Page 1 Internal Use Only Service Manual GX300 Date: May, 2010 / Issue 1.0...
Page 2: Table Of Contents
12.2 Replacement Parts ............165 4.8 LCD Trouble ................91 12. Accessory .................189 4.9 Camera Trouble ..............95 4.10 Speaker Trouble ............101 - - 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. 5/158 - 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. 6/158 - 6 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 6: Abbreviation
International Portable User Identity Intermediate Frequency Liquid Crystal Display Low Drop Output Light Emitting Diode OPLL Offset Phase Locked Loop 7/158 - 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 8/158 - 8 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 8: Performanc
EAR Phone Jack PC Synchronization Speech coding EFR/FR/HR/AMR Data and Fax Vibrator Loud Speaker Voice Recoding Microphone 9/158 - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 9 Travel Adapter MIDI SW MIDI (Mono SPK) Camera Bluetooth / FM Radio Bluetooth version 2.1 / 76~108MHz supported 10/158 - 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 11/158 - 11 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 11 6,000 EGSM Offset from Carrier (kHz). Max. dBm Output RF Spectrum (due to switching transient) 1,200 1,800 12/158 - 12 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 12 8 3 dB Frequency (Hz) Max.(dB) Min.(dB) 1,000 Sending Response 2,000 3,000 3,400 4,000 2 3 dB 13/158 - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 13 At least 65 dBspl under below conditions: Ringer Volume 1. Ringer set as ringer. 2. Test distance set as 50 cm 14/158 - 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: 1,500mAh Switching-mode charger Travel Charger Input: 100 ~ 240V, 50/60 Hz Output: 5.1V, 700 mA 15/158 - 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 GX300 Functional Block Diagram The functional component arrangement is mentioned below diagram. Figure. 3.1.1 GX300 Functional Block Diagram 16/158 - 16 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 16: Digital Main Processor (Pmb8810, U102/U402)
3. TECHNICAL BRIEF TECHNICAL BRIEF 3.2 Digital Main Processor (PMB8810, U102/U402) Figure. 3.2.1 X-Gold tm 213 Hardware Block Diagram 17/158 - 17 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 17 • Security: – OMTP TR0 – Secure Boot – RSA(ROM)/SHA-1(HW accel.) – OCDS disabling – Certificate Management 18/158 - 18 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 18: External Memory
• Stereo Headset (Amplifier integrated) • 3 external analog measurement PIN’s • Bluetooth, A-GPS, WLAN support (I2C, I2S, SPI) 19/158 - 19 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 19: Power Management
– USB charging spec 1.0 compliant • Backlight – Up to 4 serial white LEDs (integrated LDO) 20/158 - 20 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 20 – FM synthesizer • AMR-WB • True ring tones (MP3) • MP3, eAAC+ • G.722 SB-ADPCM encoding/decoding 21/158 - 21 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 21: Power Management
100mA. That is the load current estimated for the GSM talk mode. 22/158 - 22 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 22 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. 23/158 - 2 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 23 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF Table. 3.3.1 Power supply Domains (without RF) 24/158 - 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 25/158 - 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.3.3.2 First Part of the State Machine, Running in Different Power Domains than the Second Part 26/158 - 26 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 26 3. TECHNICAL BRIEF Figure 3.3.3 Second (Main) Part of the Startup State Machine in the VPMU Domain 27/158 - 27 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 27 HPBG on state and the system starts. This state change is indicated to the charger state-machine to enable the charger watchdog for safety 28/158 - 28 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 28 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. 29/158 - 29 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 29 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF Figure 3.3.4 Start Up Sequence (triggered by First Connect Event) 30/158 - 0 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 30 In testmode signal reset_pmu_n_o is high, that means the chip reset is fully controlled from external 31/158 - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 31 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. 32/158 - 2 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32 That means all PMU register are reset in OFF state. For details about the SW reset see chapter External Reset Handling 33/158 - - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 33 PMU clock to the 32 kHz clock to archive the target OFF current 34/158 - 4 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34: 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. 35/158 - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 35 2. RX1, RX2, RX3, and RX4 are broadband receive ports and each supports the GSM850, GSM900, DCS, and PCS bands. Table 3.4.1 Band SW Logic Table Figure 3.4.2 FEM CIRCUIT DIAGRAM Figure 3.4.2 FEM CIRCUIT DIAGRAM 36/158 - 6 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 36: Crystal(26 Mhz, X100, X401)
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. 37/158 - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 37: Rf Subsystem Of Pmb8810 (U102, U402)
The system can be configured to support one low band, GSM850 or EGSM900, and one high band, DCS1800 or PCS1900. A block diagram of the RF subsystem is given in Figure 3-6-1. 38/158 - 8 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 38: Functional Description
DC offset removal and programmable gain control. Figure. 3.6.2 RECEIVER CHAIN BLOCK DIAGRAM 39/158 - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 39 The 26 MHz reference signal of the phase detector incorporated in the PLL is provided by the reference oscillator. 40/158 - 40 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 41 One embedded direct-to-battery LDO provides the 2.5 V supply voltage for the remaining circuits. Figure. 3.6.5 POWER SUPPLY BLOCK DIAGRAM 42/158 - 42 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 42: Memory
And 1 DPRAM is used to communicate between 2 Main Memory(NOR+pSRAM). 3.7.1 Main memory (PF38F6066M0Y3DE, U100 / PF38F3050M0Y3DE,U401 ) Figure. 3.7.1 MAIN MEMORY BLOCK DIAGRAM 43/158 - 4 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 43 • 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. 44/158 - 44 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 44 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF 3.7.2 GX300 SIM1 Part Main Memory (PF38F6066M0Y3DE, U100) P_CRE WAIT_ P_LB_ P_UB_ P_CE1_ ADQ0 ADQ1 ADQ2 ADQ3 ADQ4 AVD_ ADQ5 ADQ6 F1_CE_ ADQ7 ADQ8 F_RST_ ADQ9 F_WP_P_CE2 ADQ10 F_DPD ADQ11 ADQ12 VCC1 ADQ13 VCC2...
Page 45 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF 3.7.3 GX300 SIM2 Part Main Memory (PF38F3050M0Y3DF, U401) Figure. 3.7.3 SIM2 Part Main Memory(NOR+pSRAM) Circuit Diagram 46/158 - 46 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46 Interrupt (INT#) pin is also available on each port. Figure. 3.7.4 Dual Port MEMORY BLOCK DIAGRAM 47/158 - 47 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 47 3. TECHNICAL BRIEF 3.7.5 GX300 Dual Port Memory (CYDMX128B16-65BVXI, U400) Figure. 3.7.3 Dual Port Memory Circuit Diagram 48/158 - 48 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 48: Bluetooth Module
It is fully compliant with the Bluetooth Radio Specification and enhanced data rate specification and meets or exceed the requirement to provide the highest communication link quality of service. 49/158 - 49 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 49: Receiver Path
The receiver by the cellular transmit signal. 50/158 - 50 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50: Dual Sim Card Interface
In order to communicate with SIM card, 3 signals SIM_IO, SIM_CLK, SIM_RST. GX300 supports dual SIM mode and each SIM supports 3.0V SIM Card. SIM interface scheme is shown in (Figure 3.9.1).
Page 51: Lcd Interface
The LGDP4525B also supports a function to display in 8 colors and a standby mode, allowing for precise power control by software. 52/158 - 52 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 52 The two LDOs can be enabled when the device is in sleep mode. Total current reduces to 0.1 A in shutdown. 53/158 - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 53 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. 54/158 - 54 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 54: Battery Charger Interface
+6.9V to protect against unqualified or faulty AC adapters cables. The IC operates over the extended temperature range (-40 C to +85 C) 55/158 - 55 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 55: Keypad Interface
The interface controller contains information about the key (or key combination) that was pressed and how long it was pressed. 56/158 - 56 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 56 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF Figure 3.12.1 Block Diagram and System Integration of the KPD 57/158 - 57 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 57: Audio Front-End
• Analog part The following figure shows an architecture overview of the Audio section. Figure 3.13.1 Audio Section Overview 58/158 - 58 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 58 100% by Firmware. • The high-pass functions of the voiceband filters have to be implemented in firmware on TEAKLite®. 59/158 - 59 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 59 Loudspeaker driver, b) one mono, differential Earpiece driver and c) one stereo, single-ended (with uni- or bipolar signals), Headset driver. 60/158 - 60 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 60 The buffers are designed to be short circuit protected. Figure 3.13.3 Switching for R/L DACs onto Buffers 61/158 - 61 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 61 To improve SNR the sample frequency can be doubled in dedicated modes and the modulated data stream is 4MHz instead of 2 MHz. 62/158 - 62 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 62 VMIC can be used for supplying this microphone. Figure 3.13.5 Typical Microphone Supply Generation (alternative) 63/158 - 6 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 63: Camera Interface(1.M Fixed Focus Camera)
Programming is done by register read/write transactions using an AHB slave interface. Figure 3.14.1 Block Diagram of Camera Interface 64/158 - 64 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 64 • Color processing (contrast, saturation, brightness, hue) • Power management by software controlled clock disabling of currently not needed sub-modules 65/158 - 65 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 65: Flash Led Driver
RF PA pulse, to reduce high loads on the battery. Internal soft-start circuitry limits the amount of inrush current during start-up. Figure 3.15.1 Flash LED Driver Circuit Diagram 66/158 - 66 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 66: Key Baclklight Led Interface
Key Backlight LED is controlled by switch (Q500). If KEY_BL_EN is high, Current is flowing from VBAT to LED. Then Light emitted from The LED. Figure 3.16.1 Key Backlight Block 67/158 - 67 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 67: Vibrator Interface
It is capable to driver the vibrator motor up to 150mA Figure 3.17.1 Vibrator Driver Block Diagram Figure 3.17.2 Vibrator Driver Block 68/158 - 68 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68: Trouble Shooting
- Connect mobile switch cable between Communication test set and DUT when you need to make a phone call. - Follow trouble shooting procedure 69/158 - 69 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 69: Rf Component
Figure 4.2.1 SIM 1 (main) block Memory(1G NOR/256pSRAM) U100 PF38F6066M0Y3DE U102 (PMB8810) Main Chip (A-GOLDRADIO) U302 FEM(Tx Module) X100 Crystal, 26MHz Clock 70/158 - 70 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 70 PF38F3050M0Y3DE U402 (PMB8810) Sub Chip (A-GOLDRADIO) U300 FEM(Tx Module) Memory(Dual-Port SRAM) U400 CYDMX128B16-65BVXI X401 Crystal, 26MHz Clock 71/158 - 71 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 71: Rx Trouble
Crystal Circuit Check Mobile SW , TX module And Rx Circuit Re-download SW and Do calibration again 72/158 - 72 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 72 26MHz 1 pin 1 pin Figure 4.3.4 SIM 2 crystal circuit Figure 4.3.4 SIM 2 crystal circuit 73/158 - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 73 TP4(VLOGIC) TP7 (BS2) TP6 (BS1) FL300 TP5 (Tx_EN) FL301 Figure 4.3.7 SIM 2 Mobile SW & FEM 74/158 - 74 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 74 Figure 4.3.8 SIM1 Mobile SW & FEM circuit CONTROL LOGIC EGSM Rx Tx_EN VLOGIC Figure 4.3.9 SIM 1 TP4 ~ TP7 scope waveform 75/158 - 75 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 75 Figure 4.3.10 SIM2 Mobile SW & FEM circuit CONTROL LOGIC EGSM Rx Tx_EN VLOGIC Figure 4.3.11 SIM2 TP4 ~ TP7 scope waveform 76/158 - 76 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 76 FL300 / FL301 ? or FL300 / FL301 EGSM Rx Re-download SW and Do calibration again 77/158 - 77 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 77: Tx Trouble
Crystal Circuit Check Mobile SW , TX module And Tx Circuit Re-download SW and Do calibration again 78/158 - 78 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 78 26MHz 1 pin 1 pin Figure 4.4.4 SIM 2 crystal circuit Figure 4.4.4 SIM 2 crystal circuit 79/158 - 79 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 79 TP4(VLOGIC) TP7 (BS2) TP6 (BS1) TP5 (Tx_EN) TP8 (Tx_Ramp) Figure 4.4.7 SIM 2 Mobile SW & TX Module - 80 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 80 CONTROL LOGIC Low Band Tx Tx_EN Tx_EN Tx_Ramp VLOGIC Figure 4.4.9 SIM 1 TP4 ~ TP8 scope waveform 81/158 - 81 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 81 CONTROL LOGIC Low Band Tx Tx_EN Tx_EN Tx_Ramp VLOGIC Figure 4.4.11 SIM2 TP4 ~ TP8 scope waveform 82/158 - 82 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 82 Check PMB8810 Check TP8 ? Check PMB8810 & circuit Low Band Tx Re-download SW and Do calibration again 83/158 - 8 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 83: Power On Trouble
U102 VCORE(TP4) VPMU(TP11) 1V8_VDD(TP5) VUSB(TP12) VMMC(TP13) VRF1(TP6) VAUX(TP7) Figure 4.5.1 Figure 4.5.2 Figure 4.5.3 Remote power on 84/158 - 84 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 84 TP10 TP11 TP13 TP12 TP11 TP7 TP1 TP12 TP4 TP14 TP14 Figure 4.5.4 power block of GX300 85/158 - 85 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 85 Replace U102 and Re-download software Does it work properly? The phone will Replace the main board Properly operating. 86/158 - 86 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 86: Charging Trouble
4. TROUBLE SHOOTING 4. TROUBLE SHOOTING 4.6 Charging Trouble TEST POINT CN200 U205 Figure 4.6.1 CIRCUIT Figure 4.6.2 87/158 - 87 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 87 Pin 10 of BQ25040(TP4) = 4.2V U205 Battery is charged? Replace the main board Charging is properly operating 88/158 - 88 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 88: Vibrator Trouble
4. TROUBLE SHOOTING 4. TROUBLE SHOOTING 4.7 Vibrator Trouble TEST POINT Figure 4.7.1 CIRCUIT (U102) (U102) Figure 4.7.2 89/158 - 89 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 89 Replace the U102 at TP2 high? TP1 high? Vibrator Replace the L103 Working well ! 90/158 - 90 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 90: Lcd Trouble
4. TROUBLE SHOOTING 4.8 LCD Trouble TEST POINT CN502 FL501 FL502 FL500 TP4 TP5 U500 Figure 4.8.1 91/158 - 91 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 91 4. TROUBLE SHOOTING 4. TROUBLE SHOOTING CIRCUIT 15pF 15pF 15pF LCD_BL_EN Figure 4.8.2 92/158 - 92 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 92 4. TROUBLE SHOOTING WAVEFORM Graph 4.8.1. LCD Backlight Control Signal Waveform LCD_RS(TP4) LCD_CS(TP5) LCD_WR(TP3) Graph 4.8.2. LCD Data Waveform 93/158 - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 93 Data pins on CN100 ? Does LCD work Replace LCD module properly ? LCD working well ! 94/158 - 94 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 94: Camera Trouble
4. TROUBLE SHOOTING 4. TROUBLE SHOOTING 4.9 Camera Trouble TEST POINT S502 CN50 U500 U502 U102 Figure 4.9.1 95/158 - 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 CIRCUIT TP10 TP10 TP8 TP4 Figure 4.9.2 96/158 - 96 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 96 Graph 4.9.2. MCLK Waveform CAM_HSYNC(TP10) CAM_VSYNC (TP9) CAM_PCLK(TP7) CAM_HSYNC(TP10) 20.8MHz Graph 4.9.3.CAM_VSYNC vs. Graph 4.9.4.CAM_HSYNC vs. CAM_HSYNC Waveform CAM_PCLK Waveform 97/158 - 97 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 97 4. TROUBLE SHOOTING Graph 4.9.5.CAM Output Timing Waveform VSYNC (TP9) HSYNC (TP10) CAM_ Data Graph 4.9.6.CAM Output Timing Waveform 98/158 - 98 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98 Graph 4.9.7. Output Data and Pixel Clock Timing HSYNC (TP10) PCLK (TP7) CAM_ Data Graph 4.9.8. Output Data and Pixel Clock Timing 99/158 - 99 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 99 Data pins on S501 ? Does Camera work Replace U102 or Change the board properly ? Camera working well ! 100/158 - 100 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 100: Speaker Trouble
2. TROUBLE SHOOTING 4.10 Speaker Trouble TEST POINT CN101 U202 U102 Figure 4.10.1 CIRCUIT U202 U202 Figure 4.10.2 101/158 - 101 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 101: Only For Training And Service Purposes
4. TROUBLE SHOOTING 2. TROUBLE SHOOTING 4.10 Speaker Trouble CIRCUIT CN101 CN101 Figure 4.10.3 102/158 - 102 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 102: Only For Training And Service Purposes
CN101. Is it ok? The Sound is playing Re-soldering or replace through the Speaker? speaker. Speaker Working well!! 103/158 - 10 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 103: Earphone Trouble
2. TROUBLE SHOOTING 4.11 Earphone Trouble TEST POINT CN200 U102 U202 IC200 Figure 4.11.1 CIRCUIT U202 U202 Figure 4.11.2 104/158 - 104 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 104 2. TROUBLE SHOOTING 4.11 Earphone Trouble CIRCUIT IC200 TP3 TP4 CN200 TP TP4 CN200 CN200 Figure 4.11.3 105/158 - 105 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 105 Replace or Check the Audio signal Change IC200 TP7. is it ok? Earphone will work properly 106/158 - 106 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 106: Receiver Trouble
2. TROUBLE SHOOTING 4.12 Receiver Trouble TEST POINT CN101 U202 U102 Figure 4.12.1 CIRCUIT U202 U202 Figure 4.12.2 107/158 - 107 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 107 4. TROUBLE SHOOTING 2. TROUBLE SHOOTING CIRCUIT CN101 CN101 Figure 4.12.3 108/158 - 108 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 108 CN101. Is it ok? The Sound is playing Re-soldering or replace through the Speaker? speaker. Speaker Working well!! 109/158 - 109 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 109: Microphone Trouble
2. TROUBLE SHOOTING 4.13 Microphone Trouble TEST POINT U203 U206 MIC200 Figure 4.13.1 CIRCUIT MIC200 MIC200 Figure 4.13.2 110/158 - 110 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 110 Is it a few tens mV AC? Check the soldering of Resolder component TP2, TP3 Microphone will work properly. 111/158 - 111 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 111: Sim Card Interface Trouble
4. TROUBLE SHOOTING 4. TROUBLE SHOOTING 4.14 SIM Card Interface Trouble TEST POINT Figure 4.14.1 CIRCUIT Figure 4.14.2 112/158 - 112 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 112 Does it work main board Properly? Properly? SIM card is SIM card is properly working properly working. 113/158 - 11 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 113: Key Backlight Trouble
4.15 KEY backlight Trouble TEST POINT LD501 LD502 LD505 LD504 LD507 LD506 LD503 LD508 BOTTOM R540 R541 Figure 4.15.1 114/158 - 114 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 114 Are all LEDs Check the soldering Working? each R and LED Backlight will Replace or resolder work properly. component 115/158 - 115 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 115: Micro Sd Trouble
4. TROUBLE SHOOTING 4.16 Micro SD Trouble TEST POINT S500 TP1 TP2 Figure 4.16.1 CIRCUIT Figure 4.16.2 116/158 - 116 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 116 Check out MC_CLK & Data Re-download SW Timing OK? Replace Micro SD Card Micro SD Card will work properly 117/158 - 117 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 117: Bluetooth Trouble
4.17 Bluetooth Trouble TEST POINT BT Ant. Matching Component Figure 4.17.1 Bluetooth block CIRCUIT Figure 4.17.2 Bluetooth circuit 118/158 - 118 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 118 Check U102 circuit (CLK32K_S1) Check TP4 Check U102 circuit (BT_CLK_S1) Replace U303 U102 (PMB8810) : Main Chip (A-GOLDRADIO) 119/158 - 119 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 119: Fm Radio Trouble
IC200 Filter Circuit Figure 4.18.1 FM Radio test point CIRCUIT U102 U102 Figure 4.18.2 FM Radio circuit 120/158 - 120 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 120 (L201, C231, C232) Give the additory A condition is good? solder in L201, C231, C232 Check U102 Circuit (VDD_FMR) 121/158 - 121 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 136: Circuit Diagram
ADQ13 VCC2 ADQ14 ADQ15 VCCQ1 VCCQ2 VSS1 VSS2 VSS3 VSS4 F_VPP 26MHz 2.5G VCHAR ON_SW VBAT URXD UTXD Copyright © 2010 LG Electronics. Inc. All right reserved. - 137 - LGE Internal Use Only Only for training and service purposes...
Page 138 7. CirCuit diagram 1842.5MHz,75MHz 1842.5MHz,75MHz 881.5MHz,25MHz 881.5MHz,25MHz Copyright © 2010 LG Electronics. Inc. All right reserved. - 139 - LGE Internal Use Only Only for training and service purposes...
Page 140 7. CirCuit diagram 15pF 15pF 15pF Not Mount 15pF 15pF LCD_BL_EN Copyright © 2010 LG Electronics. Inc. All right reserved. - 141 - LGE Internal Use Only Only for training and service purposes...
Page 141 7. CirCuit diagram FL_OUT- FL_OUT+ SIM2_IO SIM1_IO FL_OUT- FL_OUT+ VIB_P LGE Internal Use Only - 142 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 142: Bga Pin Map
8.1 BGA IC pin check (U102) - SIM 1 Ball Diagram (Top View), PMB8810(A-GOLDRADIO+) SIM 1 : not in use 135/158 - 14 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 143 8.2 BGA IC pin check (U402) - SIM 2 Ball Diagram (Top View), PMB8810(A-GOLDRADIO+) SIM 2 : not in use 136/158 - 144 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 144 8.3 BGA IC pin check (U100) - SIM 1 Ball Diagram (Top View), PF38F6066M0Y3DE SIM 1 : not in use 137/158 - 145 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 145 8.4 BGA IC pin check (U401) - SIM 2 Ball Diagram (Top View), PF38F3050M0Y3DE SIM 2 : not in use 138/158 - 146 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 146 8.5 BGA IC pin check (U400) – Dual Port SRAM Ball Diagram (Top View), CYDMX128B16-65BVXI DPRAM : not in use 139/158 - 147 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 148: Pcb Layout
9. PCB Layout LD501,502,503,504,505,506,507,508 - No Key Backlight MIC200 - No MIC Operation GX300_MAIN_SPFY0222401-1.1 TOP Copyright © 2010 LG Electronics. Inc. All right reserved. - 149 - LGE Internal Use Only Only for training and service purposes...
Page 149 SW300(mobile switch) - Can’t make a call -Tx Low power - Not good BER - No Service GX300_MAIN_SPFY0222401-1.1 BOT LGE Internal Use Only - 150 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 150 9. PCB Layout CN101 (Speaker Solder-Pad) VB100 (Vibrator Solder-Pad) - No Speaker & Receiver Sound - No Vibrator Operation GX300_F_SUB_SPCY0222201_1.0_TOP Copyright © 2010 LG Electronics. Inc. All right reserved. - 151 - LGE Internal Use Only Only for training and service purposes...
Page 151 CN100 (B to B Connector) - No SIM Operation - No Speaker & Receiver Sound - No Vibrator Operation GX300_F_SUB_SPCY0222201_1.0_BOT LGE Internal Use Only - 152 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 152: Stand Alone Test
2. Check PC Baud Rate 3. Confirm EEPROM & Delta file prefix name, and then click “OK”. Not Connected 144/158 - 15 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 153 7. If you want to test the SIM2 equally, click the “AT Terminal” and then enter “AT%uartpath=1”. Then retry 4~6 step again. (uartpath=0 SIM1, uartpath=1 SIM2) Connected Change ptest_mod Non signaling mode 145/158 - 154 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 154: Tx Test
3. Put the number of “PCL” in the PA Level menu. 4. Finally, Click “Write All” bar and try the efficiency test of Phone. 146/158 - 155 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 155: Rx Test
4. The Phone must be changed “normal mode” after finishing Test. Change the Phone to “normal mode” and then Click the “Reset” bar. Change normal_mod 147/158 - 156 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 156: Auto Calibration
GX300 LG_RfCal_InfiKE000Ag_181.dll Ezlooks dwdio.dll AutoSetup_GB230_100 GX300 xmm2130_eep509.cfg / xmm2130_eep609.cfg LG_UI_Ad6500_004.dll Multi_HK.reg LG_RfTest_E5515C_122.dll LG_RfCal_InfiKE000Ag_181.dll dwdio.dll 148/158 LG_UI_Ad6500_004.dll Multi_HK.reg - 157 - Copyright © 2010 LG Electronics. Inc. All right reserved. 148/158 LGE Internal Use Only Only for training and service purposes...
Page 157: Description Of Basic File
11.3.6 UI -. LG_UI_Ad6500_002.dll : ADI Model UI Dll. 11.3.7 Multi_HK -. Registration File For System Setting. 149/158 - 158 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 158: Auto Calibration Setup
DIP SW ON state always 4. Press the Phone power key, if the Remote ON is used, 1 ON state 150/158 - 159 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 159: Procedure
10. Select “ LOGIC MODE” that you want Logic mode: 1-> Calibration only 2-> Auto test only 3-> Cal & Auto 151/158 - 160 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 160 13. AUTO CALIBRATION 11. Select the model name “GX300_Main” or “GX300_Sub” Model name Start button 12. Click “start” button 152/158 - 161 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 161: Agc
PCS 1900 Frequency 1850.2 MHz 1880 MHz 1909.8 MHz Max power 30.0 dBm 30.0 dBm 30.0 dBm 153/158 - 162 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 162: Exploded View & Replacement Part List
ACGK00 ABFZ00 SVLM00 MIC200 SACY00 SPKY01 ACKA00 SPKY00 MTAD00 MWAC00 AKAC00 ADCA00 SUMY00 ACGM00 MCJA00 SNGF00 GGZZ00 SNGF01 Copyright © 2010 LG Electronics. Inc. All right reserved. - 163 - LGE Internal Use Only Only for training and service purposes...
Page 164: Replacement Parts
COMPLEX, (empty), , , , , COLOR WITHOUT MIAA00 INDICATOR,LED MIAA0028801 COMPLEX, (empty), , , , , COLOR - 165 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 165 COMPLEX, (empty), , , , , COLOR WITHOUT MPBU00 PAD,CONNECTOR MPBU0096101 COMPLEX, (empty), , , , , COLOR - 166 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 166 TAPE,PROTECTION MTAB0418402 COLOR WITHOUT ADCA00 DOME ASSY,METAL ADCA0111401 COLOR WITHOUT MLAZ00 LABEL MLAZ0038301 PID Label 4 Array COLOR - 167 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 167 Level Description Part Number Spec Color Remark WITHOUT MLAA00 LABEL,APPROVAL MLAA0062303 COMPLEX, (empty), , , , , COLOR - 168 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 168: Main Component
SAFB0107301 SPKY00 PCB,SIDEKEY SPKY0085501 POLYI ,0.15 mm,DOUBLE , ,; , , , , , , , , , - 169 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 169 47000 pF,10V ,K ,B ,HD ,1005 ,R/TP C131 CAP,CERAMIC,CHIP ECCH0000151 4.7 nF,25V,K,X7R,HD,1005,R/TP C132 CAP,CHIP,MAKER ECZH0001210 470 nF,10V ,Z ,Y5V ,HD ,1005 ,R/TP - 170 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 170 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP C214 CAP,CERAMIC,CHIP ECCH0000115 22 pF,50V,J,NP0,TC,1005,R/TP C215 CAP,CHIP,MAKER ECZH0001215 1 uF,10V ,K ,X5R ,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 ECCH0000179 22 nF,16V ,K ,X5R ,HD ,1005 ,R/TP C245 CAP,CERAMIC,CHIP ECCH0000179 22 nF,16V ,K ,X5R ,HD ,1005 ,R/TP - 172 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 172 ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C309 CAP,CHIP,MAKER ECZH0000802 1 pF,50V ,C ,NP0 ,TC ,1005 ,R/TP C310 CAP,CERAMIC,CHIP ECCH0000105 4 pF,50V,C,NP0,TC,1005,R/TP - 17 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 173 ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C344 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C345 CAP,CERAMIC,CHIP ECCH0000110 10 pF,50V,D,NP0,TC,1005,R/TP - 174 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 174 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C420 CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C421 CAP,CERAMIC,CHIP ECCH0000151 4.7 nF,25V,K,X7R,HD,1005,R/TP - 175 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 175 ECZH0001215 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP C511 CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP - 176 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 176 FB202 FILTER,BEAD,CHIP SFBH0008105 1800 ohm,1005 ,Chip bead ,; ,1800ohm ,; ,[empty] ,R/TP FB203 FILTER,BEAD,CHIP SFBH0000912 1000 ohm,1005 , - 177 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 177 3.3 uH,M ,2.5*2.0*1.0 ,R/TP ,Chip power L200 INDUCTOR,CHIP ELCH0003842 100 nH,J ,1005 ,R/TP ,MLCI L201 INDUCTOR,CHIP ELCH0001556 270 nH,J ,1608 ,R/TP , - 178 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 178 ,0.1uA MAX ,10 MIN 700 MAX ,100mW ,ESM ,R/TP ,3P VSM ,0.1 W,R/TP ,1.2*1.2*0.5 Vcbo=20, Vceo=12, Q301 TR,BJT,NPN EQBN0019201 Vebo=2V, Ic=100mA - 179 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 179 R201 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP R202 RES,CHIP ERHY0000241 1K ohm,1/16W,J,1005,R/TP PCB ASSY,MAIN,PAD R203 SAFP0000501 SHORT - 180 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 180 SAFP0000501 SHORT R240 RES,CHIP,MAKER ERHZ0000278 3900 ohm,1/16W ,F ,1005 ,R/TP R241 RES,CHIP,MAKER ERHZ0000204 100 Kohm,1/16W ,F ,1005 ,R/TP - 181 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 181 R322 RES,CHIP ERHY0000128 15K ohm,1/16W,F,1005,R/TP PCB ASSY,MAIN,PAD R323 SAFP0000501 SHORT R327 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP - 182 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 182 10 Kohm,1/16W ,F ,1005 ,R/TP R433 RES,CHIP,MAKER ERHZ0000203 10 Kohm,1/16W ,F ,1005 ,R/TP PCB ASSY,MAIN,PAD R434 SAFP0000501 SHORT - 18 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 183 ENSY0023301 8 ,ETC , ,0.7 mm,H=1.52,(15*15) S501 CONN,SOCKET ENSY0022201 24 ,ETC , , mm,7*7, 1.3M (1/5") Socket Type - 184 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 184 U500 EUSY0344402 QFN ,20 ,R/TP ,4CH,2LDO,3X3 ,; ,IC,Sub PMIC U501 EUSY0385801 LLP ,12 ,R/TP ,1A ,; ,IC,Charge Pump - 185 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 185 ,112~285mcd , ,95mW ,[empty] ,[empty] ,2P White ,1608 ,R/TP ,0.2t ,; ,[empty] ,2.7~3.1V ,25mA LD502 DIODE,LED,CHIP EDLH0015109 ,112~285mcd , ,95mW ,[empty] ,[empty] ,2P - 186 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 186 5 V,<0.15pF ,SMD , VA513 VARISTOR SEVY0007301 5 V,<0.15pF ,SMD , VA514 VARISTOR SEVY0007301 5 V,<0.15pF ,SMD , - 187 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 187 SUSY00 SPEAKER SUSY0028902 ,[empty] Main ,2.2" ,176*220 ,39.848*52.95*1.9t ,262K ,TFT ,TM SVLM00 LCD MODULE SVLM0036101 ,LG4525B , , - 188 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 188: Accessory
100-240V ,5060 Hz,5.1 V,0.7 A,CB / GOST ,AC-DC ADAPTOR,AC-DC SSAD0032202 ADAPTOR ,; ,90Vac~350Vac ,5.1Vdc ,700mA ,5060 , ,WALL 2P ,USB , - 189 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

LG GX300 Service Manual

1 Introduction

2 Performanc

3 Technical Brief

4 Trouble Shooting

5 Download

6 Block Diagram

7 Circuit Diagram

8 BGA Pin Map

9 Pcb Layout

10 Stand Alone Test

11 Auto Calibration

12 Exploded View & Replacement

Exploded View & Replacement Part List

Available languages

Quick Links

Related Manuals for LG GX300

Summary of Contents for LG GX300

Table of Contents