LG L Prime D337 User manual

Internal Use Only
Service Manual
LG-D337
Date: Aug, 2014 / Issue 0.9

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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
2. PERFORMANCE...................................................................... 5
2.1 Product Name............................................................................................5
2.2 Supporting Standard..............................................................................5
2.3 Main Parts & Solution .............................................................................6
2.4 HW Features ...............................................................................................6
2.5 SW Features................................................................................................7
2.6 H/W SPEC.................................................................................................. 12
3. TROUBLE SHOOTING .......................................................... 21
3.1 WCDMA Rx Part...................................................................................... 21
3.2 WCDMA Tx Part ...................................................................................... 33
3.3 GSM Rx Part ............................................................................................. 49
3.4 GSM Tx Part Troubleshooting........................................................... 59
3.5. BT/WiFi...................................................................................................... 67
3.6. GPS............................................................................................................. 69
3.7. FM Radio .................................................................................................. 72
3.8 DTV.............................................................................................................. 74
3.9 Power TS.................................................................................................... 76
3.10. Charging TS .......................................................................................... 80
3.11. USB TS..................................................................................................... 82
3.12.USB TS...................................................................................................... 83
3.13. Accelerometer & Compass Sensor on/o TS.......................... 99
3.14. Proximity Sensor on/o TS...........................................................100
3.15. Touch Sensor Trouble Shooting.................................................102
3.16. Vibrator Trouble Shooting............................................................104
3.17. 8M Main Camera TS ........................................................................106
3.18. VT Camera TS.....................................................................................108
3.19. Main LCD TS .......................................................................................110
4. DOWNLOAD.......................................................................112
5. BLOCK DIAGRAM..............................................................129
6. CIRCUIT DIAGRAM ............................................................141
7. BGA PIN MAP .....................................................................158
8. PCB LAYOUT.......................................................................178
9. CALIBRATION.....................................................................182
10. HIDDEN MENU.................................................................200
11. DISASSEMBLE GUIDE......................................................235
12. EXPLODED VIEW & REPLACEMENT PART LIST .............242

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Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1. INTRODUCTION
LGE Internal Use Only
1. Introduce
1.1Purpose
This manual provides the information necessary to repair, calibration, description and download the features
of this model.
1.2Regulatory 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 through or 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.
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 Limitations
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.

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1. INTRODUCTION
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E. Notice of Radiated Emissions
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.
F. Pictures
The pictures in this manual are for illustrative purposes only; your actual hardware may look slightly different.
G. Interference and Attenuation
A phone may interfere with sensitive laboratory equipment, medical equipment, etc. Interference from
unsuppressed engines or electric motors may cause problems.
H. Electrostatic Sensitive Devices
ATTENTION
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.

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1. INTRODUCTION
2.PERFPRMANCE
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2. PERFORMANCE
2.1 Product Name
LG- D337 : WCDMA850/900/1900/2100+EGSM/GSM850/DCS1800/PCS1900
(HSPA + / GPRS Class 12 / EDGE Class 12(Rx only))
2.2 Supporting Standard
Item Feature Comment
Supporting Standard WCDMA(FDD1,2,5,8)/
EGSM/GSM850/DCS1800/PCS1900
Frequency Range WCDMA(FDD1) TX : 1920 – 1980 MHz
WCDMA(FDD1) RX : 2110 – 2170 MHz
WCDMA(FDD2) TX : 1852.4– 1907.6 MHz
WCDMA(FDD2) RX : 1932.4 – 1987.6 MHz
WCDMA(FDD5) TX : 824 – 849 MHz
WCDMA(FDD5) RX : 869 – 894 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
DCS1800 TX : 1710 – 1785 MHz
DCS1800 RX : 1805 – 1880 MHz
PCS1900 TX : 1850 – 1910 MHz
PCS1900 RX : 1930 – 1990 MHz
Application Standard WAP 2.0
2.1 Product Name
LG- D337 : WCDMA850/900/1900/2100+EGSM/GSM850/DCS1800/PCS1900
(HSPA + / GPRS Class 12 / EDGE Class 12(Rx only))
2.2 Supporting Standard

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2.3 Main Parts : Solution
Item Part Name Comment
AP Chip MT6582 (MTK)
RF Chip MT6166 (MTK)
2.4HW Features
Item Feature Comment
Form Factor DOP type
Battery 1) Capacity
Standard : Li-Ion, 2540mAh
2) Packing Type : Changeable
Size Standard : 138.15 X 70.6 X 10.7
Weight 124g With Battery
Volume 62cc Without Batter
PCB 10 STG Layers , 0.8t
Charging time 4.3hrs
@ Power Off /
2540mAh
RX sensitivity WCDMA(FDD1) : -106.7 dBm
WCDMA(FDD2) : -106.7 dBm
WCDMA(FDD5) : -103.7 dBm
WCDMA(FDD8) : -103.7 dBm
EGSM : -105 dBm
GSM850 : -105 dBm
DCS 1800 : -105 dBm
PCS 1900 : -105 dBm
2.3 Main Parts : Solution
2.4 HW Features
LGE Internal Use Only
2.3 Main Parts : Solution
Item Part Name Comment
AP Chip MT6582 (MTK)
RF Chip MT6166 (MTK)
2.4HW Features
Item Feature Comment
Form Factor DOP type
Battery 1) Capacity
Standard : Li-Ion, 2540mAh
2) Packing Type : Changeable
Size Standard : 138.15 X 70.6 X 10.7
Weight 124g With Battery
Volume 62cc Without Batter
PCB 10 STG Layers , 0.8t
Charging time 4.3hrs @ Power Off /
2540mAh
RX sensitivity WCDMA(FDD1) : -106.7 dBm
WCDMA(FDD2) : -106.7 dBm
WCDMA(FDD5) : -103.7 dBm
WCDMA(FDD8) : -103.7 dBm
EGSM : -105 dBm
GSM850 : -105 dBm
DCS 1800 : -105 dBm
PCS 1900 : -105 dBm

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TX output
power
WCDMA/
GSM/
GPRS
WCDMA : 24dBm/3.84MHz,+1/-3dBm
EGSM : 32.5 dBm
GSM850 : 32.5 dBm
DCS 1800 : 30 dBm
PCS 1900 : 30 dBm
Class3(WCDMA)
Class4 (EGSM)
Class4 (GSM850)
Class1 (PCS)
Class1 (DCS)
GPRS compatibility GPRS Class 12
EDGE compatibility EDGE Class 12 Downlink(Rx) Only
SIM card type Plug-In SIM
3V /1.8V
Display Main LCD
TFT Main LCD(5”,480(H) X 854(V))
Built-in Camera 8M AF / 1.3M VT
Status Indicator N/A
Keypad Function Key : 4
Back Key : 3
Function Key: Home,
Back, menu, SIM-
switch
Back Key : Volume
up, down, power key
ANT Main : Internal Fixed Type
System connector 5 Pin micro USB
Ear Phone Jack 3.5Phi, 4 Pole, Stereo
PC synchronization Yes
Memory NAND Flash : 8GByte
SDRAM : 1GByte LPDDR3
Speech coding FR, EFR, HR, AMR
Data & Fax Built in Data & Fax support
Vibrator Built in Vibrator
BlueTooth V4.0

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MIDI(for Buzzer Function) 128 Poly
Music Player MP3,AAC,(e)AAC+,WMA,RA,WAV
Video Player Playback : 30fps 1080p (H.264/263, MPEG4/2, WMV9,
VC1, VP8, DivX, XVID)
Recording : 30fps 1080p (H.264/263, MPEG4/8)
30fps 720p (Wi-Fi display)
Camcorder MPEG4/8
Voice Recording Yes
Speaker Phone mode
Support
Yes
Travel Adapter Yes In-box item
CDROM No
Stereo Headset Yes
Data Cable Yes In-box item
T-Flash(External Memory) No
Specification
GSM WCDMA
Stand by current
(Sleep & Idle
Avg.)
Under 4.5mA @ P.P 5 Under 4.5mA @ DRX 7
Talk current Under 400 mA
@GSM Level 5
Under 600mA
@ Max Power Avg.
Under 400 mA
@ Tx -10dBm Avg.

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2.5SW Features
Item Feature Comment
RSSI 0 ~ 5 Levels
Battery Charging 0 ~ 20 Levels
Key Volume 0 ~ 7 Level
Audio Volume 0 ~ 15 Level
Time / Date Display Yes
Multi-Language Yes depending on build language
Quick Access Mode Phone / Messaging / Browser/
Applications
Phone / Contact / Messaging /
Applications
PC Sync Yes
Speed Dial Yes Voice mail center -> 1 key
Profile Yes not same with feature phone
setting
CLIP / CLIR Yes
Phone Book Name / Number / Email / Groups /
Postal addresses / Organizations / IM
/ Note / Nickname / Website / Event /
There is no limitation on the
number of items.
It depends on available memory
amount.
Last Dial Number Yes
Last Received Number Yes
Last Missed Number Yes
Search by
Number/Name
Yes
Group Yes There is no limitation on the
number of items.
It depends on available memory
amount.
Fixed Dial Number Yes
Service Dial Number No
Own Number Yes My Profile (add/edit/delete are
2.5 SW Features

2. PERFORMANCE
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supported)
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 Yes
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 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
Download Over the Web
Game No
Calendar Yes
Memo Yes There is no limitation on the
number of items.
It depends on available memory
amount.