Samsung CB21N112TZXXEC Service Manual
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Samsung CB21N112TZXXEC Service Manual

Samsung CB21N112TZXXEC Service Manual

Color television receiver
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COLOR TELEVISION RECEIVER
COLOR TELEVISION RECEIVER
Chassis :
KS9A(P)
Model :
CB21N112TZXXEC
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CONTENTS

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Summary of Contents for Samsung CB21N112TZXXEC

  • Page 1: Table Of Contents

    COLOR TELEVISION RECEIVER Chassis : KS9A(P) Model : CB21N112TZXXEC COLOR TELEVISION RECEIVER CONTENTS Precautions Specifications and IC Data Disassembly and Reassembly Alignment and Adjustment Troubleshooting Exploded View and Parts List Electrical Parts List Block Diagram Wiring Diagram Schematic Diagrams...
  • Page 2 ELECTRONICS This Service Manual is a property of Samsung Electronics Co.,Ltd. © Samsung Electronics Co., Ltd. May. 2004 Printed in Korea Any unauthorized use of Manual can be punished under applicable AA82-01567A International and/or domestic law.

  • Page 3: Precautions

    Precautions 1. Precautions Follow these safety, servicing and ESD precautions to prevent damage and protect against potential hazards such as electrical shock and X-rays. 1-1 Safety Precautions 1. Be sure that all of the built-in protective devices are replaced. Restore any missing (READING SHOULD NOT BE ABOVE protective shields.
  • Page 4 14. Components, parts and wiring that appear to have overheated or that are otherwise damaged should be replaced with parts that meet the original specifications. Always determine the cause of damage or overheat- ing, and correct any potential hazards. Samsung Electronics...

  • Page 5: Servicing Precautions

    Precautions 1-2 Servicing Precautions Warning1: First read the “Safety Precautions” section of this manual. If some unforeseen circumstance creates a conflict between the servicing and safety precautions, always follow the safety precautions. Warning2: An electrolytic capacitor installed with the wrong polarity might explode. 1.
  • Page 6 4. Do not use freon-propelled chemicals. These unpackaged replacement ESDs. Motions such can generate electrical charges that damage as brushing clothes together, or lifting a foot ESDs. from a carpeted floor can generate enough static electricity to damage an ESD. Samsung Electronics...

  • Page 7: Specifications And Ic Data

    20 Inch A48KRD82X(H) Black stripe, 90 degree deflection 21 Inch A51KQJ63X 21 Flat A51QDX993X Power Requirements: AC 160~300V, 50/60Hz Antenna Input Impedance: VHF, UHF : Telescopic dipole antenna (75 ohm unbalanced type ) Speaker Impedance 8 ohm, 7W+7W (MAX) Samsung Electronics...
  • Page 8 SOUND-AMP (3W x 1CH or 3W x 2CH or 5W x 2CH) KA5Q0765R POWER IC (STR) IC801S CUSTOM REGULATOR (5V, 8V, 3.3V) IC802 KA7632 IC902 24C08/KS28C040 EEPROM PC801S TCET1108 / LTV817B PHOTO COUPLER SIF - IC IC101 U4468B TEMIC Samsung Electronics...
  • Page 9 KS24C080(Pin 8) U4468B(Pin 16) TRANSISTOR SAW-FILTER TRANSISTOR G3956M K9260M 2SD1651 UPC574J 2SD1650 2SD2499 KSC815-Y KA33V KSA614 KSA539-Y BC548 KTC9014 E B C TRANSISTOR LA7840 TDA6107Q KA7632 KSR1012 KSR1010 KSR2010 KTD863-Y KSC2331-Y E C B Fig. 2-1 Semiconductor Base Diagrams Samsung Electronics...
  • Page 10 MEMO...

  • Page 11: Disassembly And Reassembly

    Disassembly and reassembly 3. Disassembly and Reassembly 3-1 Back Cover Removal 1. After removing the screws, press the tension rib and pull the cabinet backwards. 2. To reassemble, press the tension rib (see diagram). Samsung Electronics...
  • Page 12 2. Remove the Anode Cap from the CRT. 3. Remove the main board by pulling it with both hands. Warning: The FBT is charged with high voltage. Before removing the Anode Cap, discharge the voltage through one of the heat sinks on the main board. Samsung Electronics...
  • Page 13 Disassembly and reassembly 3-3 Speaker Removal 1. Remove the speaker by pressing the tension rib. Samsung Electronics...
  • Page 14 Always lift the picture tube by grasping it firmly around the faceplate, (2) Never lift the tube by its neck. (3) Do not scratch the picture tube or apply excessive pressure. Fractures of the glass may cause an implosion. Samsung Electronics...

  • Page 15: Alignment And Adjustment

    Alignment and Adjustments 4. Alignment and Adjustments 4-1 Preadjustment 4-1-1 Factory Mode 4-1-3 When CRT Is Replaced 1. Do not attempt these adjustments in the Video 1. Make the following adjustments AFTER set- Mode. ting up after setting up purity and conver- gence : 2.
  • Page 16 Peaking center frequency 0 … 3 Automatic color limiting 0 … 1 Forced color limiting 0 … 1 SCBT Screen brightness 0 … 63 Sub Sharpness gain adjustment 0 … 23 PSNS Identify sensitivity PAL/NTSC decoder 0 … 1 Samsung Electronics...
  • Page 17 4-2-3 Option Bytes In the Service Mode, various can be selected via the Option Table. Example: Option Table:XX XX XX XX SYSTEM AUDIO STEREO JACK ＳＣＡＲＴ ZOOM NOR/ZOOM/16:9 AUTO POWER 2nd SIF HOTEL MODE HIGH DEVIA HELP MENU TIME V-GUARD Samsung Electronics...
  • Page 18 7. Do not attempt to connect or disconnect any wires while the TV is turned on. Make sure that the power cord is disconnected before replacing any parts. 8. To protect against shock hazard, use an isola- tion transformer. Samsung Electronics...
  • Page 19 MUTE POWER ON 3. Select "G2 adjust" by pressing channel key ▲ or ▼ 4. Enter "G2 adjust" by pressing channel key œ or √ 5. Adjust he screen Vr (On the FBT),so that OSD becomes "SCREEN ADJEST:OK" Samsung Electronics...
  • Page 20 (c) High-Light Adjustment 50 21"flat in the Factory Service Mode with Set SCT to 55 FL (20”. 21”), 65 FL(14”) in the using CA100.See Fig.4-4 1 Factory Service Mode with using CA100. See Fig. 4-4 Samsung Electronics...
  • Page 21 8. Since the 4-pole magnets and 6-pole magnets lines in the center area of the screen. interact, the dot movement is complex (Fig. 4-5). RED/BLUE GREEN BLUE BLUE RED/BLUE GREEN 6-Pole Magnet Movement 4-Pole Magnet Movement Fig. 4-5 Center Convergence Adjustment Samsung Electronics...
  • Page 22 4. Fig. 4-7 4. Adjust with VS (Vertical shift) so that the top margin of the picture is 4. Fig. 4-8 5. Adjust with HS (Horizontal Shift) so that the lion-head pattern and CRT centers are aligned. Samsung Electronics...

  • Page 23: Troubleshooting

    Measure the Check/Replace Voltage of Each Pin TU01S of TU01S Check IC201S Check/Replace Pins 2,3 IC201S See "No Sound" (Video OK) Check IC201S Check/Replace Pins 40,49,50 IC501, IC201S See "No Sound" See "No Video" (Video OK) (Sound OK) Samsung Electronics...
  • Page 24 IC802 (KA7632) Pin 9 (9V) Pin 10 (5V) Check IC201S Check/Replace Pin 1 (3.3V) IC201S Check IC201S Check/Replace Pin 1 : Stand-by : 0V IC201S, (µ-com). Normal : 3.3V Check/Replace Check IC201S, IC201S, Q401, Q402. Pin 33 (H-out) Ｄ４０２，Ｄ４０３ Samsung Electronics...
  • Page 25 IC201S Check IC201S Pins 38/R214, R215 Check IC201S Pin 49 (V-GUARD) Check/Replace Pin 50 (Cut-off) IC201S Pin 51~53 (R,G,B-out) Check IC501 Check/Replace on the CRT PCB IC501 Check/Replace R421, R505 (HEATER 6.3Vrms) D503 (CRT G1 pin) CRT, V999S Samsung Electronics...
  • Page 26 Pin 44 (Sound Out) IC201S Check/Replace Check IC601 Q904, IC201S Pins 6 (0V) Check IC601 Check/Replace Pin 3,13 (B+ 10-12.5V) R814, R815 Check/Replace Check IC601 IC601 Check/Replace A/V Front assembly. 5-5 No TTX Check/Replace Check IC201S IC201S See No Video Samsung Electronics...

  • Page 27: Exploded View And Parts List

    T0010 S.N.A 6003-001023 SCREW-TAPTITE;RWH,+,B,M3,L10,ZPC(YEL),SW T0081 S.N.A AA03-00414A CRT COLOR;A51QDX993X011,380MG,2.47MH,18M T0063 AA65-00009B CLAMPER CORE-D,COIL;21A8,NYLON 66,V0,-,- T0527 S.N.A AA60-10050R SCREW-ASSY;-,SWRCH18A,M5,L31.5,HH,+,WC,- SC016 S.N.A AA64-03924A CABINET BACK;21N11[SEH],HIPS,HB,G4309 T0015 AA60-10050T SCREW-TAPPING;-,SWRCH18A,M4,L20,RH,+,2S, T0081 S.N.A AA39-10001G CBF POWER CORD;-,KKP-419C,KLCE-2F,2.286m T0077 AA94-14389A ASSY PCB MAIN;CB21N112TZXXEC,KS9A,SDIHU, M0014 Samsung Electronics...

  • Page 28: Electrical Parts List

    ..4 C701 2401-000025 C-AL;100uF,20%,16V,GP,TP,6.3x11,5 ...3 0202-001366 SOLDER-WIRE FLUX;-,RS60S,D1.2,63Sn/37Pb, S.N.A ASSY COVER REAR ...3 T0010 AA61-01354A HOLDER-AV;15N11(SEH),HIPS HB,G4309,SV012 S.N.A M0014 AA94-14389A ASSY PCB MAIN;CB21N112TZXXEC,KS9A,SDIHU, ...3 0202-001366 SOLDER-WIRE FLUX;-,RS60S,D1.2,63Sn/37Pb, S.N.A M0002 AA90-05119A ASSY COVER REAR;21N11,KS9A,SEH S.N.A ...3 T0083 0402-001230 DIODE-RECTIFIER;FMG-G2CS,1000V,3A,DO-41, ...3 T0083 0402-001599 DIODE-RECTIFIER;DGP30L,1500,3A,DO-201AD(...
  • Page 29 ..4 H/S602 AA62-30175D HEAT SINK-PS;-,SECC,T1.0,-,33X15X30 FT-2 S.N.A ..4 R125 2001-000008 R-CARBON;15KOHM,5%,1/8W,AA,TP,1.8X3.2MM ..4 T0085 1201-001740 IC-AUDIO AMP;TDA8943,SIL,9P,850MIL,SINGL ..4 R125 2001-000011 R-CARBON;75KOHM,5%,1/8W,AA,TP,1.8X3.2MM ...3 AA97-15263A ASSY AUTO;CB21N112TZXXEC,KS9A,SDIHU,MST, S.N.A ..4 R075 2001-000016 R-CARBON(S);1OHM,5%,1/2W,AA,TP,2.4X6.4MM ..4 CISS 0401-000005 DIODE-SWITCHING;1N4148,75V,150MA,DO-35,T ..4 R075 2001-000016 R-CARBON(S);1OHM,5%,1/2W,AA,TP,2.4X6.4MM ..4 CISS 0401-000005 DIODE-SWITCHING;1N4148,75V,150MA,DO-35,T ..4 R075...
  • Page 30 2008-001011 R-FUSIBLE(S);0.18ohm,10%,2W,AF,TP,3.9x10 ..4 C701 2401-000302 C-AL;100uF,20%,25V,GP,TP,6.3x11,5 ..4 R505 2008-001076 R-FUSIBLE(S);1.8ohm,5%,2W,AF,TP,3.9x10mm ..4 C701 2401-000302 C-AL;100uF,20%,25V,GP,TP,6.3x11,5 ..4 R305 2008-001159 R-FUSIBLE(S);1.5OHM,5%,1W,AF,TP,3.9X10MM ..4 C701 2401-000302 C-AL;100uF,20%,25V,GP,TP,6.3x11,5 ..4 C598 2201-000259 C-CERAMIC,DISC;0.18NF,10%,500V,Y5P,TP,5..4 C701 2401-000360 C-AL;100uF,20%,50V,GP,TP,8x11.5,5 ..4 C598 2201-002028 C-CERAMIC,DISC;0.47NF,10%,2KV,Y5P,TP,7.5 ..4 C701 2401-000365 C-AL;100uF,20%,50V,WT,TP,10x12.5mm, Samsung Electronics...
  • Page 31 6042-000002 EYELET;ID1.5,OD2,L2.8,NI+SN,BSP3-1/2H S.N.A ..4 EY401 6042-000002 EYELET;ID1.5,OD2,L2.8,NI+SN,BSP3-1/2H S.N.A ..4 EY402 6042-000002 EYELET;ID1.5,OD2,L2.8,NI+SN,BSP3-1/2H S.N.A ..4 EY403 6042-000002 EYELET;ID1.5,OD2,L2.8,NI+SN,BSP3-1/2H S.N.A ..4 EY404 6042-000002 EYELET;ID1.5,OD2,L2.8,NI+SN,BSP3-1/2H S.N.A ..4 EY405 6042-000002 EYELET;ID1.5,OD2,L2.8,NI+SN,BSP3-1/2H S.N.A ..4 EY406 6042-000002 EYELET;ID1.5,OD2,L2.8,NI+SN,BSP3-1/2H S.N.A ..4 EY407 6042-000002 EYELET;ID1.5,OD2,L2.8,NI+SN,BSP3-1/2H S.N.A Samsung Electronics...

  • Page 32: Block Diagram

    Block Diagram 8. Block Diagram 8-1 KS9A <OPTION> AC/DC EEPROM TUNER Converter Pre- VIF SAW + S/W KA7632 VIDEO TRANS TDA6107 <OPTION> A/V-IN B/+8V U.O.C Back JACK TUNER & V-Drive VERTICAL A/V-OUT B/+5V Micom In/Out LA78040 A/+3.3V A/+13V SMPS Front-A/V CONT H-Drive ROLER...

  • Page 33: Wiring Diagram

    SOUND L OUT SOUND L IN SOUND R OUT SOUND R IN CN603 FRONT AUDIO IN R + OUT R - OUT 21 PIN AUDIO IN L + OUT L - OUT 21 PIN VIDEO IN FRONT VIDEO IN Samsung Electronics...
  • Page 34 MEMO...

  • Page 35: Schematic Diagrams

    TP 05 TP 10 TP 08 TP 03 TP 11 TP 12 TP 06 TP 13 TP 07 TP 09 TP07 TP08 TP09 TP 01 TP 14 TP 02 TP10 TP11 TP12 TP13 TP14 : Power Line Samsung Electronics 10-1...
  • Page 36 Schematic Diagrams 10-2 SOUND, EXT -A/V (SCART) : Power Line 10-2 Samsung Electronics...
  • Page 37 Schematic Diagrams 10-3 SOUND, EXT-A/V (RCA) : Power Line Samsung Electronics 10-3...
  • Page 38 Schematic Diagrams 10-4 POWER / CRT / VERTICAL / HORIZONTAL TP01 TP02 TP06 TP03 TP05 TP04 TP04 TP03 TP02 TP05 TP06 TP01 : Power Line 10-4 Samsung Electronics...
  • Page 39 Schematic Diagrams 10-5 SUB PCB-MONO Samsung Electronics 10-5...
  • Page 40 Schematic Diagrams 10-6 SUB PCB-STEREO 10-6 Samsung Electronics...

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