Daewoo DSD-9251MA User manual

Broadcasting
Digital VVideo
DSD-9251MADSD-9251MA
D I G I T A L
Digital Satellite Receiver
CHASSIS : SD-240V
Model : DSD-9251MA
OCT 2003
S/M No : DSD240VEF0

1
GENERAL INFORMATION
1. General Information 2
2. Main Feature of DSD-9251MA 2
3. For Your Safety 2
4. Unpa king 2
5. General Operation of DSD-9251MA 2
6. About the Smart Card and CA Module 3
7. Remote Control 3
8. Front Panel 4
9. Rear Panel 4
10.Produ t Spe ifi ation 5
CIRCUIT OPERATING MANUAL
1. Blo k Diagram 6
2. Interfa e 7
3. Peripheral devi e of STI 5518 10
4. Front-End Interfa e 17
5. A/V Interfa e 20
6. Software Operating Steps 25
FIXING ERRORS
1. BOOTING ERROR 28
2. Disabled S reen 30
3. Faults in AUDIO/VIDEO system 33
PART LIST 35
SCHEMATIC DIAGRAM 39
EXPLODED VIEW 51

2
GENERAL INFORMATION
1 GENERAL INFORMATION
A Digital Satellite Re eiver is a onvenient produ t that allows you to view a variety of programs provided through satellite.
This user s guide overs the installation of the DSR and the ne essary steps to implement various features.
This also explains spe ial features available only in this DSR in detail, whi h will allow you to make full of these feature.
2 Main Feature of DSD-9251MA
¥ High quality Digital Video & Audio
¥ Fully MPEG2, DVB ompliant
¥ One step dire t move menu system (Go To fun tion)
¥ Provide friendly and easy-to-use menu system
¥ Install Wizard system in the earliest of the world
¥ Various hannel editing fun tion
(favorite, moving, lo king, renaming, deleting and sorting)
¥ User programmable various Satellite & Transponder information
¥ Automati ally sear h for newly added transponder
¥ Stores up to 2000 hannels
¥ Easy and speedy software upgrade through RS-232 port
¥ Plug-and-plug data transfer system (DSR to DSR)
¥ Automati ally ea h hannel volume saving fun tion
¥ Timer fun tion, automati ally turns On/Off by setting fun tion
(daily, weekly, monthly, one time)
¥ Automati reserved hannel moving system
¥ Provide Ele troni Program Guide (EPG)
¥ Teletext fun tion support
¥ Antenna Positioning Help feature
¥ Sele table Video output (CVBS, RGB)
¥ Provide various swit h types, LNB types and NTSC/PAL monitor type
¥ SCPC/MCPC Re eivable from C/Ku Band Satellite
¥ Multi LNB ontrolled by DiSEqC 1.0 DiSEqC 1.2 and 22KHz swit hing
¥ 256 olors On-S reen-Display
¥ PAL&NTSC Video Compatible (TV Type auto dete t)
¥ Last hannel auto saving
¥ 2 CI Module Slot
3 For Your Safety
¥ Allow lear spa e around the DSD-9251MA for suffi ient ventilation
¥ Do not over the DSD-9251MA or pla e it on a unit that emits heat
¥ Use a soft loth and a mild solution of washing-up liquid to lean the asing
¥ Do not onne t or modify ables when the DSD-9251MA is plugged in.
¥ Do not remove the over
¥ Do not allow the unit to be exposed to hot, old or humid onditions
¥ Never allow liquids, spray or other materials to ome into onta t with the inside of the DSD-9251MA
4 Unpacking
After pur hasing the DSR, unpa k it and he k to make sure that all of the following items are in luded in the pa kaging
¥ 1 x Remote Control Unit (RCU)
¥ 1 x User s Guide
¥ 1 x DSR
5 General Operation of DSD-9251MA
Throughout this manual you will noti e that the everyday operation of your DSD-9251MA is based on a series of user
friendly on s reen display and menus. These menus will help you get the most from your DSD-9251MA, guiding you
through installation, hannel organizing, viewing and many other fun tions.
All fun tion an be arried out using the buttons on the remote ontrol, and some of the fun tion an also be arried out
using the buttons on the front panel.

3
General Information
If at any time when you using the menus you want to return to the normal TV mode, press the TV/AV button.
The DSD-9251MA Mis easy to use, always at your ommand and adaptable for future advan es.
Please be aware that new software may hange the fun tionality of the DSD-9251MA
Should you experien e and diffi ulties with the operation of your DSD-9251MA, please onsult the relevant se tion of
this manual, in luding the Problem Shooting, or alternatively all your dealer or a ustomer servi e adviser.
PR
PR
PR
OK/LIST
MENU
TV/RADIO
EXIT
PAUSE
TXT TV/AV
L
R
INFO EPG
UHF
ALT-AUDIO
Key Function
Swit hes between the operational mode and stand-by
mode of the re eiver (Green lamp lights up during the
operation, Red lamp lights up in stand-by mode)
TV/ RADIO Swit hes between TV and Radio mode.
Mutes the sound.
Swit hes ba k to previous hannel.
INFO Shows information of the urrent hannel.
MENU Displays menu on s reen, and alls ommand box.
EXIT Returns to the previous menu on the menu s reen.
ALT-AUDIO When wat hing a hannel, swit hes the audio
languages.
EPG Calls up the EPG
(Ele troni Program Guide)
OK/LIST Exe utes the sele ted item in the menu s reen, or
enters the desired value in any input mode.
0 - 9 Enter the number in the required menu item or sele t
a hannel number to wat h.
PR When wat hing, hanges hannels, or moves to the
next higher or lower item in the menu.
When wat hing, adjusts the volume, or moves to the
left or right item in menu.
Moves up / down a page in the hannel list.
PAUSE Press on e to freeze the s reen pi ture.
Press on e again to go to the normal mode.
Sele ts the different audio model.
TXT Swit hes to the Teletext mode.
UHF Swit hes to the UHF Tuning Mode.
TV/AV Swit hes between TV and AV mode.
L
R
PR
7 Remote Control
6 About the Smart Card and CA Module
To be able to re eive s rambled digital satellite hannels you will need a
Common Interfa e CA(Conditional A ess)module and a smart ard from a
Servi e Provider. It is possible to use two CA modules. The Servi e Provider is
the programme distributor. The Servide Provider is the programme distributor. If
you are subs ribing to servides from more than one Servide Provider, you might
have to hange between different Smart- ards and/or CA modules. Please note
that a Smart ard and CA module may only be valid for a single Servi e Provider
and due to this, a spe ifi range of hannels. The Smart ard and the CA module
may also provide a ess to spea ial menus not des ribed in this manual. If so,
please follow the instru tions from the Servide Provider. Only free to air
hannels are available without the Smart ard and/or the CA Module.
Note : The Smart ard and/or the CA module are distributed by your Servi e
Provider. After inserting the ard, leave it in the solt permanently. Do not remove
it again, unless your Servi e Provider asks you to do so. This is important,
be ause if your Servide Provider wants to download new information to the
Smart ard, the ard has to be in the slot.

4
General Information
8 Front Panel
9 Rear Panel
KEY FUNCTION
Swit hes between the operational mode and stand-by
mode.
When wat hing, hanges the hannel, or in the menu,
moves to the previous and next item.
Broadcasting
Digital V
V
ideo
DSD-9251MA
DSD-9251MA
D I G I T A L
CAUTION
90-250V~
50/60Hz, 30W
VIDEO
R
_
AUDIO
L
_
AUDIO
LNB IN
LNB OUT
_
RS 232
TV
13/18V
Max. 500mA
CONNECT TO TV AND
RS232 : CONNECT TO A PC FOR S/W UPGRADE
LNB IN : CONNECT TO SATELLITE ANTENNA
LNB OUT : CONNECT TOANOTHER RECEIVER
CONNECT VIDEO TO ATV USING RCA JACK
CONNECTAUDIO L/R TO TV OR AUDIO TUNER
geprufte
Sicherheit
OFF
ON

5
General Information
10 Product Specification
System Capabilities : Fully DVB ompliant
Demodulator
Waveform : QPSK demodulation and FEC de oding in a ordan e with
DVB prETS 300 421
Symbol rate : 2 < Rs < 45 Msps
Video Decoder
De ompression : MPEG-2 Mian Profile@Main Level
Data rates : Up to 60 Mbits/s
Video formats : 4:3, 16:9
Audio Decoder
De ompression : MPEG laver I and II, Musi am
Outputs : Stereo Channel, Dual Mono, Joint Stereo, Mono
Application System Resources
Mi ropro essor : St Mi roele troni s STi5518
Clo k frequen y : 81 MHz
Flash memory : 1 Mbyte
SDRAM : 8 Mbyte
Graphi display : 720 x 576 (PAL)
720 x 480 (NTSC)
Connector Summary
LNB : 1 x LNB input (F-type)
: 1 x LNB output (F-type : Loop through) : Option
RCA : 4 x RCA ja ks (CVBS, Audio L/R)
SCART : 1 S art (TV)
RS232 : 1 x 9-pin D-sub (Max 625K bits/s)
LNB & Tuner Input
Input frequen y : 950 to 2150 MHz
Digital signal input level : -65 to -25 dBm
LNB supply : 13.0 0.5V / 18.0 0.7V, max.500mA
Band swit h ontrol : 22 KHz (Mi ropro essor ontrol)
Conne tor : 1 x F-Type, 3/8-32UNEF-2A
2 x F-Type, 3/8-32UNEF-2A (Option)
Power Supply
Main input voltage : 90 - 250V AC 50Hz/60Hz
Normal power onsumption : 30W
Remote Control
Number of keys : 31 Keys
Operating distan e : Up to 10m
Front Panel
Number of keys : 3 Keys
Indi ators : power on / Stand by
Display : 4 Digits (7 segments)
Remote ontrol input : Infrared re eiver

6
CIRCUIT OPERATING MANUAL
1 Block Diagram
DSD-9230E BLOCK DIAGRAM
DSD- 9251MA Block Diagram
CPU
(STi5518)
AUDIO D/A
FLASH ROM
(4Mbit)
SDRAM
(32Mbit)
Television
Satellite dish
TUNER
A/D
6bit
DUAL
LINK IC
QPSK
FEC
RCA
CON
TV
SCART
RCA
RS-232
PORT
AV
S/W
(MM1232)
VIDEO
AUDIO
FRONT
SMPS
+5V
+3.3V
+12V
+30V
+22V
+7.5V
Digital
Audio
Converte r
(TDA1315)
RCA
Interface
I
2
C BUS
POSITIONER
& SKEW
Feature 1. Blo k Diagram

7
CIRCUIT OPERATING MANUAL
2 Interface
(1) Key Interface
Input an be made by Key using PIO Port for the Key I/O ontrol.
The key value after the s anning is al ulated by one Input port and 7 Output Ports.
Output ports are used with the segments of the display.
* Key S an Method
Perform the Low S an ,using the Key Output Port(KO0-7) with the
y le of 64ms. If the Key is pressed, the Key Input Port will
re ognize the status as low eventually lead to the key ode value
while going through the step from K0 to K7.
S1
R1
10K S2 S3 S4 S5 S6 S7 S8
VCC
KI1
K0-K7
K0
K1
K2
K3
K4
K5
K6
K7
KI1
K7_SEG_CLK
K6_SEG_G K5/SEG_F K4/SEG_E K3/SEG_D K2/SEG_C K1/SEG_B K0/SEG_A
64ms
Feature 2. Key S an

8
CIRCUIT OPERATING MANUAL
(2) Remote controller Interface
Re ognize the REMOCON Code value after analyzing Interrupt Interval Time through PIO Port that reads the output
signal of the IR sensor.
MITSUBISH formats were used for the REMOCON signal. Following is the Timing Diagram for the MITSUBISH signal
format.
The signals are made up of Leader Code, Custom Code (8bit), Separator and Data Code (8bit). Following is the value
of the individual Key.
8.0 4
C
ustom co
d
e
8bit
D
ata
bi
t
8bit
60 60
60
8.0 4.0
0.5
0.5
0.5
1
.5
Feature 3. MITSUBISH Format Timing

9
CIRCUIT OPERATING MANUAL
Chart 1. Remote ontroller Key Code
Key Function Hex Key Function Hex
Custom ode 0x16 0x1C
Power 0x15 INF0 0x21
Mute 0x12 PR 0x17
1 0x01 PR 0x18
2 0x02 0x14
3 0x03 0x13
4 0x04 OK 0x11
5 0x05 EXIT 0x23
6 0x06 0x1D
7 0x07 EPG 0x24
8 0x08 PAUSE 0x1E
9 0x09 Audio-L/R 0x0D
0 0x00 ALT-AUDIO 0x0E
TV/RADIO 0x0A TXT 0x25
PR 0x20 UHF 0x26
MENU 0x22
(3) Display Interface
The signal that ontrols the Segment of 7-Segment is used with the signal of Key S an as mentioned above in Key
Interfa e se tion.
Common signals that ontrol Digit use PIO (PIO3-0,1,2,3 and 4)
Following pi ture shows the stru ture of operation. Display use Common Cathode Type. Display is a tivated by
re urrent signals with y le of 1~3ms.
3V3
E
Q1
B57
C
BR1
2.2K
COM0
2
1
C
D1 DX8
R2
33
Q2
B47
B
E
GND
R3
2.2K
SEG_A