LG MG295 Service Manual Download Page 40

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LGE Internal Use Only

4. TROUBLE SHOOTING

- 41 -

(1) Checking Crystal Circuit

X501

R508

GND

VCC

U501

MC74VHC1G04DFT2G

R508

2V75_VVCXO

R509

2.2u

C515

1000p

C511

26M_BT

26M_DBB

TEST POINT

26 MHzO.K?

Crystal Circuit is OK
See next Page to check
Mobile SW

See next Page to check
Mobile SW

Yes

Change X501

CHECKING FLOW

CIRCUIT

WAVEFORM

Graph 4.2.1(a)

Graph 4.2.1(b)

Summary of Contents for MG295

Page 1: ...Service Manual Model MG295 MG296 KG296 Service Manual MG295 MG296 KG296 Date October 2007 Issue 1 0 Internal Use Only ...

Page 2: ... Trouble 63 4 10 SIM Card Interface Trouble 65 4 11 Earphone Trouble 67 4 12 KEY backlight Trouble 69 4 13 Receiver Trouble 71 4 14 Microphone Trouble 73 4 15 RTC Trouble 75 4 16 Folder on off Trouble 77 4 17 Micro SD Trouble 79 4 18 Bluetooth FM Radio Trouble 81 5 DOWNLOAD 84 5 1 Download 84 6 CIRCUIT DIAGRAM 91 7 BGA IC Pin Check 101 8 PCB LAYOUT 105 9 BLOCK DIAGRAM 109 10 ENGINEERING MODE 110 1...

Page 4: ...nauthorized use B Incidence of Harm If a telephone company determines that the equipment provided to customer is faulty and possibly causing harm or interruption in service to the telephone network it should disconnect telephone service until repair can be done A telephone company may temporarily disconnect service as long as repair is not done C Changes in Service A local telephone company may ma...

Page 5: ...d engines or electric motors may cause problems H Electrostatic Sensitive Devices ATTENTION Boards which contain Electrostatic Sensitive Device ESD are indicated by the sign Following information is ESD handling Service personnel should ground themselves by using a wrist strap when exchange system boards When repairs are made to a system board they should spread the floor with anti static mat whic...

Page 6: ...al to Analog Converter DCS Digital Communication System dBm dB relative to 1 milli watt DSP Digital Signal Processing EEPROM Electrical Erasable Programmable Read Only Memory ESD Electrostatic Discharge FPCB Flexible Printed Circuit Board GMSK Gaussian Minimum Shift Keying GPIB General Purpose Interface Bus GSM Global System for Mobile Communications IPUI International Portable User Identity IF In...

Page 7: ... RLR Receiving Loudness Rating RMS Root Mean Square RTC Real Time Clock SAW Surface Acoustic Wave SIM Subscriber Identity Module SLR Sending Loudness Rating SRAM Static Random Access Memory PSRAM Pseudo SRAM STMR Side Tone Masking Rating TA Travel Adapter TDD Time Division Duplex TDMA Time Division Multiple Access UART Universal Asynchronous Receiver Transmitter VCO Voltage Controlled Oscillator V...

Page 8: ...vel 5 DCS PCS 29 5dBm Level 0 GPRS compatibility Class 10 SIM card type 3V 1 8V Small Display MAIN TFT 128 x 160 pixel 262K Color SUB CSTN 96 64 pixel 65K Color Hard icons Key Pad 0 9 Up Down Left Right Ok Navigation Key Status Indicator Menu Key Clear Key Back Key Confirm Key Send Key Volume Key PWR Key Camera Key Hot Key ANT Internal EAR Phone Jack Yes Stereo PC Synchronization Yes Speech coding...

Page 9: ...85 2 Phase Error RMS 5 degrees Peak 20 degrees 3 Frequency Error 0 1 ppm GSM Level Power Toler Level Power Toler 5 33 dBm 2dB 13 17 dBm 3dB 6 31 dBm 3dB 14 15 dBm 3dB 7 29 dBm 3dB 15 13 dBm 3dB 8 27 dBm 3dB 16 11 dBm 5dB 9 25 dBm 3dB 17 9 dBm 5dB 10 23 dBm 3dB 18 7 dBm 5dB 11 21 dBm 3dB 19 5 dBm 5dB 4 Power Level 12 19 dBm 3dB DCS PCS Level Power Toler Level Power Toler 0 30 dBm 2dB 8 14 dBm 3dB 1...

Page 10: ...ax dBc 100 0 5 200 30 250 33 400 60 600 1 200 60 1 200 1 800 60 1 800 3 000 63 3 000 6 000 65 5 Output RF Spectrum 6 000 71 due to modulation DCS PCS Offset from Carrier kHz Max dBc 100 0 5 200 30 250 33 400 60 600 1 200 60 1 200 1 800 60 1 800 3 000 65 3 000 6 000 65 6 000 73 GSM EGSM Offset from Carrier kHz Max dBm Output RF Spectrum 400 19 6 due to switching transient 600 21 1 200 21 1 800 24 ...

Page 11: ... Conduction Emission Status GSM EGSM 8 Bit Error Ratio BER Class II 2 439 102 dBm DCS PCS BER Class II 2 439 102 dBm 9 RX Level Report Accuracy 3 dB 10 SLR 8 3 dB Frequency Hz Max dB Min dB 100 12 200 0 300 0 12 11 Sending Response 1 000 0 6 2 000 4 6 3 000 4 6 3 400 4 9 4 000 0 12 RLR 2 3 dB Frequency Hz Max dB Min dB 100 12 200 0 300 2 7 500 5 13 Receiving Response 1 000 0 5 3 000 2 5 3 400 2 10...

Page 12: ...m frequency 2 5ppm 13 MHz tolerance 19 32 768KHz tolerance 30ppm At least 65 dBspl under below conditions 20 Ringer Volume 1 Ringer set as ringer 2 Test distance set as 50 cm 21 Charge Current Fast Charge 600 mA Slow Charge 120 mA Antenna Bar Number Power 5 85 dBm 4 90 dBm 86 dBm 22 Antenna Display 3 95 dBm 91 dBm 2 100 dBm 96 dBm 1 105 dBm 101 dBm 0 105 dBm Battery Bar Number Voltage 0 3 56V 0 05...

Page 13: ...y for training and service purposes Item Description Specification 25 Forced shut down Voltage 3 35 0 03V 1 Li ion Battery 26 Battery Type Standard Voltage 3 7 V Battery full charge voltage 4 2 V Capacity 830mAh Switching mode charger 27 Travel Charger Input 100 240 V 50 60 Hz Output 5 1 V 700 mA ...

Page 14: ...e passive components are mounted on a multi layer laminate substrate The assembly is encapsulated with plastic over mold RF input and output ports of the SKY77318 are internally matched to a 50 Ω load to reduce the number of external components for a quad band design Extremely low leakage current 2 5 µA typical of the dual PA module maximizes handset standby time The SKY77318 also contains band se...

Page 15: ... 1710 1910 MHz DCS1800 PCS1900 4 GND IN RF input 880 915 MHz GSM 5 GND RF and DC Ground 6 VCC1B RF and DC Ground 7 GND RF and DC Ground 8 GND RF and DC Ground 9 GND RF and DC Ground 10 GND RF and DC Ground 11 GSM OUT RF Output 880 915 MHz GSM 12 GND RF and DC Ground 13 GND RF and DC Ground 14 GND RF and DC Ground 15 DCS PCS_OUT RF Output 1710 1910 MHz DCS 1800 PCS1900 16 GND RF and DC Ground 17 VB...

Page 16: ...th features automatic calibration and tracking to remove DC offsets The transmitter features a translation loop architecture for directly modulating baseband signals onto the integrated TX VCO The translation loop modulator and TX VCO are extremely low noise removing the need for external SAW filters prior to the PA The AD6548 uses a single integrated LO VCO for both the receive and the transmit c...

Page 17: ...raining and service purposes Notes 1 Supply regulated by internal LDO3 and should not be connected to any other supply 2 Internally connected as Synth supply Counters SDM Charge pump 3 Supply regulated by internal LDO2 and should not be connected to any other supply COMPLIANT TO JEDEC STANDARDS MO 220 VHHD 2 ...

Page 18: ...1 FEM CIRCUIT DIAGRAM 2V75_VVCXO 0 1u C534 9 GND5 GND6 10 GND7 11 23 GND8 24 GND9 19 GSM_RX 13 PCS_RX PCS_RX 12 6 TX1G 8 TX2G 22 VCTRL1 VCTRL2 21 VCTRL3 20 VDD 3 ANT 1 15 DCS_RX DCS_RX 14 17 EGSM_RX EGSM_RX 16 GMS_RX 18 2 GND1 GND10 25 26 GND11 4 GND2 5 GND3 7 GND4 FL501 YGHF S006A Select Mode ANT_SW1 ANT_SW2 ANT_SW3 GSM Rx L H H EGSM Rx L H L DCS Rx L L H PCS Rx L L L GSM EGSM Tx H L L DCS PCS Tx...

Page 19: ...ementation requiring the crystal to be connected across 2 pins There is a programmable capacitor array included for coarse tuning of fixed offsets e g crystal manufacturing tolerance and an integrated varactor for dynamic control The oscillator is designed for use with a 26MHz crystal Dedicated control software ensures excellent frequency stability under all circumstances LGE Internal Use Only Cop...

Page 20: ... Parallel and Serial Display Interface USB 2 0 Full Speed device Interface Keypad Interface Flash Memory Interface Page Mode Flash Support 1 8V and 3 0V 64 kbps SIM Interface Universal System Connector Interface Data Services Interface Battery Interface e g Dallas 4 Other Supports 13 MHz and 26 MHz Input Clocks 1 8V Typical Core Operating Voltages 361 Ball Package 13x13mm 0 65mm Ball pitch 5 The A...

Page 21: ... 22 3 TECHNICAL BRIEF LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Figure 3 5 SYSTEM INTERCONECTION OF AD6721 EXTERNAL INTERFACE ...

Page 22: ...ronics Inc All right reserved Only for training and service purposes Signals Description L_MAIN_LCD_CS MAIN LCD driver chip enable MAIN LCD driver IC has own CS pin L_SUB_LCD_CS SUB LCD driver chip enable SUB LCD driver IC has own CS pin LCD_ID Select LCD module maker 2 8V SHARP 0V LGIT LCD_RESET This pin resets LCD module This signal comes from AD6721 directly LCD_WR Enable writing to LCD Driver ...

Page 23: ...d service purposes Signals Description MLED Current source for backlight LED LCD_DIM_CTRL Control LCD backlight level in 16 steps MLED 1 4 This pins are returned paths for backlight LED current source MLED Table 3 5 B2 DESCRIPTION OF LCD BACKLIGHT LED CONTROL Signals Description PA_BAND GPO 17 PAM Band Select ANT_SW1 GPO 9 Antenna switch Band Select ANT_SW2 GPO 10 Antenna switch Band Select PA_EN ...

Page 24: ...w Table 3 5 in detail LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Signals Description SIM_DATA This pin receives and sends data to SIM card This model can support 3 0 volt and 1 8 volt interface SIM card SIM_CLK Clock 3 25MHz frequency SIM_RST Reset SIM block GPIO_23 Table 3 5 D SIM CONTROL SIGNALS DESCRIPTION Figure 3 5 D2 SIM ...

Page 25: ...oltage interface 2 8V 200mA 2V85_VSIM supplies the SIM interface circuitry on the digital processor and SIM card 2 85V 1 8V 20mA 1V8_VRTC supplies the Real Time Clock module 1 8 V 20 µA 2V5_VMIC supplies the microphone interface circuitry 2 5 V 2 mA 2V75_VVCXO supplies the voltage controlled crystal oscillator 2 75 V 10 mA VUSB supplies USB interface circuitry 3 2V 20mA VGP supplies VDD_IO3 of MMP...

Page 26: ...s from AD6721 directly LCD_RS This pin determines whether the data to LCD module are display data or control data LCD_WR Write control Signal LCD_RD Read control Signal But this pin used only for debugging L_DATA 00 15 Parallel data lines LCD_ID LCD type selection signals LCD_ID LCD maker 0V for LGIT 2 8V for Sharp For using 262K color data buses should be 16 bits Properties Spec Unit Active Scree...

Page 27: ...7K VA702 EVLC5S0250 4 7K R700 5 G1 10 G2 1 INOUT_A1 INOUT_A2 2 3 INOUT_A3 4 INOUT_A4 INOUT_B1 9 8 INOUT_B2 INOUT_B3 7 6 INOUT_B4 ICVE10184E150R101FR FL703 1u C706 C707 1u C705 1u 1V8_DVDD 2V8_DOVDD C704 1u VA700 ICVN0505X150FR FL705 ICVE10184E150R101FR G1 5 G2 10 INOUT_A1 1 2 INOUT_A2 INOUT_A3 3 INOUT_A4 4 9 INOUT_B1 INOUT_B2 8 7 INOUT_B3 INOUT_B4 6 2 INOUT_A2 INOUT_A3 3 4 INOUT_A4 9 INOUT_B1 INOU...

Page 28: ...Camera Interface AIT813G U402 This model has a built in 1 3M 1280 x 920 camera module And the camera produces JPG pictures Camera module is controlled by AIT813G Interface is done by I2C and YCbCr format I2C is a control signal and YCbCr is real data interface signal Figure 3 7 1 AIT813G BLOCK DIAGRAM Figure 3 7 2 SENSOR CHIP BLOCK DIAGRAM ...

Page 30: ...uilt in When a key is pressed the corresponding row and column are connected together causing the row input to go low and generate an interrupt The columns rows are then scanned by AD6721 to identify the pressed key MENU 1 T END VOL_UP UP VOL_DOWN Side Key CONF 9 8 2 LEFT 0 CLR RIGHT FAV 4 6 7 5 3 SEND CAMERA SEL DOWN 100K R337 SW307 UP 680 R321 3 4 5 680 R336 CN300 1 2 R325 680 VA301 ESD9X5 0ST5G...

Page 31: ...D6721 for processing coding interleaving etc LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Figure 3 9 Connection between Microphone and AD6721 CLOSE TO MIC 100K 100ohm C207 R223 10 VCC 1 U202 NLAS5223BMNR2G 3 COM1 9 COM2 6 GND IN1 4 IN2 8 5 NC1 NC2 7 NO1 2 NO2 C224 39p 0 1u C217 39p C209 2 2K R218 10u C205 2V8_VEXT 2V5_VMIC 1u C20...

Page 32: ...UT2N1 T15 AOUT2N2 U15 AOUT2P1 T14 U14 AOUT2P2 M17 AOUT3L AOUT3R AFCDAC W18 ACCDETECT 0 C158 R118 39p C160 39p 39p C159 18p C150 4 7 R116 0 R119 SPK_P_ABB AUXOP_R SPK_N_ABB REC_P REC_N AUXOP_L FM_AUDIO_L FM_AUDIO_R AUXIP AUXIN VINNORP VINNORN IP IN QP QN ACOUSTIC MIDI 1608 R413 10K C423 2 2u 1u C430 39K R417 R410 39K 0 1u C424 C440 0 1u 9 6 VDD VO 5 VO 8 _SHUTDOWN 1 TPA6205A1DRBR U403 BYPASS 2 GND ...

Page 33: ...cted LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes H INSERT JACK_DETECT REMOVE CLOSE TO EARJACK L 47p C218 24 R217 FB202 1800 1800 FB201 C220 39p R216 3K 100p C203 C223 1M NA R224 1 5K R220 VA201 EVLC18S02003 R213 220K U201 2 GND 1 OUT VCC 5 3 VIN VIN 4 1800 FB200 NCS2200SQ2T2G COM1 3 COM2 9 GND 6 4 IN1 8 IN2 NC1 5 7 NC2 2 NO1 10 ...

Page 34: ...3 SSC TWH104 HL SSC TWH104 HL 27 R348 LD304 27 R351 VBAT 1u C309 C308 1u SSC TWH104 HL LD311 LD310 SSC TWH104 HL LD301 SSC TWH104 HL 27 R355 LD305 SSC TWH104 HL R356 27 1u C317 C319 1u 1u C314 27 R358 LD300 SSC TWH104 HL R352 27 27 R353 1u C310 27 R357 R350 27 R349 27 C316 C318 1u 1u ICVS0514X350FR VA308 LD302 SSC TWH104 HL R354 27 1u C315 SSC TWH104 HL VBAT SSC TWH104 HL LD307 1u LD308 SSC TWH104...

Page 35: ...G Electronics Inc All right reserved Only for training and service purposes CHARGE PUMP VBAT D2 1 D3 D4 12 11 EN_SET 4 GND IN 5 8 OUTCP U601 AAT3155ITP T1 10 C1 C1 9 C2 7 C2 6 3 D1 2 1u C618 1u C620 R616 1 5K C624 27p C622 27p 27p C623 C625 27p C621 1u C615 R617 NA 10u FB602 MLED4 MLED3 MLED2 MLED1 LCD_DIM_CTRL MLED Figure 3 13 MAIN LCD BACKLIGHT ILLUMINATION Figure 3 14 Vibrator VIBRATOR 220 R609...

Page 36: ...frequencies and provides ful radio compatibility to operate simultaneously with GPS WLAN and cellular radios Figure 3 5 BCM2048 CIRCUIT DIAGRAM USC5 CTS Q 20 200MHz BLUETOOTH FM RADIO 1 USC4 RTS 0 1u C616 C606 1000p 10p C600 C619 TP603 0 1u TP602 56 nH L603 NA R615 C608 1 8p R601 NA 1u C617 47 R607 R606 OUT601 47 47 R605 TP606 2V8_VEXT 2V8_VEXT FB600 47K R612 NA L601 R600 0 TP607 C603 0 1u C607 47...

Page 37: ...IN IMIN is the programmable input for the end of charge current ICDL Program the cradle charge current during the constantcurrent mode _EN Enable logic input BAT Charger output pin _CHG Charge indication pin TA Travel Adaptor Input voltage AC 100V 250V 63Hz Output voltage DC 5 2V Output current Max 700mA Battery Li ion battery Max 4 2V Nom 3 7V Standard battery Capacity 830mAh 1 1 1u C140 VCHARGE ...

Page 38: ...Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 39 4 TROUBLE SHOOTING 4 1 RF Component U502 U503 FL501 X501 Figure 4 1 U502 Power Amp Module SKY77318 U503 AD6548 RF Main Chip Transceiver X501 Crystal 26MHz Clock FL501 FEM ...

Page 39: ... service purposes 4 2 RX Trouble 4 TROUBLE SHOOTING 40 START Re download SW or Do calibration again HP8960 Test mode 109 CH 7 level setting TCH 109CH 60dBm setting BCCH Spectrum analyzer setting Oscilloscope setting 1 Check Crystal Circuit 2 Check Mobile SW FEM 3 Check RX I Q Signal CHECKING FLOW ...

Page 40: ...NG 41 1 Checking Crystal Circuit X501 R508 2 3 GND VCC 5 4 U501 MC74VHC1G04DFT2G R508 0 2V75_VVCXO 1M R509 2 2u C515 1000p C511 26M_BT 26M_DBB TEST POINT 26 MHzO K No No Crystal Circuit is OK See next Page to check Mobile SW See next Page to check Mobile SW Yes Change X501 CHECKING FLOW CIRCUIT WAVEFORM Graph 4 2 1 a Graph 4 2 1 b ...

Page 41: ... C514 5 6nH NA L502 C513 0 5p R518 100ohm 100ohm R517 G2 RF SW501 RF 650 ANT G1 0 1u C534 2 7p L503 R516 100ohm 9 GND5 GND6 10 GND7 11 23 GND8 24 GND9 19 GSM_RX 13 PCS_RX PCS_RX 12 6 TX1G 8 TX2G 22 VCTRL1 VCTRL2 21 VCTRL3 20 VDD 3 ANT 1 15 DCS_RX DCS_RX 14 17 EGSM_RX EGSM_RX 16 GMS_RX 18 2 GND1 GND10 25 26 GND11 4 GND2 5 GND3 7 GND4 FL501 YGHF S006A 39p C545 C544 39p 2 7nH L501 2 2nH R505 22nH R50...

Page 42: ...NT RF with No RF Cable Connected Short Yes Changing SW501 For these 2 test case No Call connection is needed No No Changing the Board Check RF Level of FL501 16 for EGSM FL501 14 12 for DCS PCS Ant SW Mobile SW is OK See next Page to check Rx I Q Signal Pin 16 62dBm Pin 14 12 63dBm No Changing FL501 Yes No For this RF Level test case RX Stand alone Mode is needed refer to chapter 10 Check Vctrl 1 ...

Page 43: ...ny Major difference Refer to graph 4 2 3 C541 U503 C519 VBAT 14 VCC_BBI 4 VCC_BBQ 24 1 VCC_FE VCC_REF 17 VCC_TXVCO 12 13 VDD 15 VLDO1 VLDO2 16 9 VLDO3 REFINB 19 REF_OP 21 28 RX1800 27 RX1800B RX1900 26 25 RX1900B RX850 32 31 RX850B RX900 30 29 RX900B SCLK 6 5 SDATA 7 SEN 11 TXOP_HI TXOP_LO 10 18 VAFC_NC AD6548 U503 GND 33 I 2 3 IB NC 8 Q 23 22 QB 20 REFIN 39p C541 39p C519 C521 0 1u IP QP QN IN TE...

Page 44: ...oses 4 TROUBLE SHOOTING 45 4 3 TX Trouble START Redownload SW or Do calibration again HP8960 Test mode 109 CH 7 level setting TCH 109CH 60dBm setting BCCH Spectrum analyzer setting Oscilloscope setting 1 Check Crystal Circuit 3 Check PAM control signal 4 Check TX I Q Signal 2 Check Mobile SW FEM Checking Flow ...

Page 45: ...rcuit 4 TROUBLE SHOOTING 46 R508 X501 26 MHzO K No No Crystal Circuit is OK See next Page to check Mobile SW See next Page to check Mobile SW Yes Change X501 2 3 GND VCC 5 4 U501 MC74VHC1G04DFT2G R508 0 2V75_VVCXO 1M R509 2 2u C515 1000p C511 26M_BT 26M_DBB TEST POINT CIRCUIT Waveform Checking Flow Graph 4 2 1 a Graph 4 2 1 b Figure 7 ...

Page 46: ... GSM Tx mode TEST POINT CIRCUIT Waveform Change P N C543 2V75_VVCXO 39p R503 1p C514 5 6nH NA L502 C513 0 5p R518 100ohm 100ohm R517 G2 RF SW501 RF 650 ANT G1 0 1u C534 2 7p L503 R516 100ohm 9 GND5 GND6 10 GND7 11 23 GND8 24 GND9 19 GSM_RX 13 PCS_RX PCS_RX 12 6 TX1G 8 TX2G 22 VCTRL1 VCTRL2 21 VCTRL3 20 VDD 3 ANT 1 15 DCS_RX DCS_RX 14 17 EGSM_RX EGSM_RX 16 GMS_RX 18 2 GND1 GND10 25 26 GND11 4 GND2 ...

Page 47: ...501 No No Check C543 C544 C545 Check whether Ant SW Set as TX mode Refer to Graph 4 3 2 Refer to Table 4 3 2 Yes Check Vctrl 1 2 3 Vdd Check RF Level of FL501 Pin 6 forEGSM Pin 8 for DCS PCS Pin6 29 5dBm Pin8 26 5dBm No Yes No Changing board Go to 4 3 4 Checking PAM control signal END For the test TX Stand alone Mode is needed Refer to chapter 10 PL 7 for GSM PL 2 for DCS PCS Checking Flow Table 4...

Page 48: ...VCC1A 6 VCC1B U502 SKY77318 BS 1 3 DCS_PCS_IN DCS_PCS_OUT 15 4 EGSM_IN 11 EGSM_OUT ENABLE R511 220 C517 1000p 220 R510 R515 1K 2V 1M R509 27p C507 1000p C511 100p R514 C516 180 R512 180 1K R504 VBAT C512 33p 24 R507 R513 30 33p C504 39p C506 C508 27p 39p C519 0 01u C509 100ohm R502 R501 100ohm QP PA_EN PA_BAND TX_RAMP Similar Yes No Check TX_RAMP and PAM_EN Any Major Difference or not Similar Yes ...

Page 49: ...9 VLDO3 REFINB 19 REF_OP 21 28 RX1800 27 RX1800B RX1900 26 25 RX1900B RX850 32 31 RX850B RX900 30 29 RX900B SCLK 6 5 SDATA 7 SEN 11 TXOP_HI TXOP_LO 10 18 VAFC_NC AD6548 U503 GND 33 I 2 3 IB NC 8 Q 23 22 QB 20 REFIN 39p C541 39p C519 C521 0 1u IP QP QN IN Re download the Software And calibrate Check if there is Any Major Difference Refer to Graph4 3 4 Similar Yes No Replace U503 TEST POINT CIRCUIT ...

Page 50: ...u C134 1u 1V8_VRTC VUSB 1u C127 C128 1u V14 VSIM_A T19 VUSB_A 2V75_VVCXO VMEMFB W13 VMEMOUT V12 U12 VMEMSEL VMIC U19 VRF M19 W15 VRTC T11 VRTCSEL VEXT_REG1 V11 VEXT_REG2 W11 VGP W14 V8 VCORE W8 VCOREOUT N18 VABB_LDO VAPP P18 L14 VAPPCFG VAPPGATE N19 J8 J9 RESET1P8 K9 RESET2P8 E19 PMTSEL T13 PWREN V17 RESET INT 2V8_VMEM 2 2u 2V5_VMIC C126 1u C133 1u C135 0 1u C136 C132 27p VGP C131 1V8_VCORE 1u _RE...

Page 51: ... LDO outputs at U103 Logic level at RPWRON of U103 HIGH above 1 2V Is the phone power on The phone will Properly operating Charge or Change Battery Check the contact of power key Or dome switch Re download software 1V8_VCORE 1 8V VVCXO 2 75V 2V8_VMEM 2 8V 2V 85_VSIM 2 85V 2V8_VEXT 2 8V 1V8_VRTC 1 8V 2V5_VMIC 2 5V Replace U103 Does it work properly Replace the main board YES YES YES YES YES NO NO N...

Page 52: ...TROUBLE SHOOTING 53 4 5 Charging Trouble CN301 R108 R110 C140 CHARGE 1 1 1u C140 VCHARGE USB_VBUS 8 GND ICDL 9 6 IMIN PGND 11 2 USB USBON 7 4 _CHG _EN 5 _PPR 3 ISL6299 U102 BAT 10 CRDL 1 C141 1u 10K R109 33K R111 1u C139 100K R110 10K R112 220K R113 R108 10K VBAT 2V8_VEXT CHG_STAT CHG_EN TEST POINT CIRCUIT Figure 4 5 ...

Page 53: ...at anode of C140 5 2V Is Voltage across R110 about 0V YES YES YES Is Voltage across R108 about 0V YES Battery is charged YES Charging is properly operating NO NO NO NO NO Resolder the CN301 Pin 4 5 VCHARGE The TA is out of order Change the TA Replace the U103 Replace the U102 Replace the main board Battery is charged NO Change the battery Charging is properly operating YES Checking Flow ...

Page 54: ...lectronics Inc All right reserved Only for training and service purposes 4 6 Vibrator Trouble Q600 R614 R611 R604 R609 R603 VIBRATOR 220 R609 C605 4 7u R603 VBAT 10 Q600 2 3 6 4 1 5 VBAT EMZ2 R611 1 5K 7 5K R614 47K R604 VIBRATOR MOTOR TEST POINT CIRCUIT Figure 4 6 ...

Page 55: ...ration of BB test menu START Is the voltage at pin 3 of Q600 high 0 66V YES NO Is the voltage at pin 2 of Q600 low 2 3V YES Is the voltage at pin 1 of Q600 high VBAT YES Check the soldering of vibrator YES Replace vibrator YES Vibrator Working well Check the soldering of R611 R614 NO Check the soldering of R604 R609 NO Check the soldering of R603 Q600 Resolder or Replace vibrator NO Checking Flow ...

Page 56: ...e Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 57 4 7 LCD Trouble CN700 U405 FL705 FL700 FL701 FL702 FL703 FL707 FL708 FL706 TEST POINT Figure 4 7 ...

Page 57: ...A2 2 3 INOUT_A3 4 INOUT_A4 INOUT_B1 9 8 INOUT_B2 INOUT_B3 7 6 INOUT_B4 ICVE10184E150R101FR FL703 1u C706 C707 1u C705 1u 1V8_DVDD 2V8_DOVDD C704 1u VA700 ICVN0505X150FR FL705 ICVE10184E150R101FR G1 5 G2 10 INOUT_A1 1 2 INOUT_A2 INOUT_A3 3 INOUT_A4 4 9 INOUT_B1 INOUT_B2 8 7 INOUT_B3 INOUT_B4 6 2 INOUT_A2 INOUT_A3 3 4 INOUT_A4 9 INOUT_B1 INOUT_B2 8 7 INOUT_B3 INOUT_B4 6 FL704 ICVE10184E150R500FR G1 ...

Page 58: ...PCB with connector on PCB CN700 ok YES NO Reassemble FPCB with CN700 connector Is Voltage pin8 of U405 2 8V NO Replace U405 Check the soldering of CN700 NO Change the FPCB and try again YES YES YES Check the soldering of EMI filter Resoldering CN700 NO Resoldering EMI filter FL700 FL701 FL702 FL703 FL705 FL707 Does LCD work properly NO Replace LCD module YES LCD working well YES ...

Page 59: ...e Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 60 4 8 Camera Trouble U401 FL708 FL704 U402 AIT813 FL706 FL707 U405 TEST POINT Figure 4 8 Figure 17 ...

Page 60: ...VGP 39p 39p 75K R409 2V8_MV 2V8_MV 39p C401 VSS_PLL A4 _PHCS B2 _PHGPIO_CS F4 F3 _PHLCD2_CS _PHRD B4 _PHWAIT G2 B5 _PHWE M9 _PLCD1_CS _PLCD2_CS M8 M7 _PLCD_RD _PLCD_WE L8 B1 _PRST PVIN_N L12 PVIN_P M12 PVREF_N K10 J11 PVREF_P G3 PVSYNC E7 SVDD SVDD_IO J8 SVSS1 E8 H7 SVSS2 VDD_CORE1 H8 VDD_CORE2 E6 VDD_IO0 C6 H3 VDD_IO1 VDD_IO2 G8 A1 VDD_IO3 VDD_PLL A6 L9 PLCD_A0 A5 PMCLK PMIC_BIAS_N L10 PMIC_BIAS_...

Page 61: ...mera module Does it work properly YES Itís camera moduleís problem Replace the camera module Check the voltage of pin 8 of U401 is 2 8V and Voltage of pin 7 of U401 is 1 8V YES Check the signals of the FL704 FL706 FL707 FL708 YES Camera will work properly NO NO YES Go to the LCD trouble Replace FL704 FL706 FL707 FL708 NO Check the voltage of pin 8 of U405 is 2 8V and Voltage of pin 7 of U401 is 1 ...

Page 62: ...MIDI 1608 R413 10K C423 2 2u 1u C430 39K R417 R410 39K 0 1u C424 C440 0 1u 9 6 VDD VO 5 VO 8 _SHUTDOWN 1 TPA6205A1DRBR U403 BYPASS 2 GND 7 3 IN IN 4 PGND NA C434 C428 0 47u 9 COM2 GND 6 IN1 4 IN2 8 5 NC1 NC2 7 2 NO1 NO2 10 VCC 1 U404 NLAS5223BMNR2G 3 COM1 NA C422 R418 200K VBAT R416 100K C429 10K R415 0 47u C432 220n VBAT SPK_N SPK_RCV_P REC_N SPK_SEL REC_P SPK_P_ABB SPK_N_ABB SPK_N SPK_P SPK_SEL ...

Page 63: ...SHOOTING 64 START Check the state of contact of speaker Speaker Working well Yes Check the Audio signal R413 R415 No Yes Change the U103 Replace Change speaker No Check the Power voltage U403 VBAT And work properly No Yes Change the U403 Check the Power voltage U404 VBAT And work properly No Yes Change the U404 Checking Flow ...

Page 64: ...ining and service purposes 4 TROUBLE SHOOTING 65 4 10 SIM Card Interface Trouble TEST POINT CIRCUIT DIAGRAM R226 J202 C226 SIM CONNECTOR KDS 1 6T 2V85_VSIM 2V85_VSIM C227 NA 15K R226 NA C228 220n C226 3 CLK 4 GND I_O 6 2 RST VCC 1 VPP 5 J202 C229 1000p SIM_RST SIM_CLK SIM_DATA Figure 4 10 ...

Page 65: ...e the SIM Card This phone supports 3V or 1 8V SIM card YES Is Voltage at the pin1 pin6 of J100 2 85V or 1 8V NO Change the U103 NO YES Resolder J202 YES Voltage output of VSIM LDO Is 2 85V Change the SIM Card And try again Does it work Properly YES SIM card is properly working Redownload SW Does it work Properly NO Change the main board NO YES SIM card is properly working Checking Flow ...

Page 66: ...03 C223 1M NA R224 1 5K R220 VA201 EVLC18S02003 R213 220K U201 2 GND 1 OUT VCC 5 3 VIN VIN 4 1800 FB200 NCS2200SQ2T2G COM1 3 COM2 9 GND 6 4 IN1 8 IN2 NC1 5 7 NC2 2 NO1 10 NO2 1 VCC NLAS5223BMNR2G U210 2V8_VEXT C233 0 1u 47p C222 2V8_VMEM 150p C221 C204 1u NA R704 4 7uH L200 10u C216 C208 100u INSTPAR VA200 ESD9X5 0ST5G C219 27p 2V8_VMEM R208 1M 0 1u C210 J201 R221 24 VA202 EVLC18S02003 C214 27p 10...

Page 67: ...f the test Equipment to echo mode Change the earphone and try again NO Can you hear the sound from the earphone Set the audio part of the test equipment to PRBS or Continuous wave mode YES YES Resolder R216 R220 Is voltage level at R216 About 2 8v Resolder R207 NO YES Can you hear the sound from the earphone NO Change the earphone and try again NO Can you hear your voice from the earphone NO Resol...

Page 68: ...LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 69 4 12 KEY backlight Trouble VA308 TEST POINT Figure 4 12 ...

Page 69: ... R358 LD300 SSC TWH104 HL R352 27 27 R353 1u C310 27 R357 R350 27 R349 27 C316 C318 1u 1u ICVS0514X350FR VA308 LD302 SSC TWH104 HL R354 27 1u C315 SSC TWH104 HL VBAT SSC TWH104 HL LD307 1u LD308 SSC TWH104 HL C313 LD309 LD306 SSC TWH104 HL 1u C312 1u C311 R347 27 KEY_BACKLIGHT3 Is the level Period at VA308 Low Duty 70 START Is the level Period at VA308 High Duty 30 NO Check U103 YES Are all LEDs W...

Page 70: ...r Trouble TEST POINT CIRCUIT DIAGRAM U103 R117 R116 C153 0 1u 4 7 R120 C155 39p R121 4 7 39p C157 R117 4 7 39p C154 C156 39p JACKSENSE N15 M16 AIN3COMMON M15 AIN3L N14 AIN3R AOUT1N N16 AOUT1P N17 AOUT2N1 T15 AOUT2N2 U15 AOUT2P1 T14 U14 AOUT2P2 M17 AOUT3L AOUT3R 0 R118 4 7 R116 0 R119 SPK_P_ABB SPK_N_ABB REC_P REC_N FM_AUDIO_L FM_AUDIO_R Figure 4 13 ...

Page 71: ...2 START Does waveform at R1161 and R117 fluctuate NO Change the U103 YES Receiver will work properly SETTING After initialize Agilent 8960 Test GSM850 DCS mode Set the property of audio as PRBS or continuous wave Set the receiving volume of mobile as Max Is receiver connected Properly YES NO Resolder Change the receiver Checking Flow ...

Page 72: ...7 CLOSE TO MIC 100K 100ohm C207 R223 10 VCC 1 U202 NLAS5223BMNR2G 3 COM1 9 COM2 6 GND IN1 4 IN2 8 5 NC1 NC2 7 NO1 2 NO2 C224 39p 0 1u C217 39p C209 2 2K R218 10u C205 2V8_VEXT 2V5_VMIC 1u C206 39p C213 VA204 ICVN0505X150FR 1 2 OB4 15L42 C33L MIC200 39p C212 C225 VA203 ICVN0505X150FR 39p R225 2 2K R222 100ohm R214 1K MIC_N MIC_P MULTI_MIC_N MULTI_MIC_P VINNORN VINNORP MIC_PATH_SEL MIC_PATH_SEL MIC_...

Page 73: ...NG 74 START NO YES Microphone will work properly SETTING After initialize Agilent 8960 Test GBS850 DCS mode YES Check the signal Level at each side of MIC200 Is it a few tens mV AC Check the soldering of R222 R223 C212 C217 Check the Voltage VMIC 2 5V NO Change the microphone YES NO Resolder component Change the U103 Checking Flow ...

Page 74: ...POINT CIRCUIT DIAGRAM X100 R102 C124 1000p _LBS NA C122 C125 NA MC 146_12_5PFX100 32 768KHz 1 2 3 4 WAIT A12 WE W4 OSCIN OSCOUT W3 A17 LWR_LB G5 A18 HWR_UB GPIO_4 G2 GPIO_5 G1 G4 GPIO_2 GPIO_3 G3 F2 GPIO_0 GPIO_1 F1 BURSTCLK A11 CLKIN B9 B11 ADV R102 10M _UBS LCD_IF FLIP BT_LDO_EN CHG_EN CHG_STAT BURSTCLK ADV 26M_DBB _LBS _WAIT VIBRATOR _WR _UBS Figure 4 15 ...

Page 75: ...rvice purposes 4 TROUBLE SHOOTING 76 RTC will work properly Is frequency at R102 about 32 768KHz START Resolder the X100 or change the X100 NO YES YES Is voltage at R102 about 400mV Resolder the X100 or change the X100 NO Is RTC properly working NO Re download software and try again YES Checking Flow ...

Page 76: ...cs Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 77 4 16 Folder on off Trouble TEST POINT CIRCUIT DIAGRAM U400 FLIP SWITCH 0 1u C416 C417 27p U400 EM 1681 FT NC 3 OUT 2 VDD 1 VSS 4 C418 27p 2V8_VEXT FLIP Figure 4 17 ...

Page 77: ...der on off will work properly Is there the magnet in the Folder START Replace U103 Place the magnet properly NO YES Voltage at pin 1 of U400 2 8V YES NO Voltage of VEXT at U103 2 8V NO Resolder U400 YES Open Folder Voltage at pin 1 of U400 2 8V Resolder U400 NO YES Close folder Voltage at pin 1 of U400 0V YES Replace U400 NO Checking Flow ...

Page 78: ...INT CIRCUIT DIAGRAM J200 C200 U200 T FLASH 10u C201 5 1 STBY VIN 3 4 VOUT 2V85_TF U200 BH28FB1WHFV BGND 6 GND 2 NC R206 470K R201 100K R204 100K 100K R200 R203 100K DAT1 8 DAT2 1 DAT3 2 GND1 9 GND2 10 GND3 11 12 GND4 4 VDD 6 VSS J200 5 CLK 3 CMD 7 DAT0 2V85_TF C202 NA NA R202 100K R205 VBAT C200 1u TF_DAT3 TF_DAT1 TF_DAT0 TF_CMD TF_CLK TFLASH_EN TF_DAT2 Figure 4 18 ...

Page 79: ...rved Only for training and service purposes Micro SD Card will work properly Micro SD Detect OK START Re attach or Replace J200 NO YES TF_DAT3 Is High NO YES Check out TF_CLK Data Timing OK Re download SW NO YES YES Replace Micro SD Card Check 2V85_TF C200 2 85V YES NO Change U200 Checking Flow ...

Page 80: ...DDRF2 J3 VDDXO VREGFM_DAC A5 B5 VREG_BT VREG_CTL D5 B2 VSS1 G2 VSS10 VSS11 G4 G10 VSS12 VSS13 H1 J2 VSS14 C2 G5 D9 VDDC2 G7 VDDC3 VDDC4 A7 J10 VDDC5 A4 VDDFM1 VDDFM2 B1 B3 VDDFM3 VDDFM4 J4 K4 VDDFM5 VDDLO J1 K8 VDDO18_1 VDDO18_2 A8 F9 VDDO18_3 VDDO33_1 A9 E10 VDDO33_2 VDDO33_3 GPIO5 B8 GPIO6 GPIO7 D10 B4 LPOIN H2 RES G1 RFION RFIOP F1 RST_N D6 TM0 K7 J7 TM1 TM2 F6 TM3 J6 F7 UART_CTS_N UART_RTS_N C...

Page 81: ...adio OK START Change U600 NO YES FMVCO_LP LN OK NO YES BT_MAIN_CLK_EN HIGH YES Check the ear jack contact YES NO Change U103 26M_BT OK A_GPIO1 3 TP04 06 OK YES YES BT_32K OK FM_AUDIO_L R OK YES Change U600 NO Check C607 Refer to Graph 4 19 2 Check TP601 Check C606 Refer to Graph 4 19 1 Check L603 Refer to Graph 4 19 3 Check C628 C629 Refer to Graph 4 19 4 Checking Flow ...

Page 82: ... 83 4 TROUBLE SHOOTING LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes WAVEFORM Graph 4 19 1 Graph 4 19 2 Graph 4 19 3 Graph 4 19 4 ...

Page 83: ...se Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 5 1 Download A Download Setup Figure 5 1 describes Download setup Figure 5 1 Download Setup 5 DOWNLOAD 84 5 DOWNLOAD ...

Page 84: ... 5 DOWNLOAD LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes B Multi Download Procedure 1 Run GSM Multi Download program and select Setting ...

Page 85: ...nly Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 86 2 Select Configuration from the menu and you may see this window 3 Press key to select DLL file and press Open 5 DOWNLOAD ...

Page 86: ... Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 87 5 DOWNLOAD 4 Press key to select the mot files 5 Select AlchemyData mot and press open 6 Repeat step 4 5 to select CodeData mot ...

Page 87: ...ternal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 88 7 Check if the ADI option is set to Hermes 8 Press OK to end Configuration 5 DOWNLOAD Select Rate ...

Page 88: ...07 LG Electronics Inc All right reserved Only for training and service purposes 89 5 DOWNLOAD 9 Press START to execute download 10 Once downloading is started press STOP button to keep from re downloading after downloading is completed ...

Page 90: ..._GPCS2 GPIO_46_AUXCS2 C8 C6 GPIO_47 GPIO_5 G1 P3 GPIO_55 N3 GPIO_56 GPIO_6 J2 J3 GPIO_13_SRVLIGHT H6 GPIO_14 J6 GPIO_15 K3 GPIO_16 K7 GPIO_17 GPIO_18_JCK B5 D5 GPIO_19_TMS G4 GPIO_2 GPIO_20_TDI A4 C5 GPIO_21_TDO GPIO_22 P4 GPIO_24_ALRTLIGHT D6 GPIO_3 G3 GPIO_33 K1 GPIO_34 L1 M1 R6 G8 GND21 GND22 F12 M3 GND23 GND3 G17 H15 GND4 GND5 J12 GND6 J13 GND7 K6 GND8 L6 GND9 M5 GPCS1 D10 F2 GPIO_0 GPIO_1 F1 ...

Page 91: ...00K R200 1u C206 C227 NA R203 100K 150p C221 DAT1 8 DAT2 1 DAT3 2 GND1 9 GND2 10 GND3 11 12 GND4 4 VDD 6 VSS 15K R226 J200 5 CLK 3 CMD 7 DAT0 39p C213 C204 1u VA204 NA R704 ICVN0505X150FR 1 2 OB4 15L42 C33L MIC200 NA C228 4 7uH L200 10u C216 2V85_TF C208 C202 NA 100u 39p C212 INSTPAR VA200 ESD9X5 0ST5G C219 27p 220n 2V8_VMEM C226 R208 1M 0 1u C210 NA R202 J201 R221 24 C225 VA203 ICVN0505X150FR 39p...

Page 92: ... 1u C314 2V8_VEXT USB_VBUS USB_VBUS 27 R358 RIGHT NA R304 100K R317 LD300 SSC TWH104 HL SW305 R352 27 27 R353 VUSB 1u C310 SEL R307 NA DOWN R314 R335 47 100K IN OUT SW302 ICVFP10181E301FR FL300 GND1 GND2 R332 47 VA307 ESD9X5 0ST5G 680 R333 680 VA303 ICVS0514X350FR R328 R313 100ohm 27 R357 R326 NA SW303 END NA R308 R350 27 4 7u C300 R349 27 680 R341 R331 47 R303 NA 30 31 32 4 5 6 7 8 9 VCHARGE 16 1...

Page 93: ...5 PLCD11 K7 PLCD12 PLCD13 K8 PLCD14 L6 M5 PLCD15 L7 PLCD16 PLCD17 M6 L3 PLCD2 M3 PLCD3 K3 PLCD4 PLCD5 K4 PLCD6 L4 J7 PLCD7 PLCD8 K6 K5 PLCD9 C3 PHD3 D1 PHD4 PHD5 C4 C5 PHD6 PHD7 D2 D3 PHD8 E1 PHD9 G1 PHINT PHLCD_A0 D6 C7 PHLCD_BY F5 PHSYNC H11 PI2S_SCK PI2S_SDO J10 PI2S_WS G12 M1 PLCD0 PLCD1 L2 PGPIO4 G10 H9 PGPIO5 PGPIO6 D12 E11 PGPIO7 G9 PGPIO8 PGPIO9 F10 PHD0 B6 C1 PHD1 D5 PHD10 PHD11 E2 A7 PHD...

Page 94: ... 16 9 VLDO3 L503 REFINB 19 REF_OP 21 28 RX1800 27 RX1800B RX1900 26 25 RX1900B RX850 32 31 RX850B RX900 30 29 RX900B SCLK 6 5 SDATA 7 SEN 11 TXOP_HI TXOP_LO 10 18 VAFC_NC AD6548 U503 GND 33 I 2 3 IB NC 8 Q 23 22 QB 20 REFIN R511 220 C517 1000p 220 R510 R515 1K R516 100ohm 9 GND5 GND6 10 GND7 11 23 GND8 24 GND9 19 GSM_RX 13 PCS_RX PCS_RX 12 6 TX1G 8 TX2G 22 VCTRL1 VCTRL2 21 VCTRL3 20 VDD 3 ANT 1 15...

Page 95: ...OUT_A2 2 3 INOUT_A3 4 INOUT_A4 INOUT_B1 9 8 INOUT_B2 INOUT_B3 7 6 INOUT_B4 ICVE10184E150R101FR FL703 1u C706 C707 1u C705 1u 1V8_DVDD 2V8_DOVDD C704 1u VA700 ICVN0505X150FR FL705 ICVE10184E150R101FR G1 5 G2 10 INOUT_A1 1 2 INOUT_A2 INOUT_A3 3 INOUT_A4 4 9 INOUT_B1 INOUT_B2 8 7 INOUT_B3 INOUT_B4 6 2 INOUT_A2 INOUT_A3 3 4 INOUT_A4 9 INOUT_B1 INOUT_B2 8 7 INOUT_B3 INOUT_B4 6 FL704 ICVE10184E150R500FR...

Page 96: ...12 VSS13 H1 J2 VSS14 C2 G5 D9 VDDC2 G7 VDDC3 VDDC4 A7 J10 VDDC5 A4 VDDFM1 VDDFM2 B1 B3 VDDFM3 VDDFM4 J4 K4 VDDFM5 VDDLO J1 K8 VDDO18_1 VDDO18_2 A8 F9 VDDO18_3 VDDO33_1 A9 E10 VDDO33_2 VDDO33_3 GPIO5 B8 GPIO6 GPIO7 D10 B4 LPOIN H2 RES G1 RFION RFIOP F1 RST_N D6 TM0 K7 J7 TM1 TM2 F6 TM3 J6 F7 UART_CTS_N UART_RTS_N C9 J9 UART_RXD UART_TXD K10 VDDC1 A10 A_GPIO4 E9 K9 A_GPIO5 A_GPIO6 B7 E7 A_GPIO7 FMPL...

Page 97: ...29 3 30 31 32 33 34 35 36 37 38 39 10 11 12 13 14 15 16 17 18 19 2 20 21 22 23 24 CN101 1 47p C103 27p C100 R101 C104 47p 4 7K 2V8_DOVDD TP104 TP101 1V8_DVDD TP102 C107 1u 1V8_DVDD C_DATA07 C_DATA06 C_DATA05 C_DATA04 C_DATA03 C_DATA02 C_DATA01 C_DATA00 C_MCLK C_HS C_VS C_PCLK 2V8_MV VSYNCOUT VBACKUP SPK_RCV_N L_DATA00 L_DATA01 L_DATA02 L_DATA03 L_DATA04 LCD_RESET L_MAIN_LCD_CS LCD_WR C_SCK SPK_RCV...

Page 98: ... 4 5 A B C D E A B C CN100 1 2 3 4 5 CAMERA V_DOWN V_UP KEY_COL0 KEY_ROW0 KEY_COL2 KEY_COL1 KEY_COL1 KEY_COL2 KEY_COL0 KEY_ROW0 TP100 MODEL MG295D 6 CIRCUIT DIAGRAM LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 100: ...LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 101 7 BGA IC Pin Check 7 BGA IC Pin Check U103 AD6721 EUSY0321501 PIN MAP Not used ...

Page 105: ...nít boot the phone CN700 LCD connector No LCD display No sounds No Camera Preview U402 AIT813G BS No Camera Preview U100 PF38F4050L0ZBQ 0 Canít boot the phone U600 BCM2048 No B T Connection No FM tunner 8 PCB LAYOUT LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 107: ... No sounds No camera preview CN102 Camera connector No camera preview CN100 LCD connector No LCD display No Sounds 8 PCB LAYOUT LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 108: ... 109 9 BLOCK DIAGRAM 9 BLOCK DIAGRAM LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Figure 9 1 LG MG295 Block Diagram ...

Page 109: ...e on is 2945 Pressing END will switch back to non engineering mode operation C Key Operation Use Up and Down key to select a menu and press select key to progress the test Pressing back key will switch back to the original test menu D Engineering Mode Menu Tree Engineering Mode BB Test RF Test MF Mode Trace option Call Timer CAMERA LCD Backlight Buzzer Vibrator ADC Battery Audio DAI Bluetooth SAR ...

Page 110: ...ht on LCD Backlight on 2 Backlight off LCD Backlight off 3 Backlight value This controls brightness of Backlight When entering into the menu the present backlight value in the phone is displayed Use Left Right key to adjust the level of brightness The value of the brightness set at last will be saved in the NVRAM 10 1 4 Buzzer This menu is to test the melody sound 1 Melody on Melody sound is playe...

Page 111: ...BAT_INCALL_LIMIT SHUT_DOWN_VOLTAGE BAT_RECHARGE_LMT 2 TEMP Cal This displays the value of Temperature Calibration The following menus are displayed in order TEMP_HIGH_LIMIT TEMP_HIGH_RECHARGE_LMT TEMP_LOW_RECHARGE_LMT TEMP_LOW_LIMIT 10 1 8 Audio This is NOT a necessary menu to be used by neither engineers nor users 10 1 9 DAI Digital Audio Interface This menu is to set the Digital Audio Interface ...

Page 112: ...r completing the test 10 3 1 All auto test LCD Backlight Vibrator Buzzer Key Pad Mic Speaker 10 3 2 Backlight LCD Backlight is on for about 1 5 seconds at the same time then off 10 3 3 Buzzer This menu is to test the volume of Melody It rings in the following sequence Volume 1 Volume 2 Volume 3 Volume 0 mute Volume 4 Volume 5 10 3 4 Vibrator Vibrator is on for about 1 5 seconds 10 3 5 LCD 1 LCD Ma...

Page 113: ...timer MENU 5 This menu is to set the Digital Audio Interface Mode for Speech Transcoder and Acoustic testing 1 All calls This displays total conversation time User cannot reset this value 2 Reset settings This resets total conversation time to this 00 00 00 10 6 Fact Reset MENU 6 This Factory Reset menu is to format data block in the flash memory and this procedure set up the default value in data...

Page 114: ...og Menu select the values as explained below Port select a correct COM port Baud rate 115000 Leave the rest as default values B Tx 1 Selecting Channel Select one of GSM or DCS PCS Band and input appropriate channel 2 Selecting APC a Select either Power level or Scaling Factor b Power level Input appropriate value GSM850 between 5 19 or DCS PCS between 0 15 c Scaling Factor A Ramp Factor appears on...

Page 115: ... Inc All right reserved Only for training and service purposes 11 3 Means of Test a Select a COM port b Set the values in Tx or Rx c Select band and channel d After setting them all above press connect button e Press the start button Connect Button Figure 11 3 1 HW test program ...

Page 116: ...LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 117 11 STAND ALONE TEST Figure 11 3 2 HW test setting Figure 11 3 3 Ramping profile ...

Page 117: ...supply Auto cal generates calibration data by communicating with phone and measuring equipment then write it into calibration data block of flash memory in GSM phone 12 2 Equipment List Figure 12 2 1 Equipment Setup Equipment for Calibration Type Model Brand Wireless Communication Test Set HP 8960 Agilent RS 232 Cable and Test JIG LG RF Cable LG Power Supply HP 66311B Agilent GPIO interface card H...

Page 118: ...Jig Power Switch Number Name Description Switch 1 ADI REMOTE In ON state phone is awaked It used ADI chipset Switch 2 TI REMOTE In ON state phone is awaked It is used TI chipset Switch 3 VBAT Power is provided for phone from battery Switch 4 PS Power is provided for phone from Power supply Table 12 3 2 Jig DIP Switch LED Number Name Description LED 1 Power Power is provided for Test Jig LED 2 TA I...

Page 119: ...port of PC and MON port of TEST JIG in general 2 Set the Power Supply 4 0V 3 Set the 3rd 4th of DIP SW ON state always 4 Press the Phone power key if the Remote ON is used 1st ON state 12 4 Procedure 1 Connect as Fig 12 2 2 RS232 serial cable is connected between COM port of PC and MON port of TEST JIG in general 2 Run Hot_Kimchi exe to start calibration 3 From the Calibration menu Select MG295 3 ...

Page 121: ...ue Set band EGSM and press Start button the result window will show correction values per every power level and gain code and the same measure is performed per every frequency 12 6 APC This procedure is for Tx calibration In this procedure you can get proper scale factor value and measured power level 12 7 ADC This procedure is for battery calibration You can get main Battery Config Table and temp...

Page 122: ...9 49 11 7 19 42 22 10 29 14 8 23 27 1 25 6 28 39 50 36 35 47 15 16 41 46 2 40 13 18 26 17 37 13 EXPLODED VIEW REPLACEMENT PART LIST 13 1 EXPLODED VIEW LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 124: ...NMOLD BFAA0074901 SILVER 0 1 39 2 81 1 Silver 5 MCJJ00 COVER FOLDER UPPER MCJJ0048801 MOLD PC LUPOY SC 1004A 12 5 MICC00 INSERT FRONT UPPER MICC0008901 Silver 5 MPBJ00 PAD MOTOR MPBJ0037401 COMPLEX empty 35 5 MPBN00 PAD SPEAKER MPBN0042901 COMPLEX empty 36 5 MPBQ00 PAD LCD SUB MPBQ0032401 COMPLEX empty 1 1 33 5 MPBT00 PAD CAMERA MPBT0043001 COMPLEX empty 0 4 32 5 MPBU00 PAD CONNECTOR MPBU0004201 C...

Page 125: ... PMMA MR 200 52 3 ACGM00 COVER ASSY REAR ACGM0091701 D 4 MCCC00 CAP EARPHONE JACK MCCC0045601 MOLD Urethane Rubber S190A 6 4 MCCE00 CAP RECEPTACLE MCCE0038301 MOLD Urethane Rubber S190A 8 4 MCJN00 COVER REAR MCJN0068801 MOLD PC LUPOY SC 1004A 14 4 MGAD00 GASKET SHIELD FORM MGAD0145101 COMPLEX empty 22 4 MGAZ00 GASKET MGAZ0056901 COMPLEX empty 23 4 MLAB00 LABEL A S MLAB0001102 C2000 USASV DIA 4 0 W...

Page 126: ...06 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 7 C107 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 7 CN100 CONNECTOR BOARD TO BOARD ENBY0035901 40 PIN 0 4 mm ETC H 1 0 Plug 7 CN101 CONNECTOR BOARD TO BOARD ENBY0036701 60 PIN 0 4 mm ETC H 1 0 Plug 7 CN102 CONNECTOR BOARD TO BOARD ENBY0019101 24 PIN 0 4 mm STRAIGHT H1 5 MALE 7 FL1 FILTER EMI POWER SFEY0010501 SMD SMD 18 V ...

Page 127: ...08 R TP 6 C102 CAP CERAMIC CHIP ECCH0000182 0 1 uF 10V K X5R HD 1005 R TP 6 C103 CAP CERAMIC CHIP ECCH0005604 10 uF 6 3V M X5R TC 1608 R TP 6 C104 CAP CERAMIC CHIP ECCH0000182 0 1 uF 10V K X5R HD 1005 R TP 6 C105 CAP CERAMIC CHIP ECCH0000182 0 1 uF 10V K X5R HD 1005 R TP 6 C106 CAP CERAMIC CHIP ECCH0000182 0 1 uF 10V K X5R HD 1005 R TP 6 C107 CAP CERAMIC CHIP ECCH0000182 0 1 uF 10V K X5R HD 1005 R...

Page 128: ...TC 1005 R TP 6 C133 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C134 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C135 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C136 CAP CERAMIC CHIP ECCH0000182 0 1 uF 10V K X5R HD 1005 R TP 6 C137 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C139 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R...

Page 129: ...R TP 6 C205 CAP TANTAL CHIP ECTH0004801 10 uF 6 3V M STD 1608 R TP 6 C206 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C207 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 C208 CAP TANTAL CHIP ECTH0005301 100 uF 6 3V M L_ESR 3216 R TP empty empty empty 3 2X1 6X1MM empty empty empty 6 C209 CAP CERAMIC CHIP ECCH0000120 39 pF 50V J NP0 TC 1005 R TP 6 C210 CAP CERAMIC CHIP ECCH0...

Page 130: ...P 6 C307 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C400 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C401 CAP CERAMIC CHIP ECCH0000120 39 pF 50V J NP0 TC 1005 R TP 6 C402 CAP CERAMIC CHIP ECCH0000182 0 1 uF 10V K X5R HD 1005 R TP 6 C403 CAP CERAMIC CHIP ECCH0005604 10 uF 6 3V M X5R TC 1608 R TP 6 C404 CAP CERAMIC CHIP ECCH0000155 10 nF 16V K X7R HD 1005 R TP 6 C405...

Page 131: ... K X5R TC 1005 R TP 6 C437 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C438 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C439 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C440 CAP CERAMIC CHIP ECCH0000182 0 1 uF 10V K X5R HD 1005 R TP 6 C501 CAP CHIP MAKER ECZH0000816 12 pF 50V J NP0 TC 1005 R TP 6 C502 CAP CERAMIC CHIP ECCH0000155 10 nF 16V K X7R HD 1...

Page 132: ... K X5R HD 1005 R TP 6 C531 CAP CERAMIC CHIP ECCH0000182 0 1 uF 10V K X5R HD 1005 R TP 6 C532 CAP CHIP MAKER ECZH0000839 4 7 pF 50V C NP0 TC 1005 R TP 6 C533 CAP CERAMIC CHIP ECCH0000182 0 1 uF 10V K X5R HD 1005 R TP 6 C534 CAP CERAMIC CHIP ECCH0000182 0 1 uF 10V K X5R HD 1005 R TP 6 C535 CAP CHIP MAKER ECZH0000830 33 pF 50V J NP0 TC 1005 R TP 6 C536 CAP CHIP MAKER ECZH0000830 33 pF 50V J NP0 TC 10...

Page 133: ...P CERAMIC CHIP ECCH0000182 0 1 uF 10V K X5R HD 1005 R TP 6 C617 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C618 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C619 CAP CERAMIC CHIP ECCH0000182 0 1 uF 10V K X5R HD 1005 R TP 6 C620 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C621 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C622 CAP CHIP M...

Page 134: ...ILTER SEPERATOR SFAY0007201 850 900 1800 1900 4 0 dB 4 0 dB dB dB ETC Quad band FEM 6 FL600 FILTER CERAMIC SFCY0000901 2450 MHz 2 00 1 25 0 95 SMD Bluetooth Band Pass Filter 6 FL700 FILTER EMI POWER SFEY0010501 SMD SMD 18 V 4ch EMI_ESD Filter 100Ohm 15pF Pb free 6 FL701 FILTER EMI POWER SFEY0010501 SMD SMD 18 V 4ch EMI_ESD Filter 100Ohm 15pF Pb free 6 FL702 FILTER EMI POWER SFEY0010501 SMD SMD 18 ...

Page 135: ... PNP 150 mA 6 R100 RES CHIP MAKER ERHZ0000443 2200 ohm 1 16W J 1005 R TP 6 R101 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 6 R102 RES CHIP ERHY0000512 10M ohm 1 16W J 1608 R TP 6 R103 RES CHIP MAKER ERHZ0000405 10 Kohm 1 16W J 1005 R TP 6 R104 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R105 RES CHIP MAKER ERHZ0000405 10 Kohm 1 16W J 1005 R TP 6 R106 RES CHIP MAKER ERHZ0000465 3300...

Page 136: ... MAKER ERHZ0000522 24 ohm 1 16W J 1005 R TP 6 R218 RES CHIP MAKER ERHZ0000443 2200 ohm 1 16W J 1005 R TP 6 R220 RES CHIP MAKER ERHZ0000529 1 5 Kohm 1 16W J 1005 R TP 6 R221 RES CHIP MAKER ERHZ0000522 24 ohm 1 16W J 1005 R TP 6 R222 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 6 R223 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 6 R224 RES CHIP MAKER ERHZ0000407 1000 Kohm 1 16W J 1005 R TP 6 R22...

Page 137: ...Z0002401 12 Kohm 1 16W J 1005 R TP 6 R359 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R400 RES CHIP MAKER ERHZ0000402 10 ohm 1 16W J 1005 R TP 6 R402 RES CHIP MAKER ERHZ0000402 10 ohm 1 16W J 1005 R TP 6 R408 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R409 RES CHIP ERHY0000150 75K ohm 1 16W F 1005 R TP 6 R410 RES CHIP MAKER ERHZ0000476 39 Kohm 1 16W J 1005 R TP 6 R413 RES ...

Page 138: ... 1 16W J 1005 R TP 6 R604 RES CHIP MAKER ERHZ0000486 47 Kohm 1 16W J 1005 R TP 6 R605 RES CHIP MAKER ERHZ0000483 47 ohm 1 16W J 1005 R TP 6 R606 RES CHIP MAKER ERHZ0000483 47 ohm 1 16W J 1005 R TP 6 R607 RES CHIP MAKER ERHZ0000483 47 ohm 1 16W J 1005 R TP 6 R608 RES CHIP MAKER ERHZ0000483 47 ohm 1 16W J 1005 R TP 6 R609 RES CHIP ERHY0003501 220 ohm 1 16W J 1005 R TP 6 R610 RES CHIP MAKER ERHZ00004...

Page 139: ...C EUSY0335701 QFN 8 PIN R TP 1 2W Mono Differencial Audio AMP 6 U404 IC EUSY0300101 WQFN 10 PIN R TP Small package Dual SPDT analog Switch PB Free 6 U405 IC EUSY0319001 WDFN 8L 8 PIN R TP 300mA 300mA 2 8V 1 8V Dual LDO 6 U501 IC EUSY0196901 SC70 5 5 PIN R TP Single Inverter Pb Free 6 U502 PAM SMPY0014001 35 5 dBm 56 A dBc dB 6x6x1 15 SMD Tri Band 6 U503 IC EUSY0280101 LFCSP 32 32 PIN R TP GSM QUAD...

Page 140: ...6 C309 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C310 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C311 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C312 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C313 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C314 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C315 CAP...

Page 141: ...33 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R336 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R338 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R339 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R340 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R341 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R342 RES CHIP MAKER ERHZ0000505 680 ohm 1 ...

Page 142: ...No Description Part Number Spec Color Remark 6 SPFY00 PCB MAIN SPFY0150301 FR 4 mm BUILD UP 8 37 PCB MAIN SPFY0160201 FR 4 0 8 mm BUILD UP 8 6 U400 IC EUSY0250001 Leaded 4 PIN R TP Hall IC 6 VA307 DIODE TVS EDTY0009101 SOD 923 5 V 150 mW R TP 1 0 0 6 0 4 6 VA308 VARISTOR SEVY0004201 14 V SMD 120pF 1005 5 WSYY00 SOFTWARE WSYY0643201 MG295dP40FL 55 V10b 724 06 AUG 17 2007 5 ...

Page 143: ...45001 MOLD PC LUPOY SC 1004A E 10 3 SBPL00 BATTERY PACK LI ION SBPL0086002 3 7 V 830 mAh 1 CELL PRISMATIC KG120 BATT Latin American Label Pb Free 3 7 830 0 2C PRISMATIC 50x34x42 BLACK Innerpack Latin American Label 3 SGEY00 EAR PHONE EAR MIKE SET SGEY0003503 FG101 STERO Y TYPE 16OHM 3 SSAD00 ADAPTOR AC DC SSAD0023801 100 250V 63 Hz 5 2 V 8 A IEC 60950 EN 60950 WALL 2P DC PIN PLUG 13 3 Accessory No...

Page 144: ...Note ...

Page 145: ...Note ...

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