FLY VK2000 SVC Manual

GSM

SERVICE MANUAL

VK Quality Group GSM C/S

VK2000+

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• Precise adjustment should be made in a shield box or shield room where spurious noise has been eliminated.

• When using magnetized tools, note that related magnetic elements may cause malfunctioning of critical parts(such as IC).

• Use a twisted pair wire of thick type when measuring level. Using such a thick twisted pair wire could reduce the measurement error as the wire contains less RF resistance.

• When disassembling the phone set, you must use a driver tool meeting standard requirements.

Service Guidelines

• When making repairs with power on after connecting the test package, note that dangers such as overcurrent, parts deterioration caused by short-circuit may occur.

• Note that PCB land may be detached due to overheating of a soldering iron while making repairs on board status.

• Any additional devices that cause the change of performance shall not be added to this phone, as registered.

VK Quality Group GSM C/S

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Table of Contents

Chapter 1. Overview & Features

Chapter 2. Appearance & Configuration

Chapter 3. Assembling & Disassembling Methods

Chapter 4. Block Diagram

Chapter 5. Schematic

Chapter 6. PCB Diagram

Chapter 7. Trouble Shooting

Appendix. Electrical Part List

VK Quality Group GSM C/S

CHAPTER 1.

OVERVIEW & FEATURES

VK Quality Group GSM C/S

1.

2.

3.

Overview

Features

Standard

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Overview

VK Mobile Phone is a Slim Bar type mobile phone with color LCD,

in the GSM and Digital Cellular Mobile Radio System, which is th

European mobile cellular standard.

VK Mobile Phone has the operation band of GSM 900 and DCS 1800.

PhaseII

are also supported.

About the SIM Toolkit, VK Mobile Phone supports up to Class 3 in

Class 1, 2. For speech communication, VK Mobile Phone supports F

Rate(FR

implemented and WAP protocol is adopted for internet connection.

VK Mobile Phone supports GPRS up to Class 10

features are fully supported and parts of the GSM Phase II+ fea

), Enhanced Full

Rate(EFR

) and Half

Rate(HR

). For easy text,

operated

e Pan--

e Pan

cluding

ull

eZi

GSM

tures

Text is

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Features (HW)

Catagory Sub-Catagory Description

Design

Network

LCD Main display 143 x 128 , 1.5" 65K CSTN Video

Audio

Data Service

Memory Nor/SRAM 128 Mb / 32 Mb

Dimension 89.9 x 49.9 x 8.8 Weight 48.6 g with standard battery (TBD) Form Factor Slim Bar Antenna Intenna Radio GSM, EGSM, GPRS R/F band Dual Band EGSM900, DCS1800 GPRS Class Class B 10 (4+2) Speech Codec FR, EFR, AMR

MPEG4 N/A H.263, H.264 N/A Video output N/A Sound format Buzzer Ring tones Yes (1poly Buzzer) Voice support codec AMR (TBD) SMS/EMS/MMS Yes WAP Ver 2.0 Java N/A Instant Massage N/A e-mail N/A

Battery Connectivity

Option

DescriptionSub-CatagoryCatagory

38 x 43 x 29 (470mAh)Standard YesRS232C N/AUSB N/APC syncronization YesTravel charger Adapter YesEar – Microphone

YesBattery Charger N/APC – Sync

VK Quality Group GSM C/S

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Features (SW)

Normal features

Call Audio

Phone book Languages Supplementary services

S/T Chinese & English

COMMENTSDETAIL ITEMFUNCTION

10 entryLast dialed number 10 entryLast received number 10 entryLast missed number Network dependentCall waiting Yes 5 levelEarpiece volume YesMute on & Mute off SIM/Phone

All callsCall barring All outgoing calls All outgoing international calls

All outgoing int. calls except to home country

All incoming calls

All incoming calls when roaming

Cancel all

FUNCTION DETAIL ITEM COMMENTS

Short message

Write message

Outbox(unsent items/sent items) Delete/Delete All/

Inbox

Information Message Topics Edit/Delete)

Voice message

Memory status SMS SIM/PHONE Number),

Send/Edit/Delete/Delete All/Copy to SIM,Phone(SMS only)/Move to

SIM,Phone(SMS only

Reply/Forward/Callback/ Copy to SIM,PHONE(SMS only)/Move to

SIM,PHONE(SMS only) Reception(On/Off)/Read

Listen to Voice Mail/Set Voice Mail Number

Call Diverting

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Settings

delivery report, Validity period/SMS center No.(SMS only)

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Features (SW)

FUNCTION DETAIL ITEM COMMENTS

Multi-band Support of multi-band & mode GSM 900 / DCS1800 Miscellaneous function

Text input

WAP Built in WAP 2.0 EMS Built in GPRS Built in Class 10 Calendar

Alarm

Memo Edit and view 10 Memos Calculator Operator

Test facility Display software version Language English

Simplified Chinese Traditional Chinese

T9 Predictive word input

New Delete All Schedule List Morning Call Reminder

Addition Subtraction Multiplication Division

Unit converter

World time

Stop Watch SIM Card

COMMENTSDETAIL ITEMFUNCTION

Length conversion Weight conversion Volumes conversion Surface conversion Temperature conversion Setting local time

65 CitiesNumber of selectable cities

Support 3V SIM

VK Quality Group GSM C/S

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Standard

Transmitter

1) Rated Output:

3) Radiowave Type: E-GSM Tx = 880~915 Rx = 925~960MHz

4) Oscillation Mode: PLL Synthesize

5) Modulation Mode: GMSK

7) Terminal Amp(IC): TQ7M4006

8) Channel Separation: 200KHz

9) RF1 Local Oscillation Frequency:

10) IF VCO Frequency: EGSM = 798MHz

11) Multiplying Method: Frequency Multiplying

12) Spurious 1G~4G(-30dBm or below from the FTA standard)

GSM900 = 2W(Max) DCS = 1W(Max) P-GSM Tx = 890~915 Rx = 935~960MHz DCS Tx = 1710~1785 Rx = 1805~1880MHz

GSM900 = 90Hz6) Frequency Stability: DCS = 180Hz

EGSM = 1849.8 ~ 1919.8MHz DCS = 1804.9~1879.9MHz

DCS = 766MHz

Receiver

1) Channel Number:

2) Channel Separation:

3) Oscillation Mode:

4) RF2 Local Oscillation Frequency:

5) Intermediate Frequency:

6) Modulation Mode:

7) Spurious:

E-GSM = 975~1023, 1~124 P-GSM = 1~124 DCS = 512~885 200KHz PLL Synthesize E-GSM = 1279 ~ 1314MHz

DCS = 1327 ~ 1402MHz 100KHz GMSK

1G~4G(-30dbm or below from the FTA standard)

VK Quality Group GSM C/S

CHAPTER 2.

APPEARANCE & CONFIGURATION

VK Quality Group GSM C/S

1.

2.

3.

Appearance

Configuration

LCD Panel

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Appearance

VK Quality Group GSM C/S

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Icons

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Icons

VK Quality Group GSM C/S

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LCD Panel

VK Quality Group GSM C/S

CHAPTER 3.

ASSEMBLING & DISASSEMBLING

VK Quality Group GSM C/S

1.

2.

Assembly Drawings

Disassembling Methods

1. Assembly Drawings

VK Quality Group GSM C/S

1)

2)

3)

Exploded View

Mechanical Parts List

Ass’’yy

Ass

View

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Exploded View & Parts List

NO. DESCRIPTION Q’TY

1 Window Main 1 2Keypad 1 3Deco Front L 1 4Deco Front R 1 5 Case Front 1 6 Spring Knob 1 7 Knob Lock 1 8Cover Front 1

9Main Pba 1 10 Case Rear 1 11 Screw(M1.4 x 3.0) 4 12 Battery Innerpack 1

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13 Case Battery 1 14 Indicator 1 15 Cover Earjack 1 16 Knob Side 1 17 Intenna 1 18 Cover Rf 1 19 Cover Screw 2

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Ass’’yy

Ass

View

Case Front

Case Front Ass’y

VK Quality Group GSM C/S

Ass’’yy

Ass

☞

Ass’’yy

Ass

View

Folder Lower

Folder Lower Ass’y

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Ass’’yy

Ass

2. Disassembling Methods

VK Quality Group GSM C/S

1)

2)

3)

4)

Tools

Battery & Rear Case Disassembling

Main PCB Disassembling

Folder Disassembling

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Tool Preparation

Disassembling tools are as below :

1. Star-shaped(*) Screw Driver

2. Hinge Remover

3. Tweezers

1. 2. 3. 4.

In disassembling the VK Mobile Phone set,

- you must use tools meeting standard specifications.

- do not exert excessive force; Otherwise, the phone set may be damaged.

VK Quality Group GSM C/S

4. Cross-tip(+) Screw Driver

Battery & Rear Case

Disassembling

VK Quality Group GSM C/S

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Battery

1. Pull the battery lock toward the bottom of the

2. Lift the battery away.

VK Quality Group GSM C/S

battery pack and hold it in the position.