LG RD10000 Service Manual

Features of RD10000

1. Wave Type

CELLULAR : G7W

●

PCS: G7W

●

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

CELLULAR PCS CELLULAR PCS

824.82 ~ 848.19 1850~1910 869.82~893.19 1930~1990

3. Rated Output Power : CELLULAR = 0.28W

PCS = 0.28W

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

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

MODE Part Name Voltage Current Power

CELLULAR AWT6321R 4.2V 400mA 0.28W

PCS AWT6321R 4.2V 400mA 0.28W

6. Functions of Major Semi-Conductors

Classification Function

MSM6550 Terminal operation control and digital signal processing

Memory MCP

(TYA000BC10H0GG)

RFR6500 Converts Rx RF signal to baseband signal RFT6150 Converts baseband signal to Tx RF signal

7. Frequency Stability

CELLULAR : ±0.5PPM

●

● PCS : ±0.1PPM

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Flash Memory (2Gbit) + SDRAM (1 Gbit)

Storing of terminal operation program

RD10000

CDMA Mobile Subscriber Unit RD10000

SERVICE MANUAL

DUAL BAND CDMA

[PCS/Cellular]

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

CHAPTER 2. Circuit Description…………………………..…………………………….26

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

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

CHAPTER 3. 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 Backlight……………………………………………………………………………………..97

3.5 Vibrator…………………………………………………………………………………….....99

3.6 Audio………………………………………………………………………………………...101

3.7 Touch Screen………………………………………………………………………………110

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CHAPTER 4. Safety………………………………………………..………………..………133 CHAPTER 5. Glossary………………….……………………………………………….…136 APPENDIX………………………………………………………………………………...……148

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General Introduction

The RD10000 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 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 TIA/EIA/IS-95-A/B/C

ANSI J-STD-008

Network TIA/EIA/IS-634

TIA/EIA/IS/651

TIA/EIA/IS-41-C

TIA/EIA/IS-124

Service TIA/EIA/IS-96-B

TIA/EIA/IS-99 TIA/EIA/IS-637 TIA/EIA/IS-657

Performance TIA/EIA/IS-97

* TSB –74: Protocol between an IS-95A system and ANSI J-STD-008

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TIA/EIA/IS-98

ANSI J-STD-018 ANSI J-STD-019

TIA/EIA/IS-125

Protocol between MS and BTS for Cellular & AMPS

Protocol between MS and BTS for PCS

MAS-BS

PCSC-RS

Intersystem operations

Nom-signaling data comm.

Speech CODEC

Assign data and fax

Short message service

Packet data

Cellular base station

Cellular mobile station

PCS personal station

PCS base station

Speech CODEC

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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 maximize the 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 th e signa l 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 be 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 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)C DMA : ±0.5PPM

2)PCS : ±0.1PPM

4.1.7 Antenna : FIXED Type (PIFA), 50 Ohm

4.1.8 Size and Weight

1)Si ze : 118(H) * 54(W) * 18.5(D) mm

2)Weight : 134 g (Approximately with standard battery)

4.1.9 Channel Spacing

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1)CELLULAR : 1.25M Hz

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)

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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

4.2.2 Local Oscillating Frequency Range :

CELLULAR : 1738.08MHz ~ 1787.94MHz PCS : 1715.56MHz ∼

4.2.3 Sensitivity

CELLULAR : -104dBm (C/N 12dB or more) PCS : -104dBm (C/N 12dB or more)

1768.89MHz

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 : 0.251W PCS: 0.251W

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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: ±

4.3.12 CDMA TX Conducted Spurious Emissions

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

2) PCS: 1.25MHz: - 42 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

150Hz

1.98MHz : - 54 dBc/30kHz below

1.98MHz : - 50 dBc/30kHz below

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 # Center Freq

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

824.640

825.870

827.100

828.330

829.560

830.790

832.020

833.250

834.480

835.890

Ch # Center Freq

(MHz)

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404 445 486 527 568 609 650 697 738 779

(MHz)

837.120

838.350

839.580

840.810

842.040

843.270

844.500

845.910

847.140

848.370

Ch # 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 # Center Freq

404 445 486 527 568 609 650 697 738 779

(MHz)

882.120

883.350

884.580

885.810

887.040

888.270

889.500

890.910

892.140

893.370

Ch # 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 Bluetooth mode : 2400 MHz ~ 2483.5 MHz

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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 phon e.

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. 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 MSM6550. The RFT6150 connects directly with MSM6550 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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TCXO

Sleep

TCXO

CLK

MSM

Data

[Figure 1-1] RF Block Diagram of RD10000

ANT

FLO

Mobile

Filter

FLO SAW

(

CH55

)

.

FLO

for FLO

Loop

Filter

RBR

Mobile

GPS

(

GPS LNA

ALM

Module

1412)

1000

RX_IP

G_IN

RX_QM

RX_QP

RX_IM

RBD 1000

16bit

Address

9bit

SBI

RX1Q

EBI2

ANT

GPS

.

Dual RX

SAW

filter

Duplexer

DCN

Mobile

CDMA

Diplexer

TxRx

Converter

G

D

P

D_

P _IN

RX1I

_L_

IN

OUT

RX0Q

RX0I

G

D _ L_IN

SBI

_ L_OUT

P _L_

_L _IN

IN

for GPS

Loop

Filter

ANT .

TxRx

RFR

RF to BB

6500

CDMA

Duplexer

PCS

TCXO

RF Front End

Coupler

PCS

Efficiency

High

Filter

SAW

PCS

To PMIC

for CDMA

Filter

Tx

Coupler

HDET

DCN

Dual

PAM

Filter

SAW

DCN

Converter

BB to RF

DCN

RFT 6150

Loop

SBI

TXQ

TXI

MSM

SD /SDIO

Keypad I/F

(Main LCD,Flash,

Camera )

(SUB LCD)

Connectivity

6550

4bit

Micro SD

(

GCC111

-

8 S-S-E1000)

AAT

Charge Pump

2842IBJ

AAT3155ITP

Charge Pump

MIC

SLEEP

Backup Battery Charger

EVRC, QCELP

AMR, CMX,

MP3

MIDI

,

AAC ,

EAR

Bluetooth v1.2

TCXO

MSM

Thermal Shutdown

LDO X 12

Processing

Vib- Touch

& Support

Camera

OpenGL®ES

H.

Graphics

MPEG-4

263

3

D ,

2D

UART up to

USB 1.1

468kbps

Motor

SIM Level Translator

RTC with two alarm

, H. 264

Stereo

Video

EAR MIC

A-IN

_CLK

ON/OFF Control & I2C I/F

Audio

RF Module

TCXO

Charger

UART2/RUIM

UART3/RUIM

2

Bluetooth

BT

Li-Ion Linear

USB 1.

UART

1

FS

1

8 bit

2M CMOS

RB04

,

AF

PMIC MAX8695

Power

PA DC/DC X 1

TCXO Buffer

5 Drivers

USB TCVR

DC/DC X 2

32khz Sleep

Crystal

RESET

Dual Memory

Buses

EBI1

EBI2

Rx ADC

SBI

Bluetooth 1.

Processor

Tx DAC

Processor

gpsOne

Processor

GSM/GPRS

2

16 bit

S

SUB KEY

Wide View

WQVGA

C E

TRST VCC GND

RTCK

TMS TDO TCK TDI

2. 8

’’

JTAG

I2C

EBI2

QWRITY

KEY IC

PP2106M

Dual LCD

Q W

E

QWRTY KEY

R T Y

U I

O

Processors

1X EV-

DO

Processor

1

X,

CDMA

QDSP4000

Modem

PLL

I2C

8bit

Driver IC

TSC2007

Window

Touch

TY9000A800GOGG

NAND

1 2 3

4 5

6 7

Stereo

8 9

A-IN

QWERTY Backlight

with Jazelle

EBI2

1GBit

EAR

ARM926EJS

JTAG I/F

32 bit

SDRAM

PCB Rev.

MSM Core

MSM

EBI1

512MBit

MCP

Check Circuit

Temp

I2C

Charge

Pump

Input

Control

I

2C

C

Input

B

Input

A

Z3X-BOX.COM

USB

1

.1

SG-B002CE-SCB

(48

Camera

Clock

Switch

Hall

dek

e

y

i

S

PWR KEY

END

PWR

/

MHz )

SSSS7

Switch

Hold

A 0202

CHARGER

48MHz

USB

UART

To MSM

Stereo Headset

Audio AMP

To Stereo

18pin MMI

To MSM: Voice Call

Recording flix

MIC

-17-

Mixer

Input

Modulator L

Modulator R

Oscillator

SSM

(1018

)

Class D

Speaker

_R

Speaker

(1018)

_L

Class D

Sound

3D

Output

Mixer

Receiver

(1107

)

EAR MIC

(Audio Amp

MAX9775

)

Ear Jack

Stereo Headset

18

MMI

(

4 Pole

)

LGE Internal Use Only

RD10000

1.2 Description of RX Part Circuit

1.2.1 Diplexer (F1001)

The main function of Diplexer is to prohibit the other band signals from flowing into the one band circuit and vice versa. RF designer can use common tri-band antenna regardless of frequency band (800, 1575 and 1900 MHz). The specification of RD10000 Diplexer is described below:

Cellular PCS

Frequency Range 824 – 894 MHz 1850 – 1990 MHz

Insertion Loss to

Common

Isolation

Temperature Range -30 to +85 deg

1.2.2 Duplexer (DP1001, DP1002)

The duplexer consists of the RX bandpass filter (BPF) and the TX BPF which has the function of separating TX and RX signals in the full duplex 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 increase. The specification of RD10000 duplexer described below ;

z PCS duplexer:

TX RX TX to RX (min)

Pass Band 1850~1910 MHz 1930~1990 MHz

0.5 dB Max

(At +25 deg)

18 dB Min (to PCS)

0.6 dB Max

(At +25 deg)

18 dB Min (to Cellular)

Insertion Loss 3.5dB max 3.0dB max

Return Loss 9.5dB min 9.5dB min

Z3X-BOX.COM

Attenuation 43dB min (1930~1990MHz)

z Cellular duplexer

TX RX TX to RX (min)

Pass Band 824~849 MHz 869~894 MHz

Insertion Loss 2.1B max 2.6dB max

Return Loss 10dB min 9dB min

Attenuation 46dB min (869~894MHz) 54dB min (824~849MHz)

52dB min

(1850~1910MHz)

-18-

54dB (1850~1910MHz)

45dB (1930~1990MHz)

56dB (824~849MHz)

47dB (869~894MHz)

LGE Internal Use Only

RD10000

1.2.3 RFR6500 – LNA part (U1011)

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 RD10000 LNA is describ ed below:

Parameter Low gain Middle gain High gain Units

Cellular PCS Cellular PCS Cellular PCS

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

1.2.4 GPS LNA(U1004)

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 RD10000 GPS LNA is described below

Parameter GPS Band Units

Gain 13.1 dB

Noise Figure 0.77 dB

1dB compression point 3.4 dBm

IIP3 +7 dBm

1.2.5 RX RF SAW FILTER(F1007, F1008)

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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-19-

LGE Internal Use Only

RD10000

1.2.6 RFR6500 - Down-converter Mixers part (U110)

The RFR6500 device performs signal down-conversion for Cellular, PCS and GPS tri-band applications. It contains all the circuitry (with the exception of external filters) needed to support conversion of received RF signals to Baseband signals. The three down-converting Mixers (Cellular, PCS and GPS), and a programmable PLL for generating RX LO frequency and an RX LO Buffer Amplifier and RX Voltage Controlled Oscillator. The GPS LNA & mixers offer the most advanced and integrated CDMA RX solution designed to meet cascaded Noise Figure (NF) and Thirdorder Intercept Point (IIP3) requirements of IS-98D and J-STD-018 specifications for Sensitivity, Two-Tone Intermodulation, and Single-tone Desensitization. Operation modes and band selection are specially controlled from the Mobile Station Modem MSM6550. The specification of RD10000 Mixers is described below:

Parameter Low gain High gain Units

Cellular PCS Cellular PCS

Noise Figure 25 27 7.9 12 dB

Input IP3 -5 -11 4 4 dBm

Input IP2 30 30 56 56 dBm

1.3 Description of Transmit Part Circuit

1.3.1 RFT6150 (U1012)

The RFT6150 Base-band to RF Transmit Processor performs all TX signal-processing functions required between digital Base-band and the Power Amplifier Modulator (PAM). The Base-band quadrate signals are up-converted to the Cellular or PCS frequency bands and amplified to provide signal d rive capability to the PAM. The RFT6150 includes mixers for up-converting analog Base-band to RF, a programmable PLL for generating TX LO frequency a TX LO Buffer Amplifier and TX Voltage Controlled Oscillator, cellular and PCS driver amplifiers and TX power control through an 85 dB VGA. As added benefit, the single sideband up-conversion eliminates the need for a band pass filter normally required between the up-converter and driver amplifier.

I, I/, Q and Q/ signals proceed from the MSM6550 to RFT6150 are analog signal. In CDMA mode, These signals are modulated by Offset Quadrature Phase Shift King (OQPSK). I and Q are 90 deg. out of phase, and I and I/ are 180 deg. The mixers in RFT6150 converts baseband signals into RF signals. After passing through the upconverters, RF signal is inputted into the Power AMP.

Z3X-BOX.COM

-20-

LGE Internal Use Only

RD10000

zRFT6150 Cellular and PCS CDMA RF Specifications

Parameter Condition Min. Type. Max. Units

Rated Output Power

Min Output Power

RX band noise power

ACPR

1.3.2 Power Amplifier(U1008)

The Dual power amplifier that can be used in the PCS and CDMA mode has linear amplification capability and high efficiency. For higher efficiency, it is made up of one MMIC (Monolithic Microwave Integrated Circuit) for which RF input terminal and internal interface circuit are integrated onto one IC after go ing through the AlGaAs/GaAs HBT (heterojunction bipolar transistor) process. The module of power amplifier is made up of an output end interface circuit including this MMIC. The maximum power that can be inputted through the input terminal is +10dBm and conversion gain is about 26.5dB. RF transmit signals that have been amplified through the power amplifier are sent to the duplexer. .

Average CDMA Cellular

Average CDMA PCS

Average CDMA Cellular

Average CDMA PCS

CDMA Cellular

CDMA PCS

Cellular: Fc±885kHz

PCS : Fc±1.25MHz

7 9

-75

-136

-133

-56

-57

dBm dBm

dBm/Hz

dBc/30kHz

1.4 Description of Frequency Synthesizer Circuit

1.4.1 Voltage Control Temperature Compensation Crystal Oscillator (VCTCXO, U1010)

The temperature variation of mobile phone can be compensated by VCTCXO. The reference frequency of a mobile phone is 19.2 MHz. The receiver frequency tuning signals called TRK_LO_ADJ from MSM as 0.5 V~2.5 V DC via R and C filter in order to generate the reference frequency of 19.2 MHz and input it into the frequency synthesizer. Frequency stability depending on temperature is ±2.0 ppm.

Z3X-BOX.COM

-21-

LGE Internal Use Only

RD10000

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 main keypad/touch 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 MSM6550. It is made up of a keypad backlight part that illuminates the keypad, LCD part that displays the operation status onto the screen, and a receptacle that receives and sends out voice and data with external sources.

2.2.2 Voice Processing Part

The voice processing part is made up of an audio codec used to convert MIC signals into digital voice signals and digital voice signals into analog voice signals, amplifying part for amplifying the voice signals and sending them to the ear piece, amplifying part that amplifies ringer signals coming out from MSM6550, and amplifying part that amplifies signals coming out from MIC and transferring them to the audio processor.

2.2.3 MSM (Mobile Station Modem) 6550 Part

MSM is the core elements of CDMA terminal and carries out the functions of CPU, encoder, interleaver, deinterleaver, Viterbi decoder, Mod/Demod, and vocoder.

2.2.4 Memory Part

The memory part is made up of a NAND Flash memory and a SDRAM for storing data.

2.2.5 Power Supply Part

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The power supply part is made up of circuits for generating various types of power, used for the digital/voice processing part.

-22-

LGE Internal Use Only

RD10000

2.3 Circuit Description

2.3.1 Keypad/LCD and Receptacle Part

Once the keypad is pressed, the key signals are sent out to MSM6550 for processing. In addition, when the key is pressed, the keypad/LCD lights up through the use of 7 LEDs. The terminal status and operation are displayed on the screen for the user with the characters and icons on the LCD.

2.3.2 Audio Processing Part

MIC signals are amplified through OP AMP, inputted into the audio codec (included in MSM6550) and converted into digital signals. Oppositely, digital audio signals are converted into analog signals after going through the audio codec. These signals are amplified at the audio amplifier and transmitted to the ear-piece. The signals from MSM6550 activate the ringer by using signals generated in the timer in MSM6550.

2.3.3 MSM Part

MSM6550 is the core element of CDMA system terminal that includes ARM926EJ-S microprocessor core. It supports both CDMA and Digital FM, operating in both the cellular and PCS spectrums. The subsystems within the MSM6550 include a CDMA processor, a DFM processor, a multi-standard Vocoder, an integrated CODEC with earpiece and microphone amplifiers, general-purpose ADC for subsystem monitoring, an ARM926EJ-S microprocessor, and Universal Serial Bus(USB) supporting forward and reverse link data communications of 307.2 Kbps simultaneously. And it also contains complete digital modulation and demodulation systems for CDMA standards, as specified in IS-95-A/B/C. In MSM, coded symbols are interleaved in order to cope with multi-path fading. Each data channel is scrambled by the long code PN sequence of the user in order to ensure the confidentiality of calls. Moreover, binary quadrature codes ar e used based on walsh functions in order to discern each channel. Data created thus are 4-phase modulated by one pair of Pilot PN code and they are used to create I and Q data. When received, I and Q data are demodulated into symbols by the demodulator, and then de-interleaved in reverse to the case of transmission. Then, the errors of data received from viterbi decoder are d etected and corrected. They are voice-decoded at the vocoder in order to output digital voice data.

Z3X-BOX.COM

-23-

LGE Internal Use Only

RD10000

TCXO

Sleep

TCXO

CLK

MSM

Data

[Figure 2-2] Block Diagram of Digital/Voice Processing Part

ANT

FLO

Mobile

Filter

FLO SAW

(

CH

55)

.

FLO

for FLO

Loop

Filter

RBR

Mobile

GPS

(

GPS LNA

ALM

Module

1412)

1000

RX_IP

G _IN

RX_QM

RX_QP

RX_IM

RBD 1000

16bit

Address

9bit

SBI

RX1Q

EBI2

ANT

GPS

.

Dual RX

SAW

filter

Duplexer

DCN

Mobile

CDMA

Diplexer

TxRx

Converter

P_L _

OUT

RX0I

G

D _L

_IN

SBI

_L _OUT

P_

_L

L_

_IN

IN

for GPS

Loop

Filter

D

P

D

_L_

_IN

OUT

RX0Q

RX1I

ANT .

TxRx

RFR

RF to BB

6500

CDMA

Duplexer

PCS

TCXO

RF Front End

Coupler

PCS

Efficiency

High

Filter

SAW

PCS

To PMIC

for CDMA

Filter

Tx

Coupler

HDET

DCN

PAM

Dual

Filter

SAW

DCN

Converter

RFT6150

BB to RF

DCN

Loop

TXQ

SBI

TXI

MSM

Processing

Camera

OpenGL®ES

H.

Graphics

263

MPEG-

3D ,

2D

, H. 264

Video

4

EVRC

AMR,

MP3, AA C,

MIDI

,

QCELP

CMX

,

UART

Audio

3/ RUIM

2

2/ RUIM

1

USB 1

UART1

.1 FS

8bit

EAR MIC

EAR

UART up to

Vib- Touch

USB 1.1

& Support

468kbps

Stereo

Motor

SIM Level Translator

A-IN

_CLK

ON/OFF Control & I2C I/F

RTC with two alarm

MIC

SLEEP

Backup Battery Charger

Bluetooth v1.2

RF Module

TCXO

MSM

TCXO

Thermal Shutdown

LDO X 12

Bluetooth

BT

Li-Ion Linear

Charger

2

M CMOS

RB04

,AF

Keypad I/

SD/ SDIO

F

(Main LCD,Flash,

Camera)

(SUB LCD)

Connectivity

6550

4bit

Micro SD

(GCC111

-

8S-SE

1000)

AAT2842IBJ

Charge Pump

AAT3155ITP

Charge Pump

PMIC MAX

Power

EBI 2

EBI 1

Buses

SUB KEY

Dual Memory

Rx ADC

S C E

TRST VCC GND

RTCK

Wide View

SBI

TMS TDO TCK TDI

16bit

WQVGA

Tx DAC

Processor

2. 8

’’

JTAG

Bluetooth

Processor

1

.2

EBI2

Dual LCD

Processor

gpsOne

I

2C

KEY IC

PP2106M

Q W

E

QWRTY KEY

R T Y

U I O

GSM/GPRS

QWRITY

Processors

1X EV

-

DO

Processor 1

CDMA

X ,

QDSP4000

Modem

PLL

I2C

8bit

TSC2007

Driver IC

Window

Touch

TY9000A800GOGG

NAND

1 2 3

4 5 6

7 8

Stereo

A- IN

9

QWERTY Backlight

with Jazelle

EBI2

1

GBit

EAR

ARM 926

EJS

JTAG I/F

32 bit

SDRAM

PCB Rev

.

MSM Core

MSM

EBI1

512MBit

MCP

Check Circuit

Temp

I2C

8695

PA DC/DC X 1

TCXO Buffer

5 Drivers

USB TCVR

DC/DC X 2

32khz Sleep

Crystal

RESET

Charge

Pump

Control

I2C

Input

C

Input

B

Input

A

Z3X-BOX.COM

USB

1

.1

SG-B002CE-SCB

(

Camera

48

Clock

Switch

Hall

dek

e

i

y

S

PWR KEY

END

PWR

/

MHz)

CHARGER

48MHz

SSSS7

Switch

Hold

A 0202

USB

UART

To MSM

Stereo Headset

Audio AMP

To Stereo

18pin MMI

To MSM: Voice Call

Recording flix

MIC

-24-

Mixer

Input

(

Audio Amp

MAX 9775

Modulator R

Speaker

(1018)

_

R

Class D

Modulator L

Speaker

(1018

)

_L

Class D

Sound

Output

Mixer

3D

Receiver

(1107

)

EAR MIC

)

Ear Jack

Stereo Headset

18pin

MMI

( 4 Pole

)

Oscillator

SSM

LGE Internal Use Only

RD10000

2.3.4 Memory Part

MCP contents 2048Mbits NAND FLASH memory and 1024Mbits SDRAM. In the NAND Flash Memory part of MCP are programs used for terminal operation. The programs can be changed through downloading after the assembling of terminals. On the SDRAM data generated during the terminal operation are stored temporarily.

2.3.5 Power Supply Part

When the battery voltage (+3.7V) is fed and the PWR key of keypad is pressed, U5002(PMIC) is activated by the PWR_ON_SW signal, and The PWRON signal is held high, Buck and LDO1,2,3 are turned on; when LDO1 reaches 87% of its final value a 60ms reset timer is started at after which RESET\ is asserted high. Now the BB Processor is initialized and will assert PWRHOLD high. PWRHOLD maintains the power on.

The two Buck converters / LDO1,2,4 in PMIC are generating the +1.4V_MSMC, +1.8V_MSMP1, +2.6V_MSMP3, +2.8V_LCD, and +2.6V_MSMA respectively.

The Rx part LDO3 in PMIC is operated by the control signal SLEEP/ from MSM6550

The Tx part LDO4 in PMIC is operated by the control signal IDLE/ from MSM6550.

The TCXO part LDO5 in PMIC is operated by the control signal TCXO_EN/ from MSM6550.

2.3.6 Logic Part

The logic part consists of internal CPU of MSM, RAM, MCP. The MSM6550 receives TCXO (=19.2MHz) from the U1010 and controls the phone in CDMA modes. The major components are as follows:

CPU

The ARM926EJ-S microprocessor includes a 3 stage p ipelined RISC architecture, both 32-bit ARM and 16-bit THUMB instruction sets, a 32-bit address bus, and a 32-bit internal data bus. It has a high performance and low power consumption.

MCP

NAND Flash is used to store the terminal’s program. Using the down-loading program, the program can be changed even after the terminal is fully assembled.

SDRAM is used to store the internal flag information, call processing data, and timer data.

KEYPAD

For key recognition, key matrix is setup using key encoder IC . 3 LEDs (EL lamp) and backlig ht circuitry are included in the keypad for easy operation in the dark.

LCD MODULE

LCD module contains a controller which will display the information onto the LCD by 16-bit data from the MSM6550. It is also supplied stable +2.8V_LCD by Out6 in U5002 for wide view angle and LCD reflects to

improve the display efficiency. 4 LEDs is used to display LCD backlight.

Z3X-BOX.COM

-25-

LGE Internal Use Only

RD10000

1 Rx Part Trouble

1.1 DCN Rx

CHAPTER 3. Trouble Shooting

Test Point

Mobile S/W

Diplexer

DCN_Duplexer

Start

Rx TEST SETUP (Joyphone)

- Test Channel: 384

- Test Band: US Cellular

- SID: 2004

- Sect or Power: -30 dBm Spectrum Analyzer Sett ing

Oscilloscope Setting

1. Check

DC Power Supply circuit

Z3X-BOX.COM

RFR6500

VCTCXO

Check flow

3. Check

Control signal

4. Check

RF Signal path

2. Check VCTCXO

-26-

NO

5. Check

Rx I/Q data

Redownload S /W, Cal

LGE Internal Use Only

RD10000

1.1.1 Checking DC Power supply circuit (PMIC)

Test Point

R5013

R5014

Circuit Diagram

Z3X-BOX.COM

TP1

TP2

-27-

LGE Internal Use Only

RD10000

Start

Checking Flow

Check R5014(TP2)

+

2

85 V_ RX is OK?

.

YES

Check R5013(TP1)

+2.6V_MSMP3 is OK?

YES

DC Power supply Circuit is OK. See next Page to check

VCTCXO circuit

NO

The Problem may be Lo gic part

Refer to Logic troubleshoot

The Problem may be Lo gic part

Refer to Logic troubleshoot

Z3X-BOX.COM

-28-

LGE Internal Use Only

RD10000

1.1.2 Checking VCTCXO circuit

U1010 pin4

Test Point

U1010 pin3

Circuit Diagram

TP2

TP1

Z3X-BOX.COM

TP1

-29-

LGE Internal Use Only

LG RD10000 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual