Daewoo DTQ-14J4FC Service Manual
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Daewoo DTQ-14J4FC Service Manual

Daewoo DTQ-14J4FC Service Manual

Color television
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Service Manual

Color Television
CHASSIS : CN-001C
Model : DTQ-14J4FC ( B13A02D )
DTQ-14J4FCA ( B13103D )
DTQ-14J4FCC ( B113A01L )
DTQ-20J4FC ( B19A02D )
 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
http : //svc.dwe.co.kr
S/M No. : CN001C-010
Nov. 2000

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Summary of Contents for Daewoo DTQ-14J4FC

  • Page 1: Service Manual

    S/M No. : CN001C-010 Service Manual Color Television CHASSIS : CN-001C Model : DTQ-14J4FC ( B13A02D ) DTQ-14J4FCA ( B13103D ) DTQ-14J4FCC ( B113A01L ) DTQ-20J4FC ( B19A02D )  Caution : In this Manual, some parts can be changed for improving, their performance without notice in the parts list.

  • 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: Safety Precautions

    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 MODEL DTQ-14J4FC, DTQ-14J4FCA, DTQ-14J4FCC, DTQ-20J4FC REMARKS ITEMS TV STANDARD NTSC-M POWER INPUT AC 120V 60 Hz 14 = 55W POWER CONSUMPTION 20 = 65W TUNING SYSTEM Frequency Synthesizer ( FS ) Tuning System VHF : 2 ~ 13 (12)

  • 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. •...

  • 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. •...
  • 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. •...
  • 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 = 10 TINT • Fixed value = 27 COLOR • Fixed value = 15 7) FACTORY OUTGOING MODE (S12 : FACT) •...

  • Page 13: Ic Description

    IC DESCRIPTION U-COM(I701) TV ONLY (H) POWER ON(H) CABLE (H) ST / MONO AUDIO MUTE(H) P13/PWM1 AKB WHITE BLUE BACK P14/PWM2 SOUND RESET H.OUT P15/PWM3 ON(L)/OFF(H) AUTO TINT POWER ON P17/PWM ST-BY(H) P73/INT3/TOIN REMOCON IN P72/INT2/TOIN P71/INT1 P70/INT0 KEY IN P84/AN4 P63/SCLK1 T-CLOCK...
  • Page 14 IC DESCRIPTION 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 and 3 system TV F/S. * 3 System : NTSC-M, PAL-M, PAL-N. 2. H/W Outline. 1) ROM : 28,672 x 8bits.tsc : 15,872 x 8 bits for CGROM.
  • Page 15 IC DESCRIPTION 3) On Screen Displays function is interior designed. 4) Package. : 42 PIN SDIP. 5) Tuner (Pre-scaler.) C Bus. /PLL IC : TAU 6014-S(SIEMENS). 6) Remocon. : The IC of Transmission (MITSUBISHI M50560) C Bus) ◊ Apply one byte Read/Write mode. 7) E PROM.
  • Page 16 IC DESCRIPTION - 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. - Power Restore.
  • Page 17 IC DESCRIPTION 6. Pin Description...
  • Page 18 IC DESCRIPTION...
  • Page 19 IC DESCRIPTION...
  • Page 20 IC DESCRIPTION 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 VIDEO OUTPUT...
  • Page 21 IC DESCRIPTION I801 POWER CONTROL MODULE DPM 001 TI PIN NO DESCRIPTION PIN NO DESCRIPTION GATE DRIVE1 +12V INPUT POWER CONTROL SOURCE GND1 GND2 GATE +133V INPUT GATE DRIVE2...

  • Page 22: Trouble Shooting Charts

    TROUBLESHOOTING GUIDE 1. NO POWER FROM FBT 10V Check R416 Check F801(125V 4A) D801 D801(PBS208GU) RLY01 F801 R801 PCW1 L801 Check R801(7W 2.2) TO I101 #34 T801 C819 Check D807 Voltage 133V C804 R814 Check 133V C814 waveform C820 R809 L802 TUNER D808...

  • Page 23: No Picture

    TROUBLESHOOTING GUIDE 2. NO PICTURE NG : GO to the figure c Check the waveform of I101 #46 OK : Go the figure d Check the voltages U102 SF101 IF OUT TUNER SAW FILTER T-DATA T-CLOCK Check clock/data signal Check #29 #30 IF AGC voltage I701...

  • Page 24: No Sound

    TROUBLESHOOTING GUIDE 3. NO SOUND NG : Go to the figure e Check audio output signal of I101 #1 OK : Go to the figure f U102 SF101 IF OUT TUNER SAW FILTER T-DATA T-CLOCK Check #29 #30 IF AGC voltage Check I701 SIF output signal...

  • Page 25: Ch Don' T Stop

    TROUBLESHOOTING GUIDE 4. CH DON’ T STOP NG : Loss of signal or weak signal Check the input signal conditions OK : Go to the figure g Check 5V/33V LINE U102 SF101 IF OUT TUNER SAW FILTER T-DATA T-CLOCK AGC IN C103 #29 #30 RF AGC OUTPUT...

  • Page 26: No Color

    TROUBLESHOOTING GUIDE 5. NO COLOR Check Check C.V.S waveform the voltage composite video in Video/Chroma/Deflection Vcc Check the crystal Check the voltage X502 I101 RGB Vcc (9V) R OUT G OUT B OUT Check R/G/B signal 6. NO VERTICAL DEFLECTION Check the voltage Check...

  • Page 27: No On-Screen Disply

    ROUBLESHOOTING GUIDE 7. NO ON-SCREEN DISPLAY Check the signal (60Hz) V.SYNC IN Check I701 clock/data signal H.SYNC IN MICOM I101 OSD R Check OSD G the signal (15,734Hz) OSD B BLANK #11 #12 XC701 32.768KHz Check ST-BY OSD R/G/B/BLANK signal Check the crystal If OSD does not operate,...

  • Page 28: Electrical Parts List

    ZZ100 48B4025Z11 TRANSMITTER REMOCON R-25Z11 C880 CH2AEE222M C CERA AC 2.5KV 2200PF M MX DE1610 ZZ110 PTACPWH407 ACCESSORY AS DTQ-14J4FC C881 CH2AEE102M C CERA AC 2.5KV 1000PF M MX DE1310 4850A02510 ANT ROD S3BW216B (L=600 MM) D801 DD2SB80--- DIODE BRIDGE...
  • Page 29 ELECTRICAL PARTS LIST ELECTRICAL PARTS LIST PART CODE PRAT NAME DESCRIPTION PART CODE PRAT NAME DESCRIPTION CC152 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 RC362 HRFT113JCA R CHIP 1/10 11K OHM J 2012 CC153 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 RC426 HRFT302JCA...
  • Page 30 ELECTRICAL PARTS LIST PART CODE PRAT NAME DESCRIPTION PART CODE PRAT NAME DESCRIPTION RC756 HRFT472JCA R CHIP 1/10 4.7K OHM J 2012 2TM18006BE TAPE MASKING 6.2X500 RC759 HRFT472JCA R CHIP 1/10 4.7K OHM J 2012 P601 485923162S CONN WAFER YW025-03 (STICK) RC770 HRFT472JCA R CHIP...
  • Page 31 ELECTRICAL PARTS LIST PART CODE PRAT NAME DESCRIPTION PART CODE PRAT NAME DESCRIPTION C701 CEXF1H470V C ELECTRO 50V RSS 47MF (6.3X11) TP SW703 5S50101090 SW TACT THVH472GCA C702 CEXF1C221V C ELECTRO 16V RSS 220MF (8X11.5) TP SW704 5S50101090 SW TACT THVH472GCA C703 CEXF1H109V...
  • Page 32 ELECTRICAL PARTS LIST PART CODE PRAT NAME DESCRIPTION PART CODE PRAT NAME DESCRIPTION J020 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING L533 5CPZ150K02 COIL PEAKING 15UH K (AXIAL 3.5MM) J021 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING L701 5CPZ220K02 COIL PEAKING 22UH K (AXIAL 3.5MM) J022 85801065GY...

  • Page 33: Different Parts List

    DIFFERENT PARTS LIST 1. 14FCAFC PART CODE PRAT NAME DESCRIPTION DTQ-14J4FCA DTQ-14J4FC C515 CEXD1H109F C ELECTRO 50V RND 1MF (5X11) TP C524 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP C880 CH1BFE222M C CERA AC U/C/V AC400V 2200PF C880 CH2AEE222M C CERA AC 2.5KV 2200PF M MX DE1610...

  • Page 34: Different Parts List

    DIFFERENT PARTS LIST 2. 14FCA20FC PART CODE PRAT NAME DESCRIPTION DTQ-14J4FCA DTQ-20J4FC 4850A02510 ANT ROD S3BW216B (L=600 MM) 4850A00250 TRANS ANT MATCHING IMT-06 C404 CMYH3C662H C MYLAR 1.6KV BUP 6600PF H C404 CMYH3C722H C MYLAR 1.6KV BUP 7200PF H C406 CMYE2D274J C MYLAR 200V PU 0.27MF J...
  • Page 35 DIFFERENT PARTS LIST PART CODE PRAT NAME DESCRIPTION DTQ-14J4FCA DTQ-20J4FC QV01 TKSC945CY- KSC 945C-Y (TAPPING) R301 RN01B471JS R METAL FILM 1W 470 OHM J SMALL R301 RN01B561JS R METAL FILM 1W 560 OHM J SMALL R402 RN01B102JS R METAL FILM 1W 1K OHM J SMALL R412 RN01B369JS...
  • Page 36 DIFFERENT PARTS LIST 3. 14FCAFCC PART CODE PRAT NAME DESCRIPTION DTQ-14J4FCA DTQ-14J4FCC C515 CEXD1H109F C ELECTRO 50V RND 1MF (5X11) TP C524 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP CA01 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP CC766 HRFT000-CA R CHIP 1/10 0 OHM 2012...
  • Page 37 EXPLODED VIEW 1. DTQ-14J4FC...

  • Page 38: Exploded View

    EXPLODED VIEW 2. DTQ-14J4FCA...
  • Page 39 EXPLODED VIEW 3. DTQ-14J4FCC...
  • Page 40 EXPLODED VIEW 4. DTQ-20J4FC...
  • Page 42 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 TEL : 82-2-360-7806 FAX : 82-2-360-7877...

This manual is also suitable for:

Dtq-20j4fcDtq-14j4fcaDtq-14j4fccB13a02dB13103dB113a01l ... Show all

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