LG_VS750 SVC_Manual_100405.pdf
(
16946 KB
)
Pobierz
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
VS750
1. Introduction
1.1. Purpose
This manual provides the information necessary to repair, calibration, description and download the
features of this model.
1.2. RegulatoryInformation
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.
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
VS750
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.
VS750 Product SPEC
VS750
Product Requirement SPEC.
Feb., 26, 2010
(RevA.0)
LG Electronics Inc.
- 1 -
Table of Contents
VS750
VS750 Product SPEC........................ 1
Calibration & RF Auto Test
Program (Tachyon)......................... 85
2. Supporting Standard................................. 3
3. Functions of Major Semi-Conductors ....... 3
4. HW Features ............................................ 4
1. Configuration of Tachyon ....................... 86
1.1 Configuration of directory............... 86
5. SW Features............................................. 6
6. VS750 Figures.......................................... 9
1.2 Description of basic folders............ 87
1.3 Description of configuration files .... 87
2. How to use Tachyon............................... 88
GSM/ UMTS TECHNICAL BRIEF.... 10
2.1 Model selection .............................. 88
1.1. GENERAL DESCRIPTION.................. 10
2.2 Start cal & auto .............................. 90
1.2. GSM MODE......................................... 11
1.3. UMTS MODE....................................... 13
1.4. LO GENERATION and DISTRIBUTION
Main PCB Component List............. 92
FPCB Main Component List ........ 113
CIRCUIT .............................................. 16
1.5. OFF-CHIP RF COMPONENTS ........... 17
3 Key Component List.................. 114
TROUBLE SHOOTING .................... 21
1.1 RF Component ..................................... 21
1.2 SIGNAL PATH...................................... 23
1.3 Checking TCXO Block.......................... 26
1.4 Checking FEM Block ............................ 28
1.5 Checking WCDMA Block...................... 31
1.6 Checking GSM Block............................ 43
System HW Block Diagram............ 52
System RF Block Diagram ............. 53
System HW Block Diagram............ 54
VS750 REV 1.0 Schematic.............. 57
BGA Pin Map ................................... 77
- 2 -
VS750 Product SPEC
VS750 : WCDMA1900/850/2100 + EGSM/GSM850/DCS/PCS +
US Cellular/US PCS + GPS
(HSDPA / GPRS / EDGE) (EVDO Rev_0 / EVDO Rev_A)
2. Supporting Standard
I
F
r
C
t
Supporting
Standard
WCDMA(FDD1,2,5)
EGSM/GSM850/DCS1800/PCS1900
US Cellular / US PCS
GPS
Frequency Range
WCDMA(FDD1) TX : 1920 – 1980 MHz
WCDMA(FDD1) RX : 2110 – 2170 MHz
WCDMA(FDD2) TX : 1850 – 1910 MHz
WCDMA(FDD2) RX : 1930 – 1990 MHz
WCDMA(FDD5) TX : 824 – 849 MHz
WCDMA(FDD5) RX : 849 – 894 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
US Cellular TX : 824.82 ~ 848.19 MHz
US Cellular RX : 869.82~893.19 MHz
US PCS TX : 1850~1910 MHz
US PCS RX : 1930~1990 MHz
GPS : 1575.42 MHz
3. Functions of Major Semi-Conductors
C
QSD8650
i
c
o
n
F
c
n
Terminal operation control and digital signal processing
Memory
(H8BES0UQ0MCR-46M)
NAND Flash Memory (4G) + SDRAM (2G)
Storing of terminal operation program
RTR6500/ RTR6285
Converts Rx and Tx RF signal to baseband signal
- 3 -
Plik z chomika:
wibi
Inne pliki z tego folderu:
SuperOneClickv1.5.4_ShortFuse__1_.zip
(1384 KB)
updDSCv2.3.zip
(4140 KB)
updDSCv2.0.1.zip
(319 KB)
updDSCv1.7.zip
(26168 KB)
updDSCv1.5.zip
(26014 KB)
Inne foldery tego chomika:
Android
ARDUINO
Dysk SSD-Naprawa,Remont,Firmware
Ebooki
Elektronika-schematy,Netbooki
Zgłoś jeśli
naruszono regulamin