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Samsung CS21A550MLK Service Manual
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Samsung CS21A550MLK Service Manual

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SERVICE
COLOR TELEVISION
Refer to the service manual in the GSPN (see the rear cover) for the more information.
COLOR TELEVISION
Chassis : KSBH(P)_CB1J
Model : CS21A550MLKXXV
Manual
1. Precaution
3. Disassembly & Reassembly
5. Exploded View & Part List
CS21A550MLK

CONTENTS

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Summary of Contents for Samsung CS21A550MLK

  • Page 1 1. Precaution 2. Product Specification 3. Disassembly & Reassembly 4. Troubleshooting 5. Exploded View & Part List 6. Wiring Diagram 7. Schematic Diagram CS21A550MLK Refer to the service manual in the GSPN (see the rear cover) for the more information.
  • Page 2 Asia asia.samsungportal.com Mideast & Africa mea.samsungportal.com © Samsung Electronics Co.,Ltd. Jan. 2009 This Service Manual is a property of Samsung Electronics Co.,Ltd. Printed in Korea Any unauthorized use of Manual can be punished under applicable AA82-00000A International and/or domestic law.

  • Page 3: Table Of Contents

    Table of Contents 1. Precaution 1-1 Safety Precautions ..............................1-1 1-2 Servicing Precautions ..............................1-3 1-3 Static Electricity Precautions ............................1-4 1-4 Installation Precautions ...............................1-5 2. Product Specification 2-1 Product Specification ..............................2-1 2-2 Specifications Analysis ..............................2-2 2-3 Accessories .................................2-3 3. Disassembly & Reassembly 3-1 Overall Disassembly &...

  • Page 4: Safety Precautions

    These two grounding systems are separated in the circuit using an unbreakable/unchangeable insulation material. 8. When any parts, material or wiring appear overheated or damaged, replace them with new regular ones immediately. When any damage or overheating is detected, correct this immediately and make a regular check of possible errors. Samsung Electronics...
  • Page 5 ). Use only regular parts for replacements (in particular, flame resistance and dielectric strength specifications). Irregular parts or materials may cause electric shock or fire. When separate the cable connecting the FBT and CRT,using the JIG discharge the electricity inside the CRT. picture is as below: Samsung Electronics...

  • Page 6: Servicing Precautions

    The ground lead of the tester should be removed last. 9. Beware of risks of any current leakage coming into contact with the high-capacity capacitor. 10. The sharp edges of the metal material may cause physical damage, so protect yourself by wearing gloves during the repair. Samsung Electronics...

  • Page 7: Static Electricity Precautions

    These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Samsung Electronics...

  • Page 8: Installation Precautions

    6. Keep the antenna far away from any high-voltage cables and install it firmly. Contact with the high-voltage cable or the antenna falling over may cause fire or electric shock. 7. Check the basics of the screen test. - Image position/size, Tilt adjustment, Actuator activation . Samsung Electronics...
  • Page 9 MEMO Samsung Electronics...

  • Page 10: Product Specification

    Video UOC TOP 1H Comb Filter Sound Output : 5Wx2 LA42032 Cabinet 21AM0 Cabinet AM0 Cabinet Specification Model CS21A550MLK Screen Size 21” Dimensions (WxHxD) 610 x 504 x 371 mm Weight 19.5 kg SEA: 220~240V Voltage MID-ASIR: 100~240V Speaker Output...

  • Page 11: Specifications Analysis

    Product Specification 2-2 Specifications Analysis ※ : application, : non-application Model CS21A550MLK (KSBH) CS-21Z45MJ (KSCA) Design Product Type Ultra Slim Marathon CRT Ultra Slim Fit CRT Digital TV Analog Analog Basic Digital Display 576i/480i 576i/480i Screen Size Aspect Ratio Progressive Scan...

  • Page 12: Accessories

    2-3-1 Supplied Accessories Accessories Item Item code Remark Remote Control BN59-00891A Batteries 4301-000121 Power Cord AA39-10006X Samsung Service center Owner’s Instructions AA68-03999B Warranty Card AA68-03753A Registration Card AA68-03754A Safety Guide Manual AA68-03242M 2-3-2 Accessories that can be purchased additionally Accessories...
  • Page 13 MEMO Samsung Electronics...

  • Page 14: Disassembly & Reassembly

    Since there is a danger of injury from the remaining current and of damaging the product due to static electricity, make sure to remove the power cord and wait for a moment so that the remaining current is discharged completely before disassembling the product. Samsung Electronics...
  • Page 15 Pull the chassis while pushing the clip fixing the Front Cabinet and the Holder Chassis. ① Separate the CRT Ass’y from the CRT. ② Separate the TBC wire, GND cables from the CRT Ass’y sequentially. Samsung Electronics...
  • Page 16 Pull the wires while scratching of the material and the PCB. pressing on the fixing clip. Pull the wires while pressing on the fixing clip. Samsung Electronics...
  • Page 17 MEMO Samsung Electronics...

  • Page 18: Troubleshooting

    ② Check that the Master Switch has been pressed. ③ Ch eck that the transmitter is turned on. ④ Check that transmitter device selection is set to TV. ⑤ Check that the signal cable is properly connected. ⑥ Check that channel setting has been set. Samsung Electronics...

  • Page 19: Checkpoints By Error Mode

    AV item is grayed out, you cannot select an A/V channel. Check if the connector is properly connected. Check if the menu is grayed out. If a menu is grayed out, it cannot be Cannot select a menu. selected. Samsung Electronics...
  • Page 20 The sound is very low. ■ Set the auto volume control to ON. There is a lot of noise. Keep the antenna away from the power cord or connectors if possible. The selected language does not appear. Press the Multiplex button to select the TV. Samsung Electronics...
  • Page 21 This noise may occur when the plastic material inside the TV expands or The TV makes a noise as if something is dropping contracts according to the seasonal temperature or humidity. This is like the inside. noise from a furniture/cabinet/sink unit, and there is no need for concern. Samsung Electronics...
  • Page 22 Therefore, you can determine whether the software has been properly downloaded, if you know the correct checksum for that version of the software. You can check the checksum according in the following order. Factory Mode → Checksum → Enter → Output Checksum (e.g. 0xab2b) ■ Checksum Examples T-SIXPEANL-1000.3 Checksum=E068 Samsung Electronics...
  • Page 23 Main Board. the cable from the Connect the cable Main Board th the CRT Ass’y properly innected? SOUND IC BRIDGE DIODE SMPS-TR VERTICAL IC MAIN TRANS MICOM SMD IC EW DRIVER DY-JACK TUNER OUTPUT TR Q401 INPUT JACK Samsung Electronics...
  • Page 24 Is the power cord or the master switch out of order? Check the others part Check the FUSE “FP801S” Check the “D801S” #1 Check the IC801S #1 W6753F Change “FP801S” Change “D801S” Change “IC801S” Complete F801A BRIDGE DIODE SMPS-TR Samsung Electronics...
  • Page 25 2. No Sound - when the power is normal No sound (1st power OK) Check the +14V line Check IC201 Pin#39.40 Check D809C Check FD801S Change IC601 Change FD801S Change D809C Complete D809C FD801S MICOM SMD IC SOUND IC Samsung Electronics...
  • Page 26 Check the others B+ line “D811” T444 B+ Pin #3 Check D407 CHECK CRT ASS`Y open and check Open and check Change the “D811” Check the “Q401” Change D407 Change the “Q401” Complete MAIN TRANS D407 OUTPUT TR Q401 Samsung Electronics...

  • Page 27: Troubleshooting By Blocks

    If there is no signal measured even though the RF signal received by the external antenna is input to the Main Board Tuner. - Supplied Power: 5V, 8V, 33V - RF Trouble Check: Check CVBS output - AUDIO Trouble Check: Check SiF Signal output B+5V B+33V 4-10 Samsung Electronics...
  • Page 28 If the signal input change “and output are” to “is” not detected, check the following. - Supplied Power: UOC TOP IC(5V, 3.3V, 8V) - Input Problem Check: Check the connecting jacks. MONITOR-OUT-L AV2-IN-L AV1-IN-L MONITOR-OUT-R MONITOR-OUT-V AV1-IN-R AV1-IN-V AV2-IN-V AV2-IN-R AV1-IN-L AV2-IN-V AV2-IN-R Monitor-OUT-R MONITOR-OUT-V AV-IN-V AV-L-IN AV-R-IN MONITOR-OUT-L Samsung Electronics 4-11...
  • Page 29 Troubleshooting 3. TDA12156H/N3 Diagnosis IF+MICOM+VIDEO 4-12 Samsung Electronics...
  • Page 30 Troubleshooting 4. LA42032 Diagnosis - Supplied Power: 11V - Input Problem Check: L/R - Output Problem Check: L+, L-, R+, R Samsung Electronics 4-13...

  • Page 31: Adjustment

    If there are some ‘spotted’ points on the screen when displaying a black and white picture, degauss the screen using the degauss coil. If the spotted points remain, re-adjust the purity and the convergence. This completes the basic performance examination. 4-14 Samsung Electronics...
  • Page 32 Data Required Adjustment x: 265± 5 y: 265± 5 Y: 45± 3 White Balance White Balance (Standard Data) x: 265± 5 y: 265± 5 Y: 1.5± 0.3 Toshiba Pattern Screen Voltage Same As KSCB Chassis G2 Adjust Samsung Electronics 4-15...
  • Page 33 2. Hotel Option Initial Data Item Selection Others Indonesia model Hotel Mode On/Off Power On Channel 0 ~ 99 Power on volume 0 ~ 100 Max Volume 0 ~ 100 Pannel Button Lock On/Off Power On Source Off/TV/AV1/AV2/DVD 4-16 Samsung Electronics...
  • Page 34 Troubleshooting Samsung Electronics 4-17...
  • Page 35 R Cutoff Adjust G Cutoff B Cutoff Adjust R Drive Adjust G Drive B Drive Adjust Sub Bright Adjust Sub Contrast Adjust Bluescreen Contrast Adjust G2 Adjust Bright 9 TR AKB Option Cathode Drive Level W/B adjust Margin 4-18 Samsung Electronics...
  • Page 36 Item Data Initial value Remarks RF AGC Adjust 2.11±0.05V IF AGC Speed IF Demodulator Fast Filter IF PLL RF FOA/FOB VCR RF output AV FOA/FOB RF PAL Ident Sensitivit RF NTSC Ident Sensitivit AV PA/NT Ident Sensitivit Samsung Electronics 4-19...
  • Page 37 Wide Blanking Front Secam Blanking Wide Blanking Rear Secam Blanking Cut Off Contorl Range 8. YC Delay Item Data Initial value Remarks PAL Delay SECAM Delay NTSC Delay PAL AV Delay SECAM AV Delay NTSC AV Delay 4-20 Samsung Electronics...
  • Page 38 0: 123 degree Dynamic Skin 1: 117 degree Gamma & White Stretch 0 ~ 3 0: No black level shift DC Transfer Ratio 1: black level shift 0: Japanese matrix NTSC Matrix 1: USA matrix DCXO CAP Samsung Electronics 4-21...

  • Page 39: Service Adjustment

    2. Press “Power Off → Info → Menu → Mute → Power On” using the remote control and enter Factory Mode. 3. Enter Deflection Mode. 4. Adjust the V-AMP, V-SHIFT, H-EW and H-SHIFT items so that the width becomes 92 and the height becomes 92. 4-22 Samsung Electronics...
  • Page 40 7. When the adjustments are complete, display the Lion pattern and check that the picture size has not been changed. If there is no change, finish the adjustments. Samsung Electronics 4-23...
  • Page 41 ■ Adjusting the Screen Voltage 1. Select: Power OFF Info Menu Mute POWER ON 2. Initialize all settings to the values appropriate to the corresponding model make sure the video adjust 1 is the factory date,just as the following picture. 4-24 Samsung Electronics...
  • Page 42 Mute POWER ON 1. Select: 2. Initialize all settings to the values appropriate to the corresponding model. 3. Display the Toshiba pattern and adjust the White Balance using CA100 with the coordinates of the corresponding model. [CA100] Samsung Electronics 4-25...
  • Page 43 4. When the adjustment is finished, check the following checklist. - If there is a spot on the screen when turning the TV set off/on, adjust the Screen Voltage again. - If there is a ghost line on the screen, adjust the Screen Voltage again. 4-26 Samsung Electronics...
  • Page 44 MEMO Samsung Electronics 4-27...

  • Page 45: Exploded View & Part List

    Exploded View & Part List 5. Exploded View & Part List 5-1 CS21A550MLKXXV Exploded View Samsung Electronics...
  • Page 46 AA64-04584A KNOB POWER 21AM0(TTSEC),ABS,BLK,HB,BKN15 S.N.A T0063 AA03-00580A CRT COLOR A51QGZ 791X301,0mG,0.900,2.30, T0066 AA96-20109C ASSY POWER CORD -,CP2/NO(4.0),H/C300,EU, T0156 AA61-00721C HOLDER-RAIL H4,HIPS,V0,-,-,-,GRAY,NON-DE S.N.A T0175 AA96-05363A ASSY SPEAKER P 8ohm,5W,700mm,500mm,21Z50 T0607 AA61-40113A STOPPER-PCB 501H,HIPS,-,-,HB,NTR,- S.N.A W012 AA64-04582A WINDOW-RMCLED 21AM0(TTSEC),PC,T2.5,CLEAR S.N.A Samsung Electronics...

  • Page 47: Cs21A550Mlkxxv Electrical Part List

    C-CERAMIC,DISC 0.47NF,10%,500V,Y5P,TP,5. C820 2201-000229 C-CERAMIC,DISC 0.15NF,10%,2KV,Y5P,TP,6.3 C820A 2201-000229 C-CERAMIC,DISC 0.15NF,10%,2KV,Y5P,TP,6.3 C823 2201-000291 C-CERAMIC,DISC 1NF,10%,500V,Y5P,TP,7.5X3 C824 2305-000289 C-FILM,LEAD-PEF 220nF,5%,63V,TP,-,5mm C826 2301-001194 C-FILM,LEAD-PPF 470nF,5%,250V,TP,18x16x8 C828 2201-000374 C-CERAMIC,DISC 0.22NF,5%,50V,C0G,TP,10.5 C843 2201-000863 C-CERAMIC,DISC 0.68NF,10%,50V,Y5P,TP,5X3 C844 2305-000665 C-FILM,LEAD-PEF 100nF,5%,63V,TP,7.5x4.0x C845 2201-000599 C-CERAMIC,DISC 0.56NF,10%,500V,Y5P,TP,5. Samsung Electronics...
  • Page 48 1N4148,75V,150mA,DO-35,T S.N.A D807 0402-001604 DIODE-RECTIFIER MUR420,200V,4A,DO-201AD, D809C 0402-001604 DIODE-RECTIFIER MUR420,200V,4A,DO-201AD, D811 0402-001603 DIODE-RECTIFIER MUR480E,800V,4A,DO-201AD D813 0402-000254 DIODE-RECTIFIER RGP10J,600V,1A,DO-41,TP DZ203 0403-000720 DIODE-ZENER MTZJ9.1B,8.57-9.01V,500mW,DO DZ206 0403-000720 DIODE-ZENER MTZJ9.1B,8.57-9.01V,500mW,DO DZ207 0403-000720 DIODE-ZENER MTZJ9.1B,8.57-9.01V,500mW,DO DZ208 0403-000720 DIODE-ZENER MTZJ9.1B,8.57-9.01V,500mW,DO DZ209 0403-000720 DIODE-ZENER MTZJ9.1B,8.57-9.01V,500mW,DO Samsung Electronics...
  • Page 49 INDUCTOR-AXIAL 10UH,10%,2534 L207 2701-000114 INDUCTOR-AXIAL 10UH,10%,2534 L208 2701-000184 INDUCTOR-AXIAL 4.7UH,10%,2534 L209A 2701-000184 INDUCTOR-AXIAL 4.7UH,10%,2534 L210 2701-000114 INDUCTOR-AXIAL 10UH,10%,2534 L211 2701-000184 INDUCTOR-AXIAL 4.7UH,10%,2534 L213 2701-000114 INDUCTOR-AXIAL 10UH,10%,2534 L223 2701-000184 INDUCTOR-AXIAL 4.7UH,10%,2534 L224 2701-000184 INDUCTOR-AXIAL 4.7UH,10%,2534 L2514 3301-000287 BEAD-AXIAL ,3.5x1.0x6.0mm,3000mA,TP,,,50 Samsung Electronics...
  • Page 50 R409 2001-000734 R-CARBON 4.7Kohm,5%,1/8W,AA,TP,1.8x3.2mm R410 2001-000009 R-CARBON 20Kohm,5%,1/8W,AA,TP,1.8x3.2mm S.N.A R411 2001-001000 R-CARBON 82Kohm,5%,1/8W,AA,TP,1.8x3.2mm R413 2008-000206 R-FUSIBLE(S) 1ohm,5%,1/2W,AF,TP,2.5x6.5m R414 2008-000206 R-FUSIBLE(S) 1ohm,5%,1/2W,AF,TP,2.5x6.5m R415 2001-000429 R-CARBON 1Kohm,5%,1/8W,AA,TP,1.8x3.2mm R416 2001-000622 R-CARBON 300Kohm,5%,1/8W,AA,TP,1.8x3.2mm R418 2008-001137 R-FUSIBLE(S) 3.3ohm,5%,1W,AF,TP,3.9x10mm R426 2003-002288 R-METAL OXIDE(S) 2.2Kohm,5%,2W,AF,TP,3.9 Samsung Electronics...
  • Page 51 S.N.A RD294 2001-000969 R-CARBON 75ohm,5%,1/8W,AA,TP,1.8x3.2mm S.N.A RD295 2001-000563 R-CARBON 27Kohm,5%,1/8W,AA,TP,1.8x3.2mm S.N.A RD296 2001-000008 R-CARBON 15Kohm,5%,1/8W,AA,TP,1.8x3.2mm RD296A 2001-000563 R-CARBON 27Kohm,5%,1/8W,AA,TP,1.8x3.2mm S.N.A RD297A 2001-000008 R-CARBON 15Kohm,5%,1/8W,AA,TP,1.8x3.2mm RD298 2001-000969 R-CARBON 75ohm,5%,1/8W,AA,TP,1.8x3.2mm S.N.A RD298A 2001-000563 R-CARBON 27Kohm,5%,1/8W,AA,TP,1.8x3.2mm S.N.A RD299A 2001-000008 R-CARBON 15Kohm,5%,1/8W,AA,TP,1.8x3.2mm Samsung Electronics...
  • Page 52 TR-SMALL SIGNAL KSC2330-R,NPN,1W,TO-92L, Q505 0501-000266 TR-SMALL SIGNAL BF423,PNP,830mW,TO-92,BK Q506 0501-002014 TR-SMALL SIGNAL KSC2330-R,NPN,1W,TO-92L, Q507 0501-002014 TR-SMALL SIGNAL KSC2330-R,NPN,1W,TO-92L, Q508 0501-000266 TR-SMALL SIGNAL BF423,PNP,830mW,TO-92,BK Q509 0501-002014 TR-SMALL SIGNAL KSC2330-R,NPN,1W,TO-92L, R501 2001-000857 R-CARBON 560ohm,5%,1/8W,AA,TP,1.8x3.2mm S.N.A R502 2001-000857 R-CARBON 560ohm,5%,1/8W,AA,TP,1.8x3.2mm S.N.A Samsung Electronics...
  • Page 53 S.N.A T0003 AA96-05479F ASSY COVER P-FRONT 21AM0(SAVINA),HIPS,HB M0081 6003-001019 SCREW-TAPTITE RH,+,-,B,M4,L12,ZPC(BLK),S S.N.A M0081 6003-001019 SCREW-TAPTITE RH,+,-,B,M4,L12,ZPC(BLK),S S.N.A T0069 AA60-00091R SPACER-FELT ,FELT,250X10,,,BLK,T0.5,, S.N.A T0607 AA61-40113A STOPPER-PCB 501H,HIPS,-,-,HB,NTR,- S.N.A CIS7 AA61-60003J SPRING ETC-CS -,SUS304,-,-,OD6,N7,OD6,-, S.N.A W012 AA64-04582A WINDOW-RMCLED 21AM0(TTSEC),PC,T2.5,CLEAR S.N.A Samsung Electronics...
  • Page 54 ASSY FIXING T0892 AA91-10748B ASSY FIXING CP2/NO,250MM,S65A S.N.A T0066 AA96-20109C ASSY POWER CORD -,CP2/NO(4.0),H/C300,EU, T0061 3811-001609 WIRE-PVC CU BCWA,300V,ROLL,17/0.16mm,#22 0.15 S.N.A T0268 AA39-10006X CBF-POWER CORD -,-,KKP419C,3P,-,-,BLK,-, T0010 AA61-20284A HOLDER P-CORD,PP,-,-,-,BLK,VO,KE-002 S.N.A T0527 AA65-30018A CLAMPER CORE-WIRE DONG-A,NYLON-66,-,-,-, S.N.A Samsung Electronics 5-10...
  • Page 55 MEMO 5-11 Samsung Electronics...

  • Page 56: Wiring Diagram

    Wiring Diagram 6. Wiring Diagram 6-1 Overall Wiring Samsung Electronics...
  • Page 57 Wiring Diagram ※ The code number of cable(Lead-connector) can be changed, see “5. Exploded View & Part List.” ①CRT Board↔Main Board ② Power Code ③ Speaker Wire Code AA39-20620B AA39-10006A AA96-05363A Photo Samsung Electronics...

  • Page 58: Pin Connection

    Wiring Diagram 6-2 Pin Connection MAIN CN501A CN602 TO CRT TO EARPHONE 200V B+5V CN601 TO SPK CN701 TO AV TUNER CN501 TO MAIN 200V B+5V Samsung Electronics...
  • Page 59 CRT Board connection TO SPK Pin No. Pin Name Pin No. Pin Name CN501 CRT Board connection 200V Pin No. Pin Name B+5V CN701 Side-AV connection Pin No. Pin Name 200V B+5V CN602 EARPHONE connection Pin No. Pin Name Samsung Electronics...
  • Page 60 Wiring Diagram 6-2-2 Connector role Loc. No. Description CN501 Main Board and CRT Board connect CN602 Main Board and Side-AV to E-Phone connect CN701 Main Board and Side-AV connect CN601 Main Board and Speaker connect Samsung Electronics...
  • Page 61 MEMO Samsung Electronics...

  • Page 62: Schematic Diagram

    Schematic Diagram 7. Schematic Diagram 7-1 Circuit Description 7-1-1 Overall Block Description SIDE-A/V (Option) AV IN JACK KTA1505Y T444S Fly back Transformer 78R05 A+6.5V IC301 Vertical Drive A+12V IC801S W6753F A+14V IC601 LSL-OUT Sound AMP LSR-OUT Samsung Electronics...
  • Page 63 Schematic Diagram 7-1-2 Power Signal Samsung Electronics...

  • Page 64: Partial Block Diagram

    Schematic Diagram 7-1-3 Partial Block Diagram 1. Main Block Description SIDE-A/V (Option) AV IN JACK KTA1505Y T444S Fly back Transformer 78R05 A+6.5V IC301 Vertical Drive A+12V IC801S W6753F A+14V IC601 LSL-OUT Sound AMP LSR-OUT Samsung Electronics...
  • Page 65 MEMO Samsung Electronics...
  • Page 66 Schematic Diagram 7-2 Schematic Diagram 7-2-1 Main Board This Document can not be used without Samsung’s authorization. Power Video Audio Samsung Electronics...
  • Page 67 Schematic Diagram 7-2-2 Sound This Document can not be used without Samsung’s authorization. Power Video Audio Samsung Electronics...
  • Page 68 Schematic Diagram 7-2-3 Power This Document can not be used without Samsung’s authorization. Power Video Audio Samsung Electronics...
  • Page 69 Schematic Diagram 7-2-4 CRT This Document can not be used without Samsung’s authorization. Power Video Audio Samsung Electronics...

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