LG LG-M700TV User manual

MODEL : LG-M700TV
CONFIDENTIAL
MOBILE PHONE
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL
Date: July, 2017 / Issue 1.0
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means),
publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you
have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual.
The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service
Manual
Copyright ⓒ2017 LG Electronics. Inc. All right
reserved. Only training and service purposes

Copyright ⓒ2017 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
Table Of Contents
1. INTRODUCTION................................................. 3
1.1 Purpose
1.2 Regulatory Information
2. PERFORMANCE................................................... 4
2.1 Band Specification
2.2 HW Features
2.3 RSSI Display
2.4 Current consumption
2.5 Battery bar
2.6 SW Specification
3. TROUBLE SHOOTING..........................................12
3.1 Checking XO Block
3.2 Transceiver WTR2965 DC Power Supply Circuit
3.3 DC-DC(QFE2101) Block
3.4 FEMiD Block
3.5 GSM, WCDMA, LTE PART
3.6 GPS Part
3.7 BT/WiFi Part
3.8 FM Radio Part
3.9 Power
3.10 USBB
3.11 Audio
3.12 Touch
3.13 Sensor
3.14 MAIN CAMERA
3.15 VT CAMERA
3.16 LCD
3.17 NFC Part
4. BLOCK DIAGRAM…........................................... 55
5. CIRCUIT DIAGRAM............................................ 64
6. BGA PIN MAP............................................................ 87
7. PCB LAYOUT…........................................................... 89
8. HIDDEN MENU.......................................................... 93
9. DOWNLOAD…........................................................... 96
10. CALIBRATION........................................................... 97
11. DISASSEMBLE GUIDE............................................. 98
12. EXPLODED VIEW………………………………………... 101
13. REPLACEMENT PART LIST..…………………………. 102
2

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1. INTRODUCTION
1.1 Purpose
This manual provides the information necessary to repair, calibration, description and download the features of this model.
1.2 Regulatory Information
A. Security
This material is prohibited to share and release to unauthorized person, in accordance with the regulations, LG Electronics, Civil / criminal
responsibility in accordance with the relevant provisions violate.
B. Precautions for repair
•In case of Disassembly or Assembly to repair product, be careful of a product failure 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 personal should ground themselves by using a wrist, strap when exchange system board.
•When repair 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 board or parts like EEPROM to the Factory, use the protective package as described.
3

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2. PERFORMANCE
2.1 Band Specification
Support Band TX Freq (MHz) RX Freq (MHz)
WCDMA(FDD1) 1920 – 1980 2110 – 2170
WCDMA(FDD2) 1850 – 1910 1930 – 1990
WCDMA(FDD3) 1710 – 1785 1805 – 1880
WCDMA(FDD5) 824 – 849 869 – 894
WCDMA(FDD8) 880 – 915 925 – 960
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
LTE7 2500 – 2570 2620 – 2690
LTE17 704 – 716 734 – 746
LTE28 703 – 748 758 – 803
4

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2. PERFORMANCE
2.2 HW Features
List Type / Spec.
1. Phone Type DOP Type
2. Size 142.5mm x 69.3mm x 8.1mm
3. Weight 149 g ( with Battery )
4. Battery 3,000mAh(Typ) (Li-Ion), 2,900mAh(Min.)
5.Chipset MSM8940 1.4GHz Octa core
6. Memory 32GB(EMMC) + 3GB(LPDDR3) External Memory(SD Card) : Up to 2TB
7. LCD Size 5.5 inch
Display Type Active matrix TFT, Transmissive Type
Color 16.7M colors
Resolution FHD (1080(H)X2160(V)), 442ppi
8. Touch Type 5.5 inch Capacitive type
9. Main Camera (5M) Type CMOS image sensor
Resolution 4160(H) X 3120(V) pixels.
Image Scaling Down 4:3(13MP – 4160x3120) , 4:3(6.2MP – 2880x2160)
16:9(9.7MP – 4160x2080) , 16:9(3.7MP – 2560x1440)
18:9(8.7MP – 4160x2080) , 18:9(3.3MP – 2560x1280)
1:1(9.7MP – 3120x3120) , 1:1(2.1MP – 1440x1440)
Format Image : JPG, Video : MP4
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2. PERFORMANCE
2.2 HW Features
10. Audio Receiver 12 X 06 X 2.0T Receiver
Speaker 16 X 12 X 2.6T 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 40Mbps (SDIO Driver performance)
Depend on environment 0 ~ 50m (depend on environment)
13. GPS type A-GPS, GLONASS
14. FM type FM Radio, 3.5pi Ear-jack
6

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2. PERFORMANCE
2.3 RSSI Display
2.4 Current consumption
Item
Specification
WCDMA GSM LTE
1. Sleep Mode Under 9mA Under 9mA Under 9mA
2. Sleep : connector Ear jack Under 10mA Under 10mA Under 10mA
3. Current(Sleep & Idle AVG) Under 10mA @ DRX 7 Under 10mA @ P.P 5 Under 9mA @ 2.56s
RSSI BAR GSM RSSI
WCDMA/
TD-SCDMA
RSSI
LTE RSSI Comment
BAR 5->4 - 90dBm±3dB - 87dBm±4dB -85dBm ±4dB
1. Call
Connected &
CPIPH
Level=-3.3
BAR 4->3 - 95dBm±3dB - 92dBm±4dB -95dBm ±4dB
BAR 3->2 - 98dBm±3dB - 98dBm±4dB -105dBm ±4dB
BAR 2->1 - 102dBm±3dB - 102dBm±4dB -115dBm ±4dB
BAR 1->0 - 104dBm±3dB - 108dBm±4dB -128dBm ±4dB
7

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2. PERFORMANCE
2.5 Battery bar
Battery Bar Specification
BAR 20 (Full) 98% over
remain%
BAR 20 --> 19 98% ◊97%
BAR 19 --> 18 93% ◊92%
BAR 18 --> 17 88% ◊87%
BAR 17 --> 16 83% ◊82%
BAR 16 --> 15 78% ◊77%
BAR 15 --> 14 73% ◊72%
BAR 14 --> 13 68% ◊67%
BAR 13 --> 12 63% ◊62%
BAR 12 --> 11 58% ◊57%
BAR 11 --> 10 53% ◊52%
BAR 10 --> 9 48% ◊47%
BAR 9 --> 8 43% ◊42%
BAR 8 --> 7 38% ◊37%
BAR 7 --> 6 33% ◊32%
BAR 6 --> 5 28% ◊27%
BAR 5 --> 4 23% ◊22%
BAR 4 --> 3 16% ◊15%
BAR 3 --> 2 13% ◊12%
BAR 2 --> 1 8% ◊7%
BAR 1 --> 0 3% ◊2%
Low Battery Pop-up 15% , 5%, 1%
8

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2. PERFORMANCE
2.6 SW Specification
Item Feature Comment
RSSI 0 ~ 5 Levels
Battery Charging 0 ~ 20 Levels
Key Volume 0 ~ 15 Level
Audio Volume 0 ~ 15 Level
Time / Date Display Yes
Multi-Language Yes depending on build language
Quick Access Mode Phone / Messaging / Camera / Galle
ry / Chrome
PC Sync Yes
Speed Dial Yes Voice mail center -> 1 key
Profile Yes not same with feature phone s
etting
CLIP / CLIR Yes
Phone Book Name / Number / Email / Groups /
Groups / Address / Ringtone /
Notification sound / Phonetic name
/ Organizations / IM / Note /
Nickname / Website / Event
There is no limitation on the n
umber of items.
It depends on available memor
y amount.
Last Dial Number Yes
Last Received Number Yes
Last Missed Number Yes
Search by Number/Na
me
Yes
Group Yes There is no limitation on the n
umber of items.
It depends on available memor
y amount.
Fixed Dial Number Yes
Service Dial Number No
Own Number Yes My Profile (add/edit/delete are
supported)
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2. PERFORMANCE
2.6 SW Specification
Voice Memo Yes Support voice recorder
Call Reminder No
Network Selection Automatic
Mute Yes
Call Divert Yes
Call Barring Yes
Call Charge (AoC)No
Call Duration Yes
SMS (EMS) There is no limitation on the number of items
.
It depends on available memory amount.
EMS does not support.
SMS Over GPRS No
EMS Melody / Picture
Send / Receive / Save
No
MMS MPEG4
Send / Receive / Save
Yes Send / Receive : Yes
Save : depends on content type
Support video content type li
st
1. video/mp4
2. video/h263
3. video/3gpp2
video/3gpp
Long Message MAX 2000 characters The standard of Open vender
Cell Broadcast Yes
Download Over the Web
Game No
Calendar Yes
Memo Ye s There is no limitation on the number o
f items.
It depends on available memory amo
unt.
World Clock Yes
10

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2. PERFORMANCE
2.6 SW Specification
Unit Convert No
Stop Watch Yes
Wall Paper Yes
WAP Browser No Support only web browser bas
ed on webkit. WAP stack and
wml are not supported.
Download Melody /
Wallpaper
Yes Over web browser
SIM Lock No Operator Dependent
SIM Toolkit Yes
MMS Yes Google MMS Client
EONS Yes
CPHS Yes V4.2
ENS No
Camera Yes 13M AF /
Digital Zoom : x4
JAVA No
Voice Dial Yes Google search
IrDa No
Bluetooth Yes Ver. 4.2
FM radio Yes
GPRS Yes Class 33
EDGE Yes Class 33
Hold / Retrieve Yes
Conference Call Yes
DTMF Yes
Memo pad No
TTY No
AMR Yes
SyncML No
IM Yes Google Hangout
Email Yes
11

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3. TROUBLE SHOOTING
The output frequency(19.2MHz) of XO(X4100) is used as the reference one of WTR2965 and PM8940 internal VCO
3.1.1 Checking XO Block
Image
Checking Flow
Check TP1/TP2
Is it 19.2MHz?
START
The Problem may be
Logic part Refer to
Logic trouble shoot
Replace X4100 and then
check TP1/TP2
Is it 19.2MHz? XO Circuit is OK.
Check next step
XO Circuit is OK.
Check next step
NO
NO
YES
YES
Circuit Diagram
U1800
(WTR2965)
TP1(XO_IN)
TP1(XO IN)
BTM
3.1 Checking XO Block
U1801
(WTR2965)
TP2 (XO_IN)
BTM
TP2(XO IN)
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3. TROUBLE SHOOTING
Checking Transceiver WTR2965 DC Power Supply Circuit
3.2.1 Transceiver WTR2965 DC Power Supply Circuit
Image
Checking Flow
Check TP1/TP3
+1V_RF is OK?
START
YES
Check TP2/TP4
+1.8V_RF is OK?
YES
Check next step
The Problem may be Logic part
Refer to Logic trouble shoot
The Problem may be Logic part
Refer to Logic trouble shoot
NO
NO
Circuit Diagram
TP2(1.8V)
TP1(1V)
BTM
3.2 Transceiver WTR2965 DC Power Supply Circuit
BTM
TP4(1.8V)
TP3(1V)
U1800
(WTR2965) U1801
(WTR2965)
TP1(1V) TP2(1.8V)
TP3(1V)
TP4(1.8V)
13

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3. TROUBLE SHOOTING
Checking DC-DC(QFE2101) Block
3.3 DC-DC(QFE2101) Block
Image
Checking Flow
BTM
TP2
Circuit Diagram
TP1
START
NO
NO
YES
YES
Check TP2.
0.5V≤TP2≤4.2V ?
Check TP1.
VPWR is OK?
The cause might be in logic part.
Refer to logic trouble shoot.
Check U1601 Physical Damage
or soldering condition.
Change the Main Board
TP1
TP2
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TP2(1.8V)
TP1(2.7V)
U1306
(FEMiD)
3. TROUBLE SHOOTING
Checking FEMiD Block
3.4 FEMiD Block
Image
Checking Flow
Check TP1, TP2 High Level?
(2.5V≤TP1 ≤3.1V)
(1.7V≤TP2 ≤1.9V)
START
YES
Check Next step
The Problem may be Logic part
Refer to Logic trouble shoot
NO
Check
U1306 physical Damage
or soldering condition
OK?
NOT
GOOD
Replace U1306
Circuit Diagram
TP2(1.8V)
TP1(2.7V)
BTM
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3. TROUBLE SHOOTING
3.5.1 GSM, WCDMA, LTE PART - PRx
Image
Checking Flow
Check
TP1/2/3/4/5 Signal exist?
START
Check next step
Check Component
above RF signal path and
FEMiD or Switch Block
YES
NO
Check
Transceiver physical damage
or soldering condition
OK?
NOT GOOD
Replace U1800
BTM
3.5 GSM, WCDMA, LTE PART
U1800
(WTR2965)
TP2(B2/B3/G1800/G1900 PRx)
TP3(B1 PRx) TP4(B7 PRx)
TP1(G850/G900 PRx)
G850/G900
TP1(G850/G900 PRx)
Circuit Diagram
TP2(B2/B3/G1800/G1900 PRx)
B2/B3/G1800/G1900
TP3(B1 PRx)
B1/B4
TP4(B7 PRx)
B7
Checking Rx signal path (GSM 850/900/1800/1900 WCDMA B1/B2/B3, LTE B1/B2/B3/B7)
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3. TROUBLE SHOOTING
3.5.1 GSM, WCDMA, LTE PART - PRx
Image
Checking Flow
Check
TP1/2 Signal exist?
START
Check next step
Check Component
above RF signal path
and FEMiD or Switch
Block
YES
NO
Check
Transceiver physical
damage or soldering
condition
OK?
NOT GOOD
Replace U1801
BTM
3.5 GSM, WCDMA, LTE PART
TP1(B5/B8 PRx)
TP2(B17/B28 PRx)
U1501
(WTR2965)
Circuit Diagram
TP1 (B5/B8 PRx)
B5/B8
Checking Rx signal path (WCDMA B5/B8, LTE B5/B17/B28)
TP2(B17/B28 PRx)
B17/B28
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3. TROUBLE SHOOTING
Checking Flow
Check TP1
+VPA0 OK?
START
The Problem may be Other part
Check QFE2101 Logic part
NO
The Problem may be Other part
Check PMI8952 Logic part
Check TP2
3.4V≤TP2≤4.4V?
Check TP3~TP11
If LTE of All band
Over 22dBm?
NO
Check next step
Check component
above RF signal path
and FEMiD block
YES
YES Replace U1600
NO
Check
Transceiver physical damage
or soldering condition
OK?
NOT GOOD
Replace U1800/U1801
YES
NO
YES
Check TP12~TP15
If W CDMA/LTE of All band
Over 0dBm?
3.5.2 GSM, WCDMA, LTE PART - Tx
Image
BOTTOM
U1801
(WTR2965)
U1800
(WTR2965)
3.5 GSM, WCDMA, LTE PART
TP3(B1 Tx)
TP6(B8 Tx) TP7(B5 Tx)
TP1(+VPA0) U1600
(MMPA)
TP4(B2 Tx) TP5(B3 Tx)
TP2(+VPWR)
TP14
(MB_input Tx)
TP9(B28A Tx)
TP11(B7 TX)
TP13
(HB_input TX)
Checking Tx signal path(WCDMA B1/B2/B3/B5/B8, LTE B1/B2/B3/B5/B7/B17/B28)
TP12
(LB_input Tx)
TP10(B28B Tx)
TP8(B17 Tx)
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3. TROUBLE SHOOTING
Circuit Diagram
U1600
(MMPA)
TP1(+VPA0)
3.5.2 GSM, WCDMA, LTE PART - Tx
TP2(+VPWR)
3.5 GSM, WCDMA, LTE PART
MMPA Input
TP12(LB_input Tx)
HB_input Tx
TP13(HB_input TX)
LB_input Tx
TP14
(MB_input Tx)
MB_input Tx
19

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3. TROUBLE SHOOTING
Circuit Diagram
MMPA Output
3.5.2 GSM, WCDMA, LTE PART - Tx
3.5 GSM, WCDMA, LTE PART
TP3(B1 Tx)
TP4(B2 Tx)
TP5(B3 Tx)
TP7(B5 Tx)
TP6(B8 Tx)
B3 Tx
B2 Tx
B1 Tx
B8 Tx
B5 Tx
TP8(B17Tx)
TP9(B28ATx)
TP10(B28BTx)
B7 Tx
TP11(B7Tx)
20