COLOR TELEVISION RECEIVER Chassis : Model : COLOR TELEVISION RECEIVER KS1B(P) CZ21C71NSDXXEC CZ21K22TSDXXEH CONTENTS 1. Precautions 2. Specifications and IC Data 3. Disassembly and Reassembly 4. Alignment and Adjustment 5. Troubleshooting 6. Exploded View and Parts List 7. Electrical Parts List 8. Block Diagram 9. Wiring Diagram 10.
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 protective shields. 2. When reinstalling the chassis and its assemblies, be sure to restore all protective devices, including: nonmetallic control knobs and compartment covers. 3.
Precautions 1-1 Safety Precautions (Continued) 9. High voltage is maintained within specified limits by close-tolerance, safety-related components and adjustments. If the high voltage exceeds the specified limits, check each of the special components. 10. Design Alteration Warning: Never alter or add to the mechanical or electrical design of this unit. Example: Do not add auxiliary audio or video connectors. Such alterations might create a safety hazard.
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. Servicing precautions are printed on the cabinet. Follow them. 2.
Precautions 1-3 Precautions for Electrostatically Sensitive Devices (ESDs) 1. Some semiconductor (“solid state”) devices are easily damaged by static electricity. Such components are called Electrostatically Sensitive Devices (ESDs); examples include integrated circuits and some field-effect transistors. The following techniques will reduce the occurrence of component damage caused by static electricity. 2.
Specifications and IC Data 2. Specifications and IC Data 2-1 Specifications Television System: Channels: Intermediate Frequencies (MHz) : Picture Tube: SYSTEM MODEL CI PAL-I (UHF) CII PAL-I (VHF/UHF) CX PAL-B/G, SECAM-B/G CK PAL-B/G, D/K, SECAM-B/G, D/K CW PAL-B/G, D/K, SECAM-B/G, D/K, NT 4.43 CS PAL-B/G, D/K, SECAM-B/G, D/K, NT4.43, NT3.
Specifications and IC Data 2-2 IC Line Up Table 2-1 IC Line-Up Loc.
Specifications and IC Data 2-3 Semiconductor Base Diagrams ELECTROLYTICCONDENSER IC DIODE SPM-802ERN(Pin 64) SPM-802ER(Pin 64) X24CO8P(Pin 8) KS24C080(Pin 8) U4468B(Pin 16) TRANSISTOR TRANSISTOR IC SAW-FILTER G3956M K9260M 11 1 2SD1651 2SD1650 2SD2499 KSA614 KSD5703Y B C E KSC815-Y KSA539-Y BC548 KTC9014 UPC574J or KA33V E B C IC TRANSISTOR LA7845 TDA6107Q KA7632 KSR1012 KSR1010 KSR2010 KTD863-Y KSC2331-Y KTC3197 E C B Fig.
MEMO 2-4
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).
Disassembly and reassembly 3-2 Main Board Removal 1. Separate the socket board from the CRT neck. 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.
Disassembly and reassembly 3-3 Speaker Removal 1. Remove the speaker by pressing the tension rib. 1. Remove the screws. 2. Remove the speaker by pressing the tension rib.
Disassembly and reassembly 3-4 CRT Removal 1. Spread a soft mat on the floor. Place the TV set face down. 2. Remove the 4 nuts mounting the CRT to the front cabinet. Lift the CRT. 3. Caution: Because of the high vacuum and large surface area of the picture tube, be careful while handling it: (1) 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.
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 Mode. 1. Make the following adjustments AFTER setting up after setting up purity and convergence : 2. The Factory Mode adjustments are necessary when either the EEPROM (IC202) or the CRT is replaced. 3. Do not tamper with the “Adjustment” screen of the Factory Mode menu. This screen is intended only for factory use.
Alignment and Adjustments 4-2-2 Main Adjustment Parameter OSD F U N CT I ON R AN GE I N I T I A L D AT A SCT Su b Co n t ra s t 0 ~ 23 13 SBT Su b Bri g h t n e s s 0 ~ 23 9 BLR Bl a c k Le v e l o f fse t Blu e 0 ~ 15 9 BLB Bl a c k Le v e l o f fse t Red 0 ~ 15 7 RG R ed Gain 0 ~ 63 32 GG G re e n G a i n 0 ~ 63 25(Fix) BG Bl u e G a i n 0 ~ 63 31 VSL Ve r t i ca l S lo p e 0 ~ 63 19 VS Ve r t i ca l Sh i f t 0 ~ 63 38 VA Ve r t i ca l A m p l i tu d e 0 ~ 63 4
Alignment and Adjustments 4-2-3 Option Bytes In the Service Mode, various can be selected via the Option Table.
Alignment and Adjustments 4-2-4 RESET The Reset Mode is used during factory inspection. Function Reset: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Picture Auto Volume Color System Sound System Blue Screen Low Noise AMP Volume CH. Skip CH. Lock Timer Custom Off Auto (option) D/K (option) Off Off (option) 10 Erased Off Off 4-3 Other Adjustments 4-3-1 General 1. Usually, a color TV needs only slight touchup adjustment upon installation.
Alignment and Adjustments 4-3-3 High Voltage Check 4-3-6 Purity Adjustment CAUTION: There is no high voltage adjustment on this chassis. The B+ power supply must be set to +125 volts (Full color bar input and normal picture level). 1. Warm up the receiver for at least 20 minutes. 1. Connect a digital voltmeter to the second anode of the picture tube. 2. Plug in the CRT deflection yoke and tighten the clamp screw. 3. Plug the convergence yoke into the CRT and set in as shown in Fig. 4-2. 2.
Alignment and Adjustments 4 Pole Magnet 2 Pole Magnet 6 Pole Magnet 2 POLE PURITY Clamper Screw ADJUST THE ANGLE (VERTICAL LINES) YOKE CLAMP SCREW 6 POLE CONVERGENCE 4 POLE CONVERGENCE Fig. 4-2 Convergence Magnet Assembly Vertical Green Belt 31m/m Fig. 4-3 Center Convergence Adjustment 4-3-7 White Balance Adjustment (a) Set up 1 1. Warm up the TV for at least 30 minutes in the Aging Mode (OSD White). This mode is displayed by entering the following sequence: DISPLAY →FACTORY → FACTORY 2.
Alignment and Adjustments 4-3-8 Center Convergence Adjustment 1. Warm up the receiver for at least 20 minutes. 2. Adjust the two tabs of the 4 pole magnets to change the angle between them. Superimpose the red and blue vertical lines in the center area of the screen. 3. Adjust the Brightness and Contrast controls for a well defined picture. 4. Adjust the two-tab pairs of the 4 pole magnets, and change the angle between them. Superimpose the red and the blue vertical lines in the center area of the screen.
Alignment and Adjustments 4-3-9 RF AGC Adjustment Set the AGC data to 23 (Factory Mode). 4-3-10 Sub-Color Adjustment Set PSR data to 2 (Factory Mode). NSR 5 5 5 4-3-11 Geometry Adjustment SC →VS→VSL→HS Fig. 4-9 1. Input a lion head pattern (in the PAL channel). 2. Set the SC (S-Correction) as follows : 10(21” Flat) ,9 (21”), 9 (20”), 0 (14”) and VA 40 so that the lion head circle becomes oval. 6. Adjust HS (using the width coil) so that the left and right margins of the picture are 5. 3.
Troubleshooting 5. Troubleshooting 5-1 No Power Counect the Power code Check the Power LED Check the 3.3V-A,8V-A Line of IC201S LED On LED Off Normal Check the X-tal,SDA,SCL port of IC201S Normal Abnormal Check the 12.
Troubleshooting 5-2 No Video (Sound OK) Check RK,GK,BK Signal Abnormal Check R,G,B Signal into CRT PCB Nornal Check IC501 B+(180V-B) Nornal Nornal Abnormal Check the Voltage of heater Re-Adjust Screen Voltage Abnormal Abnormal Check the resistance of R512 Nornal Abnormal Check/Replace R418,R513,D503 Nornal Replace R512 Check CRT and FBT Abnormal Check/Replace IC201S Abnormal Check IC201S Pin 51,52,53 (R.G.
Troubleshooting 5-3 No Sound (Video OK) Checkthe signal Output from CN602 CN603 Normal Abnormal Check Speaker and Wire Normal Check IC602 Pin8,9 Abnormal * STEREO Abnormal Check IC101,TUNER Abnormal * MONO Check IC601 Pin47(SIF) Normal Check IC601 B+ Normal Check B+ Line 5V-B, 8V-B Normal Check IC602 B+ Check/Replace IC601 Check IC201S Pin32(SIF) Normal Check/Replace IC201S Abnormal Check IC101,TUNER Abnormal Check R610,R611 Normal Check FD801S D805 Normal Replace IC602 Abnormal
Troubleshooting 5-4 Horizontal Lines Appear or Screen Abnormal Check IC301 B+ 16V-C,-13.
Exploded View & Parts List 6. Exploded View & Parts List 6-1 CS21C71NSDXXEC Samsung Electronics No Code No Description Specification Q’ty S.N.A 1 HA91-04035B ASSY CABINET FRONT;,21C7,KS1B,VL-1823,SV 1 1* AA64-02379E CABINET-FRONT;21C7,VL-1823,SV-012P-II,GR 1 1-1 HA64-27006A DOOR-CONTROL;;21C7,HIPS,HB,SV-012P-II 1 1-2 AA64-01059B INLAY CONTROL;21C7,PS SHEET,T0.
Exploded View & Parts List 6-2 CS21K22TSDXXEH 6-2 No Code No Description Specification Q’ty S.N.
Electrical Parts List 7. Electrical Parts List 7-1 CS21C71NSDXXEC Level Loc. No. Code No.
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Electrical Parts List Level Loc. No. Code No. 2 3 3 3 3 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 R701 R702 C701 C702 C703 C704 C705 C706 L701 L702 L703 L704 PCB L707 L708 AA98-00248A 0202-000008 0202-000187 0204-001024 0204-000442 2001-000028 2001-000028 2202-000121 2202-000121 2202-000231 2202-000231 2401-003102 2401-003102 2701-000114 2701-000114 2701-000114 2701-000114 AA41-00267B 0203-001123 2901-000297 2901-000297 Description ; Specification Remark Level Loc. No. Code No.
Electrical Parts List 7-2 CS21K22TSDXXEH Level Loc. No. Code No.
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MEMO 7-14 Samsung Electronics
Block Diagram 8.
Wiring Diagram 9. Wiring Diagram 5 4 3 2 1 R- OUT G- OUT B- OUT GND IK Samsung Electronics 1 2 3 4 VIDEO OUT GND VIDEO IN GND SOUND L OUT SOUND R OUT SOUND L IN SOUND R IN CN501B 8 7 6 5 4 3 2 1 POWER CORD CN701 CN501A CN603 L + OUT L - OUT GND R - OUT R + OUT 1 2 3 4 5 CRT PCB 9-1 KS1B 180V N.
MEMO 9-2
Schematic Diagrams 10.
Schematic Diagrams 10-2 MAIN(2/3) TP01 TP02 TP06 TP01 TP05 TP02 TP02 TP01 TP01 TP04 TP03 TP02 : Power Line : Signal Line 10-2 Samsung Electronics
Schematic Diagrams 10-3 MAIN(3/3) TP01 TP02 TP02 TP01 : Power Line : Signal Line Samsung Electronics 10-3
Schematic Diagrams 10-4 POWER 10-4 Samsung Electronics
ELECTRONICS © Samsung Electronics Co., Ltd. Oct.
