WP-811N_chassis.pdf

S/M No: TWP811MEF0

Service Manual

Colour Television 66 Cm WIDE STEREO

CHASSIS : WP-811N

MODEL :DTW - 28W2F

DTW - 2810F

Specifications

CRT

SYSTEM

MAIN VOLTAGE

28" : W66ECK001X44

PAL / SECAM-B/K, PAL-I/I', SECAM-L/L', NTSC-3.58/4.43 (Play back)

230V AC, 50Hz

Stand-by mode : 2.0 Watts

Normal operating mode : 100 Watts

10 + 10 Watts, 10% THD at RF 60% mod. (1 kHz )

12W 8 ohm x 2 EA

POWER CONSUMPTION

SOUND OUTPUT

SPEAKER

ANTENNA IMPEDANCE

75 ohm unbalanced input ( Din Standard )

TUNING SYSTEM

Frequency Systhesize (FS) Tuning System

TUNER

DT5-BF14D

NUMBER OF PROGRAM

100 program

21 pin EURO-SCART jack (AV input, TV output, RGB input)

AUX. TERMINAL

21 pin EURO-SCART jack (AV input, S-VHS input)

RCA type AV input jack

Headphone jack (3.5 mm )

JACK AUDIO TERMINAL (AUDIO OUT L, R)

R-22D05(or R-23D05) with 2 "AAA" type batteries

TOP(5 Page memory) & FLOF(7 Page memory)

REMOTE CONTROL

TELETEXT

- West option : English, German/Dutch/Flemish, French, Italian, Spanish/Portuguese,

Swedish/Finnish/Danish, Hungarian, Rumanian, Turkish

- East option : Polish, Czech/Slovak, Rumanian, Servo-croat, German/Dutch/Flemish,

French, Estonian, Lettish

- West : English, German, French, Italian, Spanish, Nethelands, Swedish

- East : English, Russian, Polish, Rumanian, Czech, Hungarian

OSD LANGUAGE

DAEWOO ELECTRONICS CO., LTD

http://svc.dwe.co.kr

DEC.2000

TABLE OF CONTENTS

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

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

CIRCUIT BLOCK DIAGRAM ........................................................................................................... 4

ALIGNMENT INSTRUCTION ........................................................................................................... 5

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

EXPLODED VIEW ............................................................................................................................ 13

PRINTED CIRCUIT BOARD ............................................................................................................ 15

SERVICE PARTS LIST .................................................................................................................... 16

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

IC DESCRIPTION ............................................................................................................................. 1

IC DC VOLTAGE CHARTS .............................................................................................................. 18

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 prodece potentially haz-

ardous 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

25-27kv at max beam current. The high voltage must

not, under any circumstances, exceed 30kv.

Each time a receiver require servicing, the high volt-

age should be checked. It is imprortant to use an accu-

rate 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 board removed involves a

shock hazard from the receiver.

1) Servicing should not be attempted by anyone who is

not thoroughly familiar with the precautions neces-

sary when working on high-voltage equipment.

2) Dischange 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 10mm

away from circuit board.

4. Keep wires away from high voltage or high tempera-

ture components.

5. This receiver must operate under AC230 volts, 50Hz.

NEVER connect to DC supply or any other power or

frequency.

PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in this have

special safety-related characteristics. These charac-

teristics 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 volt-

age, wattage, etc. Replacement parts which have

these special safety characteristics are identified in

this manual and its supplements, electrical compo-

nents having such features are identified designated

symbol on the parts list.

Before replacing any of these components, read the

parts list in this manual carefully. The use of substitute

replacement parts which do not have the same safety

characterisitics as specifide in the parts list may create

X-RAY Radiation.

SPECIFICATIONS

Signal Designation

Matching Value

Audio Out (linked with 3)

0.5Vrms, Imp < 1 k (RF 60% MOD)

Audio In (linked with 6)

0.5Vrms, Imp < 10 k

Audio Out (linked with 1)

0.5Vrms, Imp < 1 k (RF 60% MOD)

Audio Earth

Blue Earth

Audio in (linked with 2)

0.5Vrms, Imp < 10 k (RF 60% MOD)

Blue in

0.7Vpp 2dB, Imp 75

Slow (Function) Switching

TV : 0-2V, PERI : 9.5 - 12V, Imp > 10 k

Green Earth

Green In

0.7Vpp 2dB, Imp 75

Red Earth

Rapid(Blanking) Switching Earth

Red In, C In

0.7Vpp 2dB, Imp 75

Rapid(Blanking) switching

Logic 0 : 0 - 0.4V, Logic 1 : 1 - 3V, Imp 75

Video Earth

Rapid Blanking Earth

Video Out

1Vpp 2dB, Imp 75

Video In, Y In

1Vpp 2dB, Imp 75

Common Earth

CIRCUIT BLOCK DIAGRAM

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