Replace/Change the U202 FB200 and FB201 Fluctuate? Resolder/Change the Is receiver connected receiver Properly? Receiver will work properly. 95/140 - 95 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 95 4. TROUBLE SHOOTING 4. TROUBLE SHOOTING TEST POINT FB200 FB201 U200 C225 U202 C223 Figure 4.11 CIRCUIT 96/140 - 96 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 96: Microphone Trouble
Is it a few tens mV AC? Check the soldering of Resolder component C260, C261 Microphone will work properly. 97/140 - 97 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 97 4. TROUBLE SHOOTING 4. TROUBLE SHOOTING TEST POINT C260 MIC200 C261 C258 Figure 4.12 CIRCUIT U100 98/140 - 98 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98: Sim Card Interface Trouble
And try again. Does it work Properly? Properly? SIM card is properly SIM card is properly working working. 99/140 - 99 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 99 4. TROUBLE SHOOTING TEST POINT PIN 6 PIN 4 J100 2V85_VSIM PIN 3 PIN 1 Figure 4.13 CIRCUIT 100/140 - 100 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 100: Key Backlight Trouble
Check the soldering Working? each R and LED Backlight will work Replace or resolder properly. component CIRCUIT 101/140 - 101 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 101 Main -BOTTOM #3 pin of Q200 TEST POINT LD203 LD202 Main - TOP LD200 LD201 Figure 4.14 102/140 - 102 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 102: Micro Sd (Usd) Trouble
Check out MC_CLK & Re-download SW Data Timing OK? Replace Micro SD Card Micro SD Card will work properly 103/140 - 10 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 103 TEST POINT S100 uSD_DET VMMC Figure 4.15 CIRCUIT 1V81_VDD VMMC uSD_D1 uSD_D0 uSD_CLK uSD_CMD uSD_D3 uSD_D2 uSD_DET 104/140 - 104 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 104: Bluetooth Trouble
VAUX at C317 U100 1V8_VDD at C316 Replace CLK32K U100 Replace Check BT_CLK U100 BT will work properly 105/140 105/140 - 105 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 105 4. TROUBLE SHOOTING 4. TROUBLE SHOOTING TEST POINT 1V8_VDD BT_CLK VAUX L301 CLK32K L305 Ant303 CIRCUIT 106/140 106/140 - 106 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 106: Fm Radio Trouble
A condition is good? Replace U100 A condition is good? FM_radio will work properly FM_radio will work properly 107/140 107/140 - 107 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 107 VBAT HSO_L C213 L201 U200 HSO_R HSO_L C214 VDD_FMR C213 CIRCUIT C214 VDD_FMR CIRCUIT U100 U100 108/140 - 108 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes 108/140...
Page 109: Folder On/Off Trouble
Replace U100 on FPCB Voltage at pin 1 of U100 on FPCB = 0V Folder on/off will work properly 109/140 - 110 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 110 4. TROUBLE SHOOTING TEST POINT #1 pin #4 pin U100 #2 pin #3 pin Figure 4.18 CIRCUIT 110/140 - 111 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 111: Led Module Trouble
MUIC Replace U100 A condition is good? Replace LED Module LED Module Working well ! 111/140 - 112 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 112 4. TROUBLE SHOOTING 4. TROUBLE SHOOTING TEST POINT CN101 CN102 Figure 4.19 CIRCUIT 112/140 - 11 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 113: Download
5p -USB Cable 5p μ-USB Cable Figure 5-1. S/W download & upgrade setup Figure 5-1. S/W download & upgrade setup - 114 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 114: Download Program User Guide
5.2 Download program user guide 1. After “GSMULTI” folder copy, paste C:\ 2. “MultiGSM.exe” execution file execute GD50 GD50 GB230 GB230 - 115 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 115: Flashtool Program Setting
5.3 Multi-Download Program Setting (Model-Base) Multi-Download Program Execution ? Setting : Configuratio Setting Completed GB230 GD50 GD50 GB230 LGE Internal Use Only - 116 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 116 5. DOWNLOAD 5. DOWNLOAD Stand-by Condition: “Wait phone connecting” confirm -> Phone connection GB230 GD50 GD50 GB230 Copyright © 2010 LG Electronics. Inc. All right reserved. - 117 - LGE Internal Use Only Only for training and service purposes...
Page 117: Block Diagram
6. BLOCK DIAGRAM 6.Block Diagram 6. BLOCK DIAGRAM 6. Block Diagram 116/140 LGE Internal Use Only - 118 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 118: Circuit Diagram
7. CIRCUIT DIAGRAM 1V81_VDD VMMC uSD_D1 uSD_D0 uSD_CLK uSD_CMD uSD_D3 uSD_D2 uSD_DET Copyright © 2010 LG Electronics. Inc. All right reserved. - 119 - LGE Internal Use Only Only for training and service purposes...
Page 122: Bga Pin Map
8. BGA PIN MAP (Top View) 8.1 BGA IC pin check (U101) Ball Diagram (Top View), PMB8810(A-GOLDRADIO+) : not in use 122/140 - 12 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 123 8. BGA IC Pin MAP 8.2 BGA IC pin check (U100) Ball Diagram (Top View), PF38F5060M0Y3DF : not in use 123/140 - 124 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 124: Pcb Layout
KB212 KB211 KB222 KB223 KB201 KB205 KB210 KB208 KB209 KB215 KB217 KB216 KB220 KB218 KB219 LD200 LD201 GD350_MAIN_SPFY0211001_1.0_TOP Copyright © 2010 LG Electronics. Inc. All right reserved. - 125 - LGE Internal Use Only Only for training and service purposes...
Page 125 S100 (μ-SD Connector) - No μ-SD Operation U300 (PAM) - No Call MIC200 (Main Mic) - No Mic Operation GD350_MAIN_SPFY0211001_1.0_BTM LGE Internal Use Only - 126 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 126 U100 (Hall IC) - No Folder Operation CN103 (LCD Connector) CN103 - No LCD Display L100 D103 CN100 GD350_F_LCD_SPCY0199701_1.1_TOP Copyright © 2010 LG Electronics. Inc. All right reserved. - 127 - LGE Internal Use Only Only for training and service purposes...
Page 127 - No LED Display BAT100 (Backup Battery) - No RTC without Battery CN102 (LED Module Connector) - No LED Display GD350_F_LCD_SPCY0199701_1.1_BOT LGE Internal Use Only - 128 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 130: Engineering Mode
[6-9] FM Radio [3-7] MemAllUse [6-9-1] FM Radio Test [3-8] MemDetUse [3-9] MemDump [3-10] Change Frequency Band 129/148 - 11 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 131: Auto Calibration
ShieldBox_DllD.dll HK_40 Model KF300d Spec_GD350_001 Setup_Cal_Parameter_001 script_001 PwrSupply_Cmd Procedure_GD350_001 Ezlooks AutoSetup_GD350_001 xmm2130_eep008.cfg LG_RfTest_E5515C_122.dll LG_RfCal_InfiKE000Ag_177.dll dwdio.dll LG_UI_Ad6500_004.dll Multi_HK 130/148 - 12 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 132: Description Of Basic File
-. Spec_GD350_001.xml : Definition Module of Auto Test Spec -. Setup_Cal_Parameter_001.xml : Calibration Definition Module. -. Setup_Cal_Parameter_001.xml : Calibration Definition Module. 131/148 131/148 - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 133: Procedure
6. Connect as Fig 11-2 (RS232 serial cable is connected between COM port of PC, in general.) 7. Run HK_40exe to start calibration. 8. Click “ Logic Operation” of “SETTING” menu bar 132/148 - 14 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 134 10. Select “ LOGIC MODE” that you want Logic mode: 1-> Calibration only 2-> Auto test only 3-> Cal & Auto 133/148 - 15 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 135 11. AUTO CALIBRATION 11. Select the model name “GD350” Model name Start button 12. Click “start” button 134/148 134/148 - 16 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 136: Agc
PCS 1900 Frequency 1850.2 MHz 1880 MHz 1909.8 MHz Max power 30 dBm 30 dBm 30 dBm 135/148 135/148 - 17 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 138: Exploded View & Replacement Part List
12. EXPLODED VIEW & REPLACEMENT PART LIST 12.1 EXPLODED VIEW Copyright © 2010 LG Electronics. Inc. All right reserved. - 139 - LGE Internal Use Only Only for training and service purposes...
Page 140: Replacement Parts
MHFD0015701 CASTING, STS, , , , , Color MCJN00 COVER,REAR MCJN0111401 MOLD, PC LUPOY SC-1004A, , , , , SILVER - 141 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 141 MBIB0010701 MOLD, PC LUPOY SC-1004A, , , , , COLOR GENUINE MBJL00 BUTTON,SIDE MBJL0102701 COMPLEX, (empty), , , , , GOLD - 142 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 142 MCCF0066301 COMPLEX, (empty), , , , , COLOR MCJN00 COVER,REAR MCJN0110001 MOLD, PC LUPOY SC-2302, , , , , BLACK - 14 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 143 MLAZ00 LABEL MLAZ0038301 PID Label 4 Array COLOR WITHOUT SC200 CAN,SHIELD MCBA0059201 PRESS, STS, , , , , COLOR - 144 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 144: Main Component
22 ohm,1/16W ,J ,1005 ,R/TP R101 RES,CHIP ERHY0003301 100 ohm,1/16W ,J ,1005 ,R/TP U100 EUSY0362601 SSON004 ,4 ,R/TP ,Hall IC ,; ,IC,CMOS - 145 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 145 ECZH0001215 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP C110 CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP - 146 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 146 ECCH0000115 22 pF,50V,J,NP0,TC,1005,R/TP C139 CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C141 CAP,CERAMIC,CHIP ECCH0000115 22 pF,50V,J,NP0,TC,1005,R/TP - 147 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 147 ECZH0003503 1 uF,25V ,K ,X5R ,HD ,1608 ,R/TP C221 CAP,CHIP,MAKER ECZH0001215 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP - 148 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 148 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP C252 CAP,CHIP,MAKER ECZH0001215 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP C254 CAP,CERAMIC,CHIP ECCH0000117 27 pF,50V,J,NP0,TC,1005,R/TP - 149 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 149 ECCH0000198 2.2 uF,6.3V ,M ,X5R ,TC ,1005 ,R/TP C315 CAP,CERAMIC,CHIP ECCH0000155 10 nF,16V,K,X7R,HD,1005,R/TP C316 CAP,CERAMIC,CHIP ECCH0000155 10 nF,16V,K,X7R,HD,1005,R/TP - 150 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 150 DFN-2 ,7.82 V,150 mW,R/TP ,PB-FREE D204 DIODE,TVS EDTY0008606 DFN-2 ,7.82 V,150 mW,R/TP ,PB-FREE D205 DIODE,TVS EDTY0008606 DFN-2 ,7.82 V,150 mW,R/TP ,PB-FREE - 151 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 151 100 nH,J ,1608 ,R/TP ,chip coil L204 INDUCTOR,CHIP ELCH0003842 100 nH,J ,1005 ,R/TP ,MLCI L302 INDUCTOR,CHIP ELCH0003826 3.3 nH,S ,1005 ,R/TP ,chip - 152 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 152 100 Kohm,1/16W ,J ,1005 ,R/TP R115 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP R116 RES,CHIP,MAKER ERHZ0000443 2200 ohm,1/16W ,J ,1005 ,R/TP - 15 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 153 47 ohm,1/16W ,J ,1005 ,R/TP R214 RES,CHIP,MAKER ERHZ0000483 47 ohm,1/16W ,J ,1005 ,R/TP R215 RES,CHIP,MAKER ERHZ0000405 10 Kohm,1/16W ,J ,1005 ,R/TP - 154 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 154 110 ohm,1/16W ,J ,1005 ,R/TP R306 RES,CHIP,MAKER ERHZ0000408 110 ohm,1/16W ,J ,1005 ,R/TP R309 RES,CHIP,MAKER ERHZ0000434 1 ohm,1/16W ,J ,1005 ,R/TP - 155 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 155 SEVY0005402 5.6 V, ,SMD ,1005 Siez , 50pF VA231 VARISTOR SEVY0005402 5.6 V, ,SMD ,1005 Siez , 50pF - 156 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 156 FR-4 ,0.8 mm,STAGGERED-8 , ,; , , , , , , , , , SMZY00 MODULE,ETC SMZY0017801 1GB / MICROSD / MLC 1 DIE ,; ,Module Assembly - 157 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 157: Accessory
100-240V ,5060 Hz,5.1 V,.7 A,ANATEL ,Cableless TA ,; ADAPTOR,AC-DC SSAD0036102 ,90Vac~264Vac ,5.1Vdc ,0.7A ,5060 ,- ,WALL 2P ,USB ,- - 158 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

LG gd350 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 Auto Calibration

12 Exploded View & Replacement Part List

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