Page 1 Internal Use Only Service Manual LG-C300 Date: August, 2010 / Issue 1.0...
Page 2: Table Of Contents
1. Accessory ................... 16 4.9 Speaker Trouble ................88 4.10 Earphone Trouble ..............90 4.11 Receiver Trouble .................92 4.12 Microphone Trouble ..............94 - - 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. 4/133 - 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. 5/133 - 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 - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 7 Time Division Multiple Access UART Universal Asynchronous Receiver/Transmitter Voltage Controlled Oscillator VCTCXO Voltage Control Temperature Compensated Crystal Oscillator Wireless Application Protocol - 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 Yes (Stereo) PC Synchronization EFR/FR/HR/NB-AMR Speech coding Data and Fax Vibrator Loud Speaker Voice Recoding Microphone 8/133 - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 9 SW decoded max. 32 poly Camera Bluetooth / FM Radio BT 2.1 + EDR / 87.5 ~ 108MHz supported 9/133 - 10 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 10: Technical Specification
Power Toler. 30dBm 14dBm 28dBm 12dBm 26dBm 10dBm 24dBm 8dBm 22dBm 6dBm 20dBm 4dBm 18dBm 2dBm 16dBm 0dBm - 11 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 11 6,000 GSM850/ EGSM Offset from Carrier (kHz). Max. dBm Output RF Spectrum (due to switching transient) 1,200 1,800 - 12 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 12 3 dB 15 3 dB Frequency (Hz) Max.(dB) Min.(dB) 1,000 Sending Response 2,000 3,000 3,400 4,000 4 3 dB - 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 - 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: 900mAh Switching-mode charger Travel Charger Input: 100 ~ 240V, 50/60 Hz Output: 4.8V, 700mA - 15 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 15: Technical Brief
3. TECHNICAL BRIEF TECHNICAL BRIEF 3. TECHNICAL BRIEF 3.1 Digital Main Processor Figure. 3.1.1 X-Gold tm 213 Hardware Block Diagram - 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 16/133 - 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 - 18 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 18: Power Management
– USB charging spec 1.0 compliant • Backlight – Up to 5 serial white LEDs (integrated LDO) 18/133 - 19 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 19: Main Lcd Display
– 64 voices MIDI, SP-MIDI – FM synthesizer • AMR-WB • True ring tones (MP3) • MP3, eAAC+ • G.722 SB-ADPCM encoding/decoding - 20 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 20: Power Management
Unit (PMU). The PMU is designed to deliver the power for a typical standard phone. Figure. 3-2-1 Block Figure of the PMU Modules X-Gold tm 213 - 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. - 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) 22/133 - 2 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 23 This is handled by an ADC control block in one of the state-machines. If the charger unit is running the ADC is controlled by the charger state-machine - 24 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 24 3. TECHNICAL BRIEF Figure.3.2.1 First Part of the State Machine, Running in Different Power Domains than the Second Part 24/133 - 25 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 25 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF Figure 3.2.2 Second (Main) Part of the Startup State Machine in the VPMU Domain - 26 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 26 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. 26/133 - 27 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 27 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF Figure 3.2.3 Start Up Sequence (triggered by First Connect Event) 28/133 - 28 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 28 In testmode signal reset_pmu_n_o is high, that means the chip reset is fully controlled from external . - 29 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 29 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. 30/133 - 0 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 30 That means all PMU register are reset in OFF state. For details about the SW reset see chapter External Reset Handling . 31/133 - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 31 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 . 32/133 - 2 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32: Fem With Integrated Power Amplifier Module
ESD protection at the antenna port. The RF7161 is designed to provide maximum efficiency at rated POUT. 33/133 - - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 33 ESD protection at the antenna port. The RF7161 is designed to provide maximum efficiency at rated POUT. 33/133 - 4 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34 C315 C319 C326 C359 C322 C302 L303 3.3n L306 3.3n C314 1.5p Figure 3.3.3 FEM CIRCUIT DIAGRAM 34/133 - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 35: Crystal(26 Mhz, X102)
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. 35/133 - 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 (U102)
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 3-5-1. 36/133 - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 37 DC offset removal and programmable gain control. Figure. 3.5.2 RECEIVER CHAIN BLOCK DIAGRAM 37/133 - 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. 38/133 - 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 - 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 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 41: Memory(Pf8F6066M0YDe, U102)
(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 - 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. 42/133 - 4 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 43: Bt Module (U02)
Bluetooth Radio Specification and enhanced data rate specification and meets or exceed the requirement to provide the highest communication link quality of service. - 44 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. 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 - 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 makes SIM card to HW default status. SIM_CLK This signal is transferred to SIM card. SIM_DATA This signal is interface datum. - 46 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46: Lcd Interface
0.001uF MLED2 C428 C427 MLED3 27pF MLED4 MLED5 C425 C426 2.2u Figure 3-9-1. LCD Interface of LCD FPCB - 47 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 47 1.1V to 3.3V by I2C interface. The outputs of LDO offer 3% accuracy and low dropout voltage of 250mV @300mA. The LDO also provides current limiting and output short circuit thermal folded back protection. 47/133 - 48 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 48 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF Figure 3-9-3. RT9396C FUNCTION BLOCK DIAGRAM - 49 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 49: Battery Charger Interface
The RT9524 is available in a WDFN-10L 2x3 package to achieve optimized solution for PCB space and thermal considerations. - 50 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50: Keypad Interface
KEY_ROW0 KEY_ROW1 Figure 3-11-1 MAIN KEY STRUCTURE KEY_ROW2 KEY_ROW3 KEY_ROW4 KEY_ROW5 KEY_ROW6 KEY_ROW7 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 51/133 - 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 - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 53 100% by Firmware. • The high-pass functions of the voiceband filters have to be implemented in firmware on TEAKLite®. - 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 - 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 - 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 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 57 In case of an digital microphone VMIC can be used for supplying this microphone. Figure 3.12.5 Typical Microphone Supply Generation (alternative) - 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 - 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 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 60: Key Baclklight Led Interface
LD411 LD414 LD413 LD412 LD401 C431 0.1u D401 Figure 3-14-1 Key Backlight Block Figure 3-14-1 Key Backlight Block - 61 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 61: Vibrator Interface
Figure 3-15-1 Vibrator Driver Block Diagram MOTOR VB201 VIB_P VIB_P L208 0.1uH C254 C253 VIB_N SJMY0007110 L209 0.1uH Figure 3-15-2 Vibrator Driver Block - 62 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 62: Trouble Shooting
U301 SW301 Figure 4.1 Memory(512NOR/128pSDRAM) U102 PF38F5060M0Y3DF U101(PMB8810) Main Chip (A-GOLDRADIO) U301 FEM(Tx Module) X102 Crystal, 26MHz Clock - 6 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 63: Rx Trouble
Crystal Circuit (2) Check Mobile SW &TX module (3) Check PLL Control Re-download SW or Do calibration again - 64 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 64 DMINUS 2V85_VSIM 26MHz VSIM SIM_DATA SIM_IO SIM_CLK C126 SIM_CLK 1 pin SIM_RST 0.1u SIM_RST Figure 4.2.2 Figure 4.2.3 - 65 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 65 FL301 SFSB0001803 IN_881_5 OUT_881_5 L305 L310 9.1n IN_942_5 OUT_942_5 C396 GND1 GND2 RX12 GND3 GND4 GND5 GND6 869M894M,925M960MHz - 66 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 66 TP3(Low Band) Replace FEM (U301) Signal is OK ? EGSM Rx Mobile SW & TX Module is OK. - 67 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 67: Tx Trouble
(1)Check Crystal Circuit (2) Check Mobile SW &FEM (3) Check PLL Control Redownload SW or Do calibration again - 68 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68 DMINUS 2V85_VSIM 26MHz VSIM SIM_DATA SIM_IO SIM_CLK C126 SIM_CLK SIM_RST 0.1u SIM_RST 1 pin Figure 4.3.2 Figure 4.3.3 - 69 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 69 FL301 SFSB0001803 IN_881_5 OUT_881_5 L305 L310 9.1n IN_942_5 OUT_942_5 C396 GND1 GND2 RX12 GND3 GND4 GND5 GND6 869M894M,925M960MHz - 70 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 70 Replace FEM (U301) TP5 signal same Replace SW301 as TP1? EGSM Tx Mobile SW & FEM is OK. - 71 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 71: Power On Trouble
4.4 Power On Trouble TEST POINT VMMC VAUX VPMU VDDMS VDDXO VRTC VUSB VCORE VDDRF2 VDDTDC Figure 4.1 - 72 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 72 PMU PADS GSM_OUT A_D8 AD08 AD09 A_D9 Figure 4.2 Power block of LG-C300 Figure 4.2 power block of LG-C300 - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 73 Is the phone power on? Re-download software Does it work properly? The phone will Replace the main board Properly operating. - 74 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 74: Charging Trouble
CHGSB EUSY0410801 LDO_OUT GND2 IEOC EN_SET CHG_EN C222 C223 R233 R234 C221 C257 0.1u 3.9K (25V) 0.1u (10V) - 75 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 75 Pin 1 U203 = 5.1V ? Change the TA (C223) Battery is charged? Replace the main board Charging is properly operating - 76 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 76: Vibrator Trouble
4. TROUBLE SHOOTING 4. TROUBLE SHOOTING 4.6 Vibrator Trouble TEST POINT Vibrator PAD C254_TP1 L209_TP2 Rear Cover Figure 4.6 - 77 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 77 Main IC (U101) Main (U101) PWRON MOTOR VB201 VIB_P VIB_P L208 0.1uH C254 C253 VIB_N SJMY0007110 L209 0.1uH - 78 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 78 Pin (+) high? Is the voltage at Replace the U102 Vibrator PAD (+) high? Replace vibrator Vibrator Working well ! - 79 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 79: Lcd Trouble
4. TROUBLE SHOOTING 4.7 LCD Trouble TEST POINT FL403 U402 FL404 FL405 CN403 C415_TP2 R417_TP1 Figure 4.7 - 80 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 80 C419 2.2u 1V8_VDD C420 C421 C422 C433 C401 C402 2.2u 2.2u I2C_SCL I2C_SDA LCD_BL_CTRL C418 R427 0.1u 100K - 81 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 81 4. TROUBLE SHOOTING Waveform LCD_BL_CTRL Graph 4.7.1. LCD Backlight Control Signal Waveform LCD_RS LCD_CS LCD_WR Graph 4.7.2. LCD Data Waveform - 82 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 82 Check the Waveform of (FL403,FL404,FL405) EMI filter ? Does LCD work Replace LCD module properly ? LCD working well ! - 8 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 83: Camera Trouble
4. TROUBLE SHOOTING 4. TROUBLE SHOOTING 4.8 Camera Trouble TEST POINT C420 C401 C402 CN402 U402 Figure 4.8 - 84 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 84: Camera Interface
C419 2.2u 1V8_VDD C420 C421 C422 C433 C401 C402 2.2u 2.2u I2C_SCL I2C_SDA LCD_BL_CTRL C418 R427 0.1u 100K - 85 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 85 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 - 86 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 86 Data pins on CN402? Does Camera work Replace U101 or Change the board properly ? Camera working well ! - 87 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 87: Speaker Trouble
C213 2.2u 1V8_VDD 1V8_HPVDD R238 1800 C205 I2C_SCL 2.2u FB207 I2C_SDA 2.2u C204 C206 0.1u EAR_GND R250 R212 EAR_GND - 88 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 88 Check the Audio signal Check the Audio signal Replace/Change the U202 L210. L211 C210,C209 Speaker Speaker Working well!! Working well!! - 89 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 89: Earphone Trouble
EAR_GND HP_ROUT 0.1uH 1800 R250 R212 VA206 VA209 VA210 VA205 C261 EAR_GND C262 C240 C252 270pF 270pF EAR_GND - 90 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 90 Change the Your voice from the earphone? and try again U202 & U101 the earphone? Earphone will work properly - 91 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 91: Receiver Trouble
VMIC VUMIC C102 C127 C112 C110 C108 C109 AGND VREF C105 PLACE THESE CAPS NEAR BB IC 220n - 92 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 92 Replace/Change the receiver C245 and C246 Fluctuate? Is receiver connected Resolder/Change the receiver Properly? Receiver will work properly. - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 93: Microphone Trouble
CIRCUIT VMIC MICROPHONE L201 100n C230 C231 MIC201 MIC_N C232 MIC_P SUMY0010609 VA203 VA204 D201 R235 C238 C237 - 94 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 94: Only For Training And Service Purposes
Is it a few tens mV AC? Check the soldering of Resolder component C233, C236 Microphone will work properly. - 95 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 95: Sim Card Interface Trouble
C413 ZD403 ZD402 ZD401 0.1u C414 C415 ZD200ZD201 is DNI defaultly These are added for CMCC ESD test - 96 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 96 Does it work Does it work Properly? Properly? SIM card is SIM card is properly working properly working. - 97 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 97: Key Backlight Trouble
4. TROUBLE SHOOTING 4. TROUBLE SHOOTING 4.14 KEY backlight Trouble TEST POINT LD401 ~ LD414 Q201 Figure 4.14 - 98 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98 Are all LEDs Check the soldering Working? each R and LED Replace or resolder Backlight will work properly. component - 99 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 99: Micro Sd (Usd) Trouble
ENSY0020901 USD_D0 USD_CLK USD_CMD USD_D3 USD_D2 R204 USD_DET 47ohms 1V8_VDD VA212 VA213 C220 R205 100Kohms 2.2uF C215 0.001uF - 100 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 100 Check out Re-download SW MC_CLK & Data Timing OK? Replace Micro SD Card Micro SD Card will work properly - 101 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 101: Bluetooth Trouble
TP326 BT_CTS UART_RTS_N TP327 TP319 BT_RTS GPIO_0 UART_CTS_N DBB_BT_INT TP320 BT_DBB_INT GPIO_1 TP321 TCXO_OR_OUT_GPIO_5 FSYS_EN TCXO_OR_IN_GPIO_6 C393 GPIO_7 - 102 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 102 1V8_VDD at C385 Check the C374 Replace BT_CLK U101 Replace Check BT Test point pin U302 BT will work properly - 10 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 103: Fm Radio Trouble
VDET ANT301 L313 L314 FM_ANT_1 270n C244 L203 C341 C394 FM_ANT 0.1uH VA211 L202 0.1uH EAR_GND R251 J201 - 104 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 104 A condition is good? solder in C389, C371, L318 Replace Check FM LNA EN U101 (L304) FM_radio will work properly - 105 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 114 5. DOWNLOAD LG-C00 ‘LG-C00’ LG-C00 LG-C00 LG-C00 LG-C00 LG-C00 ‘LG-C00’ LG-C00 - 115 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 120: Circuit Diagram
R130 100K 100K 100K 100K 100K X101 FC-135 OJ101 OJ102 C103 32.768KHz C116 R137 ON_SW F_MODE F_MODE ON_SW Copyright © 2010 LG Electronics. Inc. All right reserved. - 121 - LGE Internal Use Only Only for training and service purposes...
Page 121 LDO_OUT GND2 IEOC EN_SET CHG_EN C222 C223 R233 R234 C221 C257 0.1u 3.9K (25V) 0.1u (10V) 04-5151-005-100-883 ENRY0010801 LGE Internal Use Only - 122 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 122 R304 270ohms C313 FM_ANT Q301 FM_ANT_1 470n C312 R305 4.7K 470n ANT301 L313 L314 FM_ANT_1 270n C341 C394 Copyright © 2010 LG Electronics. Inc. All right reserved. - 123 - LGE Internal Use Only Only for training and service purposes...
Page 123 100ohms KEY_COL0 R422 100ohms KEY_COL1 R405 100ohms KEY_COL2 R406 100ohms KEY_COL3 R425 100ohms KEY_COL4 R415 100ohms KEY_COL5 VA403 LGE Internal Use Only - 124 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 124: Bga Pin Map
BGA IC pin check (U102) BGA IC pin check (U101) Ball Diagram (Top View), PMB8810(A-GOLDRADIO+) : not in use 118/133 - 125 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 125 BGA IC pin check (U101) BGA IC pin check (U102) Ball Diagram (Top View), PF38F6066M0Y3DE : not in use - 126 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 126: Pcb Layout
9. PCB LAYOUT MIC201 (Main Mic) - No Mic Operation LG-C300_MAIN_SPFY0229001-1.0_TOP Copyright © 2010 LG Electronics. Inc. All right reserved. - 127 - LGE Internal Use Only Only for training and service purposes...
Page 127: Pcb Layout
- No SIM Operation U401(Tr. for Key Backlight) - No Key Backlight ANT302 (Main RF contact pad) LG-C300_MAIN_SPFY0229001-1.0_BOT LGE Internal Use Only - 128 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 128: Engineering Mode
[5-1] Variable Watch [5-2] Heap Freesize [5-3] Heap Leakage [5-4] Heap Assert [6-5] QM Heap Freesize [6-6] Developer Debug - 129 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 129: Stand Alone Test
11.2 Setting Method 1. Set COM Port 2. Check PC Bau Rate 3. Confirm EEPROM & Delta file prefix name - 10 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 130 11. STAND ALONE TEST 10. STAND ALONE TEST Not Connected Connected 4. Click “Update Info” for communicating Phone and Test-Program - 11 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 131 5. For the purpose of the Standalone Test, Change the Phone to “ptest mode” and then Click the “Reset” bar. 6. Select “Non signaling” in the Quick Bar menu. Then Standalone Test setup is finished. - 12 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 132: Tx Test
10. STAND ALONE TEST 11.3 Tx Test 1. “Non signaling mode” bar and then confirm “OK” text in the command line. - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 133 3. Select “Tx” in the RF mode menu and “PCL” in the PA Level menu. 4. Finally, Click “Write All” bar and try the efficiency test of Phone. - 14 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 134: Rx Test
2. Select “Rx” in the RF mode menu. 3. Finally, Click “Write All” bar and try the efficiency test of Phone. - 15 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 135 4. The Phone must be changed “normal mode” after finishing Test. 5. Change the Phone to “normal mode” and then Click the “Reset” bar. - 16 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 136: Auto Calibration
LG-C300 KF300d Spec_GD350_001 LG-C00 Setup_Cal_Parameter_001 script_001 PwrSupply_Cmd Procedure_GD350_001 LG-C00 Ezlooks AutoSetup_GD350_001 LG-C00 xmm2130_eep008.cfg LG_RfTest_E5515C_122.dll LG_RfCal_InfiKE000Ag_177.dll dwdio.dll LG_UI_Ad6500_004.dll Multi_HK - 17 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 137: Description Of Basic File
Setup Module. & -. Spec_LG-A133_001.xml : Definition Module of Auto Test Spec LG-C300 -. Setup_Cal_Parameter_001.xml : Calibration Definition Module. - 18 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 138: 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 - 19 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 139 10. Select “ LOGIC MODE” that you want Logic mode: 1-> Calibration only 2-> Auto test only 3-> Cal & Auto - 140 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 140 11. AUTO CALIBRATION 11. Select the model name “LG-A133” LG-C00 LG-C00 Model name Start button 12. Click “start” button LG-C00 - 141 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 141: Agc
29.5dBm 29.5dBm 29.5dBm Channel PCS 1900 Frequency 1850.2 MHz 1880 MHz 1909.8 MHz Max power 29dBm 29dBm 29dBm - 142 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 142: Exploded View & Replacement
KEYPAD, MAIN AKAD00 KEYPAD, SUB MBJZ00 BUTTON, VOLUME MTAD00 TAPE, WINDOW, LCD MWAC00 WINDOW, LCD ACGK00 COVER, FRONT, ASSY Copyright © 2010 LG Electronics. Inc. All right reserved. - 143 - LGE Internal Use Only Only for training and service purposes...
Page 144: 1.2 Replacement Parts
ORANGE WHITE ACGY COVER ASSY,EMS ACGY0007804 ORANGE ACGK00 COVER ASSY,FRONT ACGK0162601 WHITE WITHOUT AKAC00 KEYPAD ASSY,MAIN AKAC0014501 COLOR - 145 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 145 COMPLEX, (empty), , , , , COLOR WITHOUT MTAA00 TAPE,DECO MTAA0223901 COMPLEX, (empty), , , , , COLOR - 146 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 146 PRESS, STS, , , , , COLOR WITHOUT MLAA00 LABEL,APPROVAL MLAA0062303 COMPLEX, (empty), , , , , COLOR - 147 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 147: Main Component
Color Remark 3 V,0.08 A,5.8*5.1*9 ,cylinder motor ,; ,3V , , ,11000 , , , SJMY00 VIBRATOR,MOTOR SJMY0007905 3.0 ,-5.0 dBd, ,LG-C300 FM Internal_FPCB, Pb-Free ,; SNGF ANTENNA,GSM,FIXED SNGF0061901 ,SINGLE ,-5.0 ,50ohm ,3.0 3.0 ,-2.0 dBd, ,LG-C300 Main Internal SNGF00...
Page 148 ECZH0001217 470 nF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C142 CAP,CERAMIC,CHIP ECCH0000122 47 pF,50V,J,NP0,TC,1005,R/TP C143 CAP,CERAMIC,CHIP ECCH0000122 47 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 NOT ASSEMBLE Unfixed C228 CAP,CERAMIC,CHIP ECCH0000155 10 nF,16V,K,X7R,HD,1005,R/TP C229 CAP,CERAMIC,CHIP ECCH0000145 1.5 nF,50V,K,X7R,HD,1005,R/TP C230 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP - 150 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 150 ECZH0000830 33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP C305 CAP,CHIP,MAKER ECZH0000802 1 pF,50V ,C ,NP0 ,TC ,1005 ,R/TP - 151 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 151 ECCH0000198 2.2 uF,6.3V ,M ,X5R ,TC ,1005 ,R/TP C385 CAP,CERAMIC,CHIP ECCH0000198 2.2 uF,6.3V ,M ,X5R ,TC ,1005 ,R/TP - 152 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 152 ECCH0000117 27 pF,50V,J,NP0,TC,1005,R/TP C428 CAP,CHIP,MAKER ECZH0001215 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP C429 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP - 15 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 153 881.5 MHz,25 MHz,2.5 dB,23 dB,942.5 MHz,35 MHz,2.9 dB,18 dB,1.8*1.4*0.5 ,SMD FL301 FILTER,SAW,DUAL SFSB0001803 ,869M~894M,925M~960M,10p,B,150,LH,GSM850+EGS M Rx,DIP_OUT ,; ,881.5+942.5 ,1.8*1.4*0.5 ,SMD ,R/TP - 154 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 154 22 nH,J ,1005 ,R/TP , L305 INDUCTOR,CHIP ELCH0003818 9.1 nH,J ,1005 ,R/TP , L306 INDUCTOR,CHIP ELCH0003826 3.3 nH,S ,1005 ,R/TP ,chip - 155 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 155 SAFP0000501 SHORT R113 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP R114 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP - 156 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 156 2200 ohm,1/16W ,J ,1005 ,R/TP R219 RES,CHIP,MAKER ERHZ0000206 10 ohm,1/16W ,F ,1005 ,R/TP R222 RES,CHIP,MAKER ERHZ0000451 27 ohm,1/16W ,J ,1005 ,R/TP - 157 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 157 PCB ASSY,MAIN,PAD R329 SAFP0000501 SHORT PCB ASSY,MAIN,PAD R330 SAFO0000501 0OHM_1005_DNI OPEN R401 RES,CHIP,MAKER ERHZ0000355 270 ohm,1/16W ,F ,1005 ,R/TP - 158 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 158 270 ohm,1/16W ,F ,1005 ,R/TP R436 RES,CHIP,MAKER ERHZ0000355 270 ohm,1/16W ,F ,1005 ,R/TP R437 RES,CHIP,MAKER ERHZ0000355 270 ohm,1/16W ,F ,1005 ,R/TP - 159 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 159 QFN ,24 ,R/TP ,4CH+2LDO ,; ,IC,Sub PMIC VA201 VARISTOR SEVY0004301 18 V, ,SMD ,10pF, 1005 VA202 VARISTOR SEVY0004301 18 V, ,SMD ,10pF, 1005 - 160 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 160 18 V, ,SMD ,10pF, 1005 VA419 VARISTOR SEVY0004301 18 V, ,SMD ,10pF, 1005 32.768 KHz,20 PPM,12.5 pF,70 Kohm,SMD ,3.2*1.5*0.9 X101 X-TAL EXXY0018701 - 161 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 161 270 ohm,1/16W ,F ,1005 ,R/TP SPFY00 PCB,MAIN SPFY0229001 FR-4 ,1.0 mm,STAGGERED-6 ,GW200 ,; , , , , , , , , , - 162 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 162: Accessory
100-240V ,5060 Hz,4.8 V,.4 A,CE ,AC-DC ADAPTOR ,; ADAPTOR,AC-DC SSAD0034504 ,90Vac~264Vac ,4.8Vdc ,400mA ,5060 , ,WALL 2P ,USB - 16 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

LG -C300 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 Auto Calibration

Exploded View & Replacement

Part List

Quick Links

Related Manuals for LG LG-C300

Summary of Contents for LG LG-C300

Table of Contents