LG D686 Service Manual Download Page 115

Page: 115 / 214

3. TROUBLE SHOOTING

- 115 -

Only for training and service purposes

LGE Internal Use Only

C849

C851
100n

C830

C839
1u

C835

100n

C829

100n

C834

C846

100n

C845

10p

C847

C84

0.1u

C836

0.1u

C837

120

FB802

TP813

TP812

TP811

TP810

U801

L12

N12

M11

N11

M10

H11

H12

J11

J12

L13

M13

N13

N10

L10

L11

J13

H13

F13

G13

B12

A11

C11

A12

C12

C13

A13

B13

E12

H10

E13

D13

B11

RX_5G_IN TX5G_OUT TX2G_OUT RX2G_I

RX2G_I

EED

EESK EEC

CLK_D

SD1_DAT1 SD1_DAT2 SD1_DAT3 SD1_CM

SD1_CLK SD1_DAT0 AVSS33_B

AVSS33_PA_

AVSS13_WIFISX_1 AVSS33_WIFISX_2 AVSS13_B

AVSS13_PLL_1 AVSS13_PLL_2 AVSS13_TRX2G5G GND1 GND2 AVDD13_PLL_1 AVDD13_PLL_2 AVDD13_B

AVDD13_TRX5G AVDD13_WIFISX_1 AVDD33_P

AVDD33_B

AVDD33_WIFISX_2 DVDDIO_SDIO1 ANTSEL_4 ANTSEL_3 ANTSEL_2 ANTSEL_1 ANTSEL_0 WLAN_ACT AVSS13_BTSXAFE_

AVSS13_BTSXAFE_

AVDD13_BTAFE

AVSS13_BTAFE_1

AVSS13_BTSXAFE

AVSS13_BTSX_1

AVSS13_BTSX_2

GND3

NC1

OSC1_GPS

SYNC

ECLOCK

DUTY_LOSS

RF_INN_GPS

RF_INP_GPS

GPIO1_25

GPIO1_24

GPIO1_26

GPIO1_27

GPIO1_28

AVDD28_OSC

AVDD13_SXIF_GPS

AVDD13_LNA_GPS

AVSS28_OSC

AVSS13_RX_GPS

AVSS13_SXIF_GPS

GPIO1_13

GPIO1_12

GPIO1_14

RTCCLK_O

RTCCLK

VRTC

AVSSRTC

FM_AUIN_R

FM_AUIN_L

FM_AUOUT_R

FM_AUOUT_L

FM_TX_OUT

FM_RX_IN_N

FM_RX_IN_P

I2S_DATA_IN

I2S_DATA_OUT

I2C_SDA

I2C_SCL

I2S_CLK

I2S_WS

NC2

FM_VDD28

FM_VDD13

FM_VSS2

FM_VSS1

FB803

120

C831

100p

+2V8_VIO_MT

SD1_DAT1 SD1_DAT2 SD1_DAT3

WIFI_TX

ANTSEL_1 ANTSEL_0

SD1_CLK

SD1_CM

SD1_DAT0

WIFI_AVDD13

WIFI_RX_BT_TR

WF_PA_VC

Close to MT6577

3. Make star connection for AVDD13 (Both E6,E7 and E4,C4,G1)

Close to MT6620

Summary of Contents for D686

Page 1: ...Internal Use Only Service Manual LG D686 Date September 2013 Issue 0 9 ...

Page 2: ... TROUBLE SHOOTING 23 3 1WCDMA Rx Part 23 3 2WCDMATx Part 37 3 3 GSM Rx Part 54 3 4 GSMTx PartTroubleshooting 67 3 5 Power 75 3 6 Charging 80 3 7 USB 82 3 8 Audio 83 3 9 6 AXIS Sensor 97 3 10 Proximity Sensor 100 3 11Touch Sensor 102 3 12Vibrator 104 3 13 Camera 106 3 14 LCD 110 3 15 BT Wifi 113 3 16 GPS Part 117 3 17 FM Radio 122 3 18 IRRC 124 4 DOWNLOAD 127 5 BLOCK DIAGRAM 144 6 CIRCUIT DIAGRAM 1...

Page 3: ...ecurity 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 make chang...

Page 4: ...tem board they should spread the floor with anti static mat which is also grounded Use a suitable grounded soldering iron Keep sensitive parts in these protective packages until these are used When returning system boards or parts like EEPROM to the factory use the protective package as described 1 Introduction A phone may interfere with sensitive laboratory equipment medical equipment etc Interfe...

Page 5: ... GSM850 TX 824 849 MHz GSM850 RX 869 894 MHz DCS1800 TX 1710 1785 MHz DCS1800 RX 1805 1880 MHz PCS1900 TX 1850 1910 MHz PCS1900 RX 1930 1990 MHz Application Standard 2 3 Main Parts Item Part Name Comment AP Chip MT6577 MTK CP Chip MT6577 MTK LG D685 Product SPEC 4 2 1 Product Name LG D685 WCDMA 850 900 1900 2100 GSM850 EGSM DCS PCS HSUPA 5 8Mbps cat6 HSDPA 7 2Mbps cat8 GPRS Class12 EDGE Rx only Cl...

Page 6: ...typ Other Country 3 140mAh typ 3 040mAh min Li Ion 5 Chipset MT6577 6 Memory 8GB EMMC 8Gb LPDDR2 7 LCD Size 5 5 inch Dot 540 H X 960 V Color 16 7M colors Display Type Active matrix TFT Transmissive Type NTSC Typ 70 Contrast Ratio Typ 1000 1 Pixel Pitch 0 042mm 201 6ppi Color temperature 5000 9000 K typ 6500K 8 Main Camera 8M Type CMOS image sensor Resolution 3296 H X 2512 V pixels Frame Rate 22 5 ...

Page 7: ...280x960 Pixel x size 1 1um X 1 1um square pixel 10 Audio 1 MIDI MIDI 2 Mono 15 X 11 X 3T Speaker 3 Receiver 13 X 07 X 2 7T Wideband Receiver 11 Bluetooth Effective Distance 10M Distance 0 m 10 m depend on environment 12 WLAN standard IEEE 802 11 b g n Throughput Max 40Mbps SDIO Driver performance depend on environment 0 50m depend on environment 13 GPS type A GPS GNSS ...

Page 8: ...0 Hz Minimum Output Power 50 dBm 3 84MHz Occupied Bandwidth 4 6 MHz Adjacent Channel Leakage Power Ratio Δf 5MHz 33 dBm 3 84MHz Δf 10MHz 43 dBm 3 84MHz Error Vector Magnitude EVM 17 Peak Code Domain Error 15 dBm 3 84MHz Open Loop Output Power Ior 106 7dBm 3 84MHz 46 7 28 7 dBm 3 84MHz Ior 65 7dBm 3 84MHz 23 0 5 0 dBm 3 84MHz Ior 25 0dBm 3 84MHz 0 0 14 0 dBm 3 84MHz Transmit Off Power 56 dBm 3 84MH...

Page 9: ...2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LG D685 Product SPEC Transmit Spurious Emission 9kHz 150kHz 36 dBm 150kHz 30MHz 36 dBm 30MHz 1GHz 36 dBm 1GHz 12 5GHz 30 dBm ...

Page 10: ...nt Channel Selectivity ACS ACS 33 dB where BER 0 001 when Îor REFÎor 14 dB 3 84 MHz Ioac 52 dBm 3 84 MHz 5 MHz Blocking Characteristic BER 0 001 when Îor REFÎor 3 dB 3 84 MHz Iblocking 56 dBm 3 84 MHz Fuw offset 10 MHz or Iblocking 44 dBm 3 84 MHz Fuw offset 15 MHz Spurious Response BER 0 001 when Îor REFÎor 3 dB 3 84 MHz Iblocking 44 dBm Intermodulation BER 0 001 when Îor REFÎor 3 dB 3 84 MHz Iou...

Page 11: ...p 0 0 dBm 1 dB dB Step 1 Step 0 6 dB 2 3 dB dB Step 2 Step 3 1 dB 0 6 dB dB Step 5 Step 4 0 dB 0 6 dB dB Step 6 Step 7 5 dB 2 3 dB dB 5 9A Spectrum Emission Mask with HS DPCCH Δf 2 5 3 5MHz 35 15 Δf 2 5 dBc 30KHz Δf 3 5 7 5MHz 35 1 Δf 3 5 dBc 1MHz Δf 7 5 8 5MHz 39 10 Δf 7 5 dBc 1MHz Δf 8 5 12 5MHz 49 dBc 1MHz 5 10A Adjacent Channel Leakage Power Ratio with HS DPCCH Δf 5MHz 33 dBm 3 84MHz Δf 10MHz ...

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 23dBm 600kHz 21dBm 24dBm 5 0 26dBm Reference Sensitivity TCH ...

Page 13: ...uency Range DH5 PRBS9 30dBc 100kHz RBW 2400 2483 5 MHz Tx Output Spectrum 20dB BW DH5 PRBS9 Δf fH fL 1 MHz Tx Output Spectrum Adjacent Output Power DH5 PRBS9 M N 2 20 dBm M N 3 40 dBm Modulation Index DH5 11110000 f1AVG 140 175 kHz DH5 10101010 f2MAX 115 kHz f2AVG f1AVG 0 8 Initial Carrier Freq Tolerance DH5 PRBS9 75 75 kHz Carrier Frequency Drift DH1 10101010 Freq Drift 25 25 kHz Drift Rate 20 20...

Page 14: ...1 PRBS9 Input power BT_w 70 dBm Sensitivity Multi Slot Packet DH5 PRBS9 Input power BT_w 70 dBm C I Performance DH1 PRBS9 Input power BT_i C I Co Channel 60dBm BT 11 dB C I 1MHz 60dBm BT 0 C I 2MHz 60dBm BT 30 C I 3MHz 67dBm BT 40 37 C I Image 67dBm BT 9 C I Image 1MHz 67dBm BT 20 Blocking Performance DH1 PRBS9 Input power CW 30M 2 GHz 67dBm BT 10 dBm 2 2 4 GHz 67dBm BT 27 2 5 3 GHz 67dBm BT 27 3 ...

Page 15: ... for training and service purposes LGE Internal Use Only LG D685 Product SPEC Intermodulation Performance DH1 PRBS9 Input power CW_i Δf 5MHz CW_i Δf 10MHz BT_i 64dBm BT_w 39 dBm Δf 5MHz CW_i Δf 10MHz BT_i 64dBm BT_w 39 dBm Maximum Input Level DH1 PRBS9 Input power BT_w 20 dBm ...

Page 16: ...y Tolerance within 25 PPM Spectrum Mask 30 fc 22MHz f fc 11MHz 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 76dBm 1Mbps 2Mbps 5 5Mbps 11Mbps FER 8 Rx Max input Sensitivity 10dB...

Page 17: ...Transmitter constellation error rms EVM 5dB 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 Channel Rejection PER 10 ACR 16dB 6Mbps...

Page 18: ...ellation error rms EVM 5dB 6 5Mbps 10dB 13Mbps 13dB 19 5Mbps 16dB 26Mbps 19dB 39Mbps 22dB 52Mbps 25dB 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 20dB...

Page 19: ...G Under 10mA DRX 7 Under 10mA P P 5 4 BT Connected idle Under 15mA Under 15mA 5 Talk Mode Max Pwr Under 600mA Avg Tx 10dBm Under 300 mA Avg GSM LVL 5 under 300 mA Avg 6 Power Off Mode under 500uA Under 500 uA 7 Backup Battery under 5uA under 5uA LG D685 Product SPEC 18 10 GPS receiver specification Item Spec Sensitivity Test Success rate 60 154 dBm 11 Current consumption Test condition for Standby...

Page 20: ...dBm Over 88 2dBm Over 91 2dBm 5 4 86 2dBm 89 2dBm 92 2dBm 4 3 90 2dBm 93 2dBm 96 2dBm 3 2 96 2dBm 99 2dBm 100 2dBm 2 1 100 2dBm 103 2dBm 104 2dBm 1 0 107 3dBm 109 3dBm 106 3dBm 13 Current consumption Standby WCDMA Over 350 Hours Under 4 5mA DRX 7 BATT Capacity 3140mAh 14 Charging hour Under 4 hour 3140mAh battery 1 2ATA LG D685 Product SPEC 12 RSSI indicator Based on Cell power BAR WCDMA GSM DCS P...

Page 21: ...19 98 97 BAR 19 18 93 92 BAR 18 17 88 87 BAR 17 16 83 82 BAR 16 15 78 77 BAR 15 14 73 72 BAR 14 13 68 67 BAR 13 12 63 62 BAR 12 11 58 57 BAR 11 10 53 52 BAR 10 9 48 47 BAR 9 8 43 42 BAR 8 7 38 37 BAR 7 6 33 32 BAR 6 5 28 27 BAR 5 4 23 22 BAR 4 3 16 15 BAR 3 2 13 12 BAR 2 1 8 7 BAR 1 0 3 2 Low Battery Pop up 4 15 One Time popup No call Critical Low Battery Pop up 0 3 Every Level change popup No cal...

Page 23: ... 3 TROUBLE SHOOTING 3 1 WCDMA Rx Part 3 1 1 WCDMA_B1 B2 B5 B8 Rx RxTEST SETUP DL Channel 10700 9800 44407 3013 Sector Power dBm 23 23 23 5 23 5 1 Check DC Power Supply circuit START 2 Check MT6162 XO 3 Check RF Signal path Re download S W Cal There are noTest Points on the IQ Data Line So It is impossible to check the IQ DataWave form ...

Page 24: ...SHOOTING 24 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TOPSide MT6162 U101 SKY77589 U102 DPX FL106 B8 DPX FL102 B2 DPX B1 FL105 DPX B5 FL103 ...

Page 25: ...is OK See Next page to Check XO Circuit Yes CheckTP1 C109 1V8_VRF_MTK is OK The Problem may be Logic part Refer to Logic troubleshoot The Problem may be Logic part Refer to Logic troubleshoot The Problem may be Logic part Refer to Logic troubleshoot No No Yes CheckTP2 C103 2V85_VRF_MTK is OK Yes CheckTP3 C118 2V8_VTCXO_MTK is OK 3 1 1 1 Checking DC Power supply circuit ...

Page 26: ...106 39p 1 2 U101 1 B1 C2 D1 E2 F1 G2 H1 J2 K1 L2 A12 B11 A10 B9 A8 B7 A6 B5 A4 B3 A2 REFCLK1 REFCLK2 REFCLK3 VDDXO NC4 XO2 XO1 REFIN VTUNE CLK_MODE VSUP2b GND1 VSUP1 VDD_18 VSUP2a VDD_28b CLK DATA0 DATA1 VINT EN GND2 PGND 1u C108 1 2 C112 1n 1n C114 C118 0 1u C119 1u C109 1u 1 2 C103 1u 1 2 C105 1u 1 2 2V85_VRF_MTK 2V8_VTCXO_MTK SYSCLK BSI1_CLK BSI1_CS1 BSI1_DATA BSI1_CS0 1V8_VIO_MTK 1V8_VRF_MTK M...

Page 27: ... service purposes LGE Internal Use Only START YES Replace Main B D NO CheckTP1 C114 Is it 26MHz XO circuit is Ok See next page to check RF signal path XO circuit is Ok See next page to check RF signal path YES NO Is it similar Replace U801 and then checkTP1 C122 3 1 1 2 Checking MT6162 XO circuit ...

Page 28: ...B11 A10 B9 A8 B7 A6 B5 A4 B3 A2 REFCLK1 REFCLK2 REFCLK3 VDDXO NC4 XO2 XO1 REFIN VTUNE CLK_MODE VSUP2b GND1 VSUP1 VDD_18 VSUP2a VDD_28b CLK DATA0 DATA1 VINT EN GND2 PGND 1u C108 1 2 C112 1n 1n C114 C118 0 1u C119 1u C109 1u 1 2 C103 1u 1 2 C105 1u 1 2 2V85_VRF_MTK 2V8_VTCXO_MTK SYSCLK BSI1_CLK BSI1_CS1 BSI1_DATA BSI1_CS0 1V8_VIO_MTK 1V8_VRF_MTK MAIN_CLK_26MHz TP1 MT6162 U101 TP1 C114 MAIN_CLK_26MHz...

Page 29: ...naldetectedatthat point CheckTP2atU102 Checkifthereisanymajordifferencereferring ToFigure3 1 1 c Isanysignaldetectedatthat point Isanysignaldetectedat thatpoint CheckTP3 R103 TP4 R104 TP5 R105 atU102 IsanyDCsignaldetected atthatpoints START PAMisOK Seenextpagetocheck DPX ReplaceU102 Checkanything Checkanything TheProblemmaybeLogicpart RefertoLogictroubleshoot Yes Yes Yes Yes No No No No 3 1 1 3 Ch...

Page 30: ...pyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TOPSide BOTSide SKY77589 U102 TP2 B5 C115 TP2 B1 C163 TP2 B8 C117 TP2 B2 C113 TP3 R103 TP4 R104 TP5 R105 TP1 L104 ...

Page 31: ...2 11 10 17 9 8 7 6 4 3 28 1 44 43 42 41 40 39 38 37 36 35 32 33 34 24 23 22 29 30 31 18 21 25 20 26 19 27 5 2 GND2 GND5 GND11 TRX1 ANT TRX2 GND10 TRX3 VRAMP PGND3 PGND2 PGND1 TRX4 TRX5 TRX6 PGND6 PGND5 PGND4 PGND7 PGND8 PGND9 PGND10 PGND11 PGND12 PGND13 PGND14 PGND15 PGND16 GND1 GND12 GND3 GND4 GND6 GND7 GND8 TX_HB_IN TXEN TX_LB_IN BS2 BS1 VBATT VCC GND9 MODE C126 6 8p C111 0 5p L108 100n L104 2 2...

Page 33: ...nternal Use Only CheckTP1atDPX Checkifthereisanymajordifferencereferring ToFigure3 1 1 b Isanysignaldetectedatthat point START AllWCDMA_B1 B2 B5 B8Rxcheckiscomplete Ifthephonesilldonotwork replace mainboard Checkanythingpoint ReplaceFL103 Yes Yes Isanysignaldetectedat thatpoint No No 3 1 1 4 Checking RF signal path FEM ...

Page 34: ...ng and service purposes LGE Internal Use Only TOPSide DPX FL103 B5 DPX FL105 B1 DPX FL106 B8 DPX FL102 B2 TP1 B5 L121 TP1 B1 C160 TP1 B8 L132 TP1 B2 L137 FL103 881 5MHz 7 5 8 4 9 2 3 1 6 ANT RX1 TX GND1 GND5 GND2 RX2 GND3 GND4 L122 5 6n C150 18n L121 6p TRX_B5_G850 B5 TRx G850 Rx TP1 B5 L121 ...

Page 35: ...05 2140MHz 7 5 8 4 9 2 3 1 6 ANT RX1 TX GND1 GND5 GND2 RX2 GND3 GND4 TRX_B1 B1 TRx TP1 B1 C160 L133 6 8n L132 3 9n FL106 942 5MHz 7 5 8 4 9 2 3 1 6 ANT RX1 TX GND1 GND5 GND2 RX2 GND3 GND4 DNI C173 TRX_B8_G900 B8 TRx G900 Rx TP1 B8 L132 L117 DNI C137 100p FL102 7 5 8 4 9 2 3 1 6 ANT RX1 TX GND1 GND5 GND2 RX2 GND3 GND4 C139 2 2n TRX_B2_G1900 B2 TRx G1900 Rx TP1 B2 L137 ...

Page 37: ...ly 3 2 WCDMATx Part 3 2 1WCDMA_Tx B1 B2 B5 B8 There are noTest Points on the IQ Data Line So It is impossible to check the IQ DataWave form WCDMA B1 B2 B5 B8TxTEST SETUP Test Channel 10700 9800 44407 3013 Sector Power 55 dBm 1 Check DC Power Supply Circuit START 2 Check MT6162 XO 4 Check DPX 5 Check PAM Re download S W Cal 3 Check PA ...

Page 38: ...SHOOTING 38 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TOPSide MT6162 U101 SKY77589 U102 DPX FL106 B8 DPX FL102 B2 DPX B1 FL105 DPX B5 FL103 ...

Page 39: ...circuit START No DC Power Supply Circuit is OK See Next page to Check XO Circuit Yes CheckTP1 C109 1V8_VRF_MTK is OK The Problem may be Logic part Refer to Logic troubleshoot The Problem may be Logic part Refer to Logic troubleshoot The Problem may be Logic part Refer to Logic troubleshoot No No Yes CheckTP2 C103 2V85_VRF_MTK is OK Yes CheckTP3 C118 2V8_VTCXO_MTK is OK ...

Page 40: ...106 39p 1 2 U101 1 B1 C2 D1 E2 F1 G2 H1 J2 K1 L2 A12 B11 A10 B9 A8 B7 A6 B5 A4 B3 A2 REFCLK1 REFCLK2 REFCLK3 VDDXO NC4 XO2 XO1 REFIN VTUNE CLK_MODE VSUP2b GND1 VSUP1 VDD_18 VSUP2a VDD_28b CLK DATA0 DATA1 VINT EN GND2 PGND 1u C108 1 2 C112 1n 1n C114 C118 0 1u C119 1u C109 1u 1 2 C103 1u 1 2 C105 1u 1 2 2V85_VRF_MTK 2V8_VTCXO_MTK SYSCLK BSI1_CLK BSI1_CS1 BSI1_DATA BSI1_CS0 1V8_VIO_MTK 1V8_VRF_MTK M...

Page 41: ... service purposes LGE Internal Use Only 3 2 1 2 Checking MT6162 XO circuit START YES Replace Main B D NO CheckTP1 C114 Is it 26MHz XO circuit is Ok See next page to check RF signal path XO circuit is Ok See next page to check RF signal path YES NO Is it similar Replace U801 and then checkTP1 C122 ...

Page 42: ...B11 A10 B9 A8 B7 A6 B5 A4 B3 A2 REFCLK1 REFCLK2 REFCLK3 VDDXO NC4 XO2 XO1 REFIN VTUNE CLK_MODE VSUP2b GND1 VSUP1 VDD_18 VSUP2a VDD_28b CLK DATA0 DATA1 VINT EN GND2 PGND 1u C108 1 2 C112 1n 1n C114 C118 0 1u C119 1u C109 1u 1 2 C103 1u 1 2 C105 1u 1 2 2V85_VRF_MTK 2V8_VTCXO_MTK SYSCLK BSI1_CLK BSI1_CS1 BSI1_DATA BSI1_CS0 1V8_VIO_MTK 1V8_VRF_MTK MAIN_CLK_26MHz TP1 MT6162 U101 TP1 C114 MAIN_CLK_26MHz...

Page 43: ...at U103 U104 Check if there is any major difference referring To Figure 4 2 1 4 Is it similar CheckTP2 at U103 U104 Check if there is any major difference referring To Figure 4 2 1 4 Is it similar CheckTP3 at U103 U104 Whether it is higher than 1 5V Check anything point PAM circuits OK See next page The Problem may be Logic part Refer to Logic troubleshoot 3 2 1 3 Checking B1 B2 B5 B8TX PA ...

Page 44: ...cs Inc All right reserved Only for training and service purposes LGE Internal Use Only TOPSide PAM U103 B1 B5 PAM U104 B2 B8 TP2 B5 L124 TP3 B2 B8 C154 TP3 B1 B5 C135 TP2 B1 C166 TP1 B1 L136 TP2 B8 L134 TP2 B2 C140 TP1 B2 L135 TP1 B5 C152 TP1 B8 C161 ...

Page 45: ..._MTK L124 1p R111 49 9 C135 0 1u L136 2 2n 3GTX_B5 PA_ON_B1_EN PA_R0 PA_ON_B5_EN 3GTX_B1 TP3 B1 B5 TP2 B5 _RF out TP2 B1 _RF out TP1 B5 _RF IN TP1 B1 _RF IN DNI C179 L135 1 5n C141 5 6n L134 15p C140 12p L118 0 5p C178 DNI C158 100n C169 100p C167 100p C168 100p VBATT 3V4_VWPAM_MTK U104 15 13 14 10 5 6 4 12 7 3 8 11 1 9 2 RFIN_LB GND1 VEN_LB RFOUT_HB CPL_OUT VBATT VEN_HB VCC RFIN_HB VMODE NC CPL_I...

Page 47: ...ly 3 2 1 4 Checking RF signal path DPX Figure 3 1 1 b CheckTP1atDPX Checkifthereisanymajordifferencereferring ToFigure3 1 1 b Isanysignaldetectedatthat point START AllWCDMA_B1 B2 B5 B8Rxcheckiscomplete Ifthephonesilldonotwork replace mainboard Check anythingpoint ReplaceFL 102 103 105 106 Yes Yes Isanysignaldetectedat thatpoint No No ...

Page 48: ...ng and service purposes LGE Internal Use Only TOPSide DPX FL103 B5 DPX FL105 B1 DPX FL106 B8 DPX FL102 B2 TP1 B5 L121 TP1 B1 C160 TP1 B8 L132 TP1 B2 L137 FL103 881 5MHz 7 5 8 4 9 2 3 1 6 ANT RX1 TX GND1 GND5 GND2 RX2 GND3 GND4 L122 5 6n C150 18n L121 6p TRX_B5_G850 B5 TRx G850 Rx TP1 B5 L121 ...

Page 49: ...05 2140MHz 7 5 8 4 9 2 3 1 6 ANT RX1 TX GND1 GND5 GND2 RX2 GND3 GND4 TRX_B1 B1 TRx TP1 B1 C160 L133 6 8n L132 3 9n FL106 942 5MHz 7 5 8 4 9 2 3 1 6 ANT RX1 TX GND1 GND5 GND2 RX2 GND3 GND4 DNI C173 TRX_B8_G900 B8 TRx G900 Rx TP1 B8 L132 L117 DNI C137 100p FL102 7 5 8 4 9 2 3 1 6 ANT RX1 TX GND1 GND5 GND2 RX2 GND3 GND4 C139 2 2n TRX_B2_G1900 B2 TRx G1900 Rx TP1 B2 L137 ...

Page 50: ...cereferring ToFigure3 1 1 b Isanysignaldetectedatthat point CheckTP2atU102 Checkifthereisanymajordifferencereferring ToFigure3 1 1 b Isanysignaldetectedatthat point Isanysignaldetectedat thatpoint CheckTP3 R103 TP4 R104 TP5 R105 atU102 IsanyDCsignaldetected atthatpoints START PAMisOK SeenextpagetocheckDPX ReplaceU102 Checkanything Checkanything TheProblemmaybeLogicpart RefertoLogictroubleshoot Yes...

Page 51: ...pyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TOPSide BOTSide SKY77589 U102 TP2 B5 C115 TP2 B1 C163 TP2 B8 C117 TP2 B2 C113 TP3 R103 TP4 R104 TP5 R105 TP1 L104 ...

Page 52: ...2 11 10 17 9 8 7 6 4 3 28 1 44 43 42 41 40 39 38 37 36 35 32 33 34 24 23 22 29 30 31 18 21 25 20 26 19 27 5 2 GND2 GND5 GND11 TRX1 ANT TRX2 GND10 TRX3 VRAMP PGND3 PGND2 PGND1 TRX4 TRX5 TRX6 PGND6 PGND5 PGND4 PGND7 PGND8 PGND9 PGND10 PGND11 PGND12 PGND13 PGND14 PGND15 PGND16 GND1 GND12 GND3 GND4 GND6 GND7 GND8 TX_HB_IN TXEN TX_LB_IN BS2 BS1 VBATT VCC GND9 MODE C126 6 8p C111 0 5p L108 100n L104 2 2...

Page 54: ... GSM850 900 DCS PCS Rx There are noTest Points on the IQ Data Line So It is impossible to check the IQ DataWave form RxTEST SETUP BCH GSM850 EGSM DCS PCS for GSM900 TCH GSM850 EGSM DCS PCS for GSM900 Channel 190 37 698 661 for GSM 900 Sector Power 30 dBm 33dBm 1 Check DC Power Supply circuit START 2 Check MT6162 XO Re download S W Cal 3 Check RF Signal path ...

Page 55: ...55 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TOPSide MT6162 U101 SKY77589 U102 DPX FL106 GSM900 DPX FL102 GSM1900 SAW FL101 GSM1800 DPX GSM850 FL103 ...

Page 56: ...circuit START No DC Power Supply Circuit is OK See Next page to Check XO Circuit Yes CheckTP1 C109 1V8_VRF_MTK is OK The Problem may be Logic part Refer to Logic troubleshoot The Problem may be Logic part Refer to Logic troubleshoot The Problem may be Logic part Refer to Logic troubleshoot No No Yes CheckTP2 C103 2V85_VRF_MTK is OK Yes CheckTP3 C118 2V8_VTCXO_MTK is OK ...

Page 57: ...106 39p 1 2 U101 1 B1 C2 D1 E2 F1 G2 H1 J2 K1 L2 A12 B11 A10 B9 A8 B7 A6 B5 A4 B3 A2 REFCLK1 REFCLK2 REFCLK3 VDDXO NC4 XO2 XO1 REFIN VTUNE CLK_MODE VSUP2b GND1 VSUP1 VDD_18 VSUP2a VDD_28b CLK DATA0 DATA1 VINT EN GND2 PGND 1u C108 1 2 C112 1n 1n C114 C118 0 1u C119 1u C109 1u 1 2 C103 1u 1 2 C105 1u 1 2 2V85_VRF_MTK 2V8_VTCXO_MTK SYSCLK BSI1_CLK BSI1_CS1 BSI1_DATA BSI1_CS0 1V8_VIO_MTK 1V8_VRF_MTK M...

Page 58: ... service purposes LGE Internal Use Only 3 3 1 2 Checking MT6162 XO circuit START YES Replace Main B D NO CheckTP1 C114 Is it 26MHz XO circuit is Ok See next page to check RF signal path XO circuit is Ok See next page to check RF signal path YES NO Is it similar Replace U801 and then checkTP1 C122 ...

Page 59: ...B11 A10 B9 A8 B7 A6 B5 A4 B3 A2 REFCLK1 REFCLK2 REFCLK3 VDDXO NC4 XO2 XO1 REFIN VTUNE CLK_MODE VSUP2b GND1 VSUP1 VDD_18 VSUP2a VDD_28b CLK DATA0 DATA1 VINT EN GND2 PGND 1u C108 1 2 C112 1n 1n C114 C118 0 1u C119 1u C109 1u 1 2 C103 1u 1 2 C105 1u 1 2 2V85_VRF_MTK 2V8_VTCXO_MTK SYSCLK BSI1_CLK BSI1_CS1 BSI1_DATA BSI1_CS0 1V8_VIO_MTK 1V8_VRF_MTK MAIN_CLK_26MHz TP1 MT6162 U101 TP1 C114 MAIN_CLK_26MHz...

Page 60: ...sanymajordifferencereferring Isanysignaldetectedatthatpoint CheckTP2atU102 Checkifthereisanymajordifferencereferring Isanysignaldetectedatthatpoint Isanysignaldetectedat thatpoint CheckTP3 R103 TP4 R104 TP5 R105 atU102 IsanyDCsignaldetected atthatpoints START PAMisOK SeenextpagetocheckDPX ReplaceU102 Checkanything Checkanything TheProblemmaybeLogicpart RefertoLogictroubleshoot Yes Yes Yes Yes No N...

Page 61: ...ht 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TOPSide BOTSide TP1 L104 SKY77589 U102 TP2 G850 C115 TP2 G900 C117 TP2 G1800 L103 TP2 G1900 C113 TP3 R103 TP4 R104 TP5 R105 ...

Page 62: ... 35 32 33 34 24 23 22 29 30 31 18 21 25 20 26 19 27 5 2 GND2 GND5 GND11 TRX1 ANT TRX2 GND10 TRX3 VRAMP PGND3 PGND2 PGND1 TRX4 TRX5 TRX6 PGND6 PGND5 PGND4 PGND7 PGND8 PGND9 PGND10 PGND11 PGND12 PGND13 PGND14 PGND15 PGND16 GND1 GND12 GND3 GND4 GND6 GND7 GND8 TX_HB_IN TXEN TX_LB_IN BS2 BS1 VBATT VCC GND9 MODE C126 6 8p C111 0 5p L108 100n L104 2 2n 1K R105 R104 1K R103 1K VBATT ANT_SEL0 ANT_SEL1 ANT_...

Page 63: ...g and service purposes LGE Internal Use Only L113 DNI C117 100p C115 100p L110 12n L112 12n C113 100p TRX_B2_G1900 TRX_B5_G850 TRX_B8_G900 TP2 G850 TP2 G1900 TP2 G900 L102 8 2n 1 2n L106 1842 5MHz FL101 4 5 1 3 2 G1 O1 IN G2 O2 L101 1 2n L105 5 6n L103 10p RX_G1800_INP RX_G1800_INN TP2 G1800 ...

Page 64: ...s LGE Internal Use Only 3 3 1 4 Checking RF Flow SAW filter CheckTP1 L101 for 1800bandat FL101 Checkifthereisanymajordifferencereferring ToFigure3 1 1 a Isanysignaldetectedat thatpoint START SAWfilterisOK ReplacemainB D ReplaceFL101 Checkanythingpoint Yes Yes ToFigure3 1 1 b Isanysignaldetectedat thatpoint No No ...

Page 65: ...Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TOPSide L102 8 2n 1 2n L106 1842 5MHz FL101 4 5 1 3 2 G1 O1 IN G2 O2 L101 1 2n L105 5 6n L103 10p RX_G1800_INP RX_G1800_INN TP1 TP1 L101 SAW FL101 ...

Page 67: ...Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 4 GSM Tx Part Troubleshooting 3 4 1 GSM850 900 DCS PCS Tx TOPSide MT6162 U101 SKY77589 U102 DPX FL106 B8 DPX FL102 B2 DPX FL103 B5 DPX FL105 B1 ...

Page 68: ...circuit START No DC Power Supply Circuit is OK See Next page to Check XO Circuit Yes CheckTP1 C109 1V8_VRF_MTK is OK The Problem may be Logic part Refer to Logic troubleshoot The Problem may be Logic part Refer to Logic troubleshoot The Problem may be Logic part Refer to Logic troubleshoot No No Yes CheckTP2 C103 2V85_VRF_MTK is OK Yes CheckTP3 C118 2V8_VTCXO_MTK is OK ...

Page 69: ...106 39p 1 2 U101 1 B1 C2 D1 E2 F1 G2 H1 J2 K1 L2 A12 B11 A10 B9 A8 B7 A6 B5 A4 B3 A2 REFCLK1 REFCLK2 REFCLK3 VDDXO NC4 XO2 XO1 REFIN VTUNE CLK_MODE VSUP2b GND1 VSUP1 VDD_18 VSUP2a VDD_28b CLK DATA0 DATA1 VINT EN GND2 PGND 1u C108 1 2 C112 1n 1n C114 C118 0 1u C119 1u C109 1u 1 2 C103 1u 1 2 C105 1u 1 2 2V85_VRF_MTK 2V8_VTCXO_MTK SYSCLK BSI1_CLK BSI1_CS1 BSI1_DATA BSI1_CS0 1V8_VIO_MTK 1V8_VRF_MTK M...

Page 70: ... service purposes LGE Internal Use Only 3 4 1 2 Checking MT6162 XO circuit START YES Replace Main B D NO CheckTP1 C114 Is it 26MHz XO circuit is Ok See next page to check RF signal path XO circuit is Ok See next page to check RF signal path YES NO Is it similar Replace U801 and then checkTP1 C122 ...

Page 71: ...B11 A10 B9 A8 B7 A6 B5 A4 B3 A2 REFCLK1 REFCLK2 REFCLK3 VDDXO NC4 XO2 XO1 REFIN VTUNE CLK_MODE VSUP2b GND1 VSUP1 VDD_18 VSUP2a VDD_28b CLK DATA0 DATA1 VINT EN GND2 PGND 1u C108 1 2 C112 1n 1n C114 C118 0 1u C119 1u C109 1u 1 2 C103 1u 1 2 C105 1u 1 2 2V85_VRF_MTK 2V8_VTCXO_MTK SYSCLK BSI1_CLK BSI1_CS1 BSI1_DATA BSI1_CS0 1V8_VIO_MTK 1V8_VRF_MTK MAIN_CLK_26MHz TP1 MT6162 U101 TP1 C114 MAIN_CLK_26MHz...

Page 72: ...02 Yes Yes Yes CheckTP1 L104 at U102 Check if there is any major difference referring To Figure 4 2 1 4 Is it similar CheckTP2 at U102 Check if there is any major difference referring To Figure 4 2 1 4 Is it similar CheckTP3 R103 TP4 R104 TP5 R105 atU102 IsanyDCsignaldetected atthatpoints Check anything point PAM circuits OK See next page The Problem may be Logic part Refer to Logic troubleshoot ...

Page 73: ...TING 73 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TOPSide BOTSide TP1 L104 PAM U102 TP2 850 900 C176 TP2 DCS PCS C177 TP3 R103 TP4 R104 TP5 R105 ...

Page 74: ...1 25 20 26 19 27 5 2 GND2 GND5 GND11 TRX1 ANT TRX2 GND10 TRX3 VRAMP PGND3 PGND2 PGND1 TRX4 TRX5 TRX6 PGND6 PGND5 PGND4 PGND7 PGND8 PGND9 PGND10 PGND11 PGND12 PGND13 PGND14 PGND15 PGND16 GND1 GND12 GND3 GND4 GND6 GND7 GND8 TX_HB_IN TXEN TX_LB_IN BS2 BS1 VBATT VCC GND9 MODE C126 6 8p C111 0 5p L108 100n L104 2 2n 100p C122 DNI C125 DNI C130 1K R105 R104 1K R103 1K VBATT 100p C129 ANT_SEL0 ANT_SEL1 A...

Page 75: ... The main power source of D686 is provided by 1 chip which is MT6329 Power ON sequence of D686 is 57 4 Trouble Shooting 3 5 Power The main power source of D685 is provided by 1 chip which is MT6329 Power ON sequence of D685 is VBAT DDLO VRTC UVLO PWRKEY PWRBB PWRON VCORE VPROC VIO18 VIO28 VM12_INT VA1 VA2 VM12_1 VM12_2 VUSB VTCXO VMC VMCH RESETB ...

Page 76: ...y TP1 R706 high to low Battery voltage higher than 3 6V Check MT6329 Core L301 Voltage level Check MT6329 AP L302 Voltage level Check MT6329 IO L303 Voltage level Check MT6329 RTC CLOCK Check POWER_KEY FPCB Change or charging the Battery L301 Check MT6329 L302 Check R322 L303 Check PM8058 R322 Check MT6577 Change MT6329 And Return to Start No No No No No No No Yes Yes Yes Yes Yes Yes Yes ...

Page 77: ... 2 1 ANT701 MBV62562001 1 FEED ZD701 2 1 MBV62562001 ANT702 1 FEED PWR_ON_SW_N POWER Lock KEY PWR KEY R706 TP1 1K R618 2 1 R620 20m 1u C620 47u C621 100K R617 2 1 R622 4 7K R623 100 47p C618 6 8p C619 VA601 ZD602 CN601 6 4 3 2 1 5 G1 G2 BATT_ID_PULLUP VBATT VTREF BATT_TEMP_ADC BATT_ID FGN_IC 2mm For MTK Fuel Gauge 1 2V BATTERY CONNECTOR CN601 ...

Page 78: ...VCORE_2 VCORE_3 VCORE_FB VPROC_1 VPROC_2 VPROC_3 VPROC_FB VIO18_1 VIO18_2 VIO18_FB VPA_1 VPA_2 VPA_FB VRF18 VRF18_FB 2 2u L302 4 7u C339 1 2 4 7u L304 C336 4 7u 1 2 C333 4 7u 1 2 4 7u C332 1 2 L303 2 2u C334 10n D301 1 2 L305 2 2u 2 1 C337 2 2u 1 2 L301 2 2u 3V4_VWPAM_MTK 1V8_VIO_MTK 1V2_CORE_MTK 1V35_PROC_MTK VBATT 1V8_VRF_MTK VAPROC_FB Core DC DC INDUCTOR L301 AP DC DC INDUCTOR L302 IO DC DC IND...

Page 79: ...LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Core DC DC INDUCTOR L301 IO DC DC INDUCTOR L303 BATTERY CONNECTOR CN601 AP DC DC INDUCTOR L302 TOPSide BOTSide PWR KEY Clip PWR KEY R706 TP1 ...

Page 80: ...arging Procedure Supply theVCHG use aTA or u USB cable The Chaging IC MAX8971EWP control the charging current Charging current flows into the main battery Troubleshooting Check Point Connection of theTA or u USB cable Main battery U606 1n C617 0 1u C614 L602 1u VBATT R621 47m VCHG_OVP_IN 1u C623 1u C624 1V8_VIO_MTK C616 1u C625 4 7u 2 2u C615 2 2u C626 4 7K R619 VCHG_LDO_4V9 U606 C5 D2 D3 D1 A5 B5...

Page 81: ...poses LGE Internal Use Only START Check the Connection of uUSB and battery Change the Charger IC U606 Is the uUSB Cable voltage 4 9V or 5 0V Yes Connection OK Connection OK Is it charging properly After turning on Yes Yes Yes Change I O connector No ChangeTA or uUSB Cable END END No No No Change the Main PCB ...

Page 82: ...OK Yes Connection OK Is the signal ok for USB Yes Yes Change I O connector SUB FPCB CN10000 No Check Connector SUB FPCB CN10001 Change Sub FPCB No No Change the Main PCB END CN10000 11 10 9 5 4 3 2 1 8 7 6 GND CN1001 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 VCHG_OVP_IN LED_R LED_G LED_B MIC_N USB_ID USB_DN USB_DP SPK_LP VMIC MIC_P KROW1_F KCOL1_F SPK_LN SPK_...

Page 83: ...for training and service purposes LGE Internal Use Only MIC1 MIC1 MIC2 MIC2 MT6575 AP MT6620 Connectivity Audio Block Diagram 3 8 Audio 3 8 1 Overview HP L R HS Headphone AMP EAR_L R Dual SPK RCV 3 5 pi FM RADIO SPK Boost AMP SPK Boost AMP 3 8 Audio 3 8 1 Overview AudioBlockDiagram ...

Page 84: ...d case Speaker control signals are generate by MT6577 U201 TPA2015 U501 U502 If low level volume or breaking the sound change speaker module START Check the speaker And reconnect Speaker module Change Main Board Change Speaker Module Hear the sound to the Speaker Yes Yes Yes Check Lower FPCB and Main PCB C508 C507 C506 C505 FB504 FB502 FB501 FB503 L1001 L1004 Speaker Sound OK No No No END ...

Page 85: ...OUBLE SHOOTING 85 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only C507 508 C506 505 U502 U501 FB502 504 FB501 503 Speaker Module L1001 L1004 ...

Page 86: ...0u DNI C512 C503 10u C516 33p C515 33p 60 FB504 FB502 60 L502 2 2u 2 1 U502 D1 D2 D4 D3 B4 A4 B2 B3 A3 A2 A1 C4 C3 B1 C1 C2 GND2 OUT OUT END GND3 PVDD PVOUT SW AGC GAIN GND1 VBAT IN ENB IN GND4 C507 47n 47n C508 HPH_L SPK_LP SPK_LN SPK_AMP_L_EN C507 508 FB502 504 VBATT 2 2u L501 2 1 C502 10u C509 0 10u C501 60 FB501 FB503 60 33p C513 33p C514 U501 D1 D2 D4 D3 B4 A4 B2 B3 A3 A2 A1 C4 C3 B1 C1 C2 GN...

Page 87: ... 3 Receiver Receiver control signals are generate by MT6575 U201 Receiver CN501 START Check the Receiver soundand check receiver wire Change Main Board Receiver Contact is OK Hear the sound to the Receiver Yes Yes Yes Yes Change Receiver Module Can you hear a sound Check main board part FB505 FB506 No No No No END Re assemble the Receiver ...

Page 88: ...ing and service purposes LGE Internal Use Only In case of No Receiver sound not only Receiver fault but Mic fault You must check first voice recording test After voice recording you can hear a recording sound receiver path or parts is something wrong TOPSide Check Contact Status FB505 FB506 ...

Page 89: ...PCB It s operating voice call except speakerphone voice recording camcorder recording START Check the Mic signal by test mode orVoice recording Change Main Board Reconnect or change FPCB connector Voice signal OK Check Mic hole rubber to make the voice signal Yes Yes Yes Yes Check parts about Mic Bias Mic works well Change MIC10000 or MT6577 U201 Mic works well No No No No END ...

Page 90: ...3 TROUBLE SHOOTING 90 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only CheckMainMichole Check C250 C252 andVMIV voltage level C251 TOP ...

Page 91: ...c located on Main PCBTop Side It s operating handset voice call and speakerphone START Check the Mic signal by test mode 2nd loop back or Camcorder test Change Main Board Check parts about Mic Bias Mic works well Check Mic hole rubber to make the voice signal Yes Yes Yes Yes Change Mic MIC501 Mic works well Change MT6577 U201 Mic works well No No No No END ...

Page 92: ...y for training and service purposes LGE Internal Use Only 2nd Mic Hole located on Main PCBTop Side It s operating handset voice call and speakerphone In case ofTest menu loopback 2nd Mic test and Camcorder recording 2nd Mic Hole TOP Check C255 C256 C535 andVMIC voltage level C251 ...

Page 93: ...ar MIC control signals are generate by MT6575 U200 Case A Disable detected headset insert START Didn t display headset icon and play sound via speaker although headset insert Change Main Board Check the left signal and detection line short when headset inserted Change Ear Jack Connector Sound play via headset Yes Yes Yes Change MT6577 U201 Mic works well No No No END ...

Page 94: ...4 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only CaseA Disabledetectedheadsetinsert Ear Jack Connector TOP Check Part about earjack detect FB508 R507 R516 ...

Page 95: ... service purposes LGE Internal Use Only CaseB NoSoundfromHeadset START Didn t play sound via headset although headset insert Change Main Board CheckTPA6136 U503 and peripheral circuits Works well Change Ear Jack Connector Sound play via headset Yes Yes Yes Check MT6577 U201 Works well No No No END ...

Page 96: ...05 In case of you can t heard anything check C518 521 Can heard sound but sound is abnormal check C533 C534 TOP U503 0 R502 2 1 C524 1u C520 1u 1u C518 1u C521 C519 1u 2 2u C517 VBATT U503 D4 D3 D2 D1 C4 B4 B3 A4 A2 B2 C1 A1 B1 C2 A3 C3 SGND OUTL HPVSS GND EN CPN CPP VDD INL HPVDD INL INR HI Z GAIN OUTR INR 1V8_VIO_MTK 100K R505 2 R503 DNI 2 2 2u C523 C522 1u HPH_R HPH_L Headset_AMP_EN HP_AMP_SGND...

Page 97: ...sensor is calibrated by the gyro sensor data using SW algorithm Therefore Gyro sensor error makes the compass sensor malfunction R608 100K 2 1 U604 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 1V8_VIO_MTK 3V0_SENSORS_MTK 100n C610 1 2 C609 100n 1 2 I2C_COMMON_SCL I2C_COMMON_SDA 3AXIS_INT COMPASS_DRDY 6 AXIS SENSOR ...

Page 98: ... Only for training and service purposes LGE Internal Use Only START Check the 6 XIS sensor function Change the main board END END END END Change the 6 AXIS Sensor IC U604 6XIS NG Function is OK Yes Yes Yes Yes 6 AXIS Sensor function is OK 6 AXIS Sensor function is OK No No No ...

Page 100: ...orked as below Send Key click Phone number click Call connected Object moved at the sensor Control the screen s on off operation automatically START Send Key click Phone number click Call connected Object moved at the Proximity sensor Change the main board END END END Check 3V_PROX_AMBIENT TP1 I2C_SENSOR_SDA SCL PROX__INT LCD off Yes Yes Yes Output work well Function is OK No No ...

Page 101: ...y for training and service purposes LGE Internal Use Only TOP Sensor Power TP1 C607 3V0_SENSORS_MTK R628 0 2 1 0 R627 2 1 U603 9 3 5 4 6 7 2 8 1 SDA VDD INT SCL GND LEDK LEDA LDR NC 10K R603 2 1 C607 2 2u 1 2 1V8_VIO_MTK I2C_SENSOR_SDA I2C_SENSOR_SCL PROX_INT Sensor Power TP1 C607 ...

Page 102: ...ce purposes LGE Internal Use Only 3 11Touch Sensor START ReconnectTouch Module CN406 Change Main Board Check Power 1V8_VIO_MTKTP1 3V0_TOUCH_MTK TP2 Power is OK TouchWoks OK Yes Yes Yes Yes Check I2C Line Signal Line TP3 TP4 TouchWorks OK ChangeTouch Module TouchWorks OK No No No No END Change MT6329 U804 ...

Page 103: ...4 2 1 VA403 2 1 R412 22K R410 10K 1V8_VIO_MTK 3V0_TOUCH_MTK VA406 CN406 6 5 7 4 8 3 9 2 10 1 4 7K R408 VA405 1V8_VIO_MTK C434 1u VA407 2 1 R411 0 I2C_SENSOR_SDA I2C_SENSOR_SCL Touch_Reset TOUCH_ID TOUCH_INT TOUCH TP3 VA403 TP4 VA404 1V8_VIO_MTK TP1 VA405 3V0_TOUCH_ MTK TP2 VA407 3V0_TOUCH_ MTK TP2 VA407 1V8_VIO_MTK TP1 VA405 TP3 VA403 TP4 VA404 ...

Page 104: ...d Only for training and service purposes LGE Internal Use Only 3 12Vibrator Vibrator signal path is MT6329 U804 Vibrator MotorType is DC Motor START Change Main Board Check Power 3 0V Motor Power is OK Yes Yes Check Main PCBVB601 Pad Is it Normal No No END Change MT6329 U804 ...

Page 105: ...5 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TOP VB601 VB601 2 1 D602 20 R616 R615 20 C613 1u L601 18n 1 VA602 3V0_VIBR_MTK NON Q COIN MOTOR VB601 MOTOR ...

Page 106: ...3 13 Camera 3 13 1 8M Main 8M camera control signals are generated by MT6575 U200 Main Chipset START Check the camera Conn And reconnect the camera Change the Camera CheckVIO TP1 AVDD TP2 DVDD TP3 Camera is OK Yes Yes Yes Yes Check the camera signals MCLK TP4 MIPI_ CLK TP5 MIPI_DATA TP6 Camera is OK No No No END Change the Main board END ...

Page 107: ...4 2 2u CN402 13 12 14 11 15 10 16 9 17 8 18 7 19 6 20 5 21 4 22 3 23 2 24 1 R403 0 FL403 1 4 3 P3 P2 P4 P1 P6 P5 1V8_CAM_VIO I2C_COMMON_SCL I2C_COMMON_SDA CAM_MCLK 1V8_CAM_VIO CAM_RESET_N CAM_DATA0_N_8M CAM_DATA0_P_8M CAM_CLK_N_8M CAM_CLK_P_8M CAM_DATA1_N_8M CAM_DATA1_P_8M 2V8_CAM_VCM 1V2_CAM_DVDD 2V8_CAM_AVDD WP 8M MIPI CAMERA MCLK TP4 R403 or C419 VIO TP1 C423 AVDD TP2 C424 DVDD TP3 C425 MIPI_DA...

Page 108: ... service purposes LGE Internal Use Only 3 13 2 1 3MVT 1 3M camera control signals are generated by MT6575 U200 Main Chipset START Check the camera Conn And reconnect the camera Change the Camera CheckVIO TP1 AVDD TP2 DVDD TP3 Camera is OK Yes Yes Yes Camera is OK No No END Change the Main board END ...

Page 109: ...nly BOT C432 100n 100n C431 100n C433 CN405 11 10 12 9 13 8 14 7 15 6 16 5 17 4 18 3 19 2 20 1 1V2_CAM_DVDD 2V8_CAM_AVDD 1V8_CAM_VIO ZD401 ZD402 ZD403 I2C_COMMON_SCL I2C_COMMON_SDA CAM_MCLK CAM_DATA0_N_1 3M CAM_CLK_N_1 3M VT_CAM_RESET_N CAM_CLK_P_1 3M CAM_DATA0_P_1 3M DVDD TP3 C431 AVDD TP2 C433 VIO TP1 C432 VIO TP1 AVDD TP2 DVDD TP3 ...

Page 110: ... VCI and IO And its interface is MIPI having three data lanes and one clock lane START Press PWR key turn the power ON The LCD works Change the Main Board Disconnect and re connect LCD Connector CN401 LCD display is OK Is the circuit Powered Yes Yes Yes No No No END Change the LCD Module Follow the Power ON Troubleshooting Check LCD Power 3V0_LCD_VCI_MTK TP1 1V8_LCD_VIO_MTK TP2 MIPI_CLK TP3 MIPI_D...

Page 111: ...0_N LCD_MIPI_DATA1_N LCD_PWM LCD_MAKER_ID LCD_RESET_N LCD_MIPI_CLK_P LCD_MIPI_DATA1_P LCD_MIPI_DATA0_P LED_C1 LEDA LED_C2 Power for Analog 3 0V VIO TP2 C410 MIPI_CLK TP3 FL401 MIPI_DATA TP4 FL402 VCI TP1 C411 L403 1u 100K R405 R404 100K VA401 10u L402 C415 10u D401 1u C414 10u C416 U404 B4 C1 A3 A4 E3 D3 E2 E1 B3 B2 A1 D2 A2 E4 B1 D4 D1 C4 C3 C2 TX STROBE VIN BLED1 PWM FLED2 SWB OUTF1 SCL FLED1 OU...

Page 112: ... SHOOTING 112 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only BOT LEDA TP5 C414 VIO TP2 C410 VCI TP1 C411 MIPI_DATA TP4 FL402 MIPI_CLK TP3 FL401 ...

Page 113: ...R320 C419 C807 C864 VA405 U604 L304 C863 C263 CN201 C806 L104 L806 C871 FB504 R708 FL404 C845 ZD402 C320 C868 VA705 C826 5 R812 VA406 TP801 C610 R411 C329 ZD705 C342 R701 C837 ANT801 C706 C823 R817 R806 R718 R703 TP814 FL403 CN402 ZD704 C333 C856 C431 R710 SC217 C508 C866 C831 R412 L108 CN501 R814 R301 C331 R810 FB801 FB502 C327 C702 C852 C860 L805 C841 C111 C808 C809 C332 VA403 L812 BAT700 C503 C...

Page 114: ... C843 DNI 1 2 C871 100p C840 1 5n 2 1 FL803 3 2 1 IN GND OUT C873 DNI 1 2 R804 10K 2 1 10K R805 C833 100p 1 2 C872 DNI 1 2 C841 1n 2 1 100p C850 1 2 DNI C853 1 2 C854 DNI 1 2 L810 DNI 2 1 FL802 4 3 5 2 6 1 OUT1 VCTL1 GND IN OUT2 VCTL2 8 2p C838 C844 8 2p WIFI_TX ANTSEL_1 ANTSEL_0 WIFI_RX_BT_TRX Close to Pin A3 Close to Pin A5 SPDT for BT Wi Fi TP6 TP5 TP3 TP1 TP4 TP2 1 3 4 2 ...

Page 115: ...AVSS13_PLL_2 AVSS13_TRX2G5G GND1 GND2 AVDD13_PLL_1 AVDD13_PLL_2 AVDD13_BB AVDD13_TRX5G AVDD13_WIFISX_1 AVDD33_PA AVDD33_BA AVDD33_WIFISX_2 DVDDIO_SDIO1 ANTSEL_4 ANTSEL_3 ANTSEL_2 ANTSEL_1 ANTSEL_0 WLAN_ACT AVSS13_BTSXAFE_1 AVSS13_BTSXAFE_2 AVSS13_BTSXAFE_3 AVSS13_BTSXAFE_4 NC3 AVDD13_BTAFE AVSS13_BTAFE_1 AVSS13_BTSXAFE AVSS13_BTSX_1 AVSS13_BTSX_2 GND3 NC1 OSC1_GPS SYNC ECLOCK DUTY_LOSS RF_INN_GPS ...

Page 116: ...iFi will work properly Check the Signal level atTP1 U801 Check the signal level atTP2 U801 Check the signal level atTP3 U801 Check the signal level atTP4 FL802 Check the signal level atTP5 FL803 Check the Antenna Clip ANT804 Replace U801 Replace U801 Replace U801 Replace FL802 Replace FL803 Replace ANT804 No No No No No No Yes Yes Yes Yes Yes Yes ...

Page 117: ...C864 VA405 U604 L304 C863 C263 CN201 C806 L104 L806 C871 FB504 R708 FL404 C845 ZD402 C320 C868 VA705 C826 5 R812 VA406 TP801 C610 R411 C329 ZD705 C342 R701 C837 ANT801 C706 C823 R817 R806 R718 R703 TP814 FL403 CN402 ZD704 C333 C856 C431 R710 SC217 C508 C866 C831 R412 L108 CN501 R814 R301 C331 R810 FB801 FB502 C327 C702 C852 C860 L805 C841 C111 C808 C809 C332 VA403 L812 BAT700 C503 C858 C323 C718 C...

Page 118: ... C863 C263 CN201 C806 L104 L806 C871 VA408 FB504 R708 FL404 C845 ZD402 C320 C868 VA705 C826 CN405 TP401 R812 VA406 TP801 C610 R411 C329 ZD705 C342 R701 C837 ANT801 C706 C823 R817 C618 R806 R718 R703 TP814 FL403 CN402 ZD704 C333 C856 C431 R710 SC217 C508 C866 C831 R412 L108 CN501 R814 R301 C331 R810 FB801 FB502 C327 C702 C852 C860 L805 C841 C111 C808 C809 C619 C332 C411 VA403 L812 BAT700 C503 C858 ...

Page 119: ...2001 1 FEED ZD801 2 1 L804 5 6n L805 6 8n 2 1 L806 100p 1 2 DNI L807 1 2 C818 33p C819 DNI 100p C817 1575 42 MHz FL801 5 2 4 1 3 G3 IN OUT G1 G2 1 2 GND L802 3n 2 1 C821 4 7n 2 1 R803 1K 2 1 L803 12 2 1 C816 0 1u C815 18p DNI L808 2 1 6 8p C825 U802 3 2 5 4 1 RF_IN FIL_OUT VDD S_D GND 2V8_TCXO_LDO GPS_LNA_EN RF_INP_GPS Near To LNA TP2 TP3 TP4 TP5 TP6 ...

Page 120: ... SD1_CMD SD1_CLK SD1_DAT0 AVSS33_BA AVSS33_PA_1 AVSS33_PA_2 AVSS13_WIFISX_1 AVSS33_WIFISX_2 AVSS13_BB AVSS13_PLL_1 AVSS13_PLL_2 AVSS13_TRX2G5G GND1 GND2 AVDD13_PLL_1 AVDD13_PLL_2 AVDD13_BB AVDD13_TRX5G AVDD13_WIFISX_1 AVDD33_PA AVDD33_BA AVDD33_WIFISX_2 DVDDIO_SDIO1 ANTSEL_4 ANTSEL_3 ANTSEL_2 ANTSEL_1 ANTSEL_0 DVDDIO_SD2 AVDD33_BTTX AVDD13_BTRX AVDD13_BTAFE AVSS13_BTAFE_1 AVSS13_BTSXAFE AVSS13_BTS...

Page 121: ...TART GPS will work properly Check the Signal level atTP1 X600 Check the voltage atTP5 2 8V Check the signal level atTP6 U601 Check the signal level atTP4 FL600 Check the Antenna ClipTP2 ANT601 Replace X600 The Problem may be Logic part Refer to Logic troubleshoot Replace U601 Replace FL600 Replace ANT601 No No No No No Yes Yes Yes Yes Yes ...

Page 122: ...All right reserved Only for training and service purposes LGE Internal Use Only 3 17 FM Radio TOP L503 R515 L504 100n L504 2 1 470K R507 1 2 1V8_VIO_MTK L503 100n R513 DNI 1 C533 47p 1 2 47p C534 1 2 R516 47K 2 1 EAR_R EAR_L FM_ANT HS_JACK_DET L503 L504 R513 ...

Page 123: ...or training and service purposes LGE Internal Use Only START FM will work properly Check the ear jack condition Good Check the components condition Good R515 L504 L503 Check BiasVoltage Good Replace ear jack Give the addition solder in R515 L504 L503 Replace U801 No No No Yes Yes Yes ...

Page 124: ...OOTING 124 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 18 IRRC TOP TP2 LD601 2V8_IrRC_LDO TP4 LINE_OUT_IRRC TP1 C530 2V8_IrRC_LDO TP3 IRRC_TX ...

Page 125: ...2 4 1 VOUT VDD GND CE PGND R624 0 2 1 300 R612 2 1 Q601 1 2 3 100K R610 2 1 LD601 2 1 R613 1K 2 1 2V8_IrRC_LDO 2V8_IrRC_LDO ZD601 U605 4 3 5 2 6 1 B C GND VCC A Y 2V8_IrRC_LDO R614 1K 2 1 C611 4 7u 2 1 TP607 1 Q602 1 2 3 C612 0 1u 1 2 1V8_VIO_MTK VBATT 1u C629 1 2 C630 1u 1 2 LINE_OUT_IRRC IRRC_TX IrRC_LDO_EN TP4 LINE_OUT_IRRC TP1 C530 2V8_IrRC_LDO TP3 IRRC_TX TP2 LD601 2V8_IrRC_LDO ...

Page 126: ...l right reserved Only for training and service purposes LGE Internal Use Only START Entire PCB looks being damaged Check for whetherTP1 is 0V CheckTP2 Is it right CheckTP3 right CheckTP4 right Replace U608 Replace LD601 Replace U605 No No No No Yes Yes Yes Yes ...

Page 127: ... 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 139: ...4 DOWNLOAD 139 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGD686 LGD686 LGD686AT 00 V10a SSV XXX JUN 03 2013 0 tot LGD686 ...

Page 140: ...4 DOWNLOAD 140 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGD686 LGD686 LGD686AT 00 V10a SSV XXX JUN 03 2013 0 tot ...

Page 144: ... EAR_L R MIPI I F BL Booster Flash Driver Touch Screen JTAG 8Gb LPDDR2 8GB eMMC SKY77589 TX MODULE I2C1 Camera FLASH I2C1 I2C0 I2C0 MIC1 MIC1 MIC2 MIC2 MAIN ANT Switching Charging IC SD I F Volume BTN USIM Dual SIM I2C0 NML 32 768kHz RCV 3 5 pi BSI MT6620 Connectivity I2S GPS LNA SPDT BT WIFI BT WiFi ANT PCM PMIC MT6329 PWR BTN Motor SD CARD 26MHz 2G DCS SAW FILTER 3G QUAD BAND 26MHz 2G TX FM RADI...

Page 145: ..._N UL_I_N UL_I_P UL_Q_N UL_Q_P PAM W850 DUPLEXER W900 DUPLEXER PAM AFC MT6577 BPI_BUS0 BPI_BUS1 BPI_BUS2 PA_ON_B2_EN BPI_BUS10 PA_ON_B1_EN BPI_BUS11 PA_ON_B5_EN BPI_BUS12 PA_ON_B8_EN BPI_BUS13 BPI_BUS5 APC GSM850_GSM900_TX DCS_PCS_TX Rx_DCS Coupler Coupler LNA5N LNA5P CLK DATA0 DATA1 EN BSI1_CLK BSI1_DATA BSI1_CS1 BSI1_CS0 CLK26M VM0 PA_R0 TX_EN VRAMP REF_CLK MODE BS VSW_EN Thermistor AUX_IN3 VDD_...

Page 146: ... 0 31 ED_CLK ED_CLK_B DDRAM_DATA_ 0 31 LPDDR2X32 8Gb 2CS eNAND x8 8GB DAT 0 7 eMMC_DATA 0 7 RST eMMC_RST CMD eMMC_CMD CLKM eMMC_CLK H9TP65A8JDACPR KGM MSDC1_INSI VMCH SCLK SIO USIM1_DATA USIM1_CLK 3V0_VSIM_VCC USIM1_RESET_N SRST VSIM USIM1 SCLK2 SIO2 USIM2_DATA USIM2_CLK 3V0_VSIM2_MTK USIM2_RESET_N SRST2 VSIM2 USIM2 DDRAM_DQS_ 0 3 _P DQS 0 3 _T DDRAM_DQS_ 0 3 _N DQS 0 3 _C DDRAM_DQM 0 3 DM 0 3 3V3...

Page 147: ..._MTK Backlight Camera Flash LM3639 LED_A LED_C1 I2C_COMMON_SCL I2C_COMMON_SDA LCD_BL_EN LCD_MIPI_DATA 0 1 _P LCD_MIPI_DATA 0 1 _N LCD_MIPI_CLK_P LCD_MIPI_CLK_N LCD_RESET_N LCD_PWM LCD_MAKER_ID SCL_1 SDA_1 KP_ROW5 TDP 0 1 TDN 0 1 TCP TCN LRSTB VCAM_IO VCAMD LSCE1B TOUCH Synaptics S7020 1V8_VIO_MTK 3V_TOUCH_MTK TOUCH_INT I2C_SENSOR_SDA I2C_SENSOR_SCL EINT6 SDA_0 SCL_0 VIO18 VGP2 2V8_LCD_VCI_MTK VCAM...

Page 148: ...RA MIPI 1 3M FF CAERA MIPI MCLK CAM_DATA 0 1 _P CAM_MCLK CAM_VCM_PWDN SCL SDA I2C_COMMON_SDA I2C_COMMON_SCL CAM_RESET_N CMMCLK RCP RDP 0 1 CMPDN KP_ROW6 KP_ROW7 CMRST 2V8_CAM_AVDD 2V8_CAM_VCM 1V8_CAM_VIO RCN CAM_CLK_P CAM_CLK_N CAM_DATA 0 1 _N RDN 0 1 OUT1 FLED1 FLED2 VBAT Battery KP_ROW3 SCL SDA STORBE FLASH_EN KP_ROW2 TX FLASH_LTD EMI Filter EMI Filter OUT2 OUT3 OUT4 1V2_CAM_DVDD MIPI Switch LG ...

Page 149: ...TPA2015D1 MT6577 HPH_L HPLP HPRP OUT OUT HPH_R VIO18 IN IN AU_VIN0_P AU_VIN0_N AU_VIN1_P AU_VIN1_N VMIC VMIC SPK SPK_RP SPK_RN EAR_L EAR_R Headset HSP HSN Main MIC EARBIAS EARMIC_BIAS MIC_P MIC_N AU_VIN2_P AU_VIN2_N 2nd MIC MIC2_P MIC2_N EARMIC_P EARMIC_N RCV SPK SPK_LP SPK_LN Headphone amp TPA6136 Headset_AMP_EN INL INR EN OUT OUT SPK_AMP_R_EN EN SPK_AMP_L_EN EN LG D686 HW Block Diagram Audio ...

Page 150: ...ENSOR MT6577 6 Axis Sensor BMC 150 PROXIMITY SENSOR APDS 9130 200 1V8_VIO_MTK 3V0_SENSORS_MTK I2C_SENSOR_SCL I2C_SENSOR_SDA 3AXIS_INT SCL SDI COMPASS_DRDY PROX_INT INT SCL_0 SDA_0 EINT0 KP_ROW4 EINT3 INT1 VCAM_AF VIO18 SCL SDA I2C_COMMON_SCL I2C_COMMON_SDA KP_ROW6 KP_ROW7 DRDY Hall IC BU52031NVX OUT HALLIC_INT EINT1 LG D686 HW Block Diagram SENSOR ...

Page 151: ...DAICLK MT6577 DATPCMIN DAIPCMOUT BTSSYNC RX2G_IP TX2G_OUT Ear jack SAW Diplexer WIFI_RX_BT_TRX WIFI_TX ANTSEL_0 ANTSEL_1 SD2_DAT1 SD2_DAT3 UTXD3 URXD3 SAW LNA RX_INP_GPS OSC1_GPS SYNC 26MHz NLD8 MSDC2_DAT1 PMU_EN SYSRST_S RTCCLK EINT2 ENT1 DAIRSTB 32K_OUT BT_WIFI GPS FM RADIO I2S PCM UART BT WIFI GPS INTERRUPT VBAT MT6329 VIO_MTK_1V8 2V8 32 768kHz I2S_DATA_IN I2S_CLK I2S_WS PCM1OUT PCM1CLK PCM1IN ...

Page 152: ...6 8n L131 33n L132 3 9n C171 100p L119 33n C148 2 7n L121 6p C158 100n U103 15 13 14 10 5 6 4 12 7 3 8 11 1 9 2 RFIN_LB GND1 VEN_LB RFOUT_HB CPL_OUT VBATT VEN_HB VCC RFIN_HB VMODE NC CPL_IN RFOUT_LB GND2 PGND C105 1u L103 10p FL105 2140MHz 7 5 8 4 9 2 3 1 6 ANT RX1 TX GND1 GND5 GND2 RX2 GND3 GND4 C151 1 8n SW102 4 3 2 1 ANT COMMON G3 G4 C146 100p C121 39p 39p C120 1K R101 VBATT C110 2 2n C169 100p...

Page 153: ..._DVFS_13 VDDK_DVFS_OUT DVSS18_MIPIRX DVSS18_MIPITX VSS_1 VSS_2 VSS_3 VSS_4 VSS_5 VSS_6 VSS_7 VSS_8 VSS_9 VSS_10 VSS_11 VSS_12 VSS_13 VSS_14 VSS_15 VSS_16 VSS_17 VSS_18 VSS_19 VSS_20 VSS_21 VSS_22 VSS_23 VSS_24 VSS_25 VSS_26 VSS_27 VSS_28 VSS_29 VSS_30 VSS_31 VSS_32 VSS_33 VSS_34 VSS_35 VSS_36 VSS_37 VSS_38 VSS_39 VSS_40 VSS_41 VSS_42 VSS_43 VSS_44 VSS_45 VSS_46 VSS_47 VSS_48 VSS_49 VSS_50 VSS_51 V...

Page 154: ... Y10 Y9 Y2 Y1 W1 W10 E10 B10 B1 A10 A9 A2 A1 W3 W2 V3 P3 N3 M2 E3 E2 D6 D5 D4 D3 D2 D1 C6 C4 C2 E1 B9 T1 M1 H1 V5 V2 U1 M8 F2 F5 G1 R5 V9 V6 U10 T10 P10 M5 K10 J5 H10 G10 F9 F6 C3 VSSQM VSSQ1 VSSQ2 VSSQ3 VSSQ4 VSSQ5 VSSQ6 VSSQ7 VSSQ8 VSSQ10 VSSQ11 VSSQ12 VSSQ13 VSSQ9 VSS3 VSS2 VSS1 VSS4 VSS5 VSS6 VSS7 VSSCA1 VSSCA2 VSSCA3 VSSM1 VSSM2 NC1 NC2 NC3 NC4 NC5 NC6 NC7 NC8 NC9 NC10 NC11 NC13 NC14 NC15 NC1...

Page 155: ... GND1 VDD SCL GND2 G TRIG VOUT GPO B ADDR_SEL1 CFLY1N SDA EN CLK_32K INT CFLY2P CFLY2N R CFLY1P D401 1V8_CAM_VIO 1u C414 10u C416 U404 B4 C1 A3 A4 E3 D3 E2 E1 B3 B2 A1 D2 A2 E4 B1 D4 D1 C4 C3 C2 TX STROBE VIN BLED1 PWM FLED2 SWB OUTF1 SCL FLED1 OUTF2 SWF2 BLED2 OVP SDA GND3 GND1 SWF1 EN GND2 VBATT 2V8_CAM_AVDD R411 0 VBATT 0 R401 U402 D2 D3 D1 E2 E3 E1 C2 C1 C3 B3 B2 B1 A3 A2 A1 ENN OUTN CFLY2 ENP...

Page 156: ...33p C513 R508 1 5K 33p C514 C515 33p 1V8_VIO_MTK 100K R505 2 R503 DNI 2 VA501 2 1 2 2u C523 60 FB504 R513 DNI 1 J501 S W_Detect SPK_L SPK_R MIC GND C522 1u FB502 60 L502 2 2u 2 1 U501 D1 D2 D4 D3 B4 A4 B2 B3 A3 A2 A1 C4 C3 B1 C1 C2 GND2 OUT OUT END GND3 PVDD PVOUT SW AGC GAIN GND1 VBAT IN ENB IN GND4 U502 D1 D2 D4 D3 B4 A4 B2 B3 A3 A2 A1 C4 C3 B1 C1 C2 GND2 OUT OUT END GND3 PVDD PVOUT SW AGC GAIN ...

Page 157: ... ZD601 U605 4 3 5 2 6 1 B C GND VCC A Y 2V8_IrRC_LDO R614 1K 2 1 C611 4 7u 2 1 TP607 1 Q602 1 2 3 C612 0 1u 1 2 1V8_VIO_MTK 1K R618 2 1 R620 20m 1u C620 47u C621 100K R617 2 1 R622 4 7K R623 100 47p C618 6 8p C619 VA601 ZD602 CN601 6 4 3 2 1 5 G1 G2 R608 100K 2 1 U604 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 1V8_VIO_MTK 3V0_SENSORS_MTK 100n C...

Page 158: ...ZD702 2 1 2 2u VA706 1 2 R705 10K 2 1 ZD704 2 1 R709 100 J701 G2 G1 G3 8 G4 7 6 3 5 2 4 1 DAT2 VDD CD DAT3 CLK CMD VSS DAT0 DET DAT1 POL GND1 GND2 C715 1u DNI C711 1 2 VMIC MBV62562001 ANT702 1 FEED SW703 2 5 4 3 1 1 3 4 5 2 C718 1u 1 2 2V8_VRTC_MTK CN701 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 1V8_VIO_MTK KCOL1 KROW0 KROW1 3V0_VSIM2_MTK 3V0_VSIM_MTK MIC_N ...

Page 159: ...TSXAFE_1 AVSS13_BTSXAFE_2 AVSS13_BTSXAFE_3 AVSS13_BTSXAFE_4 NC3 BT_PRIORITY BT_ACT BTTRX_IN BTTRX_IP PCM1CLK PCMOUT PCM1IN PCM1_SYNC SD2_DAT1 SD2_DAT2 SD2_DAT3 SD2_CMD SD2_CLK SD2_DAT0 DVDDIO_SD2 AVDD33_BTTX AVDD13_BTRX AVDD13_BTAFE AVSS13_BTAFE_1 AVSS13_BTSXAFE AVSS13_BTSX_1 AVSS13_BTSX_2 GND3 NC1 OSC1_GPS SYNC ECLOCK DUTY_LOSS RF_INN_GPS RF_INP_GPS GPIO1_25 GPIO1_24 GPIO1_26 GPIO1_27 GPIO1_28 AV...

Page 160: ...100 R10004 2 1 CN1001 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 R10002 100 2 1 100 R10001 2 1 LD10001 EAV62094101 CL 425F UCC SD TS 1 3 4 2 LD10000 1 3 4 2 ANT10002 1 FEED ANT10000 1 FEED ANT10003 1 FEED SW10000 4 2 3 1 CN10000 11 10 9 5 4 3 2 1 8 7 6 ANT10005 1 FEED ANT10004 1 FEED D10001 2 1 ANT10001 1 FEED VCHG_OVP_IN LED_R LED_R LED_G LED_G LED_B LED_B MI...

Page 161: ...7 BGA PIN MAP 161 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only U101 MT6162 Transceiver 7 BGA PIN MAP U101 MT6162 Transceiver Not Used ...

Page 162: ...AP 162 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only U201 MT6577 Digital Baseband Processor 3G U201 MT6577 Digital Baseband Processor 3G Not Used ...

Page 163: ...7 BGA PIN MAP 163 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only U301 H9TP65A8JDACPR U301 H9TP65A8JDACPR Not Used NC ...

Page 165: ...215 SC212 C849 C208 C164 FL101 C181 SC207 L117 C535 C213 R314 FB510 R101 C418 R102 C178 C825 FB508 C304 X101 C250 R621 C303 L121 C523 C611 R103 C714 C815 U608 C249 C805 R404 C146 R308 L601 C246 FB511 C612 R409 C818 C212 U405 R207 C622 ZD504 C210 C109 FL802 C201 R613 C155 C102 C716 ZD505 C231 C115 C230 C719 R312 C616 U503 C153 R601 L503 R315 C318 D704 R615 C413 C252 C835 C149 C103 L135 U801 C160 C2...

Page 166: ... C702 ANT806 C852 R416 L501 C860 L805 C841 C111 C808 C809 D702 C619 C332 U401 C411 VA403 L812 BAT700 C503 C858 C323 C718 C410 C262 ZD602 C872 R705 C422 C427 C705 C836 C847 C843 R628 D701 L303 C324 C707 VA410 C873 R406 SC218 C425 C507 R716 C516 R417 C510 J501 C336 C414 C621 R317 C848 C433 C609 CN601 CN401 C813 ZD801 VA703 C822 R408 C851 C803 C322 VA407 C827 U803 D711 C801 FB501 C334 R811 C715 C709 ...

Page 167: ...rsion sothecontentswillbeupdatedafterregisteringthefinalone 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 ...

Page 168: ...9 CALIBRATION 168 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only MS695 Tachyon36 LGMS695_20120213_Calibration D686 ...

Page 172: ...9 CALIBRATION 172 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGD686 LGD686 LGD686 LGD686 LGD686 LGD686 LGD686 LGD686 D686 ...

Page 174: ...74 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 5 0V 5 0V RFcable P No 1 2 RIF 200 and phone are connected in 5P E SATA DC_Plug 5P E SATA DC_Plug No ...

Page 183: ...9 CALIBRATION 183 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGD686 LGD686 LGD686 LGD686 LGD686 LGD686 LGD686 ...

Page 186: ... 2 All AutoTest Result Partial 3 All AutoTest Full Device functionality testing at the factory to use 4 All AutoTest Result Full Above test s results are saved 5 AATFULL power key 6 Normal Boot power key 7 FTM Boot power key 8 Power Off power key 9 Version Name 10 Individual Item List 1 Auto Detecting ItemTest 2 Key PressTest 3 Camera Main test 4 CamcorderTest 5 Display checkTest 6 RingTest 7 Vibr...

Page 187: ... Check the SIM1 card Check the SIM2 card Check the SD card Check Ear phone jack Check Battery Ejected ear jack is normal Key CompassTest Memo key Check Recognition Up Down key Check Recognition Menu key Check Recognition Home key Check Recognition Back key Check Recognition SIM_SWITCH key Check Recognition End key Check recognition Phone contact with your fingers in the top of the sensor determine...

Page 188: ...ctronics Inc All right reserved Only for training and service purposes LGE Internal Use Only CameraTest 1 Main Camera Preview CameraTest 2 Camcorder Preview Display checkTest LCD Black White test Check the Black display Check theWhite display ...

Page 189: ...ght 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only RingTest Check sound Check the sound Vibrator test A case by state vibration tests Touch window test Write with finger ...

Page 190: ... Only for training and service purposes LGE Internal Use Only GPS BTWI FITest Check the GPS scanning Check the GLONASS N A Check theWIFI scanning Check the BT scanning FM RadioTest Check the FM Radio Audio LoopbackTest Check the Receiver loopback Check the speaker loopback ...

Page 191: ...service purposes LGE Internal Use Only ELTTest Automatic Mode Test Automatically Manual Mode Test selectivity ELTTest Automatic Mode LCD Automatic on off test time setting ELT ManualTest LCD Backlight Ringtone Vibrator Camera Audio Loopback test on the device is working The ability to use plant ...

Page 192: ...are and Create logt txt CRCTest EFS CRC EFS CRC Detail DB Check DB Check and Compare DB Dump DeviceTest Auto Detecting Item LCD Keypad Touch Audio Vibrator Camera Sensor External Memory GPS RTC Battery ETC AutoDetectingTest USIM SD card Ear jack Charing Mode Check the SIM card Check the SD card Check Ear phone jack Chck Barometer N A Ejected ear jack is normal ...

Page 193: ... W LCDTest Auto Automatically without clicking ManualTest Click on the following screen AutomaticTest Automatically without clicking LCD QTest Not Implemented LCD ModuleTest LCD DisplayTest MuraTest leakage of Light uniformity Keypad test list Dop Qwerty Touch test list Finger Paing GridTouchTest GridTouch Color Change BlockTouchTest CircleTouchTest Pinch In OutTest Touch KeyTest FirmwareVersion ...

Page 194: ...G Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Audio test list Ring Effect Sound MessageTone Vibrator test list On Off Duration Camera test list Snapshot Camcoding CameraVT Camera Aging ...

Page 195: ...y Camera test list Proximity Motion Sensor Compass External Memory test list SD Card Status SD Card Mount Status Directory Creation in SD Card File Creation in SD Card File Modification in SD Card File deletion in SD Card GPS BTWI FITest Check the GPS scanning Check the GLONASS scanning Check theWIFI scanning Check the BT scanning ...

Page 196: ...All right reserved Only for training and service purposes LGE Internal Use Only DeviceTest RTCTest BatteryTest Battery Status Battery Health Battery Mode of Charging Battery Level BatteryTechnology BatteryVoltage BatteryTemperature DeviceTest ETC ADC Info ...

Page 197: ...sion Info ALC Auto run Diag Settings Data Settings Battery Audio Camera Bluetooth ERS ETC LCD Always On Version Info Classified Information representation SWVersion Info FirmwareVersion BasebandVersion KernelVersion HWVersion FactoryVersion Touch FirmwareVersion Build finger print ALC Normal Mode Change to Normal Mode ALC Mode Change to ALC Mode ...

Page 198: ...ll right reserved Only for training and service purposes LGE Internal Use Only AutoRun Switch to AutoRun Enable or Disable Diag Settings USB Set for Diag UART Set for Diag Null port Data Settings USB Set for Data BT Set for Data UART Set for Data Null port ...

Page 199: ... service purposes LGE Internal Use Only Battery Charging Bypass Boot Change to Pseudo LT Mode Normal Mode Battery Fake Mode On Off Audio Get ServiceType Audio Settings Normal Mode Headset Mode LoudSpeaker Mode Speech Enhancement Debug Info Speech Logger Audio Logger Camera Camera Clock Settings ...

Page 200: ...10 HIDDEN MENU 200 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Bluetooth Settings ERS Settings Client Status ERSTest ETC ADC Info ...

Page 201: ... purposes LGE Internal Use Only LCD Always On Switch to LCD Backlight ON OFF WCDMA Only test list Factory Reset Modem Settings ModuleTest SIMTest Not Implemented CallTest Streaming WAP Debug FM RadioTest Not Implemented DRMTest ContactsTest Log service Flex test SMPL Counter North America APN Settings ...

Page 202: ...rmat SD card External SD Card Data reset Factory Rest Changing the Factory Delete Userdata Userdata reset Modem Settings Enter to EngineerMode EngeinnerMode List Telephony Connectivity HardwareTesting Location Log and Debugging Others Telephony BandMode BSPTelephonyDevTool DualTalk NetworkInfo ModemTest Network Setting GPRS Fast Dormancy Simme Lock ...

Page 203: ...rved Only for training and service purposes LGE Internal Use Only Connectivity Bluetooth FM Receiver FMTransmitter WiFi CDS Information HardwareTesting Audio Camerea CPU StressTest Display IO Memory Power SD CardTest TouchScreen USB Location Location Based Service YGPS ...

Page 204: ...y for training and service purposes LGE Internal Use Only Log and Debugging BatteryLog Debug Utils System Logger TagLog Others Settings Font SWLA Thermal ModuleTest list BT DUT SMS Prefer Set FOTATest LCD Always On FS_TEST Hidden Reset Heap Free Info StabilityTest ChargingTest ...

Page 205: ...ce purposes LGE Internal Use Only CallTest Auto CallTest VC Auto answer Call Duration WCDMA Only Streaming Streaming Setting Edit Edit Enable or not Streaming Log Log Enable or not Wap Debug Change UAString View UAString Edit UAString Enable Disable X wap profile Display Certificates Change UAPROFILE ...

Page 206: ...l right reserved Only for training and service purposes LGE Internal Use Only DRMTest WCDMA Only ContactsTest Insert specific number of contact info Log service Enable of disable creating below log files Maing log System log Radio log Events log Kernel log ...

Page 207: ...10 HIDDEN MENU 207 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only WCDMA Only FlexTest SMPL Counter North America APN Settings ...

Page 208: ...G Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only WLANTest WLAN performance on SW Fake Language Switch to Fake language mode On Off GPSTest gpsAppTest AirTest Enable Disable gpsAppTestTest ...

Page 210: ...Inc All right reserved Only for training and service purposes LGE Internal Use Only 11 DISASSEMBLE GUIDE 1 Disassemble Battery Cover Rear 1 Remove Battery Cover Assy 2 Remove Battery and Stylus Pen 3 Remove 9 Point Screws From Rear 4 Remove Cover Rear Assy ...

Page 211: ...right 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 Disassemble Main PCB Remove FPCB CONNECTOR 5EA and COAXIAL CABLE CONNETOR from PCB Remover 4 Point Screws From Main Ant ...

Page 212: ... 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 Disassemble H W ITEM Remove Main Ant and Cap Receiver Assy VT Cam Main Cam Motor Earjack Rf Cable Remove 2 Screws From Lower Fpcb ...

Page 214: ...T 214 Copyright 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 12 EXPLODEDVIEW REPLACEMENT PART LIST Thisdocumentisdraftversion sothecontentswillbeupdatedafterregisteringthefinalone ...

Search results

Summary of Contents for D686

Reviews:

Related manuals for D686

Brands by name

Popular brands

LG D686, Service Manual

Search results

Summary of Contents for D686

Reviews:

Related manuals for D686

Brands by name

Popular brands