Daewoo DTQ-20D5FSN Service Manual
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Daewoo DTQ-20D5FSN Service Manual

Daewoo DTQ-20D5FSN Service Manual

Chassis cn-220n
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Service Manual
Color Television
CHASSIS : CN-220N
Model : DTQ - 20D5FSN / FSPN
SPECIFICATIONS
MODEL
ITEM
TV STANDARD
POWER INPUT
POWER CONSUMPTION
TUNING SYSTEM
TUNING RANGES
SOUND OUTPUT
SPEAKER
ANTENNA INPUT
IMPEDANCE
AUXILIARY INPUT
TERMINAL
INTERMEDIATE
FREQUENCIES
REMOTE CONTROL
SPECIAL FUNCTIONS
DAEWOO ELECTRONICS CO., LTD
http : //svc.dwe.co.kr
S/M No. : TCN220NTEF1
DTQ - 20D4SSPS / SSFN / SCN
DTQ - 20D4ASN / ASPN / SSN / SSPN
DTQ - 14D4SSN / SSPN / SSFN
DTQ-20D5FSN
DTQ-20D5FSPN
NTSC-M
120V 60HZ
220V 60HZ
84W
Frequency Synthesizer (FS) Tuning System
VHF : 2 ~ 13 (12)
UHF : 14 ~ 69 (56)
A~W, A- 5 ~ A-1, W + 1 ~ W + 84
5W + 5W
8 ohm 5W x 2EA
75 ohm Unbalanced
Front : Video, Audio, Earphone
Rear: Video, Audio, (R,L)
Picture IF Carrier Frequency : 45.75 MHZ
Sound IF Carrier Frequency : 41.25 MHZ
Color Sub-Carrer Frequency : 3.579545 MHZ
R - 40
AV only PIP
ICON MENU TYPE
STEREO / SAP
3 - Language OSD
with Caption
20D4SSPS
220V 60HZ
ICON MENU TYPE
STEREO / SAP
3 - Language OSD
with Caption
Apr. 2002

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Summary of Contents for Daewoo DTQ-20D5FSN

  • Page 1 R - 40 AV only PIP ICON MENU TYPE ICON MENU TYPE STEREO / SAP STEREO / SAP 3 - Language OSD SPECIAL FUNCTIONS 3 - Language OSD with Caption with Caption DAEWOO ELECTRONICS CO., LTD Apr. 2002 http : //svc.dwe.co.kr...

  • Page 2: Table Of Contents

    All manuals and user guides at all-guides.com TABLE OF CONTENTS SAFETY INSTRUCTION ........................2 SPECIFICATIONS ..........................3 CIRCUIT BLOCK DIAGRAM ......................5 ALIGNMENT INSTRUCTION ......................6 Your Remote Control ........................6 Service Mode Adjustment ......................... 7 Assembly Adjustment ........................8 SCHEMATIC DIAGRAM ........................

  • Page 3: Safety Instruction

    All manuals and user guides at all-guides.com SAFETY INSTRUCTION WARNING : Only competent service personnel may carry out work involving the testing or repair of this equipment X-RAY RADIATION PRECAUTION 1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high voltage must not exceed the specified limit.

  • Page 4: Specifications

    All manuals and user guides at all-guides.com SPECIFICATIONS CN-220N Chassis (Stereo Model) MODEL DTQ-20D5FSN DTQ-20D5FSPN DTQ-20D4SSPS ITEM TV STANDARD NTSC-M POWER INPUT 120V 50 / 60HZ 220V 50 / 60HZ 220V 50 / 60HZ POWER CONSUMPTION TUNING SYSTEM Frequency Synthesizer (FS) Tuning System...
  • Page 5 All manuals and user guides at all-guides.com SPECIFICATIONS CN-220N Chassis (Mono Model) MODEL DTQ-14D4SSN DTQ-14D4SSPN DTQ-14D4SSFN DTQ-20D4SCN DTQ-20D4ASN DTQ-20D4ASPN DTQ-20D4SSFN ITEM DTQ-20D4SSN DTQ-20D4SSPN TV STANDARD NTST-M 120V 50 / 60HZ 220V 50 / 60HZ 90-260V 50 / 60HZ 120V 50 / 60HZ POWER INPUT POWER CONSUMPTION 84W (20"), 70W (14")

  • Page 6: Circuit Block Diagram

    All manuals and user guides at all-guides.com CIRCUIT BLOCK DIAGRAM...

  • Page 7: Alignment Instruction

    All manuals and user guides at all-guides.com ALIGNMENT INSTRUCTIONS Your Remote Control 1. POWER Use this button to turn your TV on or off. 2. 0 - 9 Use these buttons to change channels. 3. MUTE Use to turn the TV’s sound on and off. POWER 4.

  • Page 8: Service Mode Adjustment

    All manuals and user guides at all-guides.com ALIGNMENT INSTRUCTIONS 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 Adjustment

    All manuals and user guides at all-guides.com 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) 15(20)
  • Page 10 All manuals and user guides at all-guides.com 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) ·...
  • Page 11 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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 ·...
  • Page 13 All manuals and user guides at all-guides.com...

  • Page 14: Exploded View

    All manuals and user guides at all-guides.com EXPLODED VIEW...
  • Page 15 All manuals and user guides at all-guides.com EXPLODED VIEW...

  • Page 16: Printed Circuit Board

    All manuals and user guides at all-guides.com PRINTED CIRCUIT BOARD...

  • Page 17: Service Parts List

    All manuals and user guides at all-guides.com SERVICE PARTS LIST is a recommendable part for stock. Caution is safety component, so it must be used the same component. PART NAME PART DESCRIPTION REMARK PART NAME PART DESCRIPTION REMARK ZZ100 TRANSMITTER REMOCON R-40C03 C804 C ELECTRO 450V LHS 150MF (25X40)
  • Page 18 All manuals and user guides at all-guides.com SERVICE PARTS LIST PART NAME PART DESCRIPTION REMARK PART NAME PART DESCRIPTION REMARK Z501 FILTER CERA XT 4.5MB CC756 C CHIP CERA 50V CH 220PF J 2012 ZZ200 PCB CHIP MOUNT B AS DTQ-20D5FSPN CC757 C CHIP CERA 50V X7R 0.033MF K 2012...
  • Page 19 All manuals and user guides at all-guides.com SERVICE PARTS LIST PART NAME PART DESCRIPTION REMARK PART NAME PART DESCRIPTION REMARK RC525 R CHIP 1/10 1K OHM J 2012 RC756 R CHIP 1/10 4.7K OHM J 2012 RC526 R CHIP 1/10 1.3K OHM J 2012 RC758 R CHIP 1/10 4.7K OHM J 2012 RC530 R CHIP...
  • Page 20 All manuals and user guides at all-guides.com SERVICE PARTS LIST PART NAME PART DESCRIPTION REMARK PART NAME PART DESCRIPTION REMARK C820 C ELECTRO 160V RSS 100MF (16X25) TP E903 EYE LET BSR T0.2 (R1.6) C882 C CERA AC U/C/V 2.5KV 4700PF TP P601 CONN WAFER YW025-04 (STICK)
  • Page 21 All manuals and user guides at all-guides.com SERVICE PARTS LIST PART NAME PART DESCRIPTION REMARK PART NAME PART DESCRIPTION REMARK C519 C ELECTRO 50V RSS 0.47MF (5X11) TP Q704 KTA1266Y (TP) C520 C ELECTRO 50V RSS 1MF (5X11) TP Q705 KTA1266Y (TP) C525 C ELECTRO...
  • Page 22 All manuals and user guides at all-guides.com SERVICE PARTS LIST PART NAME PART DESCRIPTION REMARK PART NAME PART DESCRIPTION REMARK J220 WIRE COPPER AWG22 1/0.65 TIN COATING 0.05 D822 DIODE ZENER ZY160 J221 WIRE COPPER AWG22 1/0.65 TIN COATING 0.05 D831 DIODE ZENER UZ-8.2BM...
  • Page 23 All manuals and user guides at all-guides.com SERVICE PARTS LIST PART NAME PART DESCRIPTION REMARK PART NAME PART DESCRIPTION REMARK J605 WIRE COPPER AWG22 1/0.65 TIN COATING 0.05 L806 COIL BEAD HC-3550 J607 WIRE COPPER AWG22 1/0.65 TIN COATING 0.05 L807 COIL BEAD HC-3550...

  • Page 24: The Different Parts List

    All manuals and user guides at all-guides.com DIFFERENT PARTS LIST 1. 14" Different parts list...
  • Page 25 All manuals and user guides at all-guides.com DIFFERENT PARTS LIST...
  • Page 26 All manuals and user guides at all-guides.com DIFFERENT PARTS LIST...
  • Page 27 All manuals and user guides at all-guides.com DIFFERENT PARTS LIST...
  • Page 28 All manuals and user guides at all-guides.com DIFFERENT PARTS LIST...
  • Page 29 All manuals and user guides at all-guides.com DIFFERENT PARTS LIST...
  • Page 30 All manuals and user guides at all-guides.com DIFFERENT PARTS LIST 1. 20" Different parts list...
  • Page 31 All manuals and user guides at all-guides.com DIFFERENT PARTS LIST...
  • Page 32 All manuals and user guides at all-guides.com DIFFERENT PARTS LIST...
  • Page 33 All manuals and user guides at all-guides.com DIFFERENT PARTS LIST...
  • Page 34 All manuals and user guides at all-guides.com DAEWOO ELECTRONICS CO., LTD 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX : DWELEC K28177-8 CABLE : “DAEWOOELEC”...

  • Page 35: Ic Description

    All manuals and user guides at all-guides.com APPENDIX 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...
  • Page 36 All manuals and user guides at all-guides.com APPENDIX 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.
  • Page 37 All manuals and user guides at all-guides.com APPENDIX IC DESCRIPTION 3) On Screen Displays function is interior designed. 4) Package. : 42 PIN SDI P. : I 2 C Bus. 5) Tuner (Pre-scaler.) /PLL IC : TAU 6014-S(SIEMENS). 6) Remocon. : The IC of Transmission (MITSUBISHI M50560) 7) E 2 PROM.
  • Page 38 All manuals and user guides at all-guides.com APPENDIX 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 &...
  • Page 39 -High(DC_5V):The only TV. (Option) -Low(DC_0V):Line.(Videl) Reception -High(DC_5V):Cable. (Option) -Low(DC_0V):Air. Audio -High(DC_5V):Mono.. (Option) -Low(DC_0V):Stereo. P13/ Remote -High(DC_5V):Mishubishi. PWM1 (Option) -Low(DC_0V):Daewoo(Only at Factory) Blue Back -High(DC_5V):No Blue Back. P14/PWM2 (Option) -Low(DC_0V):Blue Back. -Output P15/ Option -High(DC_5V):V-Chip. Format. PWM3 (V-Chip) -Low(DC_0V):No V-Chip. -CMOS/Nch Option -High(DC_5V):Auto Tint.
  • Page 40 All manuals and user guides at all-guides.com APPENDIX IC DESCRIPTION Terminal Name Explanation Remarks -16 pin is a spare pin. -13 pin to 16 pin. -4 bit input/output port, Nch-OD output. P87 / AN7 SPARE A/D -Input or output can be specified for each bit. -Other function.
  • Page 41 All manuals and user guides at all-guides.com APPENDIX IC DESCRIPTION Terminal Name Explanation Remarks P70 / INT0 Sound Input - 4-bit input/output port. - Input or output can be specified for each bit. P71 / INT1 - #31 : Only Cn-220, ITT(MSP) P72 / INT2 SD In Low : Front Mask/Mono, High : Back/stero...
  • Page 42 All manuals and user guides at all-guides.com APPENDIX 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...
  • Page 43 All manuals and user guides at all-guides.com APPENDIX IC DESCRIPTION ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit Supply Voltage Output Peak Current (inernally limited) Ptot Total Power Dissipation (Tcase=70oC) Operationg Temperature 0 to 70 Tstg, Tj Storage and Junction Temperature -40 to + 150 THERMAL DATA Symbol...

  • Page 44: Troubleshooting Guide

    All manuals and user guides at all-guides.com APPENDIX TROUBLESHOOTING GUIDE 1. NO POWER Check Check F801(125V 4A) D881~D884 2A05G F801 R801 PCW1 L801 Check R801(7W 2.2) Q804 TO I101 #34 C819 D807 Check Voltage 133V Check R814 L807 waveform 133V C804 C814 C820...

  • Page 45: No Picture

    All manuals and user guides at all-guides.com APPENDIX 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...

  • Page 46: No Sound

    All manuals and user guides at all-guides.com APPENDIX TROUBLESHOOTING GUIDE 3. NO SOUND NG : Go to the figure e Check audio output signal of I101 #1 OK : Go to the figure f 3-1. CN-220N CHASSIS U102 SF101 IF OUT TUNER SAW FILTER T-DATA T-CLOCK...
  • Page 47 All manuals and user guides at all-guides.com APPENDIX TROUBLESHOOTING GUIDE 3-2. CN-220N CHASSIS U102 SF101 IF OUT TUNER SAW FILTER T-DATA T-CLOCK Check #29 #30 IF AGC voltage Check I701 SIF output signal Check MICOM IF Vcc (5V) I101 If no signal, then change I101 #11 #12 Check...

  • Page 48: Don't Stop

    All manuals and user guides at all-guides.com APPENDIX 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...

  • Page 49: No Color

    All manuals and user guides at all-guides.com APPENDIX 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.

  • Page 50: No On-Screen Display

    All manuals and user guides at all-guides.com APPENDIX TROUBLESHOOTING 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...

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