LG H990ds User manual

Internal Use Only
MOBILE PHONE
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL
Date: Oct. 2016 / Issue 1.0
MODEL : LG-H990ds
1
(VIETMOBILE.VN)

Copyright ⓒ2016 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 DC Power Supply Circuit
3.3 DC-DC Block
3.4 FEMiD Block
3.5 LTE PART
3.6 WCDMA PART
3.7 GSM PART
3.8 BT/WiFi PART
3.9 GPS PART
3.10 NFC PART
3.11 Power
3.12 Charger
3.13 Audio
3.14 Display
3.15 Camera
3.16 Sensor
3.17 Motor
3.18 Hall IC
3.19 USB
3.20 SIM Card interface trouble
4. BLOCK DIAGRAM…........................................... 94
5. CIRCUIT DIAGRAM............................................. 107
6. BGA PIN MAP.................................................................. 140
7. PCB LAYOUT…............................................................... 143
8. HIDDEN MENU................................................................... 149
9. DOWNLOAD….................................................................. 153
10. CALIBRATION................................................................ 154
11. DISASSEMBLE GUIDE.................................................. 155
12. EXPLODED VIEW………………………………………….. 159
13. REPLACEMENT PART LIST..……………………………. 160
2

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
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

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
2. PERFORMANCE
2.1 Band Specification
Support Band TX Freq (MHz) RX Freq (MHz)
EGSM 880 – 915 925 – 960
GSM850 824 – 849 869 – 894
DCS1800 1710 – 1785 1805 – 1880
PCS1900 1850 – 1910 1930 – 1990
WCDMA(FDD1) 1920 – 1980 2110 – 2170
WCDMA(FDD2) 1850 – 1910 1930 – 1990
WCDMA(FDD3) 1710 – 1785 1805 – 1880
WCDMA(FDD4) 1710 – 1755 2110 – 2155
WCDMA(FDD5) 824 – 849 869 – 894
WCDMA(FDD8) 880 – 915 925 – 960
TD-SCDMA(B34)
2010~2025 2010~2025
TD-SCDMA(B39)
1880~1920 1880~1920
Support Band TX Freq (MHz) RX Freq (MHz)
LTE1 1920 – 1980 2110 – 2170
LTE2 1850 – 1910 1930 – 1990
LTE3 1710 – 1785 1805 – 1880
LTE4 1710 – 1755 2110 – 2155
LTE5 824 – 849 869 – 894
LTE7 2500 – 2570 2620 – 2690
LTE8 880 – 915 925 – 960
LTE12 699 – 716 729 – 746
LTE17 704 – 716 734 – 746
LTE20 832 – 862 791 - 821
LTE26 814 – 849 859 – 894
LTE28 703 – 748 758 – 803
LTE38 2570 – 2620 2570 – 2620
LTE39 1880~1920 1880~1920
LTE40 2300 – 2400 2300 – 2400
LTE41 2496 – 2690 2496 – 2690
4

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
2. PERFORMANCE
2.2 HW Features
항목Type / Spec.
1. Phone Type DOP
2. Size 159.7mm x 78.1mm x 7.7mm
3. Weight 174g ( with Battery )
4. Battery 3200mAh(Typ) 3.85V, (Li-ion)
5. MSM Chipset MSN8996 2.15GHz Quad core
6. Memory 64GB(UFS) + 4GB(LPDDR4)
External Memory(SD Card) : Up to 2TB
7. LCD 5.7" (2560x1440) , 16.7M Colors, TFT
8. Main Camera 16MP@30fps/8MP@30fps wide angle+ 5MP@30fps wide angle
9. Audio 14 X 14 X 3.3T Speaker
10. Bluetooth Bluetooth 4.2 BLE
11. WLAN 2.4GHz IEEE 802.11 b/g/n/ac , 5GHz IEEE 802.11 a/n/ac
12. LTE 3GPP 36.101
5

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
2. PERFORMANCE
2.3 RSSI Display
RSSI BAR GSM RSSI
WCDMA/
TD-SCDMA
RSSI
LTE RSSI Comment
BAR 5->4 - 90dBm±3dB - 87dBm±4dB -85dBm ±4dB
1. Call Connect
ed & CPIPH Le
vel=-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
Measure RSSI after 10 seconds when you change power.
For GSM, Operating Mode -> GPRS
MS_TXPWR_MAX_CCH -> 5 / Maximum Uplink Transmit Power Level -> 33dBm
For WCDMA/TD-SCDMA, Uplink Parameters.
After Maximum Uplink Transmit Power Level set to max power,(24dBm)
progress the measurement
6

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
2. PERFORMANCE
2.4 Current consumption
Specification
GSM WCDMA/
TD-SCDMA LTE
1. Sleep Mode
(Sleep & Idle Avg)30mA↓@ P.P 5 30mA↓@ DRX 7 30mA↓@ 2.56s
2. Standby
(With Earjack) 32.5mA↓@ P.P 5 32.5mA↓@ DRX 7 32.5mA↓@ 2.56s
3. Standby
(BT Connected) 33.5mA↓33.5mA↓33.5mA↓
4. Talk Mode -GSM LVL5 : 400mA↓@ Avg
-Max Pwr :
870mA↓@Avg
-Tx 10dBm :
270 mA↓@ Avg
-Max Pwr(LCD Off)
870mA↓@Avg
-Tx 10dBm(LCD Off)
370mA↓@ Avg
5. No SVC Mode 220mA↓220mA↓220mA↓
6. Power Off Mode 700uA↓700uA↓700uA↓
7

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
2. PERFORMANCE
2.5 Battery bar
Battery Bar Specification Battery Bar Specification
Bar 20(Full) Over 98% Bar 9 -> Bar 8 43% -> 42%
Bar 20 -> Bar 19 98% -> 97% Bar 8 -> Bar 7 38% -> 37%
Bar 19 -> Bar 18 93% -> 92% Bar 7 -> Bar 6 33% -> 32%
Bar 18 -> Bar 17 88% -> 87% Bar 6 -> Bar 5 28% -> 27%
Bar 17 -> Bar 16 83% -> 82% Bar 5 -> Bar 4 23% -> 22%
Bar 16 -> Bar 15 78% -> 77% Bar 4 -> Bar 3 16% -> 15%
Bar 15 -> Bar 14 73% -> 72% Bar 3 -> Bar 2 13% -> 12%
Bar 14 -> Bar 13 68% -> 67% Bar 2 -> Bar 1 8% -> 7%
Bar 13 -> Bar 12 63% -> 62% Bar 1 -> Bar 0 3% -> 2%
Bar 12 -> Bar 11 58% -> 57% Power off 2% ->1%
Bar 11 -> Bar 10 53% -> 52% Low battery pop-up 15% , 5%, 1%
Bar 10 -> Bar 9 48% -> 47%
※Cut Off Voltage : 3.3 ±0.1 V, if[SOC(%) 2% 1%], cut off.
8

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
2. PERFORMANCE
2.6 SW Specification
Item Feature Comment
RSSI 0 ~ 5 Levels
Battery Charging 0 ~ 100 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 / Applications Phone / Messaging / Application
PC Sync No LG Bridge
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 /
Postal addresses / Organizations / I
M / Note / Nickname / Website / Ev
ent /
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 It depends on operator
requirements.
(OCT. 2016 : RGS, TCL, BELL,
VIV, USC(MX), VDF, ORG SCA)
Own Number Yes My Profile (add/edit/delete are
supported)
9

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
2. PERFORMANCE
2.6 SW Specification
Voice Memo Yes Support the HD Audio 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 Supported bearer : CS only
EMS Melody / Picture
Send / Receive / Save
No EMS does not supported.
MMS MPEG4
Send / Receive / Save
Yes Send / Receive : Yes
Save : depends on content ty
pe
Support video content type
list
1. video/mp4
2. video/h263
3. video/3gpp2
video/3gpp
Long Message MAX 2000 characters The standard of Open vender
Cell Broadcast Yes It depends on country.
CB app supports Cell Broadcast mes
sage
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

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
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 It depends on operator
requirements.
SIM Toolkit Yes
MMS Yes The default MMS client is LG
Messaging application.
EONS Yes
CPHS Yes V4.2
ENS No
Camera Yes 16M AF / Digital Zoom : x8
JAVA No
Voice Dial No Partially Compatible.
It can be supported by
GMS(Google search).
It depends on country and
language.
IrDa No IrRC
Bluetooth Yes Ver. 4.2
FM radio Yes
GPRS Yes Class 33
EDGE Yes Class 33
Hold / Retrieve Yes
Conference Call Yes Max. 6
DTMF Yes
Memo pad No
TTY No
AMR Yes
SyncML No
IM Yes Google Hangout
Email Yes
11

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
The output frequency(19.2MHz) of XO(X4100) is used as the reference one of WTR3925 and PM8996 internal VCO
3.1.1 Checking XO Block
Image
Checking Flow
Check TP1
Is it 19.2MHz?
START
The Problem may be
Logic partRefer to
Logic trouble shoot
Replace X4100 and then
check TP1
Is it 19.2MHz? XO Circuit is OK.
Check next step
XO Circuit is OK.
Check next step
NO
NO
YES
YES
Circuit Diagram
TOP
U1400
(WTR3925)
TP1(XO IN)
TP1(XO_IN)
12

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
The output frequency(19.2MHz) of XO(X4100) is used as the reference one of WTR4905 and PM8996 internal VCO
3.1.2 Checking XO Block
Image
Checking Flow
Check TP1
Is it 19.2MHz?
START
The Problem may be
Logic partRefer to
Logic trouble shoot
Replace X4100 and then
check TP1
Is it 19.2MHz? XO Circuit is OK.
Check next step
XO Circuit is OK.
Check next step
NO
NO
YES
YES
Circuit Diagram
TOP
U1401
(WTR4905)
TP1(XO_IN)
TP1(XO IN)
13

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
Checking Transceiver 1 DC Power Supply Circuit
3.2 Transceiver DC Power Supply Circuit
Check TP1
+1V0_RF is OK?
START
YES
Check TP2
+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
TP2(1.8V)
TP1(1.0V)
U1400
TOP
TP2(1.8V)
TP1(1.0V)
U1400
(RFIC)
ImageChecking Flow
Circuit Diagram
14

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
Checking Transceiver 2 DC Power Supply Circuit
3.2 Transceiver DC Power Supply Circuit
Check TP1
+1V0_RF is OK?
START
YES
Check TP2
+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
TP2(1.8V)
TP1(1.0V)
U1401
TOP
TP2(1.8V)
TP1(1.0V)
U1401
(RFIC)
ImageChecking Flow
Circuit Diagram
15

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
Checking DC/DC Block
3.3 DC/DC Block
START
Check next step
Check
TP1(+VPA0)
0.5V ≤ TP1 ≤ 4.2V ?
Check U1601
Physical Damage or
soldering condition
NO
YES
TOP
U1601
TP1(+VPA0)
TP1(+VPA0)
U1601
(DC/DC)
ImageChecking Flow
Circuit Diagram
16

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
Checking FEMiD Block
3.4 FEMiD(Front-End Module integrated Duplexer) Block
START
YES
Check Next step
The Problem may be
Logic part
Refer to Logic
trouble shoot
NO
Check
U1200 physical
Damage or soldering
condition
OK
NOT
GOOD
Replace U1101
TOP
TP1(2.7V)
TP2(1.8V)
U1101
TP2(1.8V)
TP1(2.7V)
U1101
(FEMID)
ImageChecking Flow
Check
TP1/TP2 High Level?
(2.3V≤TP1 ≤3.0V)
(1.65V≤TP2 ≤1.95V)
Circuit Diagram
17

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
Checking Rx signal path(LTE B1/B2/B3/B4/B5/B8/B12/B17/B20/B26/B28/B39)
Check
TP1/2/3/~/7/8/9/10
Signal exist?
START
Check next step
Check Component
above RF signal
path and
FEMiD Block
YES
NO
Check
Transceiver
physical damage
or soldering
condition
OK
NOT GOOD
Replace U1101
TOP
TP2(B2 Rx)
U1101
(M499)
TP3(B3 RX)
TP5(B8 RX)
TP7(B20 RX)
TP1(B1/B4 RX)
TP6(B12/17 Rx)
3.5.1 LTE PART - B1/B2/B3/B4/B5/B8/B12/B17/B20/B26/B28/B39 PRx
ImageChecking Flow
TP4(B5/26 RX)
TP8(B28A RX)
TP9(B28B RX)
TP10(B39 RX)
18

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
Circuit Diagram
B1/B4
3.5.1 LTE PART - B1/B2/B3/B4/B5/B8/B12/B17/B20/B26/B28/B39 PRx
TP1(B1/B4 Rx) TP2(B2 Rx) B2/PCS
B3/DCS TP4(B5/B26 Rx) B5/B26
TP3(B3/DCS Rx)
19

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
Circuit Diagram
3.5.1 LTE PART - B1/B2/B3/B4/B5/B8/B12/B17/B20/B26/B28/B39 PRx
B8 TP6(B12/B17 Rx) B12/B17
TP5(B8 Rx)
B20 TP8(B28A Rx) B28A
TP7(B20 Rx)
B28B
TP9(B28B Rx) TP10(B39 Rx) B39
20