VOXTEL VS600 Service Manual

VS600 Service Manual

Model: VS600
Service Level: Level 1 ~Level 4

VOXTEL Technical Documentation 1

VS600 Service Manual

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 VS600 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 24

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 26

4.7 POWER MANAGEMENT & CHARGING CIRCUIT 26

4.8 LCM FPC & LCM BACKLIGHT 27

4.9 BOARD TO BOARD CONNECTOR 28

4.10 HEADSET 29

4.11 BLUETOOTH & CHIP ANTENNA 29

4.12 HALL SENSOR CIRCUIT 30

4.13 MINI USB & MINI SD 31

4.14 UB & MB KEYPADS 31

4.15 MT6219 32

4.16 ANTENNA & SWITCH 33

4.17 AMPLIFIER (SKY77328) 34

4.18 MT6129 & SAW FILTERS 34

5 SOFTWARE DOWNLOAD 36

5.1 SYSTEM REQUIREMENTS 36

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5.2 VOXTEL USB2COM DOWNLOAD CABLE 36

5.3 INSTALLATION OF VOXTEL DOWNLOAD TOOL 37

5.4 HOW TO DOWNLOAD SOFTWARE? 38

6 DISASSEMBLY/ASSEMBLY PROCEDURE 41

6.1 INTRODUCTION 41

6.2 RECOMMENDED TOOLS 41

6.3 DISASSEMBLY PROCEDURE 42

6.4 ASSEMBLY PROCEDURE 51

6.5 EXPLODED VIEW 51

7 TROUBLESHOOTING 52

7.1 LEVEL 1 & 2 TROUBLESHOOTING CHART 52

7.2 MANUAL MMI TEST MODE 55

7.3 LEVEL 3 & 4 TROUBLESHOOTING-BASEBAND 57

7.3.1 BASEBAND SUBSYSTEM 57

7.3.2 KEY COMPONENTS PLACEMENT 58

MAIN BOARD ASSEMBLY-BOTTOM 58
　 MAIN BOARD ASSEMBLY-TOP 59
　 UPPER BOARD ASSEMBLY-BOTTOM 60
　 UPPER BOARD ASSEMBLY-TOP 60
　 BLOCK DIAGRAM 61

7.3.3 BASEBAND SUBSYSTEM CIRCUIT SCHEMATICS 61

7.4 LEVEL 3 & 4 TROUBLESHOOTING-RF 62

7.4.1 RF SUBSYSTEM 62

7.4.2 KEY COMPONENTS PLACEMENT 63

　 F

RONT-END & TRANSCEIVER 63

BLUETOOTH 64
　 BLOCK DIAGRAM 65

7.4.3 RF S

UBSYSTEM CIRCUIT SCHEMATICS 65

7.5 LEVEL 4 SERVICE GUIDELINE FOR RF SUBSYSTEM 66

7.5.1 RECEIVER PAT H 66

7.5.2 TRANSMITTER PAT H 71

7.5.3 AUTOCAL META TOOL 75

7.5.4 BLUETOOTH SUBSYSTEM 76

8 APPENDIX 78

　 E

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XPLODED VIEW & PCB ASSEMBLY PLACEMENT 78

A

A

1 Introduction

This document elaborates the functions and details of Voxtel VS600, a tri-band

VS600 Service Manual

GSM900/DCS1800/PCS1900

GSM feature phone with GPRS class-10 function, as we ll

as the information related to maintenance procedure and trouble-shootings.

1.1 Overview

VS600 is a MP3 feature phone with slide form factor . It equips with 1.8” 176x220 65k
TFT LCD display and a 1.3M pixels CMOS camera. Besides the excellent quality of
display, VS600 also features its acoustic performance: 64-polyphonic and MP3 ring
tones.

1.2 Specifications

Basic Features

Dimension (Excluding Antenna) 90x45x24
Weight (Flex & Volume) <85 g
Volume <82 cc

ntenna Embedded
Talk Time / Stand by time 2.5-5 hrs/140-200 hrs
Charging time Switching type (finish charging in 2.5 hours)
Main Display Type / Resolution / Color
Depth
Main Backlight Color / Type White light
Keypad Backlight Color / Type White light

TFT/1.8" 176*220/65K Color

Major Chipsets

Digital Base-band Chip MT6219

nalog Base-band Chip MT6219
Power Amplifier MT6318
Transceiver MT6129
Liquid Crystal Display Waxin
Memory Configuration (min.) 128 + 64
Backend IC No (ISP inside)
Camera CMOS Asia Optical
Battery NEC Cell
Bluetooth CSR

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A

A

I/O

I/O Connector Yes
External RF Connector Yes

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

ppearance Semi-Auto Slider
Navigation Key 5 ways 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

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overheard by the use of a suitable radio receiver. GSM offers vastly improved
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

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channels used by cell A). In this system, subscribers in cell A and subscribers in cell D
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 hi gh 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 TDMA frame.

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 it self carries out signal strength measurement s 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

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base station to another in the new cell.

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 VS600 Hardware Specifications

3.1 RF Subsystem

VS600 supports 900/1800/1900 bands as well as GPRS function. It supports GPRS
class 10, i.e. the maximum uplink slot number is 2; 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/E GSM/DCS/PCS quad-band de sign

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

VS600 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 servi ce, it support s 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.

FLASH

SRAM

PSRAM

DEBUGGER

MELODY

LCD

CMOS

SENSOR

NAND

FLASH

LCD

JTAG

SPEECH/AUDI
O
INPUT

SPEECH/AUDI
O
OUTPUT

FM STEREO
RADIO INPUT

HIFI
STEREO
OUTPUT

ALERT
ER

PWM

SIM

EXTERNAL MEMORY

INTERFACE

IMAGE INPUT

MT6219

SERIAL

LCD

SERIAL

LCD

UART

USB

MMC/SD/MS

IRDA

Base-band block diagram

MSPRO

8-BIT PARALLEL

INTERFACE

SYSCLK

AFC

APC
TX I/Q
RX I/Q

AUXADC

SUPPLY

VOLTAGES

KEYPAD

1 2 3
4 5 6
7 8 9

0 #

*

TCVCXO

RF

MODULE

BPI
BSI

POWER

MANAGEMENT

CIRCUITRY

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A

 Component and Function List

Product Segment Color basic feature phone
Product Description Case changeable mini phone
Memory configuration SPANSION 128Mb+64Mb (MCP)
Baseband Chip MT6219
Power Management IC MT6305
Power Amplifier SKY77328
Transceiver MT6129
LCM AUO 1.8” 176*220 65K TFT

1.3M CMOS Camera

SIA 1.3M Micron CMOS

sensor

Battery + Packing Cell: NEC (Lithium Ion)

Packing vendor: Tyco
Major Features List VS600
Supported Bands 900/1800/1900 MHz Tri-band
GPRS Class Class 12
Circuit Switch Data
Supported Voice Codec AMR/EFR/ FR/HR
Main LCD Display 1.8” 176(R, G, B)*220 65K TFT
Antenna Type
Charger Type Switch
Loud speaker-hands free Yes

CSD up to 9.6 kbps

Embedded

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

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JPEG Yes
Bluetooth CSR Bluetooth 1.1
USB Connection USB 1.1 Slave
UV light Yes
PC Tools Download/ Modem driver
Wallpapers Yes
Melody Composer Yes
ME Address book 250
Caller Photo Display Yes
Caller Groups Y es
Calendar/Note/Appointment Yes
Alarm Clock Yes
Calculator Yes

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A

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

MR 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

MT6305

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

The MT6305 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

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Microphone

Loud Speaker

VS600 Service Manual

control. The SIM interface provides the level shift between SIM card and
microprocessor.

● Power Management Section

Voltage regulator

Battery charger

Battery production

MARQUESS MM-OB622S-42C33C10

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： φ 6.0 * 2.2 mm
Directional characteristic： omni-directional

Operating voltage： DC 2V

Part number： Speaker-Receiver dual type MT-2014ESF
Impedance： 8 ± 1.2 at 1KHz, 1Vrms.

SPL for Dynamic Speaker: 100 ± 3 dB at 0.5W 1KHz.

Stacked-MCP

Architecture

(128Mbit Flash +

64Mbit PSRAM)

SPL for Dynamic Receiver: 123dB ± 3dB at 1.0KHz, 100mV with IEC R318 coupler.

Resonance Frequency (Fo)： 800Hz ± 160 Hz, 1V

Rated Input (Nom./Max.) for Speaker： 0.5 W/ 0.8W
Frequency Range：Fo ~ 20 kHz. (Receiver: 300Hz~3.4kHz)
Dimension： 20 × 14 × T4.6 [mm]

Spansion S71PL129JC0

Stacked Multi-Chip Product (MCP) Flash Memory and pSRAM

128 Megabit (8M x 16-bit) CMOS 3.0 voltage-only simultaneous operation, page mode flash memory
with 64 Megabit (4M x 16-bit) pseudo-static RAM.

Power supply voltage of 2.7 to 3.1 Volt

Access time: 65ns flash and 70ns pSRAM

Operating temperature: -25°C to +85°C (wireless)

-40°C to +85°C (Industrial)

Both top and bottom boot blocks in one device.

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Bank structure

MCP block diagram

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Display

VS600 Service Manual

Jemitek 1.8” 176*220 65K TFT LCM

Specifications:

ITEM STANDARD VALUE UNIT

Number of Pixels 176 x (R, G, B) × 220 dots

1.3M CMOS

Sensor

Outline Dimension

34 (W) × 46.7 (H) × 3.0

mm

(T)

Active Area

Pixel Pitch

27.984 (W) × 34.98 (H)

0.159 (W) × 0.159 (H)

mm

mm

Weight g

LCD type TFT (Transmissive)

Viewing Direction 12 O’clock

Backlight White LED

Driver IC Samsung S6D0118

.

ASIA Optical BASCH0300

The BASCH0300 is mobile phone camera module with Micron 1/3” SXGA CMOS
sensor. It is 1.3M fixed focus camera module for mobile phone and includes 3 plastic
Lens.

Features

The BASCH0300 features a state-of-the-art architecture, allowing extremely low

Back Light

Keypad

power consumption and miniature size. The following are the product highlights.

Sensor Array

●1/3" optical format

●SXGA resolution 1280x1024

●3.6µm x 3.6µm square pixels

●Integrated 10 Bit ADC

●RGB mosaic with micro-lens for high sensitivity

●Programmable frame rate up to 15 fps SXGA and 30 fps QSXGA

The backlight on the module is single light guide. SW adjusts the brightness by changing the ON/OFF
duty cycle of on-chip PWM generator.

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.

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Attach VS600 keypad matrix comparison table.

KCOL6

GND [Power/ End key]

KCOL0 KCOL1 KCOL2 KCOL3 KCOL4

KROW0 [Send] [Vol_Up] X [Vol_Down] X

KROW1 [Up] [Soft L] X [Soft R] X

KROW2 [Down] [1] [2] [3] X

KROW3 [Left] [4] [5] [6] X

KROW4 [Right] [7] [8] [9] X

KROW5 [Mid] [*] [0] [#] X

.

Vibrator

I/O connector

Adaptor

Part number： JA HWA
Rated voltage： 3 VDC
Rated current： Max. 80mA
Terminal resistance： 35 ohm +- 15%
Rated speed： 13000 +- 3000 rpm
Mechanical noise： Less than 50dB
Operation temperature： -30°C ~ 70°C
Storage temperature： -40°C ~ 85°C

Mini-USB connector

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.

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●Input Current

The AC mains steady state RMS input current shall be 0.3 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 5.25Vdc±5%, the voltage shall

be measured at the power supply output connector.

●Output Current

Output Current (Iout): Continuous operation: 480mA

●Temperature

Operating: -0 to 45 degrees C.

Non-operating: -10 to 70 degrees C.

●Humidity

10~ 90% 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

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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

Nominal Capacity 700 mAh

Nominal Voltage 3.7 V

Charge voltage 4.2 V

Final discharge voltage 2.75 V

ICP043443AL

Maximum Charge Current 700 mA 1C

Maximum Discharge Current 1400 mA 2C

Internal Resistance <145 m

Operating Temperature

Range

0~+45

-20~+60

Storage Temperature Range -20~+60

℃

℃

Charge

Discharge

Within 6 months;

Capacity recovery rate 85%

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3.4 Acoustic Specifications

GSM 11.10 – 30.1 Sending sensitivity/frequency response

GSM 11.10 – 30.2 Sending loudness rating (SLR)

GSM 11.10 – 30.3 Receiving sensitivity/frequency response

GSM 11.10 – 30.4 Receiving loudness rating (RLR)

GSM 11.10 – 30.5.1 Side Tone Masking Rating (STMR)

GSM 11.10 – 30.6.2 Telephone acoustic coupling loss – Stability margin

GSM 11.10 – 30.7.1 Distortion-Sending

3.5 CE marking

Safety：EN60950

EMC：ETS300 342-1

EN55022 EMI： ITE-Radio Disturbance Characteristic

EN61000-4-3 RS ： Radiate, Radio-Frequency, and Electromagnetic Field

Immunity Test

EN61000-4-2 ESD：Electrostatic Discharge Immunity Test

EN61000-4-4 EFT：Electrical Fast Transient/Burst Immunity Test

EN61000-4-6 CS：Immunity to Conducted Disturbances

ISO7637-1/-2 Transient and Surge, Vehicular Environment

EN61000-4-11 Voltage Dip, short Interruptions and voltage Variations Immunity
Test

EN61000-4-5 Surge：Surge Immunity Test

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3.6 Related Performance

Operating Range

Battery mode

Charging mode

Power consumption

Talk mode

Sleep mode

GPRS mode, 1 TX

slot

Power On： 3.4V < Vbat < 4.3V
Power Off： Hardware: Vbat < 3.2V, Software: Vbat < 3.4V

Low Battery Alert： Vbat = 3.4V

Maximum Charge Current： 500mA
Maximum Charge Voltage： 5.5V

Maximum Charge Time： less than 3 Hours

Maximum Current： (320mA) @ GSM band, PO = 32dBm

Maximum Current： (250mA) @ DCS band, PO = 29dBm

Maximum Current： (6mA) @ paging rate = 2

Maximum Current： (3.5mA) @ paging rate = 9

Maximum Current： (320mA) @ GSM band, PO = 32dBm
Maximum Current： (250mA) @ DCS band, PO = 29dBm

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4 Circuit Schematics

4.1 Memory Circuit

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4.2 SIM Card Circuit

4.3 Speaker & Receiver 2-in-1 circuit

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4.4 Microphone

VS600 Service Manual

4.5 LCM Backlight and LED Circuit

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4.6 Vibrator Circuit

4.7 Power Management & Charging Circuit

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4.8 LCM FPC & LCM Backlight

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4.9 Board to Board Connector

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4.10 Headset

4.11 Bluetooth & Chip Antenna

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4.12 Hall Sensor circuit

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4.13 Mini USB & Mini SD

4.14 UB & MB Keypads

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4.15 MT6219

VS600 Service Manual

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4.16 Antenna & Switch

VOXTEL Technical Documentation 33

VS600 Service Manual

4.17 Amplifier (SKY77328)

4.18 MT6129 & SAW Filters

VOXTEL Technical Documentation 34

VS600 Service Manual

VOXTEL Technical Documentation 35

VS600 Service Manual

5 Software Download

5.1 System Requirements

 Operation system: WinXP / WinNT / Win2000.

 CPU: Pentium3 1 GHz or higher.

 Hard Disk: Free 100MB space.

 Memory: 256MB RAM.

 Input Device: Keyboard and mouse

 Cable: RS232 Cable (Voxtel cable)

5.2 Voxtel USB2COM Download cable

1 Please don’t insert the US B cable into your computer before the installation of the driver.

2 There will be a directory “(US-001) USB To Serial Cable V1.1” in the provided CD. Please

run the installation program: “Driver Installer.exe” in the “98~xp” directory if your OS is
windows 98~xp. We don’t support other OS now.

3 After install the driver of this USB2COM cable. The program will ask you to restart the

computer.

4 After re-start the computer and the setup procedure, please insert the USB2COM cable

and there will be a new COM port in your system.

5 Please remember the COM port number in “Device Manager”. You would need this value

to configure your DL tool.

VOXTEL Technical Documentation 36

VS600 Service Manual

r

r

5.3 Installation of Voxtel Download Tool

Voxtel download tool is for communication between PC and VS600. It’s for loading
software into VS600. You can download it from Voxtel. The installation procedure is
simply to put all files under same folder.

Put all files under

same folder.

Logo

Double click the executive file to activate the tool. Then you will see the GUI popped
up as followed picture:

Main Menu Ba

File Information

Progress Bar

Status Ba

VOXTEL Technical Documentation 37

VS600 Service Manual

5.4 How to Download Software?

 Before you begin using the tool, you must set your COM port and Baud Rage first. The

tool will show the available COM port in the PORT, Baud Rate, like following figures.

VOXTEL Technical Documentation 38

VS600 Service Manual

 Please power off VS600 first. Then connect the Voxtel download cable to the handset.

After connecting the PC and device, we have to select the correct data files. You can
download data files from Voxtel. Remembe

 Next you need to click “FlieOpenLinkMap” on the GUI. After selecting the

scatCASTOR.txt, the tool will parse the contents of the file including the segment and

Address. Right after that, click the “Download” button to get the data transferrin g process

r to put all data in same folder.

Put all data files

in same folder

ready.

Click Here

VOXTEL Technical Documentation 39

VS600 Service Manual

VS600 Service Manual

 After clicking the “download” button on the GUI, you need to activate the downloading

process by pressing the END KEY. It would take several minutes to complete whole
process.

END KEY

Current Status

Download Completes!

VOXTEL Technical Documentation 40

VOXTEL Technical Documentation 40

VS600 Service Manual

6 Disassembly/Assembly Procedure

6.1

Introduction

Care should be taken while processing the disassembly and reassembly of VS600 in
order to prevent from damaging the housing and internal components. The
board-to-board and display FPC (Flexible Printed Circuit cable) are vulnerable and
couldn’t bear too stress. Ensure that a properly grounded high impedance conductive
wrist strap is used while performing these procedures on electronic units.

NOTE: Many of the integrated circuit devices used in this equipment are
vulnerable to damage from static char re that adequate static
protection is in place when handling, shipping, and servicing the internal
components of this equipment.

ges. Ensu

6.2 Recommended Tools

 Anti-St atic Mat (Ground Cord included)

 Anti-Static Wrist Strap

 Torque Screw Driver (T5 type, torque is set to 1.2kg-cm)

 Screw Driver (Plus)

 Tweezers

 Disassembly bladed tool

VOXTEL Technical Documentation 41

VS600 Service Manual

6.3 Disassembly Procedure

The follo grams will demonstrate the correct sequence and action to

ssembly cture shows the major parts of VS600.

disa VS600. The first pi

wing set of dia

2 3

1

5

4

6

7

9

8

Item Description

1

2

3

4

5

6

7

8

9

Case 1 and lens

Case 2 and slide hinge

Case 3

Case 4 and antenna assembly

Battery cover & screws

Main board assembly

Upper borad assembly and LCD module

Keypad

FPC and side key

VOXTEL Technical Documentation 42

 Step1

 Step2

VS600 Service Manual

Power off VS600 and put it on a flat workbench.

Remove the batter door. Take out the battery, SIM card and memory card if . any

 Step3

Unscrew all screws on Case 4.

VOXTEL Technical Documentation 43

VS600 Service Manual

 Step4

U ce the main lens to the left. Fit the

se a blade to separate Case3 and Case4. First fa
blade into the locking on the side and push outward. Next, insert the blade into the
cleavage and stress along the side counterclockwise. When you encounter the locking
on the other side, push outward to disassemble the Case4 from Case3.

VOXTEL Technical Documentation 44

 Step5

VS600 Service Manual

Insert the blade to the right side of DSC shielding case and pry it to separate.

 Step6

Pry the main PCBA. Be careful with the Board-to-board FPC.

VOXTEL Technical Documentation 45

VS600 Service Manual

 Step7

ke out the side-key and number keypad. Ta

VOXTEL Technical Documentation 46

 Step8

VS600 Service Manual

First, unscrew the screws fasten on Case3. Next, align the Case3 with the
alignment line. Push Case2 and Case3 to opposite directions; next, lift Case 3 to
separate it from Case 3.

VOXTEL Technical Documentation 47

 Step9

VS600 Service Manual

Remove screws fasten on Case2. Next, use blade to unlock all lockings to separate
Case1 and Case2.

VOXTEL Technical Documentation 48

 Step10

Remove the upper PCBA and unscrew all screws fasten on the hinge. Remember

VS600 Service Manual

to take out the magn

et.

VOXTEL Technical Documentation 49



VS600 Service Manual

Step11

Unleash the board-to-board and LCM FPC.

 Step12

Release LCM frame by unhook the snap fixings along the side.

VOXTEL Technical Documentation 50

VS600 Service Manual

VS600 Service Manual

6.4 Assembly Procedure

Once the handset is disassembled he repair is carried out, the unit must then be

reassembled. It is carried out in the exact reverse sequence as the disassembly.

6.5 Ex

ploded View

E

xploded View is listed in appendix.

and t

VOXTEL Technical Documentation 51

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VS600 Service Manual

7 Troubleshooting

7.1 Level 1 & 2 Troubleshooting Chart

SYMTPOM PROBABLE CAUSE VERIFICATION AND REMEDY

a.)
Battery either
discharged or
defective

b.)
Battery terminals
open or
misaligned.

1.Handset will not turn on or
stay on

Measure battery voltage across a
50ohm load. If the battery voltage is
<3.25 V
the appropriate battery charger. If
the battery will not recharge, replace
the battery. If battery is not at fault,
proceed to b.

Visually inspect the battery terminals
on bother the battery and the
handset. Realign and, if necessary,
either replace the battery or refer to
a Level 3 Service Facility for battery
connector replacement. If battery
terminals are not at fault, proceed to
c.

, recharge the battery using

dc

2. Han
receptio
such as frequently dropping
calls or storted audio.

3. Display is erratic, or
provides partial or no
display.

dset exhibits poor

n or erratic operation

di

c.)
Main boa
assemb
defective.

a.)
Antenna defective

b.)
Main board
assembly
defective

a.)
Mating
connections to or
from main board
faulty.

b.)
LCD module
defective

rd

ly

Remove the main board assembly.
Substitute a known good PCB
assembly and temporarily
reassemble the handset. Depress
the PWR button; if handset turns on
and stays on, disconnect the DC
power source and reassemble the
handset with a new main board
assembly. If the unit still cannot turn
on, after reassembled with a new
main board, try to replace a kn
good FPC (flexible printed circuit).

Check connection between the
antenna and the main board
assembly. If the connection is okay,
substitute a known good antenna. If
the fault is still present, proceed to b.

Replace the main board assembly
(refer to 1c). Verify that the fault has
been cleared and reassemble the
unit with the new PCB assembly.

Check general condition of FPC and
FPC connector. If the FPC and
connector are good, check that the
LCD module

Substitute a known good LCD
module. Verify that the fault has
been cleared. Next reassemble the
handset.

own

VOXTEL Technical Documentation 52

VS600 Service Manual

SYMTPOM PROBABLE CAUSE VERIFICATION AND REMEDY

a.)
2-in-1loudspeaker
defective

4. Incoming call alert audio
distorted is too

or volume

low. b.)

Upper board
assem
defective

a.)
Microphone

5. Handset transmit audio is

defective

weak. (usually indicated by
called parties complaining of

b.)

difficulty in hearing voice.)

Main board
assembly
defective

a.)
Connections to or
from main board
assembly
defec

bly

tive

Subs

titute a known good

loudspe

aker. If the fault is still

present, proceed to b.

eplace a known good upper b

R oard
assembly. Verify that the fault has
been cleared and reassemble the
handset with the new upper board
assembly.

Replace the microphone as
described in

the disassembly
procedure. If fault is not cleared,
proceed to b.

Replace a known good main board
assembly. Verify that the fault has
been cleared and reassemble the
handset with the new main board

embly.

ass

Check connection from the earpiece
to the main board assembly. If the
connector is not fault, proceed to b.

6. Received audio from

receiver is weak or distorted.

7. Handset will not
recognize or accept SIM
card.

b.)
2-in-1
loudspeaker
defective

c.)
Main

board
assembly
defective

a.)
SIM card
defective

b.)
Main boa
asse

rd

mbly

defective

Temporarily replace the speaker
assembly with a known good one.
Ensure good connection by placing
a call and verify the improvement in
earpiece audio. If fault is cleared,
reassemble the handset with the
good assembly. If not, proceed to c.

Replace a known good main board
assembly. Verify that the fault has
been cleared and reassemble the
handset with the new main board
assembly.

Check the SIM card contacts for dirt.
Clean if necessary, and check if fault
has been cleared. If the contacts are
clean, insert a known good one into
the handset. Turn on the handset
and verify that the SIM card has
been accepted. If fault is still
present, proceed to b.

Replace a known good main board
assembly. Veri

fy that the fault has
been cleared and reassemble the
handset with the new main board
assembly.

VOXTEL Technical Documentation 53

VS600 Service Manual

SYMTPOM PROBABLE CAUSE VERIFICATION AND REMEDY

8. Vibrator feature not
functioning.

9. Internal charger not

working

10. No or weak audio when
using headset

a.)
Vibrator defective

b.)
Upper board
assembly
defective

Faulty charge
circuit on mai
board asse

r

n

mbly

a.)
Headset plug
pushed full

not

y

home.
b.)

Faulty jack on
main board
assembly.

Replace vibrator as described in the
disassembly procedure. If the fault is
still present, proceed to b

.

Replace a known good upper board
assembly. Verify that the fault has
been cleared and reassemble the
handset with the new upper board
assembly.

Insert a selection of batteries to
verify. If the fault is still present,
replace a known good main board
assembly. Verify that the fault has
been cleared
handset with the new m

and reassemble the

ain board

assembly.

Ensure the headset plug is fully
seated in the jack.

Replace a known good main board
assembly. Verify that the fault has
been cleared and reassemble the
handset with the new main board
assembly.

VOXTEL Technical Documentation 54

VS600 Service Manual

7.2 MMI T

Manual est Mode

VS600 provides a FA C Y Mode to p erform t
it’s not necessary to inst ore y
screen, press
test item

 Keypad

In keypad mode, you have to complete the
When you press one key,

all characters disapp k to fa

After

***504# to

s:

TOR manual MMI test mode. Be noted tha

proceeding the test. Under stand-ball a SIM card bef

enter FACTOR Y MODE. In factory mode, you will see several

test by pressing all keys and buttons.

the corre char

ear, it will go bac

sponding

acters on the display should disappear.
ctory mode menu.

 Echo Loop & Headset

In echo loop mode, it’s for testing the performance of microphone and receiver
(VS600’s loudspeaker is a 2-in-1 sp eaker). After entering echo loop mode, please give a
puff toward the microphone. Check if there is any sound coming out of receiver.

In headset mode, it’s for testing the performance of headset’s earpiece and
microphone. After entering the headset mode, please give a puff toward headset’s
microphone. Check if there is any sound coming out of earpiece.

VOXTEL Technical Documentation 55

VS600 Service Manual

 DSC

In DSC mode, you can test the functions of the camera. Af ter entering the DSC mode,
please make some photos to check if the DSC is working fine.

 RTC

Real Time Clock helps to keep the handset internal clock ticking, even it’s turned off.
RTC mode is for testing its function. After entering the RTC mode, the handset will
instantly power off. In few seconds, the handset will prompt a message “Pow ?”
Please press left soft-key to turn on the handset. If it can power on again without
problem, the RTC is wo

rking fine.

er On

VOXTEL Technical Documentation 56

7.3 Le

VS600 Service Manual

vel 3 & 4 Troubleshooting-Baseband

7.3.1

Baseband Subsystem

VS600 employs MTK ARM7EJ-S 32bit RSIC GSM/GPRS Baseband chipset as

platform. The key component s u sed in baseband subsystem is listed below:

 MTK ARM7EJ-S 32bit RSIC GSM/GPRS Baseband chipset including MT6219 and

MT6305.

 Microprocessor: MT6219 includes ABB (analog baseband) and DBB (digital

baseband). It supports EGSM/DCS/PCS.

 Power management IC: MT6305

 Memory IC

 MCP (Multi Chip Package): Spansion S71PL129 JB0 128Mb+32Mb pSRAM

 NAND Flash: Samsung 512Mb(64MB)

RTC (R

 eal Time Clock)

Coin Battery: Seiko XH414H



Volt age Reg u lator



pMOSFET: Vishay Si7705DN



 Digital Camera Module

 CMOS: Asia Optical BASCH0300 1.3Mega Pixels

 LCD Module

 TFT LCD: Jemitek J180Q3-01 176 x 220

VOXTEL Technical Documentation 57

VS600 Service Manual

7.3.2 Key Components Placement

 Main Board Assembly-Bottom



S

ubsystem

○

RF

1

3

○

2

○

Item Description

1 CMOS connector (CN603)

2 Phone Jack (J501)

3. SIM card connector (J500)

4 Mini-SD card Connector (CN602)

5 Mini-SD card Connector (CN602)

6 Mini-USB connector (CN601)

7 Microphone (MIC501)

5

○

4

○

6

○

7

○

Blue-

tooth

VOXTEL Technical Documentation 58



Main Board Assembly-Top

1

○

5

3

○

○

2

○

○

VS600 Service Manual

Item Description

1 MCP 128+32 Mb (U401)

2 NAND Flash 64MB (U700)

3. MT6219 (U400)

4

4 Power Management IC (U500)

Blue­tooth

9

○

8

○

7

○

6

○

5 RTC (X400)

6 P-MOSFET (U501)

7 Coin battery (BAT510)

8 B-to-B connector (CN701)

9 White LED (D510~D515)

VOXTEL Technical Documentation 59

VS600 Service Manual

 Upper Board Assembly-Bott

1

○

om

Item Desc

1 Vibrator connector (J803)

ription

2

3

○

 oard Assembly-Top

Upper B

○

1

○

2 LCD module connector (J802)

3. B-to-B ) connector (J801

Item Description

2-in-1 loudspeaker connector

1

(LSP801)

VOXTEL Technical Documentation 60

VS600 Service Manual

 Block Diagram

DEBUGGER

FLASH

SRAM

PSRAM

JTAG

SPEECH/AUDI
O
INPUT

SPEECH/AUDI
O
OUTPUT

FM STEREO
RADIO INPUT

HIFI
STEREO
OUTPUT

ALERT
ER

PWM

SIM

MELODY

LCD

EXTERNAL MEMORY

INTERFACE

MT6219

SERIAL

LCD

SERIAL

LCD

USB

CMOS

SENSOR

IMAGE INPUT

IRDA

MMC/SD/MS

MSPRO

UART

NAND

FLASH

8-BIT PARALLEL

INTERFACE

SYSCLK

AUXADC

SUPPLY

VOLTAGES

KEYPAD

1 2 3
4 5 6
7 8 9

*

LCD

AFC

APC
TX I/Q
RX I/Q

BPI
BSI

0 #

TCVCXO

RF

MODULE

POWER

MANAGEMENT

CIRCUITRY

7.3.3 Baseband Subsystem Circuit Sch

lease refer to Chapter 4.

P

ematics

VOXTEL Technical Documentation 61

VS600 Service Manual

7.4 Level 3 & 4 T

roubleshooting-RF

7.4.1 RF Subsystem

VS600 employs a transceiver, a power amplifier, an antenna switch, a series of SAW
filters (3 pcs) and a 26MHz VC-TCXO. It also has a Bluetooth IC, a chip antenna,
BALUN filter and a reference clock for Bluetooth IC.

 Transceiver IC: MT6129 (MTK), which is GSM850/EGSM/DCS/PCS quad-band design

with GPRS class-12 capability.

 Power amplifier: SKY77328 (SKYWORKS), which is capable of supporting GPRS

class12 and quad-band application.

 Antenna switch: C085TK (Hitachi metals), which is as the duplexer between transmission

/ reception route for EGSM/DCS/PCS bands.

 Saw filter: FUJITSU-B28E 942.5MHZ (GSM900); FUJITSU-B2BG 1842.5MHZ

(GSM1800); FUJITSU-B2BE 1960MHZ (GSM1900).

 RF clock reference: 26MHz VC-TCXO, which is the fundamental reference frequency for

transceiver PLL synthesizer and the fundamental frequency of base band chipset after
being divided by two.

 Bluetooth IC: CSR -BC313143A - Bluetooth V1.1 and V1.2 compliant.

 freq. is 2450MHz.

BALUN filter: MURATA - LFB212G band-pass filter, whose operation

 Reference clock for Bluetooth: TXC -7M26000056 XTAL 26.0MHZ.

 Chip antenna: ACX -AT3216 CHIP ANTENNA 2400MHz

VOXTEL Technical Documentation 62

VS600 Service Manual

7.4.2 Key Components Placement

 Fron end & Transceive

t- r

5

○

6

○

2

1

○

4

○

3

○

○

Description

Item

1 SAW filter (U103 ~U105)

2 Power Amplifier (U101)

3 Tra nsceiver (U201)

4 VC-TCXO (U202)

5 Car kit connector (J102)

Blue-

tooth

6 Antenna Switch (U102)

VOXTEL Technical Documentation 63



Bluetooth

VS600 Service Manual

1

○

3

○

2

○

Item Description

1 CSR BT IC (U301)

2 XTAL (Y301)

3 BALUN filter (U304)

4 Car kit connector (U3 02)

5 Chip antenna (U303)

4

○

5

○

VOXTEL Technical Documentation 64

VS600 Service Manual

ram  Block Diag

1 GSM/GPRS Transceiver

○

2 Bluetooth

○

7.4.3 RF Subsystem Circuit Schematics

Please refer to Chapter 4.

VOXTEL Technical Documentation 65

7.5 Level 4 Serv

VS600 Service Manual

ice Guideline For RF Subsystem

In the following sessio
RECEIVER PATH, TRANSMITTER PATH and BLUETOOTH. The required test
equipments are oscilloscope, DC source, RF signal generato r an d spectrum analyzer.

ns, the guideline will be described in 3 different parts:

7.5.1 Receiver Path

When the VS600 receives signals from antenna, the RF signals will first encounter
the antenna switch (C085TK, Hitachi). The antenna switch will route the received signal
to corresponding SAW filters (FUJITSU-B28 E/B2BE/B2BG). After filtering, the received
signal will be feeded into transceiver MT6129 for demodulation.

MT6129C

Receiver Path

To MT6129C

VOXTEL Technical Documentation 66

VS600 Service Manual

−

1st IF

MT6219C uses VERY LOW IF receiver. The following equations are for calculating

st

IF (Intermediate Freq.) frequency:

1

2nd IF

×=

CHVCO

−=

CHVCO

 VC-TCXO

If VC-TCXO is the suspected root cause, please check that it’s output frequency and

to verify. In normal circumstance, you will see C244’s voltage is 2.7V and the output

V

cc

frequency of VCTCXO should be26MHz and V
U202.

Output: 26MHz

p-p

C244: 2.7V

bandEGSMfor200KHzF2RF

band/PCSDCSfor200KHzFRF

is 1V. If not, recommend replacing

Oscilloscope

VOXTEL Technical Documentation 67

VS600 Service Manual

 Front End

If the RF front end is the suspected root cause, please check the path loss on the receiver path.
Test system setup is as followed:

Signal Generator (un-modulated signal)

EGSM ─ Frequency 950MHz / Amplitude –60dBm

D requency 1850MHz / Amplitude –60dBm

CS ─ F

PCS ─ Frequency 1950MHz / Amplitude –60dBm

Spectrum

Analyzer

EGSM ─ Central Freq. 950MHz / S

DCS ─ Central Freq. 1850MHz / Span 2MHz / RBW 100KHz / VBW 100KHz

PCS ─ Central Freq. 1950MHz / Span 2MHz / RBW 100KHz / VBW 100KHz

RF test signal
input here

A

○

pan 2MHz / RBW 100KHz / VBW 100KHz

B

○

C

○

D

○

E

○

G

○

○H○

VOXTEL Technical Documentation 68

F

○

I

VS600 Service Manual

First, set up the corresponding parameters on signal generator and spectrum
analyzer. Th

en check the readout of different test points on spectrum analyzer. Please

be noted:

1. Handset must be p

owered off

2. While measuring PCS band, U102 Pin#2 must be provided 2.7V voltage to
enable the switch.

Mode medy (if not as expected)

Expected value Re

Please check/replace U102 or
C133
Plea

se check/replace U103 or

L131
Please check/replace C134 or
C125
Please check/replace U102 or
C132
Please check/replace U104 or
L132
Please check/replace C136 or
C137
Please check/replace U102 or
C127
Please check/replace U105 or
L133
Please check/replace C138 or
C139

EGSM

DCS

PCS

Test point A -64dBm @ 950MHz

Test point B -65dBm @ 950MHz

oint C -65dBm @ 950MHz

Test p
Test point D -64dBm @ 1850MHz

Test point E

-65dBm @ 1850MHz

Test point F -65dBm @ 1850MHz
Test point G -64dBm @ 1950MHz
Test point H 0MHz

Test point I 950MHz

-65dBm @ 195

-65dBm @ 1

If the symptom is still present, proceed to next session.

 Transceiver neighboring circuits.

If front end isn’t the root cause, recommend checking MT6129’s neighboring circuits.

If the faulty is still presen

t, proceed to next session.

Pin # Expected

value

#21 2V

(20ms, pulse)

#14 #27 #37 2.8V

#30 #33 #38 2.8V

(20ms, pulse)

#31 26MHz

≒800mV)

(V

p-p

VOXTEL Technical Documentation 69

g

 MT

VS600 Service Manual

6129C

Checking MT6129C performance requires a signal generator, an oscilloscope and a
PC with RF
PCBA an’t p r replace MT6129.

c ass the test, please re-solder o

○

tool-MauiMETA. The META user interface is like below. If the defective

1

Open META

Configure the
environment settin

2

○

3

○

Choose
CONTINUOUS RX

Select corresponding
BAND, ARFCN and GAIN

U201 Pin#43#44#45#46 should have

67KHz sinusoidal signal (V

=2V)

p-p

VOXTEL Technical Documentation 70

VS600 Service Manual

7.5.2 T

In the transmitter path, VS600 is equipped with a transceiver (MT6129), a power
amplifier (SKY77328) and an antenna switch (Hitachi 085TK). A 26MHz VC-TCXO
(TXC/7P26000123) provides the frequency reference.

 MT6129C is not just only receiving signals, but also transmitting signals. MT6129C’s

transmitter is an OPLL (Optical Phase-Locked Loop) structure. It up-converts I/Q signals
from baseband to RF frequency.

ransmitter Path

MT6129C

Transmitter Path

D

ifferential

I/Q sign

als

VC-TCXO
=26MHz

V

BAT

VOXTEL Technical Documentation 71

VS600 Service Manual

or nce of MT6129C, we need the Maui META to initiate

In der to verify the performa
the TEST MODE. Please provide a 3.8V

DC source to the handset and use the
oscilloscope to measure the suggested test points listed in the table below. Please
check Pin # 1, #3 and #15 first.

Pin # Pin Name Voltage

Location Signal Type

Level

1 1.5V C222 Burst VCCTXVCO
3 3.8V B231 Continuous VBAT1

4 VCCRF 2.7V C223 Continuous

15 VBAT2

3.7V B231 Continuous

16 VCCRFBUF 2.8V C235 Continuous
21 VCCRFVCO 2V C239 Continuous
24 VCCRFCP 2.8V C249 Continuous
25 VCCSYN 2.8V C249 Continuous
30 VCCVCXO 2.8V C243 Continuous
33 VCXOFRQ 2.8V C235 Continuous
35 VCCMOD 2V C212 Continuous
37 VCCD 2.8V B211 Continuous
38 ENRFVCO 2.8V R213 Continuous

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VS600 Service Manual

V

V

A

g

V

 SKY77328 is a tri-band power amplifier. It is used to boost the amplitude of transmitting

signals from transceiver. It’s a high current consumption and moisture sensitive
component.

Antenna
Matching
Circuit

PA Input

V

PA Output

ramp

RX Path

GSM RF IN

DCS/PCS RF IN

GSM RF Out

DCS/PCS
RF Out

Name

Bat

PA_EN

Supply

Front End

DType esc ption

3.8V)
Enable ( . 2.8V) Logic

ri

oltage of Bat .

tery (Typ

Typ

BS

Logic

L: GSM900;
H: DCS/PCS

PA enable

apc

nalo

RF in

VOXTEL Technical Documentation 73

0 .1

.2~2 V

RF inpu 6

t (0~ dBm) RF

VS600 Service Manual

 085TK is a tri-band antenna switch, which has 3 RX ports and 2 TX ports.

VC1

VC2

VC3

VOXTEL Technical Documentation 74

VS600 Service Manual

7.5.3 AutoCal Meta Tool

After maintenance of MT6129C (Transceiver) or SKY77328 (Power Amplifier), we
need to re-calibrate the RF subsystem. AutoCal_Meta is used for calibration. It requires
an Agilent 8690, a Keithly DC source and a PC with AutoCal_Meta. You also need a
RS232 cable for connection between PC and handset.

Its user interface is like below:

VOXTEL Technical Documentation 75

VS600 Service Manual

A

p

g

7.5.4 Bluetooth Subsystem

VS600 employs CSR Bluetooth IC for its Bluetooth subsystem. In order to debug the
Bluetooth subsystem, we need the following equipments and SW:

Equipments: Spectrum Analyzer, Oscilloscope and PC

Software: Bluesuite, BlueCore-Handphone CW generator; both are CSR software

USB /
RS232
/LPT

RF Signal

Out

Analog /
Digital
Si

nals

 TX measurement

Open “BlueCore-Handphone CW generator”. It will activate the Blue IC’s TX

PC

orts

Spectrum

nalyzer

Oscilloscope

measurement mode. In the Frequency selection, please select 26MHz, as the
hand-phone reference clock is 26MHz.

The expected value is listed below:

VOXTEL Technical Documentation 76

VS600 Service Manual

Pin#

C311,
C312

L326

U302

C343,
C3

44

 Crystal Trimming

Open” CSR BlueSuite”_”PS Tool” for activate the test mode for Crystal trimming.
Please se requency trim. Change the dec ), and then click set.
Close the dow, and then proceed to TX measurement to check all test points.
If the measured value is beyond the expected value, change the decimal again and
proceed the TX measurement again.

lect Crystal f
prompt win

imal (0~63

xpected Value

E
3V DC
3dBm @ 2441MHz
0dBm @ 2442MHz

350mVpp @
26MHz

1

○

2

○

3

○

VOXTEL Technical Documentation 77

8 Appendix

VS600 Service Manual

 Exploded View & PCB Assembly Placem

Item P/N Description Qty

1 13GV05XAP100 Case 1 Assy 1
2 13GV05XAP200 Case 2 Assy 1
3 13GV05XAP300 Case 3 Assy 1
4 13GV05XAP400 Case 4 Assy 1
5 13GV05XAP500 Battery Cover Assy 1
6 13GV05XAP610 Navi Keypad Assy 1
7 13GV05XAP620 Number Keypad Assy 1
8 13GV05X0P700 Main Lens 1
9 13GV051AP800 DSC Lens Assy 1
10 13GV0500MB10 Navi Key Metal Dome 1
11 13GV0500MB20 LCD Frame 1
12 04G610020000 Vibrator 1
13 04G170014200 Loud Speaker 1
14 18G240180410 LCD Module 1

ent

15 60-VD5DBXXXX-XXX Sub PCB Assy 1
16 13VG050APH00 Sliding Module 1
17 08G600006421 Main C Assy 1 FP
18 13VG0500PB30 Side Assy 1 Key

Number Key Metal

19 13VG0500MB60
20 13GV050AP900 Antenna Assy 1
21 13GV0500M040 DSC Shilding CAN Top 1
22 04-370007300 Camera Module 1
23 04G160300610 hone 1 Microp
24 13GV0500LB40 Microphone Rubber 1
25 60-VD5MBXXXX-XXX Main PCB Assy 1
26 13GV0500MBD0 Tapping Screw 1 7
27 13GV0500M250 Hinge Screw 2 6
28 13GV0500M260 Hinge Screw 1 4
29 13GV05X0LB80 Car Kit Cap 1
30 13GV05X0LB90 Case 4 Cap A 2
31 13GV0500LBE0 Tapping Screw 2 2

Dome

1

32 13GV0500LBB0 Case 2 Cap A 2

DSC Lens Assy Protect

33 13GV0500LBG0

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Film

1

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