Features of Mobile Subscriber o Radio Radi Telephone tSet Se (LG P-2300/2310 2300/231 0 W Type) Type ) 1. Wave Type : G7W 2. Frequency Scope • Send Frequency : 1850~1910MHz • Receive Frequency : 1930~1990MHz 3. Rated Output • 360mW 4. Output Conversion Method : This is possible by correcting the key board channel. 5. Voltage and Current Value of Termination Part Amplifier(Catalogue included) Product Type Name Voltage Current Power PWR AMP RI-21108U 5.0V 450mA 250mW 6.
LGP-2300/2310W CDMA Mobile Subscriber Unit LGP-2300/2310W SERVICE MANUAL LG Information & Communications, Ltd.
LGP-2300/2310W LG Information & Communications, Ltd.
LGP-2300/2310W Table of Contents General Introduction ...................................................................................................................................................................... 3 CHAPTER 1. System Introduction 1. System Introduction ..................................................................................................................................... 4 2. Features and Advantages of CDMA Mobile Phone .................................................
LGP-2300/2310W General Introduction The LGP-2300/2310W is a 1.9GHz CDMA(Code Division Multiple Access) PCS phone. CDMA technology with this phone adopts DSSS(Direct Sequence Spread Spectrum) ,which is also used in the military. This feature of DSSS enables the phone to keep communication from being crossed and to use one frequency channel by multiple users in the same specific area, resulting that it increases the capacity 10 times more compared with that in the analog mode currently used.
LGP-2300/2310W CHAPTER 1. System Introduction 1. System Introduction 1.1 CDMA Abstract Currently,2 methods of PCS services are in use worldwide; One is TDMA and the other is CDMA. DCS1800,which is based on the GSM protocol , TDMA technology, and 1.8GHz frequency range is in service in many areas including Europe. Japanese PHS(Personal Handy-phone System) is based on the TDMA/TDD technoogy and uses 1.9GHz frequency range.
LGP-2300/2310W avoided. Moreover, space diversity (also called path diversity) can be realized with the following three types of methods. First, it can be obtained by the duplication of cell site receive antenna. Second, it can be obtained through the use of multi-signal processing device that receives a transmit signal having each different transmission delay time and then, combines them.
LGP-2300/2310W conditions and message/data; both of them utilize four-stage frames of 14400,7200,3600,1800 bits per second. In addition, this type of variable voice encoder utilizes adaptive threshold values when selecting required data rate. It is adjusted in accordance with the size of background noise and the data rate is increased to high rate only when the voice of caller is inputted.
LGP-2300/2310W 2.7 Soft Capacity The subscriber capacity of the CDMA system is flexible depending on the relation between the number of users and service classes. For example, the system operator can increase the number of channels available for use during the busy hour despite the drop in call quality. This type of function requires 40% of normal call channels in the standby mode during the handoff support, in an effort to avoid call disconnection resulting from the lack of channels.
LGP-2300/2310W 3. Structure and Functions of CDMA Mobile Phone The mobile station of the CDMA system is made up of a radio frequency part and a logic/control (digital) part. The mobile station antenna is connected with the transmitter/receiver via a duplexer filter so that it can carry out the transmit/receive function at the same time. The transmit frequency is the 60MHz band of 1850~1910MHz , whereas the receive frequency is the 60MHz band of 1930~1990MHz.
LGP-2300/2310W 4. Specification 4.1 General Specification 4.1.1 Transmit/Receive Frequency Interval : 80 MHz 4.1.2 Number of Channels (Channel Bandwidth) : 48 4.1.3 Operating Voltage : DC 3.8V 4.1.4 Battery Power Consumption : DC 3.8V SLEEP IDLE 3 mA 100 mA CDMA MAX POWER 450 mA (24 dBm) 4.1.5 Operating Temperature : -20°° ~ +60°° 4.1.6 Frequency Stability : ±0.1PPM 4.1.7 Antenna : Retractable Type (Herical+Whip), 50 W 4.1.8 Size and Weight 1) Size : 126523.
LGP-2300/2310W 4.2.4 Sensitivity : -104dBm ( or more) 4.2.5 Selectivity : 3dB C/N Degration (With Fch±1.25 kHz : -30dBm) 4.2.6 Spurious Wave Suppression : Maximum of -80dB 4.2.7 CDMA Input Signal Range • Dynamic area of more than -104~ -25 dB : 79dB at the 1.23MHz band. 4.3 Transmit Specification 4.3.1 Frequency Range : 1850 MHz ~ 1910 MHz 4.3.2 Local Oscillating Frequency Range : 1719.62MHz ∼ 1779.62MHz 4.3.3 Intermediate Frequency : 130.38 MHz 4.3.4 Output Power : 360mW 4.3.
LGP-2300/2310W 125 1856.25 525 1876.25 925 1896.25 150 1857.50 550 1877.50 950 1897.50 175 1858.75 575 1878.75 975 1898.75 200 1860.00 600 1880.00 1000 1900.00 225 1861.25 625 1881.25 1025 1901.25 250 1862.50 650 1882.50 1050 1902.50 275 1863.75 675 1883.75 1075 1903.75 300 1865.00 700 1885.00 1100 1905.00 325 1866.25 725 1886.25 1125 1906.25 350 1867.50 750 1887.50 1150 1907.50 375 1868.75 775 1888.75 1175 1908.75 4.
LGP-2300/2310W 4.8 Hands-Free Kit : See Appendix 5. Installation 5.1 Installing a Battery Pack 1) The Battery pack is keyed so it can only fit one way. Align the groove in the battery pack with the rail on the back of the phone until the battery pack rests flush with the back of the phone. 2) Slide the battery pack forward until you hear a “click”, which locks the battery in place. 5.2 For Desktop Charger Use 1) Plug the charger into a wall outlet. The charger can be operated from a 110V source.
LGP-2300/2310W Install the microphone either by cliiping I onto the sunvisor (driver’s side) or by attaching it to door post (driver’s side), using a velcno adhesive tape (not included). 5.3.5 Cable Connections 5.3.5.1 Power and Ignition Cables Connect the red wire to the car battery positive terminal and the black wire to the car ground. Connect the green wire to the car ignition sensor terminal. ( In order to operate HFK please make sure to connect green wire to ignition sensor terminal.
LGP-2300/2310W CHAPTER 2. NAM Input Method (Inputting of telephone numbers included) 1. Telephone Number Inputting Method Telephone numbers can be inputted as follows in LGP2300W. − Press MENU+4+0 and then, press the password made up of six digits(Default:000000). 1) You can see ESN number : Press [ ok ] 2) You can see “ NAM1 PHONE NUMBER” : types proper phone number and press [ ok ] 3) Press [ok] ; press [ok] 2. NAM Program Method The NAM inputting method of LGP2300W is as follows. - Press MENU+4+0.
LGP-2300/2310W CHAPTER 3. Circuit Description 1. RF Transmit/Receive Part 1.1 Overview The RF transmit/receive part employs the Super-Heterodyne system. The transmit/receive frequency is respectively 1850~1910 MHz and 1930~1990 MHz and the block diagram is shown in Appendix . RF signals received through the antenna pass through the duplexer and then are fed into a low noise amplifier (LNA).
LGP-2300/2310W [Figure 1-1] Block Diagram of RF Transmit/Receive Part 1.2 Description of Receive Part Circuit 1.2.1 Duplexer (DP1) The duplexer(DP1) consists of a receive part bandpass filter (BPF) and a transmit part bandpass filter(BPF). Its function is separating transmit/receive signals in the full duplex system using the transmit/receive common antenna.
LGP-2300/2310W amplifier(U203). At the down-converter(U204),the amplified signals from the RF amplifier are mixed with the UHF local oscillation signals from the frequency synthesizer,generating the added and the subtracted frequency components.As for the down-converter,we used a double balanced mixer in order to minimize the interference between the local oscillation signals and the IF signals. The major output from the down-converter are the signals at 210.38MHz.
LGP-2300/2310W 1.3.1 Description on the analog conversion circuitry The IFT3000(U401) receives digital I/Q baseband data from the MSM chip(U503). The 8 bit transmit data are multiplexed and put into the IFT3000’s DAC(Digital to Analog Converter). The input data are fed into I DAC on the rising edge of the transmit clock,and fed into the Q DAC on the falling edge. The I and Q data are fed in from the MSM with 1/2 clock cycle’s difference.
LGP-2300/2310W rise,and output error resulting from ripple variations. The signals from the PAM are then sent to the Tx input terminal of the duplexer,receptacle,and finally transmitted through the antenna. The duplexer is essentially a dielectric filter that passes Tx and Rx signals along the respective paths,and suppresses spurious signals. Its IL(insertion loss) within the Tx band is 3.6dB(Max). 1.4 Description of Frequency Synthesizer Circuit 1.4.
LGP-2300/2310W 2. Digital/Voice Processing Part 2.1 Overview The digital/voice processing part processes the user's commands and processes all the digital and voice signal processing in order to operate in the phone. The digital/voice processing part is made up of a keypad/LCD, receptacle part, voice processing part, mobile station modem part, memory part, and power supply part. 2.2 Configuration 2.2.1 Keypad/LCD and Receptacle Part This is used to transmit keypad signals to the MSM3000.
LGP-2300/2310W +5V.U603,U604,U606,U607,U608 produce +3.0V for the logic part,the RX circuitry,IFT&IFR3000,the Codec,and the UI part, respectively.The regulator U605 provides +3.6 U603, for the Tx circuitry. 2.3 Circuit Description [Figure 2-1] Block Diagram of Digital/Voice Processing Part 2.3.1 Keypad/LCD and Receptacle Part Once the keypad is pressed, the key signals are sent out to the MSM3000 for processing. In addition, when the key is pressed, the keypad lights up through the use of 8 LEDs.
LGP-2300/2310W 2.3.3 MSM Part The MSM3000(U503) is the core element of CDMA system terminal. Subsystems within the MSM3000 include a CDMA processor, a QCELP(Qualcomm Code Excited Linear Predication) vocoder,an EVRC(Enhanced Variable Rate Codec) vocoder, an ARM microprocessor ,and assorted peripheral interfaces that are used to support other functions. The MSM3000,when operated in the CDMA mode, utilizes CHIPX8 (9.
LGP-2300/2310W SLEEP/.The 3.6V generated by the regulator U605 is mainly for the TX part,and is controlled by IDLE/.The 3.0 V generated by the regulator U606 provides voltage for the IFR3000 and the IFT3000,and is controlled by P_EN.The regulator U603 generates +3.0V for the EEPROM,the Flash Memory, and the MSM3000,and is controlled by P_EN.Regulator U607 generates +3.0V for the codec and is controlled by AUDIO_EN.U608 generates +3.0V for the UI LED,and is controlled by P_EN. 2.3.
LGP-2300/2310W CHAPTER 4. Trouble Shooting 1. When power isn't "Turn On". 2. When LCD isn't displayed. LG Information & Communications, Ltd.
LGP-2300/2310W 3. When Tx Audio (MIC) isn't transmitted. 4. When Rx Audio (Speaker) isn't heard. LG Information & Communications, Ltd.
LGP-2300/2310W 5. When Keytone isn't heard. 6. When Buzzer isn't rung. LG Information & Communications, Ltd.
LGP-2300/2310W 7. When Tx carrier isn't transmitted. LG Information & Communications, Ltd.
LGP-2300/2310W LG Information & Communications, Ltd.
LGP-2300/2310W LG Information & Communications, Ltd.
LGP-2300/2310W 8. When Rx sensitivity isn't normal. LG Information & Communications, Ltd.
LGP-2300/2310W CHAPTER 5. Test Procedure LG Information & Communications, Ltd.
LGP-2300/2310W APPENDIX 1. Assembly and Disassembly Diagram 2. Block & Circuit Diagram 3. Part List 4. Component Layout 5. Accessories - Desktop Charger - Travel Charger - Cigar Lighter Charger - Hands Free Kit - Data Kit LG Information & Communications, Ltd.
