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Daewoo DTQ-14V3FS/20V3FS manual

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Table of contents for the manual

  • Page 1

    Service Manual Color Television CHASSIS : CN-001A Model : DTQ-14V1FC/20V1FC DTQ-14V5FC/20V4FC DTQ-14V1FS/20V1FS DTQ-14V5FS/20V4FS DTQ-14V3FS/20V3FS DTQ-14U1FS/20U1FS DTQ-14V1FSP/20V1FSP DTQ-14V5FSP/20V4FSP DTQ-14U1FSP/20U1FSP S/M No. : CN001A-020 Aug. 1999 U.S.A Canada Middle America (AC 110V) Mexico,Chile, Peru (AC 220V) DAEWOO ELECTRONICS CO., LT[...]

  • Page 2

    1 TABLE OF CONTENTS SAFETY PRECAUTION S .................................................................................................................... 2 PRODUCT SAFTY SERVICING GUIDELINES FOR AUDIO - VIDEO PRODUC S ......................................... 2 PRODUCT SAFTY SERVICING GUIDELINES FOR COLOR TELEVISION RECEIVER S ..................[...]

  • Page 3

    2 PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO - VIDEO PRODUCTS CAUTION : 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 THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANT RESULT- ING PROPERTY DAMAGE OR USER INJURY. [...]

  • Page 4

    3 PRODUCT SAFETY SERVICING GUIDELINES FOR COLOR TELEVISION RECEIVERS CAUTION : Do not attempt to modify this product in any way. Unau- thorized 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 wit[...]

  • Page 5

    4 SUBJECT : IMPLOSION 1. All direct viewed picture tubes are equipped with an integral implo- sion 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 receive[...]

  • Page 6

    5 SPECIFICATIONS MODEL ITEMS DTQ-14/20V1FC DTQ-14V5/20V4FC DTQ-14/20V1FS DTQ-14V5/20V4FS DTQ-14/20V3FS DTQ-14/20U1FS DTQ-14/20U1FSP DTQ-14/20V1FSP DTQ-14V5/20V4FSP REMARKS TV STANDARD NTSC-M POWER INPUT AC 120V 60 Hz AC 220V 50/60 Hz POWER CONSUMPTION 14 = 55W 20 = 65W TUNING SYSTEM Frequency Synthesizer ( FS ) Tuning System TUNING RANGES VHF : 2 ~[...]

  • Page 7

    6 BLOCK DIAGRAM U1 02 TUNE R A NTE NNA RF INP UT IF I70 1 M IC RO C O MP U T E R P O W E R C H +/ - V O L +/ - M E NU OS D B L A NK OS D B L UE OS D GREE N OS D R ED S T-B Y 5 V S DA S CK 27 2 8 25 2 4 23 2 2 8 5 6 S DA S CK SD A SC K 12 11 I7 03 EEPR O M 1 4 15 1 6 17 RF AG C A FT 15 1 4 4 1 0 CV BS Q70 3 1 9 4 0 2 0 V.SY NC 21 H.S YNC S AW FI LT [...]

  • Page 8

    7 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. • Direct the remote control to the reception window of TV. • Push bu[...]

  • Page 9

    8 ALIGNMENT INSTRUCTIONS Table-B * indicates the items with different settings each of sets 2. ASSEMBLY ADJUSTMENTS 1) SCREEN ADJUSTMENT (S2) • Enter the service mode and select service adjustment S2. • You cna see the one horizontal line on the screen. • Adjust the Screen Control Volume (located on FBT) so that the horizontal line onscreen m[...]

  • Page 10

    9 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. • Select RFAGCD item, press[...]

  • Page 11

    10 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. • Using volume up or [...]

  • Page 12

    11 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) • If you select the S12, then the set becomes factor[...]

  • Page 13

    12 IC DESCRIPTION U-COM(I701) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 P10 P11 P12 P13/PWM1 P14/PWM2 P15/PWM3 P16 P17/PWM VSS XT1 XT2 VDD P84/AN4 P85/AN5 P86/AN6 P87/AN7 RES FILT CVIN VS HS R G B BL I P60/SDA0 P61/SCLK0 P62/SDA1 P63/SCLK1 P70/INT0 P71/INT1 P72/INT2/TOIN P73[...]

  • Page 14

    13 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. 2) RAM : 512 x 8bits. : 336 x 9bits[...]

  • Page 15

    14 IC DESCRIPTION 3) On Screen Displays function is interior designed. 4) Package. : 42 PIN SDI P . 5) Tuner (Pre-scaler.) : I 2 C Bus. /PLL IC : TAU 6014-S(SIEMENS). 6) Remocon. : The IC of Transmission (MITSUBISHI M50560) 7) E 2 PROM. : 24C08(I 2 C Bus) ◊ Apply one byte Read/Write mode. 8) 6-Local Key. : A/D Input Control.(Power, Ch Up/Down, Vo[...]

  • Page 16

    15 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. - Input(TV/Line) Controlled function. ----------------------- (Option) - Reception.(Air/Ca[...]

  • Page 17

    16 IC DESCRIPTION 6. Pin Description[...]

  • Page 18

    17 IC DESCRIPTION[...]

  • Page 19

    18 IC DESCRIPTION[...]

  • Page 20

    19 IC DESCRIPTION I101 DCT814(LA76814) : IC VIDEO PROCESSOR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 ABL IN OSD RED INPUT OSD GREEN INPUT OSD BLUE INPUT 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 EXT. AUDIO INPUT SIF OUTPUT SIF APC FILTER SIF INPUT 22 23 24 25 26 27 33 32 31 30 29 28 BUS CLOCK FAST BLANKING INPUT RG[...]

  • Page 21

    20 IC DESCRIPTION I801 POWER CONTROL MODULE PIN NO DESCRIPTION PIN NO DESCRIPTION 1 GATE DRIVE1 10 +12V INPUT 2 OCP 11 POWER CONTROL 3 SOURCE 12 NC 4 GND1 13 GND2 5 GATE 14 +133V INPUT 6 GATE DRIVE2 DPM 001 TI KSE 1 2 3 4 5 6 10 11 12 13 14[...]

  • Page 22

    21 TROUBLESHOOTING GUIDE 1. NO POWER 12V #10 #3 #5 #1 I801 D801 PCW1 F801 L801 R801 R416 RLY01 FROM FBT 10V C804 T801 B+ 133V 45V 12V D807 C814 D808 D813 C815 C812 R814 C820 C819 TO I101 #34 OCP TUNER 33V R820 DR.TRNS B+ 45V SOUND B+ 12V R817 R818 D812 5.6Vz Q805 C706 ST-BY 5V 133V Q801 FET S R809 R802 G R803 D L802 C805 R804 Check F801(125V 4A) Ch[...]

  • Page 23

    22 TROUBLESHOOTING GUIDE 2. NO PICTURE Check the waveform of I101 #46 NG : GO to the figure c OK : Go the figure d U102 TUNER I701 MICOM XC701 32.768KHz #10 #11 #12 ST-BY 5V #29 #30 Check the crystal T-DATA T-CLOCK 5V 33V IF OUT Check the voltages #14 AFT #27 #28 SDA SCL I101 SF101 SAW FILTER #5 #6 #10 #8 #11 #12 Check IF Vcc (5V) Check clock/data [...]

  • Page 24

    23 TROUBLESHOOTING GUIDE 3. NO SOUND Check audio output signal of I101 #1 NG : Go to the figure e OK : Go to the figure f U102 TUNER I701 MICOM XC701 32.768KHz #10 #11 #12 ST-BY 5V #29 #30 Check the crystal T-DATA T-CLOCK 5V 33V IF OUT #14 AFT #27 #28 SDA SCL I101 SF101 SAW FILTER #5 #6 #10 #8 #11 #12 Check IF Vcc (5V) Check clock/data signal #3 Ch[...]

  • Page 25

    24 TROUBLESHOOTING GUIDE 4. CH DON ’ T STOP Check the input signal conditions NG : Loss of signal or weak signal OK : Go to the figure g U102 TUNER I701 MICOM #11 #12 #29 #30 T-DATA T-CLOCK 5V 33V IF OUT #14 AFT #27 #28 SDA SCL h AGC IN XC701 32.768KHz #10 ST-BY 5V Check the crystal I703 EEPROM #8 ST-BY 5V #5 #6 SDA SCL Check SDA/SCL Check 5V/33V[...]

  • Page 26

    25 TROUBLESHOOTING GUIDE 5. NO COLOR 6. NO VERTICAL DEFLECTION I101 #44 composite video in Check C.V.S waveform #43 Video/Chroma/Deflection Vcc Check the voltage #38 X502 Check the crystal #18 #19 #20 #21 RGB Vcc (9V) Check the voltage R OUT G OUT B OUT Check R/G/B signal #43 Video/Chroma/Deflection Vcc Check the voltage X502 #24 C507 C508 V RAMP A[...]

  • Page 27

    26 ROUBLESHOOTING GUIDE 7. NO ON-SCREEN DISPLAY 8. REMOTE CONTROL DOES NOT OPERATE I701 MICOM XC701 32.768KHz #10 #11 #12 ST-BY 5V Check the crystal IL701 Remote Control PREAMP ST-BY 5V GND #34 OUT Check the waveform I701 MICOM XC701 32.768KHz #10 #11 #12 ST-BY 5V Check the crystal #24 #25 SDA SCL I101 #16 #17 Check clock/data signal #20 #21 V.SYNC[...]

  • Page 28

    27 ELECTRICAL PARTS LIST LOC PART CODE PART NAME DESCRIPTION ZZ100 48B3738T01 TRANSMITTER REMOCON R-38T01 ZZ110 PTACPWH394 ACCESSORY AS DTQ-14P2FC 10 4850A02510 ANT ROD S3BW216B (L=600 MM) 30 486A716200 BATTERY AAAM 1.5V 40 4850A00250 TRANS ANT MATCHING IMT-06 ZZ120 PTBCSHH404 COVER BACK AS DTQ-14V1FS M211 4852151401 COVER BACK HIPS BK M541 4855415[...]

  • Page 29

    28 C516 CEXF1H229V C ELECTRO 50V RSS 2.2MF (5X11) TP C517 CMXB1H473J C MYLAR 50V 0.047MF J (TP) C518 CEXF1H478V C ELECTRO 50V RSS 0.47MF (5X11) TP C519 CEXF1H478V C ELECTRO 50V RSS 0.47MF (5X11) TP C520 CEXF1H109V C ELECTRO 50V RSS 1MF (5X11) TP C524 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP C525 CEXF1H109V C ELECTRO 50V RSS 1MF (5X11) TP C601 CM[...]

  • Page 30

    29 D502 D1N4148--- DIODE 1N4148 (TAPPING) D503 DUZ9R1BM-- DIODE ZENER UZ-9.1BM 9.1V D504 D1N4148--- DIODE 1N4148 (TAPPING) D505 DUZ9R1BM-- DIODE ZENER UZ-9.1BM 9.1V D701 D1N4148--- DIODE 1N4148 (TAPPING) D703 DLH2PR---- LED BLOCK LH-2P-R D704 DUZ3R9B--- DIODE ZENER UZ-3.9B D757 D1N4148--- DIODE 1N4148 (TAPPING) D801 DD2SB80--- DIODE BRIDGE D2SB80 D[...]

  • Page 31

    30 R412 RN01B369JS R METAL FILM 1W 3.6 OHM J SMALL R413 RN01B229JS R METAL FILM 1W 2.2 OHM J SMALL R414 RN01B229JS R METAL FILM 1W 2.2 OHM J SMALL R416 RD-2Z121J- R CARBON FILM 1/2 120 OHM J R418 RN02B150JS R METAL FILM 2W 15 OHM J SMALL R420 RN02B620JS R METAL FILM 2W 62 OHM J SMALL R425 RD-4Z752J- R CARBON FILM 1/4 7.5K OHM J R451 RD-4Z153J- R CA[...]

  • Page 32

    31 RC566 HRFT123JCA R CHIP 1/10 12K OHM J 2012 RC567 HRFT103JCA R CHIP 1/10 10K OHM J 2012 RC568 HRFT472FCA R CHIP 1/10 4.7K OHM F 2012 RC569 HRFT152JCA R CHIP 1/10 1.5K OHM J 2012 RC570 HRFT103JCA R CHIP 1/10 10K OHM J 2012 RC571 HRFT272JCA R CHIP 1/10 2.7K OHM J 2012 RC572 HRFT223JCA R CHIP 1/10 22K OHM J 2012 RC573 HRFT102JCA R CHIP 1/10 1K OHM [...]

  • Page 33

    32 EXPLODED VIEW 1. DTQ-14V1FS[...]

  • Page 34

    33 EXPLODED VIEW 2. DTQ-14V3FS[...]

  • Page 35

    34 EXPLODED VIEW 3. DTQ-14V5FC / FS[...]

  • Page 36

    35 EXPLODED VIEW 4. DTQ-14U1FS[...]

  • Page 37

    36 EXPLODED VIEW 5. DTQ-20V1FS[...]

  • Page 38

    37 EXPLODED VIEW 6. DTQ-20V3FS[...]

  • Page 39

    38 EXPLODED VIEW 7. DTQ-20V4FS[...]

  • Page 40

    39 EXPLODED VIEW 8. DTQ-20U1FS[...]

  • Page 41

    -1 - Mon Aug 09 09:48:04 1999[...]

  • 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 : G7F00E@web.dwe.co.kr TEL : 82-2-360-8179~8180/8187 FAX : 82-2-360-8184[...]