LG LG-P350 User manual
Internal Use Only
Service Manual
LG-P350
Date: January, 2011 / Issue 1.0
- 2 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
Table Of Contents
1. INTRODUCTION..................................................................... 3
1.1 Purpose ........................................................................................................3
1.2 Regulatory Information .........................................................................3
1.3 Abbreviations.............................................................................................5
2. PERFORMANCE...................................................................... 7
2.1 Product Name............................................................................................7
2.2 Supporting Standard..............................................................................7
2.3 Main Parts : GSM Solution.....................................................................7
2.4 HW Features ...............................................................................................8
2.5 SW Features ............................................................................................. 10
2.6 HW SPEC. ................................................................................................. 13
3. TECHNICAL BRIEF................................................................ 19
3.1 GENERAL DESCRIPTION...................................................................... 19
3.2 GSM MODE .............................................................................................. 21
3.3 UMTS MODE............................................................................................ 23
3.4 GPS RECEIVER.......................................................................................... 26
3.5 LO GENERATION and DISTRIBUTION CIRCUIT............................ 26
3.6 OFF-CHIP RF COMPONENTS............................................................. 27
3.7 Digital Baseband(DBB/MSM7227).................................................. 32
3.8 Hardware Architecture........................................................................ 33
3.9 Subsystem (MSM7227) ....................................................................... 35
3.10 Power Block........................................................................................... 38
3.11 External memory interface............................................................. 43
3.12 H/W Sub System.................................................................................. 44
3.13 Audio and sound ................................................................................ 51
3.14 Display..................................................................................................... 57
3.15 Vibrators (Q-Coin Motor) ................................................................. 59
3.16 Compass Sensor.................................................................................. 60
3.17 Motion Sensor...................................................................................... 62
3.18 Main Features....................................................................................... 63
3.19 Main component................................................................................ 64
4. TROUBLE SHOOTING .......................................................... 71
4.1 RF Component ....................................................................................... 71
4.2 SIGNAL PATH........................................................................................... 73
4.3 Checking TCXO Block........................................................................... 76
4.4 Checking GSM TX Module(GSM PAM + FEM) Block................ 78
4.5 Checking WCDMA Block .................................................................... 81
4.6 Checking GSM Block............................................................................ 91
4.7 GPS/WIFI/BT RF Component ............................................................ 99
4.8 GPS/WIFI/BT SIGNAL PATH ..............................................................101
4.9 GPS/WIFI/BT Trouble shooting ......................................................103
4.10 Power ON Troubleshooting..........................................................109
4.11 Charging Trouble shooting...........................................................113
4.12 3M FF Camera trouble....................................................................117
4.13 Audio Trouble.....................................................................................120
4.14 Main LCD trouble..............................................................................132
4.15 Motion Sensor on/off trouble......................................................134
4.16 Compass Sensor on/off trouble..................................................136
4.17 Q coin Motor.......................................................................................138
5. DOWNLOAD.......................................................................140
6. BLOCK DIAGRAM...............................................................153
7. CIRCUIT DIAGRAM ............................................................158
8. BGA Pin Map......................................................................166
9. PCB LAYOUT.......................................................................170
10. CALIBRATION...................................................................172
10.1 General Description.........................................................................172
10.2 Requirement.......................................................................................172
10.3 Setup for RF calibration..................................................................173
10.4 Tachyon Software Installation .....................................................173
10.5 Tachyon Start......................................................................................174
10.6 Overview of RF Calibration...........................................................179
11. STAND ALONE TEST ........................................................183
12. EXPLODED VIEW & REPLACEMENT PART LIST .............190
12.1 EXPLODED VIEW................................................................................190
12.2 Replacement Parts ...........................................................................191
12.3 Accessory .............................................................................................215
- 3 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
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
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.
1. INTRODUCTION
- 4 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
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.
- 5 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
ʹΠΡΪΣΚΘΙΥι ͽͶΝΖΔΥΣΠΟΚΔΤͺΟΔͲΝΝΣΚΘΙΥΣΖΤΖΣΧΖΕ
ΟΝΪΗΠΣΥΣΒΚΟΚΟΘΒΟΕΤΖΣΧΚΔΖΡΦΣΡΠΤΖΤ
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ 6/140
1.3 Abbreviations
For the purposes of this manual, following abbreviations apply:
Offset Phase Locked LoopOPLL
Light Emitting DiodeLED
Low Drop OutputLDO
Liquid Crystal DisplayLCD
Intermediate FrequencyIF
International Portable User IdentityIPUI
Global System for Mobile CommunicationsGSM
General Purpose Interface BusGPIB
Gaussian Minimum Shift KeyingGMSK
Flexible Printed Circuit BoardFPCB
Electrostatic DischargeESD
Electrical Erasable Programmable Read-Only MemoryEEPROM
Digital Signal ProcessingDSP
dB relative to 1 milli wattdBm
Digital Communication SystemDCS
Digital to Analog ConverterDAC
Constant Current – Constant VoltageCC-CV
Bit Error RatioBER
BasebandBB
Automatic Power ControlAPC
1. INTRODUCTION
- 6 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
ʹΠΡΪΣΚΘΙΥι ͽͶΝΖΔΥΣΠΟΚΔΤͺΟΔͲΝΝΣΚΘΙΥΣΖΤΖΣΧΖΕ
ΟΝΪΗΠΣΥΣΒΚΟΚΟΘΒΟΕΤΖΣΧΚΔΖΡΦΣΡΠΤΖΤ
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ 7/140
Wireless Application Protocol
WAP
Voltage Control Temperature Compensated Crystal OscillatorVCTCXO
Voltage Controlled OscillatorVCO
Universal Asynchronous Receiver/TransmitterUART
Time Division Multiple AccessTDMA
Time Division DuplexTDD
Travel AdapterTA
Side Tone Masking RatingSTMR
Pseudo SRAMPSRAM
Static Random Access MemorySRAM
Sending Loudness RatingSLR
Subscriber Identity ModuleSIM
Surface Acoustic WaveSAW
Real Time ClockRTC
Root Mean SquareRMS
Receiving Loudness RatingRLR
Radio FrequencyRF
Public Switched Telephone NetworkPSTN
Phase Locked LoopPLL
Programmable Gain AmplifierPGA
Printed Circuit BoardPCB
Power Amplifier ModulePAM
1. INTRODUCTION
2. PERFORMANCE
- 7 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
2. PERFORMANCE
2.1 Product Name
LG-P350 : WCDMA900/2100+EGSM/GSM850/DCS/PCS
(HSDPA 3.6Mbps GPRS Class 12 / EDGE Class 12)
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 : 915 – 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
2.3 Main Parts : GSM Solution
Item Part Name Comment
Digital Baseband MSM7227 : Qualcomm
Analog Baseband PM7540 : Qualcomm
RF Chip RTR6285 : Qualcomm
2. PERFORMANCE
2. PERFORMANCE
- 8 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
2.4 HW Features
Item Feature Comment
Form Factor DOP type
1) Capacity
Standard : Li-Ion , 1280mAh
Battery
2) Packing Type : Soft Pack
Size Standard :
108 x 57.5 x 12.2mm
Weight 108g With Battery
Volume TBD
PCB L1B1 type, 8 Layers , 0.8t
Stand by time 2G Up to 580 hrs
3G Up to 510 hrs
@ Paging Period 9 (2G)
@ DRX 8 (3G)
Charging time 3 hrs @ Power Off / 1280mAh
Talk time 2G Up to 450mins
3G Up to 420mins
@ Power Level 10 (2G)
@ Tx = 0dBm (3G)
RX sensitivity
WCDMA(FDD1) : -106.7 dBm
WCDMA(FDD8) : -103.7 dBm
EGSM : -105 dBm
GSM850 : -105 dBm
DCS 1800 : -105 dBm
PCS 1900 : -105 dBm
WCDMA/
GSM/
GPRS
WCDMA : 24dBm/3.84MHz,+1/-3dBm
EGSM : 33dBm
GSM850 : 33 dBm
DCS 1800 : 30 dBm
PCS 1900 : 30 dBm
Class3(WCDMA)
Class4 (EGSM)
Class4 (GSM850)
Class1 (PCS)
Class1 (DCS)
TX
output
power
EDGE
GSM 900 : 27 dBm
DCS 1800 : 26 dBm
PCS 1900 : 26 dBm
E2 (GSM900)
E2 (PCS)
E2 (DCS)
GPRS compatibility GPRS Class 12
EDGE compatibility EDGE Class 12
SIM card type Plug-In SIM
3V /1.8V
2. PERFORMANCE
- 9 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
Display Main LCD
TFT Main LCD(2.8’, 320 x 240)
Built-in Camera 3M FF CMOS Camera
Status Indicator No
Keypad Function Key : 4
Side Key : 2
Function Key:
Home, Back, Menu, Search
Side Key :
Volume up/down
ANT Main : Internal Fixed Type
System connector 5 Pin
Ear Phone Jack 3.5Phi, 4 Pole, Stereo
PC synchronization Yes
Memory NAND Flash : 4Gbit
SDRAM : 2Gbit
Speech coding FR, EFR, HR,AMR
Data & Fax Built in Data & Fax support
Vibrator Built in Vibrator
Blue Tooth V2.1+ EDR
MIDI(for Buzzer Function) SW Decoded 72Poly
Music Player MP3/ WMA/AAC/HE-AAC/EAAC+
Video Player MPEG4, H.263, H.264
Camcorder MPEG4, H.263, H.264
Voice Recording Yes
Speaker Phone mode
Support Yes
Travel Adapter Yes
CDROM No
Stereo Headset Yes
Data Cable Yes
T-Flash
(External Memory) Yes
2. PERFORMANCE
- 10 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
2.5 SW Features
Item Feature Comment
RSSI 0 ~ 4 Levels
Battery Charging 0 ~ 6 Levels
Key Volume 0 ~ 7 Level
Audio Volume 1 ~ 15 Level
Time / Date Display Yes
Multi-Language Yes English/French/German/Spanish/Italia
n/Danish/Dutch/Korean
Quick Access Mode Dialing/ Contact / Menu / Message /
Camera
PC Sync No
Speed Dial No Voice mail center -> 1 key
Profile Yes not same with feature phone setting
CLIP / CLIR Yes
Phone Book
Name / Number / Email / Chat Id/
Website/Postal
addresses/Organizations/Groups/
BirthdayNotes / Ringtone
There is no limitation on the number
of items.
It depends on
available memory amount.
Last Dial Number Yes
Last Dial Numbers, Last Received
Numbers and Last Missed Numbers
can store up to a total of 500.
Last Received
Number Yes
Last Dial Numbers, Last Received
Numbers and Last Missed Numbers
can store up to a total of 500.
Last Missed Number Yes
Last Dial Numbers, Last Received
Numbers and Last Missed Numbers
can store up to a total of 500.
Search by Number
/ Name Name
Group Yes
There is no limitation on the number
of items. It depends on
available memory amount.
Fixed Dial Number Yes
2. PERFORMANCE
- 11 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
Service Dial Number No
Own Number Yes
Read only
(add/edit/delete are not
supported)
Voice Memo Yes
Call Reminder No
Network Selection Automatic
Mute Yes
Call Divert Yes
Call Barring Yes
Call Charge (AoC) Yes
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 No
Send / Receive / Save No
MMS MPEG4
Send / Receive / Save Yes
Long Message MAX 459 characters SMS 3pages
Cell Broadcast Yes
Download Over the Web
Game Yes
Calendar Yes
Memo Yes
There is no limitation on the number
of items.
It depends on available memory
amount.
World Clock No
Unit Convert No
Stop Watch No
Wall Paper Yes
2. PERFORMANCE
- 12 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
WAP Browser No
Support only web browser based on
webkit. WAP stack and wml are not
supported.
Download Melody /
Wallpaper Yes Over web browser
SIM Lock Yes Operator Dependent
SIM Toolkit Class 1, 2, 3, C
MMS Yes Google MMS Client
EONS Yes
CPHS Yes V4.2
ENS No
Camera Yes 3M FF /
Digital Zoom : x4
JAVA Yes CLDC V1.1 / MIDP V2.1
Download Over Web
Voice Dial No
IrDa No
Bluetooth Yes Ver. 2.1+EDR
(HSP,HFP,A2DP,AVRCP)
FM radio Yes
GPRS Yes Class 12
EDGE Yes Class 12
Hold / Retrieve Yes
Conference Call Yes Max. 6
DTMF Yes
Memo pad No
TTY No
AMR Yes
SyncML Yes
IM Yes
Email Yes
2. PERFORMANCE
- 13 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
2.6 HW SPEC.
1) GSM transceiver specification
Item Specification
Phase Error Rms : 5°
Peak : 20 °
Frequency Error GSM : 0.1 ppm
DCS/PCS : 0.1 ppm
EMC(Radiated Spurious Emission
Disturbance) GSM/DCS : < -28dBm
Transmitter Output power and Burst
Timing
GSM : 5dBm – 33dBm ± 3dB
DCS/PCS : 0dBm – 30dBm ± 3dB
Burst Timing <3.69us
Spectrum due to modulation out to
less than 1800kHz offset
200kHz : -36dBm
600kHz : -51dBm/-56dBm
Spectrum due to modulation out to
larger than 1800kHz offset to the
edge of the transmit band
GSM :
1800-3000kHz :< -63dBc(-46dBm)
3000kHz-6000kHz : <-65dBc(-46dBm)
6000kHz < : < -71dBc(-46dBm)
DCS :
1800-3000kHz :< -65dBc(-51dBm)
6000kHz < : < -73dBc(-51dBm)
Spectrum due to switching transient 400kHz : -19dBm/-22dBm(5/0), -23dBm
600kHz : -21dBm/-24dBm(5/0), -26dBm
Reference Sensitivity – TCH/FS Class II(RBER) : -105dBm(2.439%)
Usable receiver input level range 0.012(-15 - -40dBm)
Intermodulation rejection – Speech
channels
± 800kHz, ± 1600kHz
: -98dBm/-96dBm (2.439%)
AM Suppression
TGSM : -31dBm
- DCS : -29dBm
-98dBm/-96dBm (2.439%)
Timing Advance ± 0.5T
2. PERFORMANCE
- 14 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
2) WCDMA transmitter specification
Item Specification
Transmit Frequency Band1 : 1920 MHz ~ 1980 MHz
Band8 : 880MHz ~ 915MHz
Maximum Output Power +24 dBm / 3.84 MHz, +1 / -3 dB
Frequency Error within ±0.1 PPM
Open Loop Power Control Normal Conditions : within ±9 dB,
Extreme Conditions : within ±12 dB
Minimum Transmit Power < -50 dBm /3.84 MHz
Occupied Bandwidth < 5 MHz at 3.84 Mcps (99% of power)
Adjacent Channel Leakage
Power Ratio (ACLR)
> 33 dB @ ±5 MHz,
> 43 dB @ ±10 MHz
Spurious Emissions
|f-fc| > 12.5 MHz
< -36 dBm / 1 kHz RW @ 9 kHz ≤ f < 150 kHz
< -36 dBm / 10 kHz RW @ 150 KHz ≤ f < 30 MHz
< -36 dBm / 100 kHz RW @ 30 MHz ≤ f < 1 GHz
< -30 dBm / 1 MHz RW @ 1 GHz ≤ f < 12.75 GHz
< -60 dBm / 3.84 MHz RW @ 869 MHz ≤ f ≤ 894 MHz
< -60 dBm / 3.84 MHz RW @ 1930 MHz ≤ f ≤ 1900 MHz
< -60 dBm / 3.84 MHz RW @ 2110 MHz ≤ f ≤ 2155 MHz
< -67 dBm / 100 kHz RW @ 925 MHz ≤ f ≤ 935 MHz
< -79 dBm / 100 kHz RW @ 935 MHz < f ≤ 960 GHz
< -71 dBm / 100 kHz RW @ 1805 MHz ≤ f ≤ 1880 MHz
< -41 dBm / 300 kHz RW @ 1884.5 MHz < f < 1919.6 MHz
Transmit Intermodulation < -31 dBc @ 5 MHz & < -41 dBc @ 10 MHz
when Interference CW Signal Level = -40 dBc
Error Vector Magnitude < 17.5 %, when Pout ≥ -20 dBm
Peak Code Domain Error < -15 dB at Pout t-20 dBm
2. PERFORMANCE
- 15 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
3) WCDMA receiver specification
Item Specification
Receive Frequency Band1 : 2110 ~ 2170 MHz
Band8 : 925 ~ 960 MHz
Reference Sensitivity Level Band1 : BER < 0.001 when Îor = -106.7 dBm / 3.84 MHz
Band8 : BER < 0.001 when Îor = -103.7 dBm / 3.84 MHz
Maximum Input Level BER < 0.001 when Îor = -25 dBm / 3.84 MHz
Adjacent Channel Selectivity
(ACS)
ACS > 33 dB where BER < 0.001 when
Îor = -92.7 dBm / 3.84 MHz
& Ioac = –52 dBm / 3.84 MHz @ ±5 MHz
Blocking Characteristic BER < 0.001 when Îor = -103.7 dBm / 3.84 MHz
& Iblocking = -56 dBm / 3.84 MHz @ Fuw(offset) = ±10 MHz
or Iblocking = -44 dBm / 3.84 MHz @ Fuw(offset) = ±15 MHz
Spurious Response BER < 0.001 when Îor = -103.7 dBm / 3.84 MHz
& Iblocking = -44 dBm
Intermodulation BER < 0.001 when Îor= -103.7 dBm / 3.84 MHz
& Iouw1 = -46 dBm @ Fuw1(offset) = ±10 MHz
& Iouw2 = -46 dBm / 3.84 MHz @ Fuw2(offset) = ±20 MHz
Spurious Emissions < -57 dBm / 100 kHz BW @ 9 kHz ≤ f < 1 GHz
< -47 dBm / 1 MHz BW @ 1 GHz ≤ f ≤ 12.75 GHz
Inner Loop Power Control
In Uplink
Adjust output(TPC command)
cmd 1dB 2dB 3dB
+1 +0.5/1.5 +1/3 +1.5/4
0 -0.5/+0.5 -0.5/+0.5 -0.5/+0.5
-1 -0.5/-1.5 -1/-3 -1.5/-4
group(10equal command group)
+1 +8/+12 +16/+24
2. PERFORMANCE
- 16 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
4) HSDPA transmitter specification
Item Specification
Transmit Frequency Band1 : 1920 MHz ~ 1980 MHz
Band8 : 880MHz ~ 915 MHz
Maximum Output Power Sub-Test
1=1/15, 2=12/15 21~25dBm / 3.84 MHz
3=13/15 4=15/8 20~25dBm / 3.84 MHz
5=15/7 6=15/0 19~25dBm / 3.84 MHz
HS-DPCCH
Sub-test
in table
C.10.1.4
Power
step
Power step slot
boundary
Power step
size, P [dB]
Transmitter power step
tolerance [dB]
1 Start of Ack/Nack 6 +/- 2.3
2 Start of CQI 1 +/- 0.6
3 Middle of CQI 0 +/- 0.6
5
4 End of CQI 5 +/- 2.3
Spectrum Emission Mask
Sub-Test : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0
Frequency offset
from carrier f Minimum requirement Measurement Bandwidth
2.5 ~ 3.5 MHz -35-15×(f-2.5)dBc 30 kHz
3.5 ~ 7.5 MHz -35-1×(f-3.5)dBc 1 MHz
7.5 ~ 8.5 MHz -35-10×(f-7.5)dBc 1 MHz
8.5 ~ 12.5 MHz -49dBc 1 MHz
Adjacent Channel Leakage
Power Ratio (ACLR)
Sub-Test : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0
> 33 dB @ ±5 MHz
> 43 dB @ ±10 MHz
Error Vector Magnitude < 17.5 %, when Pout ≥ -20 dBm
2. PERFORMANCE
- 17 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
5) HSDPA receiver specification
Item Specification
Receive Frequency
Band1 : 2110 ~ 2170 MHz
Band8 : 925 ~ 960 MHz
Maximum Input Level
(BLER or R), 16QAM Only
Sub-Test : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0
BLER < 10% or R >= 700kbps
6) WLAN 802.11b transceiver specification
Item Specification
Transmit Frequency 2400 MHz ~ 2483.5 MHz ( CH1~CH13 )
Tx Power Level ≤ 20dBm under (Europe), ≤ 30dBm under (USA)
Frequency Tolerance within ±25 PPM
Chip clock Frequency
Tolerance
within ±25 PPM
Spectrum Mask ≤ -30 @ fc-22MHz< f <fc-11MHz and fc+11MHz< f <fc+22MHz
≤ -50 @ f < fc-22MHz and f > fc+22MHz
Power ramp on/off time ≤ 2us
Carrier Suppression ≤ -15dB
Modulation Accuracy
(Peak EVM)
≤ 35%
Spurious Emissions < -36 dBm @ 30MHz ~ 1GHz
< -30 dBm above @ 1GHz ~ 12.75GHz
< -47 dBm @ 1.8GHz ~ 1.9GHz
< -47 dBm @ 5.15GHz ~ 5.3GHz
Rx Min input Sensitivity ≤ -76dBm(1Mbps,2Mbps,5.5Mbps,11Mbps) @ FER ≤ 8%
Rx Max input Sensitivity ≥ -10dBm(1Mbps,2Mbps,5.5Mbps,11Mbps) @ FER ≤ 8%
Rx Adjacent Channel
Rejection
≥ 35dB @FER ≤ 8%,
interference input signal -70dBm@fc±25MHz(11Mbps)
2. PERFORMANCE
- 18 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
7) WLAN 802.11g transceiver specification
Item Specification
Transmit Frequency 2400 MHz ~ 2483.5 MHz ( CH1~CH13 )
Tx Power Level ≤ 20dBm under (Europe), ≤ 30dBm under (USA)
Frequency Tolerance within ±25 PPM
Chip clock Frequency
Tolerance
within ±25 PPM
Spectrum Mask ≤ -20 @ ±11MHz offset (9Mhz ~ 11MHz)
≤ -28 @ ±20MHz offset (11MHz ~ 20Mhz)
≤ -40 @ ±30MHz offset (20MHz ~ 30Mhz)
Transmitter constellation error
(rms EVM)
≤ -5dB
Spurious Emissions < -36 dBm @ 30MHz ~ 1GHz
< -30 dBm above @ 1GHz ~ 12.75GHz
< -47 dBm @ 1.8GHz ~ 1.9GHz
< -47 dBm @ 5.15GHz ~ 5.3GHz
Rx Min input Sensitivity PER ≤ 10%
-82dBm@6Mbps, -81dBm@9Mbps, -79dBm@12Mbps
-77dBm@18Mbps, -74dBm@24Mbps, -70dBm@36Mbps
-66dBm@48Mbps, -65dBm@54Mbps
Rx Max input Sensitivity ≥ -20dBm(6,9,12,18,24,36,48,54Mbps) @ PER ≤ 10%
Rx Adjacent Channel
Rejection
PER ≤ 10%,
ACR ≥ 16dB@6Mbps, ACR ≥ 15dB@9Mbps,
ACR ≥ 13dB@12Mbps, ACR ≥ 11dB@18Mbps,
ACR ≥ 8dB@24Mbps, ACR ≥ 4dB@36Mbps
ACR ≥ 0dB@48Mbps, ACR ≥ -1dB@54Mbps
ACR shall be measured by setting the desired signal's strength 3 dB
above the rate-dependent
sensitivity specified in min input sensitivity
8) GPS receiver specification
Item Specification
Receive Frequency 1574.42 MHz ~ 1576.42 MHz
Minimum Sensitivity 1 satellite ≥-142dBm, 7 satellites ≥ -147dBm at coarse time aiding
3. TECHNICAL BRIEF
- 19 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
3. TECHNICAL BRIEF
3.1 GENERAL DESCRIPTION
The LG-P350 supports UMTS-900, UMTS-2100, GSM-850, GSM-850, GSM-900, GSM-1800, and GSM-1900
based GSM/GPRS/EDGE/UMTS. All receivers and the UMTS transmitter use the radioOne1Zero-IF architecture
to eliminate intermediate frequencies, directly converting signals between RF and baseband. The quad-band
GSM transmitters use a baseband-to-IF upconversion followed by an offset phase-locked loop that translates
the GMSK-modulated or 8-PSK-modulated signal to RF.
[Figure 1-1] Block diagram of RF part
3. TECHNICAL BRIEF
P350 RF Block Diagram RF
3. TECHNICAL BRIEF
- 20 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ
A generic, high-level functional block diagram of LG-P350 is shown in Figure 1-1. One antenna collects base
station forward link signals and radiates handset reverse link signals. The antenna connects with receive and
transmit paths through a ASM(Antenna-Switch-Module).
The UMTS receive paths each include an LNA, an RF band-pass filter, and a downconverter that translate the
signal directly from RF-to-baseband using radioOne ZIF techniques. The RFIC’s Rx analog baseband outputs,
for the receive chains, connect to the MSM IC. The UMTS and GSM Rx baseband outputs share the same
inputs to the MSM IC.
For the transmit chains, the RTR6285 IC directly translates the Tx baseband signals (from the MSM device) to
an RF signal using an internal LO generated by integrated onchip PLL and VCO. The RTR6285 IC outputs
deliver fairly high-level RF signals that are first filtered by Tx SAWs and then amplified by their respective
UMTS PAs. In the GSM receive path, the received RF signals are applied through their band-pass filters and
down-converted directly to baseband in the RTR6285 transceiver IC. These baseband outputs are shared with
the UMTS receiver and routed to the MSM IC for further signal processing.
The GSM/EDGE transmit path employs one stage of up-conversion and, in order to improve efficiency, is
divided into phase and amplitude components to produce an open-loop Polar topology:
1. The on-chip quadrature up-converter translates the GMSK-modulated signal or 8-PSK modulated signal, to
a constant envelope phase signal at RF;
2. The amplitude-modulated (AM) component is applied to the ramping control pin of Polar power amplifier
from a DAC within the MSM. LG-P350 power supply voltages are managed and regulated by the PM7540
Power Management IC. This versatile device integrates all wireless handset power management, general
housekeeping, and user interface support functions into a single mixed signal IC.
It monitors and controls the external power source and coordinates battery recharging while maintaining the
handset supply voltages using low dropout, programmable regulators.
The device’s general housekeeping functions include an ADC and analog multiplexer circuit for monitoring
on-chip voltage sources, charging status, and current flow, as well as user-defined off-chip variables such as
temperature, RF output power, and battery ID.
Various oscillator, clock, and counter circuits support IC and higher-level handset functions. Key parameters
such as under-voltage lockout and crystal oscillator signal presence are monitored to protect against
detrimental conditions.
Other manuals for LG-P350
7
Table of contents
Other LG Cell Phone manuals
