lg-g2-vs980_service manual
Post on 01-Jul-2018
220 Views
Preview:
TRANSCRIPT
-
8/15/2019 LG-G2-VS980_Service Manual
1/514
Internal Use Only
Service ManualLG-VS980
Date: August, 2013 / Issue 0.9
-
8/15/2019 LG-G2-VS980_Service Manual
2/514
- 2 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Table Of Contents
1. INTRODUCTION ..................................................................... 3
1.1 Purpose ........................................................................................................3
1.2 Regulatory Information .........................................................................3
1.3 Specifications .............................................................................................5
2. PERFORMANCE...................................................................... 9
2.1 Product Name ............................................................................................9
2.2 Supporting Standard ..............................................................................9
2.3 Functions of Major Semi-Conductors ..............................................9
2.4 HW Features ............................................................................................ 10
2.5 SW Features ............................................................................................. 12
2.6 Assembly components ....................................................................... 16
2.7 SMT Components: Top side ............................................................... 17
2.8 SMT Components: Bottom side....................................................... 18
3. TROUBLE SHOOTING .......................................................... 19
3.1 CDMA 1X/DO Rx Part Troubleshooting ........................................ 19
3.2 WCDMA Rx Part Troubleshooting ................................................... 85
3.3 CDMA Tx Part Trouble ........................................................................137
3.4 GSM Rx Part Troubleshooting ........................................................221
3.5 GSM Tx Part Trouble ...........................................................................273
3.6 LTE Part ....................................................................................................353
3.7 BT/WIFI Part ...........................................................................................375
3.8 NFC Part...................................................................................................380
3.9 Power TS ..................................................................................................382
3.10 Charging TS .........................................................................................386
3.11 USB .........................................................................................................388
3.12 Audio .....................................................................................................390
3.13 Camera (13M/2.4M) .........................................................................402
3.14 LCD .........................................................................................................406
3.15 Touch Sensor Trouble Shooting ..................................................408
3.16 Motion&Gyro Sensor on/off TS ...................................................411
3.17 Compass Sensor on/off TS ............................................................414
3.18 Proximity Sensor on/off TS ............................................................417
3.19 Ambient Sensor on/off TS .............................................................419
3.20 Wireless Charging .............................................................................421
4. DOWNLOAD .......................................................................424
5. BLOCK DIAGRAM .............................................................. 441
6. CIRCUIT DIAGRAM ............................................................ 453
7. BGA PIN MAP .....................................................................475
8. PCB LAYOUT ....................................................................... 481
9. CALIBRATION .....................................................................491
10. DISASSEMBLE GUIDE ...................................................... 510
11. EXPLODED VIEW & REPLACEMENT PART LIST .............515
-
8/15/2019 LG-G2-VS980_Service Manual
3/514
- 3 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1. INTRODUCTION
This manual provides the information necessary to repair, calibration, description and download the features
of this model.
1. 1 Purpose
Toll fraud, the unauthorized use of telecommunications system by an unauthorized part (for example,
persons other than your company’s employees, agents, subcontractors, or person working on your
company’s behalf) can result in substantial additional charges for your telecommunications services.
System users are responsible for the security of own system. There are may be risks of toll fraud associated
with your telecommunications system. System users are responsible for programming and configuring
the equipment to prevent unauthorized use. The manufacturer does not warrant that this product is
immune from the above case but will prevent unauthorized use of common carrier
telecommunication service of facilities accessed through or connected to it. The manufacturer will not
be responsible for any charges that result from such unauthorized use.
1. 2 Regulatory Information
A. Security
B. Incidence of HarmIf 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 changes in its communications facilities or procedure. If these
changes could reasonably be expected to affect the use of the phones or compatibility with the net work,
the telephone company is required to give advanced written notice to the user, allowing the user to take
appropriate steps to maintain telephone service.
D. Maintenance Limitation
Maintenance limitations on the phones must be performed only by the manufacturer or its authorized agent.
The user may not make any changes and/or repairs expect as specifically noted in this manual. Therefore,
note that unauthorized alternations or repair may affect the regulatory status of the system and may void any
remaining warranty.
-
8/15/2019 LG-G2-VS980_Service Manual
4/514
- 4 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
E. Notice of Radiated Emission
This model complies with rules regarding radiation and radio frequency emission as defined by local
regulatory agencies. In accordance with these agencies, you may be required to provide information such as
the following to the end user.
ATTENTION
H. Electrostatic Sensitive Devices
Boards, which contain Electrostatic Sensitive Device (ESD), are indicated by the sign. Following information is
ESD handling:
• Service personnel should ground themselves by using a wrist strap when exchange system boards.
• When repairs are made to a system board, they should spread the floor with anti-static mat 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.
A phone may interfere with sensitive laboratory equipment, medical equipment, etc. Interference from
unsuppressed engines or electric motors may cause problems.
G. Interference and Attenuation
F. Pictures
The pictures in this manual are for illustrative purposes only; your actual hardware may look slightly
different.
-
8/15/2019 LG-G2-VS980_Service Manual
5/514
- 5 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
KEY FEATURES
• Android 4.2.2
• Up to 7 Customizable Home Screens
• 5.2” Touch Screen
• 13MP AF&OIS with flash, 2.4MP VT Image sensor
• 3G/4G Mobile Hotspot
• DivX®, H.264, H.263 Capable
ENHANCED USER EXPERIENCE
• Android 4.2.4
• Home Screens – customize 1 to 7 screens with shortcuts to apps, favorites, and widgets
• Virtual Keypad – use one continuous finger motion to input text when composing a message
• Exchange Support – improved security, remote wipe capability for Exchange administrators, support for
Exchange calendars in the Calendar application and Global Address Lists lookup in the Email and
Contact applications
• Proximity Sensor – locks the touch screen and buttons while talking on the phone
• Motion Sensor – Digital compass , Accelerometer and Gyroscope
• USB Charging via Computer• Airplane Mode (RF Off)
*Available for Exchange 2007 and higher.
DESIGN
• Thinner and Stylish Design
• 5.2” IPS FHD Display
• Capacitive Touch Screen – Glass with fast and accurate response
• Touch Vibration for Tactile Feedback*
• Micro USB Charging Port
*Only available on certain interactions with the touch screen.
MOBILE MEDIA• Android Market™ – browse and download thousands of free and paid apps from around the world†
• Live Wallpaper – dynamic, animated backgrounds
• Full Web Browsing
• Mobile Instant Messaging – Google Talk™
• Gmail™ and Email – mobile personal and corporate email†
• Visual Voice Mail†
• Text, Picture, Video, and Voice Messaging†
• Java Support
1. 3. Specifications
-
8/15/2019 LG-G2-VS980_Service Manual
6/514
- 6 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
CAMERA/VIDEO
MULTIMEDIA
• DivX® Video Playback
• Video Player for AVI, WMV, MP4, MKV, 3GP, and 3G2 Formats
• Verizon Video
• Music Player for MP3, WMA, and Unprotected AAC
• Stereo Sound via Headset or Bluetooth
• Multitask While Playing Music in the Background
• Music Library – Organized by Artists, Albums, Songs, and Playlists
• Repeat and Shuffle Music Playback Modes
• 32GB Internal Memory Enhancement
• Media sync (MTP) – transfer files between your phone card and PC*
*USB cable (sold separately) required.
• 13MP AF&OIS with flash, 2.4MP VT CMOS Image sensor and Camcorder*
• Camera Resolutions: 13M(4160x3120), W10M(4160x2340), 8M(3264x2448), 1M(1280 x 960)
• Camera and Video Zoom: up to 8x
• Image Editor: zoom, rotate, crop images
• Brightness, ISO, White Balance,* Color Effects,* Shot Mode, Self -Timer
• Time Catch Shot – take sequential five pictures at once before the shutter key is touched.
• Cheese shutter – take photo with voice command.
• Continuous Shot – take 20 shots in rapid sequence.
• Video Resolutions: Full HD 60fps(1920x1080), Full HD 30fps(1920x1080), HD(1280 x 720), MMS(320 x
240), MMS(176 x 144)
• Video Recording Time: up to 1.2MB (sending) and 4GB/27 minutes (saving)** -
• Audio zoom – Increase sound sensitivity in zooming area and decrease noise when recording.
*Available in both video and camera modes.
**Depends on available memory - Full HD 30fps(1920x1080)
-
8/15/2019 LG-G2-VS980_Service Manual
7/514
- 7 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
BLUETOOTH®
• Version: 4.0
• Supported Profiles: headset, hands-free, object push, advanced audio distribution (stereo), audio/video
remote control, file transfer, phone book access, message access, serial port, human interface device
• Listen to Music with Optional Stereo Bluetooth Headset*
• Send User-Generated Pictures (JPEG) and Videos via Bluetooth Wireless Technology
*Accessories sold separately.
VOICE/AUDIO
• One-Touch Speakerphone*
• Speaker-Independent Voice Commands
• Voice-Activated Dialing
• Text to Speech
• MP3 Music Ringer Support (clips from hit songs)†
• Voice Memo Recording
• 31 Unique Ringtones + Vibrate and Silent Modes
• Set Voice Memos as Ringtones
• TTY Support
• Hearing Aid Compatible M3/T4
*Only available during a call.
TOOLS & DATA
• Android Apps: Alarm/Clock, Chrome, Calculator, Calendar (Corporate or Google), Camera, Contacts, Email,
File Manager, Gallery, Gmail, Google+, Life Square, Maps, Messaging, Messenger, Music Player, Notebook,
Phone,Play Books, Play Movies & TV, Play Music, Play Store, POLARIS Office 5, Quick Remote, Quick
Translator, Richnote, Settings, Tasks, Talk, Video Editor, Videos, Voice Mate, Voice Recorder, Voice Search,
Weather, Youtube
• Navigator® – spoken turn-by-turn directions showing real-time traffic
• Wi-Fi Connectivity – IEEE 802.11a/b/g/n/ac
• Phone Book – unlimited fields* for numbers, emails, physical addresses, IM screen names, notes,
nickname, web addresses, special dates, and a picture ID**
• FOTA Capable – upgrade firmware over the air†
• S-GPS and A-GPS Support for Enhanced Location Accuracy
*Depends on available memory.
**Dependent on photos stored in your gallery.
-
8/15/2019 LG-G2-VS980_Service Manual
8/514
- 8 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
.SPECIFICATIONS
• Technology: CDMA/WCDMA/GSM/LTE
• Frequencies:
• Data Transmission: 1xRTT(0,1,10), 1xEVDO(0,1), LTE(B13 / B4)
• Dimensions: 138.5(H) x 70.9(W)x 9.33(D) (mm)
• Weight: 155g
• Display: 5.2”, 1920 x 1080 pixels, 16.7M Colors, TFT
• Standard Battery: 3,000[mAh] Typ.• Internal Memory Size: 32 GB
ACCESSORIES
• Travel Adapter and USB Data Cable*
• Car mount (CMT) (Optional)
• Smart Quick Cover (Optional)
• Desk Top Cradle (DTC) (Optional)
• Vehicle Power Charger (VPC) (Optional)
• Wireless Charger (Optional)
Band Tx Rx
GSM850 824.2~848.8 869.2~893.8
GSM900 880.2~914.8 925.2~959.8
GSM1800 1710.2~1784.8 1805.2~1879.8
GSM1900 1850.2~1909.8 1930.2~1989.8
WCDMA900 882.4~912.6 927.4~957.6
WCDMA1900 1852.4~1912.6 1932.4~1987.6
WCDMA2100 1922.4~1977.6 2112.4~2167.6
DCN 817~849 862~894
PCS 1850~1915 1930~1995
LTE B13 777~787 746~756
LTE B4 1710~1755 2110~2155
GPS 1575.42Mhz
BT 24~2485Mhz
-
8/15/2019 LG-G2-VS980_Service Manual
9/514
2. PERFORMANCE
- 9 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
2. PERFORMANCE
2.1 Product Name
VS980 : US Cellular/US PCS/WCDMA/GSM/LTE B13,B4/GPS
(EVDO Rev_0 / EVDO Rev_A)
2.2 Supporting Standard
2.3 Functions of Major Semi-Conductors
Item Feature Comment
Supporting Standard US Cellular/US PCS/WCDMA/GSM/LTE B13,B4/GPS
Cellular TX : 824.82~848.19 MHzWCDMA900 TX: 882.4~912.6 MHz
GSM850 TX: 824.2~848.8 MHz
Cellular RX : 869.82~893.19 MHz
WCDMA900 RX: 927.4~957.6 MHz
GSM850 RX: 869.2~893.8 MHz
PCS TX : 1850~1910 MHz
WCDMA1900 TX: 1852.4~912.6 MHz
GSM900 TX: 880.2~914.8 MHz
PCS RX : 1930~1990 MHz
WCDMA1900 RX: 1932.4~1987.6 MHz
GSM900 RX: 925.2~959.8 MHzLTE13 TX : 777~787 MHz
WCDMA2100 TX: 1922.4~1977.6 MHz
GSM1800 TX: 1710.2~1784.8 MHz
LTE13 RX : 746~756 MHz
WCDMA2100 RX: 2112.4~2167.6 MHz
GSM1800 RX: 1805.2~1879.8 MHz
LTE 4 TX : 1710~1755 MHz
GSM1900 TX: 1850.2~1909.8 MHz
LTE 4 RX : 2110~2155 MHz
GSM1900 RX: 1930.2~1989.8 MHz
GPS : 1575.42 MHz
Classification Function
MSM8974 Terminal operation control and digital signal processing
DDR2 Memory
(H9CKNNNBPTMRLR-NTM)
eMMC
(THGBMAG8A4JBA4R)
NAND Flash Memory (32Gbyte) + SDRAM (16Gbit)
Storing of terminal operation program
WTR1605L
WTR1605Converts Rx and Tx RF signal to baseband signal
-
8/15/2019 LG-G2-VS980_Service Manual
10/514
2. PERFORMANCE
- 10 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
2.4 HW Features
Item Feature Comment
Form Factor DOP
Battery
1) Capacity
Standard : Li-Ion, 3,000mAh(TYP)
2) Packing Type : Embeded Battery
Size Standard : 138.5 x 70.9 x 9.33 (mm)
Weight 155g (with Battery)
PCB any-layer 12layers 0.8mm Main
Stand by time CDMA DCN/PCS over 310 hrs@ SCI=2(pwr:
-75dBm)
Charging time Up to 270 mins@ Power Off/
3000mAh
Talk time CDMA over 420 mins @ Rx pwr -92dBm
LCD 5.2” (1920x1080 pixel) 16.7M TFT LCD
Built-in Camera 13 Mega Auto Focus & OIS / 2.4 Mega VT CAM
KeypadBack side Key : 3
(Volume Up Key 1, Power Key 1, Volume Down Key 1)
ANT
CDMA/GSM(850/900/1800/1900)/WCDMA(B1/B2/B5/B8) : LDS Type
LTE B13 Drx/LTE B4 Prx : LDS Type
LTE B13 Prx/LTE B4 Drx : FPCB Type
GPS/DCN Drx : FPCB Type
BT/Wi-Fi(2.4GHz, 5GHz) : FPCB Type
PCS Drx : FPCB Type
System connector 5 Pin
Ear Phone Jack 4pole, 3.5Φ Ear Jack
MemoryNAND Flash : 32GByte
SDRAM : 16Gbit
Speech coding EVRC, QCELP, AMR
Data Built in Data support
-
8/15/2019 LG-G2-VS980_Service Manual
11/514
2. PERFORMANCE
- 11 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Item Feature Comment
Vibrator Linear vibrator
Bluetooth V4.0 BLE
(for Buzzer Function) SW decoded
Music Player MP3, AAC, AAC+, WMA, OGG
Video Player H.263, H.264, MPEG-4, WMV
Camcorder MPEG-4
Voice Recording Yes
Speaker Phone mode
SupportYes
Travel Adapter Yes
CDROM No
Stereo Headset No
Data Cable Yes
T-Flash
(External Memory)No
-
8/15/2019 LG-G2-VS980_Service Manual
12/514
2. PERFORMANCE
- 12 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
2.5 SW Features
Item Feature Comment
RSSI Yes
Charging Yes
Key Volume Yes
Audio Volume Yes
Time / Date Display Yes
Multi-Language Yes
62 languages includes English,
Spanish, Korean, Chinese,
French, German and Italian .
Quick Access Mode Quick Memo
PC Sync No
Speed Dial Yes
Profile No
CLIP / CLIR Yes GSM only support
Phone Book
Name : First Name/Last Name/Middle Name/Name Prefix/Name
Suffix
Phone : Mobile/Home/Home Fax/Work/Other/Pager/Work Fax/Car/
Main/Other Fax/Radio/Assistant
Email : Home/Work/Other
IM:AIM/Google Talk/ICQ/Jabber/QQ/Skype/Window Live/Yahoo
Address : Home/Work/Other
Events : Birthday/Anniversary
Groups
Ringtone
Notes
Nickname
Website
Organization
Notification LED
There is no limitation on the
number of items.
It depends on Available
memory amount.
-
8/15/2019 LG-G2-VS980_Service Manual
13/514
2. PERFORMANCE
- 13 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Item Feature Comment
Last Dial Number Yes
Last Dial Numbers, Last
Received Numbers and Last
Missed Numbers can store.
Last Received
NumberYes
Last Dial Numbers, Last
Received Numbers and Last
Missed Numbers can store .
Last Missed Number Yes
Last Dial Numbers, Last
Received Numbers and Last
Missed Numbers can store.
Search by Number
/ NameName / Number
Group Yes
There is no limitation on the
number of items.
It depends on
available memory amount.
Group features can be added
or edited by user.
(Except for some specific
groups.)
Fixed Dial Number No
Service Dial Number No
Own Number No
Voice Memo Yes Voice Recorder
Call Reminder No
Network Selection YesGlobal, LTE/CDMA, LTE/GSM/
UMTS
Mute Yes
Call Divert Yes Call forwarding
Call Barring Yes GSM only support
Call Charge (AoC) No
-
8/15/2019 LG-G2-VS980_Service Manual
14/514
2. PERFORMANCE
- 14 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Item Feature Comment
Call Duration Yes GSM only support
SMS () There is no limitation on the number of items.
It depends on available memory amount.
SMS Over GPRS Yes
Melody / Picture
Send / Receive / Save
No
No
MMS MPEG4
Send / Receive / Save
Yes
Yes
Long Message Yes
Cell Broadcast No
Download FOTA/EUT
Game Yes Games
Calendar Yes
Memo Yes Richnote
World Clock Yes Alarm/clock
Unit Convert No
Stop Watch Yes Alarm/Clock
Wall Paper Yes
WAP Browser No Support HTML Browser
Download Melody /
WallpaperYes Play Store, Verizon Tones
SIM Lock Yes
SIM Toolkit Yes
MMS Yes
-
8/15/2019 LG-G2-VS980_Service Manual
15/514
2. PERFORMANCE
- 15 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Item Feature Comment
EONS No
CPHS No
Camera Yes 13M AF
JAVA No
Voice Dial Yes
IrDa No
Bluetooth Yes Ver. 4.0 + LE
FM radio No
Hold / Retrieve Yes
Conference Call Yes Max. 3
DTMF Yes
Memo pad Yes QuickMemo
TTY Yes
AMR Yes
SyncML No
IM Yes Google Talk
Email Yes
-
8/15/2019 LG-G2-VS980_Service Manual
16/514
2. PERFORMANCE
- 16 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
2.6 Assembly components
Top Touch conn.
Receiver
Main camera
Motor
40 pin conn.
USB Re-driver
Touch IC
Batt. Conn.
Sensor FPCB
VT camera
NFC chip.
60pin conn.
WLC C - Clip
NFC C - Clip
Coaxial cable
Speaker contact C - Clip
Bottom Touch conn.
EarJack conn.
EarJack conn.
LCD conn.
USB conn.
-
8/15/2019 LG-G2-VS980_Service Manual
17/514
2. PERFORMANCE
- 17 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
2.7 SMT Components: Top side
1
23
4
6
7
11
12
1314
15
16
17
1819
20
89
10
5
1. U9002 DSV
2. L10004 T - coil3. ANT10000~1 receiver
4. BAT1601 Coin cell
5. J13000 SIM socket
6. U2004 QFE1101
7. U1005 LTE 13 PAM
8. U1006 Quad FEM
9. U1003 HCPA
10. U3000/U5000 MSM8974, DDR RAM
11. U15012 BT/ Wi-Fi
12. MIC10003 Sub mic13. U11001 Acc Gyro
14. U11000 motor drv.
15. X12000 X - tal
16. U12001 Slimport
17. U6001 PM8941
18. U8000 SMB349
19. Q8001 BET FET
20. X6000 19.2MHz
-
8/15/2019 LG-G2-VS980_Service Manual
18/514
2. PERFORMANCE
- 18 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
2.8 SMT Components: Bottom side
1 23
4
5
6
7
8
910 12
13
14
15
16
20 21
22
23 24 25
17 26 18
19
11
1. U1007 GPS LNA
2. SW1007 MS3. ANT1009~10 GPS
4. ANT14001 BT C - clip
5. U9004 OIS LDO
6. CN9001 13M CAM Conn
7. U7000 PM8841
8. CN13001 40PIN
9. ANT1007 1X/DO 2nd
10. CN8000 BAT Conn.
11. U5001 eMMC12. U2001 QFE LTE
13. SW1002 LTE 4/13D
14. U1001 CDMA PAM
15. U2003 WTR160516. U2002 WTR1605L
17. U1004 DIPLEXER
18. SW1001 CDMA MS
19. CN13000 60PIN
20. U10000 WCD9320
21. LD9000 Flash LED
22. CN13002 Sensor conn.
23. U10005 EJ det.
24. CN9000 VT conn.25. ANT1005,6 LTE 13/4D
26. FL1003 CDMA DUPLEXER
-
8/15/2019 LG-G2-VS980_Service Manual
19/514
3. TROUBLE SHOOTING
- 19 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
3.1 CDMA 1X/DO Rx Part Troubleshooting
3.1.1 DCN 1X/DO Rx
Rx TEST SETUP
- Test Band : US Cellular- Test Channel : 384
- SID : 28 (DO : Default Sector ID)
- Sector Power : -30 dBm
1. Check
DC Power Supply circuit
START
2. Check WTR XO
3.Check RF Signal path
Re download S/W, Cal
* There are no Test Points on the IQ Data Line. So It is impossible to check the IQ Data Wave form
-
8/15/2019 LG-G2-VS980_Service Manual
20/514
3. TROUBLE SHOOTING
- 20 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
WTR1605
(U2003)
DUPLEXER
(FL1001) NOTCH
(FL1002)
DIPLEXER
(FL1005)
SPDT
(U1004)
MS-156C
(SW1003)
-
8/15/2019 LG-G2-VS980_Service Manual
21/514
3. TROUBLE SHOOTING
- 21 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
START
No
DC Power supply Circuit is OK.
See next Page to check XO circuit
Yes
Check TP1(C2011)
+1.3V_VREG 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
Check TP2(C2036)
+2.05V_VREG is OK?
Yes
Check TP3(C2045)
+1.8V_VREG is OK?
3.1.1.1 Checking DC Power supply circuit (+1.3V_VREG/ +2.05V_VREG / +1.8V_VREG)
-
8/15/2019 LG-G2-VS980_Service Manual
22/514
3. TROUBLE SHOOTING
- 22 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Bottom Side
(+1.3V_VREG)
TP1 : C2011
(+1.3V_VREG)
WTR1605
(U2003)
4 2
1 2 7
1 3 6
9 7
1 1 1
1 0 8
5 1
6 7
8 3
4 4
1 1 7
9 8
1 1 6
1 1 8
4 0
6 5
7 6
6 6
5 3
8 5
3 7
5 5
2 4
3 1
2 5
2 8
2 6
8 7
109
139
131
138
130
140
132
141
133
126
119
112
95
103TX_HB
TX_MB4
TX_MB3
TX_MB2
TX_MB1
TX_LB4
TX_LB3
TX_LB2
TX_LB1
TX_BB_IP
TX_BB_IM
TX_BB_QP
TX_BB_QM
DAC_REF
V D D_
D I O
V D D_
R F 1_
D_
F E
V D D_
R F 1_
D_
L B L O
V D D_
R F 1_
D_
M B L O
V D D_
R F 1_
G_
B B
V D D_
R F 1_
G_
L N A
V D D_
R F 1_
G_
P L L
V D D_
R F 1_
G_
V C O
V D D_
R F 1_
J D E T
V D D_
R F 1_
P_
F E L O_
2
V D D_
R F 1_
P_
P L L
V D D_
R F 1_
P_
V C O
V D D_
R F 1_
S_
P L L
V D D_
R F 1_
S_
V C O
V D D_
R F 1_
T_
D A
V D D_
R F 1_
T_
L O
V D D_
R F 1_
T_
S Y N
V D D_
R F 1_
T_
U P C
V D D_
R F 2_
D_
B B
V D D_
R F 2_
P_
B B
V D D_
R F 2_
P_
V C O
V D D_
R F 2_
S_
V C O
V D D_
R F 2_
T_
B B
V D D_
R F 2_
T_
D A
V D D_
R F 2_
T_
P L L
V D D_
R F 2_
T_
V C O
V D D_
R F 2_
X O
V D D_
R F 1_
P_
F E L O_
1
C 2 0 5 9
1 0 0 n
1 0 0 n
C 2 0 6 0
C 2 0 5 8
1 0 0 n
1 0 0 n
C 2 0 1 9
C 2 0 1 7
1 0 0 n
4 . 7 u
C 2 0 1 1
C 2 0 3 6
4 . 7 u
C 2 0 3 5
1 0 0 n
1 0 0 n
C 2 0 3 4
+1V8_VREG_S3A
C 2 0 1 4
1 0 0 p
2
C 2 0 3 3
1 0 0 n
1 u
C 2 0 4 5
1
2
C 2 0 1 5
1 0 0 n
C 2 0 1 6
1 0 0 n
C 2 0 1 3
1 0 0 n
1 0 0 n
C 2 0 1 2
1 0 0 n
C 2 0 6 1
TX_OUT_1X/DO_BC1
TX_OUT_1X/DO_BC0
+1V3_VREG_L4
+2V05_VREG_L15
WTR1_TXBB_Q_P
WTR1_TXBB_Q_M
WTR1_TXBB_I_M
WTR1_TXBB_I_P
WTR1_DAC_IREF
TP1
-
8/15/2019 LG-G2-VS980_Service Manual
23/514
3. TROUBLE SHOOTING
- 23 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Bottom Side
(+2.05V_VREG / +1.8V_VREG)
TP2 : C2036
(+2.05V_VREG)
TP3 : C2045
(+1.8V_VREG)
WTR1605
(U2003)
4 2
1 2 7
1 3 6
9 7
1 1 1
1 0 8
5 1
6 7
8 3
4 4
1 1 7
9 8
1 1 6
1 1 8
4 0
6 5
7 6
6 6
5 3
8 5
3 7
5 5
2 4
3 1
2 5
2 8
2 6
8 7
109
139
131
138
130
140
132
141
133
126
119
112
95
103TX_HB
TX_MB4
TX_MB3
TX_MB2
TX_MB1
TX_LB4
TX_LB3
TX_LB2
TX_LB1
TX_BB_IP
TX_BB_IM
TX_BB_QP
TX_BB_QM
DAC_REF
V D D_
D I O
V D D_
R F 1_
D_
F E
V D D_
R F 1_
D_
L B L O
V D D_
R F 1_
D_
M B L O
V D D_
R F 1_
G_
B B
V D D_
R F 1_
G_
L N A
V D D_
R F 1_
G_
P L L
V D D_
R F 1_
G_
V C O
V D D_
R F 1_
J D E T
V D D_
R F 1_
P_
F E L O_
2
V D D_
R F 1_
P_
P L L
V D D_
R F 1_
P_
V C O
V D D_
R F 1_
S_
P L L
V D D_
R F 1_
S_
V C O
V D D_
R F 1_
T_
D A
V D D_
R F 1_
T_
L O
V D D_
R F 1_
T_
S Y N
V D D_
R F 1_
T_
U P C
V D D_
R F 2_
D_
B B
V D D_
R F 2_
P_
B B
V D D_
R F 2_
P_
V C O
V D D_
R F 2_
S_
V C O
V D D_
R F 2_
T_
B B
V D D_
R F 2_
T_
D A
V D D_
R F 2_
T_
P L L
V D D_
R F 2_
T_
V C O
V D D_
R F 2_
X O
V D D_
R F 1_
P_
F E L O_
1
C 2 0 5 9
1 0 0 n
1 0 0 n
C 2 0 6 0
C 2 0 5 8
1 0 0 n
1 0 0 n
C 2 0 1 9
C 2 0 1 7
1 0 0 n
4 . 7 u
C 2 0 1 1
C 2 0 3 6
4 . 7 u
C 2 0 3 5
1 0 0 n
1 0 0 n
C 2 0 3 4
+1V8_VREG_S3A
C 2 0 1 4
1 0 0 p
2
C 2 0 3 3
1 0 0 n
1 u
C 2 0 4 5
1
2
C 2 0 1 5
1 0 0 n
C 2 0 1 6
1 0 0 n
C 2 0 1 3
1 0 0 n
1 0 0 n
C 2 0 1 2
1 0 0 n
C 2 0 6 1
TX_OUT_1X/DO_BC1
TX_OUT_1X/DO_BC0
+1V3_VREG_L4
+2V05_VREG_L15
WTR1_TXBB_Q_P
WTR1_TXBB_Q_M
WTR1_TXBB_I_M
WTR1_TXBB_I_P
WTR1_DAC_IREF
TP3
TP2
-
8/15/2019 LG-G2-VS980_Service Manual
24/514
3. TROUBLE SHOOTING
- 24 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
START
YES
Replace Main B/D
NO
Check TP1(C2050)Is it 19.2MHz?
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 U6001 and then check
TP1(C2050)
3.1.1.2 Checking WTR XO circuit
-
8/15/2019 LG-G2-VS980_Service Manual
25/514
3. TROUBLE SHOOTING
- 25 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Bottom Side
TP1 : C2050
(XO_OUT_A0)
WTR1605
(U2003)
86
100
45
89
80
93
60
79120
105
121
88
114
96DNC4
DNC5
GP_DATA2
GP_DATA1
GP_DATA0
XO_IN
VTUNE_PRX
RBIAS
DNC3
SSBI_PRX_DRX
SSBI_TX_GNSS
RX_ON
RF_ON
DNC1
0R2004
4.75KR2005
DNIC2052
100pC2050
WTR1_SSBI_PRX_DRX
WTR1_SSBI_TX_GPS
RX_ON1
RF_ON1
XO_OUT_A0
TP1
-
8/15/2019 LG-G2-VS980_Service Manual
26/514
3. TROUBLE SHOOTING
- 26 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Check TP1(C1096) at FL1005.
Check if there is any major
difference referring To Figure 3.1.1 (b). Is any signal
detected at that point ?
No
START
DIPLEXER is OK. See next page to check B13 NOTCH
Yes
YesIs there any major difference
referring To Figure 3.1.1 (b)?
Is there any major difference
referring To Figure 3.1.1 (c)?
Check TP2(L1013) at FL1005
Check if there is any major difference referring
To Figure 3.1.1 (c). Is any signal detected at
that point ?
No
No
Yes
Yes
Replace FL1005
Check C1096, L1111 , U1004
Replace FL1005
No
Check L1013
3.1.1.3 Checking RF signal path (DIPLEXER)
-
8/15/2019 LG-G2-VS980_Service Manual
27/514
3. TROUBLE SHOOTING
- 27 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
DIPLEXER
(FL1005)
TP2 : L1013 TP1: C1096
-
8/15/2019 LG-G2-VS980_Service Manual
28/514
3. TROUBLE SHOOTING
- 28 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Figure 3.1.1 (b)
Figure 3.1.1 (c)
C1158 100p
C1159 100p
C1160 100p
+ 3 V 0
_ V R E
G_
L 1 6
L1008
DNI
3 9 p
C 1 0 9 6
1
2
L1007
DNI
2
1
EAM62251001
U1004
RFMD
7 8 9
1 0
11
1 2
2
1 3
1
5
4 6 3
G N D 2
G N D 4
G N D 3
RF1
G N D 1
G N D 7
ANT
G N D 6
RF2
G N D 5
V B A T T
E N
C T R L EAM62430001
LFD21892MDPFC065
MURATA
FL1005
P21
GND3
6
GND1
2
P3
5
P1
3
GND24
L1009
12n
L1013
1.5n
G R F C 1 7_
S W
G R F C 1 8_
S W
MODE
H
H H
LRF1 (CDMA)
RF2 (Global)
CTRLEN
GRFC17_SWGRFC18_SW
TP1
TP2
-
8/15/2019 LG-G2-VS980_Service Manual
29/514
3. TROUBLE SHOOTING
- 29 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Check TP1(L1013) at FL1002
Check if there is any major
difference referring To Figure 3.1.1 (b). Is any signal
detected at that point ?
No
START
B13 NOTCH is OK. See next page to check DUPLEXER
Yes
YesIs there any major difference
referring To Figure 3.1.1 (b)?
Is there any major difference
referring To Figure 3.1.1 (c)?
Check TP2(L1006) at FL1002
Check if there is any major difference referring
To Figure 3.1.1 (c). Is any signal detected at
that point ?
No
No
Yes
Yes
Replace FL1002
Check L1013, L1008, L1009
Replace FL1002
No
Check L1006, L1010, L1011
3.1.1.4 Checking RF signal path (B13 NOTCH)
-
8/15/2019 LG-G2-VS980_Service Manual
30/514
3. TROUBLE SHOOTING
- 30 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
FL1002
B13
NOTCH
TP2 : L1006
TP1 :L1013
-
8/15/2019 LG-G2-VS980_Service Manual
31/514
3. TROUBLE SHOOTING
- 31 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Figure 3.1.1 (b)
Figure 3.1.1 (c)
L 1 0 0 6
2 . 7 n
L1011
EAM62352201
857058FL1002
TRIQUINT_SEMICONDUCTOR
G N D 2
2
G N D 6
8
G N D 7
1 0
G N D 3
4
G N D 1
1
C A S E_
G N D 1
6
G N D 4
5
G N D 5
7
OUTPUT9
G N D 8
1 1
C A S E_
G N D 2
1 2
INPUT3
C A S E_
G N D 3
1 3
15n
L1010
L1008
DNI L1009
12n
L10131.5n
LTE13 notch
Closed to Notch
TP1TP2
-
8/15/2019 LG-G2-VS980_Service Manual
32/514
3. TROUBLE SHOOTING
- 32 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Check TP1(L1006) at FL1001
Check if there is any major
difference referring To Figure 3.1.1 (b). Is any signaldetected at that point ?
No
START
All DCN Rx check is completed.
If the phone still do not work change Main Board
Yes
YesIs there any major difference
referring To Figure 3.1.1 (b)?
Is there any major difference
referring To Figure 3.1.1 (c)?
Check TP2(L1114) at FL1001
Check if there is any major difference referring
To Figure 3.1.1 (c). Is any signal detected at
that point ?
Check TP3(C1012) at FL1001
Check if there is any major difference referring
To Figure 3.1.1 (c). Is any signal detected at
that point ?
No
No
No
Yes
Yes
Yes
Replace FL1001
Check L1006, L1010, L1011
Replace FL1001
Replace FL1001
No
Check L1114, L1025
3.1.1.5 Checking RF signal path (DCN DUPLEXER)
-
8/15/2019 LG-G2-VS980_Service Manual
33/514
3. TROUBLE SHOOTING
- 33 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
FL1001
DCN
DUPLEXER
TP3 : C1012
TP1 : L1006
TP2 : L1114
-
8/15/2019 LG-G2-VS980_Service Manual
34/514
3. TROUBLE SHOOTING
- 34 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Figure 3.1.1 (b)
Figure 3.1.1 (c)
12n
L1025
L 1 0 0 6
2 .
7 n
L 1 1 3 8
3 .
9 n
L1011
10n
L1005
DNI
C10 16 3 3p
EPCOS
FL1001
EAM62330801
B7654
ANT6
RX1 3
TX 1
GND12
GND5 9
GND28
RX2 4
GND3
5
GND4
7
33pC1012
L 1 1 1 4
6 .
2 n
15n
L1010C1171
6.2n
L1012
0.5p
L 1 1 1 5
6 .
2 n
PRX_1X/DO_BC0_INM
PRX_1X/DO_BC0_INP
Closed to Duplxer Closed to WTR1605
Closed to NotchTP2 TP3
TP1
-
8/15/2019 LG-G2-VS980_Service Manual
35/514
3. TROUBLE SHOOTING
- 35 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
3.1.2 PCS 1X/DO Rx
Rx TEST SETUP
- Test Band : US PCS
- Test Channel : 600- SID : 18 (DO : Default Sector ID)
- Sector Power : -30 dBm
1. Check
DC Power Supply circuit
START
2. Check WTR XO
3.Check RF Signal path
Re download S/W, Cal
* There are no Test Points on the IQ Data Line. So It is impossible to check the IQ Data Wave form
-
8/15/2019 LG-G2-VS980_Service Manual
36/514
3. TROUBLE SHOOTING
- 36 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
WTR1605
(U2003)
DUPLEXER
(FL1003)
DIPLEXER
(FL1005)
SPDT
(U1004)
MS-156C
(SW1003)
-
8/15/2019 LG-G2-VS980_Service Manual
37/514
3. TROUBLE SHOOTING
- 37 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
3.1.2.1 Checking DC Power supply circuit (+1.3V_VREG)
START
No
DC Power supply Circuit is OK.
See next Page to check XO circuit
Yes
Check TP1(C2011)
+1.3V_VREG 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
Check TP2(C2036)
+2.05V_VREG is OK?
Yes
Check TP3(C2045)
+1.8V_VREG is OK?
-
8/15/2019 LG-G2-VS980_Service Manual
38/514
3. TROUBLE SHOOTING
- 38 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
(+1.3V_VREG)
Bottom Side
TP1 : C2011
(+1.3V_VREG)
WTR1605
(U2003)
4 2
1 2 7
1 3 6
9 7
1 1 1
1 0 8
5 1
6 7
8 3
4 4
1 1 7
9 8
1 1 6
1 1 8
4 0
6 5
7 6
6 6
5 3
8 5
3 7
5 5
2 4
3 1
2 5
2 8
2 6
8 7
109
139
131
138
130
140
132
141
133
126
119
112
95
103TX_HB
TX_MB4
TX_MB3
TX_MB2
TX_MB1
TX_LB4
TX_LB3
TX_LB2
TX_LB1
TX_BB_IP
TX_BB_IM
TX_BB_QP
TX_BB_QM
DAC_REF
V D D_
D I O
V D D_
R F 1_
D_
F E
V D D_
R F 1_
D_
L B L O
V D D_
R F 1_
D_
M B L O
V D D_
R F 1_
G_
B B
V D D_
R F 1_
G_
L N A
V D D_
R F 1_
G_
P L L
V D D_
R F 1_
G_
V C O
V D D_
R F 1_
J D E T
V D D_
R F 1_
P_
F E L O_
2
V D D_
R F 1_
P_
P L L
V D D_
R F 1_
P_
V C O
V D D_
R F 1_
S_
P L L
V D D_
R F 1_
S_
V C O
V D D_
R F 1_
T_
D A
V D D_
R F 1_
T_
L O
V D D_
R F 1_
T_
S Y N
V D D_
R F 1_
T_
U P C
V D D_
R F 2_
D_
B B
V D D_
R F 2_
P_
B B
V D D_
R F 2_
P_
V C O
V D D_
R F 2_
S_
V C O
V D D_
R F 2_
T_
B B
V D D_
R F 2_
T_
D A
V D D_
R F 2_
T_
P L L
V D D_
R F 2_
T_
V C O
V D D_
R F 2_
X O
V D D_
R F 1_
P_
F E L O_
1
C 2 0 5 9
1 0 0 n
1 0 0 n
C 2 0 6 0
C 2 0 5 8
1 0 0 n
1 0 0 n
C 2 0 1 9
C 2 0 1 7
1 0 0 n
4 . 7 u
C 2 0 1 1
C 2 0 3 6
4 . 7 u
C 2 0 3 5
1 0 0 n
1 0 0 n
C 2 0 3 4
+1V8_VREG_S3A
C 2 0 1 4
1 0 0 p
2
C 2 0 3 3
1 0 0 n
1 u
C 2 0 4 5
1
2
C 2 0 1 5
1 0 0 n
C 2 0 1 6
1 0 0 n
C 2 0 1 3
1 0 0 n
1 0 0 n
C 2 0 1 2
1 0 0 n
C 2 0 6 1
TX_OUT_1X/DO_BC1
TX_OUT_1X/DO_BC0
+1V3_VREG_L4
+2V05_VREG_L15
WTR1_TXBB_Q_P
WTR1_TXBB_Q_M
WTR1_TXBB_I_M
WTR1_TXBB_I_P
WTR1_DAC_IREF
TP1
-
8/15/2019 LG-G2-VS980_Service Manual
39/514
3. TROUBLE SHOOTING
- 39 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
(+2.05V_VREG / +1.8V_VREG)
Bottom Side
TP2 : C2036(+2.05V_VREG)
TP3 : C2045
(+1.8V_VREG)
WTR1605
(U2003)
4 2
1 2 7
1 3 6
9 7
1 1 1
1 0 8
5 1
6 7
8 3
4 4
1 1 7
9 8
1 1 6
1 1 8
4 0
6 5
7 6
6 6
5 3
8 5
3 7
5 5
2 4
3 1
2 5
2 8
2 6
8 7
109
139
131
138
130
140
132
141
133
126
119
112
95
103TX_HB
TX_MB4
TX_MB3
TX_MB2
TX_MB1
TX_LB4
TX_LB3
TX_LB2
TX_LB1
TX_BB_IP
TX_BB_IM
TX_BB_QP
TX_BB_QM
DAC_REF
V D D_
D I O
V D D_
R F 1_
D_
F E
V D D_
R F 1_
D_
L B L O
V D D_
R F 1_
D_
M B L O
V D D_
R F 1_
G_
B B
V D D_
R F 1_
G_
L N A
V D D_
R F 1_
G_
P L L
V D D_
R F 1_
G_
V C O
V D D_
R F 1_
J D E T
V D D_
R F 1_
P_
F E L O_
2
V D D_
R F 1_
P_
P L L
V D D_
R F 1_
P_
V C O
V D D_
R F 1_
S_
P L L
V D D_
R F 1_
S_
V C O
V D D_
R F 1_
T_
D A
V D D_
R F 1_
T_
L O
V D D_
R F 1_
T_
S Y N
V D D_
R F 1_
T_
U P C
V D D_
R F 2_
D_
B B
V D D_
R F 2_
P_
B B
V D D_
R F 2_
P_
V C O
V D D_
R F 2_
S_
V C O
V D D_
R F 2_
T_
B B
V D D_
R F 2_
T_
D A
V D D_
R F 2_
T_
P L L
V D D_
R F 2_
T_
V C O
V D D_
R F 2_
X O
V D D_
R F 1_
P_
F E L O_
1
C 2 0 5 9
1 0 0 n
1 0 0 n
C 2 0 6 0
C 2 0 5 8
1 0 0 n
1 0 0 n
C 2 0 1 9
C 2 0 1 7
1 0 0 n
4 . 7 u
C 2 0 1 1
C 2 0 3 6
4 . 7 u
C 2 0 3 5
1 0 0 n
1 0 0 n
C 2 0 3 4
+1V8_VREG_S3A
C 2 0 1 4
1 0 0 p
2
C 2 0 3 3
1 0 0 n
1 u
C 2 0 4 5
1
2
C 2 0 1 5
1 0 0 n
C 2 0 1 6
1 0 0 n
C 2 0 1 3
1 0 0 n
1 0 0 n
C 2 0 1 2
1 0 0 n
C 2 0 6 1
TX_OUT_1X/DO_BC1
TX_OUT_1X/DO_BC0
+1V3_VREG_L4
+2V05_VREG_L15
WTR1_TXBB_Q_P
WTR1_TXBB_Q_M
WTR1_TXBB_I_M
WTR1_TXBB_I_P
WTR1_DAC_IREF
TP3
TP2
-
8/15/2019 LG-G2-VS980_Service Manual
40/514
3. TROUBLE SHOOTING
- 40 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
3.1.2.2 Checking WTR XO circuit
START
YES
Replace Main B/D
NO
Check TP1(C2050)Is it 19.2MHz?
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 U6001 and then check
TP1(C2050)
-
8/15/2019 LG-G2-VS980_Service Manual
41/514
3. TROUBLE SHOOTING
- 41 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Bottom Side
TP1 : C2050
(XO_OUT_A0)
WTR1605
(U2003)
86
100
45
89
80
93
60
79120
105
121
88
114
96DNC4
DNC5
GP_DATA2
GP_DATA1
GP_DATA0
XO_IN
VTUNE_PRX
RBIAS
DNC3
SSBI_PRX_DRX
SSBI_TX_GNSS
RX_ON
RF_ON
DNC1
0R2004
4.75KR2005
DNIC2052
100pC2050
WTR1_SSBI_PRX_DRX
WTR1_SSBI_TX_GPS
RX_ON1
RF_ON1
XO_OUT_A0
TP1
-
8/15/2019 LG-G2-VS980_Service Manual
42/514
3. TROUBLE SHOOTING
- 42 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
3.1.2.3 Checking RF signal path (DIPLEXER)
Check TP1(C1096) at FL1005.
Check if there is any majordifference referring To Figure 3.1.2 (b). Is any signal
detected at that point ?
No
START
DIPLEXER is OK. See next page to check B13 NOTCH
Yes
YesIs there any major difference
referring To Figure 3.1.2 (b)?
Is there any major difference
referring To Figure 3.1.2 (b)?
Check TP2(L1024) at FL1005
Check if there is any major difference referring
To Figure 3.1.2 (b). Is any signal detected at
that point ?
No
No
Yes
Yes
Replace FL1005
Check C1096, L1111 , U1004
Replace FL1005
No
Check L1024
-
8/15/2019 LG-G2-VS980_Service Manual
43/514
3. TROUBLE SHOOTING
- 43 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
DIPLEXER
(FL1005)
TP2 :L1024
TP1: C1096
-
8/15/2019 LG-G2-VS980_Service Manual
44/514
3. TROUBLE SHOOTING
- 44 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Figure 3.1.2 (b)
FL1003 ACMD-7411
75
94
2
8
1
36 ANT TX
RX1
RX2
GND1
GND2 GND5
GND3 GND4
L 1 0 0 6
2 . 7 n
C1014
DNI
L 1 0 2 4
4 . 3 n
L1011
10n
EAM62352201
857058FL1002
TRIQUINT_SEMICONDUCTOR
G N D 2
2
G N D 6
8
G N D 7
1 0
G N D 3
4
G N D 1
1
C A S E_
G N D 1
6
G N D 4
5
G N D 5
7
OUTPUT9
G N D 8
1 1
C A S E_
G N D 2
1 2
INPUT3
C A S E_
G N D 3
1 3
L1015
DNI
2
1
FL1001 B7654
ANT6
RX1 3
TX 1
GND12
GND5 9
GND28
RX2 4
GND35
GND4 7
15n
L1010
L1008
DNI
3 9 p
C 1 0 9 6
1
2
L1007
DNI
2
1
EAM62430001
LFD21892MDPFC065
MURATA
FL1005
P21
GND36
GND12
P35
P13
GND24
L1009
12n
L10131.5n
LTE13 notch
Closed to Notch
13'02/04
TP2
TP1
-
8/15/2019 LG-G2-VS980_Service Manual
45/514
3. TROUBLE SHOOTING
- 45 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
3.1.2.4 Checking RF signal path (PCS DUPLEXER)
Check TP1(L1024) at FL1003
Check if there is any major
difference referring To Figure 3.1.2 (b). Is any signaldetected at that point ?
No
START
All PCS Rx check is completed.
If the phone still do not work change Main Board
Yes
YesIs there any major difference
referring To Figure 3.1.2 (b)?
Is there any major difference
referring To Figure 3.1.2 (c)?
Check TP2(C1035) at FL1003
Check if there is any major difference referring
To Figure 3.1.2 (c). Is any signal detected at
that point ?
Check TP3(C1037) at FL1003
Check if there is any major difference referring
To Figure 3.1.1 (c). Is any signal detected at
that point ?
No
No
No
Yes
Yes
Yes
Replace FL1003
Check L1024, L1015
Replace FL1003
Check C1035, C1037
No
Check C1035 , L1019
-
8/15/2019 LG-G2-VS980_Service Manual
46/514
3. TROUBLE SHOOTING
- 46 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
FL1003
PCS
DUPLEXER
TP3 : C1037
TP2 : C1035
TP1 : L1024
-
8/15/2019 LG-G2-VS980_Service Manual
47/514
3. TROUBLE SHOOTING
- 47 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
Figure 3.1.2 (b)
Figure 3.1.2 (c)
TP1
FL1 00 3 ACM D-74 11
75
94
2
8
1
36 ANT TX
RX1
RX2
GND1
GND2 GND5
GND3 GND4
L1021
10n
L1019
10n
C1172
DNIC1014
DNI
L 1 0 2 4
4 .
3 n
L 1 1 2 7
1 .
8 n
L1015
DNI
2
1
C 10 37 3 3p1
33pC10221
2
33pC10351
2
33pC1040
1
2
33pC1043
1
2
PRX_1X/DO_BC1_INM
PRX_1X/DO_BC1_INP
Place closed to Duplxer Place closed to WTR1605
BC1 1X RX
TP2
TP3
-
8/15/2019 LG-G2-VS980_Service Manual
48/514
3. TROUBLE SHOOTING
- 48 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
3.1.3 DCN 1X/DO Tx
DCN Tx TEST SETUP
- Test Band : US Cellular
- Test Channel : 384- SID : 28 (DO : Default Sector ID)
- Sector Power : -55 dBm
1. Check
DC Power Supply circuit
START
2. Check WTR XO
3.Check RF Signal path
Re download S/W, Cal
* There are no Test Points on the IQ Data Line. So It is impossible to check the IQ Data Wave form
-
8/15/2019 LG-G2-VS980_Service Manual
49/514
3. TROUBLE SHOOTING
- 49 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
DCN TX RF PATH
WTR1605
(U2003)
DUAL PAM
(U1001) DIPLEXER
(FL1005)
NOTCH
(FL1002)
DUPLEXER
(FL1001)
SPDT
(U1004)
MS-156C
(SW1003)
-
8/15/2019 LG-G2-VS980_Service Manual
50/514
3. TROUBLE SHOOTING
- 50 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
3.1.3.1 Checking DC Power supply circuit (+1.3V_VREG/ +2.05V_VREG/ +1.8V_VREG)
START
No
DC Power supply Circuit is OK.
See next Page to check XO circuit
Yes
Check TP1(C2011)
+1.3V_VREG 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
Check TP2(C2036)
+2.05V_VREG is OK?
Yes
Check TP3(C2045)
+1.8V_VREG is OK?
-
8/15/2019 LG-G2-VS980_Service Manual
51/514
3. TROUBLE SHOOTING
- 51 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
(+1.3V_VREG)
Bottom Side
TP1 : C2011
(+1.3V_VREG)
WTR1605
(U2003)
4 2
1 2 7
1 3 6
9 7
1 1 1
1 0 8
5 1
6 7
8 3
4 4
1 1 7
9 8
1 1 6
1 1 8
4 0
6 5
7 6
6 6
5 3
8 5
3 7
5 5
2 4
3 1
2 5
2 8
2 6
8 7
109
139
131
138
130
140
132
141
133
126
119
112
95
103TX_HB
TX_MB4
TX_MB3
TX_MB2
TX_MB1
TX_LB4
TX_LB3
TX_LB2
TX_LB1
TX_BB_IP
TX_BB_IM
TX_BB_QP
TX_BB_QM
DAC_REF
V D D_
D I O
V D D_
R F 1_
D_
F E
V D D_
R F 1_
D_
L B L O
V D D_
R F 1_
D_
M B L O
V D D_
R F 1_
G_
B B
V D D_
R F 1_
G_
L N A
V D D_
R F 1_
G_
P L L
V D D_
R F 1_
G_
V C O
V D D_
R F 1_
J D E T
V D D_
R F 1_
P_
F E L O_
2
V D D_
R F 1_
P_
P L L
V D D_
R F 1_
P_
V C O
V D D_
R F 1_
S_
P L L
V D D_
R F 1_
S_
V C O
V D D_
R F 1_
T_
D A
V D D_
R F 1_
T_
L O
V D D_
R F 1_
T_
S Y N
V D D_
R F 1_
T_
U P C
V D D_
R F 2_
D_
B B
V D D_
R F 2_
P_
B B
V D D_
R F 2_
P_
V C O
V D D_
R F 2_
S_
V C O
V D D_
R F 2_
T_
B B
V D D_
R F 2_
T_
D A
V D D_
R F 2_
T_
P L L
V D D_
R F 2_
T_
V C O
V D D_
R F 2_
X O
V D D_
R F 1_
P_
F E L O_
1
C 2 0 5 9
1 0 0 n
1 0 0 n
C 2 0 6 0
C 2 0 5 8
1 0 0 n
1 0 0 n
C 2 0 1 9
C 2 0 1 7
1 0 0 n
4 . 7 u
C 2 0 1 1
C 2 0 3 6
4 . 7 u
C 2 0 3 5
1 0 0 n
1 0 0 n
C 2 0 3 4
+1V8_VREG_S3A
C 2 0 1 4
1 0 0 p
2
C 2 0 3 3
1 0 0 n
1 u
C 2 0 4 5
1
2
C 2 0 1 5
1 0 0 n
C 2 0 1 6
1 0 0 n
C 2 0 1 3
1 0 0 n
1 0 0 n
C 2 0 1 2
1 0 0 n
C 2 0 6 1
TX_OUT_1X/DO_BC1
TX_OUT_1X/DO_BC0
+1V3_VREG_L4
+2V05_VREG_L15
WTR1_TXBB_Q_P
WTR1_TXBB_Q_M
WTR1_TXBB_I_M
WTR1_TXBB_I_P
WTR1_DAC_IREF
TP1
-
8/15/2019 LG-G2-VS980_Service Manual
52/514
3. TROUBLE SHOOTING
- 52 - Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use Only
(+2.05V_VREG/ +1.8V_VREG)
Bottom Side
TP2 : C2036
(+2.05V_VREG)
TP3 : C2045
(+1.8V_VREG)
WTR1605
(U2003)
4 2
1 2 7
top related