Voxtel RX 600 User manual

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Model: RX 600
Service Level: Level 1 ~Level 4
Version: 1v1

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TABLE OF CONTENTS
1 INTRODUCTION 4
1.1 OVERVIEW 4
1.2 SPECIFICATIONS 4
2 OVERVIEW OF GSM OPERATION 6
2.1 CELLULAR PHONE CONCEPT 6
2.2 GSM-GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS 6
2.3 GSM SYSTEM 7
2.4 SERVICE AREA 9
3 CASTOR HARDWARE SPECIFICATIONS 10
3.1 RF SUBSYSTEM 10
3.2 BASE-BAND SUBSYSTEM 11
3.3 BASE-BAND PARTS DETAILS 14
3.4 ACOUSTIC SPECIFICATIONS 21
3.5 CE MARKING 21
3.6 RELATED PERFORMANCE 22
4 CIRCUIT SCHEMATICS 23
4.1 MEMORY CIRCUIT 23
4.2 SIM CARD CIRCUIT 23
4.3 SPEAKER & RECEIVER 2-IN-1 CIRCUIT 24
4.4 MICROPHONE 25
4.5 LCM BACKLIGHT AND LED CIRCUIT 25
4.6 VIBRATOR CIRCUIT 25
4.7 POWER MANAGEMENT & CHARGING CIRCUIT 26
4.8 HEADSET 28
4.9 BLUETOOTH & CHIP ANTENNA 28
4.10 KEYPADS 30
4.11 MT6219 30
4.12 ANTENNA & SWITCH 32
4.13 AMPLIFIER (SKY77328) 33
4.14 MT6129 & SAW FILTERS 33
5 SOFTWARE DOWNLOAD 34
5.1 SYSTEM REQUIREMENTS 34
5.2 RX600 USB2COM DOWNLOAD CABLE 34
5.3 INSTALLATION OF RX600 DOWNLOAD TOOL 35
5.4 HOW TO DOWNLOAD SOFTWARE? 36
6 DISASSEMBLY/ASSEMBLY PROCEDURE 39
6.1 INTRODUCTION 39

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6.2 RECOMMENDED TOOLS 39
6.3 DISASSEMBLY PROCEDURE 40
6.4 ASSEMBLY PROCEDURE 45
7 TROUBLESHOOTING 46
7.1 LEVEL 1 & 2 TROUBLESHOOTING CHART 46
7.2 MANUAL MMI TEST MODE 49
7.3 LEVEL 3 & 4 TROUBLESHOOTING-BASEBAND 51
7.3.1 BASEBAND SUBSYSTEM 51
7.3.2 KEY COMPONENTS PLACEMENT 52
MAIN BOARD ASSEMBLY-BOTTOM 52
MAIN BOARD ASSEMBLY-TOP 53
BLOCK DIAGRAM 54
7.3.3 BASEBAND SUBSYSTEM CIRCUIT SCHEMATICS 54
7.4 LEVEL 3 & 4 TROUBLESHOOTING-RF 55
7.4.1 RF SUBSYSTEM 55
7.4.2 KEY COMPONENTS PLACEMENT 56
FRONT-END & TRANSCEIVER 56
BLUETOOTH 57
BLOCK DIAGRAM 58
7.4.3 RF SUBSYSTEM CIRCUIT SCHEMATICS 59
7.5 LEVEL 4 SERVICE GUIDELINE FOR RF SUBSYSTEM 60
7.5.1 RECEIVER PAT H 60
7.5.2 TRANSMITTER PAT H 65
7.5.3 AUTOCAL META TOOL 69
7.5.4 BLUETOOTH SUBSYSTEM 70
8 APPENDIX 72
E
XPLODED VIEW & PCB ASSEMBLY PLACEMENT 72

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1 Introduction
This document elaborates the functions and details of RX600, a tri-band
GSM900/DCS1800/PCS1900 GSM feature phone with GPRS class-12function, as well
as the information related to maintenance procedure and trouble-shootings.
1.1 Overview
RX600 is a compact MP3 slider type phone with NAND flash and RS-MMC card.The target
market focus on the young generation who addicts to music and understand how to download
music from the Internet. Pluto provides 1.8” 176*220 65k TFT and 1.3M CMOS.It’s display
moreover, RX600 emphasizes the acoustic performance; it provides 64 polyphonic ring tong.
Also, the user can adopt his favorite MP3 music as it ring tong. The GPRS function plus
WAP2.0 /OMA DRM/SMS/EMS/MMS1.1 provide user Internet access in mobile environment.
Email function enable user read message without interruption..
1.2 Specifications
Basic Features
Dimension (Excluding Antenna) 103 x 43 x 17
Weight (Flex & Volume) 75 g
Volume 75 cc
A
ntenna Internal
Talk Time / Stand by time 740 mAh
Charging time 2.5-5 hrs/140-200 hurs
Main Display Type / Resolution / Color
Depth Switching type (finish charge in 2.5 hours)
Main Backlight Color / Type TFT/1.8" 176*220/65K Color
Keypad Backlight Color / Type No
Major Chipsets
Digital Base-band Chip MT6219
A
nalog Base-band Chip MT6219
Power Amplifier MT6318
Transceiver MT6129
Liquid Crystal Display Waxin
Memory Configuration (min.) 128 + 32 + 1G
Backend IC No (ISP inside)
Camera CMOS Impac

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Battery Sanyo Cell
Bluetooth CSR
I/O
I/O Connector Yes
External RF Connector Yes
A
C Charging Jack Yes
Earphone Mic. Jack Yes
Bluetooth Yes
USB Support Speed 921.6Kbps
USB Support Class Mass storage/CDCACM
USB Charging Yes
Extended Memory Mini SD & NAND Flash
Speaker 2 in 1
Mechanical Features
A
ppearance Bar type
Navigation Key 4ways combined
Numeric Key 12 Pads
Side Key Yes
Strap Hole Yes
System / Service Support
Support Band 900/1800/1900
Speech Codec HR/FR/EFR
CSD / Fax Up to 14.4K
GPRS Multi-slot Class Class 10
GPRS Terminal Class Class B
GPRS Coding Scheme CS1, CS2, CS3, CS4

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2 Overview of GSM Operation
2.1 Cellular Phone Concept
The cellular system was first used to provide radiotelephone service in the frequency
range 890-960 MHz. A cellular system provides higher call handling capacity and system
availability than would be possible with conventional radiotelephone systems (those
which require total system area coverage on every operating channel) by dividing the
system coverage area into several adjoining sub-areas or cells.
Each cell contains a base station (cell site) that provides transmitting and receiving
facilities, for an allocated set of duplex frequency pairs (channels). Since each cell is a
relatively small area, both the cell site and the radiotelephone that it supports can
operate at lower power levels than would be used in conventional systems.
Using this technique, radiation on a given channel is virtually contained in the cell
operating on that channel and, to some extent, those cells directly adjacent to that cell.
Since the coverage area of a cell on a given channel is limited to a small area
(relative to the total system coverage area), a channel may be reused in another cell
outside the coverage area of the first. By this means, several subscribers may operate
within the same geographic area, without interference with each other, on a single
channel.
2.2 GSM-Global System for Mobile communications
Unlike former cellular systems, GSM uses digital radio techniques. The GSM system
has the following advantages over previous analogue systems:
 International Roaming - Due to international harmonization and standardization, it will be
possible to make and receive calls in any country, which supports a GSM system.
 Digital Air Interface - The GSM phone will provide an entirely digital link between the
telephone and the base station, which is, in turn, digitally linked into the switching
subsystems and on into the PSTN.
 ISDN Compatibility - ISDN is a digital communications standard that many countries are
committed to implementing. It is designed to carry digital voice and data over existing
copper telephone cables. The GSM phone will be able to offer similar features to the
ISDN telephone.
 Security and Confidentiality – Telephone calls on analogue systems can very easily be
overheard by the use of a suitable radio receiver. GSM offers vastly improved

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confidentiality because of the way in which data is digitally encrypted and transmitted.
 Better Call Quality - Co-channel interference, handover breaks, and fading will be dealt
with more effectively in the digital system. The call quality is also enhanced by error
correction, which reconstructs lost information.
 Efficiency - The GSM system will be able to use spectral resources in a much more
efficient way than previous analogue.
2.3 GSM System
In the figure below, the area bounded by bold lines represents the total coverage
area of a hypothetical system. This area is divided into several cells, each containing a
cell site (base station) operating on a given set of channels which interfaces
radiotelephone subscribers to the telephone switching system.
The radiotelephones themselves are capable of operation on any channel in the
system, allowing them to operate in any cell. Due to the low power requirements for
communications between radiotelephones in a particular cell and the cell site, operating
channels may be repeated in cells that are outside the coverage area of each other.
For example, presume that cell A operates on channels arbitrarily numbered 1
through 8, cell B operates on channels 9 through 16, cell C operates on channels 17
through 24 and cell D operates on channels 1 through 8 (repeating the usage of those
channels used by cell A). In this system, subscribers in cell A and subscribers in cell D

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could simultaneously operate on channels 1 through 8.
The implementation of frequency re-use increases the call handling capability of the
system without increasing the number of available channels. When re-using identical
frequencies in a small area, co-channel interference can be a problem. The GSM
system can tolerate higher levels of co-channel interference than analogue systems, by
incorporating digital modulation, forward error correction and equalization. This means
that cells using identical frequencies can be physically closer, than similar cells in
analogue systems. Therefore the advantage of frequency re-use can be further
enhanced in a GSM system, allowing greater traffic handling in high use areas.
By incorporating Time Division Multiple Access (TDMA) several calls can share the
same carrier. The carrier is divided into a continuous stream of TDMA frames, each
frame is split into eight time slots. When a connection is required the system allocates
the subscriber a dedicated time slot within each TDMA frame. User data (speech/data)
for transmission is digitized and sectioned into blocks. The user data blocks are sent as
information bursts in the allocated time slot of each TDMAframe.
The data blocks are modulated onto the carrier using Gaussian Minimum Shift
Keying (GMSK), a very efficient method of phase modulation.
Each time an information burst is transmitted, it may be transmitted on a different
frequency. This process is known as frequency hopping. Frequency hopping reduces
the effects of fading, and enhances the security and confidentiality of the link. A GSM
radiotelephone is only required to transmit for one burst in each frame, and not
continually, thus enabling the unit to be more power efficient.
Each radiotelephone must be able to move from one cell to another, with minimal
inconvenience to the user. The mobile itself carries out signal strength measurements on
adjacent cells, and the quality of the traffic channel is measured by both the mobile and
the base station. The handover criteria can thus be much more accurately determined,
and the handover made before the channel quality deteriorates to the point that the
subscriber notices.
When a radiotelephone is well within a cell, the signal strength measured will be high.
As the radiotelephone moves towards the edge of the cell, the signal strength and
quality measurement decreases.
Signal information provides an indication of the subscriber’s distance from the base
station. As the radiotelephone moves from cell to cell, its control is handed from one
base station to another in the new cell.

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This change is handled by the radiotelephone and base stations, and is completely
transparent to the user.
2.4 Service Area
A service area, where phone calls can be originated and received, is defined by the
system operators. (Because this is a radio system, there is no exact boundary that can
be drawn on a map.) If the telephone is outside a coverage area, the (no service)
indicator will illuminate and calls will be unable to be placed or received. If this happens
during a conversation, the call will be lost. There may also be small areas within a
particular service area where communications may be lost.
The radiotelephone’s identity information is held by its local GSM system in its Home
Location Register (HLR) and Visitor Location Register (VLR). The VLR contains identity
information on all local active radiotelephones. Should you roam to another area, system
or country the radiotelephones identity information is sent to the VLR in the new system.
The new system will then check the radiotelephones details with your home system for
authenticity. If everything is in order, it will be possible to initiate and receive calls within
the new cell.

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3 Castor Hardware Specifications
3.1 RF Subsystem
RX600 supports 900/1800/1900 bands as well as GPRS function. It supports GPRS
class 12, i.e. the maximum uplink slot number is 4; the maximum downlink slot number
is 4. The key components chosen for accomplishing the above requirements are listed
below:
 Power amplifier --- SKY77328 (SKYWORKS), which is capable of supporting GPRS
class12 and quad-band application.
 Transceiver IC --- MT6129 (MTK), which is GSM850/EGSM/DCS/PCS quad-band design
with GPRS class-12 capability.
 Antenna switch --- C085TK (Hitachi metals), which is as the duplexer between
transmission / reception route for EGSM/DCS/PCS bands.
 RF Clock --- 26MHz VC-TCXO, which is the fundamental reference frequency for
transceiver PLL synthesizer and the fundamental frequency of base band chipset after
divided by two.
The block diagram of RF section is as below:
RF Block Diagram

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3.2 Base-band Subsystem
RX600 adopts MTK ARM7EJ-S 32-bit RSIC GSM/GPRS BB chipset includes
MT6219, MT6305. It supports radio interface for EGSM900, DCS1800 and PCS1900.
For data service, it supports 14.4Kbits/sec GPRS. For voice service, it supports adaptive
multi-rate, enhanced full-rate, full-rate, and half-rate. It also supports data encryption
algorithm for GSM network operation including A5/1 and A5/2 algorithms. Following
shows the base-band circuit block diagram.
RF
MODULE
MT6219
SPEECH/AUDI
O
OUTPUT
SPEECH/AUDI
O
INPUT
KEYPAD
EXTERNAL MEMORY
INTERFACE
MELODY
LCD
TCVCXO
AFC
APC
TX I/Q
RX I/Q
BPI
BSI
ALERT
ER
SIM
SUPPLY
VOLTAGES
JTAG
UART
IRDA
POWER
MANAGEMENT
CIRCUITRY
SERIAL
LCD
SYSCLK
SERIAL
LCD
MMC/SD/MS
MSPRO
USB
AUXADC
1 2 3
4 5 6
7 8 9
*0 #
CMOS
SENSOR
HIFI
STEREO
OUTPUT
FM STEREO
RADIO INPUT
DEBUGGER
PWM
NAND
FLASH LCD
8-BIT PARALLEL
INTERFACE
FLASH
SRAM
PSRAM
IMAGE INPUT
Base-band block diagram

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 Component and Function List
Product Segment Color basic feature phone
Product Description Case changeable mini phone
Memory configuration Toshiba 128Mb+32Mb+512Mb (MCP)
Baseband Chip MT6219
Power Management IC MT6305B
Power Amplifier SKY77328
Transceiver MT6129
LCM 1.8” 176*220 65K TFT
CMOS Camera 1.3M pixels CMOS sensor
Battery + Packing Cell: 力神 760mAhr (Lithium ion)
Packing vendor: HL (宏磊)
Major Features List Pluto
Supported Bands 900/1800/1900 MHz Tri-band
GPRS Class Class 12
Circuit Switch Data CSD up to 9.6 kbps
Supported Voice Codec AMR/EFR/ FR/HR
Main LCD Display 1.8” 176(R, G, B)*220 65K TFT
Antenna Type Embedded
Charger Type Switch
Loud speaker-hands free Yes
Polyphonic (chords) S/W Polyphonic up to 64 tones
WAP WAP 2.0
EMS R4 Yes
Concatenated SMS Yes
Intelligent Text input T9
Games Yes
JPEG Yes
Bluetooth CSR Bluetooth 1.1
USB Connection USB 1.1 Slave
FM Radio Yes
PC Tools Download/ Modem driver
Wallpapers Yes
Melody Composer Yes
ME Address book 500
Caller Photo Display Yes

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Caller Groups Yes
Calendar/Note/Appointment Yes
Alarm Clock Yes
Calculator Yes

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3.3 Base-band Parts Details
MT6219 The MT6219 is the baseband processing solution offered by MTK as part of the 32-bit ARM7EJ-S RSIC
processor chipset Family. The chip integrates a powerful DSP, ARM7EJ-S processor, and extensive set of
peripherals that support applications such as MMS, EMS and MP3. The MT6219 allow advanced speech
algorithms, such as AMR and signal processing function such as echo suppression, cancellation and
noise reduction. The MT6219 supports pseudo-static RAM, page and burst flash memories, USB,
SD/MMC and devices such as camera modules. It can be divided into three main subsystems.
● MCU Control processor subsystem
ARM7EJ-S 32-bit RISC Processor
26/52 MHz operating frequency
JAVA hardware acceleration
512 KB zero-wait-state on-chip SRAM
● Multi-media subsystem
JPEG codec
2D accelerator
Wavetable synthesis
MPEG-4/H.263 codec
Full speed USB 1.1
High throughput hardware re-size capable of tailoring image to arbitrary
MMC/SD, MS and MS PRO host controller
DSP recorder
● User interface
6-row x 7-column keypad scanner
3 UARTs with hardware flow control and speed up to 921600 bps
7-channel auxiliary ADC
Six level or edge sensitive external interrupts
MT6305B The MT6305B is a power management system chip optimized for GSM handsets. It contains seven LDOs,
one to power each of the critical GSM sub-block. Sophisticated controls are available for power-up during
battery charging, keypad interface, and RTC alarm. The MT6305 is optimized for maximum battery life,
featuring a ground current of one 107uA and 187uA when the phone is in standby and operation
respectively.
The MT6305 contains three open drain output switches for LED, alarm, and vibration control. The SIM
interface provides the level shift between SIM card and microprocessor.
● Power Management Section
Voltage regulator
Battery charger

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Battery production
Microphone MARQUESS HMO4-EO3NC-B03G
Sensitivity：-42±3 dB at 1kHz, 1V/Pa
Output Impedance：2.2k+-10% ohm at 1kHz,
S/N Ratio (A curve)：min 58 dBv/Pa at 1kHz,
Dimension：φ5.5 * 2.9 mm
Directional characteristic：omni-directional
Operating voltage：DC 2V
Loud
Speaker
Part number：Speaker 18C-8B-04W
Impedance：8Ω±1.2Ωat 2KHz, 1Vrms.
SPL for Dynamic Speaker: 87 ±3 dB at 0.1W/0.1m 1KHz.
Resonance Frequency (Fo)：800Hz ±160 Hz, 1V
Rated Input (Nom./Max.) for Speaker：0.8W/1.0W
Frequency Range：Fo ~ 20 kHz.
Dimension：ψ18 × 4.2T [mm]
Stacked-MCP
Architecture
(128Mbit
Flash +
32Mbit
PSRAM)
Toshiba TV0057A002AAGD
Stacked Multi-Chip Product (MCP) Flash Memory , pSRAM and NAND
A mixed multi-chip package containing a 33,554,432-bit pseudo static RAM and a
134,217,728-bit Nor Flash Memory and a 553,648,128-bit Nand E2PROM.
Power supply voltage of 2.7 to 3.3 Volt
Access time: 65ns flash and 70ns pSRAM
Operating temperature: -30°C to +85°C (wireless)
Both top and bottom boot blocks in one device.

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Display 1.8” 176*220 65K TFT LCM
Specifications:
ITEM STANDARD VALUE DOTS
RESOLUTION 176(RGB)*220 mm
MODULE DIMENSION 34*46.7*2.8 mm
EFFECTIVE-DISPLAY AREA 28.512*35.64 mm
DOT PITCH 56.5*169.5(µm) µm
APPROX. WEIGHT TBD g
LCD TYPE 65K colors TFT
POWER SUPPLY 2.4~3.3V
VIEWING DIRECTION 3 O’clock
BACK LIGHT LED*3
DRIVER IC Himax 8309
.
1.3M CMOS
Sensor
Impac M5118 1/4” 1.3M CMOS Module
＊Characteristics
‧High sensitivity in low condition
‧Portable and workable in low voltage

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‧Standard Serial Camera Control Bus (SCCB)Interface
‧Support SXGA, VGA, QVGA, QQVGA, CIF, QCIF, QQCIF,和windowed outputs with Raw
RGB, RGB (GRB 4:2:2), YUV ( 4:2:2)和YCbCr (4:2:2) format
‧VarioPixelTM method for sub-sampling formats (VGA, QVGA, QQVGA, CIF, QCIF, and
QQCIF)
‧Auto Image control, included: Auto Exposure Control (AEC), Auto Gain Control (AGC), Auto White Balance
(AWB), Auto Band Filter (ABF),and Auto Black Level Compensation
(ABLC)
‧Image quality control, included: color saturation, hue, gamma, sharpness (edge enhancement), lens
correction, white pixel canceling, and noise canceling
Back Light The backlight on the module is single light guide. SW adjusts the ON/OFF duty cycle of on-chip PWM generator.
Keypad The keypad is a matrix. The columns, KEYCOL(6:0) are connect to the keyboard interface of MT6219, and are
usually driven low. The rows, KEYROW(5:0) are connected to the keyboard interface of MT6219 and are internal
pulled-up. When a key is pressed, the appropriate row is connected to one of the columns, and forced low, then
causing an interrupt.
Attach Pluto keypad matrix comparison table.
KCOL0 KCOL1 KCOL2 KCOL3 KCOL6
KROW0 SEND VOL_UP Camera VOL_DOWN
KROW1 UP SOFT_L SOFT_R
KROW2 DOWN 1 2 3
KROW3 LEFT 4 5 6
KROW4 RIGHT 7 8 9
KROW5 CENTER * 0 #
KROW6
PWRKEY
Power
key
.
Vibrator Part number：LG MVML-4080M4
Rated voltage：DC 3V
Rated current：110mA (Max)
Terminal resistance：30 ohm +- 20%
Rated speed：9500 rpm (normal)
Mechanical noise：50dB Max
Operation temperature：-20°C ~ 60°C
Storage temperature：-40°C ~ 80°C
I/O connector 18pin connector

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Adaptor The specification defines the input, output, performance characteristics, environment,
noise and safety requirements for a 2.915 watts switching type power adapter.
The adapter input/output are full range AC input and +5.3V DC with 2.915 watts
maximum output.
INPUT CHARACTERISTICS
●Input Voltage and Frequency
The power supply shall meet all specifications when powered from the following Sources.
Item Minimum Nominal Maximum
Voltage 90V 100/240V 264V
Frequency 47Hz 50/60Hz 63Hz
●Efficiency
The power supply efficiency shall be greater than 55 % when measure at full rated load, nominal input voltage.
●Input Current
The AC mains steady state RMS input current shall be 0.2 Amps maximum at rated input, full load condition.
●Inrush Current
The AC mains single-cycle peak inrush current shall be limited to 30 amps cold and coinciding with the AC
mains voltage 264Vac. The power supply shall cause no damage with the hot start inrush under 40 degree C
ambient temperature.
●Leakage Current Requirement
The power supply ground leakage current, when measured per the test configuration, shall not exceed 0.25mA at
input voltage of 264Vac/50Hz for Class II.
●Over-Voltage Requirement (input)
The supply will operate safely up to 240Vac. the SMP must not fail in catastrophic manner (i.e. no fire, Flames,
sparks, melting)
OUTPUT CHARACTERISTICS
●Output Voltage
The power supply shall be regulated DC output of 5.3Vdc±5%, the voltage shall be measured at the power
supply output connector.
●Output Current
Output Current (Iout): 500-700mA

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●Temperature
Operating: -0 to 40 degrees C.
Non-operating: -20 to 60 degrees C.
●Humidity
20~ 85% relative humidity, non-condensing during operating temperature. 5~ 95% relative humidity, including
condensation during non-operating temperature.
●Transient Response
The voltage regulation limits shall be maintained over the AC input range. The power supply shall maintain
output voltage regulation subject to the conditions listed. The transient response measurement shall be made with
a load changing repetition rate of 100 Hz. The load slew rate shall not be greater than 0.1 A/us. During transient
steps, the regulation must be maintained within the limits of figure.
Battery
Packing
Battery cell: NEC Li-Ion 700mAh
NEC cell + PCM
Description Specification Unit Condition
Cell model NEC ICP043443AL
Nominal Capacity 700 mAh
Nominal Voltage 3.7 V
Charge voltage 4.2 V
Final discharge voltage 2.75 V
Maximum Charge Current 700 mA 1C
M
a
xim
u
m Di
sc
h
a
r
ge
Cu
rr
e
n
t
14
0
0
mA 2
C

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Operating Temperature
Range
0~+45
-20~+60 ℃
Charge
Discharge
Storage Temperature Range -20~+60 ℃Within 6 months;
Capacity recovery rate 85%