Daewoo DTP-28B1 User manual

Service Manual
S/M No. : TWP895BEF0
DAEWOO ELECTRONICS CO., LTD
http : //svc.dwe.co.kr AUG. 2001
Colour Television
CHASSIS: WP-895
MODEL: DTP-28B1

- 2 -
1- Main Features
1-1 Specifications
TV standard PAL - SECAM B/G D/K, PAL I/I, SECAM L/L’
Sound system NICAM B/G, I, D/K, L,
FM 2Carrier B/G, D/K
Power consumption
28” 4:3, FST : 69 W approx.
Sound Output Power
28”: 7W x 2 (at 1kHz, 60% mod, 10%THD)
Speaker
28” : 12W 8 ohm x2
Teletext system 10 pages memory FASTEXT (FLOF or TOP)
Aerial input 75 ohm unbalanced
Channel coverageOff-air channels, S-cable channels and hyperband
Tuning system frequency synthesiser tuning system
Visual screen
28” : 66 cm
Channel indication On Screen Display
Program Selection 100 programmes
Aux. terminal EURO-SCART 1 : Audio / Video In and Out, R/G/B In, Slow and
Fast switching.
EURO-SCART 2 : Audio / Video In and Out, SVHS In.
AV3 : Audio-Video Jack on front of cabinet.
Headphone jack (3.5 mm) on front of cabinet
SVHS3 (option) : Jack on front of cabinet - sound input common with AV3.
Remote Control Unit R-46G22
.
28” 16:9, WIDE : 69 W approx.
Monitor Out(option)

CHASSIS NAME WP895
VCT VERSION 3834
SOFTWARE VERSION A
REMOTE CONTROL R46G22
PCB SERIAL NUMBER 4859805093
TUBE 16:09
SVHS3
"PICTURE IMPROVE-
MENTS, COMB FILTER,
HORIZONTAL SCALER"
TELETEXT SPLIT SCREEN
FORMATS AVAILABLE IN
VIDEO MODE
AUTO / 4:3 / 14:9 / ZOOM 14:9 /
ZOOM 16:9 / FULL SCREEN
AV2 MONITOR OUTPUT
MSP VERSION (OPTION) 3410 3411
SOUND EFFECTS OFF / SPATIAL OFF / SPATIAL
/ PANORAMA /
VIRTUAL
DOLBY
GRAPHIC EQUALIZER
AV3 AUDIO INPUT DEDICATED DEDICATED
TELETEXT PAGE MEMORY 10 PAGE
TOP TELETEXT AVAILABLE : SELECTABLE IN FACTORY/SERVICE MODE BY OPTION BITS
FLOF TELETEXT AVAILABLE : SELECTABLE IN FACTORY/SERVICE MODE BY OPTION BITS
TEXT CHARACTER
SUPPORT
"Pan-European Latin, Cyrillic, Greek"
OSD LANGUAGES "English, French, German, Italian, Spanish, Dutch, Danish, Finnish, Norwegian, Swedish, Greek, Polish, Hungarian, Czech, Slovakian, Roma-
nian, Russian."
TUNER OPTIONS "Philips, ALPS"
Specification matrix
3

4
21 Pin EURO-SCART 1 :
Pin Signal Description Matching value
1Audio Output Right 0.5 Vrms, Impedance < 1 , ( RF 54% Mod )
2Audio Input Right 0.5 Vrms, Impedance > 10
3Audio Output Left 0.5 Vrms, Impedance < 1 , ( RF 54% Mod )
4Audio Earth
5Blue Earth
6Audio Input Left 0.5 Vrms, Impedance > 10
7Blue Input 0.7 Vpp ±0.1V, Impedance 75
8Slow Switching TV : 0 to 2V, AV 16/9 : 4.5 to 7V, AV 4/3 : 9.5 to 12V ,
Impedance > 10
9Green Earth
10 N.C.
11Green Input 0.7 Vpp 0.1V, Impedance 75
12 N.C.
13Red Earth
14Blanking Earth
15Red Input 0.7 Vpp 0.1V, Impedance 75
16Fast Switching 0 to 0.4V : Logic “0”, 1 to 3V : Logic “1”, Impedance 75
17Video Out Earth
18Video In Earth
19Video Output 1 Vpp 3dB, Impedance 75
20Video Input 1 Vpp 3dB, Impedance 75
21Common Earth
21 Pin EURO-SCART 2 :
Pin Signal Description Matching value
1Audio Output Right 0.5 Vrms, Impedance < 1 , ( RF 54% Mod ) - Not available for cp885
2Audio Input Right 0.5 Vrms, Impedance > 10
3Audio Output Left 0.5 Vrms, Impedance < 1 , ( RF 54% Mod ) - Not available for cp885
4Audio Earth
5Earth
6Audio Input Left 0.5 Vrms, Impedance > 10
7N.C.
8Slow Switching TV: 0 to 2V, AV 16:9: 4.5V to 7V, AV 4:3: 9.5 to 12V
9N.C.
10 N.C.
11 N.C.
12 N.C.
13Earth
14Earth
15Chroma Input 3dB for a luminance signal of 1 Vpp
16 N.C.
17Earth
18Video In Earth

5
19Video Output 1 Vpp 3dB, Impedance 75 ( Monitor output ) - Not available for cp885
20Video Input,Y In. 1Vpp 3dB, Impedance 75
21Common Earth

6
CH EUROPE CCIR FRANCE GB(IRELAND) EAST OIRT
C01 46.25 - 47.75 49.75
C02 48.25 55.75 (L’) 53.75 59.25
C03 55.25 60.5 (L’) 61.75 77.25
C04 62.25 63.75 (L’) 175.25 85.25
C05 175.25 176.00 183.25 93.25
C06 182.25 184.00 191.25 175.25
C07 189.25 192.00 199.25 183.25
C08 196.25 200.00 207.25 191.25
C09 203.25 208.00 215.25 199.25
C10 210.25 216.00 223.25 207.25
C11 217.25 189.25 (LUX) 231.25 215.25
C12 224.25 69.25 (L’) 239.25 223.25
C13 53.75 76.25 (L’) 247.25 -
C14 - 83.25 (L’) 49.75 -
C15 82.25 90.25 57.75 -
C16 - 97.25 65.75 -
C17 183.75 - 77.75 -
C18 192.25 - 85.75 -
C19 201.25 - - -
C20 -- - -
C21 471.25 471.25 471.25 471.25
C22 479.25 479.25 479.25 479.25
C23 487.25 487.25 487.25 487.25
C24 495.25 495.25 495.25 495.25
C25 503.25 503.25 503.25 503.25
C26 511.25 511.25 511.25 511.25
C27 519.25 519.25 519.25 519.25
C28 527.25 527.25 527.25 527.25
C29 535.25 535.25 535.25 535.25
C30 543.25 543.25 543.25 543.25
C31 551.25 551.25 551.25 551.25
C32 559.25 559.25 559.25 559.25
C33 567.25 567.25 567.25 567.25
C34 575.25 575.25 575.25 575.25
C35 583.25 583.25 583.25 583.25
C36 591.25 591.25 591.25 591.25
C37 599.25 599.25 599.25 599.25
C38 607.25 607.25 607.25 607.25
C39 615.25 615.25 615.25 615.25
C40 623.25 623.25 623.25 623.25
C41 631.25 631.25 631.25 631.25
1-2 Channel table
FREQUENCY TABLE

7
CH EUROPE CCIR FRANCE GB(IRELAND) EAST OIRT
C42 639.25 639.25 639.25 639.25
C43 647.25 647.25 647.25 647.25
C44 655.25 655.25 655.25 655.25
C45 663.25 663.25 663.25 663.25
C46 671.25 671.25 671.25 671.25
C47 679.25 679.25 679.25 679.25
C48 687.25 687.25 687.25 687.25
C49 695.25 695.25 695.25 695.25
C50 703.25 703.25 703.25 703.25
C51 711.25 711.25 711.25 711.25
C52 719.25 719.25 719.25 719.25
C53 727.25 727.25 727.25 727.25
C54 735.25 735.25 735.25 735.25
C55 743.25 743.25 743.25 743.25
C56 751.25 751.25 751.25 751.25
C57 759.25 759.25 759.25 759.25
C58 767.25 767.25 767.25 767.25
C59 775.25 775.25 775.25 775.25
C60 783.25 783.25 783.25 783.25
C61 791.25 791.25 791.25 791.25
C62 799.25 799.25 799.25 799.25
C63 807.25 807.25 807.25 807.25
C64 815.25 815.25 815.25 815.25
C65 823.25 823.25 823.25 823.25
C66 831.25 831.25 831.25 831.25
C67 839.25 839.25 839.25 839.25
C68 847.25 847.25 847.25 847.25
C69 855.25 855.25 855.25 855.25
C70 863.25 863.25 863.25 863.25
C71 69.25 - - -
C72 76.25 - - -
C73 83.25 - - -
C74 90.25 - - -
C75 97.25 - - -
C76 59.25 - - -
C77 93.25 - - -
S01 105.25 104.75 103.25 105.25
S02 112.25 116.75 111.25 112.25
S03 119.25 128.75 119.25 119.25
S04 126.25 140.75 127.25 126.25
S05 133.25 152.75 135.25 133.25
S06 140.25 164.75 143.25 140.25
S07 147.25 176.75 151.25 147.25
S08 154.25 188.75 159.25 154.25
S09 161.25 200.75 167.25 161.25

8
CH EUROPE CCIR FRANCE GB(IRELAND) EAST OIRT
S10 168.25 212.75 - 168.25
S11 231.25 224.75 - 231.25
S12 238.25 236.75 - 238.25
S13 245.25 248.75 255.25 245.25
S14 252.25 260.75 263.25 252.25
S15 259.25 272.75 271.25 259.25
S16 266.25 284.75 279.25 266.25
S17 273.25 296.75 287.25 273.25
S18 280.25 136.00 295.25 280.25
S19 287.25 160.00 303.25 287.25
S20 294.25 - - 294.25
S21 303.25 303.25 - 303.25
S22 311.25 311.25 311.25 311.25
S23 319.25 319.25 319.25 319.25
S24 327.25 327.25 327.25 327.25
S25 335.25 335.25 335.25 335.25
S26 343.25 343.25 343.25 343.25
S27 351.25 351.25 351.25 351.25
S28 359.25 359.25 359.25 359.25
S29 367.25 367.25 367.25 367.25
S30 375.25 375.25 375.25 375.25
S31 383.25 383.25 383.25 383.25
S32 391.25 391.25 391.25 391.25
S33 399.25 399.25 399.25 399.25
S34 407.25 407.25 407.25 407.25
S35 415.25 415.25 415.25 415.25
S36 423.25 423.25 423.25 423.25
S37 431.25 431.25 431.25 431.25
S38 439.25 439.25 439.25 439.25
S39 447.25 447.25 447.25 447.25
S40 455.25 455.25 455.25 455.25
S41 463.25 463.25 463.25 463.25

9
1-3 ATSS sorting method
The TV set sweeps all the TV bands from beginning of VHF to end of UHF.The TV controlling software for each
program checks if a VPS CNI code is transmitted ( this system exists for German, Swiss and Austrian transmissions).
If no VPS CNI code is found, then the system check if a CNI code is transmitted as part of the teletext transmission
( Packet 8/30 format 1 ). If such a code ( VPS or teletext ) is found and if this code is in theATSS list, the program is
automatically named.
If the transmission does not haveVPS CNI, and no teletext service is available, then there is no possibility of the
program being automatically named.
The programs found are then sorted in 4 groups :
Group I : It contains all the programs from the selected country and named by the TV controlling software. Within this
group the sorting order is fixed bythe ATSS list.
Group II : It contains all the programs with a strong signal strength which are not listed in group I.
Group III : It contains all the programs with a weak signal strength which are not listed in group I.
Group IV : If two or more programs with the same code are found, only the strongest ( or if they have the same level
the one with the lowest frequency) is listed in group I, II or III. The others are listed in group IV.
Program
number
1
2Group I
...
n
n+1
... Group II
m
m+1
... Group III
p
p+1
... Group IV
q
q+1
.... not used
99
0
Group Skip Program
number
1
... Group II
m
m+1
... Group III
p
p+1
... Group IV
q
q+1
.... not used
99
0
Group Skip
Special case : Country selection = Others
Special case : France
Note :If two programs with the same name but a different code are found these two programs are listed in
group I, II or III ( e.g. Regional program SW3 in Germany ).

- 10 -
The sorting order within group II, III, and IV is based on the channel frequency.The Program with the lowest
frequency is allocated the first rank in its group, and so forth until the last program of the group which has the
highest frequency.
If France is selected, the TV controlling software first sweeps all TV bands with France system selected
( positive video modulation) and the a second time with Europe system selected ( negative video modulation).
Special case : Switzerland
If Switzerland is selected the TV controlling software first sweeps all TV bands with Europe system selected
(negative video modulation) and then a second time with France system selected ( positive video modulation).
Special case : GB
Note for satellite receiver users : Before starting ATSS turn On your satellite receiver and tune “ SKY NEWS ”.
If GB is selected the TV controlling software seeks for programs only in UHF ( C21 to C70 ).
The sorting order is :
1 - BBC1
2 - BBC2
3 - ITV
4 - CH4
5 - CH5
6 - NEWS
If two or more “ identical” programs ( same name but different code e.g. BBC1 and BBC1 Scotland ) are found
the following programs in the list will be shifted up. (1 - BBC1, 2 - BBC1, 3 - BBC2, 4 -ITV, 5 - CH4, 6 - CH5,
7 - NEWS, ..)
If one of the program above is not found, the associated program number remains empty
( freq.=467.25 Mhz - Skip selected - no name - system=GB).
example A : 1 - BBC1, 2 - BBC2, 3 - ITV, 4 - ----, 5 - CH5, 6 - NEW S, ...
example B ( if 2 BBC1 found ) : 1 - BBC1, 2 - BBC1, 3 - BBC2, 4 - IT V, 5 - -----, 6 - CH5, 7 -NEWS, ...
Special case : France