LG LG-H845 User manual

LGE Internal Use OnlyLGE Internal Use Only
MODEL : LG-H845
Internal Use Only
MOBILE PHONE
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL
Date: May, 2016 / Issue
1.0
(VIETMOBILE.VN)

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
Table Of Contents
1. INTRODUCTION................................................. 1
1.1 Purpose
1.2 Regulatory
Information
2. PERFORMANCE................................................... 3
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..........................................11
3.1 XO Block
3.2 Transceiver DC Power Supply Circuit
3.3 DC-DCBlock
3.4 ASM Block
3.5 GSM Part
3.6 WCDMA Part
3.7 LTE Part
3.8 BT/WiFi Part
3.9 FM Radio
3.10 GPS
3.11 NFC
3.12 Power
3.13 Display
3.14 Motor
3.15 Hall IC
3.16 Sensor
3.17 Camera
3.18 Audio
4. BLOCK DIAGRAM…........................................... 56
5. CIRCUIT DIAGRAM............................................ 72
6. BGA PIN MAP............................................................ 100
7. PCB LAYOUT…........................................................... 101
8. HIDDEN MENU.......................................................... 109
9. DOWNLOAD…........................................................... 113
10. CALIBRATION...........................................................114
11.DISASSEMBLE GUIDE............................................. 115
12. EXPLODED VIEW………………………………………... 117
13. REPLACEMENT PART LIST..…………………………. 118
1

Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only 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.
2

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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(FDD4) 1710 –1755 2110 –2155
WCDMA(FDD5) 824 –849 869 –894
WCDMA(FDD8) 880 –915 925 –960
LTE(BAND1) 1920 –1980 2110 –2170
LTE(BAND2) 1850 –1910 1930 –1990
LTE(BAND3) 1710 –1785 1805 –1880
LTE(BAND4) 1710 –1755 2110 –2155
LTE(BAND5) 824 –849 869 –894
LTE(BAND7) 880 –915 925 –960
LTE(BAND8) 880 –915 925 –960
LTE(BAND12) 699 –716 729 –746
LTE(BAND17) 704 –716 734 –746
LTE(BAND20) 832 –862 791 –821
LTE(BAND28) 703 –748 758 –803
LTE(BAND38) 2570 –2620 2570 –2620
LTE(BAND40) 2300 –2400 2300 –2400
3

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2. PERFORMANCE
2.2 HW Features
List Type / Spec.
1. Phone Type DOP Type
2. Size 149.4x73.9x7.7 (unit : mm)
3. Weight 157g ( with Battery )
4. Battery 2800mAh (Typ)
5.Chipset MSM8976 : Qualcomm (4 : 1.8GHz / 4 : 1.4GHz)
6. Memory 3GB(SDRAM LPDDR3) + 32GB eMMC v5.1
7. LCD Size 5.3 inch
Display Type Active matrix TFT, Transmissive Type
Color 16.7M colors
Resolution QHD (2560 X1440)
8. Touch Type 5.3 inch Capacitive type
9.Main Camera (16M) Type CMOS image sensor
Resolution 5312(H) X 2988(V) pixels.
Image Scaling Down 16:9 -5312 X2988 (16M)
4:3 –3984 X2988 (12M)
1:1 –2976 X2976 (9M)
Format Image : JPG, Video : MP4, 3gpp(MMS)
4

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2. PERFORMANCE
2.2 HW Features
10. Audio Receiver 12 X 06 X 2.65T Receiver
Speaker 20 X 9 X 3.5T (1W FSD) 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/a/ac
Throughput Max 433Mbps
Depend on environment 0 ~ 50m (depend on environment)
13. GPS type A-GPS
14. FM type FM Radio, 3.5pi Ear-jack
5

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2. PERFORMANCE
2.3 RSSI Display
2.4 Current consumption
RSSI Bar Specification Unit
LTE WCDMA GSM
BAR 5->4 -84 dBm ±4dB -88 dBm ±4dB -90 dBm ±3dB
Antenna B
AR
BAR 4->3 -94 dBm ±4dB -93 dBm ±4dB -95 dBm ±3dB
BAR 3->2 -104 dBm ±4dB -99 dBm ±4dB -98 dBm ±3dB
BAR 2->1 -114 dBm ±4dB -103 dBm ±4dB -102 dBm ±3dB
BAR 1->0 -127 dBm ±4dB -109 dBm ±4dB -104 dBm ±3dB
BAR 1-> No service No service No service No service
항 목 Specification
VOLTE WCDMA GSM
1. Sleep Mode Under 35mA Under 35mA Under 35mA
2. Sleep mode (AVG Sleep & Idle) Under 35mA
@ 2.56s Under 35mA
@ DRX 7 Under 35mA @ P.P 5
3. Sleep mode (connecting Earjack)Under 40.5mA @ 2.56s Under 40.5mA @ DRX 7 Under 40.5mA @ P.P 5
6

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2. PERFORMANCE
2.5 Battery bar
Battery Bar Specification Battery Bar Specification
Bar 20(Full) 98%이상 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 1%이하
Bar 11 -> Bar 10 53% -> 52% Low battery pop-up 15% , 5%, 1%
Bar 10 -> Bar 9 48% -> 47%
7

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2. PERFORMANCE
2.6 SW Specification
Item Feature Comment
RSSI 0 ~ 5 Levels
Battery Charging 0 ~ 20 Levels Android 6.0.1(M OS)
Key Volume 0 ~ 7 Level Yes
Audio Volume 0 ~ 15 Level Yes
Time / Date Display Yes
Multi-Language Yes English, Espanol, Franch, Korea, Chinese etc.
Quick Access Mode Phone/Contact/Message/Camera/Browser
PC Sync Yes LG Bridge
Speed Dial Yes We provide speed dial.
Profile Yes not same with feature phone setting
CLIP / CLIR Yes
Phone Book
Name / Number / Email / Chat Id / Website / Postal addresses / Organizations /
Groups / Birthday Notes / Ringtone There is no limitation on the number of items. It depends on available memory amount.
Last Received Number Yes 2000 items
Last Missed Number Yes 20000 items
Search by Number / Name Name / Number Support
Group Yes There is no limitation on the number of items.
It depends on available memory amount.
Fixed Dial Number No FDN does not support.
Service Dial Number No
Own Number Yes Read only
(add/edit/delete are not supported)
8

Copyright ⓒ2016 LG Electronics. Inc. All right
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2. PERFORMANCE
2.6 SW Specification
Voice Memo No
Call Reminder No Missed call popup
Network Selection Automatic
Mute Yes
Call Divert Yes
If Call Divert means Call Forwarding, it’s support
ed
Call Barring Yes Supported
Call Charge (AoC) No Call Charge does not support.
Call Duration Yes Support
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 No
Send / Receive / Save No
MMS MPEG4 Yes
Send / Receive / Save Yes
Long Message No
Cell Broadcast No
Download Yes
Game No
Calendar Yes
Memo Yes There is no limitation on the number of items.
It depends on available memory amount.
World Clock Yes
9

Copyright ⓒ2016 LG Electronics. Inc. All right
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2. PERFORMANCE
2.6 SW Specification
Unit Convert No
Stop Watch Yes
Wall Paper Yes
WAP Browser No WAP stack and wml are not supported.
Download Melody / Wallpaper Yes Over web browser
SIM Lock No H840 TPO Medel is supported
SIM Toolkit Yes
MMS Yes
EONS Yes
CPHS Yes
ENS No
Camera Yes Rear : 16M OIS / 8M wide, Front : 8M
Digital Zoom: x4
JAVA No Android do not support JAVA
Voice Dial No
IrDa No IrRC
Bluetooth Yes BT 4.2 BLE
FM radio Yes
GPRS Yes Class 33
EDGE Yes Class 33
Hold / Retrieve Yes
Conference Call Yes Voice : Max. 6
DTMF Yes
Memo pad Yes QMemo+
TTY No
AMR Yes
SyncML No
IM Yes Hangout
Email Yes
10

Copyright ⓒ2016 LG Electronics. Inc. All right
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LGE Internal Use Only Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
3.1 XO Block
Checking Flow
Image
Circuit Diagram
The output frequency(19.2MHz) of XO(X4100) is used as the reference one of
WTR2965(U1500,U1501) and PM8956(U4100) internal VCO
BOTTOM
TP1
U1500
TP1
Check TP1.
Is it 19.2MHz?
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
START
U1501
TP2
TP2
11

Copyright ⓒ2016 LG Electronics. Inc. All right
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LGE Internal Use Only Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
Circuit Diagram
Check TP1.
Is +1V_RF OK?
YES
Check TP2
Is +1.8V_RF 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
U1500
TP1
BOTTOM
Checking Flow Image
START
TP2
TP1
U1501
TP2
12

Copyright ⓒ2016 LG Electronics. Inc. All right
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LGE Internal Use Only Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
Circuit Diagram
Check next step
Check TP1(+VPA0)
0.5V ≤ TP1 ≤ 4.2V ?
Check U1403 Physical
Damage or soldering
condition
NO
YES
TP1
(+VPA0)
BOTTOM
U1403
TP1
(+VPA0)
Checking Flow Image
START
13

Copyright ⓒ2016 LG Electronics. Inc. All right
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LGE Internal Use Only Copyright ⓒ2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
Checking Flow Image
Circuit Diagram
Checking FEMiD Block
Check TP1, Is TP2 High Level?
(2.5V≤TP1 ≤3.1V)
(1.7V≤TP2 ≤1.9V)
YES
Check Next step
The Problem may be
Logic part
Refer to Logic trouble
shoot
NO
Check U1202 physical Damage
or soldering condition
OK?
NOT
GOOD
Replace U1202
BOTTOM
U1202
TP1(2.7V)
TP2(1.8V)
TP2(1.8V) TP1(2.7V)
START
14

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BOTTOM
TP4
(G1800/1900 Rx)
U1501
TP1
(G850/900 Rx)
3. TROUBLE SHOOTING
Checking Flow
Image
GSM850/900/1800/1900 Rx
Check TP1/2/3/4 .
Does the signal exist?
Check next step
Check Component
above RF signal path
YES NO
Check
Transceiver physical damage
or soldering condition
OK?
NOT GOOD
Replace U1501
START
TP2
(G1900 Rx)
TP3
(G1800 Rx)
Circuit Diagram
TP1(G850/900 Rx)
TP2(G1900 Rx)
TP4(G1800/1900 Rx) TP3(G1800Rx)
15

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U1501
3. TROUBLE SHOOTING
Checking DRX RF signal path (GSM1800/1900)
BOTTOM
TP1(2.7V)
TP2(1.8V)
TP3
(G1800/1900 RX)
U1100
Check TP1,
TP2 High Level?
(2.5V≤TP1 ≤3.1V)
(1.7V≤TP2 ≤1.9V)
Check next step
The Problem may be
Logic part
Refer to Logic
trouble shoot
NO
Check Transceiver
physical damage
or soldering condition
OK?
Replace U1501
NOT GOOD
Check TP3
Does the signal exist? Check G1800/1900
and U1100 Soldering
NO
YES
Checking Flow Image
START
Check TP4
Does the signal exist? Check G1800/1900
and U1103 Soldering
NO
YES
YES
U1103
TP4
(G1800/1900 RX)
16

Copyright ⓒ2016 LG Electronics. Inc. All right
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3. TROUBLE SHOOTING
3.5.2 GSM PART (DRX)
Checking DRX RF signal path (GSM1800/1900)
TP2(1.8V)
TP1(2.7V)
TP3(G1800/1900 RX)
TP4(G1800/1900 RX)
17

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BOTTOM
TP2(+VPA0)
U1300
TP4 (GSM LB Tx)
TP3 (GSM HB Tx)
TP6(DCS/PCS)
TP5(G900/G850)
3. TROUBLE SHOOTING
GSM850/900/1800/1900 Tx
Check TP1
+VPWR OK?
START
The Problem may be Other part
Check Logic part
YES
NO
YES
Check DC-DC Power Block
Refer to 3.3
NO
Check TP2
3.2V≤TP2≤4.2V?
Check TP3/4
If GSM850/900 Over 31dBm?
If DCS/PCS Over 29dBm?
NO
Check next step
Check component
above RF signal path
YES
Check TP5/6
If GSM850/900 Over 9dBm?
If DCS/PCS Over 7dBm? YES Check U1300 soldering
NO
Check Transceiver
physical damage
or soldering condition
OK?
NOT GOOD
Replace U1501
TP1(+VBAT)
Checking Flow Image
18

Copyright ⓒ2016 LG Electronics. Inc. All right
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3. TROUBLE SHOOTING
3.5.3 GSM PART (TX)
GSM850/900/1800/1900 Tx
TP1(+VBAT) TP2(+VPA0)
TP6(GSM 1800/1900 Tx)
TP5(GSM 850/900 Tx)
TP3 (GSM HB Tx)
TP4 (GSM LB Tx)
19