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S/M No. : TCN001GEF1
Service Manual
Color Television
CHASSIS : CN-001GF
Model : DTQ-2133SSN
DTQ-21U4SSN
DTQ-2133SSFN
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.
SEP. 2005
TABLE OF CONTENTS
SAFETY PRECAUTIONS 2
PRODUCT SAFTY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCS 2
PRODUCT SAFTY SERVICING GUIDELINES FOR COLOR TELEVISION RECEIVERS 3
SPECIFICATIONS 5
BLOCK DIAGRAM 6
ALIGNMENT INSTRUCTIONS 7
SERVICE MODE ADJUSTMENTS 7
ASSEMBLY ADJUSTMENTS 9
PARENTAL CONTROL PASSWORD SETTINGS 12
SCHEMATIC DIAGRAM 13
EXPLODED VIEW 14
ELECTRICAL PARTS LIST 16
APPENDIX(Appendix is provide only by internet [http://svc,dwe.co.kr])
IC DESCRIPTION 22
TROUBLE SHOOTING GUIDE 28
NO POWER 28
NO PICTURE 29
NO SOUND 30
CH DON'T STOP 31
NO COLOR 32
NO VERTICAL DEFLECTION 32
NO ON SCREEN DISPLY 33
REMOTE CONTROL DOES NOT OPERATE 33
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO - VIDEO PRODUCTS
CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY. SUBJECT : X-RADIATION
NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC-
TURER'S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PERSON-
THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANT RESULT- NEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTENTIAL
ING PROPERTY DAMAGE OR USER INJURY. SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PICTURE TUBE.
SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE THOR- HOWEVER, THIS TUBE DOES NOT EMIT X-RAYS WHEN THE HIGH VOLT-
OUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS AND AGE IS AT THE FACTORY SPECIFIED LEVEL. THE PROPER VALUE IS
SERVICING GUIDELINES. TO DO OTHERWISE, INCREASES THE RISK OF GIVEN IN THE APPLICABLE SCHEMATIC. OPERATION AT HIGHER VOLT-
POTENTIAL HAZARDS AND INJURY TO THE USER. AGES MAY CAUSE A FAILURE OF THE PICTURE TUBE OR HIGH VOLTAGE
WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTECTION
SUPPLY AND UNDER CERTAIN CIRCUMSTANCES, AMY PRODUCE RADIA-
FROM A.C. LINE SHOCK.
TION IN EXCESS OF DESIRABLE LEVELS.
2. ONLY FACTORY SPECIFIED C.R.T ANODE CONNECTORS MUST BE USED.
SAFETY CHECKS
DEGAUSSING SHIELDS ALSO SERVE AS X-RAY SHIELD IN COLOR SETS.
AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED, A CHECK ALWAYS RE-INSTALL THEM.
SHOULD BE MADE OF THE FOLLOWING: 3. IT IS ESSENTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN ACCU-
RATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRATION OF THE
SUBJECT:FIRE & SHOCK HAZARD METER SHOULD BE CHECKED PERIODICALLY AGAINST A REFERENCE
STANDARD. SUCH AS THE ONE AVAILABLE AT YOUR DISTRIBUTOR.
1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH A WAY AS 4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY THERE
TO AVOID POSSIBILITY OF ADJACENT COMPONENT SHORTS. THIS IS IS NO POSSIBILITY OF AN X-RADIATION PROBLEM. EVERY TIME A COLOR
ESPECIALLY IMPORTANT ON THOSE MODULES WHICH ARE TRANS- CHASSIS IS SERVICED, THE BRIGHTNESS SHOULD BE RUN UP AND
PORTED TO AND FROM THE REPAIR SHOP. DOWN WHILE MONITORING THE HIGH VOLTAGE WITH A METER TO BE
2. NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICES SUCH AS CERTAIN THAT THE HIGH VOLTAGE DOES NOT EXCEED THE SPECIFIED
INSULATORS, BARRIERS, COVERS, SHIELDS, STRAIN RELIEFS, POWER VALUE AND THAT IT IS REGULATING CORRECTLY. WE SUGGEST THAT
SUPPLY CORDS, AND OTHER HARDWARE HAVE BEEN REINSTALLED PER YOU AND YOUR SERVICE ORGANIZATION REVIEW TEST PROCEDURES
ORIGINAL DESIGN. BE SURE, THAT THE SAFETY PURPOSE OF THE
SO THAT VOLTAGE REGULATION IS ALWAYS CHECKED AS A STANDARD
POLARIZED LINE PLUG HAS NOT BEEN DEFEATED.
SERVICING PROCEDURE, AND THAT THE HIGH VOLTAGE READING BE
3. SOLDERING MUST BE INSPECTED TO DISCOVER POSSIBLE COLD SOL-
DER JOINTS, SOLDER SPLASHES OF SHARP SOLDER POINTS. BE CER- RECORDED ON EACH CUSTOMER' INVOICE.
S
TAIN TO REMOVE ALL LOOSE FOREIGN PARTICLES. 5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN A
4. CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR DETERIORATION TO PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE, AVOID
PARTS AND COMPONENTS, FOR FRAYED LEADS, DAMAGED INSULATION BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE AND THE HIGH
(INCLUDING A.C. CORD), AND REPLACE IF NECESSARY. FOLLOW ORIGI- VOLTAGE SUPPLY. DO NOT OPERATE THE PRODUCT LONGER THAN IS
NAL LAYOUT, LEAD LENGTH AND DRESS. NECESSARY TO LOCATE THE CAUSE OF EXCESSIVE VOLTAGE.
5. NO LEAD OR COMPONENT SHOULD TOUCH A RECEIVING TUBE OR A 6. REFER TO HV, B+ AND SHUTDOWN ADJUSTMENT PROCEDURES
RESISTOR RATED AT 1 WATT OR MORE. LEAD TENSION AROUND PRO- DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS (WHERE
TRUDING METAL SURFACES MUST BE AVOIDED. USED).
6. ALL CRITICAL COMPONENTS SUCH AS FUSES, FLAMEPROOF RESISTOR,
CAPACITORS, ETC. MUST BE REPLACED WITH EXACT FACTORY TYPES. SUBJECT : IMPLOSION
DO NOT USE REPLACEMENT COMPONENTS OTHER THAN THOSE SPECI-
FIED OR MAKE UNRECOMMENDED CIRCUIT MODIFICATIONS. 1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTEGRA
7. AFTER RE-ASSEMBLY OF THE STE ALWAYS PERFORM AN A.C. LEAKAGE IMPLOSION PROTECTION SYSTEM. BUT CARE SHOULD BE TAKEN TO
TEST ON ALL EXPOSED METALLIC PARTS OF THE CABINET. (THE CHAN-
AVOID DAMAGE DURING INSTALLATION. AVOID SCRATCHING THE
NEL SELECTOR KNOB, ANTENNA TERMINALS, HANDLE AND SCREWS) TO
TUBE. OF SCRATCHED REPLACE IT.
BE SURE THE SET IS SAFE TO OPERATE WITHOUT DANGER OF ELECTRI-
CAL SHOCK. DO NOT USE A LINE ISOLATION TRANSFORMER DURING 2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES.
THIS TEST USE AN A.C. VOLTMETER, HAVING 5000 OHMS PER VOLT OR
MORE SENSITIVITY, IN THE FOLLOWING MANNER : CONNECT A 1500 OHM SUBJECT : TIPS ON PROPER INSTALLATION
10 WATT RESISTOR, PARALLELED BY A .15 MFD. 150V A.C. TYPE CAPACI-
TOR BETWEEN A KNOWN GOOD EARTH GROUND (WATER POPE, CON- 1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBYHOLE OR
DUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME. CLOSELY FITTING SHELF SPACE, OVER OR CLOSE TO HEAT DUCT, OR IN
MEASURE THE A.C. VOLTAGE ACROSS THE COMBINATION OF 1500 OHM THE PATH OF HEATED AIR FLOW.
RESISTOR AND .15 MFD CAPACITOR. REVERSE THE A.C. PLUG AND 2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO
REPEAT A.C. VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC INSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIATORS
PART. VOLTAGE MEASURED MUST NOT EXCEED .75 VOLTS R.M.S THIS WHERE STEAM LEAKAGE IS A FACTOR, ETC.
CORRESPONDS TO 0.5 MILLIAMP A.C. NAY VALUE EXCEEDING THIS LIMIT 3. AVOID PLACEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING.
CONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED THE CUSTOMER SHOULD ALSO AVOID THE USE OF DECORATIVE
IMMEDIATELY. SCARVES OR OTHER COVERINGS WHICH MIGHT OBSTRUCT VENTILA-
TION.
A.C. VOLTMETER 4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMERCIAL
MOUNTING KIT, MUST FOLLOW THE FACTORY APPROVED MOUNTING
INSTRUCTIONS. A PRODUCT MOUNTED TO A SHELF OR PLATFORM MUST
RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENT THICKNESS IN SPAC-
ERS)TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM, BOLTS
OR SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR
0.15 uF WIRING. PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS.
GOOD EARTH GROUND PLACE THIS PROBE
5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON
1500 OHM
SUCH AS THE WATER ON EACH EXPOSED SLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS
PIPE, CONDUIT, ETC.
10WATT METAL PART PROPERLY SECURED.
6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS MOUNT-
SUBJECT : GRAPHIC SYMBOLS ING TO THE CART. CAUTION THE CUSTOMER ON THE HAZARDS OF TRY-
ING TO ROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS OR
THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, DEEP PILE CARPETS.
WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED 7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND WHICH
TO ALERT THE SERVICE PERSONNEL TO THE PRES- HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES. INC. FOR
ENCE OF UNINSULATED " DANGEROUS VOLTAGE"
USE WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR
THAT MAY BE OF SUFFICIENT MAGNITUDE TO CON-
GENERICALLY APPROVED FOR USE WITH T.V.S OF THE SAME OR
STITUTE A RISK OF ELECTRIC SHOCK.
LARGER SCREEN SIZE.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL 8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS,
TRIANGLE IS INTENDED TO ALERT THE SERVICE EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SINGLE
PERSONNEL TO THE PRESENCE OF IMPORTANT OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND
SAFETY INFORMATION ON SERVICE LITERATURE. FAMILY.
2
PRODUCT SAFETY SERVICING GUIDELINES FOR COLOR TELEVISION RECEIVERS
CAUTION : Do not attempt to modify this product in any way. Unau- GRAPHIC SYMBOLS :
thorized modifications will not only void the warranty, but may lead to
your being liable for any resulting property damage or user injury. The lightning flash with arrowhead symbol,
Service work should be performed only after you are thoroughly within an equilateral triangle, is intended to alert
familiar with all of the following safety checks and servicing guide- the service personnel to the presence of uninsu-
lines. To do otherwise, increases the risk of potential hazards and lated "dangerous voltage" that may be of suffi-
injury to the user. cienty magnitude to constitute a risk of electric
shock.
SAFETY CHECKS
The exclamation point within an equilateral tri-
After the original service problem has been corrected, a check should angle is intended to alert the service personnel
be made of the following: to the presence of important safety information
in service literature.
SUBJECT : FIRE & SHOCK HAZARD
Fuse symbol is printed on pcb adjacent to the
1. Be sure that all components are positioned in such a way as to fuse, with " RISK OF FIRE REPLACE FUSE AS
avoid possibility of adjacent component shorts. This is especially MARKED" The symbol is explained in the ser-
.
important on those chassis which are transported to and from the vice manual with the following wording or equiv-
repair shop. alent.
2. Never release a repair unless all protective devices such as insula-
tors, barriers, covers, shields, strain reliefs, and other hardware "CAUTION : FOR CONTINUED PROTECTION AGAINST FIRE
have been reinstalled per original design. HAZARD, REPLACE ONLY WITH SAME TYPE (4A, 125V)" and
3. Soldering must be inspected to discover possible cold solder joints, "ATTENTION: AFIN D'
ASSU UNE PROTECTION PERMANENTE
frayed leads, damaged insulation (including A.C. cord), solder CONTRE LES RISQUES D' INCENDIE, REMPLACER UNIQUE-
splashes or sharp solder points. Be certain to remove all loose for- MENT PAR UN FUSIBLE DE MEME TYPE ET DE " 125V"
4A, .
eign particals.
4. Check for physical evidence of damage or deterioration to parts SUBJECT : X-RADIATION
and components, and replace if necessary follow original layout,
lead length and dress. 1. Be sure procedures and instructions to all service personnel cover
5. No leads or components should touch a receiving tube or a resistor the subject of X-rays in current T.V. receivers is the picture tube.
rated at 1 watt or more. Lead tension around protruding metal sur- However, this tube does not emit X-rays when the high voltage is
faces must be avoided. at the factory specified level. The proper value is given in the appli-
6. All critical components such as fuses, flameproof resistors, capaci- cable schematic. Operation at higher voltages may cause a failure
tors, etc. must be replaced with exact factory types. Do not use of the picture tube or high voltage supply and, under certain cir-
replacement components other than those specified or make cumstances, may produce radiation in excess of desirable levels.
unrecommended circuit modifications. 2. Only factory specified C.R.T. anode connectors must be used.
7. After re-assembly of the set always perform an A.C. leakage test Degaussing shields also serve as X-ray shield in color sets.
on all exposed metallic parts of the cabinet, (the channel selector Always re-install them.
knob, antenna terminals, handle and screws) to be sure the set is 3. It is essential that the serviceman has available an accurate and
safe to operate without danger of electrical shock. Do not use a reliable high voltage meter. The calibration of the meter should be
line isolation transformer during this test. Use an A.C. voltmeter, checked perio - dically against a reference standard. Such as the
having 5000 ohms per volt or more sensitivity, in the following one available at your distributor.
manner : connect a 1500 ohm 10 watt resistor, paralleled by a 15 4. When the high voltage circuitry is operating properly there is no
mfd. 150V A.C. type capacitor between a known good earth possibility of an X-radiation problem. Every time a color chassis is
ground (9water pipe, conduit, etc.) and the exposed metallic parts, serviced, the brightness should be run up and down while monitor-
one at a time. Measure the A.C. voltage across the combination of ing the high voltage with a meter to be certain that the high voltage
1500 ohm resistor and 0.15 MFD capacitor. Reverse the A.C. plug does not exceed the specified value and that it is regulating cor-
and repeat A.C. voltage measurements for each exposed metallic rectly. We suggest that you and your service organization review
part. Voltage measured must not exceed 0.75 volts R.M.S. This test procedures so that voltage regulation is always checked as a
corresponds to 0.5 milliamp A.C. Any value exceeding this limit standard servicing procedure. And that the high voltage reading be
constitutes a potential shock hazard and must be corrected imme- recorded on each customer' invoice.
s
diately. 5. When troubleshooting and making test measurements in a receiver
with a problem of excessive high voltage, avoid being unnecessarily
close to the picture tub eand the high voltage compartment.
A.C. VOLTMETER
Do not operate the chassis longer than is necessary to locate the
cause of excessive voltage.
6. Refer to HV, B+and Shutdown adjustment procedures described in
the appropriate schematic and diagrams(where used).
0.15 uF
Good earth ground,
such as the water
1500 OHM Place this probe
pipe, conduit, etc.
on each exposed
10WATT metal part.
3
SUBJECT : IMPLOSION 4. Wall and shelf mounted installations using a commercial mounting
kit, must follow the factory approved mounting instructions. A
1. All direct viewed picture tubes are equipped with an integral implo- receiver mounted to a shelf or platform must retain its original
sion protection system, but care should be taken to avoid damage feet(or the equivalent thickness in spacers) to provide adequate
during installation. Avoid scratching the tube. If scratched, replace are flow across the bottom, bolts or screws used for fasteners
it. must not touch and parts or wiring. Perform leakage test on cus-
2. Use only recommended factory replacement tubes. tomized installations.
5. Caution customers against the mounting of a receiver on sloping
SUBJECT : TIPS ON PROPER INSTALLATION shelf or a tilted position, unless the receiver is properly secured.
6. A receiver on a roll-about cart should be stable on its mounting to
1. Never install any receiver in closed-in recess, cubbyhole or closely the cart. Caution the customer on the hazards of trying to roll a cart
fitting shelf space over, or close to heat duct, or in the path of with small casters across thresholds or deep pile carpets.
heated air flow. 7. Caution customers against the use of a cart or stand which has not
2. Avoid conditions of high humidity such as : Outdoor patio installa- been listed by underwriters laboratories, inc. For use with their
tions where dew is a factor. Near steam radiators where steam specific model of television receiver or generically approved for
leakage is a factor, etc. use with T.V.' of the same or larger screen size.
s
3. Avoid placement where draperies may obstruct rear venting. The
customer should also avoid the use of decorative scarves or other
coverings which might obstruct ventilation.
4
SPECIFICATIONS
MODEL DTQ-2133SSN
DTQ-2133SSFN REMARK
ITEM DTQ-21U4SSN
TV STANDARD NTSC - M
POWER INPUT 110V FREE
POWER CONSUMTION 65 WATTS
TUNING SYSTEM FREQUENCY SYNTHESIZER
TUNING RANGES VHF : 2 ~ 13 (12)
UHF : 14 ~ 69 (56)
CATV : 1 ~ 125 (125)
SOUND OUTPUT 1.3W+1.3W
SPEAKER 8ohm 3W
ANTENA INPUT 75ohm Unbalanced
IMPEDANCE
AUXILIARY INPUT Front : Video, Audio
TERMINAL Rear : Video, Audio
INTERMEDIATE Picture IF Carrier Frequency : 45.75MHz
FREQUENCIES Sound IF Carrier Frequency : 41.25MHz
Color Sub- Carrier Frequency : 3.579545MHz
REMOTE CONTROL R-48C04
SPECIAL FUNCTIONS 3-Language OSD
With CAPTION
Wakeup On/Off Time
-
Sleep Timer
Power Restore
5
BLOCK DIAGRAM
6
ALIGNMENT INSTRUCTIONS
1. SERVICE MODE ADJUSTMENTS
Follow the steps below whenever service adjustment is required. See Table- A and Table- B to determine if
service adjustments are required.
1) How to enter the service mode using the user remote control.