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Service Manual
Color Television
MODEL: CN-201A/B NTSC-M SYSTEM DTQ-14Q1FS, DTQ-14Q2TS DTQ-14Q3FS, DTQ-14T1AS DTQ-14T2FS, DTQ-20Q1FS DTQ-20Q2FS, DTQ-20Q3FS DTQ-20T1AS, DTQ-20T2AS DTQ-20T1FS, DTQ-20T2FS DTQ-20T3FS, DTQ-21T1FS DTQ-21T2FS, DTQ-21T5FS DTQ-21T9FS, DTQ-20T1FC
CHASSIS :
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 CO., LTD.
FEATURES
FS (Frequency Synthesizer) Tuning System CATV Ready High Focus Minineck CRT
ELECTRICAL SPECIFICATIONS
POWER INPUT AC90V - AC250V DTQ-20T1FC : 120V POWER RATING 14" Model 20" MONO Model 20" ST Model 21" ST Model INTERMEDIATE FREQUENCIES PICTURE IF CARRIER FREQUENCY SOUND IF CARRIER FREQUENCY COLOR SUB CARRIER FREQUENCY AUDIO OUTPUT RATING SPEAKER ANTENNA INPUT IMPEDANCE TUNING RANGES VHF UHF CATV 50/60Hz 60HZ ONLY 60W 70W 80W 80W 45.75MHz 41.25MHz 42.17MHz MONO(2W) ST(3W+3W) 3W 16ohm VHF/UHF 75 ohm UNBALANCED 2 THRU 13 14 THRU 69 1 THRU 125
CONTENTS
Safety Precautions Control View Important Service Notes Block Diagram General Adjustments Operation Charaeteristic of Power Block Trouble Shooting Charts Description of Semiconductors Printed Circuit Board Diagram Exploded Views Schematic Diagram with Waveforms Parts List Option List 3 6 8 9 10 14 22 28 32 33 50 51 65
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PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO VIDEO PRODUCTS
CAUTION :
DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY. NEVER
SUBJECT : X-RADIATION
950ART94 1009
PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURER S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANT RESULTING PROPERTY DAMAGE OR USER INJURY. SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS AND SERVICING GUIDELINES. TO DO OTHERWISE, INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO THE USER. WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTECTION FROM A.C. LINE SHOCK.
1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PERSONNEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTENTIAL SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PICTURE TUBE. HOWEVER, THIS TUBE DOES NOT EMIT X-RAYS WHEN THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL. THE PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC. OPERATION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PICTURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER CERTAIN CIRCUMSTANCES, AMY PRODUCE RADIATION IN EXCESS OF DESIRABLE LEVELS. 2. ONLY FACTORY SPECIFIED C.R.T ANODE CONNECTORS MUST BE USED. DEGAUSSING SHIELDS ALSO SERVE AS X-RAY SHIELD IN COLOR SETS. ALWAYS REINSTALL THEM. 3. IT IS ESSENTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN ACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRATION OF THE METER SHOULD BE CHECKED PERIODICALLY AGAINST A REFERENCE STANDARD. SUCH AS THE ONE AVAILABLE AT YOUR DISTRIBUTOR. 4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY THERE IS NO POSSIBILITY OF AN X-RADIATION PROBLEM. EVERY TIME A COLOR CHASSIS IS SERVICED, THE BRIGHTNESS SHOULD BE RUN UP AND DOWN WHILE MONITORING THE HIGH VOLTAGE WITH A METER TO BE CERTAIN THAT THE HIGH VOLTAGE DOES NOT EXCEED THE SPECIFIED VALUE AND THAT IT IS REGULATING CORRECTLY. WE SUGGEST THAT YOU AND YOUR SERVICE ORGANIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGULATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCEDURE, AND THAT THE HIGH VOLTAGE READING BE RECORDED ON EACH CUSTOMER S INVOICE. 5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN A PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE, AVOID BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE AND THE HIGH VOLTAGE SUPPLY. DO NOT OPERATE THE PRODUCT 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).
SAFETY CHECKS
AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED, A CHECK SHOULD BE MADE OF THE FOLLOWING:
SUBJECT:FIRE & SHOCK HAZARD
1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH A WAY AS TO AVOID POSSIBILITY OF ADJACENT COMPONENT SHORTS. THIS IS ESPECIALLY IMPORTANT ON THOSE MODULES WHICH ARE TRANSPORTED TO AND FROM THE REPAIR SHOP. 2. NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICES SUCH AS INSULATORS, BARRIERS, COVERS, SHIELDS, STRAIN RELIEFS, POWER SUPPLY CORDS, AND OTHER HARDWARE HAVE BEEN REINSTALLED PER ORIGINAL DESIGN. BE SURE, THAT THE SAFETY PURPOSE OF THE POLARIZED LINE PLUG HAS NOT BEEN DEFEATED. 3. SOLDERING MUST BE INSPECTED TO DISCOVER POSSIBLE COLD SOLDER JOINTS, SOLDER SPLASHES OF SHARP SOLDER POINTS. BE CERTAIN TO REMOVE ALL LOOSE FOREIGN PARTICLES. 4. CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR DETERIORATION TO PARTS AND COMPONENTS, FOR FRAYED LEADS, DAMAGED INSULATION (INCLUDING A.C. CORD), AND REPLACE IF NECESSARY. FOLLOW ORIGINAL LAYOUT, LEAD LENGTH AND DRESS. 5. NO LEAD OR COMPONENT SHOULD TOUCH A RECEIVING TUBE OR A RESISTOR RATED AT 1 WATT OR MORE. LEAD TENSION AROUND PROTRUDING METAL SURFACES MUST BE AVOIDED. 6. ALL CRITICAL COMPONENTS SUCH AS FUSES, FLAMEPROOF RESISTOR, CAPACITORS, ETC. MUST BE REPLACED WITH EXACT FACTORY TYPES. DO NOT USE REPLACEMENT COMPONENTS OTHER THAN THOSE SPECIFIED OR MAKE UNRECOMMENDED CIRCUIT MODIFICATIONS. 7. AFTER RE-ASSEMBLY OF THE STE ALWAYS PERFORM AN A.C. LEAKAGE TEST ON ALL EXPOSED METALLIC PARTS OF THE CABINET. (THE CHANNEL SELECTOR KNOB, ANTENNA TERMINALS, HANDLE AND SCREWS) TO BE SURE THE SET IS SAFE TO OPERATE WITHOUT DANGER OF ELECTRICAL SHOCK. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS TEST USE AN A.C. VOLTMETER, HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY, IN THE FOLLOWING MANNER : CONNECT A 1500 OHM 10 WATT RESISTOR, PARALLELED BY A .15 MFD. 150V A.C. TYPE CAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND (WATER POPE, CONDUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME. MEASURE THE A.C. VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND .15 MFD CAPACITOR. REVERSE THE A.C. PLUG AND REPEAT A.C. VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE MEASURED MUST NOT EXCEED .75 VOLTS R.M.S THIS CORRESPONDS TO 0.5 MILLIAMP A.C. NAY VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY. A.C. VOLTMETER
SUBJECT : IMPLOSION
1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTEGRAL IMPLOSION PROTECTION SYSTEM. BUT CARE SHOULD BE TAKEN TO AVOID DAMAGE DURING INSTALLATION. AVOID SCRATCHING THE TUBE. OF SCRATCHED REPLACE IT. 2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES.
SUBJECT : TIPS ON PROPER INSTALLATION
1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBYHOLE OR CLOSELY FITTING SHELF SPACE, OVER OR CLOSE TO HEAT DUCT, OR IN THE PATH OF HEATED AIR FLOW. 2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO INSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIATORS WHERE STEAM LEAKAGE IS A FACTOR, ETC. 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. 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 SPACERS)TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM, BOLTS OR SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS.
A.C. VOLTMETER
0.15µF GOOD EARTH GROUND SUCH AS THE WATER PIPE, CONDUIT, ETC. 1500 OHM PLACE THIS PROBE ON EACH EXPOSED METAL PART
10WATT
5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON SLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS PROPERLY SECURED. 6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS MOUNTING TO THE CART. CAUTION THE CUSTOMER ON THE HAZARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS OR DEEP PILE CARPETS. 7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND WHICH HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES. INC. FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE WITH T.V.S OF THE SAME OR LARGER SCREEN SIZE. 8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS, EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SINGLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY.
SUBJECT : GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED DANGEROUS VOLTAGE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION ON SERVICE LITERATURE.
3
Product safety servicing guidelines for color television receivers
CAUTION : Do not attempt to modify this product in any way. Unauthorized modifications will not only void the warranty, but may lead to your being liable for any resulting property damage or user injury. Service work should be performed only after you are thoroughly familiar with all of the following safety checks and servicing guidelines. To do otherwise, increases the risk of potential hazards and injury to the user.
SAFETY CHECKS
After the original service problem has been corrected, a check should be made of the following:
A.C. VOLTMETER
Good earth ground, such as the water pipe, conduit, etc.
0.15µF · 1500 OHM 10WATT · Place this probe on each exposed metal part.
GRAPHIC SYMBOLS :
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the service personnel to the presence of uninsulated dangerous voltage that may be of sufficienty magnitude to constitute a risk of electric shock. The exclamation point within an equilateral triangle is intended to alert the service personnel to the presence of important safety information in service literature. Fuse symbol is printed on pcb adjacent to the fuse, with RISK OF FIRE REPLACE FUSE AS MARKED . The symbol is explained in the service manual with the following wording or equivalent. CAUTION : FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH SAME TYPE 4A, 125V FUSE and ATTENTION: AFIN D ASSU UNE PROTECTION PERMANENTE CONTRE LES RISQUES D INCENDIE, REMPLACER UNIQUEMENT PAR UN FUSIBLE DE MEME TYPE ET DE 4A, 125V .
SUBJECT : FIRE & SHOCK HAZARD
1. Be sure that all components are positioned in such a way as to avoid possibility of adjacent component shorts. This is especially important on those chassis which are transported to and from the repair shop. 2. Never release a repair unless all protective devices such as insulators, barriers, covers, shields, strain reliefs, and other hardware have been reinstalled per original design. 3. Soldering must be inspected to discover possible cold solder joints, frayed leads, damaged insulation (including A.C. cord), solder splashes or sharp solder points. Be certain to remove all loose foreign particals. 4. Check for physical evidence of damage or deterioration to parts and components, and replace if necessary follow original layout, lead length and dress. 5. No leads or components should touch a receiving tube or a resistor rated at 1 watt or more. Lead tension around protruding metal surfaces must be avoided. 6. All critical components such as fuses, flameproof resistors, capacitors, etc. must be replaced with exact factory types. Do not use replacement components other than those specified or make unrecommended circuit modifications. 7. After re-assembly of the set always perform an A.C. leakage test on all exposed metallic parts of the cabinet, (the channel selector knob, antenna terminals, handle and screws) to be sure the set is safe to operate without danger of electrical shock. Do not use a line isolation transformer during this test. Use an A.C. voltmeter, having 5000 ohms per volt or more sensitivity, in the following manner : connect a 1500 ohm 10 watt resistor, paralleled by a 15 mfd. 150V A.C. type capacitor between a known good earth ground (9water pipe, conduit, etc.) and the exposed metallic parts, one at a time. Measure the A.C. voltage across the combination of 1500 ohm resistor and 0.15 MFD capacitor. Reverse the A.C. plug and repeat A.C. voltage measurements for each exposed metallic part. Voltage measured must not exceed 0.75 volts R.M.S. This corresponds to 0.5 milliamp A.C. Any value exceeding this limit constitutes a potential shock hazard and must be corrected immediately.
SUBJECT : X-RADIATION
1. Be sure procedures and instructions to all service personnel cover the subject of X-rays in current T.V. receivers is the picture tube. However, this tube does not emit X-rays when the high voltage is at the factory specified level. The proper value is given in the applicable schematic. Operation at higher voltages may cause a failure of the picture tube or high voltage supply and, under certain circumstances, may produce radiation in excess of desirable levels. 2. Only factory specified C.R.T. anode connectors must be used. Degaussing shields also serve as X-ray shield in color sets. Always re-install them. 3. It is essential that the serviceman has available an accurate and reliable high voltage meter. The calibration of the meter should be checked perio dically against a reference standard. Such as the one available at your distributor. 4. When the high voltage circuitry is operating properly there is no possibility of an X-radiation problem. Every time a color chassis is serviced, the brightness should be run up and down while monitoring the high voltage
4
with a meter to be certain that the high voltage does not exceed the specified value and that it is regulating correctly. We suggest that you and your service organization review test procedures so that voltage regulation is always checked as a standard servicing procedure. And that the high voltage reading be recorded on each customer s invoice. 5. When troubleshooting and making test measurements in a receiver with a problem of excessive high voltage, avoid being unnecessarily close to the picture tube and the high voltage compartment. 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).
2. Avoid conditions of high humidity such as : Outdoor patio installations where dew is a factor. Near steam radiators where steam leakage is a factor, etc. 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. Wall and shelf mounted installations using a commercial mounting kit, must follow the factory approved mounting instructions. A receiver mounted to a shelf or platform must retain its original feet(or the equivalent thickness in spacers) to provide adequate are flow across the bottom, bolts or screws used for fasteners must not touch and parts or wiring. Perform leakage test on customized installations. 5. Caution customers against the mounting of a receiver on sloping 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 the cart. Caution the customer on the hazards of trying to roll a cart with small casters across thresholds or deep pile carpets. 7. Caution customers against the use of a cart or stand which has not been listed by underwriters laboratories, inc. For use with their specific model of television receiver or generically approved for use with T.V. s of the same or larger screen size.
SUBJECT : IMPLOSION
1. All direct viewed picture tubes are equipped with an integral implosion protection system, but care should be taken to avoid damage during installation. Avoid scratching the tube. If scratched, replace it. 2. Use only recommended factory replacement tubes.
SUBJECT : TIPS ON PROPER INSTALLATION
1. Never install any receiver in closed-in recess, cubbyhole or closely fitting shelf space over, or close to heat duct, or in the path of heated air flow.
5
CONTROL VIEW
MONO MODEL
STEREO MODEL
Overview of Your Equipment
Your TV comes with a remote control. The section below summarizes the buttons, controls, and terminals that you will use with your TV.
Your TV's Front Panel 1 POWER
Use this button to turn your TV on or off.
2 VIDEO IN jack Use this jack to receive a video signal from another A/V component. 3 AUDIO IN jack
MONO MODEL use this jack to receive an audio signal from another A/V component. But, STEREO MODEL use this jack to receive audio L/R signal from another A/V component.
4 EARPHONE IN jack
Use this jack to receive a audio signal from your TV.
5 STAND-BY (red) indicator
This indicator lights up when the power is off.
6 Remote control receiver
This receiver receives a signal from your remote control. Don't block it.
7 8
CH
Use these buttons to change channels on your TV, or to select items in the menu system.
VOL
Use these buttons to change your TV's volume, to activate selections in the menu system, or to change audio and video settings.
9 MENU
Use this button to turn the TV's menu system on and off. MONO MODEL
POWER VIDEO AUDIO EARPHONE STAND-BY CH VOL MENU
STEREO MODEL
AUDIO
POWER
VIDEO L
R EARPHONE STAND-BY
CH
VOL
MENU
6
REMOTE CONTROL UNIT
1 POWER
Use this button to turn your TV on or off.
2
CH
Use these buttons to change channels on your TV, or select items in the menu system.
1
3
VOL
Use these buttons to change your TV's volume, to activate selections in the menu system, or to change audio and video settings.
2 3 4 2 5 6 7 3
4 MENU
Use this button to turn the TV's menu system on and off.
5 RECALL
Press this button to display the channel number.
6 ADD/ERA.
Use this button to add a channel to the TV's memory or erase the channel from memory.
7 MUTE
Use to turn the TV's sound on and off.
8
8 0-9
Use these buttons to change channels.
9 SLEEP
Use this button to program the TV to turn off after a certain time.
9 11 12
10 13
10 PREV. CH
Press this button to return to the previous channel you were watching. If you have set Favorite Ch, this key operates to Favorite function.
11 TV/VIDEO
Use this button to select TV or VIDEO mode.
12 AUTO. PICT
Press this button to return the TV's video settings to their original level.
13 AIR/CABLE
Use the button to set up your TV to receive signals from an antenna (AIR) or a cable system (CABLE).
7
CONTROL VIEW
MONO MODEL
STEREO MODEL
Overview of Your Equipment
Your TV comes with a remote control. The section below summarizes the buttons, controls, and terminals that you will use with your TV.
Your TV's Front Panel 1 POWER
Use this button to turn your TV on or off.
2 VIDEO IN jack Use this jack to receive a video signal from another A/V component. 3 AUDIO IN jack
MONO MODEL use this jack to receive an audio signal from another A/V component. But, STEREO MODEL use this jack to receive audio L/R signal from another A/V component.
4 EARPHONE IN jack
Use this jack to receive a audio signal from your TV.
5 STAND-BY (red) indicator
This indicator lights up when the power is off.
6 Remote control receiver
This receiver receives a signal from your remote control. Don't block it.
7 8
CH
Use these buttons to change channels on your TV, or to select items in the menu system.
VOL
Use these buttons to change your TV's volume, to activate selections in the menu system, or to change audio and video settings.
9 MENU
Use this button to turn the TV's menu system on and off. MONO MODEL
POWER VIDEO AUDIO EARPHONE STAND-BY CH VOL MENU
STEREO MODEL
AUDIO
POWER
VIDEO L
R EARPHONE STAND-BY
CH
VOL
MENU
6
REMOTE CONTROL UNIT
1 POWER
Use this button to turn your TV on or off.
2
CH
Use these buttons to change channels on your TV, or select items in the menu system.
1
3
VOL
Use these buttons to change your TV's volume, to activate selections in the menu system, or to change audio and video settings.
2 3 4 2 5 6 7 3
4 MENU
Use this button to turn the TV's menu system on and off.
5 RECALL
Press this button to display the channel number.
6 ADD/ERA.
Use this button to add a channel to the TV's memory or erase the channel from memory.
7 MUTE
Use to turn the TV's sound on and off.
8
8 0-9
Use these buttons to change channels.
9 SLEEP
Use this button to program the TV to turn off after a certain time.
9 11 12
10 13
10 PREV. CH
Press this button to return to the previous channel you were watching. If you have set Favorite Ch, this key operates to Favorite function.
11 TV/VIDEO
Use this button to select TV or VIDEO mode.
12 AUTO. PICT
Press this button to return the TV's video settings to their original level.
13 AIR/CABLE
Use the button to set up your TV to receive signals from an antenna (AIR) or a cable system (CABLE).
7
IMPORTANT SERVICE NOTES
1. X-RAY RADIATION PRECAUTION
1) Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high voltage must not be above the specified limit. The nominal value of the high voltage of this receiver is 24.4kv at zero beam current (minimum brightness) under a 120V AC power source. The high voltage must not, under any circumstances, exceed 27kv (28.5kv). Each time a receiver requires servicing, the high voltage should be checked following the HIGH VOLTAGE CHECK procedure on page 6 of this manual. It is recommended as a parts of the service record. It is important to use an accurate 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 circuit is properly functioning, following the X-RADIATION PROTECTION CIRCUIT CHECK procedure on page 6 of this manual. 3) 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. 4) Some parts in this receiver have special safety-related characteristics for X-RAY RADIATION protection. For continued safety, parts replacement should be undertaken only after referring to the PRODUCT SAFETY NOTICE below. tion transformer during this check). Use an AC voltmeter having 5000 ohms per volt or more sensitivity in the following manner. Connect at 1500 ohm 10 watt resistor, paralleled by a 0.15 mfd. AC type capacitor, between a known good earth ground (water pipe, conduit etc.) and the exposed metallic parts, one at a time. Measure the AC voltage across the combination of 1500 ohm resistor and 0.15 mfd capacitor. Voltage measured must not exceed 0.3 volts RMS. This corresponds to 0.2 millliamp. AC. Any value exceeding the limit constitutes a potential shock hazard and must be corrected immediately.
AC VOLT METER
0.15MFD 1500 ohm 10watt Place this probe on each exposed metallic part.
Good earth ground such as d water pipe, conduit, etc.
3. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These characteristics are often passed unnoticed by a visual inspection and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual and its supplements; electrical components having such features 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 carefully. The use of substitute replacement parts which do not have the same safety characteristics as specified in the parts list may create Xray radiation or other hazards.
2. SAFETY PRECAUTION
WARNING : Service should not be attempted by anyone
unfamiliar with the necessary precaution on this receiver. The following are the necessary precaution to be observed before servicing. 1) Since the chassis of this receiver has hazardous potential to ground whenever the receiver is plugged in (floating chassis), an isolation transformer must be used during servicing to avoid shock hazard. 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 fragments will be violently expelled. Use shatterproof goggles and keep picture tube away from the body while handling. 3) When placing chassis in the cabinet, always be certain that all the protective devices are put back in place, such as; nonmetallic control knobs, insulating covers, shields, isolation resistor-capacitor network, etc. 4) Before returning the set to the customer, always perform an AC leakage current 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 is safe to operate without danger of electrical shock. Plug the AC line cord directly into a 120V AC outlet (do not use a line isolaMinimum brightness
4. SERVICE NOTES
1) When replacing parts or circuit boards, clamp or bend the lead wires to terminals before soldering. 2) When replacing a high wattage resistor (metal oxide film resistor) in the circuit board, keep the resistor min 1/2 inch away form circuit board. 3) Keep wires away from high voltage or high temperature components.
8
9
GENERAL ADJUSTMENTS
1. GENERAL
In the majority of cases, all color televisions will need only slight touch-up adjustment upon installation. Check the basic characteristics such as height, focus and sub- basic characteristics such as height, focus and sub- bright. Observe the picture for good black and white details without objectionable color shading. If color shading is evident, demagnetize the receiver. If color shading still persists, perform purity and convergence adjustments. This should be all that is necessary to achieve Optimum receiver performance.
7. X-RADIATION PROTECTION CIRCUIT TEST When service has been performed on the horizontal deflection system, high voltage system or B+system. the X-RADIATION protection circuit must be tested for proper operation as follows:
1) Operate receiver for at least 15 minutes at 120V AC line. 2) Adjust all customer controls for normal picture and sound. 3) Short R411(X-RAY Short test), and remove short clip. 4) If the operation of horizontal osc. does not stop in step The circuit must be repaired, before the set is returned to the customer.
2. SCREEN ADJUSTMENT
1) Turn on TV 2) Press the S2 key of Service Remocon to make the One Horizontal Line 3) Adjust the Screen adj. VR of FBT so that the One Horizontal Line may be cut off. 4) Press the S2 key of Servic Remocon to be normal.
8. White balance ADJUSTMENT
1) Press the S8 key of SERVICE REMOCON, select W/B 2) Adjust the R/G/B BIAS of Low BEAM in order that the R/G/B BIAS of Low BEAM may meet with coordinates. 3) Adjust the R/B DRIVE of High BEAM in order that the R/B DRIVE of High BEAM may meet with coordinates. 4) Confirm the LOW BEAM, HIGH BEAM alternately. 5) Press the RECALL key to store.
3. FOCUS ADJUSTMENT
1) Receive the Retma Pattern. 2) Adjust the FOCUS adj. VR to optain the clearest picture.
9. SUB-BRIGHTNESS ADJUSTMENT 4. HORIZONTAL CENTER ADJUSTMENT
1) Receive the Retma Pattern. 2) Press the S6(59H) key of Service Remocon, select H.Phase, then adjust step so that the L/R Width of picture be alike. 3) Press the RECALL key to store. 4) Initial value of D.P : 5 1) Receive the Retma Pattern. 2) Press the S9(5CH) key of Service Remocon, adjust Bright in order that the gradation pattern may set 18%. 3) Press the RECALL key to store. 4) Initial value of D.P :25
5. VERTICAL CENTER ADJUSTMENT
1) Receive the Retma Pattern. 2) Press the S6(59H) key of Service Remocon, select V.DC, then adjust V.DC so that the horizontal line of RETMA PATTERN'S center may meet with the mechanical CENTER of CRT. 3) Press the RECAL key to store. 4) Initial value of D.P:35
6. VERTICAL HIGHT ADJUSTMENT
1) Receive the Retma Pattern. 2) Press the S6(59H) key of Service Remocon, select V.Size, then adjust V.Size so that the center of circumference of big circle may meet with the upper and lower sides of the screen. 3) Press the RECALL key to store. 4) Initial of value of D.P :35
10
10. CONVERGENCE POSITIONING
MAGNET
ASSEMBLY
8) Check the purity of the red and blue raster by adjusting the BIAS controls. 9) Obtain a white raster, referring to White Bodance ADJUSTMENT 10) Proceed with convergence adjustment.
If Convergence magnet assembly and rubber wedges need mechanical positioning follow figure 2.
10-1. COLOR PURITY ADJUSTMENT
NOTE : Before attempting any purity adjustments, the
receiver should be operated for at least 15 minutes. 1) Demagnetize the picture tube with a degaussing coil. 2) Adjust the CONTRAST and BRIGHTNESS controls to maximum 3) Adjust RED and BLUE Bias controls Service Remocon to provide only a green raster. Adjust the GREEN BIAS control Service Remocon if necessary. 4) Loosen the clamp screw holding the yoke, and slide the yoke backward to provide vertical green belt(zone)in the picture screen. 5) Remove the Rubber Wedges. 6) Rotate and spread the tabs of the purity magnet (See figure 2) around the neck of the picture tube until the green belt is in the center of the screen. At the same time, center the raster vertically. 7) Move the yoke slowly forward until a uniform green screen is obtained. Tighten the clamp screw of the yoke temporarily.
DEFLECTION YOKE CONVERGENCE MAGNET ASS'Y TEMPORARY MOUNTING RUBBER WEDGES
30
30
RUBBER WEDGES ADHESIVE
30
PICTURE TUBE
GLASS CLOTH TAPE
DEF. YOKE
Fig. 2 Rubber Wedges Location
11
10-2. CONVERGENCE ADJUSTMENTS
B. CIRCUMFERENCE CONVERGENCE ADJUSTMENT
NOTE : Before attempting any purity adjustments, the
receiver should be operated for at least 15 minutes. A. CENTER CONVERGENCE ADJUSTMENT 1) Receive crosshatch pattern with a crosshatch signal generator. 2) Adjust the BRIGHTNESS and CONTRAST Controls for a good picture. 3) Adjust two tabs of the 4-Pole Magnets to change the angle between them (See Fig. 3) and superimpose red and blue vertical lines in the center area of the picture screen. (See Fig. 4) 4) Turn both tabs at the same time keeping their angles constant to superimpose red and blue horizontal lines at the center of the screen. (See Fig. 4) 5) Adjust two tabs of 6-Pole Magnets to superimpose red/blue line with green on top of each other. Adjusting the angle affects the vertical lines and rotating both magnets affects the horizontal lines. 6) Repeat adjustments 3), 4), 5) keeping in mind red, green and blue movement, because 4-Pole Magnets and 6-Pole Magnets interact and make dot movement complex.
NOTE : This adjustment requires Rubber Wedge Kit.
1) Loosen the clamping screw on deflection yoke to allow the yoke to tilt. 2) Place a wedge as shown in figure 2 temporarily. (Do not remove cover paper on adhesive part of the wedge.) 3) Tilt front of the deflection yoke up or down to obtain better convergence in circumference. (See Fig. 4) Push the mounting wedge into the space between picture and the yoke to hold the yoke temporarily. 4) Place other wedge into bottom space and remove the cover paper to stick. 5) Tilt front of the yoke right or left to obtain better convergence in cicumference. (See Fig. 4) 6) Hold the yoke position and put another wedge in either upper space. Remove cover paper and stick the wedge on picture tube to hold the yoke. 7) Detach the temporarily mounted wedge and put it in another upper space. Stick it on picture tube to fix the yoke. 8) After placing three wedges, re-check overall convergence. Tighten the screw firmly to hold the yoke tightly in place. 9) Stick 3 adhesive tapes on wedges as shown in figure32.
4-POLE MAGNETS PURITY MAGNETS 4DJUST THE ANGLE (VERTICAL LINES)
CONSTANT
CONVERGENCE MAGNET ASSEMBLY
Fig. 3
BLUE RED RED/BLUE GRN
B G R
ROTATE TWO TABS AT THE SAME TIME (HORIZONTAL LINES)
ADJUSTMENT OF MAGNET
B G R B G R BGR R G B
BGR
BLUE RED
RED/BLUE GRN
R G B
R G B
4-Pole Magnets Movement
6-Pole Magnets Movement Incline the Yoke up(or down) Incline the Yoke right(or left)
Center Convergence by Convergence Magnets
Circumference Convergence by DEF. Yoke
Fig. 4 Dot Movement Pattern
12
11. APC DET & PLL Tunning ADJUSTMENT
1) Receive the signal of RF 100% Full Color bar 85dBuV. 2) Press the S5(58H) key of Service Remocon, then execute Auto adj Start. 3) Confirm the OSD of Auto adj. OK. 4) If it was Auto adj. NG, Receive the signal of adjacent channel, then perform Auto adj. Start again. 5) Press the RECALL key to store. (Initial value of D.P APC:30, PLL:40)
12. RF AGC ADJUSTMENT
1) Receive the attenuate signal of RF 100% Full Color Bar 60dBuV. 2) Connect Scope to TP101(OR P101). 3) Press the S5 key of Service Remocon, select RF AGC.D, then adjust the maximum voltage of Scope to attenuate 1V. (Initial value of the maximum voltage : About 7V) For example if initial maximum voltage is 7V, adjust it to 6V 4) Press the RECALL key to store. (Initial value of D.P :25)
13). Stereo/Sap ADJUSTMENT
1) Receive the ZENITH MTS signal of 1KHz(OR 3KHz)CH. 2) Press the S10(5D) key of Service Remocon, select Auto Off, then execute Auto on. 3) Press the RECALL key to store. 4) Slect L ONLY OR R ONLY Channel, then confirm stereo Seperation.
If you have only User Remocon, A way of using is as follows; 1) Press the 1 key 2) Press the MUTE key 3) Press the RECALL Key 4) Press the MUTE key then the Service mode will appear. 5) Use the CH buttons to select the mode you wish to adjust.
1
MUTE
RECALL
MUTE
13
OPERATION CHARACTERISTICS OF POWER BLOCK(I801)
This chassis designed for free voltage(AC 100V ~ AC 220V) power. power block contains power IC, SMPS transformer and several passive components. The power IS STR-S5707 has power transistor. oscillator circuit, voltage comparator circuit, thermal protection circuit, OCP(over current protection)circuit inside.
1. STR-S5707 BLOCK DIAGRAM
2. PIN DESCRIPTION
PIN NO 1 2 3 4 5 6 7 8 9 SYMBOL C GND B SINK OCP INH F/B(SENS) DRIVE Vin NAME COLLECTOR GROUND BASE SINK OVER CURRENT PROTECTION INHIBIT/LATCH FEED BACK(SENSING)INPUT DRIVE Vin FUNCTION POWER TRANSISTOR COLLECTOR GROUND(POWER TRANSISTOR EMITTER) POWER TRANSISTOR BASE BASE URRENT(Is) INPUT OVERCURRENT SENSING SIGNAL INPUT SYNC, OFF TIME/LATCH CIRCUIT CONTROL INPUT CONSTANT VOLTAGE CONTROL SIGNAL INPUT BASE DRIVE CURRENT(Id)OUTPUT SUPPLY VOLTAGE FOR CONTROL CIRCUIT
3. OTHER FUNCTION
Symbol OVP TSD Function Built-in Overvoltage Protection Circuit Built-in Thermal Shutdown Circuit
14
4. EXPLANATION OF CIRCUIT OPERATION
1) VIN terminal, start-up circuit A Start-up circuit is to start and stop a operation of a control IC by detecting a voltage appearing at a VIN terminal(pin9).At start up of a power supply, when a voltage at the VIN terminal reaches to 8V by charging up C809 by the function of a start-up resistor, Rs, a control circuit starts operating by the function of the start-up circuit. As shown in Fig. 2, since a circuit current is suppressed 200 maximum (at VIN = 7.5V) until the control circuit starts its operation. After the control circuit starts its operation, power source is obtained by smoothing voltage appearing at L1 winding. Once the control circuit starts operating, as its voltage doesn't reach the fixed voltage at once, VIN terminal voltage starts dropping. However, as a shut-down voltage is set low(at 4.9V), while VIN terminal voltage reaches a shutdown voltage, L1 winding voltage reaches the fixed voltage earlier so that the control circuit can continue on operating.
2) Oscillator, F/B terminal voltage (Pin #7) A oscillator generates pulse signals which turns a power transistor on and off by making use of charge and discharge of C1 and C2 incorporated in the Hybrid IC. Constant voltage control of a switch-mode power supply is performed by changing both ON-time and OFF-time except when the load is light (ex. remote control stand-by mode of TVs). Fig. 4 shows how the oscillator works when the Hybrid IC independently operates (with no F/B nor INH signals). When the power thransistor is on, C2 Is charged to the set voltage (approx 2.3V at Ta = 25 ). On the other hand, C1 starts charging up through R1 from almost OV and the voltage across C1 reaches approx. 0.75V (Tc = 25 ). the output from the oscillator is reversed and the power transistor turns off. At the same time C1 is quickly discharged by the function of a internal circuit of the oscillator and the voltage across it decreases to almost OV. When the power transistor turns off, C2 starts discharging through R2 and the voltage across C2 decreases with the inclination determined by the product of C2 decreases to about 1V. the output from the oscillator is reversed again and the transistor consequently turns on. The power transistor continues turning on and off by repeating the above-mentioned operations.
15
As the circuit in Fig. 3 shows, the ON-time is controlled by changing a current charged by C1, which is as the result of that the detection winding (L1), which detects a change of voltage in a secondary side, connected to the sensing terminal (Pin No. 7) has the current in accordance with an output signal from an output voltage detection circuit (an error amplifier) built in. As an AC input voltage to the power supply gets the higher and a load current the smaller, the current flowing to the SENS terminal gets the larger, and the ON-time gets the shorter.
3) Function of INH terminal (Pin #6), control OFF-time Signal to the INH terminal is used as inputs to COMP.1 and COMP.2 inside of the control IC.A threshold voltage of COMP.1 VTH1 is set at 0.75V (Ta = 25 ) and an input signal to a drive circuit becomes almost OV (the power transistor is in OFF mode) when a voltage at the INH terminal reaches the VTH1. As long as the INH terminal voltage does not get lower than VTH1. the power transistor sustains OFF mode. On the other hand, a threshold voltage of COMP.2 VTH2, is set at 1.5V (Ta = 25 ). When the INH terminal voltage reaches VTH2, an output from COMP.2 reverses and, as a result, C2, the OFF-tim of the oscillator which has been determined by the product of C2 and R2 ( 55 sec) can be quicker up to approx. 2 sec. As long as the INH terminal voltage does not get lower than VTH2, A Voltage across C2 stays at almost 0V and a output from the oscillator keeps the power transistor being on. The relation between the INH terminal voltage and the function of the oscillator described above is shown in Fig. 6 and FIg. 7
16
4) Quasi-resonant operation By inputting a voltage signal which is synchronized with the energy discharge time of a secondary winding of a transformer to the. INH terminal, quasi-resonant operation can be achieved. As shown in Fig. 8, the voltage of L1 winding which is synchronized. with the energy discharge time of a secondary winding. S1. shall be input to the INH terminal through D804 and R809. Since VTH2 is set at 1.5V typical, a voltage at the INH terminal. VINH, shall be set at
Fig. 9 shows waveforms of VCE, Ic and VINH of the transistor, voltage across C807 in the oscillator as well as an output from the oscillator when operating in quasi-resonant mode.
when the power transistor turns off and a voltage than VTH2 is applied to the INH terminal, C807 immediately discharges and then starts charging again. Even after the discharge of energy of a secondary winding is completed, VINH does not immediately increases. When it gets lower than VTH2 after the time,tr, which is determined by the production of internal impedance of the IC and CINH, has past, the transistor turns on.
17
5) Drive circuit The STR-S5707 applies the proportional drive system in order to minimize turn-on and saturation loss, and storage time. In the conventional RCC system, turn-on loss and switching noise due to the surge current appearing when the power transistor turns on are high as because the transistor is driven by the drive current shown in FIg. 10-1. In addition, since is decreases linearly when the transistor turn off and a peak value of lB2 is not large, the storage time is long and the VCE(SAT) voltage is high, which results in large turn-off loss. The circuit and the waveforms of the proportional drive system which is applied to the STR-S5707 in order to reduce these switching loss and shorten the storage time are shown in Fig. 10-2 respectively.
18
6) OCP (overcurrent protection)function Overcurrent protection is performed pulse by directly detecting collector current of the power transistor. Configuration of the OCP circuit is shown in. Detecting voltage is set to-1V below a reference point of GND (ground). In addition, since the detecting voltage is set by a comparator, very stable characteristics against temperature is achieved and drift of the deteting voltage against temperature change is almost OV.
7) Latch circuit It is a circuit which sustains an output from the oscillator low and stops operation of the power supply when overvoltage protection (OVP) circuit and thermal shutdown (TSD) circuit are in operation. As the sustaining current of the latch circuit is 500 maximum when VIN terminal voltage is 4V. the power supply circuit sustains the off state as long as current of 500 maximum flows to VIN terminal from a start-up resistor. In order to prevent a malfunction to be caused by a noise and so on, delay time is provided by C1 incorporated in the IC and, therefore, the latch circuit operates when the OVP of TSD circuit is in operation, of an external signal input is provided. for about 10 sec or longer. In addition, even after the latch circuit start operating, the constant voltage regulator (Reg) circuit is in operation and the circuit current is at high level. As a result. VIN terminal voltage rapidly decreases. When VIN terminal voltage becomes lower than the shutdown voltage, VIN(OFF), (4.9V typical), it starts in-creasing as the circuit current is below 500 . When it reaches the ON-state voltage. VIN(ON), (8V typical), VIN terminal voltage starts decreasing because the circuit current increases again.
19
when the latch circuit is on. VIN terminal voltage increases and decreases with-in the range from 4.9V typical to 8V typical and is prevented from abnormally rising. Fig. 12 shows an example of VIN terminal voltage waveform. Cancellation of the latch-is done by decreasing VIN terminal voltage below 3.3V. The power supply can be restarted disconnecting an AC input to the power supply once.
8) Thermal shutdown, circuit It is a circuit to trigger the latch circuit when the frame temperature of the IC exceeds 150 (typical). Although the temperature is actually sensed at the control chip. lt works against overheating of the power transistor as the power transistor and the control IC are mounted on the same lead frame. 9) Overvoltage protection circuit lt is a circuit to trigger the latch circuit when Vin terminal voltage exceeds 11V (typical). Although it basically functions as protection of Vin terminal against overvoltage, since Vin terminal is usually supplied from the drive winding of the transformer and the voltage is proportional to the output voltage, it also functions against the overvoltage of secondary output which causes when the control circuit opens or in some other events.
20
5. OCP (OVER CURRENT PROTECTION) CIRCUIT
This circuit is designed to protect the circuit from over current due to overload occurred at the rear of 123[V] line 1) CONFIGURATION OF OCP CIRCUIT
2) EXPLANATION OF THE OPERATION There is very little voltage drop at R423 of 123[V] line. In case that the overload occurs at the rear of 123[V] line, the increase of the voltage drop at R423 bring down the base voltage of the Q407 os as to drive the Q407 Because of the overload at the rear of the R423, the voltage of the point decreases. And this makes Q407 turn on so that a voltage is applied to the #31 of l701. In case that OCP operates by the #31 of the l1701, the set is protected by power off (#42 of l1701 LOW).
21
TROUBLE SHOOTING CHART S NO POWER (NO OUTPUT SECOND POWER)
L801 LINE FIL TER
D801
+
T801 SMPS TRANS
PBS208GU
CHECK F801 250V A CHECK SUPPLY VOLTAGE VIN 9 SENS 7 CHECK FEED BACK INPUT
CHECK R801 R CEMENT
R802
I801
COLEECTOR 1
DON'T OPERATE POWER ON
I1702 VDD 8 CLK 6 DATA 5 CHECK CLOCK PULSE ST-BY: OV POER ON: CHECK DC 5V I701 CHECK DC 5V 1 EE-CLK 3 M-CLK 4 M-DATA 10 CHECK DATA PULSE ST-BY: 5V POWER ON I501 H. VCC 21 BUS 43 INTERFACE 44 H. OUT 23 CHECK H-OUT PUSLE CHECK VOLT. ST-BY: L POWER ON: H T401 X701 CHECK DC 5V 11 12 VDD 16 RESET 42 POWER
RC401 ST-BY: OV POWER ON:
22
NO PICTURE
CHECK THE WAVE FORM OF U101 #IF OK NO GOTO A GOTO B
A
CHECK VIDEO SIGNAL
4.6V 2.6V
I501
Z502 RC539 L505
45 VIDEO OUTPUT 47 INTERNAL VIDEO INPUT 42 SELECT VIDEO OUTPUT 32 ABL 33 ACL 30 R OUTPUT 29 G OUTPUT 28 B OUTPUT 4
CHECK HEATER VTG 6.3Vms T 402 CHECK 7.4V LINE
HEATER 180 V ABL
D405 D402
2Vp-p
BRIGHT CONTRAST
CHECK 180V LINE
RC549
4.6V 1.6V
CHECK R/G/B SIGNAL
3Vp-p
CC511 0.1MF
B
SF 501
SAW FILTER 11 10
I501
I702
5 DATA 6 CLK
6 RF AGC OUTPUT
CHECK RF AGC OUTPUT VTG DC 5V - 8V
CHECK CLK, EN, DATA SIGNAL I701
U101 CHECK DC 5V, 9V 33V LINE
IF 5V 9V 33V AGC CL
5 T-CLK 6 T-DATA
DA EN 7 M-EN
23
NO SOUND
MONO MODEL STEREO MODEL GOTO C GOTO D
C
Z503 Z502 RC539 L505
I501
45 VIDEO OUTPUT 47 INTERNAL VIDEO INPUT 49 SOUND IF INPUT
CHECK AUDIO OUTPUT SIGNAL I602
8 -A-OUT 6 +A-OUT
CHECK AUDIO INPUT SIGNAL
3 A-IN
2
CHECK SOUND B+ DC 12V
51 AUDIO OUTPUT
D
CHECK DC 9V CHECK RESONATOR Z601
23
I601
Z2 Z1 RC1 L1
I501
45 VIDEO OUTPUT 47 INTERNAL VIDEO INPUT
30 CES 1 OUT L 42 OUT R 24 COMP IN
CHECK INPUT COMP SIGNAL
CHECK SOUND IF SIGNAL
49 SOUND IF INPUT
7 AUDIO OUTPUT
CHECK AUDIO OUTPUT SIGNAL
CHECK R/L-INPUT SIGNAL
CHECK SOUND B+ DC 12V
I603
3 4 R-IN 2 L-IN 8 +R-OUT
11 -L-OUT 13 +L-OUT
24
CH DON'T STOP
CHECK INPUT SIGNAL CONDITIONS
GOOD BAD
GOTO E
LOSS OF SIGNL OR WEEK SIGNAL
E
SF 501
SAW FILTER 11 10
I501
2 3
CHECK VCO COIL
L501
I702
5 DATA 6 CLK
6 RF AGC OUTPUT
CHECK RF AGC OUTPUT VTC DC 5V - 8V
CHECK CLK, EN, DATA SIGNAL I701
U101 CHECK DC 5V, 9V 33V LINE
IF 5V 9V 33V AGC CL DA EN
5 T-CLK 6 T-DATA 7 M-EN
NO COLOR
CHECK VIDEO SIGNAL
I501
40 COLOR
FILTER CHECK R/G/B SIGNAL
42 SELECT VIDEO OUTPUT 32 ABL 33 ACL 4
BRIGHT CONTRAST
CHECK 7.4V LINE
4.6V 1.6V 3Vp-p
30 R OUTPUT 29 G OUTPUT 28 B OUTPUT 15
X501
CHECK CRYSTAL
25
NO VERTICAL DEFLECTION
CHECK V.OUT SUGBAK I301
INV 5 V.D.Y OUTPUT 2
17 V.OUT CHECK SYNK SIGNAL 37 SYNC
CHECK OUTPUT
VCC 6
CHECK DC 25V
26
ON SCREEN DISPLAY DOES NOT OPERATE
CHECK FOR,60Hz / VS
19 20 10
CHECK FOR, 15, 734Hz IC701
21 22 23 24 11
R G B BL IF OSD DOES NOT OPERATE, CHANGE IC701 R, G, B, BL CHANGE
/ HS
OSC CHECK
REMOTE CONTROL DOES NOT OPERATE
lL701 REMOCON SENSOR GND 5V OUT
CHECK WAVEFORM
IC701
34
27
DESCRIPTION OF SEMICONDUCTORS
LA76070 (BUS CONTROL, VIF/SIF/Y/C/DEF)
I501 LA76070A BUS CONTROL, VIF/SIF/Y/C/DEF
28
PIN ASSIGN OF IC LC864728V(I701)
OUTPUT
NOTE) XT is used 32.768 KHZ X-TAL
29
PIN ASSIGN OF IC TDA 7057Q (I603)
2 X 3 W sterei BTL audio output amplifier
PINNING SYMBOL SGND1 Vi(1) Vp Vi(p) SGND2 n.c. n.c. OUT2+ PGND2 OUT2OUT1PGND1 OUT1+
PIN 1 2 3 4 5 6 7 8 9 10 11 12 13
DESCRIPTION signal ground 1 vollage input 1 positive supply voltage voltage input 2 signal ground 2 not connected not connected positive output 2 power ground 2 negative output 2 negative output 1 power ground 1 positive output 1
PIN ASSIGN OF IC LA7841 (I301)
30
PIN ASSIGN OF IC TDA 9852 (I601)
I2C-bus Controlled BTSC stereo/SAP decoder and audio processor
PINNING SYMBOL
OUTL LDL VIL EOL CAV VREF LIL AVL SOL LOL CTW CTS CW CS VEO VEI CNR CM CDEC GND AGND DGND SDA SCL VCC COMP VCAP CP1 CP2 CPH CADJ CER CMO CSS LOR SOR AVR LIR CPS2 CPS1 EOR VIR LDR OUTR n.c PINS SDIP42 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 QFP44 40 41 42 43 44 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
DESCRIPTION
output, left channel input loudness, left channel input volume, left channel output effects, left channel automatic volume control capacitor reference voltage 0.5Vcc input line control, left channel input automatic volume control, left channel output selector, left channel output line control, left channel capacitor timing wideband for dbx capacitor timing spectral for dbx capacitor wideband for dbx capacitor spectral for dbx variable emphasis output for dbx variable emphasis input for dbx capacitor noise reduction for dbx capacitor mute for SAP capacitor DC-decoupling for SAP ground analog ground digital ground serial data input/output(l2C-bus) serial clock input(l2C-bus) supply voltage composite input signal capacitor for electronic filtering of supply capacitor for pilot detector capacitor for pilot detector capacitor for phase detector capacitor for filter adjustment ceramic resonator capacitor DC-decoupling mono capacitor DC-decoupling stereo/SAP output line control, right channel output selector, right channel input automatic volume control, right channel input line control, right channel capacitor 2 pseudo function capacitor 1 pseudo function output effects, right channel input volume, right channel input loudness, right channel output,right channel not connected
31
Caution: In this Service 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)
PARTS LIST
(DTQ-21T1FS)
Loc ZZ100 ZZ110 30 40 50 60 10000 M821 ZZ120 M211 M541 M591 M781 ZZ130 10 20 M641 M801 M811 M821 ZZ131 ZZ132 ZZ140 M191 M201A M201B M201C M211A M211B M481 M481A M561 M681 M781 SP01A SP02A V901 ZZ200 M201 ZZ202 PA601 PA602 SP01 SP02 A001 C101 C102 C103 C104 C301 C302 C303 Item Code 48B3225C04 PTACPWJ591 486A716200 4859000240 4850A00650 4850A02510 48586054K1 4858213800 PTBCSHJ596 4852147001 4855415800 4855930923 4857817612 PTPKCPJ596 6520010100 6520010200 6520010100 485804763B 4858179000 4858261100 58G0000110 48519A5210 PTCACAJ596 4851926801 4856013301 4856214902 4856013303 7122401412 7122401412 4854848001 4856716000 48556159SS 4856812001 4857821204 7128301011 7128301011 4859608761 PTFMSJJ596 4852060402 PTSPPWJ591 4850703S51 4850703S53 4858306810 4858306810 4859812792 CEXF1H229V CEXF1C471V CEXF1E470V CEXF1H109V CMXB1H103J CEXF1H479V CEXF1H100V Item Name TRANSMITTER REMOCON ACCESSORY AS BATTERY ADAPTER TRANS ANT MATCHING ANT ROD MANUAL INSTRUCTION BAG INSTRUCTION COVER BACK AS COVER BACK SPEC PLATE DECO TERM CLOTH BLACK PACKING AS STAPLE PIN STAPLE PIN STAPLE PIN BOX CARTON PAD BAG P.E COIL DEGAUSSING CRT GROUND AS CABINET AS BUTTON CTRL AS SCREW CRT FIXING AS WASHER RUBBER SCREW CRT FIXING AS SCREW TAPPING SCREW TAPPING BUTTON POWER SPRING MARK BRAND TIE CABLE CLOTH BLACK SCREW TAPPING SCREW TAPPING CRT MASK FRONT AS MASK FRONT SPEAKER AS CONN AS CONN AS SPEAKER SPEAKER PCB MAIN C ELECTRO C ELECTRO C ELECTRO C ELECTRO C MYLAR C ELECTRO C ELECTRO Description R-25C04 DTQ-20T1FS AAA 2P15A 300V(D=4.0) IMT-060 (CAPRISTOR OUT) B S3BW216B (L=600 MM) DTM-2082CW L.D.P.E T0.05X250X400 DTQ-21T1FS HIPS BK 150ART P/E FILM (C/TV) PVC T0.2 FELT T0.7 L=250 DTQ-21T1FS 18M/M J D O #3417 18M/M J D O DW-3A EPS 21T1 LDPE T0.02X1200X1000000 DC-2080 2101H-1015-1P DTQ-21T1FS 4932801+5530201 30X140 YL CR T2.0 30X250 YL T2S TRS 4X14 MFZN BK T2S TRS 4X14 MFZN BK ABS BK SWPA PIE0.5 SILVER ETCHING DIA-CUTTIN NYLON66 DA100 FELT 220X12XT2 T2S WAS 3X10 MFZN T2S WAS 3X10 MFZN A51JSW41X01 P00 DTQ-21T1FS HIPS BK DTQ-20T1FS YH025-03+35098+ULW=300 YH025-03+35098+ULW=500 3W 16 OHM F2035C03-3 3W 16 OHM F2035C03-3 246X330 S1B 50V RSS 2.2MF (5X11) TP 16V RSS 470MF (10X12.5)TP 25V RSS 47MF (5X11) TP 50V RSS 1MF (5X11) TP 50V EU 0.01MF J (TP) 50V RSS 4.7MF (5X11) TP 50V RSS 10MF (5X11) TP
51
PARTS LIST
(DTQ-21T1FS)
Loc C304 C305 C307 C308 C309 C310 C311 C401 C402 C403 C404 C405 C406 C407 C408 C409 C410 C411 C412 C413 C414 C415 C416 C417 C420 C421 C444 C501 C503 C507 C508 C510 C511 C513 C514 C515 C517 C518 C519 C520 C522 C524 C531 C532 C533 C537 C542 C543 C544 Item Code CEXF1V471V CEXF1H101V CXSL2H100D CMXL1J104J CEXF1H100V CEXF1E102V CEXD1H229Q CCXB2H222K CEXF1H220V CCYB3A103K CMYH3C722J CEXF2C109V CMYE2D474J CEXF2E100V CEXF1H100V CCXB2H102K CEXF1C222V CCXB2H102K CMXB1H104J CEXF1C471V CEXF1C471V CCXB2H102K CEXF1E101V CEXF2C101V CCXB2H271K CEXF1H479V CCXB3D271K CEXF1H100V CEXF1C102V CEXF1H100V CMXB1H473J CEXF1H109V CMXB1H333J CEXF1H108V CEXF1H108V CEXF1H108V CEXF1E101V CEXF1H109V CMXB1H333J CMXM2A102J CEXF1H339V CEXF1C102V CEXF1H109V CEXF1H109V CEXF1H229V CEXF1H100V CEXF1H478V CEXF1H109V CEXF1H229V Item Name C ELECTRO C ELECTRO C CERA C MYLAR C ELECTRO C ELECTRO C ELECTRO C CERA C ELECTRO C CERA C MYLAR C ELECTRO C MYLAR C ELECTRO C ELECTRO C CERA C ELECTRO C CERA C MYLAR C ELECTRO C ELECTRO C CERA C ELECTRO C ELECTRO C CERA C ELECTRO C CERA C ELECTRO C ELECTRO C ELECTRO C MYLAR C ELECTRO C MYLAR C ELECTRO C ELECTRO C ELECTRO C ELECTRO C ELECTRO C MYLAR C MYLAR C ELECTRO C ELECTRO C ELECTRO C ELECTRO C ELECTRO C ELECTRO C ELECTRO C ELECTRO C ELECTRO Description 35V RSS 470MF (10X20) TP 50V RSS 100MF (8X11.5) TP 500V SL 10PF D (TAPPING) 63V MEU 0.1MF J 50V RSS 10MF (5X11) TP 25V RSS 1000MF (13X20) TP 50V RT 2.2MF (6.3X11) TP 500V B 2200PF K (TAPPING) 50V RSS 22MF (5X11) TP 1KV B 0.01MF K 1.6KV BUP 7200PF J 160V RSS 1MF (6.3X11) TP 200V PU 0.47MF J 250V RSS 10MF (10X20) TP 50V RSS 10MF (5X11) TP 500V B 1000PF K (TAPPING) 16V RSS 2200MF (13X25) TP 500V B 1000PF K (TAPPING) 50V EU 0.1MF J (TP) 16V RSS 470MF (10X12.5)TP 16V RSS 470MF (10X12.5)TP 500V B 1000PF K (TAPPING) 25V RSS 100MF (6.3X11) TP 160V RSS 100MF (16X25) TP 500V B 270PF K (TAPPING) 50V RSS 4.7MF (5X11) TP 2KV B 270PF K (T) 50V RSS 10MF (5X11) TP 16V RSS 1000MF (10X20) TP 50V RSS 10MF (5X11) TP 50V 0.047MF J (TP) 50V RSS 1MF (5X11) TP 50V EU 0.033MF J (TP) 50V RSS 0.1MF (5X11) TP 50V RSS 0.1MF (5X11) TP 50V RSS 0.1MF (5X11) TP 25V RSS 100MF (6.3X11) TP 50V RSS 1MF (5X11) TP 50V EU 0.033MF J (TP) 100V 1000PF J (TP) 50V RSS 3.3MF (5X11) TP 16V RSS 1000MF (10X20) TP 50V RSS 1MF (5X11) TP 50V RSS 1MF (5X11) TP 50V RSS 2.2MF (5X11) TP 50V RSS 10MF (5X11) TP 50V RSS 0.47MF (5X11) TP 50V RSS 1MF (5X11) TP 50V RSS 2.2MF (5X11) TP
52
PARTS LIST
(DTQ-21T1FS)
Loc C601 C602 C603 C605 C606 C607 C608 C609 C610 C611 C612 C613 C614 C615 C616 C618 C619 C620 C621 C622 C623 C624 C625 C626 C627 C628 C629 C630 C632 C633 C634 C636 C637 C640 C641 C704 C706 C708 C709 C711 C801 C802 C803 C804 C805 C806 C807 C808 C809 Item Code CEXF1H470V CEXF1H470V CMXL1J154J CEXF1H229V CEXF1H478V CEXF1E101V CEXF1H229V CEXF1H100V CEXF1H100V CEXF1H109V CEXF1H109V CMXL1J473J CEXF1H100V CMXL1J104J CEXF1H479V CEXF1E101V CEXF1H100V CEXF1E101V CMXL1J474J CMXL1J224J CEXF1H479V CEXF1H100V CEXF1H479V CEXF1H479V CEXF1H229V CMXB1H153J CMXB1H153J CEXF1H229V CMXL1J154J CMXL1J334J CMXL1J334J CEXF1E471V CMXL1J104J CMXB1H223J CMXB1H223J CEXF1E101V CEXF1H100V CEXF1H229V CEXF1H109V CEXF1H100V CL1UC3104M CCXF3A472Z CCXF3A472Z CEYN2G221P CH1BFE222M CBYB3D152K CCXB2H102K CEXF2A100V CEXF1E331V Item Name C ELECTRO C ELECTRO C MYLAR C ELECTRO C ELECTRO C ELECTRO C ELECTRO C ELECTRO C ELECTRO C ELECTRO C ELECTRO C MYLAR C ELECTRO C MYLAR C ELECTRO C ELECTRO C ELECTRO C ELECTRO C MYLAR C MYLAR C ELECTRO C ELECTRO C ELECTRO C ELECTRO C ELECTRO C MYLAR C MYLAR C ELECTRO C MYLAR C MYLAR C MYLAR C ELECTRO C MYLAR C MYLAR C MYLAR C ELECTRO C ELECTRO C ELECTRO C ELECTRO C ELECTRO C LINE ACROSS C CERA C CERA C ELECTRO C CERA AC C CERA C CERA C ELECTRO C ELECTRO Description 50V RSS 47MF (6.3X11) TP 50V RSS 47MF (6.3X11) TP 63V MEU 0.15MF J 50V RSS 2.2MF (5X11) TP 50V RSS 0.47MF (5X11) TP 25V RSS 100MF (6.3X11) TP 50V RSS 2.2MF (5X11) TP 50V RSS 10MF (5X11) TP 50V RSS 10MF (5X11) TP 50V RSS 1MF (5X11) TP 50V RSS 1MF (5X11) TP 63V MEU 0.047MF J 50V RSS 10MF (5X11) TP 63V MEU 0.1MF J 50V RSS 4.7MF (5X11) TP 25V RSS 100MF (6.3X11) TP 50V RSS 10MF (5X11) TP 25V RSS 100MF (6.3X11) TP 63V MEU 0.47MF J 63V MEU 0.22MF J (TP) 50V RSS 4.7MF (5X11) TP 50V RSS 10MF (5X11) TP 50V RSS 4.7MF (5X11) TP 50V RSS 4.7MF (5X11) TP 50V RSS 2.2MF (5X11) TP 50V EU 0.015MF J (TP) 50V EU 0.015MF J (TP) 50V RSS 2.2MF (5X11) TP 63V MEU 0.15MF J 63V MEU 0.33MF J (TP) 63V MEU 0.33MF J (TP) 25V RSS 470MF (10X16) TP 63V MEU 0.1MF J 50V EU 0.022MF J (TP) 50V EU 0.022MF J (TP) 25V RSS 100MF (6.3X11) TP 50V RSS 10MF (5X11) TP 50V RSS 2.2MF (5X11) TP 50V RSS 1MF (5X11) TP 50V RSS 10MF (5X11) TP WORLD AC250V 0.1UF M R.47 1KV F 4700PF Z (T) 1KV F 4700PF Z (T) 400V LHS 220MF (35X30) U/C/V AC400V 2200PF 2KV BL (N) 1500PF 500V B 1000PF K (TAPPING) 100V RSS 10MF (6.3X11) TP 25V RSS 330MF (10X12.5)TP
53
PARTS LIST
(DTQ-21T1FS)
Loc C810 C811 C812 C813 C814 C815 C816 C817 C818 C819 C820 C888 C889 C901 C908 CA01 CA02 CAC01 CAC02 CC101 CC102 CC504 CC505 CC509 CC511 CC512 CC516 CC523 CC530 CC534 CC535 CC536 CC538 CC539 CC544 CC601 CC602 CC604 CC617 CC631 CC701 CC702 CC703 CC705 CC707 CC710 CC712 CC713 CC714 Item Code CCXB3A471K CCXB3A471K CEXF1E221V CCXB3D102K CEYF2C101V CCXB3A102K CEXF1E102V CCXB3A102K CEXF1E471V CEXF1E101V CCXB3A102K CH1BFE222M CCXF3A472Z CBXB3D102K CEXF1H479V CEXF1H229V CEXF1H229V HCBK104KCA HCBK104KCA HCQK101JCA HCQK101JCA HCBK103KCA HCBK103KCA HCBK102KCA HCBK104KCA HCQK160JCA HCBK103KCA HCBK103KCA HCQK561JCA HCQK470JCA HCQK220JCA HCBK103KCA HCQK101JCA HCQK101JCA HCBK103KCA HCQK101JCA HCQK101JCA HCBK822KCA HCBK103KCA HCBK822KCA HCQK180JCA HCQK180JCA HCBK103KCA HCBK103KCA HCBK333KCA HCQK221JCA HCQK101JCA HCQK101JCA HCQK101JCA Item Name C CERA C CERA C ELECTRO C CERA C ELECTRO C CERA C ELECTRO C CERA C ELECTRO C ELECTRO C CERA C CERA AC C CERA C CERA C ELECTRO C ELECTRO C ELECTRO C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA Description 1KV B 470PF K (T) 1KV B 470PF K (T) 25V RSS 220MF (8X11.5) TP 2KV B 1000PF K (TAPPING) 160V RSS 100MF (16X25) 1KV B 1000PF K (TAPPING) 25V RSS 1000MF (13X20) TP 1KV B 1000PF K (TAPPING) 25V RSS 470MF (10X16) TP 25V RSS 100MF (6.3X11) TP 1KV B 1000PF K (TAPPING) U/C/V AC400V 2200PF 1KV F 4700PF Z (T) 2KV BL(N) 1000PF K (T) 50V RSS 4.7MF (5X11) TP 50V RSS 2.2MF (5X11) TP 50V RSS 2.2MF (5X11) TP 50V X7R 0.1MF K 2012 50V X7R 0.1MF K 2012 50V CH 100PF J 2012 50V CH 100PF J 2012 50V X7R 0.01MF K 2012 50V X7R 0.01MF K 2012 50V X7R 1000PF K 2012 50V X7R 0.1MF K 2012 50V CH 16PF J 2012 50V X7R 0.01MF K 2012 50V X7R 0.01MF K 2012 50V CH 560PF J 2012 50V CH 47PF J 2012 50V CH 22PF J 2012 50V X7R 0.01MF K 2012 50V CH 100PF J 2012 50V CH 100PF J 2012 50V X7R 0.01MF K 2012 50V CH 100PF J 2012 50V CH 100PF J 2012 50V X7R 8200PF K 2012 50V X7R 0.01MF K 2012 50V X7R 8200PF K 2012 50V CH 18PF J 2012 50V CH 18PF J 2012 50V X7R 0.01MF K 2012 50V X7R 0.01MF K 2012 50V X7R 0.033MF K 2012 50V CH 220PF J 2012 50V CH 100PF J 2012 50V CH 100PF J 2012 50V CH 100PF J 2012
54
PARTS LIST
(DTQ-21T1FS)
Loc CC715 CC716 CC717 CC718 CC722 Loc CC726 CC902 CC903 CC904 CC908 D101 D102 D103 D104 D301 D401 D402 D403 D404 D405 D406 D407 D408 D409 D412 D501 D504 D601 D701 D703 D740 D741 D801 D802 D803 D804 D805 D806 D807 D808 D809 D810 D901 F801 F801A F801B I301 I301 I301A Item Code HCQK101JCA HCBK104KCA HCBK104KCA HCBK104KCA HCQK101JCA Item Code HCBK103KCA HCQK271JCA HCQK271JCA HCQK271JCA HCQK102JCA DUZ9R1BM-DUZ5R1BM-DUZ33B---DUZ9R1BM-D1N4003--NBYD33GT-NBYD33GT-NBYD33GT-NBYD33GT-NBYD33GT-D1N4148--DUZ7R5BM-D1N4148--DUZ9R1BM-DBY228---DUZ9R1BM-D1N4148--DUZ8R2BM-DUZ3R9B--DKLR114L-D1N4148--DUZ5R1BM-DPBS208GUD1N4937GPD1N4937GPD1N4937GPD1N4937GPDPR3005G-DPR1505G-DPR1505G-DUZ6R2BM-D1N4148--85801065GY 5FKGB4022R 4857415001 4857415001 1LA7841--PTB2SW7101 4857027101 Item Name C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA Item Name C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA C CHIP CERA DIODE ZENER DIODE ZENER DIODE ZENER DIODE ZENER DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE ZENER DIODE DIODE ZENER DIODE DIODE ZENER DIODE DIODE ZENER DIODE ZENER LED DIODE DIODE ZENER DIODE BRIDGE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE ZENER DIODE WIRE COPPER FUSE GLASS TUBE CLIP FUSE CLIP FUSE IC VERTICAL HEAT SINK ASS`Y HEAT SINK Description 50V CH 100PF J 2012 50V X7R 0.1MF K 2012 50V X7R 0.1MF K 2012 50V X7R 0.1MF K 2012 50V CH 100PF J 2012 Description 50V X7R 0.01MF K 2012 50V CH 270PF J 2012 50V CH 270PF J 2012 50V CH 270PF J 2012 50V CH 1000PF J 2012 UZ-9.1BM 9.1V UZ-5.1BM UZ-33B UZ-9.1BM 9.1V 1N4003 (TAPPING) BYD33G-T BYD33G-T BYD33G-T BYD33G-T BYD33G-T 1N4148 (TAPPING) UZ-7.5BM 7.5V 1N4148 (TAPPING) UZ-9.1BM 9.1V BY228 (TAPPING) UZ-9.1BM 9.1V 1N4148 (TAPPING) UZ-8.2B (8.2V) UZ-3.9B KLR114L 1N4148 (TAPPING) UZ-5.1BM PBS208GU-CA 1N4937GP (TAPPING) 1N4937GP (TAPPING) 1N4937GP (TAPPING) 1N4937GP (TAPPING) PR3005G PR1505G PR1505G UZ-6.2BM 6.2V 1N4148 (TAPPING) AWG22 1/0.65 TIN COATING KS MF51 4A 250V NR PFC5000-0702 PFC5000-0702 LA7841 1LA7841--- + 7174301011 SPCC T1.0+SN
55
PARTS LIST
(DTQ-21T1FS)
Loc I301B I501 I601 I603 I603 I603A I603B I701 I702 I801 I801 I801A I801B I802 IL701 J001 J002 J004 J005 J006 J007 J008 J009 J010 J011 J012 J013 J014 J015 J017 J019 J020 J021 J022 J023 J024 J025 J026 J027 J028 J029 J030 J031 J032 J033 J034 J035 J036 Item Code 7174301011 1LA76070A1TDA9852-1TDA7057QPTC2SW6109 4857026109 7174301011 1LC8645G79 124LC02B-1STRS5707PTA2SW6107 4857026107 7174301211 1LTV817C-1TFMW538085801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY Item Name SCREW TAPPTITE IC VIDEO PROCESSOR IC AUDIO PROCESSOR IC AUDIO AMP HEAT SINK ASS`Y HEAT SINK SCREW TAPPTITE IC MICOM IC MEMORY IC POWER HEAT SINK ASS`Y HEAT SINK SCREW TAPPTITE IC PHOTO COUPLER IC PREAMP WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER Description TT2 RND 3X10 MFZN LA76070A TDA9852 TDA7057Q 1TDA7057Q- + 7174301011 AL EX TT2 RND 3X10 MFZN LC864728V-5G79 24LC02B STR-S5707 1STRS5707- + 7174301211 AL EX TT2 RND 3X12 MFZN LTV-817C TFMW5380 AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING AWG22 1/0.65 TIN COATING
56
PARTS LIST
(DTQ-21T1FS)
Loc J037 J038 J040 J041 J042 J043 J044 J045 J046 J047 J049 J050 J051 J052 J053 J055 J058 J060 J101 J102 J103 J301 J302 J303 J305 J306 J310 J402 J403 J404 J405 J408 J409 J410 J411 J501 J502 J503 J504 J505 J506 J507 J509 J601 J602 J603 J604 J605 J606 Item Code 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY 85801065GY Item Name WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPER WIRE COPPE