LG LM-X120HM Service Manual Download Page 60

Page: 60 / 140

Only training and service purposes

LGE Internal Use Only

3. TROUBLE SHOOTING

3.5 GSM, WCDMA, LTE PART

Checking RF Signal PRX path(LTE_B28B)

Circuit Diagram

Main

bot

Checking Flow

Image

3.5.3 LTE RF PART

TP1

TP2

Check TP1

Change

U1513/R1513/L1531/R1530/

L1564/C1531/L1563/U1523

and

retest

conductive

Check TP2

START

Change

U1301

and

retest

Change

U1406/C1529/L1515/

U1511/L1516/L1558/L1557/

C3517/C1539

and

retest

U1701

U1513

U1511

Summary of Contents for LM-X120HM

Page 1: ...MODEL LM X120HM Internal Use Only MOBILE PHONE SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL Date June 2019 Issue 1 0 ...

Page 2: ... RF PART 3 5 2 WCDMA PART 3 5 3 LTE PART 3 6 Power 3 7 Charger 3 8 Audio Block 3 8 1 Audio receiver 3 8 2 Audio speaker 3 8 3 Audio Main Mic 3 8 4 Audio sub Mic 3 8 5 Audio Ear mic jack 3 8 6 FM Radio 3 9 Checking LCD Block 3 10 Checking Touch Block 3 11 Checking Compass sensor Block NO 3 12 Checking accel gyro Block 3 13 Checking proximity Block 3 14 Checking main camera Block 3 15 Checking front...

Page 3: ...ure caused by RF signals and Static electricity When using Magnetic tool for the Phone s SVC repair you should check affect the Electric parts according to effect of Magnet When fastening the screw be careful not to damage the head of screw and even product C Attention Boards which contain Electrostatic Sensitive Device ESD are indicated by the sign Following information is ESD handling Service pe...

Page 4: ... 1932 1988 WCDMA FDD4 1712 1753 2112 2153 WCDMA FDD5 826 847 871 892 WCDMA FDD8 882 913 927 958 EGSM 880 915 925 960 GSM850 824 849 869 894 DCS1800 1710 1785 1805 1880 PCS1900 1850 1910 1930 1990 LTE1 1920 1980 2110 2170 LTE2 1850 1910 1930 1990 LTE3 1710 1785 1805 1880 LTE4 1710 1755 2110 2155 LTE5 1920 1980 2110 2170 LTE7 2500 2570 2620 2690 LTE8 880 915 925 960 LTE17 704 716 734 746 LTE28 703 7...

Page 5: ... Battery 4 Battery 3 000mAh Typ Li Ion 2 890mAh Min 5 Chipset MT6739WW 2 0GHz Ouad core 1 5GHz Quad core 6 Memory 16GB EMMC 1GB LPDDR3 External Memory SD Card Up to 2TB 7 LCD Size 5 45 inch Display Type TFT Color 16 7M colors Resolution 480 V X 960 H 8 Touch Type 5 45 inch Capacitive type 9 Main Camera 8M Type CMOS image sensor Resolution 3264 H X 2448 V pixels Image Scaling Down 4 3 8 0MP 3264x24...

Page 6: ...s 10 Audio Receiver 12 X 06 X 2 0T Receiver Speaker 15 X 11 X 2 5T Speaker Format MP3 AAC MIDI EAAC OGG AMR 11 Bluetooth Standard Bluetooth 4 2 Effective Distance 10M Distance 0 m 10 m depend on environment 12 WLAN Standard IEEE 802 11 b g n Throughput Max 112Mbps Depend on environment 0 15m depend on environment 13 GPS type A GPS Glonass 6 ...

Page 7: ... Only 12 mA under DRX 7 15 mA under DRX 7 500 mA under Tx 10dBm LCD off GSM Only 12 mA under PP 5 15 mA under PP 5 500 mA under Lvl 5 LCD off LTE 12 mA under LTE 2 56S 15 mA under LTE 2 56s 500 mA under TX 10 dBm LCD off RSSI BAR GSM RSSI WCDMA RSSI LTE RSSI Comment BAR 4 3 85dBm 5dB 72dBm 3dB 92dBm 6dB 1 Call Connected CPIPH Level 3 3 2 LTE RSRP BAR 3 2 95dBm 4dB 80dBm 5dB 102dBm 5dB BAR 2 1 102d...

Page 8: ... 82 Level 15 73 77 Level 14 68 72 Level 13 63 67 Level 12 58 62 Level 11 53 57 Level 10 48 52 Level 9 43 47 Level 8 38 42 Level 7 33 37 Level 6 28 32 Level 5 23 27 Level 4 16 22 Level 3 13 15 Level 2 8 12 Level 1 3 7 Level 0 0 2 Low Battery Pop up 16 15 One Time popup No call There is no pop up until 5 if you delete pop up Critical Low battery pop up 6 5 One Time popup No call There is no pop up u...

Page 9: ...rding O app downloading Voice Command X X X X Answering machine X Memory User Memory O Total 16GB O Total User Memory 12GB w o MicroSD X MMS O Pictures Still Image Moving Image O MP3 Music Contents X Java Contents X Wallpaper X Ringtone O external memory microSD up to 32TB Camera Still Capture Memory O MicroSD Camera Module O 8M AF Auto Focus O Digital Zoom O 4x Capture Resolution O rear capture 3...

Page 10: ... depend on Application setting Audio Encode O AAC AMR NB Audio Decode O AMR Movie Recode O Recode Stop Pause Resume Movie Playback O Play Stop Pause Stream Format Mux O mp4 3gp mp4 normal 3gp mms Stream Format Demux O mp4 3gp mp4 normal 3gp mms Recoding Time O Real Time Recoding TV Out X Audio Multimedia Voice Codec O AMR 3gpp AAC AAC EAAC O MP3 WAV O WMA O Midi O Type 0 and 1 mid xmf mxmf RTTTL R...

Page 11: ... ROM But user can download in internet Flight Mode O Internet Browser WAP Windows Mobile 6 0 IE Mobile X version 2 0 X WML1 3 O XHTML1 1 O HTML4 01 Partially support HTML 5 Java MIDP X J2ME support X Game Contents X CLDC X Flash Flash Game X Streaming Service H 263 AAC AMR NB O H 263 Decoding 704 576 30fps 15Mbps MPEG4 AAC AMR NB O MPEG4 Decoding 1080p 30fps 20Mbps WMV9 X DRM OMA DRM O Forward Loc...

Page 12: ...arty Call Conference Call O Explicit Call Transfer O Network Automatic Network Selection O Manual Network Selection O Network Service Status O DTMF DTMF Signaling O DTMF Enable Disable X Audio Key Tone Volume O 16 Level Include Mute Ring Tone Volume O 16 Level Include Mute Ring Tone Pattern O ogg Ring Type Silent O Vibrator Ring Indicator Earpiece Volume O 16 Level Include Mute Mute O Cell Broadca...

Page 13: ...itle IM AIM Windows Live Yahoo Skype QQ Hangouts ICQ Jabber Custom Event Birthday Anniversary Other Custom Numeric Store and Recall O Alphabetic Store O Alphabetic Recall X Scroll by alphabetic or numeric order O Last Number Dialed O Last Number Missed O Last Number Received O Copy Move X Move not support Fixed Dial Number O Barred Dial Number X Service Dial Number X It depends on SIM card Email E...

Page 14: ...Forward Message O Extract Number from Message O Message Status O Message Unread Indicator O Settable Message Center Number O Reply Path and Validity X Visible and Audible Message Receive Alertin g O Voice Mail O Settable Voice Mail Center Number X Message Protocol X Message Overflow Indicator O Message Center Number O Help Menu X Multimedia Messaging Picture Attachable O Max bytes is it According ...

Page 15: ...ng X Status List X Help X Others Sound Contents Wallpaper X Screen Saver X Ringtones O Karaoke X Stutter Sound O Flip tone X Button tone O can be enable or disable button press sound Others X Calendar New Event O Edit Event O Agenda O Reminder O Google sync O Miscellaneous Function Development Test Facility O Field Test Facility X Display Software Version O IMEI O 06 Text Input Language O Predicti...

Page 16: ... PC Bridge supports backup and restore not sync Sync ML DS X DM X Game X Menu Quick Access Mode Profile O External Interface Electrical Man Machine Interface X Development and Test Facility X Handset Restore Factory Setting O Read Software Version O Battery Charging Mode O USB TA Charging USB TA Charging Security Emergency Call O Handset Lock O Security Code O SIM Lock O Key guard X Real Time Cloc...

Page 17: ...E SHOOTING The out put frequency 26MHz of XO X0801 is used as the reference one of MT6739 internal DCO 3 1 Checking XO Block Checking Flow Image Circuit Diagram TP1 X0801 START XO Circuit is OK Check next step Is it 26 MHz Check other XO signal path Change X0801 and Retest TP1 NO NO YES 3 1 Checking XO Block TP1 X0801 17 ...

Page 18: ...d two voltage sources 1 8V and 1 2V 3 2 Checking Transceiver DC Power Supply Circuit Block TP2 1 2V START Check next step The Problem may be Logic part Refer to Logic trouble shoot Check TP1 1 8V_RF is OK YES NO Check TP2 1 2V_RF is OK NO YES The Problem may be Logic part Refer to Logic trouble shoot Checking Flow Image Circuit Diagram TP1 1 8V TP1 1 8V TP2 1 2V 18 ...

Page 19: ... START YES The Problem may be Logic part Refer to Logic trouble shoot NO Check TP2 0 5V TP2 4 4V Check U0704 Physical Damage or soldering condition NO YES TP1 3 TROUBLE SHOOTING The PMIC MT6357 U0704 output voltages is used as the reference one of RF Device 3 3 Checking DC DC Block Checking Flow Image TP2 Circuit Diagram TP1 TP2 19 ...

Page 20: ...ing ASM Block 3 4 ASM Block Image Checking Flow Check TP1 TP2 High Level 3 0V TP1 4 6V 1 7V TP2 1 9V START YES Check Next step The Problem may be Logic part Refer to Logic trouble shoot NO Check U1513 physical Damage or soldering condition OK NOT GOOD Replace U1513 Circuit Diagram TP2 1 8V TP1 3 5V TP2 1 8V TP1 3 5V U1513 ASM GSM PA 20 ...

Page 21: ...ses LGE Internal Use Only 3 TROUBLE SHOOTING 3 5 GSM WCDMA LTE PART GSM RF Part support GSM850 900 1800 1900 with ASM PAM Transceiver component 3 5 1 GSM RF PART Checking Flow START Check OTA performance Check RF Conductive Check ASM Check RF path Check MT6177 Check other signal path 21 ...

Page 22: ... All right reserved Only training and service purposes LGE Internal Use Only 3 TROUBLE SHOOTING 3 5 GSM WCDMA LTE PART GSM850 900 1800 1900 Tx Rx Path 3 5 1 GSM RF PART GSM850 900 GSM18001900 RX GSM1 800 RX GSM1900 RX GSM900 RX GSM850 22 ...

Page 23: ...Internal Use Only 3 TROUBLE SHOOTING 3 5 GSM WCDMA LTE PART 3 5 1 GSM RF PART Image Checking Flow Circuit Diagram TP1 CON1501 Main Bot YES NO Check RF Conductive Change CON1501 and retest RF conductive Check Antenna path NO Check RF signal path START Checking RF signal path SW CON1501 CON1501 23 ...

Page 24: ...UBLE SHOOTING 3 5 GSM WCDMA LTE PART 3 5 1 GSM RF PART Checking Flow Image Circuit Diagram TP2 NO YES OK NOT GOOD Main Bot TP1 Check TP1 Change U1513 and retest RF conductive Check TP2 Change U1509 and Matching circuit retest START Change U1301 and retest U1301 U1509 U1513 TP1 TP2 Checking RF Signal RX path GSM850 24 ...

Page 25: ...GSM WCDMA LTE PART Circuit Diagram Main bot TP1 Check TP1 Change U1513 L1519 L1520 L1521 and retest RF conductive Check TP2 START Change U1301 and retest U1513 Checking Flow Image TP2 U1524 U1301 NO OK OK NO TP1 Change U1524 L1548 R1531 R1532 L1522 L1523 L1524 C1 512 and retest TP2 Checking RF Signal RX path GSM900 3 5 1 GSM RF PART 25 ...

Page 26: ...SM WCDMA LTE PART 3 5 1 GSM RF PART Circuit Diagram Main bot TP1 Check TP1 Change U1513 L1525 C1515 L1526 and retest RF conductive Check TP2 START Change U1301 and retest U1513 Checking Flow Image U1514 U1301 NO OK OK NO TP1 Change U1514 L1505 R1505 R1506 L1527 L1528 L1529 C1 518 and retest TP2 TP2 Checking RF Signal RX path GSM1800 26 ...

Page 27: ...NG 3 5 GSM WCDMA LTE PART 3 5 1 GSM RF PART Checking Flow Image Circuit Diagram TP2 TP2 Main bot TP1 Check TP1 Change U1513 L1536 C1521 L1537 and retest RF conductive Check TP2 Change U1516 L1538 C1522 L1539 C1523 and retest START Change U1301 and retest U1301 U1516 U1513 OK NO NO NO TP1 OK Checking RF Signal RX path GSM1900 27 ...

Page 28: ...l right reserved Only training and service purposes LGE Internal Use Only 3 TROUBLE SHOOTING 3 5 GSM WCDMA LTE PART GSM850 900 1800 1900 Tx 3 5 1 GSM RF PART 1 GSM850 GSM900 TX PATH 2 DCS1800 PCS1900 TX PATH 3 COMMON TX RX PATH Main Bot 28 ...

Page 29: ...ING 3 5 GSM WCDMA LTE PART 3 5 1 GSM RF PART Image Checking Flow Circuit Diagram TP3 1 8V Check other related RF path TP2 Vbat Main Bot NO YES TP1 3 4V 4 3V Check TP1 is it 3 4v 4 3v START Check TP3 is it 1 8V Check TP2 is it Vbat Rework R1543 TP1 2power Vbat 3 4V 4 3V YES YES NO TP1 TP2 Checking GSM PAM DC Power Circuit TP3 29 ...

Page 30: ... LGE Internal Use Only 3 TROUBLE SHOOTING 3 5 GSM WCDMA LTE PART 3 5 2WCDMA RF Part Checking Flow START Check OTA performance Check RF Conductive Check ASM Check PA RF path Check MT6177M Check other signal path WCDMA RF Part support WCDMA B1 2 4 5 8 with FEM PAM PA Transceiver component 30 ...

Page 31: ...ram Checking Flow Image 3 5 2 WCDMA PART Check TP1 Change U1513 L1532 C1541 L1530 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK Check TP3 NO NO Change U1521 C1481 L1451 C1480 and retest OK Change U1402 C1466 L1419 C1465 C1463and retest RF conductive Checking RF Signal TX path WCDMA LTE_B1 TP1 TP2 TP3 TP3 u1521 TP2 TP1 u1513 u1301 U1402 31 ...

Page 32: ...TE PART 3 5 2WCDMA PART Circuit Diagram Main bot U1513 Checking Flow Image U1521 U1301 TP1 TP2 Check TP1 Change U1513 L1530 C1514 L1532 and retest RF conductive START Change U1301 and retest NO OK Check TP2 NO OK Change U1521 L1547 R1527 R1528 L1533 L1534 L1535 C1516 and retest RF conductive TP2 TP1 Checking RF Signal PRX path WCDMA_B1 LTE _B1 32 ...

Page 33: ...ING 3 5 GSM WCDMA LTE PART 3 5 2 WCDMA PART Circuit Diagram TP1 Check TP1 Change U1606 L1624 C1612 L1626 and retest RF conductive START Change U1301 and retest U1301 Checking Flow Image TP2 U1606 U1605 NO OK OK Check TP4 NO Change U1605 L1621 C1610 L1625 C1611 and retest TP1 TP2 Checking RF Signal DRX path WCDMA LTE_B1 4 66 33 ...

Page 34: ...ram Checking Flow Image 3 5 2 WCDMA PART Check TP1 Change U1513 L1536 C1521 L1537 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK Check TP3 NO NO Change U1516 C1413 L1405 C1414 and retest OK Change U1402 C1466 L1419 C1465 C1463and retest RF conductive Checking RF Signal TX path WCDMA LTE_B2 TP3 TP1 TP2 TP3 U1516 TP1 u1513 u1301 TP2 U1402 34 ...

Page 35: ...ronics Inc All right reserved Only training and service purposes LGE Internal Use Only 3 TROUBLE SHOOTING 3 5 GSM WCDMA LTE PART Checking RF Signal PRX path WCDMA LTE_B2 is same as RF Signal RX path GSM1900 3 5 2 WCDMA PART 35 ...

Page 36: ...OOTING 3 5 GSM WCDMA LTE PART 3 5 2 WCDMA PART Circuit Diagram TP1 Check TP1 Change U1606 L1624 C1612 L1626 and retest RF conductive START Change U1301 and retest Checking Flow Image NO OK OK Check TP4 NO Change U1605 L1622 C1608 L1623 C1609 and retest TP1 TP2 U1301 TP2 U1606 U1605 Checking RF Signal DRX path WCDMA LTE_B2 36 ...

Page 37: ...ram Checking Flow Image 3 5 2 WCDMA PART Check TP1 Change U1513 L1561 L1559 L1560 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK Check TP3 NO NO Change U1502 L1409 L1410 L1411 and retest OK Change U1402 C1466 L1419 C1465 C1463and retest RF conductive Checking RF Signal TX path WCDMA LTE_B4 TP3 TP2 TP1 TP3 U1502 TP1 u1513 u1301 TP2 u1402 37 ...

Page 38: ...G 3 5 GSM WCDMA LTE PART Checking RF Signal PRX path WCDMA LTE_B4 3 5 2 WCDMA PART Circuit Diagram Main bot TP1 Check TP1 Change U1513 L1561 L1559 L1560 and retest RF conductive Check TP2 START Change U1301 and retest U1502 U1513 Checking Flow Image TP2 U1301 NO OK OK NO TP2 TP1 Change U1502 L1566 L1562 L1565 C1538 and retest 38 ...

Page 39: ...ics Inc All right reserved Only training and service purposes LGE Internal Use Only 3 TROUBLE SHOOTING 3 5 GSM WCDMA LTE PART Checking RF Signal DRX path WCDMA LTE_B4 is same as DRF Signal RX path WCDMA LTE_B1 3 5 2 WCDMA PART 39 ...

Page 40: ...agram Checking Flow Image 3 5 2 WCDMA PART Checking RF Signal TX path WCDMA LTE_B5 TP3 TP2 TP1 Check TP1 Change U1513 L1517 C1510 L1513 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK Check TP3 NO NO Change U1509 L1425 C1409 L1401 C1410 and retest OK Change U1402 C1430 R1401 R1402 C1467 and retest RF conductive U1402 U1301 U1509 U1513 40 ...

Page 41: ...tronics Inc All right reserved Only training and service purposes LGE Internal Use Only 3 TROUBLE SHOOTING 3 5 GSM WCDMA LTE PART Checking RF Signal PRX path WCDMA LTE_B5 is same as RF Signal RX path GSM850 3 5 2 WCDMA PART 41 ...

Page 42: ... SHOOTING 3 5 GSM WCDMA LTE PART Checking RF Signal DRX path WCDMA LTE_B5 3 5 2 WCDMA PART Circuit Diagram Check TP1 Change U1606 L1644 L1605 and retest RF conductive START Change U1301 and retest Checking Flow Image NO OK OK Check TP2 NO Change U1608 L1608 L1609 L1610 C1601 and retest TP1 TP2 TP1 U1301 TP2 U1606 U1608 42 ...

Page 43: ...ignal TX path WCDMA LTE_B8 Circuit Diagram TP2 Checking Flow Image U1524 TP1 3 5 2 WCDMA PART Check TP1 Change U1513 L1519 L1520 L1521 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK Check TP3 NO NO Change U1524 C1411 L1402 C1412 and retest OK Change U1402 C1430 R1401 R1402 C1467 and retest RF conductive TP1 TP2 U1301 u1513 U1402 TP3 TP3 43 ...

Page 44: ...tronics Inc All right reserved Only training and service purposes LGE Internal Use Only 3 TROUBLE SHOOTING 3 5 GSM WCDMA LTE PART Checking RF Signal PRX path WCDMA LTE_B8 is same as RF Signal RX path GSM900 3 5 2 WCDMA PART 44 ...

Page 45: ...DRX LTE RF Part support LTE B1 2 3 4 5 7 8 17 28 66 with FEM PAM PA Transceiver component Checking Flow Image Circuit Diagram TP1 U1301 NO OK NO OK Main Bot TP1 Check TP1 Change U1606 L1612 C1626 L1614 and retest RF conductive START Change U1301 and retest U1606 U1612 Check TP2 Change U1609 L1629 L1645 and retest Check TP3 Change U1609 L1631 L1630 L1632 L1613 and retest OK NO TP3 TP2 TP2 TP3 45 ...

Page 46: ...right ⓒ 2019 LG Electronics Inc All right reserved Only training and service purposes LGE Internal Use Only 3 TROUBLE SHOOTING 3 5 GSM WCDMA LTE PART WCDMA DRX PATH 3 5 WCDMA PART 1 WCDMA COMMON DRX PATH 46 ...

Page 47: ...ignal TX path LTE_B3 Circuit Diagram TP3 Main bot TP2 U1513 U1301 Checking Flow Image U1402 U1514 TP1 3 5 3 LTE PART Check TP1 Change U1513 L1525 C1515 L1526 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK Check TP3 NO NO Change U1514 C1415 L1540 C1416 and retest OK Change U1402 C1466 L1419 C1465 C1463 and retest RF conductive TP3 TP1 TP2 47 ...

Page 48: ...ronics Inc All right reserved Only training and service purposes LGE Internal Use Only 3 TROUBLE SHOOTING 3 5 GSM WCDMA LTE PART Checking Flow Image 3 5 3 LTE RF PART LTE RF Part B3 PRX The same as RF Signal RX path GSM1800 48 ...

Page 49: ...BLE SHOOTING 3 5 GSM WCDMA LTE PART LTE RF Part B3 DRX Circuit Diagram TP2 Main bot U1301 Checking Flow Image U1605 U1606 TP1 3 5 3 LTE RF PART TP1 TP2 Check TP1 Change U1606 L1624 C1612 L1626 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK NO Change U1605 L1622 C1608 L1623 C1609 and retest 49 ...

Page 50: ...ignal TX path LTE_B7 Circuit Diagram TP3 Main bot TP2 U1513 U1301 Checking Flow Image U1402 U1515 3 5 3 LTE PART Check TP1 Change U1513 L1550 C1519 L1544 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK Check TP3 NO NO Change U1515 C1408 L1407 C1407 and retest OK Change U1402 C1461 R1405 C1460 C1476 and retest RF conductive TP1 TP2 TP3 TP1 50 ...

Page 51: ...NG 3 5 GSM WCDMA LTE PART LTE RF Part B7 PRX Circuit Diagram TP2 Main bot U1513 Checking Flow Image U1515 U1301 TP1 3 5 3 LTE RF PART TP1 TP2 Check TP1 Change U1513 L1550 C1519 L1544 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK NO Change U1515 L1508 R1508 R1509 L1518 C1517 L1549 C 1525 and retest 51 ...

Page 52: ...ROUBLE SHOOTING 3 5 GSM WCDMA LTE PART LTE RF Part B7 DRX Circuit Diagram TP2 Main bot U1301 Checking Flow Image U1605 U1606 TP1 3 5 3 LTE RF PART TP1 TP2 Check TP1 Change U1606 C1602 L1606 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK NO Change U1602 L1638 C1617 L1639 C1616 and retest 52 ...

Page 53: ...Circuit Diagram TP3 TP2 TP3 U1512 U1513 Checking Flow Image U1402 TP1 Check TP1 Change U1513 L1511 C1511 L1570 C1540 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK Check TP3 NO NO Change U1512 L1540 C1520 L1541 and retest OK Change U1402 C1448 L1418 L1426 and retest RF conductive 3 5 3 LTE RF PART LTE RF Part B17 TX TP2 TP1 53 ...

Page 54: ... 3 5 GSM WCDMA LTE PART Checking Flow Image Circuit Diagram TP1 TP2 TP2 NO OK NO OK Main Bot TP1 Check TP1 Change U1513 L1540 C1520 L1541 and retest RF conductive Check TP2 Change U1512 L1551 R1511 R1512 C1501 C1502and Matching circuit retest START Change U1701 and retest U1701 U1523 U1513 3 5 3 LTE RF PART LTE RF Part B17 PRX 54 ...

Page 55: ...SHOOTING 3 5 GSM WCDMA LTE PART LTE RF Part B17 DRX Circuit Diagram TP2 Main bot U1301 Checking Flow Image U1611 U1606 TP1 3 5 3 LTE RF PART TP1 TP2 Check TP1 Change U1606 L1602 R1604 L1615 L1616 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK NO Change U1611 L1618 L1642 L1643 C1603 and retest 55 ...

Page 56: ...F Signal TX path LTE_B28A Circuit Diagram Main bot Checking Flow Image 3 5 3 LTE RF PART TP1 TP2 TP3 Check TP1 Change U1513 L1554 C1532 L1553 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK Check TP3 NO NO Change U1406 C1428 L1482 C1429 and retest OK Change U1402 C1430 R1401 R1402 C1467 and retest RF conductive U1402 U1701 U1513 U1522 56 ...

Page 57: ...GSM WCDMA LTE PART Checking RF Signal PRX path LTE_B28A Circuit Diagram Main bot Checking Flow Image 3 5 3 LTE RF PART TP1 TP2 Check TP1 Change U1513 L1554 C1532 L1553 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK NO Change U1406 C1536 L1556 U1511 L1516 L1558 L1557 C3517 C1539 and retest U1701 U1513 U1522 57 ...

Page 58: ...LTE RF Part B28 DRX Circuit Diagram Main bot Checking Flow Image 3 5 3 LTE RF PART TP1 TP2 Check TP1 Change U1606 L1601 L1640 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK NO Change U1612 L1603 C1604 L1607 C1631 and retest 3 5 GSM WCDMA LTE PART 3 TROUBLE SHOOTING U1701 U1606 U1612 58 ...

Page 59: ...path LTE_B28B Circuit Diagram Main bot Checking Flow Image 3 5 3 LTE RF PART TP1 TP2 TP3 Check TP1 Change U1513 R1513 L1531 R1530 L1564 C1531 L1563 U1523 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK Check TP3 NO NO Change U1402 C1425 L1480 C1426 and retest OK Change C1430 R1401 R1402 C1467 and retest RF conductive U1402 U1701 U1513 U1606 U1523 59 ...

Page 60: ...E PART Checking RF Signal PRX path LTE_B28B Circuit Diagram Main bot Checking Flow Image 3 5 3 LTE RF PART TP1 TP2 Check TP1 Change U1513 R1513 L1531 R1530 L1564 C1531 L1563 U1523 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK NO Change U1406 C1529 L1515 U1511 L1516 L1558 L1557 C3517 C1539 and retest U1701 U1513 U1511 60 ...

Page 61: ...LTE RF Part B28 DRX Circuit Diagram Main bot Checking Flow Image 3 5 3 LTE RF PART TP1 TP2 Check TP1 Change U1606 L1601 L1640 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK NO Change U1612 L1603 C1604 L1607 C1631 and retest 3 5 GSM WCDMA LTE PART 3 TROUBLE SHOOTING U1701 U1606 U1612 61 ...

Page 62: ...ram Checking Flow Image 3 5 3 LTE PART Check TP1 Change U1513 L1561 L1559 L1560 and retest RF conductive Check TP2 START Change U1301 and retest NO OK OK Check TP3 NO NO Change U1502 L1409 L1410 L141 1 and retest OK Change U1402 C1466 L1419 C1465 C1463and retest RF conductive Checking RF Signal TX path WCDMA LTE_B4 TP3 TP2 TP1 TP3 U1502 TP1 u1513 u1301 TP2 u1402 62 ...

Page 63: ...NG 3 5 GSM WCDMA LTE PART Checking RF Signal PRX path WCDMA LTE_B4 3 5 3 LTE PART Circuit Diagram Main bot TP1 Check TP1 Change U1513 L1561 L1559 L1560 and retest RF conductive Check TP2 START Change U1301 and retest U1502 U1513 Checking Flow Image TP2 U1301 NO OK OK NO TP2 TP1 Change U1502 L1566 L1562 L1565 C1538 and retest 63 ...

Page 64: ...TING 3 5 GSM WCDMA LTE PART 3 5 3 LTE PART Circuit Diagram TP1 Check TP1 Change U1606 L1624 C1612 L1626 and retest RF conductive START Change U1301 and retest U1301 Checking Flow Image TP2 U1606 U1605 NO OK OK Check TP4 NO Change U1605 L1621 C1610 L162 5 C1611 and retest TP1 TP2 Checking RF Signal DRX path WCDMA LTE_B1 4 66 64 ...

Page 65: ...l right reserved Only training and service purposes LGE Internal Use Only 3 TROUBLE SHOOTING 3 6 Power TP2 J0902 Checking Power signal Battery connector Power Key PMIC Regulator TP1 J1209 TP4 L0701 TP7 L0705 TP3 X0801 TP5 L0702 TP6 L0703 65 ...

Page 66: ... Change the Charging IC U0701 Yes Yes The I O connector and USB cable voltage 5 0V is used as the reference one of PMIC for charging I O connector J0102 START Connection OK Check the Connection of uUSB and battery Change I O connector or BTB Change TA or uUSB Cable END END END Is the uUSB Cable voltage 5V Is it charging properly After turning on Charging IC U0701 Charging BTB CON1202 Charging BTB ...

Page 67: ...ceiver The receiver control signal is generated by MT6357 U0701 the chipset and the receiver should be checked Checking Flow Start Check the Receiver And reconnect RCV module Hear the Voice through the RCV Change damaged contact pad Yes No Yes Change Main Board End Change RCV Module Yes No Contact pad REC0901 No Placement Circuit Diagram TOP 67 ...

Page 68: ...speaker BOT Checking Flow Start Check the Speaker And reconnect SPK module Hear the Voice through the SPK Change damaged contact pin No Yes Change Main Board End Change SPK Module Yes No Contact pin J0104 J0105 The speaker control signal is generated by MT6357 U0701 the chipset and the speaker should be checked No Circuit Diagram Placement 68 ...

Page 69: ...UBLE SHOOTING 3 8 3 Audio Main Mic Checking Flow Start Check the MIC filter And reconnect PCB Hear the Voice through the RCV in loopback test Change MIC No No Yes Change Main Board End Yes It s operating voice call except speakerphone voice recording camcorder recording BOT Circuit Diagram Placement Main Mic U0101 69 ...

Page 70: ...ernal Use Only 3 TROUBLE SHOOTING 3 8 4 Audio sub Mic Checking Flow Start Check the MIC filter And reconnect PCB Hear the Voice through the SPK in 2mic loopback test Change MIC No No Yes Change Main Board End Yes Yes It s operating Speakerphone call Circuit Diagram Placement Sub Mic MIC0901 BOT 70 ...

Page 71: ... 3 8 5 Audio Ear mic jack Disable detecting headset insert or No sound from Earphone Check the Connector and Main PCB Checking Flow Start Check the Headset Icon And reconnect EARJACK FPCB Hear the Voice through the Headset Change Earjack Connector No No Yes Change Main Board End Yes Circuit Diagram Earjack CON0901 Placement Top 71 ...

Page 72: ...Only training and service purposes LGE Internal Use Only 3 TROUBLE SHOOTING 3 8 6 FM Radio It s operating FM Radio Checking Flow Start Hear the FM through the Headset Check the L1707 No No Yes Change Main Board End Yes Circuit Diagram L1707 Placement BOT 72 ...

Page 73: ...t Press Power key to turn the Power on Is the circuit powered No Follow the power troubleshooting YES Disconnect and reconnect LCD Connector CON1202 and check the connector LCD Display OK YES NO TP1 3 is OK YES Change the LCD module LCD Display OK Change the main board NO END YES 3 9 Checking LCD Block NO LCD Connector OK YES NO PCB Image CON1202 BOT TP2 TP1 TP3 BOT LCD Parts on the main board 73 ...

Page 74: ... LG Electronics Inc All right reserved Only training and service purposes LGE Internal Use Only 3 TROUBLE SHOOTING Circuit Diagram TP2 TP3 TP1 3 9 Checking LCD Block Main LCD control signals are generated by MT6739 74 ...

Page 75: ...board Touch control signals are generated by MT6739 PCB Image Start Disconnect and reconnect LCD connector CON1202 Touch operates well YES No Check power TP1 OK YES Touch Reset TP2 Touch I2C TP4 5 OK NO Change LCD Module Does it works Change the Main SUB Board NO END YES No TP2 TP4 TP3 TP1 TP5 Checking Flow CON1202 3 10 Checking Touch Block BOT YES TOP 75 ...

Page 76: ...ining and service purposes LGE Internal Use Only 3 TROUBLE SHOOTING Circuit Diagram Main Board TP2 TP1 TP3 TP4 TP5 Touch Parts on the main board Touch control signals are generated by MT6739 3 10 Checking Touch Block Circuit Diagram SUB Board TP1 TP2 TP3 TP4 TP5 76 ...

Page 77: ...SHOOTING The acc sensors are calibrated by using SW algorithm 3 12 Checking accelerometer sensor Block Circuit Diagram Image Checking Flow Start Check the sensor function Function is OK Calibration OK Change the Sensor IC U1004 END Yes END Yes No No Function is OK END Yes Function is OK Change the main board No END Yes 77 ...

Page 78: ...Call connected Object moved at the sensor Control the screen s on off operation automatically 3 13 Checking proximity sensor Block Circuit Diagram Image Checking Flow sensor Power R1012 Power R1012 Start Send Key click Phone number click Call connected LCD off END Yes No END Yes Function is OK Change the main board No Object moved at the Proximity sensor Output work well Check power R1012 END Yes ...

Page 79: ...g main camera Block When 8M Rear Camera doesn t work check CON1101 and TP Voltage TP3 1 2V TP2 1 8V TP1 2 8V TP4 2 8V TP5 MCLK No Camera Connector CON1101 connected Camera is OK END Replace Camera Module No Yes Check MCLK TP5 is OK Yes No Yes Camera is OK Replace Main PCB No Yes START CON1101 TP5 MCLK TP1 2 8V TP2 1 8V TP4 2 8V TP3 1 2V BOT Checking Flow Image Circuit Diagram 79 ...

Page 80: ... When 5M Front camera is not working check CON1102 and TP Voltage No Camera Connector CON1102 connected Camera is OK END TP1 2 8V TP2 1 8V TP3 1 2V Replace Camera Module No Yes Check MCLK TP4 is OK Yes No Yes Camera is OK Replace Main PCB No Yes TP1 2 8V TP3 1 2V TP2 1 8V TP4 START TP4 TP3 1 2V TP2 1 8V TP1 2 8V CON1102 Checking Flow Circuit Diagram Image TOP 80 ...

Page 81: ...OUBLE SHOOTING 3 16 Checking Motor Block Motor is not working Checking Flow START Motor Contact is normal Yes No Yes Motor Driver IC power VPWR TP1 No Replace Motor Check Motor Contact J0106 J0107 Check R0132 VIBR_PMU Main PCB Circuit Diagram Circuit Diagram Placement Sub BOT Contact pad J0106 J0107 R0132 VIBR_PMU 81 ...

Page 82: ...mage 3 17 1 Checking Connectivity DC Power 3 17 BT Wi Fi GPS PART Main Top Check TP1 Supply voltage OK NO YES YES Check TP2 Supply voltage OK Check Nest step Re solder or change PMU Check TP2 Supply voltage OK 3 17 Checking BT Wi Fi GPS block TP2 1 8V TP3 1 3V TP1 3 3V START YES NO Re solder or change PMU NO Re solder or change PMU TP1 3 3V TP3 1 3V TP2 1 8V 82 ...

Page 83: ...nly training and service purposes LGE Internal Use Only 3 TROUBLE SHOOTING BT WIFI GPS Signal Path 3 17 2 BT WIFI GPS Trouble Shooting 3 17 BT Wi Fi GPS PART 3 17 Checking BT Wi Fi GPS block 2 4G GPS Diplexer 2 4G SAW GPS SAW GPS LNA Main Bot ANT Main Top 83 ...

Page 85: ...LCD B L DRIVER MIC_1 MIC_2 Speaker Receiver Ear Jack PMIC MT6357 DIP WIFI_IQ BT_SSBI WLAN_DATA USB 1 2A DC motor BT WiFi MT6625L SPI EBI AU_VIN0_P N AU_VIN2_P N AU_VIN1_P N AU_HS_P N AU_LOL_P N WIFI GPS RESET SPI BB CLK MIPI_CSI 4 lane MIPI_CSI 2 lane OVP VIBR PWRKEY USB_IN USB_DP DM WIFI FILTER FLASH DRIVER FLASH GPIO AMP GPS LNA GPS FILTER 26Mhz XO 5 45 FWVGA 480 960 TF SIM Nano COMBO SIM1 SIM2 ...

Page 86: ... VRF12_PMU DVDD_DVFS VSRAM_PROC_PMU Proximity ALS Accel sensor VIO28_PMU VEFUSE_PMU FUOURCE_P Micro SD VUSB33_PMU Nano SIM2 VBAT SPDT VPA_PMU LNA ANT TUNNER MMPA VC7643 ASM DVDD_DVFR VMC VMC_PMU XTAL_26MHz VBAT_CORE VBAT_L1 3 VMCH_PMU DVDD_MODEML1 DVDD DVDD_CORE VBAT VLDO28_PMU DVDD LDO 1V2_CAM_DVD D VIO18_PMU VRF18 VRF12 VMCH 1V8_CAM_IOVDD VLDO28 CAMERA AVDD VEFUSE VCORE VSRAM_OTHERS VSRAM_PROC V...

Page 87: ...PX DPX DPX DPX DPX DPX B4 B66 TRX B5 TRX B7 TRX B8 TRX B17 B20 TRX B28A TRX B28B TRX SAW SAW B40 TRX B41 TRX B1 TX B2 TX B3 TX B4 B66 TX B5 TX B7 TX B8 TX B17 B20 TX B28A TX B28B TX B40 TRX B41 TRX LNA SAW LNA SAW LNA SAW PRX B40 B41 PRX B28A B28B PRX B17 B20 PRX B8 PRX B7 PRX B5 PRX B4 B66 PRX B3 PRX B2 PRX B1 DRX B1 B4 B66 DRX B2 B3 DRX B3 B40 DRX B5 DRX B7 DRX B8 DRX B17 B20 DRX B28 DRX B38 B41...

Page 88: ... SDCARD_CLK SDCARD_DET SIM2_RESET_N SIM2_RESET SIM2_DATA VCC VREFCA SIM2_DATA Micro SD SIM1 Nano SIM2 Nano EINT15 MT6739 VEMC_PMU VIO18_PMU VDRAM_PMU VREF_EMI VDDQ VCCQ VDD1 VDD2 VSIM2_PMU SIM2_CLK SIM2_CLK EBI_CS_N EBI_CK EBI_DQS EBI_CA 0 9 CS_N NC2 CLK_T CLK_C CKE NC3 DQS 0 3 _T DQS 0 3 _C CA 0 9 EBI_CA 0 9 EBI_CS 0 1 EBI_CLK CLK_B CKE_0 CKE_1 EBI_DQS 0 3 DQS_B 0 3 EBI_DM 0 3 EBI_DQ 0 31 EBI_DAT...

Page 89: ... VIO18_PMU DISP_PWM VLDO28_PMU LCD_LED_K VBAT LCD_RESET_N LCM_RST LCD_MAKER_ID TOUCH_I2C_SCL TOUCH_I2C_SDA LCD_MIPI_DATA 0 1 _P LCD_MIPI_DATA 0 1 _N LCD_MIPI_CLK_P LCD_MIPI_CLK_N TOUCH_INT EINT6 I2C0_SCL I2C0_SDA VLDO28_PMU VIO18_PMU VLDO28 VIO18 LCM_ID MIPI_DSI_LN 0 3 _P MIPI_DSI_LN 0 3 _N MIPI_DSI0_CLK_P MIPI_DSI0_CLK_N Backlight Driver KP2ROW TOUCH_RESET KP2COL EINT12 DISP_PWM I2C0_SDA I2C0_SCL...

Page 90: ... 0 3 _P CAM_MIPI_DATA 0 3 _N VT_CAM_MCLK CAM_CLK0 CMMCLK1 I2C2_SCL I2C2_SDA CAM_RST0 I2S1_LRCK UART1RX VLDO28_PMU CAM_DVDD_EN VCAM_IO_PMU VCAMA_PMU AVDD VCAMA VCAMIO UART1TX CMMCLK0 MIPI_CSI0_CLK_P MIPI_CSI0_CLK_N VLDO28 VS1_PMU CAM_MIPI_DATA 0 1 _P CAM_MIPI_DATA 0 1 _N CAM_MIPI_CLK_P CAM_MIPI_CLK_N I2S1_MCK VCAMD 2 8V LDO VBAT CAM_AVDD_EN 1V2_CAM_DVDD 2V8_CAM_AVDD VCAMD_PMU DVDD 0OHM 0OHM I2S1_BC...

Page 91: ..._SCL ACCEL_INT I2C1_SDA I2C1_SCL EINT7 PMIC MT6357 VIO18_PMU System Logic Block Diagram SENSOR MOTOR VIBR DC Motor VIBR_PMU EINT13 EINT2 SPI1_MI SPI1_CS SPI1_MO SPI1_CK FLASH DRIVER VBAT GPIO_FLASH_EN GPIO_FLASH_STROBE I2S0_BCK I2S0_LRCK 91 ...

Page 92: ... AU_VIN0_N AU_VIN0_P MIC_BIAS_0 MIC_IN1_N MIC_IN1_P AU_VIN2_N AU_VIN2_P MIC_BIAS_1 MIC_IN3_N MIC_IN3_P SPK_R SPK_L S W_DETECT MIC GND AU_HPR AU_HPL HP_EINT AU_VIN1_N AU_VIN1_P EAR_MIC_JCK_OUT MT6739 AUD_CLK_MISO AUD_DAT_MISO0 AUD_DAT_MISO1 AUD_SYNC_MISO AUD_CLK_MOSI AUD_DAT_MOSI0 AUD_DAT_MOSI1 AUD_SYNC_MOSI Exteral Audio PA I2S0_DATA_IN AUD_CLK_MISO AUD_DAT_MISO0 AUD_DAT_MISO1 AUD_SYNC_MISO AUD_CL...

Page 93: ...WLAN_BB_QP QM WLAN_I_P N WLAN_Q_P N WL_BB_IP IM WL_BB_QP QM 2 4G Filter WL_BT_RFIO_2P4G HRST_B SCLK CONN_RSTB CONN_SCLK WB_RSTB WB_SCLK CONN_SDATA CONN_SEN GPS_RX_I_P N WB_SDATA WB_SEN GPS_RXI SDATA SEN GPS_RX_I GPS_RX_Q_P N CONN_XO_IN GPS_RXQ XIN_WBG GPS_RX_Q XO_IN MT6357 DCXO PMIC_CLK_WCN Diplexer WL_BT_RF GPS RF GPS LNA GPS FILTER GPS_RFIN GPS_IN 93 ...

Page 94: ...R 3 Axis Accelerometer Main Camera FRONT Camera 8M 5M CTP TOUCH MCU Pull up VIO18_PMU Pull up VIO18_PMU COMMON_I2C Pull up VIO18_PMU I2C0_SCL SDA Pull up VIO18_PMU Appendix I2C Flow LCM PANEL BIAS LCM BIAS POWER A PS SENSOR ALS PS IR SENSOR Pull up VIO18_PMU SENSOR_I2C Pull up VIO18_PMU I2C1_SCL SDA I2C2_SCL SDA I2C3_SCL SDA 94 ...

Page 96: ...F SH0301 1 2 R0311 1 5K CSI DSI I2S SPI MT6739 SBS U5 RCP V4 RCN W3 RDN0 W4 RDP0 W2 RDP1 W1 RDN1 U4 RDP2 U3 RDN2 U2 RDP3 V2 RDN3 P3 RCP_A R3 RCN_A R5 RDP0_A R6 RDN0_A R4 RDP1_A P4 RDN1_A T27 TCP U27 TCN T26 TDP0 T25 TDN0 U29 TDP1 U28 TDN1 V28 TDP2 W28 TDN2 U26 TDP3 U25 TDN3 AB23 LCM_RST AB24 DSI_TE AE25 I2S0_BCK P2 RDP2_A R2 RDN2_A T2 RDP3_A T1 RDN3_A AE1 SPI0_CS AD2 SPI0_MI AE26 I2S0_LRCK AG26 I2...

Page 97: ...D_MODEML1_BUCK W15 DVDD_MODEML1_BUCK Y12 DVDD_MODEML1_BUCK Y14 DVDD_MODEML1_BUCK AA9 DVDD_MODEML1_BUCK T14 DVDD_MODEML1_BUCK U9 DVDD_MODEML1_BUCK U15 DVDD_MODEML1_BUCK R15 DVDD_MODEML1_BUCK T12 DVDD_MODEML1_BUCK P12 DVDD_MODEML1_BUCK P14 DVDD_MODEML1_BUCK V18 DVDD_DVFS_SRAM K16 DVDD_SRAM_TOP M16 DVDD_SRAM_TOP T16 DVDD_SRAM_TOP V16 DVDD_SRAM_TOP J11 DVSS J13 DVSS J21 DVSS K10 DVSS K18 DVSS K20 DVSS...

Page 98: ...N1 DVDD18_IORT AC14 AVSS18_MD AC15 AVSS18_MD F29 DVDD18_MC0 AB29 DVDD18_MC1 H5 AVSS18_WBG H6 AVSS18_WBG AF16 AVSS18_MD AF19 AVSS18_MD AF29 DVDD18_IR AE29 DVDD28_IR_DVDD18_EINT M28 AVSS33_USB R11 DVSS R13 DVSS R21 DVSS T10 DVSS U11 DVSS U13 DVSS U17 DVSS U19 DVSS U21 DVSS U23 DVSS V10 DVSS V22 DVSS W11 DVSS W13 DVSS W17 DVSS Y10 DVSS Y18 DVSS Y20 DVSS Y22 DVSS AA11 DVSS AG28 DVDD18_IOBL AF22 DVSS H...

Page 99: ...C0621 4 7uF 1 2 C0626 1 0uF MT6739 eMCP_LP3 EMI_IF A24 EMI0_DQ31 B24 EMI0_DQ30 B25 EMI0_DQ29 B23 EMI0_DQ28 B22 EMI0_DQ27 A23 EMI0_DQ26 B21 EMI0_DQ25 C24 EMI0_DQ24 C10 EMI0_DQ23 A12 EMI0_DQ22 B9 EMI0_DQ21 B12 EMI0_DQ20 B11 EMI0_DQ19 A9 EMI0_DQ18 A11 EMI0_DQ17 B10 EMI0_DQ16 A21 EMI0_DQ15 A20 EMI0_DQ14 B20 EMI0_DQ13 B18 EMI0_DQ12 B19 EMI0_DQ11 C20 EMI0_DQ10 A18 EMI0_DQ9 A17 EMI0_DQ8 B17 EMI0_DQ7 B16 ...

Page 100: ... 2 SH0702 1 2 C0703 10uF 1 2 L0705 1 0uH 1 2 SH0706 1 2 L07031 0uH 1 2 VR0701 NF_PTVSHC3D4V5U 1 2 C0761 4 7uF 1 2 C0753 0 1uF 1 2 C0718 1 0uF NF 1 2 C0732 1 0uF 1 2 C0723 4 7uF 1 2 C0733 1 0uF 1 2 C0744 4 7uF 1 2 C0729 1 0uF NF 1 2 C0756 2 2uF 1 2 C0770 1 0uF 1 2 C0736 1 0uF 1 2 C0738 1 0uF 1 2 C0759 4 7uF 1 2 C0724 22uF 1 2 C0737 1 0uF NF 1 2 C0748 1 0uF NF 1 2 C0726 1 0uF 1 2 C0757 2 2uF 1 2 C07...

Page 101: ...18_AUXADC L12 ISINK1 R10 CS_N T10 CS_P R1 AVSS22_XOBUF N2 AVSS22_XO_ISO P2 AVSS22_XO_ISO N5 EXT_PMIC_EN2 T2 XO_EXT U0701 C MT6357V A 1 2 R0804 1 5K 1 2 C0810 NF 1 2 C0808 5 0pF NF 1 2 C0804 0 1uF 1 2 R0824 3 3K 1 1 2 R0835 100K 1 2 C0806 0 1uF 1 2 C0801 0 1uF 1 2 R0802 200K 1 2 R0822 330K 1 2 C0807 1 0uF 1 2 R0812 0 1 2 C0813 1 0uF 4 SENSOR 1 HOT 3 HOT 2 GND X0801 1 2 R0814 0 1 2 R0816 0 1 2 C0817...

Page 102: ...7 NF_33PF 1 2 C0926 1000PF SH0915 SH0916 SH0917 SH0918 SH0919 SH0920 SH0921 SH0904 C0929 0 1uF C0928 4 7uF C0927 2 2uF C0904 4 7uF 1 2 C0906 220PF 1 2 C0905 0 047UF 1 2 C0907 0 047UF R0913 3K C0901 2 2uF R0905 3K C0913 100PF SH0910 R0916 1K TVS0909 PSED3V3V1BCSF SH0909 1 TP0906 TP 1 3MM 1 TP0907 TP 1 3MM C0915 R0917 0 01 R0915 16 9K 1 TP0911 TP 1 3MM 1 TP0908 TP 1 3MM D2 C1P C1 C1N D1 C2P B1 C2N A...

Page 103: ... 2uF R1007 10K C1014 0 1uF C1010 1 0uF R1012 22 1 SDA 2 INTB 3 NA 4 NA 5 LEDA 6 GND 7 SCL 8 VDD U1001 MN66238LKDNJA R1009 10K 1 SDO 2 SDX 3 VDDIO 4 NC 5 INT1 6 INT2 7 VDD 8 GNDIO 9 GND 10 CSB 11 PS 12 SCX U1004 MC3416 P TVS1002 TVS1003 TVS1001 VIO18_PMU SCL1 4 10 11 SDA1 4 10 11 GND GND GND GND EINT_G 4 GND GND SDA1 4 10 11 SCL1 4 10 11 GND VIO18_PMU EINT_ALSPS 4 GND GND VIO28_PMU VIO18_PMU VSYS V...

Page 104: ... 5MM 1 TP1116 TP 0 5MM 1 TP1117 TP 0 5MM 1 TP1118 TP 0 5MM R1133 NF R1115 68K C1140 10uF C1141 10uF 5 SW 6 SW 4 VIN 10 ENF 11 ENM 8 OUT 9 OUT 12 LED1 14 LED2 1 RM 2 RF 7 PGND 13 AGND 3 AGND U1105 OCP8135VAD R1114 13K R1142 NF R1143 NF L1103 1 0uH LED1101 A SL686W1D J04A 4T TVS 1 2 TVS1109 NF_LESD9D12T5G TVS 1 2 TVS1108 NF_LESD9D12T5G 1 2 D1102 LED A SP194GHC C01 3T R1131 0 5 6 7 8 9 10 11 12 20 19...

Page 105: ...ON1202 24 5863 060 104 829 C1242 NF_33PF TVS1217 R1231 100K C1210 NF TVS1225 TVS1201 PESD5V0S1BL 1 2 C1223 NF C1224 NF C1225 NF 1 2 C1226 NF C1254 1 0uF TVS1211 NF_PSED5V0H1BSF TVS1266 PESD5V0S1BL TVS1212 NF_PSED5V0H1BSF TVS1258 NF_PSED5V0H1BSF R1261 2 2 R1264 47 R1263 100 R1241 100 R1232 1K 1 TP1210 TP 1 3MM 1 TP1209 TP 1 3MM 1 TP1211 TP 1 3MM TVS1210 PTVS15VU1UPA 1 TP1212 TP 1 3MM 1 TP1213 TP 1 ...

Page 106: ... GND G8 GND H8 GND J8 GND B9 GND C9 GND D9 GND E9 GND F9 GND G9 GND H9 GND J9 GND E10 GND G10 GND H10 GND K10 GND L10 GND E11 GND F11 GND G11 GND H11 GND J11 GND K11 GND E12 GND G12 GND A8 PRX2 B8 PRX1 E2 DRX9 F2 DRX10 B12 TX_GND U1301 RF TR MT6177 1 2 R1331 300 R1330 15 1 2 R1314 300 GND GND GND RF_LTE_HB_TX_RFIC 14 RF_LTE_MB_TX_RFIC 14 RF_2G_HB_TX_RFIC 15 RF_2G_LB_TX_RFIC 15 RF_LTE_LB_TX_RFIC 14...

Page 107: ...F SH1401 1 2 L1488 6 8nH C1486 NF 1 2 L1487 1 0nH C1472 NF L1486 3 6nH L1423 10NH 1 2 L1472 1 5nH C1473 NF 1 2 C1485 1 0nH 1 2 L1410 1 8nH 1 2 L1411 3 3NH 1 2 L1409 NF 1 2 R1413 390K 1 2 NTC1401 1 1 2 C1482 1 0uF 1 2 R1415 0 C1462 NF C1464 NF C1408 NF C1407 NF 1 2 L1407 1 0nH 1 INPUT 2 GND 3 GND 4 OUTPUT 5 GND U1404 RF SAW F6HH2G350EH71 1 INPUT 2 GND 3 GND 4 OUTPUT 5 GND U1406 RF SAW F6HH2G350EH71...

Page 108: ... U1513 VC7916 R1533 NF 1 2 C1535 NF R1534 NF C1542 1nF 1 2 C1541 10PF 1 2 TVS1501 C1540 33PF 1 2 L1570 NF 1 2 L1569 NF 1 IN 2 OUT CON1501 RF SWITCH 818000291 1 2 L1568 NF 1 2 R1535 0 1 2 R1536 6 98K 1 2 C1546 220pF 1 2 L1567 10K 1 GND 2 I O 3 GND 4 GND CON1502 RF ANT SOCKET 3 2 08 0113 L1509 82nH L1511 NF C1511 33PF R1511 0 R1512 0 R1540 0 R1541 0 C1551 100PF 1 2 L1571 100K C1571 100PF C1572 100PF...

Page 109: ...1603 NF 1 2 L1604 3 6nH 1 2 C1631 22PF 1 2 L1607 2 7nH C1620 33PF C1621 1 0uF C1622 33PF 2 RF2 1 RF1 10 RFC 9 RF3 3 CTL3 5 CTL1 7 GND 4 VDD 6 CTL2 8 RF4 U1607 RF SP4T SKY19245 686LF C1618 100PF R1601 0 R1602 0 1 IN 3 GND 4 GND 5 GND 6 HB 7 GND 8 GND 10 GND 2 GND 9 LB U1605 RF SAW SAWFD1G96AA3F0A 1 RF5 2 RF3 3 RF1 4 VDD 5 V3 6 V2 7 V1 8 NC1 9 RF2 10 RF4 11 RF6 12 RF8 13 ANT 14 RF7 15 TP U1606 RF SP...

Page 110: ...B_CTRL1 14 GPS_RX_IP 3 FM_DBG 27 WB_CTRL4 15 WB_TX_QN 40 AVDD18_GPS 7 SDATA 5 F2W_CLK 13 GPS_RX_IN 17 WB_TX_IN 18 WB_TX_IP 19 WB_RX_QN 16 WB_TX_QP 41 DVSS U1701 4IN1 MT6625L MT6625L QFN40 C1702 0 1uF C1703 100PF C1712 1 0uF C1713 100PF C1708 18PF L1708 NF 1 GND 2 GND 3 RFIN 4 VDD 5 EN 6 RFOUT U1702 GPS LNA RDALN16 C1709 NF C1710 1 0uF C1711 NF R1708 0 R1710 NF C1707 4700pF C1714 1 0uF SH1701 SH170...

Page 111: ... SH6410 COVER ALL 1 SH6411 COVER ALL 1 SH6414 COVER ALL 1 HOL9529 HOLE VIA2 5MM 1 HOL9135 HOLE VIA1 6MM 1 TP1202 HOLE VIA2 8MM 1 TP1201 HOLE VIA2 5MM 1 HOL1958 HOLE VIA2 5MM 1 HOL4091 HOLE VIA1 6MM 1 TP1208 HOLE VIA1 6MM 1 SH6416 COVER ALL 1 SH6413 COVER ALL 1 TP1904 TP 0 8MM 1 TP1903 TP 0 8MM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 J1901 24 5804 014 000 829 1 TP1901 TP 1 0MM 1 TP1902 TP 1 0MM 1 ANT1901 ...

Page 112: ...96 U0301_MT6739WW_BB chip IC Digital Baseband Processor Top U0601_16EMCP08 NL3DTB28 IC MCP eMMC LPDDR3 Top U0701_MT6357_IC PMIC Top 6 BGA PIN MAP 112 ...

Page 113: ...odel name MAIN Board_TOP U1001 P L Sensor MN66238LKDNJA U0301 BB IC MT6739WW U0601 eMMC LPDDR3 16EMCP08 NL3DTB28 U1004 G sensor MC3416 P U0701 PMIC MT6357V A U1402 MMMB VC7643 26 J1201 SIM SD Card J1207 J1208 J1209 J1211 P ower on Volume key Connect ors J1206 J1210 IA key Connectors CON0901 EAR J ACK CON1102 CAM_FRONT Connect 113 ...

Page 114: ...404 C0802 C0818 U0701 R0941 L0704 BEAD0902 C0719 C0815 C0932 C0925 R0923 TVS0901 R0924 C0931 TVS0902 L0901 C0934 R0960 U1001 U0301 C0623 C0622 R0444 U0601C0621 U1102 C0761 C0729 C0754 C0731 C0758 C0720 C0732 BEAD0904 R0940 C1250 C1457 R1210 R1256 J1201 C0930 CON1102 C1484 TVS1401 C1462 R1416 J1209 X0801 R0835 C0812 C0923 R0916R0908 TVS0931 C0725 C0814 R0801C0810 R0937 TVS0932C0939R0939 TVS1201 Q12...

Page 115: ...es LGE Internal Use Only 7 PCB LAYOUT LG model name MAIN Board_BOT CON1101 CAM_REAR Connect MIC0901 MIC U1701 WCN U1301 Transceiver U1606 SP8T U1513 SWITCH PA J0902 Bat connector U0704 Charge IC U1203 OVP CON1202 LCD Connector U1101 Backlig ht Driver U1105 LED Dri ver U0902 Audio AMP 115 ...

Page 116: ... 1 0 9 BEAD0901 B E A D 0 9 0 3 B E A D 0 9 0 7 B 1 1 0 2 L 0 9 0 3 L 0 9 0 4 B E A D 0 9 0 6 B 1 1 0 1 B E A D 1 7 0 1 C 1 5 3 3 C 1 7 0 6 C 0 9 0 5 C 0 9 0 7 C 0 4 2 8 C 0 4 2 9 C 0 4 4 0 C 0 4 4 1 C 0 4 4 3 C 0 4 4 4 C 0 5 0 4 C 0 9 2 9 C 1 3 0 1 C 1 3 0 2 C 1 3 0 3 C 1 3 0 4 C 1 3 0 5 C 1 3 0 6 C 1 7 0 2 C 1 1 4 7 C 0 5 0 1 C 1 1 3 7 C 1 1 5 6 C 1 2 2 3 C 1 2 2 4 C 1 2 2 5 C 1 2 2 6 C 1 2 4 7 ...

Page 117: ...right ⓒ 2019 LG Electronics Inc All right reserved Only training and service purposes LGE Internal Use Only 7 PCB LAYOUT LG model name SUB Board_TOP J0102 USB Connect J0103 TP Connect J0101 SUB Connect 117 ...

Page 118: ...C0120 C0119 C0118 J0103 6 10 C0109 R0106 C0111 C0102 R0107 TVS0111 TVS0110 C0112 C0110 C0104 L0203 L0201 C0219 FM1 1 5 TVS0101 C0101 C0103 ANT1 L0202 C0218 EMI0101 R0101 TVS0103 R0102 TVS0104 TVS0102 J0102 U0202 R0209 C0222 C0221 HOLE2 R0208 C0220 R0104 R0103 R0105 R0211 C0116 C0117 C0113 C0115 C0223 ANT2 L0204 R0210 C0114 96789_2_13 118 ...

Page 119: ...yright ⓒ 2019 LG Electronics Inc All right reserved Only training and service purposes LGE Internal Use Only 7 PCB LAYOUT LG model name SUB Board_BOT U0101 MIC J0104 J0105 J0106 J0107 J0108 VIB SPK PIN 119 ...

Page 120: ...ART FILM Adb ART FILM Adb J0107 J0106 J0108 J0104 J0105 M14 U0101 120 ...

Page 121: ...erved Only training and service purposes LGE Internal Use Only 8 Memory Variation Prime PCB Revision Memory P N 16EMCP08_NL3DTB28 RAM Size 1GB ROM Size 16GB Applied Models LMX120EMW LMX120HM LMX120BMW LMX120ZM LMX120ZMW LMX120JM LMX120YMW LMX120WM 121 ...

Page 122: ...nc All right reserved Only training and service purposes LGE Internal Use Only 9 HIDDEN MENU 1 Hidden Menu Start Enable developer options Install Hidden menu apk and HWTest apk Run HWTest app 2 HW TEST 3 MODEM TEST 2 HW Device Test 122 ...

Page 124: ...l D L setting 3 USB D L Cable setting If you want more information please refer LGST ServiceCenter Tool s Notification Download User Guide Tool Ver DLL name USB Driver 2 0 2 6 COMMON_20181023_ LGFLASHv216 dll LGMobileDriver_WHQL_Ver_4 2 0 Please Check the Version to LGST ServiceCenter Tool H W Name Part No SW D L Cable Micro 5P 56 open 910K USB DLC RAD32167835 TOT 124 ...

Page 125: ...r Guide D L configuration Require Remarks Computer Windows With more than two USB ports Equipped with GPIB card Jig With rf test heed Wire USB cable GPIB cable RF cable RF line loss is less than 1DB Power Supply Programmable power supply Voltage output requires accuracy of 0 3V All Instrument CMW500 Mobile Software According to production order Tool Software According to the latest release of DCC ...

Page 126: ...12 DISASSEMBLE GUIDE 12 1 Phone Disassemble Guide 1 Disassemble SIM Tray 2 Disassemble Rear cover 3 Disassemble Screw 15ea 4 Disassemble Inner Cover 5 Disassemble Connector 4ea 6 Disassemble HW Parts 9ea 7 Complete Disassembling BEGINE Disassemble cloc kwise from the t op 6 Disassemble main PCBA and Sub PCBA 126 ...

Page 127: ... 2 Battery Disassemble Guide 1 Leave Bar Assy in Temperature box 70º 8min 2 Disassemble NOTES 4 5 6 7 8 1 Must use plastic tools 2 Do not pierce the battery Damage to the battery skin can cause the battery to smoke or even burn 3 When disassembling the battery the plastic bar is left to avoid damage to LCM_FPC 2 Disassemble Battery 127 ...

Page 128: ...Internal Use Only Use the disassemble card to disassemble the hook at the corner above the tray hole Use the disassemble card to disassemble the hook at the corner of the rear lens The battery cover can be disassemble from the bottom 12 3 Battery Cover Disassemble Guide 12 DISASSEMBLE GUIDE 128 ...

Page 129: ...right ⓒ 2019 LG Electronics Inc All right reserved Only training and service purposes LGE Internal Use Only 13 EXPLODED VIEW EBR03 EBR01 EAU00 EBP00 EBP01 EAA00 ACQ01 EAD00 EBR02 EAB00 MDQ00 ACQ02 EAB01 129 ...

Page 130: ... 1 EAD010000 17 MJN71593401 Tape Protect 1 MJN061100 18 AFN79155001 Manual Assembly Operation 1 AFN053800 19 MBM67279101 Card Quick Reference 1 MBM062600 20 MAF65348001 Bag Vinyl 1 MAF086500 21 AAA78367801 Accessory Assembly 1 AAA000000 22 MAF66170501 Bag Vinyl 1 MAF086500 23 MGJ66983901 Plate 1 MGJ000000 24 MBM67279601 Card 1 MBM000000 25 MBM66205501 Card Warranty 1 MBM087200 26 MFL71466201 Manua...

Page 131: ... EAB65609701 Receiver 1 EAB010400 61 EAT64953701 Hybrid Touch LCD Module OLED 1 EAT130000 62 EAU64904101 Motor DC 1 EAU010000 63 EAC64559001 Rechargeable Battery Lithium Polymer 1 EAC020200 64 EBR89518401 PCB Assembly Sub 1 EBR072900 65 EBR89474801 PCB Assembly Sub Insert 1 EBR072500 66 MCQ70585601 Damper 1 MCQ000000 67 MCQ70512201 Damper 1 MCQ000001 68 EBR89518501 PCB Assembly Sub SMT 1 EBR072800...

Page 132: ...esistor Chip 2 R0106 R0107 95 MBV64461602 Clip 2 ANT1 ANT2 96 EAD65666801 Cable FFC 1 EAD030000 97 EAA65825401 Antenna Assembly 1 EAA040000 98 EAB65549301 Speaker Module 1 EAB010100 99 MDQ66458201 Frame 1 MDQ000000 100 ACQ91555904 Cover Assembly Rear 1 ACQ063300 101 MCK71165704 Cover Rear 1 MCK063300 102 MDJ66184201 Filter 1 MDJ000000 103 MHK67368601 Sheet 1 MHK000000 104 MBG67703101 Button 1 MBG0...

Page 133: ...88 131 EAE65969801 Capacitor Ceramic Chip 1 C1413 132 EAE65970001 Capacitor Ceramic Chip 1 R1401 133 EAE65970201 Capacitor Ceramic Chip 1 C1412 134 EAE66008801 Capacitor Ceramic Chip 8 C0922 C0931 C0932 C0935 C0936 C0942 C0943 C1467 135 EAE66008901 Capacitor Ceramic Chip 1 C1416 136 EAE66027001 Capacitor Ceramic Chip 2 C1494 C1495 137 EAE66046001 Capacitor Ceramic Chip 1 C1448 138 EAE66046101 Capa...

Page 134: ... Resistor Chip 3 C1219 R1222 R1231 177 EBC64777601 Resistor Chip 6 R0411 R1244 R1245 R1246 R1247 R1248 178 EBC64796901 Resistor Chip 4 R0900 R1146 R1243 R1416 179 EBC64797401 Resistor Chip 2 R1256 R1259 180 EBC64797501 Resistor Chip 1 R1257 181 EBC64798001 Resistor Chip 25 L1405 L1410 L1425 L1426 L1451 R0301 R0320 R0325 R0326 R0801 R0812 R0814 R0816 R0908 R0918 R0928 R0930 R0937 R0939 R1131 R1134 ...

Page 135: ... Chip 1 C1707 216 EAE65252701 Capacitor Ceramic Chip 2 C0522 C1147 217 EAE65252801 Capacitor Ceramic Chip 3 C0926 C0999 C1542 218 EAE65253401 Capacitor Ceramic Chip 1 C0953 219 EAE65262801 Capacitor Ceramic Chip 7 C0739 C0743 C0928 C0951 C1307 C1308 C1704 220 EAE65263201 Capacitor Ceramic Chip 6 C0439 C0745 C0757 C0901 C0927 C1132 221 EAE65264801 Capacitor Ceramic Chip 1 C1230 222 EAE65265201 Capa...

Page 136: ...rator Switch 1 U1606 256 EAM64871401 Filter Duplexer 1 U1516 257 EAM64892001 Filter Saw 1 U1602 258 EAM64892101 Filter Saw 1 U1603 259 EAM64910601 Filter Separator Switch 1 U1511 260 EAM64910801 Filter Saw 1 U1703 261 EAM64910901 Filter LCR 3 EMI1101 EMI1102 EMI1103 262 EAM64911301 Filter Saw 1 U1612 263 EAM64912001 Filter Saw 1 FL1700 264 EAM64930901 Filter Bead 1 B1102 265 EAM64931101 Filter Dup...

Page 137: ...r Multilayer Chip 3 C1606 L1623 L1625 299 EAP64972601 Inductor Multilayer Chip 1 L1509 300 EAP64972701 Inductor Multilayer Chip 2 L1423 R1607 301 EAP65010901 Inductor Multilayer Chip 6 C1515 C1519 C1540 C1617 L1556 L1613 302 EAP65011001 Inductor Multilayer Chip 2 L1565 L1620 303 EAP65011101 Inductor Multilayer Chip 3 C1522 C1708 L1532 304 EAP65011201 Inductor Multilayer Chip 1 C1625 305 EAP6501130...

Page 138: ...838201 Resistor Chip 1 R1315 333 EBC64838401 Resistor Chip 1 R0926 334 EBC64858101 Resistor Chip 1 R1111 335 EBC64876601 Resistor Chip 1 R0917 336 EBC64876901 Resistor Chip 2 R1314 R1331 337 EBC65420001 Resistor Chip 1 R0329 338 EBC65420101 Resistor Chip 1 L1567 339 EBC65420201 Resistor Chip 1 R1536 340 EBC65442101 Resistor Chip 2 R0905 R0913 341 EBC65442601 Resistor Chip 1 R1114 342 EBC65477601 R...

Page 139: ... Description Qty Location No 361 MHK67409901 Sheet 1 MHK000000 362 MCQ70549101 Damper 1 MCQ000002 363 EBP63922901 Camera Module 1 EBP000000 364 EBP63981801 Camera Module 1 EBP000001 365 FAB34040201 Screw Machine 17 FAB010000 366 MEZ66516305 Label Approval 1 MEZ002100 367 MEZ67947101 Label 1 MEZ000000 368 SAD37926801 Software Mobile 1 SAD010000 139 ...

Page 140: ......

Search results

Summary of Contents for LM-X120HM

Reviews:

Related manuals for LM-X120HM

Brands by name

Popular brands

LG LM-X120HM, Service Manual

Search results

Summary of Contents for LM-X120HM

Reviews:

Related manuals for LM-X120HM

Brands by name

Popular brands