Page 1 Internal Use Only Service Manual LG-T315i Date: February, 2011 / Issue 1.0...
Page 2: Table Of Contents
4.8 Camera Trouble ..................8 13.3 Accessory .....................159 4.9 Speaker / Receiver Trouble ..............86 4.10 Earphone Trouble ................89 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. 6/147 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 7/147 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 PC Synchronization Speech coding EFR/FR/HR Data and Fax Vibrator Loud Speaker Voice Recoding Microphone 9/147 LGE Internal Use Only - 7 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 8 MIDI SW MIDI (Mono SPK) Camera 2.0M FF Bluetooth / FM Radio Bluetooth version 2.1 / 76~108MHz supported LGE Internal Use Only - 8 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 9: Technical Specification
Toler. 30dBm 14dBm 28dBm 12dBm 26dBm 10dBm 24dBm 8dBm 22dBm 6dBm 20dBm 4dBm 18dBm 2dBm 16dBm 0dBm 11/147 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: 900mAh 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
3.1 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 LGE Internal Use Only - 14 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 15 – GEA-1/2/3 • Security: – OMTP TR0 – Secure Boot – RSA(ROM)/SHA-1(HW accel.) – OCDS disabling – Certificate Management LGE Internal Use Only - 15 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 16: 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 LGE Internal Use Only - 16 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 17: Power Management
• USB battery charging – USB charging spec 1.0 compliant • Backlight – Up to 4 serial white LEDs (integrated LDO) LGE Internal Use Only - 17 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 18: Main Lcd Display
– 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
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 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 21 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF Table. 3-2-1 Power supply Domains (without RF) LGE Internal Use Only - 1 - 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 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 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. LGE Internal Use Only - 5 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 26 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF Figure 3.2.3 Start Up Sequence (triggered by First Connect Event) LGE Internal Use Only - 6 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 27 In testmode signal reset_pmu_n_o is high, that means the chip reset is fully controlled from external. LGE Internal Use Only - 7 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 28 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 - 8 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 29 That means all PMU register are reset in OFF state. For details about the SW reset see chapter External Reset Handling LGE Internal Use Only - 9 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 30 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 - 30 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 31: 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. LGE Internal Use Only - 31 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32 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 LGE Internal Use Only - 3 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 33: Crystal(6 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. LGE Internal Use Only - 33 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34: Rf Subsystem Of Pmb8810 (U10)
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. LGE Internal Use Only - 34 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 35 DC offset removal and programmable gain control. Figure. 3.5.2 RECEIVER CHAIN BLOCK DIAGRAM LGE Internal Use Only - 35 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 36 The 26 MHz reference signal of the phase detector incorporated in the PLL is provided by the reference oscillator. LGE Internal Use Only - 36 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 37 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 - 37 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 38 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 LGE Internal Use Only - 38 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 39: Memory(Pf38F5066M0Y3De, 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. LGE Internal Use Only - 39 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 40 • 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. LGE Internal Use Only - 40 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 41: Wifi Module
Along with the integrated power amplifiers, the BCM4329 includes integrated transmit and receive baluns to further reduce overall cost. LGE Internal Use Only - 41 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 42 • Integrated power amplifier, baluns and LNA to meet the requirements of most handheld system (option to support external FEM) LGE Internal Use Only - 4 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 43: 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 - 43 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 44: Lcd Interface
In combination with the vertical arrangement of the sub-pixels, the LS028Q3UW01 characteristics provide an High quality display for mobile phone application. LGE Internal Use Only - 44 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 45 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 - 45 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46 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 - 46 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 47: Battery Charger Interface
90mA or 400mA through one wire interface. The RT9524 is available in the tiny 10pin 2mm by 3mm TDFN package. LGE Internal Use Only - 47 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 48: Keypad Interface
(or key combination) that was pressed and how long it was pressed. LGE Internal Use Only - 48 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 49 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF Figure 3-11-3 Block Diagram and System Integration of the KPD LGE Internal Use Only - 49 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50: 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 - 50 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 51 100% by Firmware. • The high-pass functions of the voiceband filters have to be implemented in firmware on TEAKLite®. LGE Internal Use Only - 51 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 52 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 - 5 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 53 The buffers are designed to be short circuit protected. Figure 3.12.3 Switching for R/L DACs onto Buffers LGE Internal Use Only - 53 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 54 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 - 54 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 55 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 - 55 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 56: 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 - 56 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 57 • Color processing (contrast, saturation, brightness, hue) • Power management by software controlled clock disabling of currently not needed sub-modules LGE Internal Use Only - 57 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 58: 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. LGE Internal Use Only - 58 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 59: 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 LGE Internal Use Only - 59 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 60 TP310 VIB_PWM PWM/CLK VB301 VIB_EN PGND R315 C337 GAIN C321 0.1u C338 Figure 3-15-2 Touch &Vibrator Driver Block LGE Internal Use Only - 60 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 61: 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 LGE Internal Use Only - 61 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 62: 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 - 6 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 63 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 LGE Internal Use Only - 63 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 64 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 LGE Internal Use Only - 64 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 65 TP3(Low Band) Replace TX Module (U404) Signal is OK ? EGSM Rx Mobile SW & TX Module is OK. LGE Internal Use Only - 65 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 66: Tx Trouble
Crystal Circuit (2) Check Mobile SW &TX Module (3) Check PLL Control Redownload SW or Do calibration again LGE Internal Use Only - 66 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 67 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 LGE Internal Use Only - 67 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68 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 LGE Internal Use Only - 68 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 69 Replace TX Module (U404) TP5 signal same as Replace SW401 TP1? EGSM Tx Mobile SW & TX Module is OK. LGE Internal Use Only - 69 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 70: Power On Trouble
TEST POINT VMMC VAUX VDDTDC VDDXO U102 VPMU VDDMS . . . VDDTRX VRF1 VDD_VRF2 VCORE Figure 4.1 LGE Internal Use Only - 70 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 71 C139 R119 LCD_ID R111 R112 100K Figure 4.2 Power block of LG-T315i Figure 4.2 power block of T310i LGE Internal Use Only - 71 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 72 Replace U102 and Re-download software Does it work properly? The phone will Replace the main board Properly operating. LGE Internal Use Only - 7 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 73: 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) LGE Internal Use Only - 73 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 74 TP01 (Charging IC(U201))=5.1V ? Change the TA Battery is charged? Replace the main board Charging is properly operating LGE Internal Use Only - 74 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 75: Vibrator Trouble
4. TROUBLE SHOOTING 4. TROUBLE SHOOTING 4.6 Vibrator Trouble TEST POINT Vibrator PAD / VB301 U301 TP310 Figure 4.6 LGE Internal Use Only - 75 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 76 TOUCH_EN TP309 TOUCH_INT INTB TP310 VIB_PWM PWM/CLK VB301 TP310 VIB_EN PGND R315 C337 GAIN C321 0.1u C338 TP310 LGE Internal Use Only - 76 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 77 Is PWM Signal OK? Is the voltage at VB301 Replace U302 (+) high? Replace vibrator Vibrator Working well ! LGE Internal Use Only - 77 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 78: Lcd Trouble
TP301 : LCD RS TP305 (LCD CN303 DATA0) FL301 : LCD DATA 0~3 FL303 : LCD DATA 4~7 Figure 4.7 LGE Internal Use Only - 78 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 79: 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 LGE Internal Use Only - 79 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 80 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 LGE Internal Use Only - 80 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 81 Check the Waveform of EMI filter ? (FL301,FL302,FL303) (FL301,FL303,TP301~TP304) Does LCD work Replace LCD module properly ? LCD working well ! LGE Internal Use Only - 81 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 82: Camera Trouble
TP04 : C331 TP01 : C336 TP02 : C328 TP08 : R124 TP07 : U102 R123 Figure 4.8 LGE Internal Use Only - 8 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 83 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 LGE Internal Use Only - 83 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 84 Graph 4.8.2. MCLK Waveform CAM_HSYNC CAM_VSYNC CAM_HSYNC 26MHz CAM_PCLK Graph 4.8.3.CAM_VSYNC vs. Graph 4.8.4.CAM_HSYNC vs. CAM_HSYNC Waveform CAM_PCLK Waveform LGE Internal Use Only - 84 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 85 Camera socket pin ? Does Camera work Replace U102 or Change the board properly ? Camera working well ! LGE Internal Use Only - 85 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 86: Speaker / Receiver Trouble
TP01 : C212 . .. TP05 : FB208 TP02 : C213 TP04 : C248 TP03 :C U102 BB chip LGE Internal Use Only - 86 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 87 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 LGE Internal Use Only - 87 - Copyright © 011 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 FB208,FB209 FB208,FB209 (TP05,06) (TP05,06) Speaker Speaker Working well!! Working well!! LGE Internal Use Only - 88 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 89: Earphone Trouble
FB211 C246 Connector TP04 : TP01 : FB204 C245 L204 L203 U102 BB chip Headset MIC Resoldering points LGE Internal Use Only - 89 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 90 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 LGE Internal Use Only - 90 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 91 From the From the Or change the and try again earphone? earphone? U202(amp), U102(BB IC) Earphone will work properly LGE Internal Use Only - 91 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 92: 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 LGE Internal Use Only - 9 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 93 Is it a few tens mV AC? Check the soldering of Re-solder component C147, C148 (TP06,05) Microphone will work properly. LGE Internal Use Only - 93 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 94: 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 LGE Internal Use Only - 94 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 95 Does it work Does it work Properly? Properly? SIM card is SIM card is properly working properly working. LGE Internal Use Only - 95 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 96: Micro Sd (Usd) Trouble
47ohms USD_D0 DAT0 USD_D1 DAT1 COVER_DETECT1 TP01 1V8_VDD TP01 C249 C250 TP0 TP02 R236 2.2uF 100Kohms C251 0.001uF LGE Internal Use Only - 96 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 97 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 - 97 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98: Bluetooth Trouble
Setup Test Equipment START Check point Clock Check point POWER Check point Module Figure 4-14. WI-FI/BT Module Component Change LGE Internal Use Only - 98 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 99 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 LGE Internal Use Only - 99 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 100 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 LGE Internal Use Only - 100 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 101: 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 LGE Internal Use Only - 101 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 102 470n Q401 FEED 470n ANT402 C486 C427 ZD401 C490 R425 DNI_DIODE_1006 C428 R408 470n 4.7K 470n 4.7K FM_ANT LGE Internal Use Only - 10 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 103 A condition is good? Replace U102 A condition is good? Check Bias Voltage Replace VDD_FMR(C124) U102 FM_radio will work properly LGE Internal Use Only - 103 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 104: Touch Trouble
TP07 : ZD308 TP08 : ZD309 TP06 : ZD307 CN304 TP05 :ZD306 TP04 : R124 TP03 : R123 U102 LGE Internal Use Only - 104 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 105 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 LGE Internal Use Only - 105 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 106 Contact well CN304 touch pannel and touch pannel contact Resolder CN304 or replace touch pannal Touch will work properly LGE Internal Use Only - 106 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 116 5. DOWNLOAD LG-T315i ‘LG-T315i’ LG-T315i LG-T315i LG-T315i LG-T315i LG-T315i ‘LG-T315i’ LG-T315i LGE Internal Use Only - 116 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 117 5. DOWNLOAD LG-T315i LG-T315i LG-T315i LG-T315i LG-T315i LG-T315i LGE Internal Use Only - 117 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 120: Block Diagram
6. BLOCK DIAGRAM 6.Block diagram 6. Blck Diagram 6.Block Diagram Touch LGE Internal Use Only - 10 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 121: Circuit Diagram
X101 OUT2 LCD_RESET IO_EXPANDER1 EN_SET NX3215SA 32.768KHz VIB_EN OUT3 C108 C121 OJ101 OJ102 FM_LNA_EN OUT4 C145 OUT5 CAM_RESET LGE Internal Use Only - 121 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 122 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 - 122 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 123 TP310 VIB_PWM KEY_ROW3 PWM/CLK VB301 R326 VIB_EN D304 D305 D306 PGND D303 R315 C337 C321 GAIN 0.1u C338 LGE Internal Use Only - 123 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 124 TCXO LDO VDD_TCXO VBAT VDD_TCXO X401 U402 FM_ANT XTALP VOUT CLK_REQ 26MHz C419 TG-5010LH-87N R404 C418 C417 100K LGE Internal Use Only - 124 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 125: Bga Pin Map
8. BGA PIN MAP BGA IC pin check (U102) Ball Diagram (Top View), PMB8810(A-GOLDRADIO+) : not in use LGE Internal Use Only - 15 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 126 8. BGA PIN MAP BGA IC pin check (U101) Ball Diagram (Top View), PF38F5060M0Y3DF : not in use LGE Internal Use Only - 16 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 127: Pcb Layout
C240 CON304 : Touch screen connector VA203 CN304 ZD307 ZD306 - no touch screen KB301 KB302 KB303 LG-T315i-MAIN-SPFY0230301-1.0-TOP LGE Internal Use Only - 127 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 128 - no Power On - no Service MIC201 : MAIN MIC - no voice sending - no voice recording LG-T315i-MAIN-SPFY0230301-1.0-BOT LGE Internal Use Only - 128 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 129: 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 - 19 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 130: Stand Alone Test
11.2 Setting Method 1. Set COM Port 2. Check PC Bau Rate 3. Confirm EEPROM & Delta file prefix name LGE Internal Use Only - 130 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 131 11. STAND ALONE TEST 10. STAND ALONE TEST Not Connected Connected 4. Click “Update Info” for communicating Phone and Test-Program LGE Internal Use Only - 131 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 132 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. LGE Internal Use Only - 13 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 133: 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 - 133 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 134: 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. LGE Internal Use Only - 134 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 135: Auto Calibration
LG-T315i LG-T310i Spec_LGT310i_001 LG-T315i Setup_Cal_Parameter_001 script_001 PwrSupply_Cmd Procedure_LGT310i_001 LG-T315i Ezlooks AutoSetup_LGT310i_001 LG-T315i xmm2130_eep008.cfg LG_RfTest_E5515C_122.dll LG_RfCal_InfiKE000Ag_177.dll dwdio.dll LG_UI_Ad6500_004.dll Multi_HK LGE Internal Use Only - 135 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 136: 1.3 Description Of Basic File
Setup Module. & -. Spec_GD350_001.xml : Definition Module of Auto Test Spec LG-T315i -. Setup_Cal_Parameter_001.xml : Calibration Definition Module. LGE Internal Use Only - 136 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 137: 1.4 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 LGE Internal Use Only - 137 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 138 10. Select “ LOGIC MODE” that you want Logic mode: 1-> Calibration only 2-> Auto test only 3-> Cal & Auto LGE Internal Use Only - 138 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 139 11. AUTO CALIBRATION 11. Select the model name “T315i” LG-T315i Model name Start button 12. Click “start” button LG-T315i LGE Internal Use Only - 139 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 140: 1.5 Agc
Channel PCS 1900 Frequency 1850.2 MHz 1880 MHz 1909.8 MHz Max power 30 dBm 30 dBm 30 dBm LGE Internal Use Only - 140 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 141: Exploded View & Replacement Part List
MCBA01 Can,Shield MCBA00 SUMY00 Microphone,Condenser SBPL00 GMEY00 Screw,Machine SUMY00 MCK00 Cover,Battery ADCA00 EBR00 SBPL00 Mobile Phone Battery Li-Ion LGE Internal Use Only - 141 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 142: Replacement Parts
COMPLEX LG-T310 VIVBK ZZ:Without Color COMPLEX, MPBZ00 Damper MPBZ0324501 (empty), , , , , MTAB00 Tape, Protect MTAB0401302 COMPLEX LGT315.ACISWR ZZ:Without Color - LGE Internal Use Only - 14 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 143 MFEZ00 FRAME MFEZ0031101 LG-T310 VIVBK BK, ZZ, PRESS, STS, , , , , MPBG00 PAD, LCD MPBG0110101 LG-T310 VIVBK BK, ZZ, COMPLEX, (empty), , , , , COMPLEX LGT315I.ACISWR ZZ:Without Color MTAA00 Tape, Decor MJN67695901 TAPE_DECO_FRONT COMPLEX LGT315I.ACISWR ZZ:Without Color...
Page 144 Main, SMT Top SPFY0245001 LG-T310i TURWA A FR-4 Build-Up - 0.8mm SPFY00 PCB, Main SPFY0245001 MAIN LG Innotek.com LGE Internal Use Only - 144 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 145 MEZ002100 Label, Approval MEZ63927701 (Kazakhstan KST Mark) MCK00 Cover, Battery MCK66585801 MOLD PC LUPOY SC-1004A LGT315I.ACISBK BK:Black - LGE Internal Use Only - 145 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 146: Main Component
Capacitor, MCH155CN152KK 1.5nF 10% 50V X7R -55TO+125C 1005 C231 ECCH0000145 Ceramic, Chip R/TP - ROHM Semiconductor KOREA CORPORATION LGE Internal Use Only - 146 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 147 GRM188R60J106M 10000000 pF, 6.3V, M, X5R, TC, 1608, C253 ECCH0005604 Ceramic, Chip R/TP, 0.8 mm MURATA MANUFACTURING CO., LTD. LGE Internal Use Only - 147 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 148 Capacitor, C1005Y5V1A474ZT000F 470nF -20TO+80% 10V Y5V - C123 ECZH0001210 Ceramic, Chip 30TO+85C 1005 R/TP - TDK KOREA COOPERATION LGE Internal Use Only - 148 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 149 Capacitor, GRM188R71E104K 100nF 10% 25V X7R -55TO+125C C228 ECZH0003504 Ceramic, Chip 1608 R/TP - MURATA MANUFACTURING CO., LTD. LGE Internal Use Only - 149 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 150 LQG15HSR10J02D 100NH 5% - 150mA 1.25OHM Inductor, L205 ELCH0003842 600MHZ 8 SHIELD NONE 1.0X0.5X0.5MM R/TP Multilayer, Chip MURATA MANUFACTURING CO., LTD. LGE Internal Use Only - 150 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 151 KTC4075E NPN 5V 60V 50V 150mA 100NA 700 100mW Q101 TR, Bipolar EQBN0020501 ESM R/TP 3P KEC CORPORAITION LGE Internal Use Only - 151 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 152 MCR01MZP5J102 1KOHM 5% 1/16W 1005 R/TP - Resistor, Chip ERHZ0000404 R413 ROHM. MCR01MZP5J103 10KOHM 5% 1/16W 1005 R/TP - R135 Resistor, Chip ERHZ0000405 ROHM. LGE Internal Use Only - 15 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 153 MCR01MZP5J470 47OHM 5% 1/16W 1005 R/TP - ROHM. MCR01MZP5J471 470OHM 5% 1/16W 1005 R/TP - R114 Resistor, Chip ERHZ0000484 ROHM. LGE Internal Use Only - 153 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 154 TECHNOLOGY CORP. IC, Resistive U301 Touch Screen EUSY0416201 ISA2000 NONE NONE UQFN R/TP 18P - Imagis Co., Ltd. Controller LGE Internal Use Only - 154 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 155 BLM15BB750SN1D 75 ohm 1.0X0.5X0.5 25% 0.4 ohm FB101 Filter, Bead SFBH0007103 0.3A SMD R/TP 2P 0 MURATA MANUFACTURING CO., LTD. LGE Internal Use Only - 155 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 156 ZD307, ESD9X5.0ST5G 5V 6.2 12.3V 8.7A 107W SOD528 R/TP Diode, TVS EDTY0009101 ZD308, 2P 1 ON SEMICONDUCTOR ZD309 LGE Internal Use Only - 156 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 157 LMV331 2.7~5.5V - COMPARATOR SC70 R/TP 5P - U204 IC, Comparator EUSY0407701 TEXAS INSTRUMENTS KOREA LTD, HONGKONG BRANCH. LGE Internal Use Only - 157 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 158 BLM15BD182SN1D 1800 ohm 1.0X0.5X0.5 25% 1.4 ohm FB205, Filter, Bead SFBH0008105 0.1A SMD R/TP 2P 0 MURATA MANUFACTURING CO., FB211 LTD. LGE Internal Use Only - 158 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 159: Accessory
LGIP-430N-WW-TO LGIP-430N-WW-SANYO, 3.7 V, 900 Mobile Phone SBPL00 SBPL0098201 mAh, 1 CELL, PRISMATIC , 463450, INNERPACK, WW Battery Li-Ion TOCAD DONGHWA LGE Internal Use Only - 159 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...

LG -T315i 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

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