Daewoo DTA - 14C4TFF Bedienungsanleitung

Service Manual

Chassis : CP-185

S/M No. : TCP185MEF0

http : //svc.dwe.co.kr JUN. 2000

DAEWOO ELECTRONICS CO., LTD.

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

Teletext system

10 pages memory FASTEXT (FLOF or TOP)

– version with teletext only

Aerial input

75 ohm unbalanced

Channel coverage

Off-air channels, S-cable channels and hyperband

Tuning system

frequency synthesiser tuning system

Visual screen size

14 ” : 34 cm

20 ” : 48 cm

21 ” : 51 cm

Channel indication

On Screen Display

Program Selection

100 programmes

Aux. terminal

EURO-SCART : Audio / Video In and Out,

R/G/B In, Slow and Fast switching, SVHS In.

Audio-Video Jack on front of cabinet in common

connection with EURO-SCART.

Headphone jack (3.5 mm) on front of cabinet

Remote Control Unit

R-40A01

Colour Television

Model : DTA - 14C4TFF

DTA - 20C4TF

DTA - 14V1TF

DTA - 21C6TFF

RTV servis Horvat

Tel: ++385-31-856-637

Tel/fax: ++385-31-856-139

Mob: 098-788-319

www.rtv-horvat-dj.hr

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

SAFETY INSTRUCTION

WARNING :

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

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.

X-RAY RADIATION 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.

SAFETY PRECAUTION

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.

PRODUCT SAFETY NOTICE

Pin EURO-SCART :

SPECIFICATIONS

Channel table

FREQUENCY TABLE CP185

CH EUROP

E CCIR FRANCE GB(IRE-

LAND) EAST

OIRT

C01 46.25 - 45.75 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

SPECIFICATIONS

CH EUROP

E CCIR FRANCE GB(IRE-

LAND) EAST

OIRT

C40 623.25 623.25 623.25 623.25

C41 631.25 631.25 631.25 631.25

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

CH EUROP

E CCIR FRANCE GB(IRE-

LAND) EAST

OIRT

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

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

SPECIFICATIONS

CH EUROP

E CCIR FRANCE GB(IRE-

LAND) EAST

OIRT

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

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

checksifaVPS CNIcode istransmitted. Ifno VPSCNI codeis found,the systemchecks ifa CNIcode istransmitted inthe 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

2 Group I

...

n+1

... Group II

m+1

... Group III

p+1

... Group IV

q+1

... not used 4

Special case :

Country selection = Others

Program number Group Skip

... Group II

m+1

... Group III

p+1

... Group IV

q+1

... not used 4

For TV versions without teletext, and if the controlling software is unable to catch the station name,

Group I will remain empty.

Note

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 :

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 ormore“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 – system = GB).

example A : 1 - BBC1, 2 - BBC2, 3 - ITV, 4 - -----, 5 - CH5, 6 - NEWS, ...

example B ( if 2 BBC1 found ) : 1 - BBC1, 2 - BBC1, 3 - BBC2, 4 - ITV, 5 - -----, 6 - CH5, 7 - NEWS, ...

Version TF TK TU TA

ATSS countries

Germany, Belgium,

Spain, Italy,

Austria, Denmark,

Finland,

Netherlands, Norway,

Sweden,

Others

Germany, Belgium,

Spain, Italy,

Austria, Denmark,

Finland,

Netherlands,

Norway, Sweden,

Poland, Hungary,

Czech Rep, Others

GB, Ireland, Others France,

Switzerland,

Germany, Belgium,

Spain, Italy,

Austria, Denmark,

Finland,

Netherlands,

Norway, Sweden,

Others

SPECIFICATIONS

CIRCUIT BLOCK DIAGRAM

To speakers /

head phones

IIC BUS

IF IF = 38.9 MHz (All standard except L')

= 33.9 MHz (L')

Video IFSF1 SF2

Audio IF

#4 - I501

#23

#24 #28

#29

Video processor

#38 #35 #42

#40#43

#46

#47

#48

#51

#52

#53

I501

Micro controller

#2 #3

video In video

out

QSS

out ext. video in

Trap 5.5MHz

SIF (5.5MHz for system B/G)

Audio out

SCART 1

Audio in

SCART 1

Audio in

SCART 2

#28

#29

#49

#50 #52

#53 #36

#37 #58

Sound processor I601

Base bond signal

I602

Audio

Amplifier

Video in

SCART 1

SCART 2

Switching

circuit

switch control

from #8-I501

and #8 SCART 1

To CRT board RGB out

ext RGB in

chroma in

ALIGNMENT INSTRUCTIONS

Microcontroller configuration : Service mode

To switch the TV set into service mode please see instruction below.

1 - Select pr. number 91

2 - Adjust sharpness to minimum and exit all menu.

3 - Quickly press the key sequence : RED - GREEN - menu

To exit SERVICE menu press menu key or Std By key.

In Service Mode press “OK”to stop the microcontroller i.e. the I2C bus is free and the set can be controlled by external equipment.

Press “OK”again to allow the microcontroller to control the set again

Microcontroller configuration :

Tuner Option

System Option

TV set Alignment

1 - G2 alignment

- Set TV in NORMAL I mode

- TV in AV mode without video signal ? Black screen.

- TV preset with WP Red, WP Green and WP Blue equal to 32.

- TV preset with Black R, Black G equal to 8.

-Adjust screen volume ( on FBT) such that the highest cathode cut-off voltage measuredon CRT board, is Vcut-off ± 5V.

2 - White balance

- Select a dark picture and adjust Black G and Black R to the desired colour temperature.

- Select a bright picture and adjust WP Red, WP Green, WP Blue to the desired colour temperature.

Option Tuner maker

DW DAEWOO / SAMSUNG

PH1 PHILIPS ( Video processor AGC )

PH2 PHILIPS (tuner internal AGC )

Option System

TF PAL – B/G

TK PAL – SECAM B/G-D/K

TU PAL I/I

TA PAL – SECAM B/G-L/L’

Screen size Vcut-off

14” 115 V

20”& 21” 125 V

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