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S/M No. : TCP185MEF0



Service Manual
Color Television
CHASSIS : CP-185
Model : DTA-14C4TFF
DTA-20C4TF
DTA-14V1TF
DTA-21C6TFF




14 V1 14/20 C4 21 C6



SPECIFICATIONS
Version TF TK TU TA
TV standard PAL B/G PAL-SECAM B/G-D/K PAL I/I PAL B/G-SECAM L/L
Sound system mono

Power consumption 14";39W; 20";42W; 21";45W.

Sound Output Power 2.5W (at 60% mod, 10% THD)

Speaker 3W 8 ohm

10 pages memory FASTEXT (FLOF or TOP)
Teletext system
version with teletext only
Aerial input 75 ohm unbalanced
Channel coverage off-air cannels, S-cable channels and hyperband
Tuning system frequency synthesiser tuning system
14": 34 cm
Visual screen size 20": 48 cm
21": 51 cm

Channel indication On Screen Display

Program Selection 100 programmes

EURO-SCART : Audio / Video in and Out,
Aux. terminal
R/G/B in, Slow and Fast swtching, SVHS in.
Audio-Video jack on front of cabinet in common
connection with EURO-SCART.
Headphone jack (3.5mm) on fromt of cabinet

Remote Control Unit R - 40A01




DAEWOO ELECTRONICS CO., LTD.
http : //svc.dwe.co.kr Oct. 2000
TABLE OF CONTENTS
SAFETY INSTRUCTION .................................................................................................................. 2

SPECIFICATIONS ............................................................................................................................ 3
1. 21 Pin EURO-SCART ................................................................................................................... 3
2. Channel table ............................................................................................................................... 4
3. ATTS sorting method .................................................................................................................... 6

CIRCUIT BLOCK DIAGRAM ........................................................................................................... 8

ALIGNMENT INSTRUCTION ........................................................................................................... 9
1. Service mode ................................................................................................................................ 9
2. Microcontroller configuration ........................................................................................................ 9
3. TV set Alignment .......................................................................................................................... 9

SCHEMATIC DIAGRAM .................................................................................................................. 11

EXPLODED VIEW ............................................................................................................................ 11

PRINTED CIRCUIT BOARD ............................................................................................................ 12

SERVICE PARTS LIST .................................................................................................................... 13
1. The Different Parts List ................................................................................................................. 18

APPENDIX (" Appendix is provided only by internet [http://svc.dwe.co.kr] ")

FUNCTIONAL DESCRIPTION ......................................................................................................... 1

IC DESCRIPTION ............................................................................................................................. 16


1
SAFETY INSTRUCTION

WARNING : Only competent service personnel may carry out work involving the testing or repair of this equipment


X-RAY RADIATION PRECAUTION
1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high
voltage must not exceed the specified limit. The nominal value of the high voltage of this receiver is 22-23 kV (14" or
)
24-26 kV (20"- 21" at max beam current. The high voltage must not, under any circumstances, exceed 27.5 kV (14"
) ,
20" 29KV (21" Each time a receiver requires servicing, the high voltage should be checked. It is important to use an
), ).
accurate and reliable high voltage meter.

2. The only source of X-RAY Radiation in this TV receiver is the picture tube. For continued X-RAY RADIATION
protection, the replacement tube must be exactly the same type tube as specified in the parts list.




SAFETY PRECAUTION
1. Potentials of high voltage are present when this receiver is operating. Operation of the receiver outside the cabinet or
with the back cover removed involves a shock hazard from the receiver.
1)Servicing should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when
working on high voltage equipment.
2)Discharge the high potential of the picture tube before handling the tube. The picture tube is highly evacuated and if
broken, glass fragments will be violently expelled.
2. If any Fuse in this TV receiver is blown, replace it with the FUSE specified in the Replacement Parts List.
3. When replacing a high wattage resistor (oxide metal film resistor) in circuit board, keep the resistor body 10 mm away
from the circuit board.
4. Keep wires away from high voltage or high temperature components.
5. This receiver must operate under AC 230 volts, 5O Hz. NEVER connect to a DC supply of any other voltage or
frequency.




PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this equipment have special safety-related characteristics. These characteristics are
often passed unnoticed by a visual inspection and the X-RAY RADIATION protection afforded by them cannot necessarily be
obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these spe-
cial safety characteristics are identified in this manual and its supplements, electrical components having such features are
identified by designated symbol on the parts list. Before replacing any of these components, read the parts list in this manual
carefully. The use of substitutes replacement parts which do not have the same safety characteristics as specified in the parts
list may create X-RAY Radiation.




2
SPECIFICATIONS

Pin EURO-SCART :




3
SPECIFICATIONS




Channel table

FREQUENCY TABLE CP185

EUROP GB(IRE- EAST EUROP GB(IRE- EAST
CH FRANCE CH FRANCE
E CCIR LAND) OIRT E CCIR LAND) OIRT
C01 46.25 - 45.75 49.75 C40 623.25 623.25 623.25 623.25
C02 48.25 55.75 (L') 53.75 59.25 C41 631.25 631.25 631.25 631.25
C03 55.25 60.5 (L') 61.75 77.25 C42 639.25 639.25 639.25 639.25
C04 62.25 63.75 (L') 175.25 85.25 C43 647.25 647.25 647.25 647.25
C05 175.25 176.00 183.25 93.25 C44 655.25 655.25 655.25 655.25
C06 182.25 184.00 191.25 175.25 C45 663.25 663.25 663.25 663.25
C07 189.25 192.00 199.25 183.25 C46 671.25 671.25 671.25 671.25
C08 196.25 200.00 207.25 191.25 C47 679.25 679.25 679.25 679.25
C09 203.25 208.00 215.25 199.25 C48 687.25 687.25 687.25 687.25
C10 210.25 216.00 223.25 207.25 C49 695.25 695.25 695.25 695.25
C11 217.25 189.25 (LUX) 231.25 215.25 C50 703.25 703.25 703.25 703.25
C12 224.25 69.25 (L') 239.25 223.25 C51 711.25 711.25 711.25 711.25
C13 53.75 76.25 (L') 247.25 - C52 719.25 719.25 719.25 719.25
C14 - 83.25 (L') 49.75 - C53 727.25 727.25 727.25 727.25
C15 82.25 90.25 57.75 - C54 735.25 735.25 735.25 735.25
C16 - 97.25 65.75 - C55 743.25 743.25 743.25 743.25
C17 183.75 - 77.75 - C56 751.25 751.25 751.25 751.25
C18 192.25 - 85.75 - C57 759.25 759.25 759.25 759.25
C19 201.25 - - - C58 767.25 767.25 767.25 767.25
C20 - - - - C59 775.25 775.25 775.25 775.25
C21 471.25 471.25 471.25 471.25 C60 783.25 783.25 783.25 783.25
C22 479.25 479.25 479.25 479.25 C61 791.25 791.25 791.25 791.25
C23 487.25 487.25 487.25 487.25 C62 799.25 799.25 799.25 799.25
C24 495.25 495.25 495.25 495.25 C63 807.25 807.25 807.25 807.25
C25 503.25 503.25 503.25 503.25 C64 815.25 815.25 815.25 815.25
C26 511.25 511.25 511.25 511.25 C65 823.25 823.25 823.25 823.25
C27 519.25 519.25 519.25 519.25 C66 831.25 831.25 831.25 831.25
C28 527.25 527.25 527.25 527.25 C67 839.25 839.25 839.25 839.25
C29 535.25 535.25 535.25 535.25 C68 847.25 847.25 847.25 847.25
C30 543.25 543.25 543.25 543.25 C69 855.25 855.25 855.25 855.25
C31 551.25 551.25 551.25 551.25 C70 863.25 863.25 863.25 863.25
C32 559.25 559.25 559.25 559.25 C71 69.25 - - -
C33 567.25 567.25 567.25 567.25 C72 76.25 - - -
C34 575.25 575.25 575.25 575.25 C73 83.25 - - -
C35 583.25 583.25 583.25 583.25 C74 90.25 - - -
C36 591.25 591.25 591.25 591.25 C75 97.25 - - -
C37 599.25 599.25 599.25 599.25 C76 59.25 - - -
C38 607.25 607.25 607.25 607.25 C77 93.25 - - -
C39 615.25 615.25 615.25 615.25 S01 105.25 104.75 103.25 105.25


4
SPECIFICATIONS




EUROP GB(IRE- EAST EUROP GB(IRE- EAST
CH FRANCE CH FRANCE
E CCIR LAND) OIRT E CCIR LAND) OIRT
S02 112.25 116.75 111.25 112.25 S22 311.25 311.25 311.25 311.25
S03 119.25 128.75 119.25 119.25 S23 319.25 319.25 319.25 319.25
S04 126.25 140.75 127.25 126.25 S24 327.25 327.25 327.25 327.25
S05 133.25 152.75 135.25 133.25 S25 335.25 335.25 335.25 335.25
S06 140.25 164.75 143.25 140.25 S26 343.25 343.25 343.25 343.25
S07 147.25 176.75 151.25 147.25 S27 351.25 351.25 351.25 351.25
S08 154.25 188.75 159.25 154.25 S28 359.25 359.25 359.25 359.25
S09 161.25 200.75 167.25 161.25 S29 367.25 367.25 367.25 367.25
S10 168.25 212.75 - 168.25 S30 375.25 375.25 375.25 375.25
S11 231.25 224.75 - 231.25 S31 383.25 383.25 383.25 383.25
S12 238.25 236.75 - 238.25 S32 391.25 391.25 391.25 391.25
S13 245.25 248.75 255.25 245.25 S33 399.25 399.25 399.25 399.25
S14 252.25 260.75 263.25 252.25 S34 407.25 407.25 407.25 407.25
S15 259.25 272.75 271.25 259.25 S35 415.25 415.25 415.25 415.25
S16 266.25 284.75 279.25 266.25 S36 423.25 423.25 423.25 423.25
S17 273.25 296.75 287.25 273.25 S37 431.25 431.25 431.25 431.25
S18 280.25 136.00 295.25 280.25 S38 439.25 439.25 439.25 439.25
S19 287.25 160.00 303.25 287.25 S39 447.25 447.25 447.25 447.25
S20 294.25 - - 294.25 S40 455.25 455.25 455.25 455.25
S21 303.25 303.25 - 303.25 S41 463.25 463.25 463.25 463.25




5
SPECIFICATIONS




ATSS sorting method

The TV set sweeps all the TV bands from beginning of VHF to the end of UHF. The TV controlling software for each program
checks if a VPS CNI code is transmitted. If no VPS CNI code is found, the system checks if a CNI code is transmitted in the tele-
text lines ( Packet 8/30 format 1 ). If such a code ( VPS or teletext ) is found and if this code is in the ATSS list, the program is
automatically named.
The programs found are then sorted into 4 groups :

Group I : Contains all the programs from the selected country and named by the TV controlling software. Within this group the
sorting order is fixed by the ATSS list.
Group II : Contains all the programs with a strong signal strength which are not listed in group I.
Group III : 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.

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).

The sorting order within group II, III, and IV is based on the channel frequency. The program with the lowest frequency is allo-
cated the first rank in its group, and so forth until the last program of the group which has the highest frequency.



Program number Group Skip Program number Group Skip
1 1
2 Group I ... Group II
... m
n m+1
n+1 ... Group III
... Group II p
m p+1
m+1 ... Group IV
... Group III q
p q+1
p+1 ... not used 4
... Group IV 99
q 0
q+1
... not used 4 Special case : Country selection = Others
99
0


Note
For TV versions without teletext, and if the controlling software is unable to catch the station name,
Group I will remain empty.




6
SPECIFICATIONS



Special case : France
If France is selected the TV controlling software firstly sweeps all the TV bands with France system selected (positive video
modulation) and secondly with Europe system selected (negative video modulation).

Special case : Switzerland
If Switzerland is selected the TV controlling software firstly sweeps all the TV bands with Europe system selected (negative
video modulation) and secondly 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 pro-
grams 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