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S/G No. : CP005P-010G1

Service Guide
Colour Television
CHASSIS : CP-005
Model :
DTP-14V1/V2/V3/V5/C3/C4/C5TF
20V1/V3/C4/C5TF
21V1/V2/V4/V6/C6TF

14/20/21 V1 14/21 V2 14/20 V3 21 V4

14 V5 14 C3 14/20 C4 14/20 C5

21 C6
If you need further information ( IC, Circuit descriptions or troubleshooting . . .)
about this model, Please visit our web site.( http://svc.dwe.co.kr)
Specifications
DTP-14V1TF
ITEM DTP-14V2TF DTP-21V1TF
DTP-14V3TF DTP-20V1TF DTP-21V2TF
DTP-14V5TF DTP-20V3TF DTP-21V4TF
DTP-20C4TF REMARKS
DTP-14C3TF DTP-21V6TF
ITEMS DTP-14C4TF DTP-20C5TF DTP-21C6TF
DTP-14C5TF
CCIR STANDARD BG, D/K, I/I, H, L/L'
COLOR STANDARD PAL / SECAM / NTSC(AV only)
POWER INPUT AC 230V, 50Hz
POWER CONSUMPTION 57 W 70 W 73 W
TUNING SYSTEM Frequency Synthesizer (FS) Tuning System
RECEPTION CHANNEL BAND I : CH2 - CH4
BAND II : CH5 - CH12
CABLE BAND : S1' - S3', S1 - S20
HYPER BAND : S21 - S41
BAND IV, V : CH21 - CH69 (CH 70 for Italy)
SOUND OUTPUT 3W
SPEAKER 3 W 8 ohm
ANTENNA INPUT 75 ohm Unbalanced
IMPEDANCE
AUXILIARY TETMINAL INPUT : RCA JACK (Front) COMMOM
SCART JACK (Rear)
REMOTE CONTROL R-40A01
SPECIAL FUNCTION 14 - Language OSD
With TELETEXT
Wake-up On Time
Sleep Timer

DAEWOO ELECTRONICS CO., LTD
http : //svc.dwe.co.kr April. 2000
Important Service Notes
1. X-ray Radiation Rrecaution Connect at 1500 ohm 10 watt resistor, paralleled by a 0.15 mfd. AC type
1) Excessive high voltage can produce potentially hazardous X-RAY RADIA- capacitor, between a known good earth ground (water pipe, conduit etc.)
TION. To avoid such hazards, the high voltage must not be above the spec- and the exposed metallic parts, one at a time. Measure the AC voltage
ified limit. The nominal value of the high voltage of this receiver is across the combination of 1500 ohm resistor and 0.15 mfd capacitor. Volt-
25.5kv(20" ) & 23.5kv(14" zero beam current (minimum brightness)
/21" )at age measured must not exceed 0.3 volts RMS. This corresponds to 0.2 mill-
under a 120V/220V AC power source. The high voltage must not, under any liamp. AC. Any value exceeding the limit constitutes a potential shock
circumstances, exceed 28kv(20" ) & 26kv(14" Each time a receiver
/21" ). hazard and must be corrected immediately.
requires servicing, the high voltage should be checked following the HIGH
VOLTAGE CHECK procedure on page 10 of this manual. It is recom-
mended as a parts of the service record. It is important to use an accurate AC VOLT METER

and reliable high voltage meter.
2) This receiver is equipped with X-RADIATION PROTECTION circuit which
prevents the receiver from producing an excessively high voltage even if the
B+voltage increases abnormally. Each time the receiver is serviced, X-
RADIATION PROTECTION circuit must be checked to determine that the 0.15uF
circuit is properly functioning, following the X-RADIATION PROTECTION
1500 OHM Place this probe
CIRCUIT CHECK procedure on page 6 of this manual. on each exposed
Good earth ground
3) The only source of X-RAY RADIATION in this TV receiver is the picture tube. such as d water
metallic part.
pipe, conduit, etc.
For continued X-RAY RADIATION protection, the replacement tube must be 10WATT

exactly the same type tube as specified in the parts list.
4) Some parts in this receiver have special safety-related characteristics for X-
RAY RADIATION protection. For continued safety, parts replacement 3. Product Safety Notice
should be undertaken only after referring to the PRODUCT SAFETY Many electrical and mechanical parts in this chassis have special safety-related
NOTICE below. characteristics. These characteristics are often passed unnoticed by a visual
inspection and the protection afforded by them cannot necessarily be obtained
2. Safety Precaution by using replacement components rated for higher voltage, wattage, etc.
WARNING: Service should not be attempted by anyone unfamiliar with the Replacement parts which have these special safety characteristics are identi-
necessary precaution on this receiver. The following are the necessary precau- fied in this manual and its supplements; electrical components having such fea-
tion to be observed before servicing. tures are identified by shading on the schematic diagram and the parts list.
Before replacing any of these components, read the parts list in this manual
1) Since the chassis of this receiver has hazardous potential to ground when- carefully. The use of substitute replacement parts which do not have the same
ever the receiver is plugged in (floating chassis), an isolation transformer safety characteristics as specified in the parts list may create X-ray radiation or
must be used during servicing to avoid shock hazard. other hazards.
2) Always discharge the picture tube anode to the CRT conductive coating the
picture tube. The picture tube is highly evacuated and if broken, glass frag- 4. Service Notes
ments will be violently expelled. Use shatterproof goggles and keep picture 1) When replacing parts or circuit boards, clamp or bend the lead wires to termi-
tube away from the body while handling. nals before soldering.
3) When placing chassis in the cabinet, always be certain that all the protective 2) When replacing a high wattage resistor (metal oxide film resistor) in the cir-
devices are put back in place, such as; nonmetallic control knobs, insulat- cuit board, keep the resistor min 1/2 inch away form circuit board.
ing covers, shields, isolation resistor-capacitor network, etc. 3) Keep wires away from high voltage or high temperature components.
4) Before returning the set to the customer, always perform an AC leakage cur-
rent check on the exposed metallic parts of the cabinet, such as antennas,
terminals, screw-heads, metal overlays, control shafts etc. to be sure the set
DAEWOO ELECTRONICS CO., LTD.
is safe to operate without danger of electrical shock. Plug the AC line cord C.P.OBOX8003 SEOUL, KOREA
directly into a 120V AC outlet (do not use a line isolation transformer during Tel : 82-2-360-7798
Fax : 82-2-360-7877
this check). Use an AC voltmeter having 5000 ohms per volt or more sensi- E-mail : [email protected]
tivi-ty in the following manner. Printed in Apr. 2000
Alignment Instructions
2. SCREEN
SVC v0 1) Receive the Retma pattern and heat run over 15minutes.
2) Adjust the " G BIAS, R, G DRIVE"to 0, " BIAS"to
R, B
R BIAS 159 127, " DRIVE"to 32.
B
G BIAS 136 ENTER SERVICE MODE Adjust the screen volume that the Retma pattern reachs
B BIAS 127 the cut-off point.
R DRIVE 35 1. Select the Pr 91.
G DRIVE 31 2. Adjust "Sparpness "to 0. 3. WHITE BALANCE
B DRIVE 32 3. Enter the service mode 1) Receive the Full white pattern and heat run over
V. CENTER 10 using the follow keys. 15minutes.
V. SIZE 23 R G MENU. 2) Adjust the picture control at the point " value of white
X"
H. CENTER 28
balance instrument in 20cd/m
VCO 07
3) Enter the service mode.
VCO FIN 107
4) Adjust " BIAS, G BIAS"to x=288, y=301.
R
VCO-L 05
5) In order to exit the service mode power off the TV set and
VCO-L FIN 113
power on.
AGC NO
6) Set the TV set to " Normal I"mode(20/21 inch) or set to
LED EAST 44
"Normal II"mode(14 inch)
Pr 01
7) Enter the service mode.
8) Adjust " DRIVE, G DRIVE"to x=288, y=301.
R
9) Repeat above process until the white balance value to
x=288, y=301, X=20, x=288, y=301, X=200
(approximate) in 2) -8).

1. AFT 4. FOCUS
1) Set a signal Generator with 1) Apply a RETMA PATTERN signal.
- RF FREQUENCY = 38.9MHz, 34.2MHz (L' ) 2) Adjust the Focus Volume on FBT to obtain optimal
- RF OUTPUT LEVEL = 80+/-5dBuV resolution.
- System = PAL for 38.9MHz.
SECAM-I for 43.2MHz. 5. AGC
2) Connect the Signal Generator RF Output
1) Set a pattern Generator with
(PAL 38.9MHz) to P101 (Tuner IF Output).
- RF LEVEL = 60dBuV
There must be no signal input to the tuner.
- 100% FULL COLOR BAR
3) Locate the cusor to "VCO"in Service Mode Menu,
2) Connect the Pattern Genetator RF Output to tuner
then press the " +"key and wait until the
Vol
RF input.
"Please wait"disappear on the TV screen.
3) Connect the probe of oscilloscope in AGC pin of tuner.
4) Connect the Signal Generator RF Output
4) Adjust the AGC point to MAX - 1V.
(SECAM-L 34.2MHz) to P101 (Tuner IF Output).
( Simple Method )
5) Locate the cusor to "VCO-L"in Service Mode Menu,
1) Receive the pattern.
then press the " +"key and wait until the
Vol
2) Locate the cusor in "AGC"and adjust using the
"Please wait"disappear on the TV screen.
"VOL +"or " VOL -"keys.
3) Adjust the point there is no noise in about 60dBuV and no
beat in about 90dBuV.
6. GEOMETRY
6.1 VERTICAL CENTER
1) Set the TV to "NORMAL I"mode.
2) Enter the service mode.
3) Locate the cusor at "V.CENTER"then press " VOL +"
or "VOL -"keys to adjust the center line with the
mechanical center marks of the CRT.

6.2 VERTICAL SIZE
* The VERTICAL CENTER adjustment has to be done in advance.
1) Receive the Retma pattern.
2) Set the TV to "NORMAL I"mode.
3) Enter the service mode.
4) Locate the cursor at "V.SIZE"then press " VOL +"
or "VOL -"keys to adjust the upper part of the picture.

6.3 HORIZONTAL CENTER
1) Apply a RETMA PATTERN signal.
2) Set the TV to "NORMAL I"mode.
3) Enter the service mode.
4) Locate the cursor at "H.CENTER"then press " VOL +"
or "VOL -"keys to adjust the picture centering.

if EEPROM(I702) has been changed;
- Option data has to be change and
- all alignment function has to be readjusted

* The initial state of adjustment are as follows;
- V-Center, V-Size, H-Center, R, G, B, AFT = Center ( )
- AGC =

* Service Remocon
Electrical Parts List
LOC PART CODE PART NAME PART DESCRIPTION LOC PART CODE PART NAME PART DESCRIPTION LOC PART CODE PART NAME PART DESCRIPTION

D107 DUZ5R1B--- DIODE ZENER UZ-5.1B UNIZON AWG22 1/0.65 TIN R501 RD-4Z101J- R CARBON FILM 1/4 100 OHM J
L603 85801065GY WIRE COPPER
D301,3 D1N4937G-- DIODE 1N4937G (TAPPING) COATING R502 RD-4Z101J- R CARBON FILM 1/4 100 OHM J