S/M No.:CN001N-010 Service Manual 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-14V1FCN DTQ-14V5FCN DTQ-14V3FCN DTQ-20V4FCN DTQ-14U1FSN DAEWOO ELECTRONICS CO., LTD http : //svc.dwe.co.kr Dec.
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 ...............................................................................................................................
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO - VIDEO PRODUCTS CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY. NEVER 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.
PRODUCT SAFETY SERVICING GUIDELINES FOR COLOR TELEVISION RECEIVERS GRAPHIC SYMBOLS : 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.
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 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.
SPECIFICATIONS ITEMS DTQ-14/20V1FCN MODEL DTQ-14V5/20V4FCN DTQ-14/20V1FSN DTQ-14/20U1FSN DTQ-14V5/20V4FSN DTQ-14/20V3FSN TV STANDARD DTQ-14/20U1FSPN NTSC-M POWER INPUT AC 120V 60 Hz AC 220V 50/60 Hz 14 = 55W 20 = 68W POWER CONSUMPTION TUNING SYSTEM Frequency Synthesizer ( FS ) Tuning System TUNING RANGES VHF : 2 ~ 13 (12) UHF : 14 ~ 69 (56) CATV : 1 ~ 125 (125) SOUND OUTPUT SPEAKER 1.3 W 1.3 W+1.
A.
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 buttons of remote control in sequence as follows. 1 → MUTE → DISPLAY → MUTE • Then, the screen will appear as follows.
ALIGNMENT INSTRUCTIONS Table-B MODE S2 S5 S6 S7 S8 S9 S12 ADJUSTMENT ITEMS Screen Adjustment DATA INITIAL RANGE - - REMARKS Auto RF AGC - - Video Level (VIDEOL) 7 0~7 Must be set to 7 RF AGC Delay (RFAGCD) * 0 ~ 63 Align RF AGC threshold FM Level (FM.LEV) 8 0 ~ 31 Must be set to 20 AGC Point 3.75 - A/D VALUE - - Horizontal Phase(H.PHASE) * 0 ~ 31 Align sync to flyback pulse, using internal cross pattern(S7) Vertical Position (V.
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. IF CONTROL AUTO RFAGC START VIDEOL 7 RFAGCD 10 FM.LEV 8 AGC POINT 3.
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.
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.
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. •Using the the channel up ( ¡ã ) or down ( ¡å ) duttons, select prental control. •Using the volume up ( ¢º ), set the password Menu. •Push buttons of remote control in sequence as follows. 2 2 1 1 •Parental control password is reset.
VOLTAGE CHART LOC I101 MODE PIN 1 2 3 4 5 6 70 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 ON 2.37 2.3 2.63 2.22 2.88 2.88 4.92 2.25 2.29 4.9 4.85 3.94 1.5 1.53 1.53 0 8.04 2.52 2.63 2.59 0.2 0.22 2.56 5.14 2.65 0.69 0.81 1.71 0 NC 2.79 0 0 0.36 3.41 0.55 2.81 3.27 0 0 2.52 4.95 LOC OFF 0 0 0 0.49 0 0 0 0.57 0 0.28 4.89 4.84 0 0 0 0 0 0 0 0 0 0 0 0 4.23 2.2 0.16 1.37 1.4 0 NC 0.31 0 0 0 0 0 0.35 0 0 0 0 0.
VOLTAGE CHART LOC I701 LOC I701 MODE PIN 1 2 3 4 50 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 ON 4.9 4.81 5.04 5.04 1.9 2.68 4.97 5.04 0 2.22 0 4.95 3.4 2.69 0 4.65 4.14 0 0 0 0 NC NC 0 I703 LOC I801 MODE PIN 26 27 28 29 30 31 32 33 34 35 36 LOC OFF 4.89 4.8 4.99 4.99 0 1.9 2.66 4.92 4.99 0 0.49 4.89 4.89 3.37 2.47 3.52 4.99 4.99 0 0 0 0 NC NC 0 ON 0 3.81 4.97 4.77 5.04 4.08 5.04 0 5.04 0 0 OFF 0 3.46 4.92 4.71 4.99 0 4.99 0 4.99 0 0 14 MODE PIN 1 20 30 40 5 6 70 8 ON 0 4.
VOLTAGE CHART LOC Q201 Q401 Q402 Q403 Q404 Q602 Q701 Q702 MODE PIN C E B C E B0 C E B0 C E B C E B0 C E B C E B0 C E B0 ON 5.02 3.32 2.49 38.6 0 132 0 0.59 0 0 10.1 0 9.71 1.69 2.31 5.02 0 5.02 0 LOC OFF 0 3.28 2.48 42.28 0 0 0 0 0 0 0 0.66 0 0 0 0 0 0 4.99 0 0 5 0 0 Q703 Q704 Q707 Q760 Q804 Q805 Q851 15 MODE PIN C E B0 C E B C E B C E B C E B C E B C E B ON 5.02 0 4.93 4.95 4.32 5.02 0.21 0.07 2.89 0 0 0.4 133.1 132.6 12.31 5.02 5.6 4.01 0 0 OFF 5 0 0 4.9 4.92 4.29 4.2 5 4.9 0 0 0.
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 16
WAVEFORMS (9) I701 PIN 7 (10) I701 PIN 17 1) I701 PIN 18 (12) I801 PIN 2 (13) T402 PIN 25.5V (14) T402 PIN 10.
WAVEFORMS (17) T401 PIN H.V .
SCHEMATIC DIAGRAM 19
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EXPLODED VIEW 2.
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EXPLODED VIEW 5.
EXPLODED VIEW 6.
EXPLODED VIEW 7.
EXPLODED VIEW 8.
ELECTRICAL PARTS LIST CAUTION “I“is a safety part, so it must be used the same part. “2 ”is a recommendable part for essential stock.
ELECTRICAL PARTS LIST LOC PART CODE RS801 DSVC471D14 PART NAME VARISTOR LOC PART CODE SVC471D14A DESCRIPTION I REMARK JC703 HRFT000-CA R CHIP PART NAME 1/10 0 OHM 2012 DESCRIPTION 2 I SCT1 4859303930 SOCKET CRT ISMG03S INCHANG JC704 HRFT000-CA R CHIP 1/10 0 OHM 2012 SF101 5PTSF5241P FILTER SAW TSF5241P RC105 HRFT153JCA R CHIP 1/10 15K OHM J 2012 T401 50D10A3--- TRANS DRIVE TD-10A3 RC150 HRFT153JCA R CHIP 1/10 15K OHM J 2012 T402 50H0000198 FBT FSA37012M 2 I RC
ELECTRICAL PARTS LIST LOC PART CODE RC655 HRFT162JCA R CHIP PART NAME 1/10 1.6K OHM J 2012 DESCRIPTION REMARK C410 LOC CEXF2E100V C ELECTRO 250V RSS 10MF (10X20) TP RC701 HRFT220JCA R CHIP 1/10 22 OHM J 2012 C414 CEXF1V471V C ELECTRO 35V RSS 470MF (10X20) TP RC704 HRFT102JCA R CHIP 1/10 1K OHM J 2012 C415 CEXF1C102V C ELECTRO 16V RSS 1000MF (10X20) TP RC705 HRFT472JCA R CHIP 1/10 4.
ELECTRICAL PARTS LIST LOC PART CODE PART NAME DESCRIPTION REMARK LOC 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 EYE LET BSR T0.2 (R2.3) C511 CMXM2A333J C MYLAR 100V 0.033MF J (TP) E107 4856310600 EYE LET BSR T0.2 (R2.3) C512 CEXF1H108V C ELECTRO 50V RSS 0.
ELECTRICAL PARTS LIST LOC PART CODE PART NAME DESCRIPTION REMARK LOC PART CODE PART NAME DESCRIPTION Q805 TKTC3205Y- TR KTC3205Y (TP) D701 D1N4148--- DIODE 1N4148 (TAPPING) Q851 TKSC945CY- TR KSC 945C-Y (TAPPING) D704 DUZ3R9B--- DIODE ZENER UZ-3.9B R301 RN01B471JS R METAL FILM 1W 470 OHM J SMALL D790 D1N4148--- DIODE 1N4148 (TAPPING) R302 RN01B471JS R METAL FILM 1W 470 OHM J SMALL D812 DUZ5R6BM-- DIODE ZENER UZ-5.6BM R303 RN01B129JS R METAL FILM 1W 1.
ELECTRICAL PARTS LIST LOC PART CODE PART NAME DESCRIPTION REMARK LOC PART CODE PART NAME DESCRIPTION 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 1/4 330 OHM J J955 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING R602 RD-2Z271J- R CARBON FILM 1/2 270 OHM J J956 85801065GY WIRE COPPER AWG22 1/0.
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.
IC DESCRIPTION Appendix U-COM(I701) X’TAL:32.
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. : 352 x 9bits.(for CRT Display) 3) OSD Function. ¤ Screen Display. ¡ ¤ RAM ¡ : 36 characters x 16 lines.(by software) : 352 words. (9 bits per word) Display area. : 36 words. x 8 lines. 1st control area. : 8 words.
IC DESCRIPTION Appendix 3) On Screen Displays function is interior designed. 4) Package. : 36 PIN SDIP. 5) Tuner (Pre-scaler.) 6) Remocon. : I2C Bus. /PLL IC : TAU 6014-S(SIEMENS). : The IC of Transmission (MITSUBISHI M50560) 7) E2PROM. 8) 6-Local Key. 9) Option S/W 10) IF/V/C/D IC : 24C04(I2C Bus) ◊ Apply one byte Read/Write mode. : A/D Input Control.(Power, Ch Up/Down, Vol Up/Down, Menu) : Port Input Option Check. :DTC814(LA79814) 4. Function. 1) C. C. D. function. - A section of C. C. D.
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. - Input(TV/Line) Controlled function. ----------------------- (Option) - Reception.(Air/Cable : Factory Initial Condition) - Blue Background.
IC DESCRIPTION Appendix 6. Pin Description PIN Terminal Name ROM Data Main IC Data ROM CLK Main IC CLK Explanation Remarks 1 P10/SDA0 2 P11/SCLK0 3 P12/SDA1 Tuner Data 4 P13/SCLK1 Tuner CLK 5 VSS GND 6 XT1 XT1 XT2 XT2 8 VDD VDD 9 P04/AN4 KEY-IN Power, Ch up/down, Vol up/down, Menu 10 P05/AN5 AFT-IN Dc value that comes from the 10 pin of LA76810/14 11 P06/AN6 AGC-IN Connect this port to AGC of Tuner Default Voltage : 3.75V Variable Voltage : 3.25V, 3.5V, 4.
IC DESCRIPTION Appendix PIN Terminal Name Explanation 21 B B Blue output terminal of RGB image 22 BL BL Fast blanking control signal Switch TV image Signal and caption / OSD image signal Output terminal 23 P31 Audio Mute 24 P32 Power On Use when does power off/on Power off: Output Low(DC 0V) Power on: Output High(DC 5V) 25 P70/INT0 Bus Stop No Use 26 P71/INT1 Relay On/Off Relay On/Off Terminal 27 P72/INT2 A/V Detection Detect port of Front A/V 28 P73/INT3 Remocon In Input
IC DESCRIPTION Appendix I101 DCT814(LA76814) : IC VIDEO PROCESSOR AUDIO OUT 1 54 SIF INPUT FM OUTPUT 2 53 SIF APC FILTER PIF AGC 3 52 SIF OUTPUT RF AGC OUT 4 51 EXT. AUDIO INPUT PIF INPUT1 5 50 VCO FILTER PIF INPUT2 6 49 VCO COIL1 IF GND 7 48 VCO COIL2 IF VCC 8 47 APC FILTER FM FILTER 9 46 VIDEO OUTPUT AFT OUTPUT 10 45 BLACK LEVEL DETECTOR 11 44 INT. VIDEO INPUT(S-C IN) BUS CLOCK 12 43 VIDEO/VER. VCC ABL IN 13 42 EX.
Appendix TROUBLESHOOTING GUIDE 1.
TROUBLESHOOTING GUIDE Appendix 2.
TROUBLESHOOTING GUIDE Appendix 3.
TROUBLESHOOTING GUIDE Appendix 4.
TROUBLESHOOTING GUIDE Appendix 5. NO COLOR 6.
TROUBLESHOOTING GUIDE Appendix 7. NO ON-SCREEN DISPLAY 8.