Page 1 Internal Use Only Service Manual LG-T310i Date: September, 2010 / Issue 1.0...
Page 2: Table Of Contents
4.8 Camera Trouble ................84 4.9 Speaker / Receiver Trouble ............88 4.10 Earphone Trouble ..............91 4.11 Microphone Trouble ..............94 - - 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. 6/147 - 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 7/147 - 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 PC Synchronization Speech coding EFR/FR/HR Data and Fax Vibrator Loud Speaker Voice Recoding Microphone 9/147 - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 9 MIDI SW MIDI (Mono SPK) Camera 2.0M FF Bluetooth / FM Radio Bluetooth version 2.1 / 76~108MHz supported - 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 11/147 - 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 12 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, 400mA - 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 Digital Main Processor Figure. 3.1.1 X-Gold tm 213 Hardware Block Diagram Figure. 3.1.1 X-Gold tm 213 Hardware Block Diagram 16/147 - 16 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 16 – GEA-1/2/3 • Security: – OMTP TR0 – Secure Boot – RSA(ROM)/SHA-1(HW accel.) – OCDS disabling – Certificate Management - 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 battery charging – USB charging spec 1.0 compliant • Backlight – Up to 4 serial white LEDs (integrated LDO) - 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) - 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 - 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. - 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 - 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. - 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 - 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. - 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
Additionally, a VBATT tracking feature is incorporated to maintain switching performance as supply voltage decreases. maintain switching performance as supply voltage decreases. - - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 33 HIGH RX3(PCS_RX) HIGH HIGH RX4(DCS_RX) HIGH GSM850/900_TX HIGH HIGH DCS/PCS_TX HIGH HIGH HIGH Figure 3.3.3 FEM CIRCUIT DIAGRAM - 4 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34: Crystal(26 Mhz, X100)
This predistortion is performed by the linearization unit for crystal oscillator (LUXO). The LUXO calculates the corresponding DIG value according to the given AFC value. - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 35: 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 3-4-1. - 6 - LGE Internal Use Only Copyright © 2010 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 - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 37 The 26 MHz reference signal of the phase detector incorporated in the PLL is provided by the reference oscillator. - 8 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. 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 - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 39 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 - 40 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 40: Memory(Pf8F5066M0YDe, U101)
(legacy-latching) on some litho/density combinations and up to 133 MHz using CLK address-latching only on some litho/density combinations. It is listed below in the following table. - 41 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 41 • 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 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 42: Wifi Module
Along with the integrated power amplifiers, the BCM4329 includes integrated transmit and receive baluns to further reduce overall cost. - 4 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 43 • Integrated power amplifier, baluns and LNA to meet the requirements of most handheld system (option to support external FEM) - 44 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 44: 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. - 45 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 45: Lcd Interface
In combination with the vertical arrangement of the sub-pixels, the LS028Q3UW01 characteristics provide an High quality display for mobile phone application. - 46 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46 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. - 47 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 47 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. - 48 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 48: Battery Charger Interface
90mA or 400mA through one wire interface. The RT9524 is available in the tiny 10pin 2mm by 3mm TDFN package. - 49 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 49: Keypad Interface
(or key combination) that was pressed and how long it was pressed. - 50 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF Figure 3-11-3 Block Diagram and System Integration of the KPD - 51 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 51: Audio Interface
• Analog part The following figure shows an architecture overview of the Audio section. Figure 3.12.1 Audio Section Overview - 52 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 52 100% by Firmware. • The high-pass functions of the voiceband filters have to be implemented in firmware on TEAKLite®. - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 53 Loudspeaker driver, b) one mono, differential Earpiece driver and c) one stereo, single-ended (with uni- or bipolar signals), Headset driver. - 54 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 54 The buffers are designed to be short circuit protected. Figure 3.12.3 Switching for R/L DACs onto Buffers - 55 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 55 To improve SNR the sample frequency can be doubled in dedicated modes and the modulated data stream is 4MHz instead of 2 MHz. - 56 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 56 In case of an digital microphone VMIC can be used for supplying this microphone. Figure 3.12.5 Typical Microphone Supply Generation (alternative) - 57 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 57: 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 - 58 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 58 • Color processing (contrast, saturation, brightness, hue) • Power management by software controlled clock disabling of currently not needed sub-modules - 59 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 59: Touch Interface
X-position, Y- position and Zposition of ADC conversion per serial interface write and read commands after finishing the all of ADC conversion. - 60 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 60: Vibrator Interface
These features fast turn on time, and a wide input voltage range for precise speed control. A low power shutdown mode minimizes power consumption. Figure 3-15-1 Vibrator Driver Block Diagram - 61 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 61 TP310 VIB_PWM PWM/CLK VB301 VIB_EN PGND R315 C337 GAIN C321 0.1u C338 Figure 3-15-2 Touch &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
U102 PMB8810(XMM213) GPRS QUAD TX MODULE U404 RF7161 Crystal, 26MHz Clock X102 DSX321G-26M(8PF) RF Switch SW401 NMS-306(RF500) 64/147 - 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 Close to the 26MHz XTAL UART_RX USIF1_RXD_MRST X102 DSX321G-26M BT_RXD USIF1_RTS_N BT_TXD USIF1_CTS_N USB_DP DPLUS USB_DM DMINUS 26MHz 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 L410 IN_881_5 OUT_881_5 C467 EGSM L407 IN_942_5 OUT_942_5 L406 RX12 GND1 GND2 8.2n 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 TX Module (U404) 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
Crystal Circuit (2) Check Mobile SW &TX Module (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 Close to the 26MHz XTAL UART_RX USIF1_RXD_MRST BT_RXD X102 DSX321G-26M USIF1_RTS_N BT_TXD USIF1_CTS_N USB_DP DPLUS USB_DM DMINUS 26MHz 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 L410 IN_881_5 OUT_881_5 C467 EGSM L407 IN_942_5 OUT_942_5 L406 GND1 GND2 RX12 8.2n 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 TX Module (U404) TP5 signal same as Replace SW401 TP1? EGSM Tx Mobile SW & TX Module 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
TEST POINT VMMC VAUX VDDTDC VDDXO U102 VPMU VDDMS . . . VDDTRX VRF1 VDD_VRF2 VCORE Figure 4.1 - 72 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 72 C139 R119 LCD_ID R111 R112 100K Figure 4.2 Power block of LG-T310i Figure 4.2 power block of T310 - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 73 Replace U102 and 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
GND2 CHG_EN IEOC EN_SET C224 C225 R227 R228 C223 1.2K C255 0.1u 3.9K 0.1u (25V) (10V) Ichg=530/Riset=481.8mA Ieoc=Rieoc/200=19.5%(93.95mA) - 75 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 75 TP01 (Charging IC(U201))=5.1V ? Change the TA 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 / VB301 U301 TP310 Figure 4.6 - 77 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 77 TOUCH_EN TP309 TOUCH_INT INTB TP310 VIB_PWM PWM/CLK VB301 TP10 VIB_EN PGND R315 C337 GAIN C321 0.1u C338 TP310 - 78 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 78 Is PWM Signal OK? Is the voltage at VB301 Replace U302 (+) 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
TP301 : LCD RS TP305 (LCD CN303 DATA0) FL301 : LCD DATA 0~3 FL303 : LCD DATA 4~7 Figure 4.7 - 80 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 80: Lcd Display
C336 C328 C335 C327 C326 2.2u 2.2u 2.2u 2.2u I2C_SCL I2C_SDA LCD_BL_CTRL LED_PWM R318 C330 100K 0.1u TP07 - 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 EMI filter ? (FL301,FL302,FL303) (FL301,FL303,TP301~TP304) 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
TP04 : C331 TP01 : C336 TP02 : C328 TP08 : R124 TP07 : U102 R123 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
C328 C335 C327 C326 2.2u 2.2u 2.2u 2.2u TP07 TP08 I2C_SCL I2C_SDA LCD_BL_CTRL LED_PWM R318 C330 100K 0.1u - 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 Camera socket pin ? Does Camera work Replace U102 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 / Receiver Trouble
TP01 : C212 . .. TP05 : FB208 TP02 : C213 TP04 : C248 TP03 :C U102 BB chip - 88 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 88 TP04 CPVSS R201 R204 C218 2.2u 1V8_VDD C210 I2C_SCL 2.2u I2C_SDA FB210 C211 C209 2.2u 0.1u R205 EAR_GND - 89 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 89 Check the Audio signal Check the Audio signal Replace/Change the U202 FB208,FB209 FB208,FB209 (TP05,06) (TP05,06) Speaker Speaker Working well!! Working well!! - 90 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 90: Earphone Trouble
FB211 C246 Connector TP04 : TP01 : FB204 C245 L204 L203 U102 BB chip Headset MIC Resoldering points - 91 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 91 C236 U204 120pF VHSMIC C242 560pF R226 HS_MIC_N 2.2Kohms C240 10pF 0.022uF HS_MIC_P C241 C203 2.2uF 560pF R239 - 92 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 92 From the From the Or change the and try again earphone? earphone? U202(amp), U102(BB IC) Earphone 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
REPLACE WITH BSE VREF C148 0.1u MIC_N C110 VSSRF2 TP05 220n TP03 TP04 C261 VA215 VSSCORE4 TP01 MIC_GND TP05 U102 - 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 Re-solder component C147, C148 (TP06,05) 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
PIN #1 TP01 USD_D2 MMCI_DAT_2 USD_D3 MMCI_DAT_3 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: Micro Sd (Usd) Trouble
47ohms USD_D0 DAT0 USD_D1 DAT1 COVER_DETECT1 TP01 1V8_VDD TP01 C249 C250 TP02 TP02 R236 2.2uF 100Kohms C251 0.001uF - 98 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98 Check out MC_CLK & Re-download SW Data Timing(TP03) OK? Replace Micro SD Card Micro SD Card will work properly - 99 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 99: Bluetooth Trouble
Setup Test Equipment START Check point Clock Check point POWER Check point Module Figure 4-14. WI-FI/BT Module Component Change - 100 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 100 VOUT 26MHz CLK_REQ TG-5010LH-87N C419 R404 C417 C418 100K TP2 (26MHz) TP1 (CLK_REQ) Figure 4-16. WI-FI/BT Clock Circuit - 101 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 101 C472 C473 C474 C475 C476 UART_RX 4.7u 4.7u 4.7u R401 1V8_VDD C408 0.1u Figure 4-14-3. WI-FI/BT MODULE Circuit - 102 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 102: Fm Radio Trouble
4.15 FM Radio Trouble TEST POINT TP4_L417 TP5_L401 Q402 Q401 TP3_C239 CN201 TP2_C237 TP6_C228 TP1_L201 TP7_C234 TP8_R212 U203 J201 Figure 4.17 - 10 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 103 470n Q401 FEED 470n ANT402 C486 C427 ZD401 C490 R425 DNI_DIODE_1006 C428 R408 470n 4.7K 470n 4.7K FM_ANT - 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? Replace U102 A condition is good? Check Bias Voltage Replace VDD_FMR(C124) U102 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 105: Touch Trouble
TP07 : ZD308 TP08 : ZD309 TP06 : ZD307 CN304 TP05 :ZD306 TP04 : R124 TP03 : R123 U102 - 106 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 106 I2C_SCL SADD TOUCH_EN TP309 TOUCH_INT INTB TP310 VIB_PWM PWM/CLK VB301 VIB_EN PGND R315 C337 GAIN C321 0.1u C338 - 107 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 107 Contact well CN304 touch pannel and touch pannel contact Resolder CN304 or replace touch pannal Touch will work properly - 108 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 117 5. DOWNLOAD LG-T10i ‘LG-T10i’ LG-T10i LG-T10i LG-T10i LG-T10i LG-T10i ‘LG-T10i’ LG-T10i - 118 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 121: Block Diagram
6. BLOCK DIAGRAM 6. BLOCK DIAGRAM 6. Blck Diagram 6.Block Diagram Touch LGE Internal Use Only - 122 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 122: Circuit Diagram
X101 LCD_RESET OUT2 IO_EXPANDER1 EN_SET NX3215SA 32.768KHz OUT3 VIB_EN C108 C121 OJ101 OJ102 OUT4 FM_LNA_EN C145 CAM_RESET OUT5 Copyright © 2010 LG Electronics. Inc. All right reserved. - 123 - LGE Internal Use Only Only for training and service purposes...
Page 123 C211 ( USB & TA &UART ) C209 2.2u 0.1u MUIC_DM MUIC_DP MUIC_ID R205 EAR_GND D202 D201 SC201 LGE Internal Use Only - 124 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 124 TP310 VIB_PWM KEY_ROW3 PWM/CLK VB301 R326 VIB_EN D304 D305 D306 PGND D303 R315 C337 C321 GAIN 0.1u C338 Copyright © 2010 LG Electronics. Inc. All right reserved. - 125 - LGE Internal Use Only Only for training and service purposes...
Page 125 TCXO LDO VDD_TCXO VBAT VDD_TCXO X401 U402 FM_ANT XTALP VOUT 26MHz CLK_REQ TG-5010LH-87N C419 R404 C418 C417 100K LGE Internal Use Only - 126 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 126: Bga Pin Map
8. BGA PIN MAP BGA IC pin check (U102) Ball Diagram (Top View), PMB8810(A-GOLDRADIO+) : not in use - 127 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 127 8. BGA PIN MAP BGA IC pin check (U101) Ball Diagram (Top View), PF38F5060M0Y3DF : not in use - 128 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 128: Pcb Layout
C240 CON304 : Touch screen connector VA203 CN304 ZD307 ZD306 - no touch screen KB301 KB302 KB303 LG-T310i-MAIN-SPFY0230301-1.0-TOP Copyright © 2010 LG Electronics. Inc. All right reserved. - 129 - LGE Internal Use Only Only for training and service purposes...
Page 129 - no Power On - no Service MIC201 : MAIN MIC - no voice sending - no voice recording LG-T310i-MAIN-SPFY0230301-1.0-BOT LGE Internal Use Only - 130 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 130: 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 - 11 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 131: Stand Alone Test
11.2 Setting Method 1. Set COM Port 2. Check PC Bau Rate 3. Confirm EEPROM & Delta file prefix name - 12 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 132 11. STAND ALONE TEST 10. STAND ALONE TEST Not Connected Connected 4. Click “Update Info” for communicating Phone and Test-Program - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 133 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. - 14 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 134 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. - 15 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 135: 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. - 16 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 136: Auto Calibration
LG-T310i LG-T310 Spec_LGT310_001 LG-T310i Setup_Cal_Parameter_001 script_001 PwrSupply_Cmd Procedure_LGT310_001 LG-T310i Ezlooks AutoSetup_LGT310_001 LG-T310i 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_GD350_001.xml : Definition Module of Auto Test Spec LG-T310i -. 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 “T310” “T10i” LG-T10i Model name Start button 12. Click “start” button LG-T10i - 141 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 141: Agc
Channel PCS 1900 Frequency 1850.2 MHz 1880 MHz 1909.8 MHz Max power 29.3 dBm 29.3 dBm 29.3 dBm - 142 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 142: Exploded View & Replacement Part List
MWAC00 MTAD00 ACGK00 AKAC00 SVLM00 SAFY00 SPKY00 SNGF00 MCBA01 SJMY00 SVCY00 MCJA00 SUSY00 MCBA00 GMEY00 ADCA00 SBPL00 SUMY00 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
COMPLEXLGT310.ATURBKBK:Black- COMPLEXC2000CGRSVWA:WhiteC2000USASVDIA4.0 MLAB Label,AfterService MLAB0001102 PRINTING, MPBJ00 Damper,Motor MPBJ0076201 COMPLEXLG-T310VIVBKZZ:WithoutColor- MPBT00 Damper,Camera MPBT0095501 COMPLEXLG-T310VIVBKZZ:WithoutColor- MPBU00 Damper,Connector MPBU0103101 COMPLEXLG-T310VIVBKZZ:WithoutColor- - 145 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 145 COMPLEXLG- MTAZ00 Tape MTAZ0364201 T310VIVBKGN:GreenCOMPLEX,(empty),,,,, MWAC00 Window,LCD MWAC0144901 COMPLEXLG-T310VIVBKZZ:WithoutColor- GMEY0014301BH+1.4mM3.5mMMSWRNIPLTN- GMEY00 Screw,Machine GMEY0014301 KUMGANGSCREWCO.,LTD MLAA00 Label,Approval MLAA0062301 COMPLEXKB770DEUBKZZ:WithoutColor- - 146 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 146 SMZY00 *S*SMZY0027202 C02G2CYBMicroSDCard/2GB(MLCNAND16Gbx1),Modu MINISD leAssembly,TOSHIBA CS2GLC- IC,MemoryCard, SMZY00 *S*SMZY0018303 02B2GBYTE2.7VTO3.6VMICROSDCARD15.0x11.0x0.7 MICROSD MMBK8P-LGELECTRONICSINC. IC,MemoryCard, KT02GSMLAMKT02GSMLAM,2GB/MICROSD/MICRON SMZY00 *S*SMZY0017703 MICROSD MLC2DIESKINGMAXDIGITALINC. - 147 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 147: Accessory
U35ER90Vac~264Vac4.8V400mA5060CENONENONE- SUNLINELECTRONICSCO.,LTD SSAD00 Adapters *S*SSAD0034502 90Vac~264Vac4.8V400mA5060CENONENONE- STA- SSAD00 Adapters *S*SSAD0034504 U35ES90Vac~264Vac4.8V400mA5060CENONENONE- SALCOMPOY STA- SSAD00 Adapters *S*SSAD0034503 U35ED90Vac~264Vac4.8V400mA5060CENONENONE- DONGDOELECTRONICSCO.,LTD - 148 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

LG -T310i 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

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Summary of Contents for LG LG-T310i

Table of Contents