Page 1 Internal Use Only Service Manual LG-T500 Date: March, 2011 / Issue 1.0...
Page 2: Table Of Contents
4.8 Camera Trouble ................... 84 13.3 Accessory ..................171 4.9 Speaker / Receiver Trouble ............. 88 4.10 Earphone Trouble ................91 LGE Internal Use Only - - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 4 • When returning system boards or parts like EEPROM to the factory, use the protective package as described. LGE Internal Use Only - 4 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 5: Abbreviations
International Portable User Identity Intermediate Frequency Liquid Crystal Display Low Drop Output Light Emitting Diode OPLL Offset Phase Locked Loop LGE Internal Use Only - 5 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 6 Time Division Multiple Access UART Universal Asynchronous Receiver/Transmitter Voltage Controlled Oscillator VCTCXO Voltage Control Temperature Compensated Crystal Oscillator Wireless Application Protocol LGE Internal Use Only - 6 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 7: Performance
EAR Phone Jack Yes (3.5 ) PC Synchronization Speech coding EFR/FR/HR Data and Fax Vibrator Loud Speaker Voice Recoding Microphone LGE Internal Use Only - 7 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 8 SW MIDI (Mono SPK) Camera 2.0M FF Bluetooth / FM Radio Bluetooth version 2.1 / Wired FM radio (Earphone needed) LGE Internal Use Only - 8 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 9: Technical Specification
Power Toler. 30dBm 14dBm 28dBm 12dBm 26dBm 10dBm 24dBm 8dBm 22dBm 6dBm 20dBm 4dBm 18dBm 2dBm 16dBm 0dBm LGE Internal Use Only - 9 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 10 6,000 GSM850/ EGSM Offset from Carrier (kHz). Max. dBm Output RF Spectrum (due to switching transient) 1,200 1,800 LGE Internal Use Only - 10 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 11 3 dB 12 3 dB Frequency (Hz) Max.(dB) Min.(dB) 1,000 Sending Response 2,000 3,000 3,400 4,000 4 3 dB LGE Internal Use Only - 11 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 12 At least 55 dBspl under below conditions: Ringer Volume 1. Ringer set as ringer. 2. Test distance set as 1 m LGE Internal Use Only - 1 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 13 Battery full charge voltage = 4.2 V Capacity: 950mAh Switching-mode charger Travel Charger Input: 100 ~ 240V, 50/60 Hz Output: 4.8V, 400mA LGE Internal Use Only - 13 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 14: Technical Brief
3. TECHNICAL BRIEF 3. TECHNICAL BRIEF TECHNICAL BRIEF 3.1 Digital Main Processor Figure. 3.1.1 X-Gold tm 215 Hardware Block Diagram LGE Internal Use Only - 14 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 15 – SB-ADPCM – MP3 – WB-AMR – AAC/AAC+/eAAC+ • Others: – DARP (SAIC) – TTY • Customization: – E-Fuses LGE Internal Use Only - 15 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 16: External Memory
– FM Stereo RDS Receiver – Sensitivity 2 V EMF – Support for US & EU bands – Stereo recording LGE Internal Use Only - 16 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 17: Main Lcd Display
• HW JPEG encoder (39 Mpx/sec) • 39 MHz Pixel Rate • 15 fps@ 2 Mpx full resolution LGE Internal Use Only - 17 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 18 – 64 voices MIDI, SP-MIDI – FM synthesizer • AMR-WB • True ring tones (MP3) • MP3, eAAC+ • G.722 SB-ADPCM encoding/decoding LGE Internal Use Only - 18 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 19: Power Management
1.8V memory is used. The efficiency of the DC/DC converter is optimized for an average load current of 100mA. That is the load current estimated for the GSM talk mode. LGE Internal Use Only - 19 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 20 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. LGE Internal Use Only - 0 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 22 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 LGE Internal Use Only - - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 23 3. TECHNICAL BRIEF Figure.3.2.1 First Part of the State Machine, Running in Different Power Domains than the Second Part LGE Internal Use Only - 3 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 24 3. TECHNICAL BRIEF Figure 3.2.2 Second (Main) Part of the Startup State Machine in the VPMU Domain LGE Internal Use Only - 4 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 25 HPBG on state and the system starts. This state change is indicated to the charger state-machine to enable the charger watchdog for safety LGE Internal Use Only - 5 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 26 LCORE core regulator and wait for the core to reach reset state before powering up the I/O supply regulators. LGE Internal Use Only - 6 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 27 3. TECHNICAL BRIEF Figure 3.2.3 Start Up Sequence (triggered by First Connect Event) LGE Internal Use Only - 7 - Copyright © 011 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 LGE Internal Use Only - 8 - Copyright © 011 LG Electronics. Inc. All right reserved. 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. LGE Internal Use Only - 9 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 30 10 MHz. This oscillator is running during charging and during battery measurements triggered by the PMU. It is off otherwise. LGE Internal Use Only - 30 - Copyright © 011 LG Electronics. Inc. All right reserved. 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 . LGE Internal Use Only - 31 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32: Fem With Integrated Power Amplifier Module
The RF7171 also integrates an ESD filter to provide ESD protection at the antenna port. The RF7171 is designed to provide maximum efficiency at rated Pout. LGE Internal Use Only - 3 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 33 C122 L110 O2-2 RF_LB_RXP 100p GSM850/DCS L116 L111 L112 6.8n L113 15n RF_LB_RXN Figure 3.3.3 FEM CIRCUIT DIAGRAM LGE Internal Use Only - 33 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34: Crystal(6 Mhz, X01)
(LUXO). The LUXO calculates the corresponding DIG value according to the given AFC value. LGE Internal Use Only - 34 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 35: Rf Subsystem Of Pmb8815 (U01)
DCS1800 or PCS1900 A block diagram of the RF subsystem is given in Figure 3 5 1 high band, DCS1800 or PCS1900. A block diagram of the RF subsystem is given in Figure 3-5-1. LGE Internal Use Only - 35 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 36 DC offset removal and programmable gain control. Figure. 3.5.2 RECEIVER CHAIN BLOCK DIAGRAM LGE Internal Use Only - 36 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 37 LGE Internal Use Only - 37 - - 37 - Copyright © 011 LG Electronics. Inc. All right reserved. Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes Only for training and service purposes...
Page 38 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 LGE Internal Use Only - 38 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 39 LGE Internal Use Only - 39 - - 39 - Copyright © 011 LG Electronics. Inc. All right reserved. Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes Only for training and service purposes...
Page 40: Memory(H9DaGh1Ghmmmr, U301)
40% and erase time to be reduction by 50%. In case of multi-plane operation, there is small degradation at 1.8V application in terms of program/erase time.. LGE Internal Use Only - 40 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 41 - 10 Year Data retention • ONFI 1.0 COMFLIANT COMMAND SET ELECTRICAL SIGNATURE - Munufacture ID: ADh - Device ID LGE Internal Use Only - 41 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 42 • Burst Length - Programmable burst length 2 / 4 / 8 with both sequential and interleave mode LGE Internal Use Only - 4 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 44: Receiver Path
For integrated handset operation where the 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. LGE Internal Use Only - 44 - Copyright © 011 LG Electronics. Inc. All right reserved. 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. LGE Internal Use Only - 45 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46: Lcd Interface
Gray scale or the brightness of the dots Color is determined with a 6 bit gray scale signal for each dot, thus, presenting a palette of More than 262,144 colors. LGE Internal Use Only - 46 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 47 Users can easily configure LDO output voltage via the I2C interface control. The LDOs also provide current limiting and over-temperature functions. The RT9396 is available in a WQFN-24L 3x3 package. LGE Internal Use Only - 47 - Copyright © 011 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. LGE Internal Use Only - 48 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 49: Miniabb (Battery Charger & Muic) Interface
PMU(Power Management Unit)when an external power source(either USB VBUS or wall adapter) is connected to the USB connector. LGE Internal Use Only - 49 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50: Keypad Interface
(or key combination) that was pressed and how long it was pressed. LGE Internal Use Only - 50 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 51 3. TECHNICAL BRIEF Figure 3-11-3 Block Diagram and System Integration of the KPD LGE Internal Use Only - 51 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 52: Audio Interface
• Analog part The following figure shows an architecture overview of the Audio section. Figure 3.12.1 Audio Section Overview LGE Internal Use Only - 5 - Copyright © 011 LG Electronics. Inc. All right reserved. 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®. LGE Internal Use Only - 53 - Copyright © 011 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. LGE Internal Use Only - 54 - Copyright © 011 LG Electronics. Inc. All right reserved. 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 LGE Internal Use Only - 55 - Copyright © 011 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. LGE Internal Use Only - 56 - Copyright © 011 LG Electronics. Inc. All right reserved. 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) LGE Internal Use Only - 57 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 58: Camera Interface(M 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 LGE Internal Use Only - 58 - Copyright © 011 LG Electronics. Inc. All right reserved. 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 LGE Internal Use Only - 59 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 60 C619 C620 7.5p TP601 VCAM_DIG_1V8 CAM_HSYNC VCAM_DIG_1V8 VCAM_ANA_2V8 C622 C623 C621 0.1u 0.1u 0.1u Figure 3-14 Camera circuit LGE Internal Use Only - 60 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 61: Touch Interface
The SX8650 separately biases each of these layers and converts the resistive values into (X,Y) coordinates. The channel pins are protected to VDD and GROUND. LGE Internal Use Only - 61 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 62 I2C_SCL I2C_SDA TOUCH_INT NIRQ TP400 C417 0.1u ENZY0020701 CN404 ZD402 ZD403 ZD404 ZD405 Figure 3-15-2 Touch Driver Block LGE Internal Use Only - 6 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 63: Trouble Shooting
GPRS QUAD TX DUAL RX MODULE U101 RF7171 Crystal, 26MHz Clock X201 TSX- 3225 RF Switch SW101 MS-156C LGE Internal Use Only - 63 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 64: Rx Trouble
Crystal Circuit (2) Check Mobile SW &TX module (3) Check PLL Control Re-download SW or Do calibration again LGE Internal Use Only - 64 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 65 SIM_IO SIM_CLK C231 SIM_CLK SIM_RST_N SIM_RST 0.1u 26MHz MSD_CMD MMCI_CMD MSD_D[0] MMCI_DAT_0 MSD_CLK MMCI_CLK Figure 4.2.2 Figure 4.2.3 LGE Internal Use Only - 65 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 66 O1-1 RF_HB_RXN 100p O1-2 O2-1 C122 L110 O2-2 RF_LB_RXP 100p GSM850/DCS L116 L111 L112 6.8n L113 15n RF_LB_RXN LGE Internal Use Only - 66 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 67 TP3(Low Band) Replace TX Module (U101) Signal is OK ? Mobile SW & TX Module is OK. EGSM Rx LGE Internal Use Only - 67 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68: Tx Trouble
Crystal Circuit (2) Check Mobile SW &TX Module (3) Check PLL Control Redownload SW or Do calibration again LGE Internal Use Only - 68 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 69 SIM_IO SIM_CLK SIM_CLK C231 SIM_RST_N 0.1u SIM_RST 26MHz MSD_CMD MMCI_CMD MSD_D[0] MMCI_DAT_0 MSD_CLK MMCI_CLK Figure 4.2.2 Figure 4.2.3 LGE Internal Use Only - 69 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 70 O1-1 RF_HB_RXN 100p O1-2 O2-1 C122 L110 O2-2 RF_LB_RXP 100p GSM850/DCS L116 L111 L112 6.8n L113 15n RF_LB_RXN LGE Internal Use Only - 70 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 71 Replace TX Module (U101) SW101 signal Replace SW101 same as TP1? Mobile SW & TX Module is OK. EGSM Tx LGE Internal Use Only - 71 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 72: Power On Trouble
4. TROUBLE SHOOTING 4.4 Power On Trouble TEST POINT Figure 4.1 LGE Internal Use Only - 7 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 73 VDDTDC VMMC_2V85 VUSB VDDRF2 VRF1 100K (1%) VDD_IO_1V8 R208 VBAT 5.6K C223 Figure 4.2 Power block of T500 LGE Internal Use Only - 73 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 74 Replace U201 and Re-download software Does it work properly? The phone will Replace the main board Properly operating. LGE Internal Use Only - 74 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 75: Charging Trouble
UART_RX MUIC_ACC_ID U401 UART_TX FB401 2.2K R406 AUD1 AUD2 VUSB_LDO_4V9 EXPDET VDD_IO_1V8 R410 C402 C403 I2C_SCL I2C_SDA MUIC_INT_N LGE Internal Use Only - 75 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 76 TP01 (Charging IC(U401))=5.1V ? Change the TA Battery is charged? Replace the main board Charging is properly operating LGE Internal Use Only - 76 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 77: Vibrator Trouble
4. TROUBLE SHOOTING 4.6 Vibrator Trouble TEST POINT Vibrator PAD / VB401 Figure 4.6 LGE Internal Use Only - 77 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 78 4. TROUBLE SHOOTING CIRCUIT MAIC IC (U2010 X202 CM315_12_5PF 32.768KHz C243 C244 VB401 L401 TP01 VIB_P C415 C416 L402 LGE Internal Use Only - 78 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 79 Is PWM Signal OK? Is the voltage at VB401 Replace the Pad (+) high? Replace vibrator Vibrator Working well ! LGE Internal Use Only - 79 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 80: Lcd Trouble
4. TROUBLE SHOOTING 4.7 LCD Trouble TEST POINT Figure 4.7 LGE Internal Use Only - 80 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 81 LDO3 LED4 LCD_LED_CA5 LDO2 LED5 LDO1 LED6 C607 C608 C609 C610 2.2u I2C_SCL I2C_SDA LCD_BL_CTRL LCD_PWM R606 100K LGE Internal Use Only - 81 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 82 4. TROUBLE SHOOTING Waveform Graph 4.7.1. LCD Backlight Control Signal Waveform Graph 4.7.2. LCD Data Waveform LGE Internal Use Only - 8 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 83 Check the Waveform of EMI filter ? (FL601,FL602,FL603) (FL601,FL602,FL603,TP606) Does LCD work Replace LCD module properly ? LCD working well ! LGE Internal Use Only - 83 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 84: Camera Trouble
4. TROUBLE SHOOTING 4.8 Camera Trouble TEST POINT Figure 4.8 LGE Internal Use Only - 84 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 85 LED4 TP01 LCD_LED_CA5 LDO2 LED5 LDO1 LED6 C607 C608 C609 C610 2.2u I2C_SCL I2C_SDA LCD_BL_CTRL LCD_PWM R606 100K LGE Internal Use Only - 85 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 86 Graph 4.8.1. I2C Data Waveform Graph 4.8.2. MCLK Waveform Graph 4.8.3.CAM_VSYNC vs. Graph 4.8.4.CAM_HSYNC vs. CAM_HSYNC Waveform CAM_PCLK Waveform LGE Internal Use Only - 86 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 87 Data pins on U602? Does Camera work Replace U201 or Change the board properly ? Camera working well ! LGE Internal Use Only - 87 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 88: Speaker / Receiver Trouble
M501 TP01 : C507 CN501 Speaker TP02 : C508 contact U201 BB chip TP05: L504 TP06 : L505 LGE Internal Use Only - 88 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 89 L505 RCV_N 0.1uH L507 0.1uH SPK_N ZD502 C534 C535 ZD501 C524 47pF 47pF C526 VA506 VA507 47pF 47pF LGE Internal Use Only - 89 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 90 Check the Audio signal Check the Audio signal Replace/Change the M501 L504,L505 L506,L507 (TP05,06) (TP07,08) Speaker Receiver Working well!! Working well!! LGE Internal Use Only - 90 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 91: Earphone Trouble
TP03 :FB507 Connector TP01 :C539 TP04 :FB508 U201 BB chip FB502 TP05: TP06: FB501 Headset MIC Resoldering points LGE Internal Use Only - 91 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 92: Lge Internal Use Only
R513 HS_HOOK_DET VIN+ R514 R521 C523 220K 100K 120p In case of absence of HOOK must be removed LGE Internal Use Only - 9 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 93: Lge Internal Use Only
Or change the the earphone? the earphone? M501(amp), U201(BB IC) Earphone will work properly LGE Internal Use Only - 93 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 94: Microphone Trouble
TP03 : C240 TP04 : C241 TP02 : R515 TP05 : R517 TP01 : C236 MIC201 Figure 4.12 LGE Internal Use Only - 94 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 95 C537 C528 MIC501 39pF TP05 R518 C529 MAIN_MIC_N 0.1u VA508 VA509 C530 C531 C532 C533 R519 2.2K R520 LGE Internal Use Only - 95 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 96 Is it a few tens mV AC? Check the soldering of Re-solder component R517, R518 (TP05,06) Microphone will work properly. LGE Internal Use Only - 96 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 97: Sim Card Interface Trouble
4. TROUBLE SHOOTING 4.12 SIM Card Interface Trouble TEST POINT Figure 4.13 LGE Internal Use Only - 97 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98 J301 PIN #1 GND1 SIM_RST_N SIM_DATA SIM_CLK Rsvd2 Rsvd1 C309 GND5 GND2 C310 C311 C312 GND4 GND3 0.1u LGE Internal Use Only - 98 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 99 Does it work Does it work Properly? Properly? SIM card is SIM card is properly working properly working. LGE Internal Use Only - 99 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 100: Micro Sd (Usd) Trouble
TP02 VA307 MSD_CLK TP03 MSD_D[0] TP03 MSD_D[1] G6 G4 G2 TP03 C317 C318 C319 C320 C321 TP01 C301 LGE Internal Use Only - 100 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 101 Check out MC_CLK & Re-download SW Data Timing(TP03) OK? Replace Micro SD Card Micro SD Card will work properly LGE Internal Use Only - 101 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 102: Bluetooth Trouble
C710 UART_RTS_N BT_UART_CTS TP701 BTCX_TXCONF GPIO_0 UART_CTS_N BT_UART_RTS TP703 GPIO_6 TP707 BT_WAKEUP_HOST GPIO_1 HUSB_DN BT_CLK_REQ GPIO_5 HUSB_DP R711 LGE Internal Use Only - 10 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 103 Check Bias Voltage U701 VDD_IO_1V8 Check RTC32K Replace C712 U701 Replace Check BT_CLK_26M U701 C713 BT will work properly LGE Internal Use Only - 103 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 104: Fm Radio Trouble
4.15 FM Radio Trouble TEST POINT TP3_ VA501 L501 TP1_ TP2_ C501 J501 C536 Q202 FM_ANT_C227 FM_ANT2_C229 M501 LNA_EN_L203 Figure 4.17 LGE Internal Use Only - 104 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 105 R220 R221 R222 C229 470n C227 FM_ANT_2 Q202 FM_ANT To Main Chipset! 330p D201 C230 R223 4.7K 470n LGE Internal Use Only - 105 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 106 Check Bias Voltage FM LNA (LNA_EN_L203) Replace Q202 A condition is good? Replace Check Bias Voltage U201 VDD_FMR(C225) FM_radio will work properly LGE Internal Use Only - 106 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 107: Touch Trouble
4. TROUBLE SHOOTING 4.16 Touch trouble TEST POINT LGE Internal Use Only - 107 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 108 R229 TP03 TP04 I2C_SDA I2C_SCL VDD_IO_1V8 TP01 TP401 U402 TOUCH_RST NRST I2C_SCL I2C_SDA TOUCH_INT NIRQ TP400 C417 0.1u LGE Internal Use Only - 108 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 109 Contact well CN404 touch panel and touch panel contact Resolder CN404 or replace touch panel Touch will work properly LGE Internal Use Only - 109 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 119 5. DOWNLOAD LG-T500 ‘LG-T500’ LG-T500 LG-T500 LG-T500 LG-T500 LG-T500 ‘LG-T500’ LG-T500 LGE Internal Use Only - 119 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 124: Circuit Diagram
C122 L110 O2-2 100p RF_LB_RXP DCS/PCS TX HIGH HIGH HIGH GSM850/DCS L116 L111 L112 6.8n L113 15n RF_LB_RXN LGE Internal Use Only - 124 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 125 PWRON R230 R229 I2C_SDA VDD_IO_1V8 I2C_SCL CN201 X202 CM315_12_5PF JTAG_TRST_N 32.768KHz JTAG_TDI C243 C244 JTAG_TMS JTAG_TCK JTAG_TDO RESET_N LGE Internal Use Only - 125 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 126 Rsvd1 C309 GND5 GND2 C310 C311 C312 GND4 GND3 0.1u no NFC R319 open short open R320 short LGE Internal Use Only - 126 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 127 PWR/HOLD TOUCH CONNECTOR ENZY0020701 CN404 SHIELD CAN R416 PWR_HOLD PWRON R417 100K D401 ZD402 ZD403 ZD404 ZD405 SC401 LGE Internal Use Only - 127 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 128 C550 VDD_REF 390p TOUCH_INT PENIRQ- I2C_SCL 1V8_VDD VAUX TP501 VA510 VA511 VA508 VA509 U502 R525 HS_HOOK_DETECT LMV331 EUSY0407701 LGE Internal Use Only - 128 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 129 CAM_F_DATA[5] INOUT_B2 INOUT_A2 CAM_DATA[6] CAM_F_DATA[6] INOUT_B3 INOUT_A3 CAM_DATA[7] INOUT_B4 INOUT_A4 CAM_F_DATA[7] 15pF C622 C623 C621 0.1u 0.1u 0.1u LGE Internal Use Only - 129 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 130 GPIO_6 TP707 BT_WAKEUP_HOST GPIO_1 HUSB_DN BT_CLK_REQ GPIO_5 HUSB_DP R711 BT only wifi R709 short open R710 open short LGE Internal Use Only - 130 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 131 7. CIRCUIT DIAGRAM KB101 CN101 F_SK_VOL VOL-UP KB101 KB102 CN101 VOL-DOWN LGE Internal Use Only - 131 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 132: Bga Pin Map
8. BGA PIN MAP BGA IC pin check (U201) • Ball Diagram (Top View), PMB8815(A-GOLDRADIO+) : not in use LGE Internal Use Only - 13 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 133 8. BGA PIN MAP BGA IC pin check (U201) Ball Diagram (Top View), H9DA2GH1GHMMMR-46M : not in use LGE Internal Use Only - 133 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 134: Pcb Layout
CN404 : Touch screen connector CN404 L507 ZD503 C534 - no touch screen FB501 L506 C535 ZD504 KB402 LG-T500_MAIN_EAX64005201_1.0_TOP LGE Internal Use Only - 134 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 135 - RF Sensitivity & TX Power MIC501 : MAIN MIC - no voice sending - no voice recording LG-T500_MAIN_EAX64005201_1.0_BOT LGE Internal Use Only - 135 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 140: Engineering Mode
[3-6] MemGenConf [6-9] FM Radio [3-7] MemAllUse [6-9-1] FM Radio Test [3-8] MemDetUse [3-9] MemDump [3-10] Change Frequency Band LGE Internal Use Only - 140 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 141: Stand Alone Test
LGE Internal Use Only - 141 - - 141 - Copyright © 011 LG Electronics. Inc. All right reserved. Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes Only for training and service purposes...
Page 142 11. STAND ALONE TEST 4. Click “Update Info” for communicating Phone and Test-Program Not Connected Connected LGE Internal Use Only - 14 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 143 6. Select “Non signaling” in the Quick Bar menu. Then Standalone Test setup is finished. Change “ptest mood” LGE Internal Use Only - 143 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 144: Tx Test
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. LGE Internal Use Only - 144 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 145: Rx Test
4. The Phone must be changed “normal mode” after finishing Test. 5. Change the Phone to “normal mode” and then Click the “Reset” bar. Change “normal mode “ LGE Internal Use Only - 145 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 146: Auto Calibration
GSM phone. 12.2 Tachyon Directory LGT500 LGT500/ LGT500 LGT500 LGT500 LGT500 LGE Internal Use Only - 146 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 147: 1.3 Test Equipment Setup
12.AUTO CALIBRATION 12.3 Test Equipment Setup 12.4 Procedure 1 .Turn on the Phone. 2. “/LGE/Tachyon/Tachyon.exe” LGE Internal Use Only - 147 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 150 6) System Option Setting 7) Running Option Setting 8) Voltage Current Setting 9) Show Result Window 10) Setting click LGE Internal Use Only - 150 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 151 12.AUTO CALIBRATION (2) Click “System Option Setting” Menu (3) Report Data LGE Internal Use Only - 151 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 153 12.AUTO CALIBRATION 8. Tachyon RF Calibration Start 9. Tachyon RF Calibration finishes. LGE Internal Use Only - 153 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 154: 1.5 Agc
Channel PCS 1900 Frequency 1850.2 MHz 1880 MHz 1909.8 MHz Max power 29.8 dBm 29.8 dBm 29.8 dBm LGE Internal Use Only - 154 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 155: Exploded View & Replacement Part List
MBK01 Can,Shield ADB00 EBP00 Camera Module GMEY00 Screw,Machine SBPL00 Mobile Phone Battery Li-Ion ABM00 SUMY00 MBK01 MCK00 Cover,Battery LGE Internal Use Only - 155 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 156: Replacement Parts
Cover Assembly, ACQ01 ACQ85466201 LGT500.ADEUBK BK:Black - Front MOLD PC LUPOY SC-1004A LGT500.ADEUBK MCR000000 Decor MCR64367801 BK:Black - LGE Internal Use Only - 156 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 157 RAA050100 Resin, PC BRAH0001301 UF-1060 WHVM-1030B10 WHVM-1030B10, 3 V, 80 mA, 10*3.0, SJMY00 Motor, DC SJMY0007108 12mm SEOUNGHYUN SMT LGE Internal Use Only - 157 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 158 0.03F, 3.8pi, Module Assembly PANASONIC INDUSTRIAL KOREA CO., LTD COMPLEX LG-VX6000 ZZ:Without Color PID Label 4 MEZ000000 Label MLAZ0038301 Array PRINTING, LGE Internal Use Only - 158 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 159 AAD000000 Addition Assembly AAD85815401 LGT500.ADEUBK BK:Black - MOLD PC LUPOY SC-1004A LGT500.ADEUBK MCK00 Cover, Battery MCK66592901 BK:Black - LGE Internal Use Only - 159 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 160: Main Component
Capacitor, C1005C0G1H1R5CT000F 1.5pF 0.25PF 50V NP0 - C708 ECZH0000822 Ceramic, Chip 55TO+125C 1005 R/TP - TDK KOREA COOPERATION LGE Internal Use Only - 160 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 161 Capacitor, C1005X7R1H331KT000F 0.33nF 10% 50V X7R - C227 ECCH0000137 Ceramic, Chip 55TO+125C 1005 R/TP - TDK KOREA COOPERATION LGE Internal Use Only - 161 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 162 55TO+125C 1005 R/TP - MURATA MANUFACTURING C310, Ceramic, Chip CO., LTD. C313, C314, C315, C401, C409, C414, C417, C527, C529 LGE Internal Use Only - 16 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 163 MCH155A180J 18pF 5% 50V NP0 -55TO+125C 1005 ECCH0000113 C244, Ceramic, Chip R/TP - ROHM Semiconductor KOREA CORPORATION C537 LGE Internal Use Only - 163 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 164 SEVY0003801 R/TP AMOTECH CO., LTD. VA601 MCR01MZP5J472 4.7KOHM 5% 1/16W 1005 R/TP - R318 Resistor, Chip ERHZ0000485 ROHM. LGE Internal Use Only - 164 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 165 MCH155A470JK 47pF 5% 50V NP0 -55TO+125C 1005 C240, ECCH0000122 Ceramic, Chip R/TP - ROHM Semiconductor KOREA CORPORATION C241, C413, C524, C526 LGE Internal Use Only - 165 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 166 U501 IC, Comparator EUSY0250501 R/TP, Comparator, pin compatible to EUSY0077701 - - SC70 R/TP 5P - ON SEMICONDUCTOR LGE Internal Use Only - 166 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 167 SEMICONDUCTOR ASIA PACIFIC PTE. LTD. R105, MCR01MZP5J102 1KOHM 5% 1/16W 1005 R/TP - R416, Resistor, Chip ERHZ0000404 ROHM. R780 LGE Internal Use Only - 167 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 168 Capacitor, GRM155R61A104K 0.1uF 10% 10V X5R -55TO+85C ECCH0000182 C538 Ceramic, Chip 1005 R/TP - MURATA MANUFACTURING CO., LTD. LGE Internal Use Only - 168 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 169 GRM188R60J106M 10000000 pF, 6.3V, M, X5R, TC, Capacitor, C520 ECCH0005604 1608, R/TP, 0.8 mm MURATA MANUFACTURING CO., Ceramic, Chip LTD. LGE Internal Use Only - 169 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 170 R/TP - ROHM Semiconductor KOREA CORPORATION MS-156C NONE STRAIGHT SOCKET SMD T/REEL AU SW101 Connector, RF ENWY0008701 50OHM 400mDB HIROSE KOREA CO., LTD LGE Internal Use Only - 170 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 171: Accessory
COMPLEX KP202 VDG ZZ:Without Color PRINTING, MBM087200 Card, Warranty MCDF0001110 (empty), COMPLEX LGT500.ADEUBK ZZ:Without Color LGT500 MFL053800 Manual, Operation MFL67202001 manual for DEU LGE Internal Use Only - 171 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...

LG -T500 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

13 Exploded View & Replacement Part List

Quick Links

Related Manuals for LG LG-T500

Summary of Contents for LG LG-T500

Table of Contents