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S/M No: TCP820BEF0
Service Manual
Colour Television NORMAL / WIDE STEREO
CHASSIS : CP-820
MODEL : DTK-28A7Z ** / DTK-28B1Z **
DTK-28W5Z ** / DTK-28B2Z **
DTK-28A6Z ** / DTK-28G6Z **
DTK-2880Z ** / DTK-28G7Z **
DTK-28G8Z **
Specifications
Normal Wide
CRT A66EAK071X44 A66EAK001X44
SYSTEM PAL/SECAM-B/G,D/K,PAL-I/I',SECAM-L/L' NTSC-3.58/4.43 (Play back)
Main Voltage 230V AC, 50Hz
Stand-by mode : 2.0Watts
Power Consumption
Normal operating mode : 120 Watts
Sound Output 10 + 10 Watts, 10% THD at RF 60% mod. (1kHz)
Speaker 12W 8ohm x 2 EA
Antenna Impdeance 75 ohm unbalanced input (Din Standard)
Tuning System Frequency Synthesize(FS) Tuning System
Tuner UV1316/A(Philips), DT5-BF18D(Partsnics), EL2782-105-B(Siel), TECC2949PG35W(S/S)
Number of Program 100 programs
21 pin EURO-SCART jack (AV input, TV output, RGB input)
21 pin EURO-SCART jack (AV input, S-VHS input)
Aux. Terminal RCA type AV input jack
Headphone jack
Remote Controller R-22D06 with 2 "AAA" type batteries
TOP(5 Page memory) & FLOF(7 Page memory)
Teletext - West option : English, German/Dutch/Flemish, French, Italian, Spanish/Portuguese,
Swedish/Finnish/Danish, Hungarian, Rumanian, Turkish
OSD Language - West : English, German, French, Italian, Spanish, Nethelands, Swedish
Caution
: In this Manual, some parts can be changed for improving. their
performance without notice in the parts list. So, if you need the
latest parts information, please refer to PPL(Parts Price List)in
Service Information Center(http://svc.dwe.co.kr)
DAEWOO ELECTRONICS Corp.
http : //svc.dwe.co.kr MAY 2003
TABLE OF CONTENTS
SAFETY INSTRUCTION .................................................................................................................. 2
SPECIFICATIONS ............................................................................................................................ 3
CIRCUIT BLOCK DIAGRAM ........................................................................................................... 4
ALIGNMENT INSTRUCTION ........................................................................................................... 5
SCHEMATIC DIAGRAM .................................................................................................................. 12
EXPLODED VIEW ............................................................................................................................ 14
PRINTED CIRCUIT BOARD ............................................................................................................ 16
SERVICE PARTS LIST .................................................................................................................... 19
APPENDIX (" Appendix is provided only by internet [http://svc.dwe.co.kr] ")
IC DESCRIPTION ............................................................................................................................. 1
IC DC VOLTAGE CHARTS .............................................................................................................. 18
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 prodece potentially haz- 2. The only source of X-RAY Radiation in this TV receiver
ardous X-RAY RADIATION. To avoid such hazards, is the picture tube. For continued X-RAY RADIATION
the high voltage must not exceed the specified limit. protection, the replacement tube must be exactly the
The nominal value of the high voltage of this receiver is same type tube as specified in the parts list.
29-31kv at max beam current. The high voltage must
not, under any circumstances, exceed 35kv. (33kv :
SAMSUNG CRT)
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.
SAFETY PRECAUTION
1. Potentials of high voltage are present when this 2. If any Fuse in this TV receiver is blown, replace it with
receiver is operating. Operation of the receiver outside the FUSE specified in the Replacement Parts List.
the cabinet or with the back board removed involves a 3. When replacing a high wattage resistor ( oxide metal
shock hazard from the receiver. film resistor ) in circuit board, keep the resistor 10mm
1) Servicing should not be attempted by anyone who is away from circuit board.
not thoroughly familiar with the precautions neces- 4. Keep wires away from high voltage or high tempera-
sary when working on high-voltage equipment. ture components.
2) Dischange the high potential of the picture tube 5. This receiver must operate under AC230 volts, 50Hz.
before handling the tube. The picture tube is highly NEVER connect to DC supply or any other power or
evacuated and if broken, glass fragments will be frequency.
violently expelled.
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this have nents having such features are identified designated
special safety-related characteristics. These charac- symbol on the parts list.
teristics are often passed unnoticed by a visual Before replacing any of these components, read the
inspection and the X-RAY RADIATION protection parts list in this manual carefully. The use of substitute
afforded by them cannot necessarily be obtained by replacement parts which do not have the same safety
using replacement components rated for higher volt- characterisitics as specifide in the parts list may create
age, wattage, etc. Replacement parts which have X-RAY Radiation.
these special safety characteristics are identified in
this manual and its supplements, electrical compo-
2
SPECIFICATIONS
PIN Signal Designation Matching Value
1 Audio Out (linked with 3) 0.5Vrms, Imp < 1 k (RF 60% MOD)
2 Audio In (linked with 6) 0.5Vrms, Imp < 10 k
3 Audio Out (linked with 1) 0.5Vrms, Imp < 1 k (RF 60% MOD)
4 Audio Earth
5 Blue Earth
6 Audio in (linked with 2) 0.5Vrms, Imp < 10 k (RF 60% MOD)
7 Blue in 0.7Vpp + 2dB, Imp 75
-
8 Slow (Function) Switching TV : 0-2V, PERI : 9.5 - 12V, Imp > 10 k
9 Green Earth
10 NC
11 Green In 0.7Vpp + 2dB, Imp 75
-
12 NC
13 Red Earth
14 Rapid(Blanking) Switching Earth
15 Red In, C In 0.7Vpp + 2dB, Imp 75
-
16 Rapid(Blanking) switching Logic 0 : 0 - 0.4V, Logic 1 : 1 - 3V, Imp 75
17 Video Earth
18 Rapid Blanking Earth
19 Video Out 1Vpp + 2dB, Imp 75
-
20 Video In, Y In 1Vpp + 2dB, Imp 75
-
21 Common Earth
3
CIRCUIT BLOCK DIAGRAM
4
ALIGNMENT INSTRUCTIONS
User Remocon
1. R-22D06
TV...................................TXT TV................................TXT
PR UP..........................PAGE UP
VOLUME...............VOLUME (CURSOR UP)
DOWN ..................DOWN
(CURSOR LEFT) VOLUME UP...........VOLUME UP
(CURSOR RIGHT)
MENU.......................MENU
PR DOWN..............PAGE DOWN
(CURSOR DOWN)
POWER.................POWER
NORMAL .................... Not used
PR ......................... PAGE
NUMBER NUMBER A V .............................. Not used
0-9 0-9
TXT ............................. Not used
SOUND ....................... Not used
SLEEP...................Not used MODE
MUTE .......................... MUTE
Not used................CANCEL Not used ...................... INDEX
Not used................... HOLD Not used ....................... Size
RECALL...............SUBPAGE Zoom ..................Double Window
STILL......................REVEAL EFFECT ....................... Not used
Not used ..........................R Not used ...................... C
Not used ..........................G Not used ....................... Y
R-22D06
5
ALIGNMENT INSTRUCTIONS
* How to Enter the " Service Mode " with user remocon.
1) Set the TV Pr 91
2) Sharpness " MIN " control.
3) Push the Red, Green, Menu buttons in regular sequency within 5 seconds after setting TV power off.
4) You can see the Menu of " service mode " on the screen.
5) The PR UP/DOWN buttons on the remote controller are used to move the selection bar up or down the Menus.
6) The VOL UP/DOWN buttons on the remote controller are used to adjust levels.
7) If you want to exit from " Service Mode " then power the TV off.
V. Slope -002 Tuner is Phi Osd Contrast 380
V. Center 887 Flat Option NO Osd Bright 000
V. Size 091 Svm SVG 020 Text Gain NO
SVC v1 S. Curve 035 Svm SVD 001 Tilt Option NO
H. Center -325 Svm SVDEL 013 Transparent NO
CP-820 H. Width 088 Svm SVCOR 012 Vertical angle 000
EW. Para -068 Bcl Thres 430 Vertical bow 000
EW. Cor Top 015 Bcl Tc 250
EW. Cor Low 015 Bcl Gain 511
EW.Sym -013 Nor1 Bright 038
R. Bias 330 Nor1 Cont 058
G. Bias 330 Nor1 Color 038
B. Bias 330 Nor1 Sharp 032
R. Drive 370 Nor1 Tint 032
G. Drive 370 Nor2 Bright 038
B. Drive 370 Nor2 Cont 038
G2 Adjust 000 Nor2 Color 038
Sub bright 000 Nor2 Sharp 032
Double TEXT 514 Nor2 Tint 032
Wide Option NO Dolby3411 NO
- You can see the SVC Menu by OSD in TV set.
6
ALIGNMENT INSTRUCTIONS
Alignment Instructions for CP-820 Chassis
1 PAGE
CHASSIS CP-820
MODEL DTK-28A7ZZF DTK-28A7ZLF DTK-28W5ZZF DTK-28W5ZLF
V. Slope -002 -002 -002 -002
V. Center 887 887 035 035
V.Size 091 091 111 111
S.Curve 035 035 010 010
H.Center -325 -325 -316 -316
H.Width 088 088 044 044
EW.Para -068 -068 -059 -059
EW.Cor Top 015 015 004 004
EW.Cor Low 015 015 004 004
EW. Sym -013 -013 -013 -013
R Bias 330 330 330 330
G Bias 330 330 330 330
B Bias 330 330 330 330
R Drive 370 370 370 370
G Drive 370 370 370 370
B Drive 370 370 370 370
G2 Adjust 000 000 000 000
Sub Bright 000 000 000 000
Double TEXT 514 514 514 514
Wide Option NO NO YES YES
2 PAGE
Tuner Is Phi Phi Phi Phi
Flat Option N0 N0 N0 N0
Svm SVG