Daewoo KR14E5/DTA-14V3VM Manual de usuario

Service Manual

ColorTelevision

CHASSIS : CP-185M

Model : KR14E5/DTA-14V3VM

KR20E5/DTA-20V3VM

KR21E5/DTA-21V3VM

Feb.2001

DAEWOO ELECTRONICS CO., LTD

http ://svc.dwe.co.kr

Specification

MONO

PAL-SECAM B/G-D/K

75ohm unbalanced

On screen Display

100 programmes

Frequency synthesiser tuning system

8 ohm

Off-air cannels, S-cable channels and hyperband

EURO-SCART:Audio /Video and Out, R/G/B in,

slow and fast wtching, SVHS in.

Audio-Video jack on front of cabinet in common

connection with EURO-SCART.

Headphone jack(3.5mm)on front of cabinet

R-40A10

14": 39W; 20": 42W; 21": 45W

S/M No. :TCP185MEF1

Version

TV Standard

Aerial Input

Power Consumption

Teletext system

Tuning System

Sound Output Power

Speaker

Channel coverage

Channel indication

Remote Control

Program selection

Visual screen size

Auxiliary Output Terminal

14" : 34cm

20" : 48cm

21" : 51cm

14V3/20V3/21V3

Sound system

2.5W(at 60% mod, 10% THD)

NONE

TABLE OF CONTENTS

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

SAFETY INSTRUCTION......................................................................................................................2

SPECIFICATIONS...............................................................................................................................3

1. 21 Pin EURO-SCART..................................................................................................................................3

2 Channel table...............................................................................................................................................4

CIRCUIT BLOCK DIAGRAM...............................................................................................................6

ALIGNMENT INSTRUCTIONS............................................................................................................7

1. Service mode...............................................................................................................................................7

2. Microcontroller configuration........................................................................................................................7

3. TV SET Alignment........................................................................................................................................7

SCHEMATIC DIAGRAM......................................................................................................................9

EXPLODED VIEW ...............................................................................................................................10

PRINTED CIRCUIT BOARD................................................................................................................13

SERVICE PARTS LIST........................................................................................................................14

1. The different parts list...................................................................................................................................19

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

SPECIFICATIONS

21Pin EURO-SCART

PIN SIGNAL DESCRIPTION MATCHING VALUE

1Audio Output Right 0.5 Vrms, Impedance < 1kΩ, (RF 54% Mod)

2Audio Input Right 0.5Vrms, Impedance > 10kΩ

3Audio Output Left 0.5 Vrms, Impedance < 1kΩ, (RF 54% Mod)

4Audio Earth

5Blue Earth

6Audio Input Left 0.5Vrms, Impedance > 10kΩ

7Blue Input 0.7Vpp + 0.1V, Inpedance 75Ω

8Slow Switching TV : 0 to 2V, AV : 4.5 to 12V, Impedance > 10kΩ

9Green Earth

10 N.C

11 Green Input 0.7Vpp + 0.1V, Impedance 75Ω

12 N.C

13 Red Earth

14 Blanking Earth

15 Red Input

Chroma Input 0.7Vpp + 0.1V, Impedance 75Ω

+ 3dB for a luminance signal of 1 Vpp

16 Fast Switching 0 to 0.4V : Logic “0”, 1 to 3V : Logic “1” , Impedance 75Ω

17 Video Out Earth

18 Video In Earth

19 Video Output 1 Vpp + 3dB, Impedance 75Ω

20 Video Input 1 Vpp + 3dB, Impedance 75Ω

21 Common Earth

Channel table

FREQUENCY TABLE CP-185M

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

CIRCUIT BLOCK DIAGRAM

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 ) suchthat the highest cathode cut-offvoltage measured onCRT 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 (set for Russia)

TU PAL - I/I

TA PAL/SECAM - B/G, SECAM -L/L’

Screen size Vcut-off

14”115 V

20”& 21”125 V

3 - Focus

- Adjust the Focus volume ( on FBT ) to have the best resolution on screen.

4 - Vertical geometry

- Adjust the Vertical Amplitude, Shift, S-Correction and Slope

to compensate for vertical distortion

5 - Horizontal picture centering

- Adjust H Shift to have the picture in the center of the screen.

7 - AGC

- Adjust the antenna signal level to 68 dB

2 for Daewoo tuner (63dB

1for Philips tuner).

- Set RF AGC to 0.

- Increase RF AGC level and stop when the level on pin 6 of I501 goes below 2.5 Vdc

ALIGNMENT INSTRUCTIONS

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