Related Manuals for Daewoo DTQ-14N2FC
Summary of Contents for Daewoo DTQ-14N2FC
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Page 1: Service Manual
Service Manual Color Television CHASSIS CN-115I NTSC-M SYSTEM MODEL DTQ-14N2FC/FS/FSP DTQ-20N2FC/FS/FSP DTQ-14 J 2FC/FS/FSP D TQ-20J 2FC/FS/FSP DTQ-14N3FC/FS/FSP DTQ-20N3FC/FS/FSP DAEWOO ELECTRONICS CO., LTD. -
Page 2: Electrical Specifications
FEATURES FS (Frequency Synthesizer) Tuning System CATV Ready Monitor Look Design High Focus Minineck CRT ELECTRICAL SPECIFICATIONS POWER INPUT FC SERIES AC 120V 60Hz FS SERIES AC 85V - AC 150V 60Hz FSP SERIES AC 220V 50Hz/60Hz POWER RATING 14” MODELS 20”... -
Page 3: Safety Checks
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO VIDEO PRODUCTS 950ART94 1009 CAUTION SUBJECT : X-RADIATION DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY. NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURER S APPROVAL. 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PERSONNEL COVER UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT MAY THE SUBJECT OF X-RADIATION. - Page 4 Product safety servicing guidelines for color A.C. VOLTMETER 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 0.15µF...
- Page 5 with a meter to be certain that the high voltage does not heat duct, or in the path of heated air flow. exceed the specified value and that it is regulating 2. Avoid conditions of high humidity such as : Outdoor correctly.
- Page 6 CONTROL VIEW POWER Remote Control receiver MENU F-CONNECTOR 300 OHM-75 OHM COUPLING TRANSFORMER 75Ω FROM 75 OHM VHF ANTENNA WITH CABLE OR CABLE TV SYSTEM...
- Page 7 1. 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. 2. Your TV s Front Panel 1. POWER Use this buttom to turn your TV on or off. Use these buttom to change channels on your TV, or to select items in the menu system.
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Page 8: Important Service Notes
IMPORTANT SERVICE NOTES 1. X-RAY RADIATION PRECAUTION tion transformer during this check). Use an AC voltmeter having 5000 ohms per volt or more sensitivi- 1) Excessive high voltage can produce potentially ty in the following manner. hazardous X-RAY RADIATION. To avoid such hazards, the high voltage must not be above the Connect at 1500 ohm 10 watt resistor, paralleled by a specified limit. -
Page 9: Block Diagram
BLOCK DIAGRAM 96. 5. 30 Z101 ASB1 U101 V901 I501 (LA 7674) Q901 SAW FILTER TUNER ANT S/BOX Q903 14” S-90 PLL IC IF/V/C/DEF COLOR 20” RF-AGC PIF SIF AGC AFT E D C SOUND DEC 1702 H.SYNC Q705 EEPROM VIDEO AMP VIDEO AUDIO IN. - Page 10 GENERAL ADJUSTMENTS GENERAL ADJUSTMENTS 1. GENERAL 1) Operate receiver for at least 15 minutes at 120V AC line. In the majority of cases, all color televisions will need only 2) Adjust all customer controls for normal picture and slight touch-up adjustment upon installation. Check the sound.
- Page 11 9. SUB-BRIGHTNESS ADJUSTMENT 10-1. COLOR PURITY ADJUSTMENT NOTE 1) Tune in a color program. : Before attempting any purity adjustments, the receiver should be operated for at least 15 2) Set the CONTRAST control to maximum and the BRI- minutes. GHTNESS control to maximum and the SHARPNESS control to the center position.
- Page 12 10-2. CONVERGENCE ADJUSTMENTS B. CIRCUMFERENCE CONVERGENCE ADJUSTMENT NOTE NOTE : This adjustment requires Rubber Wedge Kit. : Before attempting any purity adjustments, the receiver should be operated for at least 15 1) Loosen the clamping screw on deflection yoke to allow minutes.
- Page 13 11. PICTURE IF/AFT ADJUSTMENTS NOTE : THIS RECEIVER IS TRANSISTORIZED AND SPECIAL CARE MUST BE TAKEN WHEN SERVICING. READ THE FOLLOWING (NOTES BEFORE ATTEMPTING ALIGNMENT) Alignment requires an exacting procedure and should be undertaken only when necessary. Isolation transformer must be used to prevent shock hazard. The test equipment specified or its equivalent is required to perform the alignment properly.
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Page 14: Trouble Shooting Charts
TROUBLE SHOOTING CHARTS NO POWER GO TO DOES Q701(POWER ON/OFF TR) OPERATE? GO TO CHECK CHECK (7.5V IN/OUT VOLTAGES R816 15K OF IC801(130VOLT REG) IN: 150V 2WATT DOES OUT: 130V SHUT DOWN CIRCUIT OPERATE? 103V CHECK TP7 (MAIN B+ LINE) IF #26 NORMAL &... - Page 15 NO PICTURE CHECK THE WAVE FORM OF GO TO IC501 #44 GO TO COMPOSITE VIDEO INPUT IC501 LA 7674 Q501 Y-OUT VIDEO DRIVE Q504 C506 CONTRAST CHECK 180V CHECK KINE BRIGHT CONTROL H. BLANKING (MAX) 11 14 VOLTAGES #39:7.5V D404 R522 T402 D505...
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Page 16: No Sound
NO SOUND GO TO CHECK FOR SIGNAL AT IC501 #6 GO TO IF 4 ISOK & NO OUTPUT THEN LC501 CHANGE EC501 LA7674 CHECK CONNECTOR P601 SP01 SOUND VOLUME SPEAKER MAX: ~7V MIN: ~1V VOL-UP IC701 DOWN LOW PASS LC864616A CONTROL FILTER I601... - Page 17 CH DON'T STOP GO TO GOOD CHECK INPUT SIGNAL CONDITIONS LOSS OF SIGNAL OR WEAK SIGNAL IF OUTPUT IC501 8, 9 U001 LA7674 TUNER CHECK ADJUST AFT WINDOW RF AGC VTG. R113 1.6V ~ 3.4V IC701 LC864616A ADJUST PIF & AFT REFER TO GENERAL ADJUSTMENTS H: NO SIGNAL...
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Page 18: No Vertical Deflection
NO COLOR CHECK MAX. TINT APC FILTER COLOR X501 MAX. IC501 LA7674 CHECK CRYSTAL CHECK COMPOSITE C517 VIDEO Q901 Q902 Q504 Emitter Q903 LUMINANCE (-Y) 180V LINE CHECK CONNECTOR PA901 NO VERTICAL DEFLECTION CHECK 9V CHECK VERT.OUT IC501 IC301 LA7674 LA7837 CHECK 25V R301... -
Page 19: Remote Control Does Not Operate
ON SCREEN DISPLAY DOES NOT OPERATE CHECK FOR,60Hz / VS R, G, B, BL IC701 CHANGE / HS IF OSD DOES NOT OPERATE, CHANGE IC701 CHECK FOR, 15, 734Hz OSC CHECK REMOTE CONTROL DOES NOT OPERATE IL01 REMOCON SENSOR GND 5V OUT CHECK WAVE- FORM... - Page 20 DESCRIPTION OF SEMICONDUCTORS LA7674 (VIF/SIF/VIDEO/CHROMA/DEFLECTION) 1. Case Outline : SDIP 52P 2. Pin Connections/Block Diagram IC501 LA7674 IF/VIDEO/CHROMA/DEF LOCK VIDEO EX A RF AGC VIDEO RF AGC AV S.W IN V TINT EX. VIN CONT TINT KILL- VIDEO COLOR BDET BLACK EXPAND SHARP...
- Page 21 PIN ASSIGN OF IC LC864616A(I701) 1 P10 P07 42 POWER(O) VIDEO MUTE(O) KEY OUT 2 P11 DATA(O) KEY OUT CLOCK(O) 3 P12 KEY OUT ENABLE(O) 4 P13 KEY IN 3-LAN TV/VID 5 P14 SOUND MUTE(O) KEY IN TV/VIDEO(O) MN/ST 6 P15 EEPROM KEY IN MPX1(O)
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Page 29: Parts List
12000 PSBCSH0002 COVER BACK AS DTQ-14N2FC M211 4852144400 COVER BACK FR HIPS DTQ-14N2FC M541 4855417857 SPEC PLATE 14N2FC 150ART P/E DTQ-14N2FC DWO M542 48558T0111 LABEL SERIAL PAPER 68 28.5 MODEL S/N ALL/M 13000 PSPKCP0002 PACKING ASSY DTQ-14N2FC M601 4858210601 BAG P.E P.E FILM T0 05 900 900... - Page 30 PARTS LIST (DTQ-14N2FC) Item Code Item Name Description C525 CZSL1H300J C CERA 50V SL 30PF J (AXIAL) C526 CCZB1H910K C CERA 50V B 91PF K (AXIAL) C527 CCZF1E103Z C CERA 25F 0.01MF Z (AXIAL) C606 CCZB1H471K C CERA 50V B 470PF K (AXIAL)
- Page 31 PARTS LIST (DTQ-14N2FC) Item Code Item Name Description D804 DBYV95C-- DIODE BYV95C (TAPPING) D805 DBYV95C-- DIODE BYV95C (TAPPING) D806 NBYD33GT-- DIODE BYD33G-T D807 DUZ6R2BM-- DIODE ZENER UZ-6.2BM 6.2V D808 DUZ6R2BM-- DIODE ZENER UZ-6.2BM 6.2V J001 85801065GY WIRE COPPER AWG22 1/0065 TIN COATING...
- Page 32 PARTS LIST (DTQ-14N2FC) Item Code Item Name Description J054 85801065GY WIRE COPPER AWG22 1/0065 TIN COATING J056 85801065GY WIRE COPPER AWG22 1/0065 TIN COATING J057 85801065GY WIRE COPPER AWG22 1/0065 TIN COATING J058 85801065GY WIRE COPPER AWG22 1/0065 TIN COATING...
- Page 33 PARTS LIST (DTQ-14N2FC) Item Code Item Name Description R404 RD-AZ331J- R CARBON FILM 1/6 330 OHMJ R407 RD-2Z472J- R CARBON FILM 1/2 4.7K OHMJ R414 RD-AZ123J- R CARBON FILM 1/6 12K OHMJ R415 RD-AZ103J- R CARBON FILM 1/6 10K OHMJ...
- Page 34 PARTS LIST (DTQ-14N2FC) Item Code Item Name Description R709 RD-AZ101J- R CARBON FILM 1/6 100 OHMJ R710 RD-AZ392J- R CARBON FILM 1/6 3.9K OHMJ R711 RD-AZ332J- R CARBON FILM 1/6 3.3K OHMJ R713 RD-AZ102J- R CARBON FILM 1/6 1K OHMJ...
- Page 35 PARTS LIST (DTQ-14N2FC) Item Code Item Name Description R902 RD-AZ331J- R CARBON FILM 1/6 330 OHMJ R903 RD-AZ181J- R CARBON FILM 1/6 180 OHMJ R904 RD-AZ101J- R CARBON FILM 1/6 100 OHMJ R905 RD-AZ152J- R CARBON FILM 1/6 1.5K OHMJ...
- Page 36 PARTS LIST (DTQ-14N2FC) Item Code Item Name Description C605 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3 11) TP C607 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3 11) TP C608 CMXM2A104J C MYLAR 100V 0.1MF J TP C609 CEXF1E470V C ELECTRO...
- Page 37 PARTS LIST (DTQ-14N2FC) Item Code Item Name Description SW03 5S50101090 SW TACT SKHV17910A SW04 5S50101090 SW TACT SKHV17910A SW05 5S50101090 SW TACT SKHV17910A SW06 5S50101090 SW TACT SKHV17910A X501 5XEX3R579C CRYSTAL QUARTZ HC-49U 3.579545M 20PPM TA ASB1 4850A18340 ANT SHIELD BOX...
- Page 38 PARTS LIST (DTQ-14N2FC) Item Code Item Name Description R310 RS01Y331J- R M-OXIDE FILM 1W 330 OHM J R405 RS02Y822JS R M-OXIDE FILM 2W 8.2K OHM J SMALL R406 RS02Y822JS R M-OXIDE FILM 2W 8.2K OHM J SMALL R409 RS01Y562J- R M-OXIDE FILM 1W 5.6K OHM J...
- Page 39 OPTION LIST CN-115I MODEL LINE-UP AREA NORTH AMERICA MIDDLE AMERICA MIDDLE AMERICA DTQ-14N2/20N2FC DTQ-14N2/20N2FS DTQ-14N2/20N2FSP MODEL DTQ-14J2/20J2FC DTQ-14J2/20J2FS DTQ-14J2/20J2FSP DTQ-14N3/20N3FC DTQ-14N3/20N3FS DTQ-14N3/20N3FSP AC INPUT AC 120V ONLY AC 85-150V AC 220V ONLY COUNTRY U.S.A, CANADA MEXICO, PANAMA, etc. CHILE, PERU AV OPTION W/O AV WITH AV...
- Page 40 T801 TSM-2519A1 TSM-2820A1 TSM-2820A2 Q804 KSC5021 KSE13009 KSE13009 Q804A 4857013300 C821 223(M) R806 390K(1/2) 390K(1/2) 390K(1W) A34JLL40X A34JLL40X A34JLL41X A48KZL90X(LW) A48JLL40X A48JLL41X A48KZL70X(LW) A48KZL90X(LW):MEXICO A48KZL70X(LW):MEXICO D.COIL DC-1400, DC-2000 DC-1400, DC-2000 DC-1450, DC-2050 NEXT TIME (C. K. D 96. 10 LOT) FC WILL BE RUNNING CHANGED TO FS ( except. POWER CORD) - 41 -...
- Page 41 CN-115I AV OPTION R701 : ADD 10K C107 : ADD 50V 4.7u R706 : ADD 10K C506 : ADD 50V 10u RA01 : ADD 1K C510 : ADD 50V 22u RA02 : ADD 75 CA01 : ADD 50V 10u RA04 : ADD 1W 4.7(F) CA02 : ADD 50V 10u RA05 : ADD 56(1/4) CA03 : ADD 25V 220u...
- Page 42 ENGINEER NOTE...
- Page 43 DAEWOO ELECTRONICS CO., LTD. 686, AHYEON-DONG, MAPO-GU, SEOUL, KOREA. C.P.O. BOX 8003 SEOUL KOREA TELEX : DWELEC K28177-8 F A X : (02) 364-5588,5305 T E L : (02) 360-7360 4, 7315 7 S/M NO :CN115N-010 PRINTED DATE:NOV. 1996...