Daewoo DTQ-14V1FCN/20V1FCN Service Manual
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Daewoo DTQ-14V1FCN/20V1FCN Service Manual

Color television chassis : cn-001n
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Service Manual
Color Television
CHASSIS : CN-001N
Model :
DTQ-14V1FCN/20V1FCN
DTQ-14V5FCN/20V4FCN
DTQ-14V1FSN/20V1FSN
DTQ-14V5FSN/20V4FSN
DTQ-14V3FSN/20V3FSN
DTQ-14U1FSN/20U1FSN
DTQ-14V1FSPN/20V1FSPN
DTQ-14V5FSPN/20V4FSPN
DTQ-14U1FSPN/20U1FSPN
DTQ-14V1FCN
DTQ-14V5FCN
DAEWOO ELECTRONICS CO., LTD
http : //svc.dwe.co.kr
S/M No.:CN001N-010
U.S.A
Canada
Middle America
(AC 110V)
Mexico,Chile,
Peru (AC 220V)
DTQ-20V4FCN
DTQ-14V3FCN
DTQ-14U1FSN
Dec. 2000

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Summary of Contents for Daewoo DTQ-14V1FCN/20V1FCN

  • Page 1 Color Television CHASSIS : CN-001N Model : DTQ-14V1FCN/20V1FCN U.S.A DTQ-14V5FCN/20V4FCN Canada DTQ-14V1FSN/20V1FSN DTQ-14V5FSN/20V4FSN Middle America DTQ-14V3FSN/20V3FSN (AC 110V) DTQ-14U1FSN/20U1FSN DTQ-14V1FSPN/20V1FSPN Mexico,Chile, DTQ-14V5FSPN/20V4FSPN Peru (AC 220V) DTQ-14U1FSPN/20U1FSPN DTQ-20V4FCN DTQ-14V1FCN DTQ-14V3FCN DTQ-14V5FCN DTQ-14U1FSN DAEWOO ELECTRONICS CO., LTD http : //svc.dwe.co.kr Dec. 2000...

  • Page 2: Table Of Contents

    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 ..........................

  • Page 3: Product Safty Servicing Guidelines For Audio - Video Producs

    PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO - VIDEO PRODUCTS CAUTION SUBJECT : X-RADIATION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY. 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.

  • Page 4: Product Safty Servicing Guidelines For Color Television Receivers

    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...
  • Page 5 SUBJECT : IMPLOSION 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 1. All direct viewed picture tubes are equipped with an integral implo- feet(or the equivalent thickness in spacers) to provide adequate sion protection system, but care should be taken to avoid damage are flow across the bottom, bolts or screws used for fasteners...

  • Page 6: Specifications

    SPECIFICATIONS DTQ-14/20V1FCN MODEL DTQ-14V5/20V4FCN DTQ-14/20V1FSPN DTQ-14/20V1FSN DTQ-14/20U1FSN DTQ-14/20U1FSPN REMARKS DTQ-14V5/20V4FSPN ITEMS DTQ-14V5/20V4FSN DTQ-14/20V3FSN TV STANDARD NTSC-M POWER INPUT AC 120V 60 Hz AC 220V 50/60 Hz 14 = 55W POWER CONSUMPTION 20 = 68W TUNING SYSTEM Frequency Synthesizer ( FS ) Tuning System VHF : 2 ~ 13 (12) TUNING RANGES UHF : 14 ~ 69 (56)

  • Page 7: Block Diagram

    BLOCK DIAGRAM...

  • Page 8: Alignment Instructions

    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. Turn the set on.

  • Page 9: Assembly Adjustments

    ALIGNMENT INSTRUCTIONS Table-B DATA MODE ADJUSTMENT ITEMS REMARKS INITIAL RANGE Screen Adjustment Auto RF AGC Video Level (VIDEOL) 0 ~ 7 Must be set to 7 RF AGC Delay (RFAGCD) 0 ~ 63 Align RF AGC threshold FM Level (FM.LEV) 0 ~ 31 Must be set to 20 AGC Point...
  • Page 10 ALIGNMENT INSTRUCTIONS 2) FOCUS ADJUSTMENT Turn in a local station and adjust the Focus Control knob (located on FBT) for best picture details at high light condition. 3) RF AGC DELAY ADJUSTMENT (S5) Receive a good local channel. Enter the service mode and select service adjustment S5. You can see the OSD as shown in below.
  • Page 11 ALIGNMENT INSTRUCTIONS 4-3. Vertical Size Adjustment Select “ V.SIZE” item, adjust “ V.SIZE” data value to proper vertical size as follows. 5) WHITE BALANCE ADJUSTMENT(S8) Receive a good local channel. Enter the service mode and select service adjustment S8. You can see the OSD as shown in below. ¡...
  • Page 12 ALIGNMENT INSTRUCTIONS Select Subbrightness item, adjust Subbrightness data value to obtain normal brightness level. Press the DISPLAY button to memorize the data. CONTRAST Fixed value = 27 TINT Fixed value = 32 COLOR Fixed value = 20 7) FACTORY OUTGOING MODE (S12 : FACT) If you select the S12, then the set becomes factory outgoing status.

  • Page 13: Parental Control Password Settings

    ALIGNMENT INSTRUCTIONS 3. PARENTAL CONTROL PASSWORD SETTINGS If user forget Parental Control Password as follows. 1) CHANGE THE PASSWORD. • Turn the set on. • Direct the remote control to the reception window of your TV/VCR • Using the MENU buttons, select the Special menu. •...

  • Page 14: Voltage Chart

    VOLTAGE CHART MODE MODE I101 2.37 2.73 1.94 2.63 2.36 2.22 0.49 2.44 2.88 4.25 0.51 2.88 4.25 0.51 3.56 4.92 0.57 3.04 0.65 2.25 1.98 0.32 2.29 0.28 2.39 4.89 3.11 4.85 4.84 MODE 3.94 I301 1.53 13.35 1.53 26.34 3.63 2.22...
  • Page 15 VOLTAGE CHART MODE MODE I701 4.89 I703 4.81 5.04 4.99 5.04 4.99 4.89 4.86 4.86 4.83 2.68 2.66 4.97 4.92 5.04 4.99 5.04 4.99 MODE 2.22 0.49 I801 6.72 4.12 4.89 163.8 173.53 4.95 4.89 14.4 11.02 3.37 4.53 3.21 2.69 2.47 2.35...
  • Page 16 VOLTAGE CHART MODE MODE 5.02 5.02 Q201 3.32 3.28 Q703 2.49 2.48 38.6 42.28 4.93 Q401 Q704 4.95 4.92 4.32 4.29 5.02 Q402 Q707 0.21 0.07 0.59 2.89 Q403 Q760 0.66 0.68 10.1 Q404 Q804 133.1 119.38 132.6 118.96 9.71 12.31 Q602 1.69...

  • Page 17: Waveforms

    WAVEFORMS (1) I101 PIN 19 (2) I101 PIN 20 (3) I101 PIN 21 (4) I101 PIN 23 (5) I101 PIN 40 (5) I101 PIN 44 (7) I101 PIN 46 (8) I301 PIN7...
  • Page 18 WAVEFORMS (9) I701 PIN 7 (10) I701 PIN 17 (12) I801 PIN 2 1) I701 PIN 18 (13) T402 PIN 25.5V (14) T402 PIN 10.5V (15) T402 PIN HEATER (16) T402 PIN 200V...
  • Page 19 WAVEFORMS (17) T401 PIN H.V . (18) T801 PIN 133V (19) Q403 COLLECT OR (20) CR T SOCKET PIN B (21) CR T SOCKET PIN R (22) CR T SOCKET PIN G...

  • Page 20: Schematic Diagram

    SCHEMATIC DIAGRAM...

  • Page 21: Exploded View

    EXPLODED VIEW 1. DTQ-14V1FSN...
  • Page 22 EXPLODED VIEW 2. DTQ-14V3FSN...
  • Page 23 EXPLODED VIEW 3. DTQ-14V5FCN / FSN...
  • Page 24 EXPLODED VIEW 4. DTQ-14U1FSN...
  • Page 25 EXPLODED VIEW 5. DTQ-20V1FSN...
  • Page 26 EXPLODED VIEW 6. DTQ-20V3FSN...
  • Page 27 EXPLODED VIEW 7. DTQ-20V4FSN...
  • Page 28 EXPLODED VIEW 8. DTQ-20U1FSN...

  • Page 29: Electrical Parts List

    ELECTRICAL PARTS LIST CAUTION “ I“ is a safety part, so it must be used the same part. “ ” is a recommendable part for essential stock. PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK ZZ100 48B4343A01 TRANSMITTER REMOCON R-43A01 (AA)
  • Page 30 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK RS801 DSVC471D14 VARISTOR SVC471D14A JC703 HRFT000-CA R CHIP 1/10 0 OHM 2012 SCT1 4859303930 SOCKET CRT ISMG03S INCHANG JC704 HRFT000-CA R CHIP 1/10 0 OHM 2012 SF101 5PTSF5241P FILTER SAW...
  • Page 31 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK RC655 HRFT162JCA R CHIP 1/10 1.6K OHM J 2012 C410 CEXF2E100V C ELECTRO 250V RSS 10MF (10X20) TP RC701 HRFT220JCA R CHIP 1/10 22 OHM J 2012 C414 CEXF1V471V C ELECTRO...
  • Page 32 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK E104 4856310600 EYE LET BSR T0.2 (R2.3) C508 CMXM2A224J C MYLAR 100V 0.22MF J E105 4856310600 EYE LET BSR T0.2 (R2.3) C509 CEXF1H109V C ELECTRO 50V RSS 1MF (5X11) TP E106 4856310600...
  • Page 33 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK Q805 TKTC3205Y- KTC3205Y (TP) D701 D1N4148--- DIODE 1N4148 (TAPPING) Q851 TKSC945CY- KSC 945C-Y (TAPPING) D704 DUZ3R9B--- DIODE ZENER UZ-3.9B R301 RN01B471JS R METAL FILM 1W 470 OHM J SMALL D790 D1N4148--- DIODE...
  • Page 34 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK J953 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING R592 RD-4Z331J- R CARBON FILM 1/4 330 OHM J J954 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING R593 RD-4Z331J- R CARBON FILM...
  • Page 35 DAEWOO ELECTRONICS CO., LTD 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX : DWELEC K28177-8 CABLE : “ DAEWOOELEC” E-mail : djkoo@web.dwe.co.kr FAX : 02) 360-7877 TEL: 02) 360-7806...

  • Page 36: Ic Description

    IC DESCRIPTION Appendix U-COM(I701) X’ TAL:32.768 KHz...
  • Page 37 IC DESCRIPTION Appendix 1. Abstract. This specification is 1-Tuner Mono Model for North/South America, CCD 1-Chip MICOM LC863228A. It is developing software specification for tuning only NTSC 2. H/W Outline. 1) ROM : 28,672 x 8bits.tsc : 15,872 x 8 bits for CGROM. 2) RAM : 512 x 8bits.
  • Page 38 IC DESCRIPTION Appendix 3) On Screen Displays function is interior designed. 4) Package. : 36 PIN SDIP. 5) Tuner (Pre-scaler.) C Bus. /PLL IC : TAU 6014-S(SIEMENS). 6) Remocon. : The IC of Transmission (MITSUBISHI M50560) 7) E PROM. : 24C04(I C Bus) Apply one byte Read/Write mode.
  • Page 39 IC DESCRIPTION Appendix - Auto Power On Function.(Power Restore function in the Special Menu) - Heat Run Function. --- OSD White Back-Ground - Sleep Timer. - Wake Up Time Function. - Off Time Function. - Remote Reception & Control. - Auto Tint.----------------------- (Option) - Power Restore.
  • Page 40 IC DESCRIPTION Appendix 6. Pin Description Terminal Name Explanation Remarks P10/SDA0 ROM Data Main 6 bit input/output port IC Data Input/output can be Specified for each bit ROM CLK Other function. P11/SCLK0 Main IC CLK IIC0 data I/O P12/SDA1 IIC0 clock output. Tuner Data IIC1 data I/O IIC1 clock output.
  • Page 41 IC DESCRIPTION Appendix Terminal Name Explanation Blue output terminal of RGB image Fast blanking control signal Switch TV image Signal and caption / OSD image signal Output terminal Audio Mute Use only read data of LA76814/10 Use when does power off/on Power On Power off: Output Low(DC 0V) Power on: Output High(DC 5V)
  • Page 42 IC DESCRIPTION Appendix I101 DCT814(LA76814) : IC VIDEO PROCESSOR AUDIO OUT SIF INPUT FM OUTPUT SIF APC FILTER PIF AGC SIF OUTPUT RF AGC OUT EXT. AUDIO INPUT PIF INPUT1 VCO FILTER PIF INPUT2 VCO COIL1 IF GND VCO COIL2 IF VCC APC FILTER FM FILTER...

  • Page 43: No Power

    TROUBLESHOOTING GUIDE Appendix 1. NO POWER...

  • Page 44: No Picture

    TROUBLESHOOTING GUIDE Appendix 2. NO PICTURE NG : GO to the figure c Check the waveform of I101 #46 OK : Go the figure d 1701 MICOM...

  • Page 45: No Sound

    TROUBLESHOOTING GUIDE Appendix 3. NO SOUND NG : Go to the figure e Check audio output signal of I101 #1 OK : Go to the figure f g 1701 MICOM...

  • Page 46: Ch Don' T Stop

    TROUBLESHOOTING GUIDE Appendix 4. CH DON’ T STOP NG : Loss of signal or weak signal Check the input signal conditions OK : Go to the figure h...

  • Page 47: No Color

    TROUBLESHOOTING GUIDE Appendix 5. NO COLOR 6. NO VERTICAL DEFLECTION...

  • Page 48: No On-Screen Disply

    TROUBLESHOOTING GUIDE Appendix 7. NO ON-SCREEN DISPLAY 8. REMOTE CONTROL DOES NOT OPERATE...

This manual is also suitable for:

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