Samsung chassis KS3A free download

File name CW28C73NS_1.pdf

COLOR TELEVISION RECEIVER Chassis : Model : KS3A(P) (REV. 2) CW21443NS8XXEU CW21C33NS8XXEU CW21C73NS8XXEC CW25C33NS8XXEU CW28C33NS8XXEG CW28C33NS8XXEU CW28C73VS8XXEC CW21C33NS8XXEC CW21C33WS8XXEG CW25C33NS8XXEC CW25C33WS8XXEG CW28C33NS8XXEC CW28C73NS8XXEC CW28C73WS8XXEG COLOR TELEVISION RECEIVER CONTENTS 1. Precautions 2. Reference Information 3. Specifications 4. Alignment and Adjustments 5. Troubleshooting 6. Exploded Views and Parts List 7. Electrical Parts List 8. Block Diagrams 9. Wiring Diagram 10. Schematic Diagrams ELECTRONICS © Samsung Electronics Co., Ltd. JUN. 2001 Printed in Korea 3KS3A-SEH28C7-04

File name CW28C73NS_2.pdf

Reference Information 2. Reference Information 2-1 Tables of Abbreviations and Acronyms Table 2-1 Abbreviations A Ah Е dB dBm °C °F °K F G GHz g H Hz h ips kWh kg kHz k km km/h kV kVA kW I MHz Ampere Ampere-hour Angstrom Decibel Decibel Referenced to One Milliwatt Degree Celsius Degree Fahrenheit degree Kelvin Farad Gauss Gigahertz Gram Henry Hertz Hour Inches Per Second Kilowatt-hour Kilogram Kilohertz Kilohm Kilometer Kilometer Per Hour Kilovolt Kilovolt-ampere Kilowatt Liter Megahertz MV MW M m µA µF µH µm µs µW mA mg mH mI mm ms mV nF pF Ib rpm rps s V VA W Wh Megavolt Megawatt Megohm Meter Microampere Microfarad Microhenry Micrometer Microsecond Microwatt Milliampere Milligram Millihenry Milliliter Millimeter Millisecond Millivolt Nanofarad Ohm Picofarad Pound Revolutions Per Minute Revolutions Per Second Second (Time) Volt Volt-ampere Watt Watt-hour Samsung Electronics 2-1 Reference Information Table 2-2 Table of Acronyms ABL AC ACC AF AFC AFT AGC AM ANSI APC APC A/V AVC BAL BPF B-Y CATV CB CCD CCTV Ch CRT CW DC DVM EIA ESD ESD FBP FBT FF FM FS GND G-Y H HF HI-FI IC IC IF Automatic Brightness Limiter Alternating Current Automatic Chroma Control Audio Frequency Automatic Frequency Control Automatic Fine Tuning Automatic Gain Control Amplitude Modulation American National Standards Institute Automatic Phase Control Automatic Picture Control Audio-Video Automatic Volume Control Balance Bandpass Filter Blue-Y Community Antenna Television (Cable TV) Citizens Band Charge Coupled Device Closed Circuit Television Channel Cathode Ray Tube Continuous Wave Direct Current Digital Volt Meter Electronics Industries Association Electrostatic Discharge Electrostatically Sensitive Device Feedback Pulse Flyback Transformer Flip-Flop Frequency Modulation Fail Safe Ground Green-Y High High-Frequency High Fidelity Inductance-Capacitance Integrated Circuit Intermediate Frequency I/O L L LED LF MOSFET MTS NAB NEC NTSC OSD PCB PLL PWM QIF R RC RF R-Y SAP SAW SIF SMPS S/N SW TP TTL TV UHF UL UV VCD VCO VCXO VHF VIF VR VTR VTVM TR Input/output Left Low Light Emitting Diode Low Frequency Metal-Oxide-Semiconductor-Field-Effect-Tr Multi-channel Television Sound National Association of Broadcasters National Electric Code National Television Systems Committee On Screen Display Printed Circuit Board Phase-Locked Loop Pulse Width Modulation Quadrature Intermediate Frequency Right Resistor & Capacitor Radio Frequency Red-Y Second Audio Program Surface Acoustic Wave(Filter) Sound Intermediate Frequency Switching Mode Power Supply Signal/Noise Switch Test Point Transistor Transistor Logic Television Ultra High Frequency Underwriters Laboratories Ultraviolet Variable-Capacitance Diode Voltage Controlled Oscillator Voltage Controlled Crystal Oscillator Very High Frequency Video Intermediate Frequency Variable Resistor Video Tape Recorder Vacuum Tube Voltmeter Transistor 2-2 Samsung Electronics Reference Information 2-2 IC Line Up Table 2 - 3 IC Line - Up NO BOARD LOC

File name CW28C73NS_3.pdf

Alignment and Adjustments 4. Alignment and Adjustments 4-1 General Alignment Instructions 1. Usually, a color TV-VCR needs only slight touch-up adjustment upon installation. Check the basic characteristics such as height, horizontal and vertical sync and focus. 2. Observe the picture for good black and white details. There should be objectionable color shading; if color shading is present, demagnetize, perform purity and convergence adjustments described below. 3. Use the specified test equipment or its equivalent. 4. Correct impedance matching is essential. 8. To protect against shock hazard, use an isolation transformer. 5. Avoid overload. Excessive signal from a sweep generator might overload the front-end of the TV. When inserting signal markers, do not allow the marker generator to distort test results. 6. Connect the TV only to an AC power source with voltage and frequency as specified on the backcover nameplate. 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. 4-2 Automatic Degaussing A degaussing coil is mounted around the picture tube, so that external degaussing after moving the TV should be unnecessary. But the receiver must be properly degaussed upon installation. The degaussing coil operates for about 1 second after the power is switched ON. If the set is moved or turned in a different direction, the power should be OFF for at least 10 minutes. If the chassis or parts of the cabinet become magnetized, poor color purity will result. If this happens, use an external degaussing coil. Slowly move the degaussing coil around the faceplate of the picture tube and the sides and front of the receiver. Slowly withdraw the coil to a distance of about 6 feet before turning power OFF. If color shading persists, perform the following Color purity and Convergence adjustments. 4-3 High voltage Check CAUTION : There is no high voltage adjustment on this chassis. The B+ power supply should be +135 volts (with full color- bar input and normal picture level). 1. Connect a digital voltmeter to the second anode of the picture tube. 2. Turn on the TV. Set the Brightness and Contrast controls to minimum (zero beam current). 3. Adjust the Brightness and contrast controls to both extremes. Ensure that the high voltage does not exceed 32 KV under any conditions. Samsung Electronics 4-1 Alignment and Adjustments 4-4 Dynamic Focus Adjustment 1. A dynamic focus adjustment should be done after replacing the CRT PCB, FBT or CRT. 2. Input a crosshatch pattern. 3. Enter " STANDARD " in video mode. 4. Turn the Dynamic focus VR fully clockwise (maximum).( ) 5. Turn the Static focus VR fully counterclockwise (maximum).( ) 6. Slowly turn the static focus VR counterclockwise. Adjust until the vertical line in the middle of the screen has maximum clarity.( ) 7. Slowly turn the dynamic focus VR (clockwise) and adjust the 3rd horizontal line for maximum clarity.

File name CW28C73NS_4.pdf

Plug in Power Cord Samsung Electronics ON Check LED lamp OFF Normal Normal Check and Replace the MICOM Normal Check and Replace IC903 Check IC901 MICOM Input Voltage Abnormal Normal Abnormal Check the MICOM Power #59 With Remote Controller Replace the MICOM Abnormal Replace Q908 Normal Normal Check IC802, IC803 Replace IC802, IC803 Normal Check IC201S VDP H-OUT #50 Abnormal Replace IC201S Normal Check Q401 H-TR Replace Q401 Normal Check 135V Line Check PC801S, IC801S Normal Replace FBT Abnormal Abnormal Check R828 and D805 Abnormal Check IC801S and FP801S Normal Check and Replace R828 or D805 Abnormal Check IC804 Input Voltage Abnormal Normal Check and Replace IC804 Check D801 and D811 Abnormal Abnormal Replace D801 or D811 Check IC903 3.3V Regulator Input Voltage Normal Replace Q908 5-1 No Power 5. Troubleshooting Abnormal Check MICOM IIC #5, #6 Check Level Shifter Q909, Q910 Output(If 2N7000 Output has the DC Component over 0.7V, it is broken) Normal Abnormal Check MICOM IIC #2, #3 Abnormal Replace Q909, Q910 Normal Check IC902 EEPROM Replace EEPROM(IC902) Normal Check IC201S Note : When you check whether any component is normal, you must let the output pin be open in order not to be affected by the side of output. Troubleshooting 5-1 No Picture, but sound is in normal operation Normal Turn the VR of FBT, higher screen voltage and Check the Deflection is in Normal Operation (If the deflection is in operation, flyback signal is appeared) Abnormal Normal Check CRT PCB RK, BK, GK Abnormal Normal Check IC201S #31 Abnormal Check Heater Voltage Abnormal Normal Check CRT and FBT Check HIC202, HIC203, HIC204 Output Abnormal Check 8V Check IC201S #63 or #59 Normal Abnormal Normal Normal Abnormal Check DZ202 Abnormal Check CRT and FBT Normal Check IC803 Replace IC201S Check 200V, 16.5V Line Check Tuner CVBS Output Check IC301 Replace DZ202 Replace IC201S 5-2 No Picture Troubleshooting 5-2 Samsung Electronics Troubleshooting 5-3 No Sound No Sound, but Picture is in normal operation Normal Check the CN602 Connection and Signal Abnormal Check the Speaker Wire Connection Normal Check 14V Line Abnormal Check IC602 #7 (If the pin is in low state, Sound is mute) Normal Abnormal Check FA803S Check D816, Q906 Check IC601 #24, #25 Normal Replace IC602 Check IC601 Input Voltages (5V,8V) Normal Check the coils around IC601 Check IC601 Input Signal Normal Replace IC601 Check the Tuner Abnormal Abnormal Abnormal Samsung Electronics 5-3 MEMO 5-4 Samsung Electronics

File name CW28C73NS_5.pdf

Exploded View & Parts List 6. Exploded View & Parts List 6-1 CW28C73NS8X, CW28C73VS8X, CW28C73WS8X No 1 Code No HA91-20018A HA64-20018A 1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 1-11 1-12 1-13 1-14 1-15 1-16 HA64-27016A AA64-00189B AA64-00190A AA64-70117B AA61-30001A HA64-25016A AA61-60003T HA64-24016A AA64-00191A HA60-020003 HA60-020003 HA95-900026 HA60-020003 3001-001005 HA60-020003 HA61-40010A Description ; Specification Q'ty 1 1 1 1 1 1 1 1 1 1 1 1 1 1 6 2 8 1 Remark ASSY-CABINET,FRONT;28C7,D3,SILVER CABINET,FRONT;28C7,HIPS,HB,SV-012P-II, DOOR-CONTROL;28C7,HIPS,HB,SV-012P-II INLAY-CONTRTOL;28C7,S51A,PS,T0.3,BLK,-,WINDOW-RMC;-,28C7,-,PC,-,VIOLET,BADGE-BRAND;AL,SS,SILVER,L65,R2000,-,CATCH-DOOR;-,-,-,KIFUCO LA701,KNOB-POWER;28C7,HIPS,SV-012P-II,SILVER SPRING-CS;-,SUS304,0.5,OD7,H13.5,N5,-,-, KNOB-CONTROL;28C7,HIPS,HB,GRAY INDICATOR-LED;-,28C7,-,ACRYL,-,CLR,SCREW-TAPPING;RH,+,2,M4,L15,ZPC(BLK),SWRCH18 SCREW-TAPPING;RH,+,2,M4,L15,ZPC(BLK),SWRCH18 ASSY-PCB,CONTROL;28C7,KS3A SCREW-TAPPING;RH,+,2,M4,L15,ZPC(BLK),SWRCH18 SPEAKER;20W,8ohm,92dB,130Hz SCREW-TAPPING;RH,+,2,M4,L15,ZPC(BLK),SWRCH18 BOSS-WING;-,HIPS,HB,NTR,-,- 2 2-1 2-2 2-3 AA03-00276A AA65-30017A HA60-020010 3704-001105 CRT COLOR;A66EHJ13X38,450MG,1.50MH,12.00 CLAMP-D,COIL;NYLON-66,V0,NTR,DADH300,25 20 SCREW-ASSY;WC,HH,+,M5,L26.5,SWRCH18A,ZPC( SOCKET-CRT;11P,20PI,26.5PI,NI,- 1 4 4 1 3 3-1 3-2 HA64-22016A HA60-020003 AA96-20122B CABINET-BACK;28C7,HIPS,HB,GRAY SCREW-TAPPING;RH,+,2,M4,L15,ZPC(BLK),SWRCH18 ASSY-POWER,CORD;-,CP2/NO(4.0),H/C500MM,KKJ1004 1 7 1 Samsung Electronics 6-1 Exploded View & Parts List 6-2 CW21443NS8XXEU No 1 Code No HA91-20010A HA64-20010A Description ; Specification Q'ty 1 1 Remark ASSY-CABINET,FRONT;2144,D3,SILVER CABINET,FRONT;2144,HIPS,HB,SV-012P-II, CABINET-FRONT OPTION CABINET-FRONT OPTION 1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 1-11 1-12 1-13 1-14 1-15 HA64-23010A HA64-40375A HA64-40374A 3001-000280 HA60-020003 AA64-70123B HA64-25010A AA61-60005K HA95-900023 HA60-020008 BADGE-BRAND;AL,R2000,SILVER,L=50,SAMSUNG KNOB-POWER;5344,HIPS,SV-012P-II,SILVER SPRING-CS;-,SUS304,0.6,OD12.2,H13,N4,-,ASSY-PCB,A/V FRONT;KS3A SCREW-TAPTITE;RWH,+,B,M4,L12,ZPC(YEL),SW CABINET-FRONT OPTION SPEAKER;5W,16OHM,90DB,150HZ SCREW-TAPPING;RH,+,2,M4,L15,ZPC(BLK),SWRCH18 ASSY-CHASSIS OPTION ASSY-CHASSIS OPTION KNOB-CONTROL;5344C,HIPS,SV-012P-II.SILVE INDICATOR-LED;-,5344,-,ACRYL,HB,CLR,WINDOW-REMOCON;-,5344,-,PC,V0,VIOLET,- 1 1 1 1 2 2 8 1 1 1 2 2-1 2-2 2-3 AA03-00279A AA65-30107A HA60-020010 3704-001105 CRT COLOR;A51EER33X,450MG,2.17MH,21MH,2. CLAMP-D,COIL;NYLON 66,V2,NTR,-,20~22 INC SCREW-ASSY;WC,HH,+,M5,L26.5,SWRCH18A,ZPC( SOCKET-CRT;11P,20PI,26.5PI,NI,- 1 4 4 1 3 3-1 3-2 HA64-22010A HA60-020003 AA61-20284A CABINET-BACK;2144,HIPS,HB,GRAY SCREW-TAPPING;RH,+,2,M4,L15,ZPC(BLK),SWRCH18 HOLDER;-,P-CORD,PP,VO,BLK,KE-002 1 7 1 6-2 Samsung Electronics Exploded View & Parts List 6-3 CW21C73NS8XXEC No 1 Code No HA91-20007A HA64-20007A Description ; Specifi

File name CW28C73NS_6.pdf

Electrical Parts List 7. Electrical Parts List 7-1 CW21443NS8XXEU (CW28C73NS8X AND CW21443NS8X Dissimilar Parts) Loc. No. Code No. Description ; Specification Remark Loc. No. Code No. Description ; Specification Remark ASSY-PCB,MAIN(OPT) * HA94-100653 ASSY-PCB,MAIN(OPT);CW5344N-533CN,KS3A/F AA26-00046ATRANS-SWITCHING;-,-,-,AC90~260V,DC135/16 HA96-50398B ASSY-H/S;-,-,AA62-30182E,TDA7266S,1201-001308 IC-POWER AMP;7266,ZIP,15P,-,DUAL,26dB,PL AA26-30005Y TRANS-FLYBACK;-,FSV-20B001A,20',125V AA32-00001AMODULE REMOCON;-,ORC-195VF,38KHZ,940nm,M AA96-00461AASSY LED GUIDE;-,-,SL-255D,RED/GRN 2306-000188 C-FILM,MPPF;330nF,5%,400V,TP,26x19.5x11, AA27-30001B COIL-LINEARLITY;-,195uH,QIC1010,PI0.4,4. 2401-003602 C-AL;220uF,20%,160V,GP,BK,22x25mm,1 2401-000262 C-AL;100uF,20%,160V,HR,TP,16x25,7.5 3404-000244 SWITCH-TACT;15V,20mA,90-170gf,7.5x7mm,SP 2004-001889 R-METAL(S);127Kohm,1%,1/2W,AA,TP,2.5x6.5 2001-000832 R-CARBON;510OHM,5%,1/8W,AA,TP,1.8X3.2MM 2003-000390 R-METAL OXIDE(S);0.27ohm,5%,2W,AA,TP,4x1 3722-000143 JACK-PHONE;1P(VER),3.4mm,AG,BLK,NO 3722-001031 JACK-RCA;3P,3.6MM,#18,AU AA39-20069ALEAD CONNECTOR-ASSY;,5P,YBNH025-05,67096 AA41-00267B PCB-SIDE A/V;CW6844,FR-1,1L,B,1.6T,245x2 ASSY-ACCESSORY * HA94-01580DASSY-ACCESSORY;KS3A,XEU,NICAM HA68-00911AMANUAL-USERS;KS3A,W/P100(G),ENGLISH ASSY-POWER,CORD * HA96-700003 ASSY-POWER,CORD;-,EP3/YES,H/C250MM,U.K, HA39-010001 POWER-CORD;DP,CP3,-,2.4M,BLK,AC250V,10A AA61-20284AHOLDER;-,P-CORD,PP,VO,BLK,KE-002 HB61-200001 CAP-CORD;-,PP,-,RED,CI ASSY-CABINET(COM) * HA90-20010AASSY-CABINET(COM); 2144 HA60-020008 SCREW-TAPTITE;RWH,+,B,M4,L12,ZPC(YEL),SW HA64-22010ACABINET-BACK;2144,HIPS,HB,GRAY ASSY-CABINET,FRONT * HA91-20010AASSY-CABINET,FRONT;2144,D3,SILVER 3001-000280 SPEAKER;5W,16OHM,90DB,150HZ AA61-60005K SPRING-CS;-,SUS304,0.6,OD12.2,H13,N4,-,HA64-25010AKNOB-POWER;5344,HIPS,SV-012P-II,SILVER HA64-26010AKNOB-POWER;5344C,HIPS,HB,GRAY HA64-40374AWINDOW-REMOCON;-,5344,-,PC,V0,VIOLET,HA64-40375AINDICATOR-LED;-,5344,-,ACRYL,HB,CLR,AA64-70123B BADGE-BRAND;AL,R2000,SILVER,L=50,SAMSUNG AA65-30105ACLAMP-WIRE;NYLON 66,V2,NTR,15MM,ALL MODE HA64-20010ACABINET,FRONT;2144,HIPS,HB,SV-012P-II, HA64-21010ACABINET,FRONT;2144,HIPS,HB,GREY HA64-23010AKNOB-CONTROL;5344C,HIPS,SV-012P-II.SILVE HA64-24010AKNOB-CONTROL;5344,HIPS,HB,GRAY ASSY-CRT * HA94-50012AASSY-CRT;A51EER31X,+400MG,-,-,-,21 AA03-00279ACRT COLOR;A51EER33X,450MG,2.17MH,21MH,2. AA27-20003Z COIL-DEGAUSSING;-,21,13.5ohm,25T,L2380,E AA65-30107ACLAMP-D,COIL;NYLON 66,V2,NTR,-,20~22 INC ASSY-PCB,A/V FRONT * HA95-900023 ASSY-PCB,A/V FRONT;KS3A Samsung Electronics 7-1 Electrical Parts List 7-2 CW21C33NS8X,WS8X (CW28C73NS8X AND CW21C33NS8X Dissimilar Parts) Loc. No. Code No. Description ; Specification Remark Loc. No. Code No. Description ; Specification Remark CW21C33NS8XXEC;OPTION ASSY-PCB,MAIN(OPT) * HA94-100653 ASSY-PCB,MAIN(OPT);CW5344N-533CN,KS3A/F AA26-00046ATRANS-SWITCHING;-,-,-,AC90~260V,DC135/16 HA96-50398B ASSY-H/S;-,-,AA62-30182E,TDA7266S,1201-001308 IC-POWE

File name CW28C73NS_7.pdf

Schematic Diagrams 8. Block Diagrams 8-1 Power Diagram Samsung Electronics 8-1 Schematic Diagrams 8-2 Block Diagram 8-2 Samsung Electronics

File name CW28C73NS_8.pdf

Wiring Diagram 9. Wiring Diagram CONTROL PCB L+ CNY02 KEY2 KEY1 GND KEY3 CNY01 TIME STD GND 5V IR R+ S-VHS IN-OUT CN703 RGND LL+ VO SC-1 GND SY-I CN704 LR+ RTO SPEAKER SIDE AV PCB CN702 GND SC-O GND SY-O FROM MAIN SOUND AMP CN701 GD VI GD LO RO LI RI AV2 VIDEO IN-OUT CN901 KEY2 KEY1 GND KEY3 CN902 TIME STD GND 5V IR CN602 R+ R- CN302 VERT V2 V1 NC 16.5V GND CN501 B OUT G OUT R OUT SENSE 8V GND F/B TILT GND CN702 VO GD V1 GD LO RO GND MAIN PCB LL+ 600V VERT V2 V1 NC 16.5V GND CN502 -16V SVM CNH01 LI ABL +16V GND HEAT NC 200V RI DOUBLE FOCUS PCB 600V SC-I CN704 16.5VAC GND DOUBLE 16.5VAC GND DOUBLE GND SY-I GND SC-O GND SY-O B OUT CN501A G OUT R OUT SENSE 8V GND F/B TILT GND SVM -16V ABL +16V GND HEAT NC 200V CRT PCB CN502A Samsung Electronics 9-1 MEMO 9-2 Samsung Electronics