Daewoo DSD-9255M Manual de usuario
S/M No. : DSD9255M02
✔ 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).
DAEWOO ELECTRONICS Corp.
June. 2004
http : //svc.dwe.co.kr
Service Manual
Digital Satellite Receiver
MODEL :
DSD-9255M/DSD-9255E
DSD-9256M/DSD-9256E
GENERAL INFORMATION............................................................................................2
CIRCUIT OPERATION MANUAL .............................................................................................7
FIXING ERRORS....................................................................................................................28
BOM LIST ...............................................................................................................................33
SCHEMATIC DIAGRAM .........................................................................................................39
PARTS PLACEMENT(ARRANGEMENT) ..............................................................................45
1
CONTENTS
2
GENERAL INFORMATION
Digital Satellite Receiver is easy to use, and allows you to watch digital programs broadcasted via satellite.
This instruction manual will guide you through the initial installation of your receiver.
It also describes how to take full advantage of a wide range of features that are easily accessible.
Read this instruction manual carefully before installing your receiver.
MAIN FEATURES
•Small size and cost-effective
•High quality Digital Video & Audio
•Fully DVB compliant
•User friendly and easy-to use menu system
•Various channel editing function, on Channel Management. (favorite, move, lock, rename, delete and sort)
•User programmable Satellite & Transponder information
•Automatic search for newly added transponder (NIT search)
•Stores up to 4000 channels
•Support software upgrading through Serial port
•Plug-and-play data transfer system (DSR to DSR)
•Individual channel volume saving function
•Timer function
•Automatic reserved channel moving system
•Electronic Program Guide (EPG)
•Teletext function support
•Antenna Positioning Help features
•Support RGB and CVBS video output
•SCPC/MCPC receivable from C/Ku Band
•Multi LNB control by DiSEqC 1.0 and 22 KHz switching
•Motorized system control by DiSEqC 1.2* and USALS.
•256 color On-Screen-Display
•SatcoDX Download
* DiSEqC
TM
is a trademark of EUTELSAT.
** USALS
TM
is a trademark of Stab.
3
GENERAL INFORMATION
FOR YOUR SAFETY
•Allow clear space of more than 10 cm from the top, back and both sides for sufficient ventilation.
•Do not cover the Digital Satellite Receiver nor place it on a unit that emits heat.
•Use a soft cloth and a mild solution of washing liquid to clean the casing
•Do not connect or modify cables when Digital Satellite Receiver is plugged in.
•Do not remove the cover.
•Do not allow the unit to be exposed to extreme heat, cold or humidity.
•Never allow liquid spray or other materials to come into contact with the inside of the Digital Satellite Receiver.
•This Unit 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 unplug the mains.
•The apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such as vaseds,
shall be placed on the apparatus.
UNPACKING
1 x Remote Control Unit (RCU) 1 x RCA Cable
2 x AAA battery (option)
1 x Instruction Manual 1 x DSR
GENERAL OPERATION
Throughout this manual you will notice that the operation of your Digital Satellite Receiver is based on a series of user
friendly On Screen Display menus.
These menus will help you to get the most out of your Digital Satellite Receiver And guide you through installation.
All function can be carried out by using the keys on the remote control.
The Digital Satellite Receiver is easy to use, and adaptable for future upgrades.
Note that new software may change the functionality.
If you have difficulties with the operation of your Digital Satellite Receiver, please refer to the relevant section of this
manual or call your dealer or customer service center for help.
4
GENERAL INFORMATION
Remote Control
Switches between the operational mode
and Stand-by mode of the receiver
Switches between TV and AV mode
Used for various functions on some menu
Displays the menu on the screen
Change channel, or moves to the next
higher or lower item in the menu
Adjusts the volume, or moves to the left
or right item in the menu
Executes the selected item in the menu
screen, or enters the Desired value in any
input mode
Returns to the previous menu or exit
window
Moves up/down a page in the channel list
Executes sort or deletion of satellite
Pauses/Resumes the screen picture
Switches between TV and Radio mode
Switches to the UHF Tuning mode
Recall to the previous channel
Shows information of the current channel
Calls up the EPG (Electronic Program
Guide)
Enter the number in the required menu
item or select a Channel number to watch
Mutes the sound
Change various audio setting
* Master KEY : 1250
5
GENERAL INFORMATION
FRONT PANEL
REAR PANEL
To switch ON the receiver or
to switch standby. To access the programming menus.
To display channel list in viewing mode
or to enter the programming
parameters.
100~240V Power Input
(Optional function)
RF Modulator
(Optional function)
Connect to TV and VCR using a SCART cable
Optic jack
(Optional function)
Connect Video to a TV using RCA jack, Connect Audio L/R to TV or Audio device
Serial : Connect to a PC for
S/W upgrade
Loopthrough
LNB IN : Connect to
Satellite Antenna
To move the cursor (highlighted) or to change
the volume.
To change services up/down
To switch ON the receiver or
to switch standby. To access the programming menus.
To change services up/down
To move the cursor
(highlighted) or to change
the volume.
To display channel list in viewing
mode or to enter the programming
parameters.
6
GENERAL INFORMATION
Product Specification
TRANSMISSION STANDARDS
LNB/TUNER INPUT
SYSTEM RESOURCES
VIDEO DECODER
AUDIO DECODER
POWER SUPPLY
REAR PANEL INTERFACES
REMOCON TRANSMITTER
DVB, MPEG2
Connector IEC 169-24, Female-type
Input Frequency 950 ~ 2150MHz
Demodulation 2 Msps ~ 35Msps
Code rate QPSK
Max Current 400mA
Supply Voltage 13V/18V
DiSEqC 1.0, 1.2, USALS
Processor 32bit, 81 MHz
RAM / ROM 8 MB / 2 MB
Video Standard ISO/IEC 13818-2(MPEG-2)
Profile & Level Main Profile@Main Level
Resolution 720 x 576 pixels for PAL
Aspect ratio 4:3 or 16:9
Audio format MPEG Layer I and II
Channel Mode Stereo, Mono Mode
Audio Signal Sample Rate 32, 44.1, 48 Ksps
Audio Signal bandwidth 15Hz ~ 20KHz
Bit Resolution 24 bits PCM for the audio sample
Type SMPS
Voltage & Frequency 100–240V~, 50/60Hz
Power Consumption 25W
Video/Audio Output RCA & Scart Jack
Video Input Scart Jack
Optional Video Input/Output : RF modulator
Audio Output : RF modulator & S/PDIF
Data In/Out Serial Jack (RS232)
Satellite in IEC 169-24, Female, F-Type
Type R-40D(AAA)
Operating Distance Straight : 8m, Pointing Angle (30°) : 7m
Operating Life Time 200,000 Times Operating Without Load
Batteries 2 x 1.5V AAA
7
CIRCUIT OPERATION MANUAL
1. Block Diagram
DSD-9230E BLOCK DIAGRAM
DSD- 9280M Block Diagram
CPU
(STi5518) AUDIO D/A
FLASH ROM
(16Mbit)
SDRAM
(64Mbit)
Television
Satellite dish
TUNER
A/D
6bit
DUAL
LINK IC
QPSK
FEC
TV
SCART
RCA
RS-232
PORT
VIDEO
AUDIO
FRONT
SMPS
+5V
+3.3V
+12V
+30V
+22V
+17V
I
2
C BUS
POSITIONER
& SKEW
DSD-9255M Block Diagram
8
CIRCUIT OPERATION MANUAL
2. Interface
(1) Remote controller Interface
"POWER"
CUSTOM CODE:E8H
DATA CODE
:15H
KEY NO
KEY NAME
CUSTOM CODE(H)
DATA CODE(H)
CUSTOM CODE(B)
DATA CODE(B)
K01 1
E8 H 01 H 0001 0111 1000 0000
K02 2
E8 H 02 H 0001 0111 0100 0000
K03 3
E8 H 03 H 0001 0111 1100 0000
K04 4
E8 H 04 H 0001 0111 0010 0000
K05 5
E8 H 05 H 0001 0111 1010 0000
K06 6
E8 H 06 H 0001 0111 0110 0000
K07 7
E8 H 07 H 0001 0111 1110 0000
K08 8
E8 H 08 H 0001 0111 0001 0000
K09 MENU
E8 H 22 H 0001 0111 0100 0100
K10 EXIT
E8 H 23 H 0001 0111 1100 0100
K11 (VOL )
E8 H 13 H 0001 0111 1100 1000
K12 (VOL )
E8 H 14 H 0001 0111 0010 1000
K13
E8 H 15 H 0001 0111 1010 1000
• KEY FUNCTION TABLE
9
CIRCUIT OPERATING MANUAL
KEY NO KEY NAME CUSTOM CODE(H) DATA CODE(H) CUSTOM CODE(B) DATA CODE(B)
K14 INFO E8 H 21 H 0001 0111 1000 0100
K15 PR E8 H 17 H 0001 0111 1110 1000
K16 PR E8 H 18 H 0001 0111 0001 1000
K17 0 E8 H 00 H 0001 0111 0000 0000
K18 9 E8 H 09 H 0001 0111 1001 0000
K19 E8 H 12 H 0001 0111 0100 1000
K20 OK E8 H 11 H 0001 0111 1000 1000
K23 EPG E8 H 24 H 0001 0111 0010 0100
K28 (YELLOW)
E8 H 29 H 0001 0111 1001 0100
K33 (RED) E8 H 27 H 0001 0111 1110 0100
K34 (GREEN) E8 H 28 H 0001 0111 0001 0100
K35 RCL E8 H 20 H 0001 0111 0000 01 00
K36 (BLUE) E8 H 2A H 0001 0111 0101 0100
K38 TV/RADIO E8 H 0A H 0001 0111 0101 0000
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