Daewoo DSN-9070, DSN-9071 Schematic

S/M No. : SN500P-010

Service Manual

Internet Settop Box

CHASSIS : SN-500

Model :

DSN-9070
DSN-9071

DAEWOO ELECTRONICS CO., LTD

http : //svc.dwe.co.kr

OCT. 1999

TABLE OF CONTENTS

1. Instruction Manual ....................................................................................................................... 1

2. Specification................................................................................................................................. 13

3. Block Diagram.............................................................................................................................. 14

4. Description of the Circuit Operation .......................................................................................... 15

5. Trouble Shooting.......................................................................................................................... 17

6. Circuit Diagram............................................................................................................................. 26

7. Exploded View.............................................................................................................................. 32

8. Packing View ................................................................................................................................ 33

1

PRECAUTIONS

Read carefully through this manual to familiarize yourself with this high­quality “set-top box”.

Make sure the rating of your household electricity supply matches that
shown on the power adapter.

Refer to this chapter and the "Initial installation" chapter to help you
install and adjust your “set-top box”.

Do not ...
... expose the “set-top box” to high levels of humidity and heat, to avoid

the risk of fire and electric shock.

...

open the “ set-top box”. Have a qualified technician carry out repairs.

... connect the “set-top box” to the power supply if you have just moved

it from a cold to warm environment. This can result in condensation
inside the “set-top box” and cause serious damage to the machine.
Wait around two hours to allow it to reach room temperature.

Make sure ...

... the “set-top box” is placed on a steady, flat surface.
... you place the “set-top box” where there is good ventilation all around.
... you clean the “set-top box” only with a soft, lint-free cloth; do not use

aggressive or alcohol-based cleaning agents.

... you disconnect the power supply if the “set-top box” appears to be

working incorrectly, is making an unusual sound, has a strange smell,
has smoke emitting from it or liquids have got inside it. Have a qualified
technician check the box.

... you disconnect the power supply and aerial if you will not be using the

“set-top box” for a long period or during a thunderstorm.

For your own safety!

There are no components in this “set-top box” you can
service or repair yourself.

Do not open the case of the “set-top box”. Only allow
qualified personnel to repair or service your set.

This “set-top box” is designed for continuous operation.
Switching it off does not disconnect it from the mains
(stand-by). To disconnect it from the mains, you have to

Instruction
Manual

1

unplug it.

32

CONTENTS

INTRODUCTION

Features

_______________________

3

Package contents

________________

4

Name of parts

___________________

5

CONNECTING Y OUR SYSTEM ___________ 8
INITIAL SETUP

Setting the network ______________

9

WEB BROWSING

Surfing the internet

______________

11

Setting the browser _____________

16

Setting the printer

_______________

17

E-MAIL

Setting E-mail

__________________

18

E-mail _______________________ 19

OTHER FUNCTIONS

Upgrade the software

____________

22

Error diagnose

_________________

22

Specifications

__________________

23

Thank you very much for purchasing the Internet Set-top Box. To enjoy
the Internet with this Set-top Box, you are recommended to subscribe
to a local network. And for better and easier use of this product,
please read through the following chapters of this manual carefully.

This chapter shows you the key features of the Set-top Box and
reviews package contents and name of parts.

As a home multimedia terminal, this Set-top Box has many useful
features described below. The Set-top Box makes you explore the
Internet easy and fun with features such as :

Browser

- HTML 4.0

- CSS 1.0

- SSL 3.0, TLS 1.0

- JavaScript 1.3

- Cookie & Bookmark

- Off-Line Browsing

E-mail

- POP3 or IMAP4 supported

- Address Book

- Off-Line E-mail

Upgradability through the Internet

Wireless Keyboard with Track-ball

FEATURES

INTRODUCTION

2

1. POWER ON/OFF indicator

Indicates whether the set-top box is on or off.

2. OPERATING indicator

Flashes when the set-top box is connecting to your
ISP and when receiving new information. Remains
lit while in use.

3. SMART CARD slot

Allows you to use a Smart Card when the
technology becomes available. Smart Cards, which
are being developed by the finance industry, are
credit cards with an added computer chip that
stores personal information. Smart Cards will make
transactions conducted on the Internet, such as
buying products, paying bills, and banking, safer
and more convenient. Additional accessories may
be required.

4. Wireless keyboard receiving window

5

NAME OF PARTS

4

INTRODUCTION

-CONTINUED

31

24

PACKAGE CONTENTS

Make sure you have received all of the following items in your Internet
Terminal package:

Set-top Box

FRONT PANEL

Telephone linecord ManualVideo/Audio cable

Power Adapter2 BatteriesWireless Keyboard

3

7

6

INTRODUCTION

-CONTINUED

1. TRACK-BALL

To move the pointer on the screen.

2. CLICK

To put in practice something that you selected with
the pointer.

3. POWER button (Green)

To turn on the set-top box or turn off.

*

Many buttons in the first row may not works, and
the function of them may be changed for more
convenient use later.

1

2
3

1 2 3

4 5 6 7

1. VIDEO OUTPUT

Connects your set-top box to the video input of your
TV.

2. AUDIO R, L OUTPUT

Connects your set-top box to the right and left audio
inputs of your TV.

3. Phone Wire Port

Connects your set-top box to a telephone jack.

4.

DC INPUT

Connect the power adapter to your set-top box.

5. DC OUTPUT

6. S-VIDEO OUTPUT

Allows you to connect your set-top box to your TV
for better picture quality (if your TV has an S-Video
Input)

7. PRINTER OUTPUT

Allows you to connect your set-top box to a printer.

REAR PANEL

WIRELESS KEYBOARD

4

9

INITIAL SET-UP

SETTING THE NETWORK

8

CONNECTING YOUR TV, TEL-LINE, PRINTER

When you turn on the set-top box, the page
will appear.

While initializing the set-top box, the progress
bar will be shown at the bottom of screen
until the initialization is finished.

The left-side page in which you are asked to
select ISP will appear.

Click “Cancel” and “CONNECTION” icon
which is located on the right-bottom of
screen.

CONNECTING YOUR SYSTEM

1. Connecting your TV

Connect audio and video cable to the set-top
box and to audio and video input on your TV .

2. TV with an S-VIDEO jack

If your TV has S-VHS input, connect the S-VHS
cable to the set-top box and your TV.

* S-VHS cable is not supplied.

3. Connecting your Tel-Line

Connect the telephone line from the wall to
the phone jack marked port( )

4. Connecting your power adapter

Connect the power adapter to turn on and off
your set-top.box.

5. Connecting your Printer

1

4

3

2

Power Adapter

5 Printer

5

11

SURFING THE INTERNET

10

INITIAL SET-UP

-CONTINUED

In the case of modem type, “Network setup”
screen will appear like left-side. Input the
required information. Please refer to the
below explanation.

ISPTo select the name of ISP.

Tel To type the telephone number of ISP.
ID To input the user ID.
PasswordTo input the user password.
Tone/Pulse To select tone or pulse type in

accordance with your phone dial mode.
Below 6 items are optional.

DNSTo set the “DNS server”.
HTTP Gateway To set the “HTTP Gateway”.
Proxy To set the “Proxy”.
Time To set the “Time”.
CHAP Server To set the “CHAP server”.
VJ Compression To set the “VJ compression

option”.
When the input is finished, click OK. Then the

initial page will appear.
In the case of LAN type, “Network setup”

screen will appear like left-side page. Input
the required information. Please refer to the
below explanation.

IP Address To type in the IP address.
Gateway To type in the Gateway.
Subnet Mask To type inthe Subnet Mask.
DNSTo type in the DNS.
HTTP Gateway To set the HTTP Gateway.
ProxyTo set the “Proxy”.
TimeTo set the “Time”.

Please check the above information from the
network manager.
“BROWSER”, “E-MAIL”, “SETUP” and
“CONNECTION” icons will be shown at the
right-bottom of screen.

“BROWSER” icon.
“E-MAIL” icon.
“SETUP” icon.
“CONNECTION” icon.

Click the “BROWSER” icon.

Then the input box and menu icons will be
shown at the bottom of screen.
Type in the address of site which you want to
visit, and click the “go”.

The desired web-site will appear.

WEB BROWSING

6

1312

WEB BROWSING

-CONTINUED

FIND

u This “find” icon is used to look for a word in

the current web-site.

1. Click on ‘find’ icon and then the following text
box will appear at the bottom of the screen.

2. Type in the word that you want to look for in
the current web-site and choose the options
(please refer to the following explanation on
each option).

Input Box To type in the word which you

want to look for

Case To decide to look for the word
distinguishing a capital from a small letter

.

Upper To decide to look for the word in the
upper part of the current page on screen

Lower To decide to look for the word in the
lower part of the current page on screen

3. Click ‘find’ icon to start looking for the word
and ‘cancel’ to stop finding.

INPUT BOX

Type in the address of the site which you want
to visit, and click the “go” icon. In case that
the address of the site is in the form of
‘www.???.com’, you may type in the middle
part of the full address. For example, you can
just type in ‘yahoo’ for ‘www.yahoo.com’.
Otherwise, you have to type in the full address
like 'www.w3.org'.

If you click this icon, the latest ten (10) sites
which you have visited will be shown.

GO

This button makes the browser start when you
typed in the URL in the Input Box.

BACKWARD & FORWARD

These “back” and “forward" icons are used to
move on to the previous and the next web­sites. Just click on these icons to move on.

And if you click on “arrow” icons right-sided,
the sites which you have visited will be
shown.

RELOAD

Click on this icon to reload the entire web
site.

STOP

u While downloading a certain site, just click on

this icon to stop downloading.

7

1514

BOOKMARK

You can memorize more than 1,000 of your
favorite web-sites, and also categorize those
sites into 12 different categories (folders). So,
you can visit the desired web-site by just
clicking the name of the site memorized on
each folder, without typing in the address of
the site in the “Input box”.

Click the “bookmark’ icon, and then the
bookmark page will appear.

ADD

1. When your desired web-site is completely
downloaded, click “bookmark’ icon. And then
the text box and icons will appear.

WEB BROWSING

-CONTINUED

2. To add the site in the “bookmark”, click the
‘add’ icon and choose the folder that you want
to put the site into.

3. Click the ‘close’ icon to go back to the Internet
surfing mode.

To use the bookmark later, click the
‘bookmark’ icon, find the site name that your
want to visit and just click on it. Then, the
web-site will be opened.

Add folder To make a new folder
Edit To rename a folder
Del To delete a memorized site
Move To move a memorized site from a

folder to another

8

17

SETTING THE PRINTER

SCREEN & SOUND SETUP

Click the “Screen & Sound Setup”, then the
left-side page will appear.

Adjust Screen To set the screen position.
Select SoundTo select the sound effect.

PRINTER SETUP

Click the “Printer Setup” then the left-side
page will appear. You can choose the printer
which you want to use.

You can print out the current web-page to
click the “Print” in the menu icons.

16

SETTING THE BROWSER

u You can set the environment into your desired

one. Just click on the “SETUP” icon, then five
kinds of menu for the environmental set-up
will be seen.

GENERAL SETUP

u Click the “General Setup”, then the left-side

page will appear.
Initial Page Setup To set the firstly shown

site when you turn on set-top box and select if
you set the first page into the Initial
Homepage, the empty screen or the latest
page that you visited recently.

Auto Disconnection To set the time for
automatic disconnection.

Upgrade SetupTo update the software.

APPEARANCE SETUP

u Click the “Appearance Setup”, then the left-

side page will appear.
Default Font SizeTo select the font size of the

letter.
Default Font Face To select the font face of

the letter.
Use scroll bar To use the scroll bar of the

web site.

WEB BROWSING

-CONTINUED

9