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Daewoo DTQ-26S1FC Service Manual

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All manuals and user guides at all-guides.com

Service Manual

CHASSIS
NTSC-M SYSTEM
MODEL
DAEWOO ELECTRONICS CO., LTD.
OVERSEAS SERVICE DEPT.
Color Television
:
CN-200I/A
:
DTQ-26S1FC/FS/FSP(CN-200I)
DTQ-29S1FCN/FSN/FSP(CN-200I)
DTQ-26S1HC/HS/HSP(CN-200A)
DTQ-29S1HC/HS/HSP(CN-200A)

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Summary of Contents for Daewoo DTQ-26S1FC

  • Page 1: Service Manual

    All manuals and user guides at all-guides.com Service Manual Color Television CHASSIS CN-200I/A NTSC-M SYSTEM MODEL DTQ-26S1FC/FS/FSP(CN-200I) DTQ-29S1FCN/FSN/FSP(CN-200I) DTQ-26S1HC/HS/HSP(CN-200A) DTQ-29S1HC/HS/HSP(CN-200A) DAEWOO ELECTRONICS CO., LTD. OVERSEAS SERVICE DEPT.

  • Page 2: Electrical Specifications

    All manuals and user guides at all-guides.com FEATURES FS (Frequency Synthesizer) Tuning System CATV Ready Monitor Look Design A/V IN. (Stereo) Stereo/Mono Function ELECTRICAL SPECIFICATIONS POWER INPUT FC SERIES AC 120V 60Hz FS SERIES AC 85V ~ AC 150V 60Hz FSP SERIES AC 220V 50Hz/60Hz POWER RATING...
  • Page 3 All manuals and user guides at all-guides.com CONTROL VIEW F-CONNECTOR 300 OHM-75 OHM COUPLING TRANSFORMER 75Ω FROM 75 OHM VHF ANTENNA WITH CABLE OR CABLE TV SYSTEM...
  • Page 4 All manuals and user guides at all-guides.com 1. Overview of Your Equipment Your TV comes with a remote control. The section below summarizes the buttons,controls, and terminals that you will use with your TV. 2. Your TV' s Front Panel 1.
  • Page 5 All manuals and user guides at all-guides.com BLOCK DIAGRAM (CN-200I)
  • Page 6 All manuals and user guides at all-guides.com BLOCK DIAGRAM (CN-200A)
  • Page 7 All manuals and user guides at all-guides.com GENERAL ADJUSTMENTS 1. GENERAL clockwise.) 4) Rotate the RED, GREEN and BLUE BIAS controls (R917, In the majority of cases, all color televisions will need only R918, R919) counterclock wise from the maximum, set slight touch-up adjustment upon installation.
  • Page 8 All manuals and user guides at all-guides.com 10. PICTURE IF/AFT ADJUSTMENTS NOTE : THIS RECEIVER IS TRANSISTORIZED AND SPECIAL CARE MUST BE TAKEN WHEN SERVICING. READ THE FOLLOWING (NOTES BEFORE ATTEMPTING ALIGNMENT) Alignment requires an exacting procedure and should be undertaken only when necessary. Isolation transformer must be used to prevent shock hazard.
  • Page 9 All manuals and user guides at all-guides.com TROUBLE SHOOTING CHARTS NO POWER GO TO DOES QC701(POWER ON/OFF TR) OPERATE? GO TO CHECK (7.5V R816 15K 2WATT DOES SHUT DOWN CIRCUIT OPERATE? I501 103V CHECK TP10 (MAIN B+ LINE) IF #26 NORMAL &...
  • Page 10 All manuals and user guides at all-guides.com NO PICTURE CHECK THE WAVE FORM OF GO TO I501 #44 (2Vp-p) GO TO COMPOSITE VIDEO INPUT I501 LA 7674 QC501 Y-OUT VIDEO DRIVE QC201 C506 CONTRAST CHECK 210V CHECK KINE BRIGHT CONTROL H.
  • Page 11 All manuals and user guides at all-guides.com NO SOUND(CN-200I) GO TO CHECK FOR SIGNAL AT I501 #1 GO TO CHECK MONO 100% MOD -> 0.424 Vp-p #2 9V (B+) I601 CHECK 1Vp-p CHECK EXT SOUND MUTE ON: 5V (MUTE) SIGNAL OFF:L OFF: 0V #1 9V (B+)
  • Page 12 All manuals and user guides at all-guides.com NO SOUND(CN-200A) GO TO CHECK FOR SIGNAL AT I501 #1 GO TO #30 9V CHECK 4.5V (B+) CHECK MONO 100% MOD #2(9VDC) -> 0.693 Vp-p IM601 L OUT CHECK R/L OUTPUT R OUT CHECK 4.5V MUTE ON: 5V (MUTE)
  • Page 13 All manuals and user guides at all-guides.com CH DON'T STOP GO TO GOOD CHECK INPUT SIGNAL CONDITIONS LOSS OF SIGNAL OR WEAK SIGNAL IF OUTPUT I501 8, 9 U101 LA7674 TUNER CHECK ADJUST AFT WINDOW RF AGC VTG. R113 1.6V ~ 3.4V I701 LC864616A ADJUST...
  • Page 14 All manuals and user guides at all-guides.com NO COLOR CHECK CENTER 3.5V TINT APC FILTER COLOR X502 CENTER I501 CHECK LA7674 CRYSTAL 3.579545MHZ CHECK COMPOSITE C506 VIDEO Q901 Q902 QC201 Emitter Q903 LUMINANCE (-Y) VIDEO B (210V) CHECK CONNECTOR P901 NO VERTICAL DEFLECTION CHECK 9V CHECK 9V...
  • Page 15 All manuals and user guides at all-guides.com ON SCREEN DISPLAY DOES NOT OPERATE CHECK FOR,60Hz / VS R, G, B, BL CHANGE / HS I701 IF OSD DOES NOT OPERATE, CHANGE I701 CHECK FOR, 15, 734Hz OSC CHECK REMOTE CONTROL DOES NOT OPERATE IL01 REMOCON SENSOR...
  • Page 16 All manuals and user guides at all-guides.com PIN ASSIGN OF IC LC864616A(I701) 1 P10 P07 42 POWER(O) VIDEO MUTE(O) KEY OUT 2 P11 DATA(O) KEY OUT CLOCK(O) 3 P12 KEY OUT ENABLE(O) 4 P13 KEY IN 3-LAN TV/VID 5 P14 SOUND MUTE(O) KEY IN TV/VIDEO(O)
  • Page 17 All manuals and user guides at all-guides.com TROUBLE SHOOTING CHARTS NO POWER GO TO DOES QC701(POWER ON/OFF TR) OPERATE? GO TO CHECK (7.5V R816 15K 2WATT DOES SHUT DOWN CIRCUIT OPERATE? I501 103V CHECK TP10 (MAIN B+ LINE) IF #26 NORMAL &...
  • Page 18 All manuals and user guides at all-guides.com NO PICTURE CHECK THE WAVE FORM OF GO TO I501 #44 (2Vp-p) GO TO COMPOSITE VIDEO INPUT I501 LA 7674 QC501 Y-OUT VIDEO DRIVE QC201 C506 CONTRAST CHECK 210V CHECK KINE BRIGHT CONTROL H.
  • Page 19 All manuals and user guides at all-guides.com NO SOUND(CN-200I) GO TO CHECK FOR SIGNAL AT I501 #1 GO TO CHECK MONO 100% MOD -> 0.424 Vp-p #2 9V (B+) I601 CHECK 1Vp-p CHECK EXT SOUND MUTE ON: 5V (MUTE) SIGNAL OFF:L OFF: 0V #1 9V (B+)
  • Page 20 All manuals and user guides at all-guides.com NO SOUND(CN-200A) GO TO CHECK FOR SIGNAL AT I501 #1 GO TO #30 9V CHECK 4.5V (B+) CHECK MONO 100% MOD #2(9VDC) -> 0.693 Vp-p IM601 L OUT CHECK R/L OUTPUT R OUT CHECK 4.5V MUTE ON: 5V (MUTE)
  • Page 21 All manuals and user guides at all-guides.com CH DON'T STOP GO TO GOOD CHECK INPUT SIGNAL CONDITIONS LOSS OF SIGNAL OR WEAK SIGNAL IF OUTPUT I501 8, 9 U101 LA7674 TUNER CHECK ADJUST AFT WINDOW RF AGC VTG. R113 1.6V ~ 3.4V I701 LC864616A ADJUST...
  • Page 22 All manuals and user guides at all-guides.com NO COLOR CHECK CENTER 3.5V TINT APC FILTER COLOR X502 CENTER I501 CHECK LA7674 CRYSTAL 3.579545MHZ CHECK COMPOSITE C506 VIDEO Q901 Q902 QC201 Emitter Q903 LUMINANCE (-Y) VIDEO B (210V) CHECK CONNECTOR P901 NO VERTICAL DEFLECTION CHECK 9V CHECK 9V...
  • Page 23 All manuals and user guides at all-guides.com ON SCREEN DISPLAY DOES NOT OPERATE CHECK FOR,60Hz / VS R, G, B, BL CHANGE / HS I701 IF OSD DOES NOT OPERATE, CHANGE I701 CHECK FOR, 15, 734Hz OSC CHECK REMOTE CONTROL DOES NOT OPERATE IL01 REMOCON SENSOR...
  • Page 24 All manuals and user guides at all-guides.com PIN ASSIGN OF IC LC864616A(I701) 1 P10 P07 42 POWER(O) VIDEO MUTE(O) KEY OUT 2 P11 DATA(O) KEY OUT CLOCK(O) 3 P12 KEY OUT ENABLE(O) 4 P13 KEY IN 3-LAN TV/VID 5 P14 SOUND MUTE(O) KEY IN TV/VIDEO(O)
  • Page 25 All manuals and user guides at all-guides.com DESCRIPTION OF SEMICONDUCTORS LA7674 (VIF/SIF/VIDEO/CHROMA/DEFLECTION) 1. Case Outline : SDIP 52P 2. Pin Connections/Block Diagram IC501 LA7674 IF/VIDEO/CHROMA/DEF LOCK VIDEO EX A RF AGC VIDEO RF AGC AV S.W IN V TINT EX. VIN CONT TINT KILL-...
  • Page 26 All manuals and user guides at all-guides.com DTQ-26S1FC/FS/FSP/HC/HS/HSP EXPLODED VIEW...
  • Page 27 All manuals and user guides at all-guides.com DTQ-29S1FCN/FSN/FSP/HC/HS/HSP EXPLODED VIEW...
  • Page 28 All manuals and user guides at all-guides.com...
  • Page 29 All manuals and user guides at all-guides.com...
  • Page 30 All manuals and user guides at all-guides.com...
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