S/M No. : SN500P-011
Service Manual
Internet Settop Box
CHASSIS : SN-500
OCT. 1999
DAEWOO ELECTRONICS CO., LTD
http : //svc.dwe.co.kr
Model :
DSN-9070
DSN-9071
✔
Caution
: In this Manual, some parts can be changed for improving, their
performance without notice in the parts list. So, if you need the
latest parts information,please refer to PPL(Parts Price List) in
Service Information Center (http://svc.dwe.co.kr).
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 high-
quality “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 YOUR 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/PulseTo 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
uThis “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 web-
sites. 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
uWhile 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
uYou 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
uClick 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
uClick 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
19
E-MAIL
18
SETTING E-MAIL
Click the ‘E-mail’ icon at the right-bottom of
screen, you will see this page which begins to
check the received mail.
After checking the mail, the left-side page will
be shown.
If you click on a mail, then it will be opened as
below
Reply To compose the response.
Forward To use this icon for forwarding the
mail to someone.
Delete To delete the mail.
Copy To copy the mail (supported only in
IMAP server).
Print To print the mail out.
Previous To show the previous mail.
Next To show the next mail.
Return To go back to the previous page.
E-MAIL-CONTINUED
To make use of this mail function, you have to
set a few things firstly. Click the ‘E-MAIL’ icon
on the page.
Then the left-side page will appear. And after
inputting the required information, press “OK”
icon to start e-mail.
Incoming mailserver
Name To input the address of sever
which you want to use.
Type To select the type of server (IMAP4
or POP3).
Username To input your mail ID.
Password To input your password.
Outgoing mailser ver
Name To input the address of outgoing
server.
E-mail To input your mail address.
10
20
ADDRESS
Click this icon and memorize the mail
addresses which you use frequently.
Add To make a new mail address.
Delete To delete a mail address.(First, you
should choose the mail address which you
want to delete.)
Edit To modify the name of mail address.
(First, you should choose the mail address.)
Write To To write a mail.
Save To save this mail address book.
Return To go back to the previous page.
FOLDER
You can make the mail folder if you use
IMAP4 protocol.
Open To open the selected folder.
Add To make a new folder.
Del To delete a folder.
Rename To change the name of folder.
Return To go back to the previous page.
E-MAIL-CONTINUED
WRITE
Click this icon to compose a new mail, then
the following will be shown.
To To type in the mail address of the
receiver.
Cc To type in the mail address of other person
who receive at the same time.
Subj To write down the subject of message.
Send To send the mail.
Print To print the composed mail out.
Cancel To cancel the composition of mail.
CHECK
Click this icon to check if a new mail has been
delivered.
21
12
2322
Terminal DC In/Out (1)
Video Out(1)
Audio (R/L) Out (1)
S-Video Out (1)
A/S Switch (1)
Printer Port (1)
External Phone Wire (1)
Smart Card Slot (1)
Dimensions 290mm X 215mm X 43mm (W X D X H)
Weight 1.25kg
Power Requirements AC 230V
Power Consumption 10W max.
Accessories Size AA Batteries (2)
DC Power Adapter (1)
A/V (Audio/Video) Cable (1)
Telephone Cable (1)
Wireless Keyboard (1)
Display System PAL-B/G, D/K, I
Printer HP 694C, some more kinds of HP and
CANON Printer will be available later
SPECIFICATION
OTHER FUNCTIONS
UPGRADE THE SOFTWARE
The software of this set-top box can be upgraded via the Internet. We
will have the new software on the Internet every time any changes are
made. The local distributor will give the address of download site. To
upgrade the software, go to the given site and click most recent file and
this set-top box will automatically upgrade itself. When completed, it
will turn itself off and restart after a while.
Looks like error? Here are the answers.
Set-top box doesn’t turn on.
oBatteries in the wireless keyboard could be weak. Check the
batteries and replace them, if necessary.
No picture, no sound.
oMake sure the power cord is connected.
oCheck that the correct TV/Video setting is selected.
ERROR DIAGNOSE
12
13
2. Specifications
Model Name DSN-9070/9071
¡Ú¡Ú¡Ú
Function
Main Function Internet, E-Mail
Display Type
On TV (NTSC or PAL)
Hardware
AC Adaptor Input
110Vac or 90~260Vac (50
§Ô/60§Ô)
DC Input
6
Vdc, 1500
§Ì
Power Consumption
15W Under
Size(W X D X H)
290 x 208 x 40(mm)
Weight
1.25
§¸
Internal side
Processor
ARM7500FE, 56
§Ö
DRAM
16MB(8MB~)
PROM
512KB
Flash ROM
2MB
Wireless Keyboard
Installed
Printer Port
Installed
S-Video Out
Installed
C-Video Out
Installed
Audio Out(L/R)
Installed
Output Type
NTSC-M or PAL-B, D, G, H, I
Connect Type
MODEM or LAN
Smartcard
Installed
Software
Browser
HTML 4.0
CSS 1.0
Java Script 1.3
Dynamic HTML
HTTP 1.0
SSL 3.0
TLS 1.0
Bookmark/Cookie/Proxy etc.
Internet Connection
Through ISP
PPP, TCP/IP
PAP/CHAP
E-Mail
IMAP or POP3
SMTP
Sound Effect
Installed
WAV/PCM Play
GIF Animation, JPEG
Installed
Anti-Flickering Function
Installed
Upgrade Through Network
Possible
Help Function
Installed
14
3. Block Diagram
15
4. Description of the Circuit Operation
1. ARM 7500FE PART
The circuit is divided into digital and analogue input/output parts around the ARM 7500FE part.
Two addresses and two data buses are basically served from the ARM 7500FE part.
- RA (DRAM ROW/COLUMN MULTIPLEXED ADDRESSES) uses 12 bits.
- LA (LATCHED ADDRESSES) uses 29 bits.
- D (MAIN DATA BUS) uses 32 bits.
- BD (MAIN EXTERNAL BUS) uses 16 bits.
RA and D are connected to the DRAM (the capacity is 8~16 Mbyte), the main memory, and are used
when the actual program is operated.
2. PROM part
D and LA are connected to the PROM (the capacity is 512 kbyte).
When the power is turned on, the system reads the initial program codes set in the PROM
and loads them onto the memory.
There is a small WEB BROWSER for emergency use in the PROM.
This can be used if there are any problems in the WEB BROWSER.
The small WEB BROWSER can be loaded by operating the power and the A/S SW.
(Turn the power on while pressing the A/S SW, then turn the A/S SW off in 5 sec.)
3. FLASH MEMORY part
BD and LA are connected to FLASH MEMORY (the capacity is 2 Mbyte to 4 Mbyte memories),
which performs the same function as a hard disc in a PC.
The main program, WEB BROWSER, is loaded, and the INTERNET SET TOP BOX operates.
4. RECEIVER CIRCUIT part
These can be used as wireless-type accessories through the receiver circuit composed of receiver devices,
89C2051 and 97L52.
5. PRINTER OUTPUT part
8 bit data is supplied to the printer port from BD through 74HC377 for printing.
The printer control signals are supplied through the 8 bit WIDE IO PORT.
6. VIDEO OUTPUT part
The composite video and S-VHS(Y, C) signals are provided so the the signals can be displayed on the TV using the
CH7001C NTSC ENCODER.
- Horizontal/vertical position change : UP(#26), DOWN(#27), LEFT(#28), RIGHT(#29)
- Flicker filtering : MS0(#11), MS1(#12)
16
3. Description of the Circuit Operation
7. CLOCK part
A clock is needed for the main board of the INTERNET SET TOP BOX.
IO CLK(64
§Ö)
MCLK(56
§Ö
) and VCLK(25.18
§Ö
) are supplied to the ARM 7500FE,
and XOUT(14.318
§Ö
) is supplied to CH7001C.
The clock doubling chip, CH9294, connected to crystal (14.318
§Ö
) taked the role.
The another crystal(64
§Ö
) supplied IOCLK.
8. SOUND OUTPUT part
SOUND OUTPUT is supplied from the ARM 7500FE in digital types.
Analogue signals, R and L, are supplied to the external amplifier through CS4333 (SOUND ENCODER)
using the digital type stereo sound data and the clock.
9. POWER part
DC 6V is applied to the SET from the power Adaptor.
The power LED is turned ON/OFF by receiving signals from regulated Receiver IC.
Stand by 5V is by Metal Oxide type Resister and Zener diode circuit.
Main Vcc is regulated by PQ05RF21 Regulator.
10. MODEM part
Data needs to be added by the vendor.
17
5. Trouble Shooting
1. Contents
1) Don’t turn on power LED.
2) No function of wireless keyboard or remocon.
3) Though it turn on the power LED, No raster.
4) No color or Raster with unstable sync.
5) PROM booting
6) Don’t Progress booting
7) Can’t connect ISP
8) Can’t hear sound effect and Playing wave file
9) Can’t print
2. To download a browser for A/S
1) Turn off set
2) Push the A/S button (S002) and turn on set.
3) You should push the A/S button until the green LED goes out
4) Select ‘1. Modem’ or ‘2. Ethernet’
5) Input the required information
6) Then, the set automatically downloads new browser for a few minutes
7) New browser rebooting, automatically
18
1) Don’t turn on Power LED
O.K
check
Adapter output(6Vdc)
check
Reconnection
I005 #40 S/B 5Vdc
check
Change the adapter
I005 #40 < -> #1,
I025 #2(VCC) check
LD001 (LED)
check
SB5V and GND, R088
ZD001,D040
check/Replace
I025 #4 (high) check?
I025 check/Replace
LD001(Red)
Check/Replace
2. No function of
Wireless KBD/Remocon
START
Adapter connection
O.K
O.K
O.K
O.K
N.G
N.G
N.G
N.G
N.G
Page is loading ...
Page is loading ...
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Page is loading ...
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Page is loading ...
Page is loading ...
Page is loading ...
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