Page 1 Internal Use Only Service Manual LG-A230 Date: May, 2011 / Issue 1.0...
Page 2: Table Of Contents
4.13 Micro SD (uSD) Trouble ..............99 4.14 Bluetooth Trouble ................10 4.15 FM Radio Trouble ................105 4.16 Wireless FM Radio Trouble ............107 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
MIDI SW MIDI (Mono SPK) Camera 1.3M FF Bluetooth / FM Radio Bluetooth version 2.1 / 76~108MHz supported LGE Internal Use Only - 7 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 8: Technical Specification
Power Toler. 30dBm 14dBm 28dBm 12dBm 26dBm 10dBm 24dBm 8dBm 22dBm 6dBm 20dBm 4dBm 18dBm 2dBm 16dBm 0dBm LGE Internal Use Only - 8 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 9 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 - 9 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 10 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 - 10 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 11 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 - 11 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 12 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 - 1 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 13: Technical Brief
3. TECHNICAL BRIEF 3. TECHNICAL BRIEF TECHNICAL BRIEF 3.1 Digital Main Processor Figure. 3.1.1 X-Gold 215 Hardware Block Diagram LGE Internal Use Only - 13 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 14 – GEA-1/2/3 • Security: – OMTP TR0 – Secure Boot – RSA(ROM)/SHA-1(HW accel.) – OCDS disabling – Certificate Management LGE Internal Use Only - 14 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 15: 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 - 15 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 16: Power Management
• USB battery charging – USB charging spec 1.0 compliant • Backlight – Up to 4 serial white LEDs (integrated LDO) LGE Internal Use Only - 16 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 17 – 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 - 17 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 18: Power Management
1.8 V memory is used. The efficiency of the DC/DC converter is optimized for an average load current of 100 mA. That is the load current estimated for the GSM talk mode. LGE Internal Use Only - 18 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 19 • The mixed signal module has some LDO’s for the audio driver and microphone supply • The FM receiver has an internal LDO for sensitive RF circuits. LGE Internal Use Only - 19 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 21 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 - 1 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 22 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 - - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 23 3. TECHNICAL BRIEF Figure 3.2.2 Second (Main) Part of the Startup State Machine in the VPMU Domain LGE Internal Use Only - 3 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 24 This is important, especially in half/full-wave charging where the charger detection is switching between charger detected/not detected according the AC supply frequency. reasons LGE Internal Use Only - 4 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 25 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 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
A BiFET block provides the internal PAC function and interface circuitry. The front-end, with switches and diplexer, provides a single antenna port and low insertion loss receive paths for two Rx ports. LGE Internal Use Only - 31 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32 10 uF,10V ,Z ,Y5V ,HD ,2012 ,R/TP IN CASE OF GSM850/PCS1900 CHANGE THIS MODULE 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)
The 26 MHz reference clock can also be applied to external components like Bluetooth or GPS, via the two buffered output signals FSYS1 and FSYS2. LGE Internal Use Only - 33 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34 (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 (U101)
The system can be configured to support one low band, GSM850 or EGSM900, and one high band, DCS1800 or PCS1900. A block diagram of the RF subsystem is given in Figure 3-5-1. 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(H8Bcs0Qg0Mmr, U100)
The modify operations can be locked using the WP input. LGE Internal Use Only - 40 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 41 Data read out after copy back read is allowed This device includes also extra features like OTP/Unique ID area, Read ID2 extension. LGE Internal Use Only - 41 - Copyright © 2011 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_RST2 SIM_CLK This signal is transferred to SIM card. SIM_DATA1 This signal is interface datum. SIM_DATA2 LGE Internal Use Only - 44 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 45: Lcd Interface
MP3 and PMP where long battery life is a major concern. LGE Internal Use Only - 45 - Copyright © 011 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 RT8966AGQW is available in a WQFN-24L 3x3 package. LGE Internal Use Only - 46 - Copyright © 011 LG Electronics. Inc. All right reserved. 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. LGE Internal Use Only - 47 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 48: Battery Charger Interface
The RT8966 is capable of being powered up from AC adapter and USB (Universal Serial Bus) port inputs. Moreover, the RT8966 includes a linear regulator (LDO 4.9V, 50mA) for supplying low power external circuitry. LGE Internal Use Only - 48 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 49: 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 - 49 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50 100% by Firmware. • The high-pass functions of the voiceband filters have to be implemented in firmware on TEAKLite®. LGE Internal Use Only - 50 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 51 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 - 51 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 52 The buffers are designed to be short circuit protected. Figure 3.12.3 Switching for R/L DACs onto Buffers LGE Internal Use Only - 5 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 53 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 - 53 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 54 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 - 54 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 55: Camera Interface(1.3M 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 3.12.1 LGE Internal Use Only - 55 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 56 • Color processing (contrast, saturation, brightness, hue) • Power management by software controlled clock disabling of currently not needed sub-modules LGE Internal Use Only - 56 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 57: Trouble Shooting
U100 Memory (1G/512DDR) U101 Main Chip (IFX_XMM215x_NAND) U500 RF Module (SKY77550) X100 Crystal, 26MHz Clock SW500 RF Switch LGE Internal Use Only - 57 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 58: Rx Trouble
Crystal Circuit (2) Check Mobile SW & RF module (3) Check PLL Control Re-download SW or Do calibration again LGE Internal Use Only - 58 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 59 Figure 4.2.1 CHECKING FLOW Replace X100 26 MHz O.K? Crystal is OK. See next page to check PLL Circuit LGE Internal Use Only - 59 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 60 USIF1_RTS_N BT_UART_RX USIF1_CTS_N BT_UART_TX DPLUS USB_DP DMINUS EXXY0027001 USB_DM Connect GND plane directly Figure 4.2.2 WAVEFORM Figure 4.2.3 LGE Internal Use Only - 60 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 61 4. TROUBLE SHOOTING (2) Checking Mobile SW &FEM TEST POINT 2G-BS VLOGIC Figure 4.2.4 LGE Internal Use Only - 61 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 62 10 uF,10V ,Z ,Y5V ,HD ,2012 ,R/TP IN CASE OF GSM850/PCS1900 CHANGE THIS MODULE CONTROL LOGIC EGSM Rx TP2 (VLOGIC) TP4 (Tx_EN) TP1 (BS_BS) LGE Internal Use Only - 6 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 63 TP2(High Band), TP3(Low Band) Replace TX Module (U500) Signal is OK ? Mobile SW & TX Module is OK. LGE Internal Use Only - 63 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 64: Tx Trouble
Crystal Circuit (2) Check Mobile SW &TX Module (3) Check PLL Control Redownload 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 Figure 4.3.1 CHECKING FLOW Replace X100 26 MHz O.K? Crystal is OK. See next page to check PLL Circuit LGE Internal Use Only - 65 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 66 USIF1_RTS_N BT_UART_RX USIF1_CTS_N BT_UART_TX DPLUS USB_DP DMINUS EXXY0027001 USB_DM Connect GND plane directly Figure 4.3.2 WAVEFORM Figure 4.3.3 LGE Internal Use Only - 66 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 67 (2) Checking Mobile SW & TX Module TEST POINT RF_BS VLOGIC U500 TX Ramp TX EN Figure 4.3.4 LGE Internal Use Only - 67 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68 10 uF,10V ,Z ,Y5V ,HD ,2012 ,R/TP IN CASE OF GSM850/PCS1900 CHANGE THIS MODULE CONTROL LOGIC Low Band(850/900)Tx TP2 (VLOGIC) TP3(Tx_EN) TP1 (RF_BS) LGE Internal Use Only - 68 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 69 (U500) TP5 signal same as Replace SW500 TP1? Mobile SW & TX Module is OK. Low Band(850/900) Tx LGE Internal Use Only - 69 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 70: Power On Trouble
4.4 Power On Trouble TEST POINT VDDRF2 VDDTDC VDDXO VBAT_RF2 VDDTRX VDDMS U101 VPMU VCORE VAUX Figure 4.1 LGE Internal Use Only - 70 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 71 2.2u 0.1u 470n 470n 0.1u 220n 0.1u 2.2u (10V) (10V) NEAR DBB Figure 4.5.4 power block of LG-A230 LGE Internal Use Only - 71 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 72 Is the phone power on? 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
4. TROUBLE SHOOTING 4.5 Charging Trouble TEST POINT CN201 & #1 U200 & #23 pin ,TP1 Figure 4.5 LGE Internal Use Only - 73 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 74 RT9866A USB_DM MUIC_ACC_ID R208 2.2K EAN62112401 USB_DP UART_RX UART_TX AUD1 AUD2 VDD_IO_1V8 C223 R213 I2C_SDA UART I2C_SCL ABB_INT_N LGE Internal Use Only - 74 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 75 Change the TA TP01 (Charging IC(U200))=5.1V ? Replace the main board Battery is charged? Charging is properly operating LGE Internal Use Only - 75 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 76: Vibrator Trouble
4. TROUBLE SHOOTING 4.6 Vibrator Trouble TEST POINT R248 Vibrator PAD / VB501 Figure 4.6 LGE Internal Use Only - 76 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 77 4. TROUBLE SHOOTING CIRCUIT MAIC IC VB200 R248 R238 VIB_P C239 C240 WHVM-1030B10 LGE Internal Use Only - 77 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 78 Resolder the R238 Is the voltage at VB200 & R248 (+) high? Replace vibrator Vibrator Working well ! LGE Internal Use Only - 78 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 79: Lcd Trouble
TP1: FL303 : LCD Control Signal FL304 : LCD DATA 0~3 FL305 : LCD DATA 4~7 Figure 4.7 LGE Internal Use Only - 79 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 80 LCD_F_DATA[5] LCD_F_DATA[6] LCD_F_DATA[7] LCD_F_CS_N LCD_F_WR_N LCD_F_RST_N LCD_LED_CA1 LCD_F_RS LCD_LED_CA2 RDX / READ VA301 C322 C323 C321 LM177BN1A EAJ61757101 LGE Internal Use Only - 80 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 81 4. TROUBLE SHOOTING Waveform VAUX_2V85 VAUX_2V85 VDD_1V8 RESET Graph 4.7.2. LCD Data Waveform LGE Internal Use Only - 81 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 82 EMI filter ? (FL303,FL304,FL305) (FL303,FL304, FL305) Does LCD work Replace LCD module properly ? LCD working well ! LGE Internal Use Only - 8 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 83: Camera Trouble
4. TROUBLE SHOOTING 4.8 Camera Trouble TEST POINT CN300 CAM_CTL_Signal CAM_DATA 4~7 CAM_DATA 0~3 CAMERA Module Figure 4.8 LGE Internal Use Only - 83 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 84 RT9866A USB_DM MUIC_ACC_ID R208 2.2K EAN62112401 USB_DP UART_RX UART_TX AUD1 AUD2 VDD_IO_1V8 C223 R213 I2C_SDA UART I2C_SCL ABB_INT_N LGE Internal Use Only - 84 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 85 HSYNC falling time = 4.07ns HSYNC rising time = 5.02ns PCLK falling time = 4.1ns PCLK rising time = 5.9ns LGE Internal Use Only - 85 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 86 Camera socket pin ? Does Camera work Replace U101 or Change the board properly ? Camera working well ! LGE Internal Use Only - 86 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 87: Speaker / Receiver Trouble
4. TROUBLE SHOOTING 4.9 Speaker / Receiver Trouble TEST POINT IC200 CN200 Speaker Pad LGE Internal Use Only - 87 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 88 1800 2.2u I2C_SCL I2C_SDA C233 2.2u C234 0.1u R217 HS_GND R243 CN200 FB206 RCV_SPK_OUT_P FB207 RCV_SPK_OUT_N SUSY0028901 BRS-181213SL08-P LGE Internal Use Only - 88 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 89 Check the Audio signal Check the Audio signal Replace/Change the FB206,FB207 IC200 FB206,FB207 Speaker Speaker Working well!! Working well!! LGE Internal Use Only - 89 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 90: Earphone Trouble
4. TROUBLE SHOOTING 4.10 Earphone Trouble TEST POINT IC200 Ear-Mic Connector TP01 :C215 TP02 :C213 Headset MIC Resoldering points LGE Internal Use Only - 90 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 91: Headset Mic
FB205 1800 R216 C235 HS_MIC_P VA202 C228 C229 VDD_IO_1V8 U202 R222 VIN- HS_HOOK_DET VIN+ NCS2200SQ2T2G EUSY0250501 R237 100K LGE Internal Use Only - 91 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 92 Or change the and try again the earphone? the earphone? IC200(amp),U101(BB IC) Earphone will work properly LGE Internal Use Only - 9 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 93: Microphone Trouble
4.11 Microphone Trouble TEST POINT TP1 (C140) TP4 (C143) TP3(C142) TP2 (R529) TP05 (VA203) TP6 ( VA204) MIC200 Figure 4.12 LGE Internal Use Only - 93 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 94 0.033uF OBM-410L44-RC1882 C242 39pF MIC200 C243 R231 MIC guide line check MAIN_MIC_N 0.033uF VA203 VA204 C246 MAIN GND LGE Internal Use Only - 94 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 95 Is it a few tens mV AC? Check the soldering of Re-solder component VA203,VA204 (TP06,05) Microphone will work properly. LGE Internal Use Only - 95 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 96: Sim Card Interface Trouble
4.12 SIM Card Interface Trouble TEST POINT TP3 : R315 TP2 : R314 TP1 : RST PIN #1 J301 J300 Figure 4.13 LGE Internal Use Only - 96 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 97 DIGUP2 BT_PCM_SYNC 0.1u VSIM_2V85 U300 SIM_DATA_2 SIM_DATA COM2 SIM_SELECT SIM_RST2 COM1 SIM_RST_SELECT SIM_DATA_1 R315 100K C320 R314 100K LGE Internal Use Only - 97 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98 Does it work Does it work Properly? Properly? SIM card is properly working SIM card is properly working. LGE Internal Use Only - 98 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 99: Micro Sd (Usd) Trouble
TP3 : MzSD_CLK R321 : MSD_CMD R313 : MSD_D[2] R314 : MSD_D[3] TP2 : R318 TP1 : C332 Figure 4.14 LGE Internal Use Only - 99 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 100 MSD_D[2] DETECT_A MSD_DET_N DETECT_B R318 DUMMY3 ZD302 ZD303 ZD304 ZD305 ZD306 ZD307 100K C337 ENSY0023501 C328 2.2u EDTY0010101 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
4. TROUBLE SHOOTING 4.14 Bluetooth Trouble TEST POINT Figure 4.16.1 LGE Internal Use Only - 10 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 103 XOUT UART_RXD BT_UART_TX UART_RTS_N BT_UART_CTS BT_WAKEUP GPIO_0 UART_CTS_N BT_UART_RTS GPIO_6 TP400 GPIO_1 HUSB_DN BT_DBB_INT TP401 GPIO_5 HUSB_DP BT_CLK_REQ LGE Internal Use Only - 103 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 104 Replace 1V8_VDD at C405(TP3) U101 CLK32K Replace C410(TP5) U101 Replace Check BT_CLK U101 C411(TP6) BT will work properly LGE Internal Use Only - 104 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 105: Fm Radio Trouble
4. TROUBLE SHOOTING 4.15 FM Radio Trouble TEST POINT C208 C264 L200 ZD200 C204 J200 Figure 4.17 LGE Internal Use Only - 105 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 106 U202 R222 VIN- HS_HOOK_DET VIN+ NCS2200SQ2T2G EUSY0250501 R237 100K N14 M0 BAT_TEMP C128 4.7n VDD_FMR FMRIN FM_ANT FMRINX LGE Internal Use Only - 106 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 107: Wireless Fm Radio Trouble
4. TROUBLE SHOOTING 4.16 Wireless FM Radio Trouble TEST POINT TP02 TP01 ANT401 Figure 4.17 LGE Internal Use Only - 107 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 108: Lge Internal Use Only
R411 C420 R412 470n 4.7K 470n 4.7K 300ohm 300ohm N14 M0 BAT_TEMP C128 4.7n VDD_FMR FMRIN FM_ANT FMRINX LGE Internal Use Only - 108 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 109: Lge Internal Use Only
A condition is good? Replace U101 A condition is good? Replace Check FM condition U101 FM_radio 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-A30 ‘LG-A30’ LG-A30 LG-A30 LG-A30 LG-A30 LG-A30 ‘LG-A30’ LG-A30 LGE Internal Use Only - 119 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 124: Circuit Diagram
ON BOARD ARM9 JTAG & ETM INTERFACE UART_RX TP112 EXXY0018701 UART_TX ON BOARD UART/USB INTERFACE URXD UTXD R118 TP114 PWRON 100K OJ101 OJ102 OJ103 LGE Internal Use Only - 124 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 125 ICVL0518050FR EAG62832501 4.7u 4.7p 3.9p MUIC_IO_P KQ03LV2-3P-3R SEVY0005101 MUIC_ACC_ID C260 Close to SPK 22pF sc_GD350 MCBA0059201 GU073-5P-SD-E1500 ENRY0008801 LGE Internal Use Only - 125 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 126 ZD305 ZD306 100K WHITE LED C337 ENSY0023501 C328 2.2u EDTY0010101 R333 Q300 KEY_BL_EN C331 LSCR523EBFS8 R334 EBK61572201 100K LGE Internal Use Only - 126 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 127 L406 270n Q400 C416 Q401 470n C418 ZD400 C419 R411 C420 R412 4.7K 470n 470n 4.7K 300ohm 300ohm LGE Internal Use Only - 127 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 128 C518 C519 C520 6.8p 10 uF,10V ,Z ,Y5V ,HD ,2012 ,R/TP IN CASE OF GSM850/PCS1900 CHANGE THIS MODULE LGE Internal Use Only - 128 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 129: Bga Pin Map
8. BGA PIN MAP BGA IC pin check (U101) Ball Diagram (Top View), PMB8815 : not in use LGE Internal Use Only - 129 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 130 8. BGA PIN MAP BGA IC pin check (U301) Ball Diagram (Top View), H8BCS0QG0MMR LGE Internal Use Only - 130 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 131: Pcb Layout
KB308 KB309 KB318 KB301 LD302 LD303 R326 R327 KB306 KB311 LD304 R328 LD305 C327 R329 C326 KB316 LG-A230_MAIN_EAX64026401_1.1_TOP LGE Internal Use Only - 131 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 132 - no Servive - no FM radio MIC200 : MAIN MIC - no voice sending - no voice recording LG-A230_MAIN_EAX64026401_1.1_BOT LGE Internal Use Only - 132 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 133: Engineering Mode
[2-5-7] MMS Test [2-5-8] Auto Call Test [2-5-9] Aging Test [2-5-10] SIM Info RPC Status ICCID STatus [2-5] Debug Setting LGE Internal Use Only - 133 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 134: Stand Alone Test
11.2 Setting Method 1. Set COM Port 2. Check PC Baud Rate 3. Confirm EEPROM & Delta file prefix name LGE Internal Use Only - 134 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 135 11. STAND ALONE TEST Not Connected Connected 4. Click “Update Info” for communicating Phone and Test-Program LGE Internal Use Only - 135 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 136 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 - 136 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 137: Tx Test
11. STAND ALONE TEST 11.3 Tx Test 1. “Non signaling mode” bar and then confirm “OK” text in the command line. LGE Internal Use Only - 137 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 138 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 - 138 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 139: Rx Test
2. Select “Rx” in the RF mode menu. 3. Finally, Click “Write All” bar and try the efficiency test of Phone. LGE Internal Use Only - 139 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 140 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 - 140 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 141: Auto Calibration
GSM phone. 12.2 Directory structure of Tachyon 12.2 Directory structure of Tachyon “C LGE Tachyon” LGE Internal Use Only - 141 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 142: 1.3 Description Of Folder & File
-. Model_CallSetuo.xml : stored equipment setting data for auto test. -. Model_NV.ini : default NV data. -. Model_Sequence.xml : stored calibration and auto test procedure. LGE Internal Use Only - 14 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 143: 1.4 Procedure
12. AUTO CALIBRATION 12.4 Procedure 1. Execute “/LGE/Tachyon/Tachyon.Exe” and Click Login button. 2. Tachyon execute ready display LGE Internal Use Only - 143 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 144: 1.5 Tachyon Main Ui
11. Voltage / Current Setting 12. Show Result 12.5.2 Command button Only support Calibration Test and Stop button. LGE Internal Use Only - 144 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 145: 1.6 Agc
Channel PCS 1900 Frequency 1850.2 MHz 1880 MHz 1909.8 MHz Max power 29.5 dBm 29.5 dBm 29.5 dBm LGE Internal Use Only - 145 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 146: Exploded View & Replacement Part List
Speaker,Dual Mode ADB00 EAJ00 LCD,Module-TFT EBP00 Camera Module ABM00 AEX00 Keypad Assembly,Main MCK00 Cover,Battery SUMY00 EAC00 Rechargeable Battery,Lithium Ion LGE Internal Use Only - 146 - Copyright © 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 147: Replacement Parts
COMPLEX C2000 CGRSV WA:White C2000 USASV MEZ000900 MLAB0001102 After Service DIA 4.0 PRINTING, MCK063301 Cover, Rear MCK66669301 MOLD PC LEXAN141R LGA230.AINDZY BK:Black - LGE Internal Use Only - 147 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 148 4x1.0t FPCB GoerTek Inc. WHVM-1030B15 WHVM-1030B15, 3 V, 80 mA, 10*3.0, SJMY00 Motor, DC SJMY0007109 17mm WOOSUNG G&T CO., LTD LGE Internal Use Only - 148 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 149 Bag, Vinyl MBAD0005204 COMPLEX LG-LX260 SPRAG ZZ:Without Color - MBEE00 Box, Master MBEE0059801 COMPLEX KS360 ACNRD ZZ:Without Color - LGE Internal Use Only - 149 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 150 AAD000000 Addition Assembly AAD85818901 LGA230.AINDKG KG:BLACK GRAY - MCK00 Cover, Battery MCK66669401 MOLD PC LEXAN141R LGA230.AINDZY BK:Black - LGE Internal Use Only - 150 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 151: Main Component
Ceramic, Chip 1005 R/TP - MURATA MANUFACTURING CO., LTD. C317, C318, C319, C320, C322, C323, C331, C412, C413 LGE Internal Use Only - 151 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 152 C1005C0G1H6R8CT000F 6.8pF 0.5PF 50V NP0 - Capacitor, C518 ECCH0001001 55TO+125C 1005 R/TP - TDK KOREA Ceramic, Chip COOPERATION LGE Internal Use Only - 15 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 153 H8BCS0QG0MMR-46M NAND/1G SDRAM/512M U100 IC, MCP, NAND EUSY0425901 0VTO0V 8.0x9.0x1.0 TR 130P NAND+DRAM BGA - HYNIX SEMICONDUCTOR INC. LGE Internal Use Only - 153 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 154 ESD9B5.0ST5G ESD9B5.0ST5G, SOD-923, 5 V, 300 ZD304, Diode, TVS EDTY0010101 mW, R/TP, 15pF SCG HONG KONG SAR LTD. ZD305, ZD306, ZD307, ZD400 LGE Internal Use Only - 154 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 155 Multilayer, Chip CO., LTD 2SJ347 P-CHANNEL MOSFET -20V -7 -0.05A 40OHM Q200 EQFP0000101 100mW SSM R/TP 3P TOSHIBA LGE Internal Use Only - 155 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 156 C113, Capacitor, C1005X7R1A473KT000F 47000pF 10% 10V Y5P - ECCH0002002 C114 Ceramic, Chip 30TO+85C 1005 R/TP - TDK CORPORATION LGE Internal Use Only - 156 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 157 1005GC2T1N5SLF 1.5NH 0.3NH - 300mA 0.13OHM Inductor, L508 ELCH0004707 7GHZ 8 SHIELD NONE 1.0X0.5X0.5MM R/TP PILKOR Multilayer, Chip ELECTRONICS LTD. LGE Internal Use Only - 157 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 158 1005 R/TP - ROHM Semiconductor KOREA C243 Ceramic, Chip CORPORATION DSX321G-26M(8PF) 26MHZ 10PPM 0F NONE SMD X100 Crystal EXXY0027001 R/TP DAISHINKU CORPORATION. LGE Internal Use Only - 158 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 159 55TO+125C 1005 R/TP - TDK KOREA Ceramic, Chip COOPERATION R401, MCR01MZP5J5R1 5.1OHM 5% 1/16W 1005 R/TP - Resistor, Chip ERHZ0003801 R402 ROHM. LGE Internal Use Only - 159 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 160 15GHZ 8 SHIELD NONE 1.0X0.5X0.5MM R/TP Multilayer, Chip TOKO, INC. MCR01MZP5F1502 15KOHM 1% 1/16W 1005 R/TP - R400 Resistor, Chip ERHY0000128 ROHM. LGE Internal Use Only - 160 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 161 Capacitor, GRM155R71C223K 22nF 10% 16V X7R -55TO+85C ECCH0000179 C235 Ceramic, Chip 1005 R/TP - MURATA MANUFACTURING CO., LTD. LGE Internal Use Only - 161 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 162 ERHZ0000529 ROHM. R114, R115, MCR01MZP5J222 2.2KOHM 5% 1/16W 1005 R/TP - R208, Resistor, Chip ERHZ0000443 ROHM. R229, R232 LGE Internal Use Only - 16 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 163: Accessory
LGIP-531A-LI-EU PRISMATIC 3.7V 950AH 950mAH EAC00 Battery, EAC61578801 5.5X34X50 5.7*34.15*53.55 BLACK INNERPACK - Lithium Ion Tianjin Lishen Battery Joint-Stock Co., Ltd LGE Internal Use Only - 163 - Copyright © 011 LG Electronics. Inc. All right reserved. Only for training and service purposes...

LG -A230 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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