LG D405 Service Manual Download

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3. TROUBLE SHOOTING

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Only for training and service purposes

LGE Internal Use Only

3. TROUBLE SHOOTING

3.1 RF Component

<Main Top>

U1100

FL1602

U1601

U1602

FL1600

FL1100

FL1603

FL1101

U1500

Summary of Contents for D405

Page 1: ...Internal Use Only Service Manual LG D405 Date March 2014 Issue 0 9 ...

Page 2: ... B8 Block 28 3 5 CheckingWCDMA Block 31 3 6 Checking GSM Block 58 3 7 GPSTrouble Shooting 65 3 8WIFI BTTrouble Shooting 70 3 9 AudioTrouble 75 3 10 Camera 88 3 11 Main LCDTrouble Shooting 93 3 12Touch troubleshooting 96 3 13VibratorTrouble Shooting 99 3 14 Gyro AccelTrouble Shooting 101 3 15 Compass sensor troubleshooting 103 3 16 Proximity Sensor troubleshooting 105 3 17 Power ONTroubleshooting 1...

Page 3: ...ccessed through or connected to it The manufacturer will not be responsible for any charges that result from such unauthorized 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...

Page 4: ...ation A phone may interfere with sensitive laboratory equipment medical equipment etc Interference from unsuppressed 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 ex...

Page 5: ...nt Digital Baseband MSM8226 Qualcomm Analog Baseband MSM8226 Qualcomm RF Chip WTR2605 Qualcomm 2 1 Product Name LG D405 WCDMA900 1900 2100 EGSM GSM850 DCS1800 PCS1900 HSPA GPRS Class 12 EDGE Class 12 2 2 Supporting Standard 2 3 Main Parts GSM Solution 2 1 Product Name LG D410 WCDMA900 1900 2100 EGSM GSM850 DCS1800 PCS1900 HSPA GPRS Class 12 EDGE Class 12 2 2 Supporting Standard Item Feature Commen...

Page 6: ... WCDMA FDD1 106 7dBm WCDMA FDD2 106 7dBm WCDMA FDD8 103 7dBm EGSM 105dBm GSM850 105dBm DCS 1800 105dBm PCS 1900 105dBm TX output power WCDMA GSM GPRS WCDMA 24dBm 3 84MHz 1 3dBm EGSM 33 dBm GSM850 33dBm DCS 1800 30dBm PCS 1900 30dBm Class3 WCDMA Class4 EGSM Class4 GSM850 Class1 PCS Class1 DCS EDGE GSM850 27dBm GSM 900 27 dBm DCS 1800 26 dBm PCS 1900 26 dBm E2 GSM900 E2 PCS E2 DCS GPRS compatibility...

Page 7: ... Memory eMMC 8GByte SDRAM 1GByte Speech coding FR EFR HR AMR Data Fax Built in Data Fax support Vibrator Built in Vibrator BlueTooth V4 0 MIDI for Buzzer Function 128 Poly Music Player MP3 AAC e AAC WMA RA WAV Video Player Playback 30fps 1080p H 264 263 MPEG4 2 WMV9 VC1 VP8 DivX XVID Recording 30fps 1080p H 264 263 MPEG4 8 30fps 720p Wi Fi display Camcorder MPEG4 8 Voice Recording Yes Speaker Phon...

Page 8: ...right reserved Only for training and service purposes LGE Internal Use Only Specification GSM WCDMA Stand by current Sleep Idle Avg Under 4 5mA P P 5 Under 4 5mA DRX 7 Talk current Under 400 mA GSM Level 5 Under 600mA Max Power Avg Under 400 mA Tx10dBm Avg ...

Page 9: ...Messaging Email Camera PC Sync No Speed Dial Yes Voice mail 1 key Profile Yes not same with feature phone setting CLIP CLIR Yes Phone Book Name Number Cose save mode Email Address Groups Ringtone Organization IM Notes Nickname website Events There is no limitation on the number of items It depends on available memory amount Last Dial Number Yes Last ReceivedNumber Yes Last Missed Number Yes Search...

Page 10: ...ends on available memory amount EMS is not supported SMS Over GPRS Yes EMS Melody Picture Send Receive Save No MMS MPEG4 Send Receive Save Yes Long Message Yes Cell Broadcast Yes Download Yes Game Yes Calendar Yes Memo No World Clock Yes Unit Convert No Stop Watch Yes Wall Paper Yes WAP Browser Yes WAP stack and wml are not supported Download Melody Wallpaper Yes Over web browser or Google Play SI...

Page 11: ...LGE Internal Use Only Camera Yes Main 8M AF VT VGA JAVA No Android don t support JAVA Voice Dial No IrDa Yes Bluetooth Yes Ver 4 0 FM radio Yes GPRS Yes Class 12 EDGE Yes Class 12 Hold Retrieve Yes Conference Call Yes Max 7 DTMF Yes Memo pad No TTY No AMR Yes Both NB and WB SyncML No IM Yes Hangouts Email Yes ...

Page 12: ...to less than 1800kHz offset 200kHz 36dBm 600kHz 51dBm 56dBm Spectrum due to modulation out to larger than 1800kHz offset to the edge of the transmit band GSM 1800 3000kHz 63dBc 46dBm 3000kHz 6000kHz 65dBc 46dBm 6000kHz 71dBc 46dBm DCS 1800 3000kHz 65dBc 51dBm 6000kHz 73dBc 51dBm Spectrum due to switching transient 400kHz 19dBm 22dBm 5 0 600kHz 21dBm 24dBm 5 0 Reference Sensitivity TCH FS Class II ...

Page 13: ... 3 84 Mcps 99 of power Adjacent Channel Leakage Power Ratio ACLR 33 dB 5 MHz 43 dB 10 MHz Spurious Emissions f fc 12 5 MHz 36 dBm 1 kHz RW 9 kHz f 150 kHz 36 dBm 10 kHz RW 150 KHz f 30 MHz 36 dBm 100 kHz RW 30 MHz f 1 GHz 30 dBm 1 MHz RW 1 GHz f 12 75 GHz 60 dBm 3 84 MHz RW 880 MHz f 915 MHz 60 dBm 3 84 MHz RW 1920 MHz f 1980 MHz 67 dBm 100 kHz RW 925 MHz f 935 MHz 79 dBm 100 kHz RW 935 MHz f 960 ...

Page 14: ...n Îor 92 7 dBm 3 84 MHz Ioac 52 dBm 3 84 MHz 5 MHz Blocking Characteristic BER 0 001 when Îor 103 7 dBm 3 84 MHz Iblocking 56 dBm 3 84 MHz Fuw offset 10 MHz orIblocking 44 dBm 3 84 MHz Fuw offset 15 MHz Spurious Response BER 0 001 when Îor 103 7 dBm 3 84 MHz Iblocking 44 dBm Intermodulation BER 0 001 when Îor 103 7 dBm 3 84 MHz Iouw1 46 dBm Fuw1 offset 10 MHz Iouw2 46 dBm 3 84 MHz Fuw2 offset 20 M...

Page 15: ...st in table C 10 1 4 Power step Power step slot boundary Power step size P dB Transmitter power step tolerance dB 5 1 Start of Ack Nack 6 2 3 2 Start of CQI 1 0 6 3 Middle of CQI 0 0 6 4 End of CQI 5 2 3 Spectrum Emission Mask Sub Test 1 1 15 2 12 15 3 13 15 4 15 8 5 15 7 6 15 0 Frequency offset from carrier ᇞf Minimum requirement Measurement Bandwidth 2 5 3 5 MHz 35 15 ᇞf 2 5 dBc 30 kHz 3 5 7 5 M...

Page 16: ...es LGE Internal Use Only 5 HSDPA receiver specification 5 HSDPA receiver specification Item Specification Receive Frequency Band1 2110 MHz 2170 MHz Band2 1930 MHz 1990 MHz Band8 925 MHz 960MHz Maximum Input Level BLER or R 16QAM Only Sub Test 1 1 15 2 12 15 3 13 15 4 15 8 5 15 7 6 15 0 BLER 10 or R 700kbps ...

Page 17: ...Hz and fc 11MHz f fc 22MHz 50 f fc 22MHz and f fc 22MHz Power ramp on off time 2us Carrier Suppression 15dB Modulation Accuracy Peak EVM 35 Spurious Emissions 36 dBm 30MHz 1GHz 30 dBm above 1GHz 12 75GHz 47 dBm 1 8GHz 1 9GHz 47 dBm 5 15GHz 5 3GHz Rx Min input Sensitivity 80 dBm 2Mbps DQPSK FER 8 76 dBm 11Mbps CCK FER 8 Rx Max input Sensitivity 4 dBm 2Mbps DQPSK FER 8 10 dBm 11Mbps CCK FER 8 Rx Adj...

Page 18: ... 9Mbps 10dB 12Mbps 13dB 18Mbps 16dB 24Mbps 19dB 36Mbps 22dB 48Mbps 25dB 54Mbps Spurious Emissions 36 dBm 30MHz 1GHz 30 dBm above 1GHz 12 75GHz 47 dBm 1 8GHz 1 9GHz 47 dBm 5 15GHz 5 3GHz Rx Min input Sensitivity PER 10 82dBm 6Mbps 81dBm 9Mbps 79dBm 12Mbps 77dBm 18Mbps 74dBm 24Mbps 70dBm 36Mbps 66dBm 48Mbps 65dBm 54Mbps Rx Max input Sensitivity 20dBm 6 9 12 18 24 36 48 54Mbps PER 10 Rx Adjacent Chan...

Page 19: ...error rms EVM 5dB 6 5Mbps 10dB 13Mbps 13dB 19 5Mbps 16dB 26Mbps 19dB 39Mbps 22dB 52Mbps 22dB 58 5Mbps 28dB 65Mbps Spurious Emissions 36 dBm 30MHz 1GHz 30 dBm above 1GHz 12 75GHz 47 dBm 1 8GHz 1 9GHz 47 dBm 5 15GHz 5 3GHz Rx Min input Sensitivity PER 10 82dBm 6 5Mbps 79dBm 13Mbps 77dBm 19 5Mbps 74dBm 26Mbps 70dBm 39Mbps 66dBm 52Mbps 65dBm 58 5Mbps 64dBm 65Mbps Rx Max input Sensitivity 20dBm 6 5 13 ...

Page 20: ...mment WCDMA RSCP GSM RSSI 5 4 89 2 91 2 1 Call Connected CPIPH Level 3 3 4 3 94 2 96 2 3 2 100 2 99 2 2 1 104 2 103 2 1 0 110 2 105 2 9 GPS receiver specification 10 Signal Bar LGE Internal Use Only 9 GPS receiver specification Item Specification Receive Frequency 1574 42 MHz 1576 42 MHz Minimum Sensitivity 1 satellite 142dBm 7 satellites 147dBm at coarse time aiding 10 Signal Bar Antenna BAR Spec...

Page 21: ...21 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 TROUBLE SHOOTING 3 1 RF Component Main Top U1100 FL1602 U1601 U1602 FL1600 FL1100 FL1603 FL1101 U1500 ...

Page 22: ...escription Reference Description U1100 FEM GSM PAM U1101 Front End module U1500 WTR2605 U1600 WCDMA B1 PAM U1602 WCDMA B2 B5 Dual PAM U1603 WCDMA B1 LNA U1604 WCDMA B2 LNA FL1100 DCS PCS Dual Saw Filter FL1101 GSM 850 Rx SAW Filter FL1600 WCDMA B1 Duplexer FL1601 WCDMA B5 Duplexer FL1602 WCDMA B2 Duplexer FL1603 WCDMA B1 TX SAW SW101 MOBILE S W Main Bot SW101 ...

Page 23: ...3 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 2 SIGNAL PATH WCDMA B1 B8 and B2 TX Signal PATH 1 WCDMA B1 TX PATH 2 WCDMA B8 TX PATH 3 WCDMA B2 TX PATH ...

Page 24: ...OOTING 24 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only WCDMA B1 B2 and B8 RX Signal PATH 1 WCDMA B1 RX PATH 2 WCDMA B8 RX PATH 3 WCDMA B2 RX PATH ...

Page 25: ... LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only GSM850 GSM900 DCS1800 PCS1900 RX TX Signal PATH 1 GSM900 RX PATH 2 GSM850 RX PATH 3 GSM1900 RX PATH 4 GSM1800 RX PATH 5 GSM COMMON TX PATH ...

Page 26: ...ctronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 3 Checking XO Block The output frequency 19 2MHz of XO X4100 is used as the reference one of WTR2605 and PM8226 internal VCO Main Bot Main Top TP1 TP2 ...

Page 27: ...SET_N SPMI_CLK SPMI_DATA XO_THERM GND_XOADC XTAL_19M_IN XTAL_19M_OUT GND_XO_BUFF GND_XO BB_CLK1_EN RF_CLK1 RF_CLK2 BB_CLK1 BB_CLK2 SLEEP_CLK1 VREF_BAT_THM VREF_LPDDR REF_BYP GND_REF 0 R4108 VREF_LPDDR2 VREF_BAT_THERM DNI C4102 C4101 DNI C4100 1n 0 1u C4106 R4107 0 R4104 10K DNI C4196 TP4103 R4112 0 R4110 0 VREG_L12_1V8 0 R4114 X4100 1RAA19200AAA 19 2MHz 2 1 3 4 SENSOR XTAL2 XTAL1 GND1 WTR0_XO_IN N...

Page 28: ... SHOOTING 28 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 4 Checking FEMID GSM W B1 B2 B8 Block Main Bot TP2 TP1 TP3 TP4 TP5 TP9 TP8 TP7 TP6 ...

Page 29: ...139 DNI C1120 C1119 DNI C1114 0 1u 8 2n L1128 U1100 EAT62073401 SKY77573 31 43 42 41 40 39 37 38 35 36 34 26 27 28 29 30 31 32 33 23 22 9 12 7 20 21 19 15 2 18 8 10 11 14 16 17 13 1 25 6 5 4 3 24 TRX1 GND3 VCC1 VCC2 GND4 GND17 GND1 GND11 GND14 GND13 GND12 GND9 GND8 GND6 RX1 GND2 ANT SPDT_IN SPDT_OUT RX2 GND5 GND10 GND7 GND15 GND16 NC1 VBATT GND20 TRX4 GND19 TRX3 GND18 TRX2 NC2 RF_IN SPDT SW0 SW1 H...

Page 30: ... 900 TX L L H L L L L LB_MPM G850 900 TX L L H L L L H LB_LPM G850 900 TX L L H L L H L LB_ULPM G850 900 TX L L H L L H H HB_HPM G1800 1900 TX L H L L L L L HB_MPM G1800 1900 TX L H L L L L H HB_LPM G1800 1900 TX L H L L L H L HB_ULPM G1800 1900 TX L H L L L H H TRX1 W B1 B4 TRX H L L L L TRX2 W B2 TRX H L L H L TRX3 G900 850 RX H L H L L TRX4 WB5 B8 TRX G850 900 RX H L H H L RX1 G1900 RX H H H H ...

Page 31: ...ht 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Check FEMID Block Refer to 3 4 Check XO Block Refer to 3 3 Check RFTRX Level START Re download Cal 3 5 Checking WCDMA Block ...

Page 32: ...014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 5 1 Checking XO 19 2MHz Block Refer to 3 3 3 5 2 Checking FEMID Block Refer to 3 4 3 5 3 Checking RFTX Level WCDMA B1 TP1 Main Bot ...

Page 33: ...R1110 3 3M C1163 100p 100p C1164 VREG_L6_1V8 C1160 100p L1136 DNI DNI L1137 L1148 27n SW101 4 3 2 1 ANT COMMON G3 G4 FL1101 881 5MHz IN 1 OUT 4 G1 2 G2 3 G3 5 L1108 DNI 100p C1107 L1107 DNI C1108 100p 100p C1106 15n L1140 L1102 1 2n L1101 100n C1101 18p R1107 4 7K 100p C1165 WTR_PRX_LB_2_IN RADIATION_PWR_ANT G850 EAM62732801 EAM62732901 G900 SWAP the RX Filter TP1 Main Top TP2 TP3 ...

Page 34: ...1600 Yes No Check PAM Yes No 10u C1617 TOL 0 01 R1600 51 VPA0 100p C1676 C1674 DNI 1 5n C1618 VPA_BATT0 DNI C1607 C1613 10u SKY77761 EAN62687101 U1600 PGND 11 VCC1 1 VCC2 10 RFIN 2 RFOUT 9 VMODE_1 3 CPL_IN 8 VMODE_0 4 GND 7 VEN 5 CPL_OUT 6 DNI C1610 C1609 DNI DNI C1608 L1616 1n 10n C1614 DNI C1666 C1675 DNI 100p C1671 DNI C1670 C1669 DNI 100p C1672 1950MHz FL1603 5 3 2 4 1 IN OUT G1 G2 G3 DNI C167...

Page 35: ... PAM Gain Control PA0_R1 C1610 PAM Gain Control Main Top TP2 TP1 TP3 10u C1617 TOL 0 01 R1600 51 VPA0 100p C1676 1 5n C1618 VPA_BATT0 C1613 10u SKY77761 EAN62687101 U1600 PGND 11 VCC1 1 VCC2 10 RFIN 2 RFOUT 9 VMODE_1 3 CPL_IN 8 VMODE_0 4 GND 7 VEN 5 CPL_OUT 6 DNI C1610 C1609 DNI DNI C1608 10n C1614 DNI C1666 C1669 DNI 100p C1672 DNI C1673 PA0_R_0 PA0_R_1 CPL_IN_OUT PA0_ON_1 DRBFM TP2 TP1 TP3 ...

Page 36: ...right 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only PA LOGIC B1 B4 POWER MODE PA0_ON_1 PA0_R0 PA0_R1 SHUT DOWN L L L STAND BY L HP MODE H L L MP MODE H H L LP MODE H H H ...

Page 37: ... R1109 750KTOL 0 01 R1110 3 3M C1163 100p 100p C1164 VREG_L6_1V8 C1160 100p L1136 DNI DNI L1137 L1148 27n SW101 4 3 2 1 ANT COMMON G3 G4 FL1101 881 5MHz IN 1 OUT 4 G1 2 G2 3 G3 5 L1108 DNI 100p C1107 L1107 DNI C1108 100p 100p C1106 15n L1140 L1102 1 2n L1101 100n C1101 18p R1107 4 7K 100p C1165 WTR_PRX_LB_2_IN RADIATION_PWR_ANT G850 EAM62732801 EAM62732901 G900 SWAP the RX Filter TP1 ...

Page 38: ... RX 1 TX 3 GND1 2 GND6 9 GND2 4 GND5 8 GND3 5 GND4 7 C1646 1p L1607 DNI TX_MODULE_TRX_2 TX_MODULE_TRX_4 WTR_PRX_LB_1_IN LNA_PRX_MB2_IN Shunt cap must be 33pF guarantee LNA gain setting time TP2 C1635 10u U1602 EAN62885901 SKY77742 21 17 15 13 16 14 10 5 6 4 12 7 3 8 11 1 9 2 RFIN GND3 VBATT GND4 CPLOUT VENHB GND2 VCC VENLB GND1 VMODE RFOUTLB RFOUTHB GND6 GND5 CPLIN PGND DNI C1643 C1649 DNI VPA_BAT...

Page 40: ...cs Inc All right reserved Only for training and service purposes LGE Internal Use Only Check Ant Logic Refer to 3 4 CheckTP1 Over 21 dBm CheckTP2 Over 21 dBm CheckTP3 Over 3dBm RFTx Level is OK Yes No CheckWTR2605 Check FL1601 Yes No Check PAM Yes No ...

Page 41: ...G Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only PAM control signal PA0_ON_0 C1647 PAM Enable Band Select PA0_ON_2 C1648 PAM Enable Band Select PA0_R_0 C1648 Gain Control Main Top TP2 TP1 TP3 ...

Page 42: ...1 B2 LPM H L H B5 B8 HPM L H L B5 B8 LPM L H H C1635 10u U1602 EAN62885901 SKY77742 21 17 15 13 16 14 10 5 6 4 12 7 3 8 11 1 9 2 RFIN GND3 VBATT GND4 CPLOUT VENHB GND2 VCC VENLB GND1 VMODE RFOUTLB RFOUTHB GND6 GND5 CPLIN PGND DNI C1643 C1649 DNI VPA_BATT0 C1642 100p 1n C1632 C1637 1n DNI C1648 C1636 10n C1641 100p DNI C1647 10n C1633 VPA0 C1634 10u PA0_R_0 WTR_PDET_IN WTR_TX3_OUT PA0_ON_0 PA0_ON_2...

Page 43: ...L 0 01 R1110 3 3M C1163 100p 100p C1164 VREG_L6_1V8 C1160 100p L1136 DNI DNI L1137 L1148 27n SW101 4 3 2 1 ANT COMMON G3 G4 FL1101 881 5MHz IN 1 OUT 4 G1 2 G2 3 G3 5 L1108 DNI 100p C1107 L1107 DNI C1108 100p 100p C1106 15n L1140 L1102 1 2n L1101 100n C1101 18p R1107 4 7K 100p C1165 WTR_PRX_LB_2_IN RADIATION_PWR_ANT G850 EAM62732801 EAM62732901 G900 SWAP the RX Filter TP1 TP1 Main Bot ...

Page 44: ... RX 1 TX 3 GND1 2 GND6 9 GND2 4 GND5 8 GND3 5 GND4 7 C1646 1p L1607 DNI TX_MODULE_TRX_2 TX_MODULE_TRX_4 WTR_PRX_LB_1_IN LNA_PRX_MB2_IN Shunt cap must be 33pF guarantee LNA gain setting time TP2 C1635 10u U1602 EAN62885901 SKY77742 21 17 15 13 16 14 10 5 6 4 12 7 3 8 11 1 9 2 RFIN GND3 VBATT GND4 CPLOUT VENHB GND2 VCC VENLB GND1 VMODE RFOUTLB RFOUTHB GND6 GND5 CPLIN PGND DNI C1643 C1649 DNI VPA_BAT...

Page 46: ...cs Inc All right reserved Only for training and service purposes LGE Internal Use Only Check Ant Logic Refer to 3 4 CheckTP1 Over 21 dBm CheckTP2 Over 21 dBm CheckTP3 Over 3dBm RFTx Level is OK Yes No CheckWTR2605 Check FL1602 Yes No Check PAM Yes No ...

Page 47: ...014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only PAM control signal PA0_ON_0 C1647 PAM Enable Band Select PA0_ON_2 C1648 Gain Control PA0_R_0 C1648 Gain Control Main Top TP2 TP1 TP3 ...

Page 48: ...1 B2 LPM H L H B5 B8 HPM L H L B5 B8 LPM L H H C1635 10u U1602 EAN62885901 SKY77742 21 17 15 13 16 14 10 5 6 4 12 7 3 8 11 1 9 2 RFIN GND3 VBATT GND4 CPLOUT VENHB GND2 VCC VENLB GND1 VMODE RFOUTLB RFOUTHB GND6 GND5 CPLIN PGND DNI C1643 C1649 DNI VPA_BATT0 C1642 100p 1n C1632 C1637 1n DNI C1648 C1636 10n C1641 100p DNI C1647 10n C1633 VPA0 C1634 10u PA0_R_0 WTR_PDET_IN WTR_TX3_OUT PA0_ON_0 PA0_ON_2...

Page 49: ...0 G1 ANT G2 R1108 10K R1109 750KTOL 0 01 R1110 3 3M C1163 100p 100p C1164 VREG_L6_1V8 C1160 100p L1136 DNI DNI L1137 L1148 27n SW101 4 3 2 1 ANT COMMON G3 G4 FL1101 881 5MHz IN 1 OUT 4 G1 2 G2 3 G3 5 L1108 DNI 100p C1107 L1107 DNI C1108 100p 100p C1106 15n L1140 L1102 1 2n L1101 100n C1101 18p R1107 4 7K 100p C1165 WTR_PRX_LB_2_IN RADIATION_PWR_ANT G850 EAM62732801 EAM62732901 G900 SWAP the RX Fil...

Page 50: ...rved Only for training and service purposes LGE Internal Use Only Main Top TP2 2 2n L1621 L1615 2 7n VPA0 DNI L1600 DNI C1607 C1613 10u EAM62711201 FL1600 ANT 6 RX 1 TX 3 GND1 2 GND6 9 GND2 4 GND5 8 GND3 5 GND4 7 L1616 1n C1675 DNI TX_MODULE_TRX_1 LNA_PRX_MB1_IN B1 B4 TP2 ...

Page 51: ...Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only START CheckTP1 Signal exist CheckTP2 Signal exist Check RF Switch M S Yes No CheckWTR2605 Check FL1600 Yes No ...

Page 52: ...108 10K R1109 750KTOL 0 01 R1110 3 3M C1163 100p 100p C1164 VREG_L6_1V8 C1160 100p L1136 DNI DNI L1137 L1148 27n SW101 4 3 2 1 ANT COMMON G3 G4 FL1101 881 5MHz IN 1 OUT 4 G1 2 G2 3 G3 5 L1108 DNI 100p C1107 L1107 DNI C1108 100p 100p C1106 15n L1140 L1102 1 2n L1101 100n C1101 18p R1107 4 7K 100p C1165 WTR_PRX_LB_2_IN RADIATION_PWR_ANT G850 EAM62732801 EAM62732901 G900 SWAP the RX Filter TP1 TP1 ...

Page 53: ...00p L1617 DNI 1p C1654 DNI L1608 27p C1650 L1618 1n FL1601 EAM62890101 7 5 8 4 9 2 3 1 6 ANT RX TX GND1 GND6 GND2 GND5 GND3 GND4 L1627 15n L1626 4 7n 6 8n L1620 L1619 2 7n EAM62711101 FL1602 ANT 6 RX 1 TX 3 GND1 2 GND6 9 GND2 4 GND5 8 GND3 5 GND4 7 C1646 1p L1607 DNI TX_MODULE_TRX_2 TX_MODULE_TRX_4 WTR_PRX_LB_1_IN LNA_PRX_MB2_IN Shunt cap must be 33pF guarantee LNA gain setting time TP2 ...

Page 54: ...Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only START CheckTP1 Signal exist CheckTP2 Signal exist Check RF Switch M S Yes No CheckWTR2605 Check FL1601 Yes No ...

Page 55: ...2 R1108 10K R1109 750KTOL 0 01 R1110 3 3M C1163 100p 100p C1164 VREG_L6_1V8 C1160 100p L1136 DNI DNI L1137 L1148 27n SW101 4 3 2 1 ANT COMMON G3 G4 FL1101 881 5MHz IN 1 OUT 4 G1 2 G2 3 G3 5 L1108 DNI 100p C1107 L1107 DNI C1108 100p 100p C1106 15n L1140 L1102 1 2n L1101 100n C1101 18p R1107 4 7K 100p C1165 WTR_PRX_LB_2_IN RADIATION_PWR_ANT G850 EAM62732801 EAM62732901 G900 SWAP the RX Filter TP1 ...

Page 56: ...00p L1617 DNI 1p C1654 DNI L1608 27p C1650 L1618 1n FL1601 EAM62890101 7 5 8 4 9 2 3 1 6 ANT RX TX GND1 GND6 GND2 GND5 GND3 GND4 L1627 15n L1626 4 7n 6 8n L1620 L1619 2 7n EAM62711101 FL1602 ANT 6 RX 1 TX 3 GND1 2 GND6 9 GND2 4 GND5 8 GND3 5 GND4 7 C1646 1p L1607 DNI TX_MODULE_TRX_2 TX_MODULE_TRX_4 WTR_PRX_LB_1_IN LNA_PRX_MB2_IN Shunt cap must be 33pF guarantee LNA gain setting time TP2 ...

Page 57: ...Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only START CheckTP1 Signal exist CheckTP2 Signal exist Check RF Switch M S Yes No CheckWTR2605 Check FL1602 Yes No ...

Page 58: ...ght 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 6 Checking GSM Block Check FEMID Block Refer to 3 4 Check XO Block Refer to 3 3 Check RFTRX Level START Re download Cal ...

Page 59: ...5 6 5 4 3 24 TRX1 GND3 VCC1 VCC2 GND4 GND17 GND1 GND11 GND14 GND13 GND12 GND9 GND8 GND6 RX1 GND2 ANT SPDT_IN SPDT_OUT RX2 GND5 GND10 GND7 GND15 GND16 NC1 VBATT GND20 TRX4 GND19 TRX3 GND18 TRX2 NC2 RF_IN SPDT SW0 SW1 HB_EN LB_EN MODE0 MODE1 PGND PA0_R_0 PA0_R_1 WTR_TX1_OUT SPDT_SEL ANT0_SW_SEL_0 ANT0_SW_SEL_1 ANT0_SW_SEL_2 ANT0_SW_SEL_3 TX_MODULE_TRX_2 TX_MODULE_TRX_1 TX_MODULE_TRX_4 for W7 CI 06 0...

Page 61: ...ly for training and service purposes LGE Internal Use Only CheckTP1 If GSM over 31 dBm If DCS PCS over 28 dBm CheckTP2 3 If GSM TP2 under 6 dBm If DCS PCS TP2 under 6 dBm GSMTx is OK Check the other part CheckTx Module Check XO Block Refer to 3 3 Yes Yes CheckWTR2605 Start No No ...

Page 62: ...10K R1109 750KTOL 0 01 R1110 3 3M C1163 100p 100p C1164 VREG_L6_1V8 C1160 100p L1136 DNI DNI L1137 L1148 27n SW101 4 3 2 1 ANT COMMON G3 G4 FL1101 881 5MHz IN 1 OUT 4 G1 2 G2 3 G3 5 L1108 DNI 100p C1107 L1107 DNI C1108 100p 100p C1106 15n L1140 L1102 1 2n L1101 100n C1101 18p R1107 4 7K 100p C1165 WTR_PRX_LB_2_IN RADIATION_PWR_ANT G850 EAM62732801 EAM62732901 G900 SWAP the RX Filter TP1 TP2 TP1 ...

Page 63: ...ing and service purposes LGE Internal Use Only Main Top TP4 TP2 TP3 C1152 DNI DNI L1105 L1138 2n L1106 DNI C1150 100p C1149 100p 2n L1139 FL1100 4 3 2 1 5 10 6 7 8 9 GSM1900_OUT GND6 GND5 GSM1800_OUT GND7 GND4 GSM1800 1900_IN GND1 GND2 GND3 WTR_PRX_MB_3_IN RX_G1800 RX_G1900 G1800 G1900 TP3 ...

Page 64: ...e Phone Rx is ON CheckTP1 Signal exist CheckTP2 3 4 Signal exist Check RF Switch M S Yes No CheckWTR2605 CheckTx Module Yes No DNI L1610 C1653 DNI C1652 100p 1p C1654 DNI L1608 27p C1650 L1627 15n L1626 4 7n 6 8n L1620 EAM62711101 FL1602 ANT 6 RX 1 TX 3 GND1 2 GND6 9 GND2 4 GND5 8 GND3 5 GND4 7 TX_MODULE_TRX_4 WTR_PRX_LB_1_IN Shunt cap must be 33pF guarantee LNA gain setting time TP4 ...

Page 65: ...C4162 TP5203 C4194 C4197 C4138 C8400 C2356 D6811 C8401 C4131 C2367 C7302 C2100 C7401 C4105 C2346 C9106 C7402 R4142 C4145 L1118 L1132 C4132 R4105 C9105 R7301 C9100 D9502 C7403 VA7102 C5222 C1143 C2380 C2309 R7201 C2379 R7300 C4122 C4157 C2382 C4182 R9503 C5223 FL9100 VA9100 BAT4130 C5215 C2386 ANT2500 R9107 L1126 FB6100 C8100 C5218 C1144 C1161 C9503 C4188 C2304 U4132 C8101 C4123 C4156 TP5200 L5201 ...

Page 66: ...2100 C7401 C4105 C2346 C9106 C7402 R4142 C4145 CN5100 L1118 L1132 C4132 R4105 C9105 R7301 C9100 D9502 C7403 ZD6611 VA7102 C5222 C1143 C2380 FB6612 C2309 R7201 C2379 R7300 C4122 C4157 C2382 C4182 R9503 C5223 FL9100 VA9100 BAT4130 C5215 C2386 ANT2500 R9107 L1126 FB6100 C8100 C5218 C1144 C1161 C9503 C1163 C4188 C2304 U4132 C8101 C4123 C4156 VA9504 TP5200 L5201 CN7200 R4110 C9506 C2369 R5125 R8401 R96...

Page 67: ...es LGE Internal Use Only START Check ANT1103 CheckTP1 R11002 is 1 8v L11014 is 2 7v CheckTP2 Signal exist Remove the foreign substance inANT1103 ANT 1103 Ant Contact U1 GPS LNA FL1105 SAW Filter U1500 WTR2605 U4100 PM8226 X4100 Crystal Yes No CheckWTR2605 Check U4100 Check X4100 Yes Yes No No 3 7 2 Checking GPS ...

Page 68: ... Use Only Schematic of GPS LNA Block Main Bot TP1 L1127 10n VREG_L14_2V75 DNI L1125 22n L1135 22n L1118 C1142 0 1u 6 3V C1141 100p 100p C1143 SFMG2BAD001 U1 4 5 3 6 2 7 1 8 GND4 VDD VCTRL RFIN GND3 GND1 RFOUT GND2 L1146 8 2n DNI L1130 FB1140 L1126 DNI C1161 100p L1147 2 2n GNSS_ELNA_EN WTR_GNSS_RF_IN_1 TP1 3 7 3 Photo Circuit ...

Page 69: ...ING 69 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Main Top TP2 U4100 X4100 100p C1508 C1513 DNI 51 TOL 0 01 R1504 WTR_XO_IN WTR0_XO_IN option TP2 ...

Page 70: ...ly for training and service purposes LGE Internal Use Only 3 8 WIFI BTTrouble Shooting 3 8 1 WIFI BT IC Component Reference Description CN5100 C Clip Connected to antenna FL5100 Saw Filter U5100 WCN3620 CN5100 Connected to antenna U5100 WCN3620 FL5100 Saw Filter Min Bot Min Top ...

Page 71: ...BLE SHOOTING 71 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 8 2 WIFI BT Signal PathTx Rx Min Bot Min Top WIFI BTSignal To opposite side ...

Page 72: ...or XO circuitinput voltage TP3 VREG_L24_1V3 Power for WCN analog digital and RF core circuits Power for WLAN driver amplifier circuits TP4 VREG_L16_3V3 Power for WLAN 2 4GHz PA circuits 3 8 3 WIFI BT Signal PathTx START Check ANT5100 CheckTP1 2 3 4 TP1 C5100 is 1 8v TP2 C5101 is 1 8v TP3 C5224 is 1 3v TP4 R5105 is 3 3v Remove the foreign substance inANT1103 ANT5100 Ant Contact U5100 WCN3620 U4100 ...

Page 73: ...3 TROUBLE SHOOTING 73 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Main Bot Main Top TP1 TP3 CN5100 TP4 TP2 U5100 ...

Page 74: ...3 VDD_FM_PLL_1P3 VDD_FM_VCO_1P3 VDD_BT_BB_1P3 VDD_BT_PLL_1P3 VDD_BT_VCO_1P3 VDD_BT_FM_DIG_1P3 VDD_WL_BB_1P3 VDD_WL_2GPA_1P3 VDD_WL_PLL_1P3 VDD_WL_UPC_1P3 VDD_WL_2GLNA_1P3 VDD_WL_2GPA_3P3 VDD_BT_RF_1P3 VDD_WL_LO_1P3 VDD_BT_DA_3P3 10u C5112 FB5100 240 100p C5113 470n 6 3V C5101 6 3V 470n C5100 C5114 100p C5102 4 7u 0 R5105 10n C5107 10V 6 3V C5105 22n 10V 10n C5108 10n 10V C5109 C5111 10V 10n VREG_L...

Page 75: ...ooting Change Rear Cover Ass y Rework lower FPCB TP1 L100 TP2 L101 Replace component U6100 Replace component U2100 or main board Fail onTP1 replace U6100 Fail onTP2 replace R6107 Speaker Sound can hear Change Lower FPCB Speaker works well Check Main Board TP1 BUCK_VSW TP2 VDD_SPKDRV After power on Headphone icon display on Upper right LCD Abnormal FPCB inspection TP1 toTP2 TP2 toTP4 Short test Is ...

Page 76: ...reserved Only for training and service purposes LGE Internal Use Only TP1 L100 TP3 L101 TP2 TP1 C103 4 7n C104 4 7n L100 82n L101 82n 2 EAB62653001 CN102 BUJEON BRS 181030P08 P 2 1 SPK_P SPK_N size change 1005 1608 Rev C 06 03 Rev 1 0 SPEAKER TP1 L100 TP3 L101 TP2 TP1 ...

Page 77: ...EF LINE_OUT1 LINE_OUT2 GND4 HPH_L HPH_R VDD_BUCK BUCK_VSW BUCK_VOUT1 BUCK_VOUT2 GND_BUCK NCP_VNEG NCP_C1P NCP_C1M SPKR_DRVP SPKR_DRVM VDD_SPKDRV GND_SPKDRV_1 GND_SPKDRV_2 C6109 4 7u 10V 0 2 C6105 4 7u FB6100 1000 VREG_S4_2P1 R6107 0 VPWR_BOOST_BYPASS 1u C6107 VPWR 1u C6108 R6108 DNI LINE_OUT_IRRC HPH_REF HPH_L HPH_R SPK_P SPK_N 1105 RevC 131111 FM 06 27 10V 6 3V Note 1 06 06 Note 2 06 06 LINE_OUT2...

Page 78: ...r troubleshooting Receiver path as below MSM8226 WCD9302 EAROP EAROM Receiver Refer to 3 8 3 Main MIC troubleshooting Replace component U6100 After Change Receiver Works well TP1 toTP2 TP3 toTP4 Short test Is it OK Rework component TP1 L6810 TP3 L6811 Works well RunVoice Recording application Main Mic Works well No No No No Yes Yes Yes Yes START End ...

Page 79: ...Inc All right reserved Only for training and service purposes LGE Internal Use Only Main Bot TP3 L6811 TP1 L6810 TP2 TP4 D6810 D6811 EAB62888201 EM TECH CN6810 2 1 82n L6810 C6810 33p L6811 82n 33p C6812 33p C6811 RCV_P RCV_N TP3 L6811 TP1 L6810 TP2 TP4 ...

Page 80: ... path as below MSM8226 WCD9302 MIC1_INP MIC1_INM Mic Refer to 3 9 5 Ear MIC troubleshooting Replace component MIC100on Lower FPCB Replace component U6100 Change Main Board After Change Lower FPCB Works well Check Mic Power in Main Board TP1 MIC_BIAS_1 Check Mic signal in Lower FPCB TP2 MIC_IN1_P Headphone icon display on Upper right LCD No No No No Yes Yes Yes Yes START End ...

Page 81: ...poses LGE Internal Use Only TP1 C100 TP2 FB100 VA101 VA100 FB100 1800 C100 0 1u 6 3V 33p 50V C101 R100 0 EAB62830801 MIC100 GOERTEK 6 5 4 3 2 1 OUT G1 G2 G3 PWR G4 MIC_BIAS_1 MIC_IN1_N MIC_IN1_P add size change 0603 1005 06 24 size change 0603 1005 06 24 0529 P N change 01 02 06 24 Main_MIC TP1 C100 TP2 FB100 ...

Page 82: ...9 4 SUB MIC troubleshooting Sub Mic path as below MSM8226 WCD9302 MIC1_INP MIC1_INM Mic Refer to 3 9 5 Ear MIC troubleshooting Replace component MIC6920 Replace component U6100 Check Mic Power in Main Board TP1 MIC_BIAS_1 Check Mic signal in Main Board TP2 MIC3_IN_P Headphone icon display on Upper right LCD No No No Yes Yes Yes START End ...

Page 83: ...oses LGE Internal Use Only Main Top TP2 FB6920 TP1 C6920 ZD6920 1800 FB6920 R6920 0 D6921 D6920 MIC6920 GOERTEK EAB62830801 6 5 4 3 2 1 OUT G1 G2 G3 PWR G4 C6920 0 1u 33p C6921 MIC_BIAS_1 MIC_IN3_P MIC_IN3_N Rev1 0 GND Close to MIC for CI DCR 1 9ohm value 1800 06 13 0603 5 5V 35V 33pF 0620 TP2 FB6920 TP1 C6920 ...

Page 84: ...low MSM8226 WCD9302 HPH_L HPH_R Headset Replace component U6420 Replace component U6100 Replace component U6100 Replace component U2100 Replace Headset Jack J6610 Check Main Board TP1 EAR_SENSE_JACK When headset inserted change High Low Check Main Board TP2 HPH_L TP3 HPH_R TP4 HPH_ REF Check Main Board TP5 NCP_VNEG TP6 NPC_C1P Headphone icon display on Upper right LCD No No No No No Yes Yes Yes Ye...

Page 85: ...611 FM_ANT HPH_REF EAR_SENSE_JACK HPH_L EAR_MIC_JACK HPH_R Rev1 0 Rev1 0 RevB DGMS RevB TDMA issue DGMS checklist To improve FM Antenna performance using 3pole Ear jack 06 18 Place these components close to the headset jack connector to the headset jack connector Place these components close 06 03 06 18 0603 3 3V 7 5V 6pF TP3 FB6612 TP4 L6610 TP2 FB6611 R6105 20K 0 01 WCD9302 U6100 34 37 22 CCOMP ...

Page 86: ...100 Replace component R6616 C6614 Replace component U6100 Replace Headset Jack J6610 Check Main Board TP1 R6616 When headset inserted change High Low Check Main Board TP2 MIC_IN2_N is GND level Headphone icon display on Upper right LCD No No No No Yes Yes Yes Yes START End R6105 20K 0 01 WCD9302 U6100 34 37 22 CCOMP MBHC_HSDET LDO_HI_CAP 1u 10V 0 1 C6103 C6106 0 1u EAR_SENSE_JACK Pin 18 GND should...

Page 87: ...C GND C6612 DNI R6424 330K 1800 FB6611 ZD6610 1800 FB6612 R6611 4 7K 1800 FB6610 R6615 0 ZD6611 1 2K TOL 0 01 R6613 TOL 0 01 1K R6612 C6420 1u 0 R6616 FM_ANT VPWR HPH_REF MIC_BIAS_2 EAR_SENSE_JACK MIC_IN2_N HPH_L EAR_MIC_JACK HPH_R Rev1 0 Rev1 0 RevB DGMS RevB TDMA issue DGMS checklist To improve FM Antenna performance using 3pole Ear jack 06 18 Place these components close to the headset jack con...

Page 88: ...Internal Use Only 3 10 Camera 3 10 1 8M CameraTrouble Shooting 8M camera control signals are generated by MSM8226 Camera is OK Disconnect and reconnect camera connector CN7300 Yes Yes Yes Yes Start TP1 1 2V TP2 2 8V TP3 1 8V TP4 2 8V TP5 24MHz No No No No Camera is OK Change the Camera Module END Change the Main board ...

Page 89: ...P2 TP1 TP5 TP4 TP3 CN7300 R7300 0 C7305 DNI 1u C7300 CAM_VCM_2V8 CAM_AVDD_2V8 MAIN_CAM_DVDD 1u C7301 1u C7302 1u C7303 CN7300 13 12 14 11 15 10 16 9 17 8 18 7 19 6 20 5 21 4 22 3 23 2 24 1 C7304 DNI CAM_IOVDD_1V8 D7301 D7302 CAM0_I2C_SCL CAM0_I2C_SDA MAIN_CAM0_MCLK RevB for GPS tuning 0603 5 5V 35V 15pF 06 03 for W X commonize TP2 TP1 TP5 TP4 TP3 ...

Page 90: ...poses LGE Internal Use Only 3 10 2 VGA CameraTrouble Shooting VGA camera control signals are generated by MSM8226 Camera is OK Disconnect and reconnect camera connector CN7400 Yes Yes Yes Yes Start TP1 2 8V TP2 1 2V TP3 1 8V TP4 24MHz No No No No Camera is OK Change the Camera Module END Change the Main board ...

Page 91: ...FL7400 10 9 8 4 7 3 6 2 5 1 P1 P5 P2 P6 P3 P7 P4 P8 G1 G2 VT_CAM_MIPI_DATA0_N VT_CAM_MIPI_CLK_P VT_CAM_MIPI_CLK_N VT_CAM_MIPI_DATA0_P VT_CAM_MCLK VT_MAKER_ID RevC Sunny low Cowell high size change 06 03 TP4 D7402 D7401 CAM_AVDD_2V8 CAM_IOVDD_1V8 6 3V C7402 2 2u VA7403 VA7404 C7401 2 2u CN7400 11 10 12 9 13 8 14 7 15 6 16 5 17 4 18 3 19 2 20 1 FRONT_CAM_DVDD 6 3V 1u C7400 CAM0_I2C_SCL CAM0_I2C_SDA ...

Page 93: ... Replace component U9301 Disconnect and re connect LCD Connector in Lower FPCB CN7100 Replace component U4100 Replace LCD Module ReworkTP6 TP7 TP8 LCD back light is ON TP6 TP7 TP8 Filter Solder status is normal Check LCD Power in Main Board TP1 DDVDL_ 5 5V TP2 DDVDH_ 5 5V Check LCD circuitswithout LCD moduleTP3 VREG_L15_2V8 TP4 VREG_L8_1V8 TP5 PMIC_LED_A LCD display OK No No No No No Yes Yes Yes Y...

Page 94: ... Top TP2 C9303 TP1 C9308 U9301 TPS65132 EAN62731801 D2 D3 D1 E2 E3 E1 C2 C1 C3 B3 B2 B1 A3 A2 A1 ENN OUT_N CFLY2 ENP SCL PGND1 CFLY1 VIN SDA PGND2 OUT_P REG2 SW REG1 AGND 16V C9303 4 7u L9302 4 7u DDVDL_ 5 5V DDVDH_ 5 5V VPWR C9304 4 7u 16V C9308 16V 4 7u C9302 10V 4 7u 16V 2 2u C9307 COMMON_I2C_SCL COMMON_I2C_SDA DSV_EN TP2 C9303 TP1 C9308 ...

Page 95: ...L8_1V8 VREG_L15_2V8 FL7101 5 6 3 1 4 2 P2 P4 P1 P3 P6 P5 FL7103 5 6 3 1 4 2 P2 P4 P1 P3 P6 P5 DDVDH_ 5 5V DDVDL_ 5 5V EAG63232601 CN7100 13 12 14 11 15 10 16 9 17 8 18 7 19 6 20 5 21 4 22 3 23 2 24 1 G1 G2 G3 G4 6 3V 1u C7100 VA7100 VA7101 0 1u 6 3V C7103 LCD_MIPI_CLK_P LCD_MIPI_DATA0_P LCD_MIPI_DATA0_N LCD_MIPI_DATA1_N LCD_MIPI_DATA1_P LCD_MIPI_CLK_N PMIC_LED_C PMIC_LED_A LCD_MAKER_ID LCD_VSYNC L...

Page 96: ... Touch IC located on Main PCB Touch control signals are generated by MSM8226 If device s other function is normal then replace U4100 Press PWR key to power on Replace U7200 AnotherTouch Panel connect Touch works Check touch IC power on main board TP2 VREG_L28_2V95 TP1 VREG_L6_1V8 TP3 TP4 is 1 8V And can you see when touch to window TP4 signal change high to low Can you see I2C wave form TP5 TP6 To...

Page 97: ...17 X16 X15 X14 X13 X12 EXTCAP XVDD AVDD2 X23 Y13 GND1 Y12 VDD1 Y11 RESET Y10 NC Y9 SDA Y8 SCL Y7 SYNC Y6 NOISE_IN Y5 VDD2 Y4 DBG_CLK Y3 DBG_DATA Y2 ADDSEL Y1 CHG Y0 GND2 X0 X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 AVDD1 22n C7200 1u C7203 TP7202 TP7203 TOUCH_I2C_SCL TOUCH_I2C_SDA RX9 TX18 TX17 TX16 RX1 TX2 TX13 TX14 TX15 RX10 RX5 RX4 RX3 RX2 RX8 TX8 TX6 TX4 TX12 TX10 RX0 RX7 TX21 TX1 TX0 TX19 TX20 TX3 T...

Page 98: ... TROUBLE SHOOTING 98 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Main Top TP1 C7201 TP2 C7202 TP3 R7200 TP4 R7202 TP6 R2206 TP5 R2205 ...

Page 99: ...tor signal s path is PM8226 VB100 DC Motor controlled by PM8226 PMIC_VIB_N voltage level Motor vibrate well Disconnect and re connect Lower FPCB Connector CN9400 Yes Yes Yes Yes Start Change Motor Vibrate is normal Rework component TP1 L105 TP3 L106 Works well Check Lower FPCB TP1 to TP2 TP3 toTP4 Short test Is it OK No No No No Replace Lower FPCB End Replace Lower FPCB ...

Page 100: ...d Only for training and service purposes LGE Internal Use Only VA103 L105 100n C108 DNI C112 33p 50V 50V 33p C111 L106 100n 1u C107 VPWR WHVM 1030FS VB100 EAU61805901 WOOSUNG PMIC_VIB_N 07 04 Add Main Lower 06 24 size change 0603 1005 P N change 01 02 Add 06 30 MOTOR TP1 TP3 ...

Page 101: ... 3 14 Gyro AccelTrouble Shooting Accel Compass Sensor signal path is MSM8226 BMC150 It communicate via SENSOR0_I2C Replace component U4100 Replace component U8100 Replace component U2100 Check main board TP1 R2201 TP2 R2202 It s signal level high Check main board TP3 C8101 2 85V Proximity sensor works well No No No Yes Yes Yes START End ...

Page 102: ...MC150 EAN62637201 U8100 2 5 14 1 13 10 11 6 3 9 8 12 4 7 GND2 DRDY CSB VDD GND3 INT2 GND1 SCK VDDIO PS SDO SDI INT3 INT1 6 3V 0 1u C8101 C8100 0 1u 6 3V TP8100 TP8101 VREG_L19_2V85 VREG_LVS1_1V8 SENSOR0_I2C_SCL SENSOR0_I2C_SDA BMC150_INT_1 COMPASS_INT geomagnetic b 0001_011x accelerometer b 0001_001x VREG_LVS1_1V8 R2201 3 3K 3 3K R2202 SENSOR0_I2C_SCL SENSOR0_I2C_SDA TP1 R2201 TP2 R2202 ...

Page 103: ... Change the Compass Sensor IC U8100 Change the main board Compass Sensor Function is OK Compass Sensor function is OK No No No START Compass Sensor IC U8100 BMC150 EAN62637201 U8100 2 5 14 1 13 10 11 6 3 9 8 12 4 7 GND2 DRDY CSB VDD GND3 INT2 GND1 SCK VDDIO PS SDO SDI INT3 INT1 6 3V 0 1u C8101 C8100 0 1u 6 3V TP8100 TP8101 VREG_L19_2V85 VREG_LVS1_1V8 SENSOR0_I2C_SCL SENSOR0_I2C_SDA BMC150_INT_1 CO...

Page 105: ...imity Sensor troubleshooting Proximity Sensor is worked as below Send Key click Phone number click Call connected Object moved at the sensor Control the screen s on off operation automatically END END Send Key click Phone number click Call connected Object moved at the Proximity sensor Change the main board LCD off Function is OK No Yes Yes START ...

Page 106: ...nternal Use Only Main Top U8400 APDS 9130 200 9 3 5 4 6 7 2 8 1 SDA VDD INT SCL GND LEDK LEDA LDR NC 1u 6 3V C8400 22 R8401 ZD8400 DNI ZD8401 DNI VREG_L19_2V85 VREG_LVS1_1V8 0 05 4 7K R8400 1u 6 3V C8401 SENSOR0_I2C_SCL SENSOR0_I2C_SDA PROXIMITY_INT RevB DGMS RevB DGMS APDS 9130 b 0111001x Proximitysensor Proximitysensor ...

Page 107: ...ers up normally when MSM8226 is properly powered therefore PM8226 is the actual one to take look at Power ON sequence of LGD405 is PWR key press BAT_FET_N goes low GPIO8 High VREG_S3 High VREG_L6 High VREG_L12 High BB_CLK PON_RESET_N goes high PS_HOLD High 100 R9607 ZD9700 SW9711 S1 3 4 5 6 S2 PM_KYPD_PWR_N TP1 R9607 C4136 47u 6 3V 22u C4139 C4137 DNI VREG_S4_2P1 VREG_S3_1P35 VREG_S2_1P15 VREG_S1_...

Page 108: ..._CLK1 RF_CLK2 BB_CLK1 BB_CLK2 SLEEP_CLK1 VREF_BAT_THM VREF_LPDDR REF_BYP GND_REF 0 R4108 VREF_LPDDR2 VREF_BAT_THERM DNI C4102 C4101 DNI C4100 1n 0 1u C4106 R4107 0 R4104 10K DNI C4196 TP4103 R4112 0 R4110 0 VREG_L12_1V8 0 R4114 X4100 1RAA19200AAA 19 2MHz 2 1 3 4 SENSOR XTAL2 XTAL1 GND1 WTR0_XO_IN NFC_CLK_OUT XO_G_TCXO BB_CLK SLEEP_CLK BB_CLK_EN MSM_PS_HOLD JTAG_PS_HOLD PM_KYPD_PWR_N PMIC_SPMI_DATA...

Page 109: ... PWR KeyTP1 R9607 Come high to low Battery voltage higher than 3 3V Check Main ClockTP2 X4100 19 2MHz Check BBCLKTP3 R4110 Check PM8226 sVREG_S1 is high 0 7V TP4 C4139 PON_RESET_N high TP5 TP4103 PS_HOLD TP6 R4104 Check Power Key SW9711 Change or charging the Battery Check X4100 Check U4100 PM8226 Check U4100 PM8226 Check U4100 PM8226 Check U4100 PM8226 No No No No No No No Yes Yes Yes Yes Yes Yes...

Page 110: ...LE SHOOTING 110 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Main Top TP5 TP4103 TP1 R9607 TP2 X4100 TP4 C4139 Main Bot TP6 R4104 TP3 R4110 ...

Page 111: ...1626 C2398 TP6106 C1643 L1610 LD8950 C1666 R6615 C1649 C6612 C1637 C2103 C1150 C5104 FL5100 C6122 U1600 SC3211 R6923 R2103 L1615 L1625 L1601 L1105 TP2200 C2350 TP7203 FL1601 C6920 C7202 C6107 C1642 C6104 SW9710 R1500 L2101 C6105 C1109 R6103 R6920 C5124 FL1101 U U1500 U2100 C1614 C2107 L1607 L1605 C C5108 L1107 C2315 C5102 FL1602 C6100 R7200 C1664 C2106 C1636 L2102 R6104 C5113 C7200 C5111 FB6920 C1...

Page 112: ...8 TP6106 C1643 L1610 LD8950 C1666 R6615 C1649 C6612 C1637 C2103 C1150 C5104 FL5100 C6122 U1600 SC3211 R6923 R2103 L1615 L1625 L1601 L1105 TP2200 C2350 TP7203 FL1601 C6920 C1672 C7202 C6107 C1642 C6104 SW9710 R1500 L2101 C6105 C1109 R6103 R6920 C1508 C1505 C5124 FL1101 U U1500 U2100 C1614 C1513 C2107 C1610 L1607 L1605 C1201 C5108 C1502 L1107 C2315 C5102 FL1602 C6100 R7200 C1664 C2106 C1636 L2102 R6...

Page 113: ... LGE Internal Use Only J6610 Earjack U5100 WCN3620 U4100 PM8226 START Check U5100 WCN3620 Replace Earjack The problem may be refer to PMIC block Check U4100 PM8226 Check RF Line L5101 L5100 C6610 L6610 D6610 TP1 C5105 is 1 3V Check the Connection Between PCB Earjack TP2 FM RX Signal exist L5101 No No No Yes Yes Yes ...

Page 114: ...00 C1614 C1513 C2107 C1610 L1607 L1605 C1201 C5108 C1502 L1107 C2315 C5102 FL1602 C6100 R7200 C1664 C2106 C1636 L2102 R6104 C5113 C7200 C5111 FB6920 C1607 C1617 C1676 PT1600 C1203 L1619 C1647 C1627 C2310 L1140 C1650 R1502 C6610 U1100 C2385 C1671 C6108 C1503 C1613 C7201 C1645 U1201 C2102 C1654 L1139 L6610 C2317 R5104 R2206 L1128 R2203 C1618 C1648 R6616 C5118 D6921 C6109 D8950 C5116 C1633 C1200 C510...

Page 115: ...0 61WLNSP 4 36 3 34 11 27 32 21 20 25 35 42 17 1 10 19 2 12 14 39 45 44 9 43 58 37 60 23 7 16 13 51 52 57 56 29 24 22 VDD_IO_1P8 VDD_XO_1P8 VDD_DIG_1P2 VDD_FM_RXFE_1P3 VDD_FM_RXBB_1P3 VDD_FM_PLL_1P3 VDD_FM_VCO_1P3 VDD_BT_BB_1P3 VDD_BT_PLL_1P3 VDD_BT_VCO_1P3 VDD_BT_FM_DIG_1P3 VDD_WL_BB_1P3 VDD_WL_2GPA_1P3 VDD_WL_PLL_1P3 VDD_WL_UPC_1P3 VDD_WL_2GLNA_1P3 GND2 GND3 GND4 GND5 GND6 GND7 GND8 GND9 GND10 G...

Page 116: ..._DATA is triggered USB work USB Trouble shooting is shown below Battery voltage higher than 3 2V Change or charging the Battery Yes Yes Yes Yes Yes Change the Main PCB Start VBUS_USB_IN voltage 4 7V 5V TP1 C9402 ChangeTA or uUSB cable or Lower FPCB Insert USB Cable No No No No No Check 5V0_VREG_BHARGER is high TP2 C4142 Check U4100 PM8226 Check U4100 PM8226 Check Lower FPCB CheckVREG_L10_1V8 TP3 C...

Page 117: ...E Internal Use Only LS MTRON CN9400 ENBY0040701 16 15 17 14 18 13 19 12 20 11 21 10 22 9 23 8 24 7 25 6 26 5 27 4 28 3 29 2 30 1 D9401 50V 1u C9402 R9401 47K D9400 VBUS_USB_IN USB_D_M USB_D_P PM_USB_ID SPK_P SPK_N 0603 5 5V 35V 33pF 0618 C4142 4 7u 10V 4 7u 10V C4143 VPWR 5V0_VREG_BHARGER CHG_PGND TP1 C9402 TP2 C4142 ...

Page 118: ...0V C105 VBUS_USB_IN PM_USB_ID USB_D_M USB_D_P Part change Rev G size change 0603 1006 06 24 for CI optimization 06 24 for Low voltage Surge clamping 12V 600W 8 20 ìs waveform Max 27V 22 5A PM_USB_ID direct connection to USB connector to detect ID when MSM PHY is off VREG_S1_1P15 VREG_S1_1P15 VREG_L20_3V075 VREG_L7_1V9 VREG_L10_1V8 VREG_LVS1_1V8 0 1u C2358 0 1u C2359 C2362 0 1u VREF_MSM_PX_MPP_1 0 ...

Page 119: ...3 TROUBLE SHOOTING 119 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Main Top TP5 FL101 TP2 C4142 TP3 C2359 TP4 C2360 TP1 C9402 ...

Page 120: ... Only for training and service purposes LGE Internal Use Only 4 DOWNLOAD Thisdocumentisdraftversion sothecontentswillbeupdatedafterregisteringthefinalone TOOL INFORMATION TOOLVERSION DLL NAME USB DRIVER Please Check theVersion to B2B H W Name Part No Software D L Cable ...

Page 132: ...4 DOWNLOAD 132 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGD405 LGD405 LGD405AT 00 V10a SSV XXX JUN 03 2013 0 tot LGD405 ...

Page 133: ...4 DOWNLOAD 133 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGD405 LGD405 LGD405AT 00 V10a SSV XXX JUN 03 2013 0 tot LGD405 LGD405 ...

Page 137: ...uch CoB I2C Rx 20 Tx 12 USIM2 PRX_IQ TX1_OUT TX2_OUT TX3_OUT PRX LB1 QFE1101 0 QRVKQP Flash LED Rx Tx circuits WTR2605 4 7 qHD 960X540 MIPI_DSI 2lane FLASH_STROBE TX GTR THRESH LCD Backlight GNSS_IQ PRX_LB1 PRX_LB2 PRX_MB1 PRX_MB2 PRX_MB3 GNSS_RF_IN GNSS R i it VBAT Ǹ RESET SPMI PS_HOLD Diversity Rx circuits PM8226 PMIC TX_GTR_THRESH BB_CLK1 WFR2600 Rx diversity SSBI DRX_IQ DRX_LB2 DRX_MB1 DRX MB2...

Page 138: ...4 A A 0 DNI i G GaGymGt 4 A A 0 06 055 4 9 4 4 A A 0 5 9 4 A A 0 DNI ZVTCEVQT 055A 0 A 0 055A 0 A176 0 5 9 4 4 4 A 0 64 WCN 5 9 055A4 A 0 4 A 4 A 6 A 5 4 A A 0 6 A176 4 A A 0 24ZA A 5 9 24ZA A Option G850 G900 964 5 4 A A 0 4 A A 0 64 5 6 4 A A 0 2 6 A176 5KPING 2 WCDMA B1 WRNGZGT 9 64 64 WRNGZGT 9 6 2 6 A176 WCN 2 WCDMA B2 B8 B5 WRNGZGT 9 52 6A176 9 52 6A 0 9dB Atten 2 2 6A 0 ...

Page 139: ... A A32 9 30 9 0A A 2 9 0A A 9 0A A32 5 6 9 06 9 A A30 9 A A 9 A A5 6 9 A A 6 9 0A A3 9 A 9 A5 6 9 6 6 9 06 9 A 6A4 1 6 4 A A 9 A A 6 9 A A 6 6A 6 6 55 A 9 A 6 9 A 6 6A 6 6 55 6A55 6A 6 A55 A 6 6A55 6A 6 A55 A 6 2 8 A 2 8 2 84 A A 2 84 2 A 5A4 8 A 2 8 A 1A 2 8 A 1A 2 6 1A 0 84 A A 2 84 A A 2 84 A A 2 4 A UWRRQTVU 9K K D I P 9K K KTGEV NWGVQQVJ 0 CPF 4Z LGD405 BT WIFI FM ...

Page 140: ...DD_XO VDD_BT_WL_FM VDD_3V3 VDD_DDR_Core_1V8 VREG_L20_3V075 VREG_L7_1V9 VDD_A2 WCD9302 CODEC VREG_L24_1V3 VREG_L16_3V3 VBAT VREG_L4_1V2 VREG_L6_1V8 VDD_DIG VDD_TX_RX VPWR VREG_L6 VREG_L7 VREG_L8 VREG_L4 VREG L20 _ VREG_L24 VREG_L16 VREG_L4 VREG_L21_2V75 VDD_P2 VDD_P5 VREG_L22_2V95 VDD_P6 VREG_L23_2V95 VDD_USB_3P3 eMMC Memory PN547 NFC APDS 9130 Proximity BU25061 Hall IC VREG LVS1 1V8 VREG_L19_2V85 ...

Page 141: ...F_CA VREF_CA LPDDR2 8Gbit PoP VREF_DQ EBI0_VREF_D0 3 EBI0_VREF_ZQ0 1 8Gbit PoP SDC1 DATA 0 7 DATA0 7 EMMC_DATA_0 7 MSM8226 1 2GHz Quad Cortex A7 SDC1_DATA_0 7 SDC1_CLK SDC1_CMD RESOUT_N eMMC v4 5 8GB DATA0 7 CLK CMD RST_N eMMC_CLK eMMC_CMD MSM_RESOUT_N SDC2_D_0 3 SDCARD_DATA_0 3 SDC2_CLK SDC2_CMD Micro SD socket GPIO_37 SDCARD_CLK SDCARD_CMD SDCARD_DET LGD405 Memory Interface ...

Page 142: ... 1 PM8226 LCD 4 7 qHD PMIC_LED_A PMIC_LED_C Cortex A7 LCD_MAKER_ID LCD RESET N WLED_1 GPIO_23 GPIO_6 4 7 qHD CABC_WLED LCD_RESET_N LCD_VSYNC LCD_MIPI_DATA1_P N LCD_MIPI_DATA0_P N GPIO_25 GPIO_24 MIPI_DSI0_LN1_P N MIPI DSI0 LN0 P N _ _ _ LCD_LCD_MIPI_CLK_P N MIPI_DSI0_LN0_P N MIPI_DSI0_CLK_P N TX0 21 RX0 RX12 TX0 21 RX0 RX12 RESET SDA GPIO_60 GPIO 18 TOUCH_MAKER_ID RX0 RX12 SDA SCL CHG GPIO_18 GPIO...

Page 143: ...CAM0_I2C_SCL MSM8226 1 2GHz Quad GPIO_30 PM8226 VREG_L5 MAIN_CAM_DVDD GPIO_114 MAIN_CAM0_RESET_N LDO Cortex A7 GPIO_62 GPIO_113 CAM_AVDD_2V8 CAM_IOVDD_1V8 CAM VCM 2V8 LDO 1 LDO 3 LDO LDO1_EN LDO3_EN LDO FRONT_CAM_DVDD GPIO_36 CAM_VCM_2V8 LDO 4 MAIN_CAM0_VCM_PWDN 2 VT Camera MIPI_CSI1_LN0_P N MIPI CSI1 CLK P N VT_CAM_MIPI_DATA0_P N VT CAM MIPI CLK P N CAM_AVDD_2V8 CAM_IOVDD_1V8 VT Camera VGA MIPI_C...

Page 144: ...T BMC150_INT_1 COMPASS_INT GPIO_69 GPIO 66 VREG_L6_1V8 VREG_LVS1_1V8 PS SDO VDD Compass DRDY SCK SDI SENSOR0_I2C_SCL SENSOR0_I2C_SDA GPIO_66 GPIO_7 GPIO_6 VREG_L19_2V85 VDD CSB VDDIO MSM8226 GPIO_115 Proximity INT SCL SDA PROXIMITY_INT VDD LEDA 1 2GHz Quad Cortex A7 IRRC D IRRC TXD VREG_LVS1_1V8 VCC B Y C D_IRRC_TXD GPIO_33 LINE_OUT_IRRC WCD9302 LINE_OUT1 GPIO_28 LGD405 Sensor Interface ...

Page 145: ...US_CLK SLIMBUS_DATA SLIMBUS_CLK SLIMBUS_DATA MIC1_INM MIC3_INP MIC3_INM MIC_IN3_P MIC_IN3_N MIC_BIAS1 MIC_BIAS_1 GPIO_70 GPIO_71 PM8226 MCLK PMIC_AUDIO_REF_CLK GPIO_1 VDD_IO VREG_L6_1V8 VDD_VBAT VDD DIG VPWR VREG_L4_1V2 HPH_REF SPK_DRVP SPK DRVM _ PM8226 VREG_L6 VSW_CHG VREG L4 SPK_P SPK N MBHC_HSDET EAR_SENSE_JACK VDD_DIG VDD_TX_RX VREG_L6_1V8 VDD_BUCK SPK_DRVM VDD_SPKDRV VREG_S4_2P1 VREG_L4 VREG...

Page 146: ...7 BGA PIN MAP 162 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only U1500 WTR2605 7 BGA PIN MAP U1500 WTR2605 Not Used ...

Page 151: ...7 BGA PIN MAP 167 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only U6100 CODEC IC WCD9302 U6100 CODEC IC WCD9302 Not Used ...

Page 152: ...7 BGA PIN MAP 168 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Converter LM3263 U1201 DCDC Converter LM3263 Not Used ...

Page 153: ...7401 C1642 C6104 SW9710 R1500 L2101 C6105 C1109 R9609 R6103 R6920 C1508 C3204 C1505 C5124 FL1101 U3100 L4132 C4163 C8952 C2312 C3206 U1500 U2100 C1614 R2302 C4161 R3203 C1513 C2107 C1610 L1607 L1605 C1201 C5108 U3200 C8951 C1502 L1107 C2315 C5102 R8952 FL1602 C6100 C4149 R4130 C4186 R7200 C1664 R3900 C2106 C1636 C4130 L2102 R6104 C5113 C7200 C4154 C4172 R7202 C5111 FB6920 C1607 C1617 C4164 C1676 P...

Page 154: ...43 C2380 FB6612 C2309 R7201 C2379 D9401 R7300 C4122 C4157 C2382 C4182 R9503 C5223 FL9100 VA9100 BAT4130 C5215 C2386 ANT2500 R9107 L1126 FB6100 C8100 C5218 C1144 C1161 C9503 C1163 C4188 C2304 U4132 C8101 C4123 C4156 VA9504 TP5200 L5201 CN7200 R4110 C9506 C2369 R5125 R8401 R9602 C5211 C9504 R9106 C2373 L1148 R1109 R4132 VA9513 R2201 L5200 C5123 SW101 C1112 R2104 C5214 R8950 VA9503 C7104 L1127 C2345 ...

Page 156: ...urposes LGE Internal Use Only 8 PCB LAYOUT C100 C103 C104 C105 C106 C107 C108 C111 C112 D101 D102 D103 D104 FL100 FL101 L100 L101 L105 L106 R101 VA101 VA103 C110 R102 ANT101 ANT100 CN101 CLOSE2 CLOSE1 C102 L102 CN102 VB100 VA100 SW100 R100 FB100 C101 CN103 LG D405_EAX65671801_F_LOWE_1 0_BOT ...

Page 157: ...tentswillbeupdatedafterregisteringthefinalone CAL INFORMATION S WVERSION Please Check theVersion to B2B H W Name Part No PIF PIF200 AllType BJAY0024021 USB Cable USB Cable RAD32247898 Power Cable DC Power Cable RAD32247878 I O Cable RF Cable_Main Power Supply_PIF Power Supply 5 3V Power Supply_Phone Power Supply 5 0V RFTest Equipment E5515C 8960 NOTICE 9 CALIBRATION ...

Page 159: ...9 CALIBRATION 175 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only MS695 Tachyon36 LGMS695_20120213_Calibration LGD405 LGD405 ...

Page 162: ...9 CALIBRATION 178 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGD405 LGD405 LGD405 LGD405 LGD405 LGD405 LGD405 LGD405 ...

Page 165: ...ION 181 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only RFcable P No 1 2 RIF 200 and phone are connected in 5P E SATA DC_Plug 5P E SATA DC_Plug No ...

Page 173: ...9 CALIBRATION 189 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only MS695 MS695 LGD405 LGD405 LGD405 LGD405 LGD405 LGD405 LGD405 LGD405 ...

Page 176: ... reserved Only for training and service purposes LGE Internal Use Only 10 HIDDEN MENU Hidden Menu Start Start shortcut keys 3845 405 Hidden Menu Start the desired menu Menu click Version Info Classified Information representation Hidden Menu Settings Version Info ...

Page 177: ...ry Reset Factory Reset Reset as default Factory Settings Factory Reset Power Off Reset as default Factory Settings and Power Off Hidden menu WCDMA Only Factory Reset AAT DeviceTest All auto Test Full You can test all functions automatically All autoTest Full Power You can check Test Results When you touch the screen with pushing power key ...

Page 178: ...s PASS SD Card connecting is PASS Ear Phone No connecting is PASS TA wrong No connecting is PASS SmartCover No connecting is PASS battery ID Right Battery ID is pass Key PressTest Check below Items Up Down key Hard Key Power key Hard Key Memo key Hard key Menu key Touch Key Home key Touch Key Back key Touch Key SIM Switch key touch key Proximity Sensor Blind the Proximity sensor CameraTest Snapsho...

Page 179: ...2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only CamcorderTest Camera is recoding for 5 seconds VT CameraTest Show the VT Camera image Display CheckTest Check Black White Color ...

Page 180: ...2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only SoundTest Check the sound VibratorTest Check the vibration IrRCTest Touch the Start Button and check IrRC function through JIG ...

Page 181: ... and service purposes LGE Internal Use Only Touch DrawingTest Draw a guide line Motion SensorTest Check 3 positions Magnetic sensor Position horizontally Position Vertically Position side GPS BT WifiTest GPS RF test CNO is some value OK Bluetooth Scanning is PASS OK WiFi Scanning is PASS OK ...

Page 182: ...l right reserved Only for training and service purposes LGE Internal Use Only FM RadioTest Connect wired headset Check the volume of FM radio LoopbackTest Check the Audio loopback Check the Speaker loopback Individual item You can test only individual item ...

Page 183: ...UIDE 199 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 11 DISASSEMBLE GUIDE 1 Disassemble Battery Cover Take apart the battery cover using notch below ...

Page 184: ...SSEMBLE GUIDE 200 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 Disassemble Battery Screw Take apart the battery and remove screw 11 point ...

Page 185: ...Only for training and service purposes LGE Internal Use Only 3 Disassemble Rear Cover 1 2 3 4 Be carefully C Clip damage 1 Using the tool or hand make gap between Rear Cover and Front Cover 2 Insert spatula in the bottom right of the phone and unhook right top and left Back view ...

Page 186: ... Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 Disassemble Main PCB Be carefully damage narrow part of PCB 1 Take connectors and coaxial cable 1 6 out of the Main PCB 2 Take apart the Main PCB ...

Page 188: ...opyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 12 EXPLODED VIEW REPLACEMENT PART LIST This document is draft version so the contents will be updated after registering the final one ...

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