LG CX9100 Service Manual

Features of CX9100

1. Wave Type

CELLULAR : G7W

●

PCS: G7W

●

2. Frequency Scope Transmit Frequency (MHz) Receive Frequency (MHz)

CELLULAR PCS CELLULAR PCS GPS

824.04 ~ 848.97 1850~1909.95 869.04~893.97 1930~1989.95 1575.42

3. Rated Output Power : CELLULAR = 0.26W

PCS = 0.24W

4. Output Conversion Method : This is possible by correcting the key board channel.

5. Voltage and Current Value of Termination Part Amplifier (Catalogue included)

PowerCurrentVoltagePart NameMODE

6. Functions of Major Semi-Conductors

Terminal operation control and digital signal processing MSM6550A

Memory MCP

(HYC0SGH0MF3P)

7. Frequency Stability

CELLULAR : ±0.5PPM

●

● PCS : ±0.1PPM

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Flash Memory (1Gbit) + SDRAM (512Mbit)

Storing of terminal operation program Converts Rx RF signal to baseband signalRFR6500 Converts baseband signal to Tx RF signalRFT6150

0.26W500mA4.2VAWT6321RCELLULAR

0.24W500mA4.2VAWT6321RPCS

FunctionClassification

CX9100

CDMA Mobile Subscriber Unit CX9100

SERVICE MANUAL

DUAL BAND CDMA

[PCS/Cellular/GPS]

CDMA MOBILE PHONE

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Table of Contents

General Introduction……………………………………………………………….……………...3

CHAPTER 1. System Introduction……………..………………………………………...4

1. CDMA Abstract…….……………………………………………………………….….…….…..4

2. Features and Advantages of CDMA Mobile Phone………….........................................5

3. Structure and Functions of Dual-band CDMA Mobile Phone……………….……….….8

4. Specification……………………………………………………………………………………..9

5. Installation………………………………………………………………………………………14

CHPATER 2. NAM Input Method………………………………………..……………….16

1. NAM Program Method and Telephone Number Inputting Method……………………16

CHAPTER 3. Circuit Description………………………………..……………………….26

1. RF Transmit/Receive Part……………………………………………………………….……26

2. Digital/Voice Processing Part……………………………………………………………….32

CHAPTER 4. Trouble Shooting………………………………………...………………...36

1. RX Part Trouble Shooting………………………………………………………..................36

1.1 DCN RX………………………………………………………………………………………36

1.2 PCS RX……………………………………………………………………………….………48

2. TX Part Trouble Shooting…………………………………………………………….………60

2.1 DCN TX…………………………………………………………………………….…………60

2.2 PCS TX…………………………………………………………………………….…………74

3. Logic Part Trouble Shooting………………………………………………………….……..88

3.1 Power………………………………………………………………………………………...88

3.2 LCD…………………………………………………………………………………….……..92

3.3 Camera……………………………………………………………………………….………94

3.4 Audio………………………………………………………………………………….……...98

3.5 Backlight…………………………………………………………………………………...110

3.6 Vibrator……………………………………………………………………………………..114

4. Bluetooth Part Trouble Shooting………………………………………………………….116

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CHAPTER 5. Safety………………………………………..………………………..………118

CHAPTER 6. Glossary……………………………………….………………………….…121

APPENDIX………………………………………………………………………………...……133

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General Introduction

The VX9100 phone has been designed to operate on the latest digital mobile communication technology, Code Division Multiple Access (CDMA). This CDMA digital technology has greatly enhanced voice clarity and can provide a variety of advanced features. Currently, CDMA mobile communication technology has been commercially used in Cellular and Personal Communication Service (PCS). The difference between them is the operating frequency spectrum. Cellular uses 800MHz and PCS uses 1.9GHz. The VX9100 support GPS Mode, we usually call it tri-band phone. Also, VX9100 works on Advanced Mobile Phone Service (S-GPS). We call it dualmode phone. If one of the Cellular, PCS base stations is located nearby, Call fail rate of triple-mode phone is less than dual-mode phone or single-mode phone.

The CDMA technology adopts DSSS (Direct Sequence Spread Spectrum). 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 1 0 times more co mpar ed with that in the analog mode currently used. Soft/Softer Handoff, Hard Handoff, and Dynamic RF power Control technologies are combined into this phone to reduce the call being interrupted in a middle of talking over the phone. Cellular and PCS CDMA network consists of MSO (Mobile Switching Office), BSC (Base Station Controller), BTS (Base station Transmission System), and MS (Mobile Station). The following table lists some major CDMA Standards.

CDMA Standard Designator Description

Basic air interface

Network

Service

1x EV-DO related

interface

TIA/EIA-95A

TSB-74

ANSI J-STD-008

TIA/EIA-IS2000

TIA/EIA/IS-634 TIA/EIA/IS-651

TIA/EIA/IS-41-C

TIA/EIA/IS-124

TIA/EIA/IS-96-B

TIA/EIA/IS-637 TIA/EIA/IS-657

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IS-801

TIA/EIA/IS-707-A

TIA/EIA/IS-856 TIA/EIA/IS-878 TIA/EIA/IS-866 TIA/EIA/IS-890

CDMA Dual-Mode Air Interface

14.4kbps radio link protocol and inter-band operation IS-95 adapted for PCS frequency band CDMA20 1xRTT Air Interface

MAS-BS PCSC-RS Intersystem operations Non-signaling data comm.

Speech CODEC Short Message Service Packet Data Position Determination Service (gpsOne) High Speed Packet Data

CDMA2000 High Rate Packet Data Air Interface 1x EV-DO Inter-Operability Specification for HRPD

s Network Interface

Acces Recommended Minimum Performance Standards for High Rate Packet Data Access Terminal Test Application Specification (TAS) for High Rate Packet Data Air Interface

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Chapter1. System Introduction

1. CDMA Abstract

The CDMA mobile communication system has a channel hand-off function that is used for collecting the information on the locations and movements of mobile telephones from the cell site by auto matically controlling several cell site through the setup of data transmission routes, and then enabling one switching system to carry out the automatic remote adjustment. This is to maintain continuously the call state through the automatic location co nfirmation and automatic radio channel conversion when the busy subscriber moves from the service area of one cell site to that of another by using automatic location confirmation and automatic radio channel conversion functions. The call state can be maintained continuously by the information exchange between switching systems when the busy subscriber moves from one Cellular system area to the other Cellular system area.

In the Cellular system, the cell site is a small-sized low output type and utilizes a frequency allocation system that considers mutual interference, in an effort to enable the re-use of corresponding frequency from a cell site separated more than a certain distance.

Unlike the time division multiple access (TDMA) or frequency division multiple access (FDMA) used in the band limited environment, the Code Division Multiple Access (CDMA) system which is one of digital Cellular systems is a multi-access technology under the interference limited environment. It can process more number of subscribers compared to other systems (TDMA system has the processing capacity three times greater than the existing FDMA system whereas CDMA system, about 12~15 times of that of the existing system).

CDMA system can be explained as follows; TDMA or CDMA can be used to enable each person to talk alternately or provide a separate room for each person when two persons desire to talk with each other at the same time, whereas FDMA can be used to enable one person to talk in soprano, whereas the other in bass (one of the two talkers can carry out synchronization for hearing in case there is a bandpass filter function in the area of the hearer). Another available method is to make two persons to sing in different languages at the same time, space, and frequency when wishing to let the audience hear the singing without being confused. This is the characteristic of CDMA.

On the other hand, when employing the CDMA technology, each signal has a different pseudo-random binary sequence used to spread the spectrum of carrier. A great number of CDMA signals share the same frequency spectrum. In the perspective of frequency area or time area, several CDMA signals are overlapped. Among these types of signals, only desired signal energy is selected and received through the use of pre-determined binary sequence; desired signals can be separated, and then received with the correlator used for recovering the spectrum into its original state. At this time, the spectrums of other signals that have different codes are not recovered into its original state, and appears as the self-interference of the system.

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2. Features and Advantages of CDMA Mobile Phone

2.1 Various Types of Diversities

When employing the narrow band modulation (30kHz band) that is the same as the analog FM modulation system used in the existing Cellular system, the multi-paths of radio waves create a serious fading. However, in the CDMA broadband modulation (1.25MHz band), three types of diversities (time, frequency, and space) are used to reduce serious fading problems generated from radio channels in order to obtain high-quality calls. Time diversity can be obtained through the use of code interleaving and error correction code whereas frequency diversity can be obtained by spreading signal energy to wider frequency band. The fading related to normal frequency can affect the normal 200~300KHz among signal bands and accordingly, serious effect can be 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. Third, it can be obtained through the multiple cell site connection (Soft Handoff) that connects the mobile station with more than two cell sites at the same time.

2.2 Power Control

The CDMA system utilizes the forward (from a base station to mobile stations) and backward (from the mobile station to the base station) power control in order to increase the call processing capacity and obtain high-quality calls. In case the originating signals of mobile stations are received by the cell site in the minimum call quality level (signal to interference) through the use of transmit power con trol on all the mobile stations, the syste m capacity can be maximized.If th e signal power of mobile station is received too strong, the performance of that mobile station is improved. However, because of this, the interference on other mobile stations using the same channel is increased and accordingly, the call quality of other subscribers is reduced unless the maximum accommodation capacity is reduced. In the CDMA system, forward power control, backward open loop power control, and closed loop power control methods are used. The forward power control is carried out in the cell site to reduce the transmit power on mobile stations less affected by the multi-path fading and shadow phenomenon and the interference of other cell sites when the mobile station is not engaged in the call or is relatively nearer to the corresponding cell site. This is also used to provide additional power to mobile stations having high call error rates, located in bad reception areas or far away from the cell site. The backward open loop power control is carried out in a corresponding mobile station; the mobile station measures power received from the cell site and then, reversely increases/decreases transmit power in order to compensate channel changes caused by the forward link path loss and terrain characteristics in relation to the mobile station in the cell site. By doing so, all the mobile transmit signals received by the base station have same strength.

Moreover, the backward closed loop power control used by the mobile station is performed to control power using

the commands issued out by the cell site. The cell site receives the signal of each corresponding mobile station and compares this with the pre-set threshold value and then, issues out power increase/decrease commands to the corresponding mobile station every 1.25msec (800 times per second). By doing so, the gain tolerance and the different radio propagation loss on the forward/backward link are complemented.

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2.3 Voice Encoder and Variable Data Speed

The bi-directional voice service having variable data speed provides voice communication which employs voice

encoder algorithm having power variable data rate between the base station and the mobile station. On the other hand, the transmit voice encoder performs voice sampling and then, creates encoded voice packets to be sent out to the receive voice encoder, whereas the receive voice encoder demodulates the received voice packets into voice samples.

One of the two voice encoders described in the above is selected for use depending on inputted automatic conditions

and message/data; both of them utilize four-stage frames of 9600, 4800, 2400 , and 1200 bits per second for Cellular and 14400,7200,3600,1800 bits per second for PCS, so PCS provide relatively better voice quality (almost twice better than the existing cellular system). In addition, this type of variable voice encoder u tilizes adaptive threshold values on 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.

Therefore, background noise is suppressed and h igh-qu ality voice transmission is possible under the environment

experiencing serious noise. In addition, in case the caller does not talk, data transmission rate is reduced so that the transmission is carried out in low energy. This will reduce the interference on other CDMA signals and as a result, improve system performance (capacity increased by about two times).

2.4 Protecting Call Confidentiality

Voice privacy is provided in the CDMA system by means of the private long code mask used for PN spreading. Voice privacy can applied on the traffic channels only. All calls are initiated using the public long code mask for PN spreading. The mobile station user may request voice privacy during call setup using the origination message or page response message, and during traffic channel operation using the long code transition request order. The Transition to private long code mask will not be performed if authentication is not performed. To initiate a transition to the private or public long code mask, either the base station or the mobile station send s a long code transition request order on the traffic channel.

2.5 Soft Handoff

A handoff in which the mobile station commences communications with a new base station without interrupting communications with the old base station. Soft handoff can only be used between CDMA channels having identical frequency assignments.

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2.6 Frequency Re-Use and Sector Segmentation

Unlike the existing analog Cellular system, the CDMA system can reuse the same frequency at the adjacent cell.

there is no need to prepare a separate frequency plan. Total interference generated on mobile station signals received from the cell site is the sum of interference generated from other mobile stations in the same cell site and interference generated from the mobile station of adjacent cell site. That is, ea ch mobile station signal generates interference in relation to the signals of all the other mobile stations.

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Total interference from all the adjacen t cell sites is the ratio of interference from all the cell sites versus total interference from other mobile stations in the same cell site (about 65%). In the case of directional cell site, one cell normally uses a 120°sector antenna in order to divide the sector into three. In this case, each antenna is used only for 1/3 of mobile stations in the cell site and accordingly, interference is reduced by 1/3 on the average and the capacity that can be supported by the entire system is increased by three times.

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% o f normal call channels in the standby mode during the handoff, in an effort to avoid call disconnection resulting from the lack of channels. In addition, in the CDMA system, services and service charges are classified further into different classes so that more transmit power can be allocated to high class service users for easier call set-up; they can also be given higher priority of using hand-off function than the general users.

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3. Structure and Functions of tri-band CDMA Mobile Phone

The hardware structure of CDMA mobile phone is made up of radio frequency (RF) part and logic part. The RF part is composed of Receiver part (Rx), Transmitter part (Tx) and Local part (LO). For the purpose of operating on triband, It is necessary dual Tx path, tri Rx path, dual PLL and switching system for band selection. The mobile phone antenna is connected with the frequency separator which divide antenna input/output signals between Cellular frequency band (824~894 MHz) and PCS frequency band (1850~1990MHz). Each separated path is linked with the Cellular duplexer and PCS duplexer. Duplexer carries out separating Rx band and Tx band. The Rx signals from the antenna are converted into intermediate frequency(IF) band by the frequency synthesizer and frequency down converter. And then, pass SAW filter which is a band pass filter for removing out image frequency. The IF output signals that have been filtered is converted into digital signals via Analog-to-Digital Converter (ADC). In front of the ADC, switching system is required to choose which band path should be open. The digital signals send to 5 correlators in each CDMA de-modulator. Of these, one is called a searcher whereas the remaining 4 are called data receivers (fingers). Digitalized IF signals include a great number of call signals that have been sent out by the adjacent cells. These signals are detected with pseudo-noise sequence (PN Sequence). Signal to interference ratio (C/I) on signals that match the desired PN sequence are increased through this type of correlation detection process, but other signals obtain processing gain by not increasing the ratio. The carrier wave of pilot channel from the cell site most adjacently located is demodulated in order to obtain the sequence of encoded data symbols. During the operation with one cell site, the searcher searches ou t multi-paths in ac cordance with terrain and building reflections. On three data receivers, the most powerful 3 paths are allocated for the parallel tracing and receiving. Fading resistance can be improved a great deal by obtaining the diversity combined output for de-modulation. Moreover, the searcher can be used to determine the most powerful path from the cell sites even during the soft handoff between the two cell sites. Moreover, 3 data receivers are alloc ated in order to carry out the de-modulation of these paths. Output data that has been demodulated changes the data string in the combined data row as in the case of original signals(deinterleaving), and then, are demodulated by the forward error correction decoder which uses the Viterbi algorithm.

Mobile station user information send out from the mobile station to the cell site pass through the digital voice encoder via a mike. Then, they are encoded and forward errors are corrected through the use of convolution encoder. Then, the order of code rows is changed in accordance with a certain regulation in order to remove any errors in the interleaver. Symbols made through the above process are spread after being loaded onto PN carrier waves. At this time, PN sequence is selected by each address designated in each call. Signals that have been code spread as above are digital modulated (QPSK) and then, power controlled at the automatic gain control amplifier (AGC Amp). Then, they are converted into RF band by the frequency synthesizer synchronizing these signals to proper output frequencies. Transmit signals obtained pass through the duplexer filter and then, are sent out to the cell site via the antenna.

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4. Specification

4.1 General Specification

4.1.1 Transmit/Receive Frequency Interval :

1)CELLULAR : 45 MHz

2)PCS : 80 MHz

4.1.2 Number of Channels (Channel Bandwidth)

1)CELLULAR : 20 Channels

2) PCS : 48 Channels

4.1.3 Operating Voltage : DC 3.3~4.2V

4.1.4 Battery Power Consumption : DC 3.7V

SLEEP IDLE MAX POWER

CELLULAR 1 mA 110~180mA 700 mA (24.5 dBm) PCS 1 mA 120~180 mA 700 mA (24.5 dBm)

4.1.5 Operating Temperature : -0°C ~ +60°C

4.1.6 Frequency Stability

1)CDMA : ±0.5PPM

2)PCS : ±0.1PPM

4.1.7 Antenna : FIXED Type (PIFA), 50 Ohm

4.1.8 Size and Weight

1)Size : 101.6(H) * 54.0(W) * 16.5(D) mm

2)Weight : 125g (Approximately with st andard bat t ery)

4.1.9 Channel Spacing

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1)CELLULAR : 1.25MHz

2)PCS: 1.25 MHz

4.1.10 Battery Type, Capacity and Operating Time.

Unit = Hours : Minutes

Standby Time

CELLULAR About 480 Hours (SCI=2) PCS About 480 Hours (SCI=2) CELLULAR 150 Minutes (-92dBm input)

Talk time

PCS 150 Minutes (-92dBm input)

Standard (800mAh)

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4.2 Receive Specification

4.2.1 Frequency Range

CELLULAR : 869.820 MHz ~ 893.190 MHz PCS : 1930 MHz ~ 1990 MHz GPS : 1575.42 MHz

4.2.2 Local Oscillating Frequency Range :

CELLULAR : 1738.08MHz ~ 1787.94MHz PCS : 1715.56MHz ∼ 1768.89MHz GPS : 3150.84MHz

4.2.3 Sensitivity

CELLULAR : -104dBm (C/N 12dB or more) PCS : -104dBm (C/N 12dB or more) GPS : -148.5dBm (without SA mode)

4.2.4 Selectivity

CELLULAR : 3dB C/N Degration (With Fch±1.25 kHz : -30dBm) PCS : 3dB C/N Degration (With Fch±1.25 kHz : -30dBm)

4.2.5 Spurious Wave Suppression : Maximum of -80dB

4.2.6 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

CELLULAR : 824.820MHz ~ 848.190MHz PCS : 1850 MHz ~ 1910 MHz

4.3.2 Output Power

CELLULAR : 0.26W PCS: 0.24W

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4.3.3 Interference Rejection

Single Tone : -30dBm at 900 kHz (CELLULAR), -30dBm at 1.25MHz(PCS) Two Tone : -43dBm at 900 kHz & 1700kHz(CELLULAR), -43dBm at 1.25 MHz & 2.05 MHz (PCS)

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4.3.11 CDMA TX Frequency Deviation :

1) CELLULAR: +300Hz or less

2) PCS: ± 150Hz

4.3.12 CDMA TX Conducted Spurious Emissions

1) CELLULAR: 900kHz : - 42 dBc/30kHz below

1.98MHz : - 54 dBc/30kHz below

2) PCS: 1.25MHz: - 42 dBc/30kHz below

1.98MHz : - 50 dBc/30kHz below

4.3.13 CDMA Minimum TX Power Control

1) CELLULAR: - 50dBm below

2) PCS: -50dBm below

4.4 MS (Mobile Station) Transmitter Frequency

4.4.1 CELLULAR mode

Ch # Center Freq. (MHz) Ch # Center Freq. (MHz)

1011

29

70 111 152 193 234 275 316 363

4.4.2 PCS mode

Ch #

25 1851.25 425 1871.25 825 1891.25 50 1852.50 450 1872.50 850 1892.50 75 1853.75 475 1873.75 875 1893.75

Center Freq

824.640

825.870 0

827.10

30

828.3

829.560

830.790

832.020

833.250

834.480

835.890

(MHz)

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Ch #

404 445 486 527 568 609 650 697 738 779

Center Freq

(MHz)

Ch #

837.120

838.350

839.580

840.810

842.040

843.270 0

844.50

845.910

847.140

848.370

Center Freq

(MHz)

100 1855.00 500 1875.00 900 1895.00 125 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

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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

4.5 MS (Mobile Station) Receiver Frequency

4.5.1 CELLULAR mode

Ch. # Center Freq. (MHz) Ch. # Center Freq. (MHz)

1011

29

70 111 152 193 234 275 316 363

4.5.2 PCS mode

Ch #

25 1931.25 425 1951.25 825 1971.25 50 1932.50 450 1952.50 850 1972.50

75 1933.75 475 1953.75 875 1973.75 100 1935.00 500 1955.00 900 1975.00 125 1936.25 525 1956.25 925 1976.25

Center Freq

(MHz)

869.640

870.870

872.100

873.330

874.560

875.790

877.020

878.250

879.480

880.890

Ch #

404 445 486 527 568 609 650 697 738 779

Center Freq

(MHz)

Ch #

882.120

883.350

884.580

885.810

887.040

888.270

889.500

890.910

892.140

893.370

Center Freq

(MHz)

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150 1937.50 550 1957.50 950 1977.50 175 1938.75 575 1958.75 975 1978.75 200 1940.00 600 1960.00 1000 1980.00 225 1941.25 625 1961.25 1025 1981.25

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250 1942.50 650 1962.50 1050 1982.50 275 1943.75 675 1963.75 1075 1983.75 300 1945.00 700 1965.00 1100 1985.00 325 1946.25 725 1966.25 1125 1986.25 350 1947.50 750 1967.50 1150 1987.50 375 1948.75 775 1968.75 1175 1988.75

4.5.3 GPS mode : 1575.42 MHz

4.5.4 Bluetooth mode : 2400 MHz ~ 2483.5 MHz

4.6 AC Adaptor : See Appendix

4.7 Cigar Lighter Charger : See Appendix

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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 pa ck 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 Adapter Use

1) Plug the adapter into a wall outlet. The adapter can be operated from a 110V source. When AC power is connected to the adapter.

2) Insert the adapter IO plug into the phone with the installed battery pack. Red light indicates battery is being charged.. Green light indicates battery is fully charged.

5.3 For Mobile Mount

5.3.1 Installation Position

In order to reduce echo sound when using the Hands-Free Kit, make sure that the speaker and microphone are not facing each other and keep microphone a generous distance from the speaker.

5.3.2 Cradle Installation

Choose an appropriate flat surface where the unit will not interface with driver’s movement or passenger’s comfort. The driver/user should be able to access the phone with ease. Using the four self-tapping screws provided, mount the supplied bracket on the selected area. Then with the four machine screws provided, mount the counterpart on the reverse side of the reverse side of the cradle. Secure the two brackets firmly together by using the two bracket joint screws provide. The distance between the cradle and the interface box must not exceed the length of the main cable.

5.3.3 Interface Box

Choose an appropriate flat surface ( somewhere under the dash on the passenger side is preferred ) and mount the IB bracket with the four self-tapping screws provided. Clip the IB into the IB bracket.

5.3.4. Microphone Installation

Install the microphone either by clipping I onto the sunvisor (driver’s side) or by attaching it to door post (driver’s side), using a velcro adhesive tape (not included).

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5.3.5 Cable Connections

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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.) Connect the kit’s power cable connector to the interface box power receptacle.

5.3.5.2 Antenna Cable Connection

Connect the antenna coupler cable connector from the cradle to the external antenna connector. ( Antenna is not included.)

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CHAPTER 2. NAM Input Method

(Inputting of telephone numbers included)

1. NAM Programming Method

1) Press “##77647269100” + “SEND” and th en, press “000000”

2) Press “1” key for entering “Service Prg.”.

● Usually pressing soft key will sav e the change.

● To exit service program, press “END” key.

3) MEID/ESN

You can see the MEID/ESN number.

Press softkey “OK” to edit more NAM1 items. Press softkey “Exit” to exit Service Programming.

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4) NAM1 Phone Number (MDN)

You can edit the NAM1 Phone Number (MDN).

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

5) NAM1 Phone Number (MIN)

You can edit the NAM1 Phone Number (MIN).

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

6) NAM1 Home SID

You can edit the NAM1 Home SID.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

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7) NAM1 Name

You can edit the NAM1 Name.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

8) More NAM1 Programming

You can decide to edit more NAM1 Name.

Press softkey “OK” to exit Service Programming. Press softkey “More” to edit more advanced NAM1 items.

9) Service Code

You can edit Service Code.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

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10) NAM1 MCC

You can edit NAM1 Mobile Country Code.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

11) NAM1 NMSID

You can edit NAM1 NMSID.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

12) NAM1 True IMSI MCC

You can edit NAM1 True IMSI MC

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

C.

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13) NAM1 True IMSI NMSID

You can edit NAM1 True IMSI NMSID.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

14) NAM1 PRL Enabled

You can see NAM1 PRL Enabled.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

15) CDMA Home SID/NID

You can edit NAM1 Home SID/NID pair.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

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16) NAM1 CDMA Pri. CH A

You can edit NAM1 CDMA Pri. Channel A.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

17) NAM1 CDMA Sec. CH A

You can edit NAM1 CDMA Secondary Channel A.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

18) NAM1 CDMA Pri. CH B

You can edit NAM1 CDMA Primary Channel B.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

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19) NAM1 CDMA Sec. CH B

You can edit NAM1 CDMA Secondary Channel B.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

20) Lockout SID/NID

You can edit Lockout SID/NID pair.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

21) NAM1 Home Sys. Reg.

You can edit NAM1 Home System Registration.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

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22) NAM1 Forn SID Reg

You can edit NAM1 Foreign SID Registration.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

23) NAM1 Forn NID Reg

You can edit NAM1 Foreign NID Registration.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

24) NAM1 ACC Ovld Class

You can view the NAM1 Access Overload Class.

Press softkey “OK” to edit more NAM1 items. Press softkey “Back” to edit previous NAM1 items.

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25) NAM2 Setting

You can decide to edit NAM2 items.

Press softkey “OK” to skip NAM2 items setting. Press softkey “Edit” to edit NAM2 related items. You can edit NAM2 items such as NAM1 items

26) Phone Model

You can see the Phone Model Number.

Press softkey “OK” to edit more items. Press softkey “Back” to edit previous items.

27) Slot Cycle Index

You can edit Slot Cycle Index.

Press softkey “OK” to save Slot Cycle Index. Press softkey “Back” to edit previous items.

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28) Powering Down

Restart.

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CHAPTER 3. Circuit Description

1. RF Transmit/Receive Part

1.1 Overview

The TX and RX part employs the Direct-Conversion system. The TX and RX frequencies are respectively

824.04~848.97 and 869.04~893.97 for cellular and 1850~1910 and 1930~1990 for PCS. The block diagram is shown in [Figure 1-1]. CDMA RF signals received through the antenna are separated by the Diplexer. RF Signal fed into the low noise amplifier in RFR6500(LNA) through the duplexer. Then, they are fed into Mixer in RFR6500. In RFR6500, the RF signal is changed into baseband signal directly. Then, this signal is changed into digital signal by the analog to digital converter (ADC, A/D Converter), and the digital circuit part of the MSM(Mobile Station Modem) 6550 processes the data from ADC. The digital processing part is a demodulator. In the case of transmission, RFT6150 receives OQPSK-modulated analog signal from the MSM6550A. The RFT6150 connects directly with MSM6550A using an analog baseband interface. In RFT6150, the baseband quadrature signals are upconverted to the Cellular or PCS frequency bands and amplified to provide signal drive capability to the power amp. After that, the RF signal is amplified by the Power Amp in order to have enough power for radiation. Finally, the RF signal is sent out to the cell site via the antenna after going through the duplexer.

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[Figure 1-1] RF Block Diagram of VX9100

Antenna

CDMA

DCN-Rx

DCN-Tx

PCS-Rx

PCS-Tx

GPS

HDET

RFR6500

F

ref

Loop Filter

for GPS

Processing

&Dist

PLL1

Camera

LO Gen

GPS VCO

3D, 2D

NC

Diversity Rx

VCO

OpenGL® ES

Graphics

Dual PAM

NC

H.263, H.264

MPEG-4

NC

Dual SAW

Rx RF

RFT6150

CDMA VCOs

Secondary Path

Rx1_Q

EVRC, QCELP

AMR, CMX,

Video

MP3, AAC,

MIDI

Rx1_I

Audio

Primary Path

Rx0_Q

UART2/RUIM1

UART3/RUIM2

&Dist

Gen

Rx0_I

USB On The

Keypad I/F

SD/SDIO

UART1

Go

PLL0

Diversity

Rx VCO

LO

SBI Control

MSM6500

Connectivity

EBI2

for CDMA Tx

F

ref

F

ref

Dual Memory

Rx ADC

Buses

EBI1

Loop Filter

VCTCXO

Buffer

Ref.

Bluetooth 1.1

Processor

Tx DAC

SBI

gpsOne

TX PLL

Processor

Circuits

Control

Tx VCO

Processor 1X,

GSM/GPRS

1X EV-DO

CDMA

Gain

Processors

PCS

DCN

Dual SAW

Tx RF

LO Gen &Dist

SBI Control

Tx_Q

QDSP4000

Modem

PLL

Tx_I

ARM926EJS

with Jazelle

MSM

JTAG I/F

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1.2 Description of RX Part Circuit

1.2.1 Quintplexer (DP100)

The Quintplexer consists of the Rx bandpass filter (BPF), the Tx BPF and the GPS filter (BPF) which has the function of separating Tx, Rx and GPS signals in the full Triplex system for using the common antenna. The Tx part BPF is used to suppress noises and spurious out of the Tx frequency band. The Rx BPF is used to receive only Rx signal coming from the antenna, which is usually called preselector. It’s main function is to limit the bandwidth of spectrum reaching the LNA and mixer, attenuate receiver spurious response and suppress local oscillator energy. As a result frequency sensitivity and selectivity of mobile phone increas e. The specification of VX9100 Quintplexer described below;

z PCS band

Tx Rx Tx to Rx (min) Pass Band 1850.5~1909.5 MHz 1930.5~1989.5 MHz Insertion Loss 3.9 dB max 4.2 dB max Return Loss 9.5 dB min 9.0dB min

Attenuation

z Cellular band

Pass Band 824~849 MHz 869~894 MHz Insertion Loss 2.6 dB max 3.4 dB max Return Loss 9.0 dB min 9.0dB min

Attenuation

z GPS band

Pass Band 1574.42~1576.42MHz Insertion Loss 1.9 dB m a x

40 dB min

(1930.5~1989.5MHz)

Tx Rx Tx to Rx (min)

40 dB min

(869~894MHz)

(1850.5~1909.5MHz)

(824~849MHz)

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50dB min

55dB min

53 dB (1850.5~1909.5MHz)

40 dB (1930.5~1909.5MHz)

5

5 dB (824~894MHz)

40 dB (869~894MHz)

Return Loss 9 min Isolation1 50 dB min(Cel Isolation2 45 dB min(PCS Tx à GPS)

l Tx à GPS)

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1.2.2 RFR6500 – LNA part (U108)

The RFR6500 has cellular, and PCS LNA, respectively. The characteristics of Low Noise Amplifier (LNA) are low noise figure, high gain, high intercept point and high reverse isolation. The frequency selectivity characteristic of mobile phone is mostly determined by LNA. The specification of VX9100 LNA is described below:

Parameter

Gain -19 -20 3 -3 14 15 dB

Noise Figure 20 20 4.5 6 1.3 1.1 dB

Input IP3 10 10 5 10 7 3 dBm

1.2.3 GPS LNA(U101)

The characteristics of Low Noise Amplifier (LNA) are low noise figure, high gain, high intercept point and high reverse isolation. The frequency selectivity ch aracteristic of mobile phone is mostly determined by LNA. The specification of VX9100 GPS LNA is described below

Low gain Middle gain High gain Units

Cellular PCS Cellular PCS Cellular PCS

UnitsGPS BandParameter

dB13.1Gain

dB0.77Noise Figure dBm3.41dB compression point dBm+7IIP3

1.2.4 RX RF Dual SAW Filter(F100)

The main function of RX RF SAW filter is to attenuate mobile phone spurious frequency, attenuate noise amplified by the LNA and suppress second harmonic originating in the LNA.

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LG CX9100 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual