LG LG-D295 User manual

Internal Use Only
Service Manual
LG-D295
Date: Oct, 2014 / Issue 1.0

- 2 - Copyright © 2014 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 Specication...............................................................................................5
2. PERFORMANCE...................................................................... 8
2.1 Product Name............................................................................................8
2.2 Supporting Standard..............................................................................8
2.3 Main Parts : GSM Solution.....................................................................8
2.4 HW Features ...............................................................................................9
2.5 HW SPEC ................................................................................................... 11
3. TROUBLE SHOOTING .......................................................... 24
3.1 WCDMA Rx Part...................................................................................... 24
3.2 WCDMA Tx Part Trouble(B1).............................................................. 47
3.3 WCDMA Tx Part Trouble(B5).............................................................. 61
3.4 GSM Rx Part Troubleshooting(850/900 Rx)................................. 75
3.5 GSM Rx Part Troubleshooting(1800/1900 Rx) ........................... 84
3.6GSM Tx Part Troubleshooting(850/900 Tx)................................... 95
3.7 GSM Tx Part Troubleshooting(1800/1900_Tx).........................103
3.8 Power TS..................................................................................................111
3.9 Charging TS............................................................................................115
3.10 USB TS....................................................................................................117
3.11 Audio TS................................................................................................118
3.12 6 AXIS Sensor on/o TS ..................................................................132
3.13 Proximity Sensor on/o TS............................................................135
3.14 Touch Sensor Trouble Shooting..................................................137
3.15 Vibrator Trouble Shooting.............................................................139
3.16 Camera TS ............................................................................................141
3.17 Main LCD TS ........................................................................................145
3.18 BT/Wi TS .............................................................................................147
3.19 GPS TS....................................................................................................150
3.20 FM TS......................................................................................................153
4. DOWNLOAD.......................................................................155
5. BLOCK DIAGRAM..............................................................172
6. CIRCUIT DIAGRAM ............................................................181
7. BGA PIN MAP .....................................................................198
8. PCB LAYOUT.......................................................................204
9. CALIBRATION.....................................................................207
10. HIDDEN MENU.................................................................226
11. DISASSEMBLE GUIDE......................................................259
11.1 DISASSEMBLE GUIDE ................................................................259
11.2 Shield Can Rework Guide..............................................................264
11.3 Rework Caution Points ...................................................................269
12. EXPLODED VIEW & REPLACEMENT PART LIST .............270

- 3 - Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1. INTRODUCTION
1. Introduction
1.Introduction
This manual provides the information necessary to repair, calibration, description and download the features
of this model.
1.1 Purpose
1.2 Regulatory Information
A. Security
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 throu
g
h or
A.
Security
g
connected to it. The manufacturer will not be responsible for any charges that result from such
unauthorized use.
B. Incidence of Harm
If 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
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
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.
E. Notice of Radiated Emission
This model complies with rules regarding radiation and radio frequency emission as defined by local
‐4‐
regulatory agencies. In accordance with these agencies, you may be required to provide information such as
the following to the end user.

- 4 - Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1.Introduction
F.Pictures
Thepicturesinthismanualareforillustrativepurposesonly;youractualhardwaremaylookslightlydifferent.
H.ElectrostaticSensitiveDevices
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
ATTENTION
Boards,whichcontainElectrostaticSensitiveDevice(ESD),areindicatedbythesign.Following
informationisESDhandling:
•Service
p
ersonnelshould
g
roundthemselvesb
y
usin
g
awriststra
p
whenexchan
g
es
y
stemboards.
p g y g p g y
•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
described
.
‐5‐

- 5 - Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1.3 Specication
KEY FEATURES
• Android4.4-(KitKat)
• 4.5”TouchScreenWVGA(480x800)
• 8MPAFwithFlash
• 3GMobileHotspot
ENHANCED USER EXPERIENCE
• Android4.4
• ProximitySensor–locksthetouchscreenandbuttonswhiletalkingonthephone
• MotionSensor–Accelerometer
• USBChargingviaComputer
• AirplaneMode(RFOff)
DESIGN
• SleekandStylishDesign
• 4.5“WVGALCDScreen
• CapacitiveTouchScreen–Plasticwithfastandaccurateresponse
• MicroUSB/ChargingPort

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LGE Internal Use Only
1. INTRODUCTION
CAMERA/VIDEO
• 8MPAF
• CameraResolutions:3264(H)x2448(V)Pixels
• ImageEditor:zoom,rotate,cropimages
• Brightness,ISO,WhiteBalance,*ColorEffects,Timer
• Cheeseshutter–takephotowithvoicecommand.
• VideoResolutions:640x480320x240176x144Pixels
MULTIMEDIA
• MusicPlayerforMP3,WMA,andUnprotectedAAC
• StereoSoundviaHeadsetorBluetooth
• MusicLibrary–OrganizedbyArtists,Albums,Songs,andPlaylists
• RepeatandShuffleMusicPlaybackModes
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
• ListentoMusicwithOptionalStereoBluetoothHeadset**
• SendUser-GeneratedPictures(JPEG)andVideosviaBluetoothWirelessTechnology
*Dependsonavailablememory.
**Accessoriessoldseparately.

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LGE Internal Use Only
1. INTRODUCTION
VOICE/AUDIO
• One-TouchSpeakerphone*
• Speaker-IndependentVoiceCommands
• Voice-ActivatedDialing
• TexttoSpeech
• MP3MusicRingerSupport
TOOLS & DATA
• AndroidApps:Alarm/Clock,Browser,Calculator,Calendar(CorporateorGoogle),Camera,Contacts,
 Email,Gallery,Gmail,Google+,Maps,Messaging,Messenger,MusicPlayer,Phone,Places,PlayBooks,
 PlayMovies,PlayMusic,PlayStore,Talk,VideoPlayer,VoiceRecorder,Youtube
• Navigation–spokenturn-by-turndirectionsshowingreal-timetraffic
• Wi-FiConnectivity–IEEE802.11b/g/n
• A-GPSSupportforEnhancedLocationAccuracy
SPECIFICATIONS
• Technology:GSM/WCMDA
• Frequencies:GSM850,900,1800,1900
WCDMA2100,900
• DataTransmission:WCMDA,GPRS
• Dimensions:127.5X67.9X11.65(mm)
• Display:4.5”,WVGA(480x800)pixels
• StandardBattery:1,900[mAh]
ACCESSORIES
• StandardBattery
• TravelAdapterandUSBCable*
• StereoHeadset

2. PERFORMANCE
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LGE Internal Use Only
2. PERFORMANCE
2.1 Product Name
LG-D295:WCDMA900/2100+EGSM/GSM850/DCS/PCS(HSDPA21MbpsHSUPA5.76Mbps))
2.2 Supporting Standard
LG-D295 Product SPEC
4
2.1 Product Name
LG-D295 : WCDMA900/2100+EGSM/GSM850/DCS/PCS(HSDPA 21Mbps HSUPA 5.76Mbps)
2.2 Supporting Standard
Item Feature Comment
Supporting Standard
WCDMA(FDD1,8)/EGSM/GSM850/DCS1800/PCS1900
with seamless handover
Phase 2+(include AMR)
SIM Toolkit : Class 1, 2, 3, C-E
Frequency Range WCDMA(FDD1) TX : 1920 – 1980 MHz
WCDMA(FDD1) RX : 2110 – 2170 MHz
WCDMA(FDD8) TX : 880 - 915 MHz
WCDMA(FDD8) RX : 925 – 960 MHz
EGSM TX : 880 – 915 MHz
EGSM RX : 925 – 960 MHz
GSM850 TX : 824 – 849 MHz
GSM850 RX : 869 – 894 MHz
GSM900 TX : 880 – 915 MHz
GSM900 RX : 925 – 960 MHz
DCS1800 TX :1710 – 1785 MHz
DCS1800 RX : 1805 – 1880 MHz
PCS1900 TX : 1850 – 1910 MHz
PCS1900 RX : 1930 – 1990 MHz
Application Standard
2.3 Main Parts : GSM Solution
Item Part Name Comment
AP Chip MSM8212
CP Chip MSM8212
2.3 Main Parts : GSM Solution
LG-D295 Product SPEC
4
2.1 Product Name
LG-D295 : WCDMA900/2100+EGSM/GSM850/DCS/PCS(HSDPA 21Mbps HSUPA 5.76Mbps)
2.2 Supporting Standard
Item Feature Comment
Supporting Standard
WCDMA(FDD1,8)/EGSM/GSM850/DCS1800/PCS1900
with seamless handover
Phase 2+(include AMR)
SIM Toolkit : Class 1, 2, 3, C-E
Frequency Range WCDMA(FDD1) TX : 1920 – 1980 MHz
WCDMA(FDD1) RX : 2110 – 2170 MHz
WCDMA(FDD8) TX : 880 - 915 MHz
WCDMA(FDD8) RX : 925 – 960 MHz
EGSM TX : 880 – 915 MHz
EGSM RX : 925 – 960 MHz
GSM850 TX : 824 – 849 MHz
GSM850 RX : 869 – 894 MHz
GSM900 TX : 880 – 915 MHz
GSM900 RX : 925 – 960 MHz
DCS1800 TX :1710 – 1785 MHz
DCS1800 RX : 1805 – 1880 MHz
PCS1900 TX : 1850 – 1910 MHz
PCS1900 RX : 1930 – 1990 MHz
Application Standard
2.3 Main Parts : GSM Solution
Item Part Name Comment
AP Chip MSM8212
CP Chip MSM8212

2. PERFORMANCE
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2.4 HW Features
LG-D295 Product SPEC
5
2.4 HW Features
List Type / Spec.
1. Phone Type DOP Type
2. Size 127.5X67.9X11.65 (mm)
3. Weight TBD (with battery)
4. Battery 1,900mAh ( typ.), 1,820mAh(min) (Li-Ion)
5.Chipset MSM8212
6. Memory 4GB(eMMC) +1GB(LPDDR2)
7. LCD Size 4.5 inch
Dot 480(H) X 800(V)
Color 16.7M
Display Type TFT, Incell Touch
NTSC 50% (Typ)
Contrast Ratio 1:1000 (Typ)
Pixel Pitch TBD
Color temperature 6000~10000K (TBD)
8. Main Camera (8M) Type BSI CIS Type
Resolution 3264(H) X 2448(V) pixels.
Frame Rate TBD
View Angle 71.2° ±5% (Diagonal)
Image Scaling Down TBD
Pixel x size 1.12um x1.12um

2. PERFORMANCE
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LGE Internal Use Only
LG-D295 Product SPEC
6
10. Audio
1) MIDI MIDI
2) Mono 18 X 10 X 3T Speaker
3) Receiver 12 X 06 X 2.5T Receiver
11. Bluetooth 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