VK Mobile VK300 Service Manual

GSM PHONE

SERVICE MANUAL

MODEL : VK300

ISSUED DATE : 2003-07-18

Rev. 1.00

Table Of Contents

1. Introduction. …………………………………………………………………………………….…….1-1

2. Specification ....................................................................................................... 2-1

2.1 HW Features .............................................................................................................................................. 2-1

2.2 SW Features .............................................................................................................................. ... ... ........... 2-2

3. Disassembly Instruction ................................................................................................................ 3-1

3.1 Before Disassembly .............................................................................................................................. .. ... 3-1

3.2 Main Frame .................................................................................................................................. .............. 3-2

3.3 Folder ......................................................................................................................................................... 3-3

3.4 Exploded View and Parts List ...........................................................................................................…......3-5

3.4.1 Exploded View ..........................................................................................................................….......3-5

3.4.2 Mechanical Parts List ................................................................................................................….......3-6

4. Data Kit & Test Method(Download Procedure) ................................................................ 4-1

4.1 Data Kit ..................................................................................................................................... ................. 4-1

4.1.1 Download Equipment ............................................................................................................. .…. ... ... 4-1

4.1.2 Download Environment....................................................... ..............................……………… ……... 4-1

4.1.3 Download Procedure…..................................................... ... ... ... ................................... .... .....… .….... 4-2

5. Trouble Shooting

5.1 Power-On Trouble .......................................................................................................................... ... ... ..... 5-1

5.2 Melody Trouble ................................................................................................................................. ........ 5-2

5.3 LCD Trouble .............................................................................................................................................. 5-3

5.4 Charging Trouble .......................................................................................................................... ... .......... 5-4

5.5 Vibrator Trouble ........................................................................................................................... ............. 5-5

5.6 Backlight Trouble ...................................................................................................................................... 5-6

5.7 SIM Detection Trouble ................................ ... ... ..................................................................... ... ................ 5-7

5.8 Ear-Phone Trouble .....................................................................................................................……........ 5-8

5.9 FLIP Detection Trouble .........................................................................................................….......…..... 5-9

5.10 KEY Detection Trouble .......................................................................................................................... 5-10

............................................................................................................................... 5-1

5.11 TX Power Trouble(E-GSM) ....................................................................................................................5-12

5.12 TX Power Trouble(DCS) .........................................................................................................................5-14

5.13 RX Sensitivity Trouble(E-GSM) ....................................................................................................... ..... 5-16

5.14 RX Sensitivity Trouble(DCS) ..................................................................................................................5-18

5.15 BATT Charger Trouble ............................................................................................................................5-20

6. Block Diagram ..................................................................................................................................... 6-1

6.1 Overall ………….. .................................................................................................................................... 6-1

7. Schematic ........................………………............................................................................................... 7-1

7.1 RF PAM Block........................................................................................................................................... 7-1

7.2 RF Main Block........................................................................................................................................... 7-2

7.3 Flash & Audio Block ......................................................... ... ... ..............…….................... ... . ................... 7-3

7.4 Peripheral Block .............................. ... ... .................................... ... ... ..........................…………............... 7-4

7.5 Base Band Block (Calypso & Iota) ........................................................................................................ 7-5

7.6 Folder Block ....................................................................................................................……………..... 7-6

7.7 Battery Charger Block ............................................................................................................…….......... 7-8

8. PCB Diagram ....................................................................................................................................... 8-1

8.1 Main PCB ................................................................................................................................................. 8-1

8.2 Folder PCB ....................................................................................................................................... ... .. ... 8-3

8.3 Battery Charger PCB..................................................................................................................................8-5

9. Electrical Part List ........................................................................................................................... 9-1

9.1 Main Parts List ......................................................................................................................................... 9-1

9.2 Folder Parts List ..................................................................................................................……............. 9-8

9.3 Battery Charger Part List ..............................................................................................................……....9-10

1. Introduction

VK300 is a folder type mobile phone with color LCD, operated in the GSM and Digital Cellular Mobile Radio

System, which is the Pan-European mobile cellular standard.

VK300 has the operation band of GSM 900 and DCS 1800. GSM PhaseII features are fully supported and parts of

the GSM Phase II+ features are also supported.

About the SIM Toolkit, VK300 supports up to Class 3 including Class 1, 2. For speech communication, VK300
supports Full Rate(FR), Enhanced Full Rate(EFR) and Half Rate(HR). For easy text, eZi Text is implemented and
WAP protocol is adopted for internet connection.

VK300 supports GPRS up to Class 10.

2. Specification

2.1 HW Features

Item Description Remark

Supporting standard GSM 900/DCS 1800 (Dual Band)

E-GSM
Phase 2 and Phase 2+
SIM Toolkit : Class 1,2,3
GPRS : Class 10

Frequency range E-GSM TX : 880 - 915 MHz

E-GSM RX : 925 - 960 MHz
DCS 1800 TX : 1710 - 1785 MHz
DCS 1800 RX : 1805 - 1880 MHz

Battery Standard : ADLB, 850 mAh

Slim : ADLB, 620mAh

Display Full graphic type

Dual LCD

- Main LCD TFT-65K Color, Pixels : 128 x 160

- Ext. LCD STN 256 Color, Pixels : 80 x 80
Antenna Fixed type
Speech coding FR, EFR, HR
Data & Fax Built-in
Vibrator Built-in
Speaker+Receiver Unified Type Applied (4 pole)
Portable Handsfree (Ear-Phone) Built-in
Travel charger Built-in
Options Battery Charger country.

Melody Chip Yamaha 40 Poly
Flash Memory Flash : 128 Mbytes

RAM : 32 Mbytes

2.2 SW Features

Function Detail Item Comments

Normal features Last dialed number 20 entry

Last received number 20 entry
Last missed number 20 entry

Scratch pad memory 1
Call Call waiting Yes (network dependent)
Audio Earpiece volume 5 level

Mute on& Mute off Yes
Cell broadcast CB option Manual/Auto/Off
Phone Book Read topics SIM / Phone
Languages S/T Chinese & English Available other language
Supplementary services Call barring All calls

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

Short Message Write message Send/Save

Output message Send/Save/Extract Number/

Delete/Delete All

Input message Reply/Forward/Extract number/

Delete/Delete All
Status report Delete/Delete All
Call voicemail
Cell broadcast CB Option(Manual/Auto/Off)/Read/

Topics(SIM/Phone)/Languages
Memory status
Settings Status report/Message type

Expiry period/SMS center
Voice center/Alert

Multi-band Support of multi-band & mode GSM 900

EGSM
DCS1800

Function Detail Item Comments

Miscellaneous function Development & test facility

Field test facility
Display software version

Text input Language English

Simplified chinese
Traditional chinese

eZi text Predictive word input

Scheduler View day

Make Schedule

Call
Memo

Anniversary
Delete
View all

WAP Built in WAP 1.2.1
EMS Built in
GPRS Built in Class 10
World time Setting local time

Number of selectable cities 61 Cities

Calculator Operator Addition

Subtraction

Multiplication

Division

Unit converter Length conversion

Weight conversion
Volume conversion
Surface conversion

Pink schedule
Bio Rhythm My rhythm

With Friend
Special day
Setup My Birthday

Friend’s Birthday

Game 3EA (minimum)
SIM Card Support 1.8V / 3V SIM

3. Disassembly Instruction

3.1 Before Disassembly

1. Remove the battery. To do so:
① Pull the battery lock above the battery toward the

top of the phone and hold it in the position.

② Lift the battery away.

2. Remove the SIM card. To do so:
① Remove the SIM card.

Keep the SIM card in a safe place.

3.2 Main Frame

. Remove the four screws on the back of the phone.

1

. Insert a small ‘ - ‘ type driver between the front case

2

and the back case, and lift up the back case.

3. Now, you can replace the PCBs and the other
components.

3.3 Folder

1. Remove the bac
under Main Frame Disassembly on page 3-2.

2. Unplug the connector shown at right from the main
PCB.

. Unhook the folder from the main frame.

3

k case as described at Steps 1 and 2

. Remove the two screws from the folder.

4

5. Insert a small ‘ - ‘ type driver between the folder
upper and the folder lower, and lift up the folder
upper.

6. ow, you can remove the LCD ass’y and the other

N
components.

3.4. Exploded View and Parts List

.4.1 Exploded View

3

3.4.2 Mechanical Parts List

NO. DESCRIPTION Q’TY

1 Window Sub Lcd 1
2 F-pcb Folder 1
3 Deco Panel 1
4 Indicator Led 2
5 Folder Upper 1
6 Lcd Module 1
7 Magnet 1
8 Hinge 1

9 Rubber Screw 2
10 Screw Torx(+) 2
11 Folder Lower 1
12 Window Main Lcd 1
13 Rubber Carkit 1
14 Bushing Deco Front 2
15 Deco Front 1
16 Case Front 1
17 Knob Side 1
18 Deco Side Front 1
19 Keypad 1
20 Main Pcb 1
21 Rubber Ear Jack 1
22 Case Rear 1
23 Antenna 1
24 Rubber RF 1
25 Spring 1
26 Knob Lock 1
27 Screw Torx(*) 4
28 Battery Package 1

4. Data Kit & Test Method

4.1 Data Kit

4.1.1 Download Equipment

1. Download Cable

2. Desktop or Notebook PC

3. Fluid program

4. VK300 Mobile Phone

4.1.2 Download Environment.

To download software of VK300, the following working environments should be prepared:

• VK300 download cable, Interface JIG, is connected to serial port of the desktop or notebook PC.

• VK300 fluid program is copied to the desktop PC or notebook PC.

※

Warning

You MUST use the download cable kit (Interface JIG) and UART download Fluid program.
Otherwise,downloading process won’t work properly.

4.1.3 Download Procedure

1. Unzip Fluid program (FluidVK1_1.zip) in the PC.

2. Execute fluid_gui.exe. And then select Global setings tap. Then check settings.
Fluid location: should be selected fluid.exe
Target type: Auto detect or HERCROM400/Calipso/C-sample
Fluid verbosity: Level 2
RS232 serial port: connected COM port, 115200 bps. M ust not c hec k Use( ol d )R S2 3 2 powered level converter

< Figure 1 >

3. Select Erase/Program flash tap. Than check Write magic number for Calypso ROM code and Boot in Rom
as shown in Figure 2.

4. Press Add button and select M0 file to update.

< Figure 2 >

< Figure 3 >

5. Connect VK300 phone. And Press Erase/Program button

< Figure4 >

6. When ‘Bootloader: (rest target)’ message is display, Reset VK300 phone.

< Figure 5 >

If m0 file was already loaded to VK300 phone, Fluid just check and end download process. It’s not error.