COLOR TELEVISION RECEIVER Chassis : Model : COLOR TELEVISION RECEIVER K57A(N) CL25M6WKX/XAX CL25M6WKX/XAP CL21M6WKX/STR CL21M6WKX/XAP CL21M6WKX/XAO CL21M6WKX/RCL 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.
ELECTRONICS © Samsung Electronics Co., Ltd. JAN.
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: MODEL TXM2792FX SYSTEM NTSC ONLY System Band VHF 2 - 13 UHF 14 - 69 CABLE 1 - 125 Channels: Intermediate Frequencies (MHz) : NTSC SYSTEM NTSC IF Carrier Frequency Picture IF Carrier 45.75 Sound IF Carrier 41.25 Color Sub Carrier 42.
Specifications and IC Data 2-2 IC Line Up Table 2-1 IC Line-Up 2-2 Loc. No Specification IC201S SPM-464A IC301 LA7845 IC501 TDA6108QJF IC602 TDA7297 IC801S KA5Q1265R IC802 Description Remark TDA9592 PS/NI, SPM-464A,64P Philips VERTICAL OUTPUT Sanyo RGB DRIVE AMP Philips SOUND-AMP (15W x 2CH) Philips POWER IC (STR) FIAIR CHILD KA7632 CUSTOM REGULATOR (5V, 8V, 3.
Specifications and IC Data 2-3 Semiconductor Base Diagrams ELECTROLYTICCONDENSER IC DIODE SPM464A(Pin 64) MSP3425G(Pin 52) LM393(Pin 8) VIPER12ADIP(Pin 8) M24C08(Pin 8) 4558(Pin 8) NJM2235D(Pin 8) TRANSISTOR TRANSISTOR SAW-FILTER M3953M M9370M 11 1 KSD5703 KSA614 KSC815-Y KSA539-Y B C E E B C IC TRANSISTOR LA7845(Pin 7) TDA6108Q(Pin 9) KA7632(Pin 10) KSC2331-Y 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. 3-3 Speaker Removal 1. 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.
MEMO 3-4 Samsung Electronics
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 NO OSD 1 SCT Su b Co n t ra s t 0 ~ 23 13 ADJ 2 SBT Su b Bri g h t n e s s 0 ~ 23 9 ADJ 3 BLR Bl a c k Le v e l o f fse t R 0 ~ 63 32 ADJ 4 BLB Bl a c k Le v e l o f fse t B 0 ~ 63 32 ADJ 5 RG R ed Gain 0 ~ 63 28 ADJ 6 GG G re e n G a i n 0 ~ 63 25 FIX 7 BG Bl u e G a i n 0 ~ 63 31 ADJ 8 VSL Ve r t i ca l S lo p e 0 ~ 63 27 ADJ 9 VS Ve r t i ca l Sh i f t 0 ~ 63 31 FIX 10 VA Ve r t i ca l A
Alignment and Adjustments NO OSD F U N CT I ON 33 EPAR EW P a r a b o la 0 ~ 63 32 ADJ 34 EUCN EW Up p e r Co n e r 0 ~ 63 12 ADJ 35 ELCN EW Lo we r Co n e r 0 ~ 63 12 ADJ 36 ETRP EW T r a p e ziu m 0 ~ 63 12 ADJ 37 VZ V e r t ica l Z o o m 0 ~ 63 48 FIX 38 SVM D e la y o f RGB t o VM Ou t p u t 0 ~ 3 0 FIX 39 VMA A mp lit u d e o f SVM Ou t p u t 0 ~ 3 3 FIX 40 SSP S u b Sh a r p n e ss 0 ~ 20 5 FIX 41 PSNS I de n t if ica t io n se n s 0 ~ 1 1 FIX
Alignment and Adjustments 4-2-3 Option Bytes In the Service Mode, various can be selected via the Option Table. Example: Option Table : xx xx 4-4 OSD SETTING 1 SYSTEM CT-N EN/SP/FR 2 VIDEO MUTE OFF 3 ZOOM NOR/ZOOM - Picture Size Option 4 AUTO POWER OFF - Master S/w Option 5 AUDIO MUTE ON - Audio Mute On/ Off without signal 6 START LANG.
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 Mode Sound Mode Auto Volume Melody Surround Turbo Sound MTS Language Caption Timer Dynamic Custom Off On Off Off Stereo English Off Off 4-3 Other Adjustments 4-3-1 General 1. Usually, a color TV needs only slight touchup adjustment upon installation. Check the basic characteristics such as height, horizontal and vertical sync and focus. 2.
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 +130 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 33 (Factory Mode). 4-3-10 Sub-Color Adjustment Set NSR data to 10 (Factory Mode). 5 5 4-3-11 Geometry Adjustment Fig. 4-9 SC →VS→VA→VSL→HS 6. Adjust EWID (EW Width) so that the left and right margins of the picture are 5. 1. Input a lion head pattern. 2. Set the SC (S-Correction) as 29 and VS(Vertical Shift) 31 so that the lion head circle becomes oval. 7. Input a cross-hatch pattern. 3.
Alignment and Adjustments 8.
Alignment and Adjustments Samsung Electronics 4-11
MEMO 4-12 Samsung Electronics
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 Abnormal Check IC301 +- B Volt IC301 Check/Replace Abnormal Abnormal Nornal Nornal Check the resistance of R519 Check/Replace R418,R522,R523 Nornal Check CRT and FBT Abnormal Check/Replace IC201S Check IC201S Pin 51,52,53 (R.G.
Troubleshooting 5-3 No Sound (Video OK) Checkthe signal Output from CN602 CN603 Abnormal Normal Check Speaker and Wire Normal Check IC602 Pin4,12 Abnormal Normal Check IC602 B+ Abnormal Check IC101,TUNER Abnormal Check IC601 Pin47(SIF) Normal Check IC601 B+ Normal Check B+ Line 5V-B, 8V-B Samsung Electronics Abnormal Check FD801S D805 Normal Replace IC602 Abnormal Replace FD801S,D805 See No Power Check/Replace IC601 5-3
Troubleshooting 5-4 Horizontal Lines Appear or Screen Check IC301 B+ 16V-C,-13.
Exploded View & Parts List 6. Exploded View & Parts List 6-1 CL25M6WKX/XAX You can search for the updated part code through ITSELF web site. URL : http://itself.sec.samsung.co.
Exploded View & Parts List 6-2 CL25M6WKX/XAP You can search for the updated part code through ITSELF web site. URL : http://itself.sec.samsung.co.
Exploded View & Parts List 6-3 CL21M6WKX/STR You can search for the updated part code through ITSELF web site. URL : http://itself.sec.samsung.co.
Exploded View & Parts List 6-4 CL21M6WKX/XAP You can search for the updated part code through ITSELF web site. URL : http://itself.sec.samsung.co.
Exploded View & Parts List 6-5 CL21M6WKX/RCL You can search for the updated part code through ITSELF web site. URL : http://itself.sec.samsung.co.
Exploded View & Parts List 6-6 CL21M6WKX/XAO You can search for the updated part code through ITSELF web site. URL : http://itself.sec.samsung.co.
Electrical Parts List 7. Electrical Parts List 7-1 CL25M6WKX/XAX Loc. No. Code No.
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Electrical Parts List Loc. No. Code No. Description ; Specification Remark Loc. No. Code No. Description ; Specification Remark ASSY LABEL 1 A/LABE AA92-02726A ASSY LABEL;CL25M6W7X/XAX 2 INLAYB AA64-00892G INLAY BACK;D2,D3,RCA9P+S-VHS+DVD,PS SHEE 2 IN/AV AA64-01506C INLAY-AV;29K3,PVC-SHEET,T0.
Electrical Parts List 7-2 CL25M6WKX/XAP Loc. No. Code No.
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Electrical Parts List Loc. No. Code No. Description ; Specification Remark Loc. No. Code No. Description ; Specification Remark ASSY BOX 1 A/BOX AA92-07432A ASSY BOX;25M6,K57A,25 2 L/BOX 2 PCK AA68-01542A LABEL;(UNIBOX),PAPER WHT ALLMD AA69-02037A PACKING CASE;25M6,K57A,CB D-3 AB,YEL,A1, ASSY P/MATERIAL 1 A/PACK AA92-02775A ASSY P/MATERIAL;CL25M6W7X/XAX 2 2 2 2 BXTAPE STAPLE PE-BAG C/SET 0203-001295 AA60-40006A AA69-01209A AA69-01264B TAPE-OPP MASKING;1242,T0.06,W100,L91.
Electrical Parts List 7-3 CL21M6WKX/STR Loc. No. Code No.
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Electrical Parts List Loc. No. 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 EL404 EL405 EL406 EL407 EL501 EL502 EL805 EL806 EL807 EL808 GT102 GT404 GT501 GT502 GT503 GT801 GT802 GT803 GT804 GT805 GT806 GT301 GT302 GT401 GT402 L/LINE R256 C709 R292 Code No.
Electrical Parts List Loc. No. Code No. Description ; Specification Remark Loc. No. Code No. Description ; Specification Remark ASSY ACCESSORY 1 A/ACCS AA92-07406A ASSY ACCESSORY;CL21M6WKX/STR;K57A 2 2 2 2 2 2 2 2 2 2 AC-TAP RMT I/B2 I/B PLUG W/CARD BAG-PE BATT T/MAT A/ROD 0203-001279 AA59-10113H AA68-02647A AA68-02648A 3721-000136 AA68-40004B AA69-01195A 4301-000120 AA26-90001F AA42-00005A Samsung Electronics TAPE-OPP MASKING;#232,T0.
Electrical Parts List 7-4 CL21M6WKX/XAP Loc. No. Code No.
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Electrical Parts List Loc. No. 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 EL404 EL405 EL406 EL407 EL501 EL502 EL805 EL806 EL807 EL808 GT102 GT404 GT501 GT502 GT503 GT801 GT802 GT803 GT804 GT805 GT806 GT301 GT302 GT401 GT402 L/LINE R256 C709 R292 Code No.
Electrical Parts List Loc. No. Code No. Description ; Specification Remark Loc. No. Code No. Description ; Specification Remark ASSY ACCESSORY 1 A/ACCS AA92-07405A ASSY ACCESSORY;CL21M6WKX/XAP;K57A 2 2 2 2 2 2 2 2 2 2 7-28 AC-TAP RMT I/B2 I/B PLUG W/CARD BAG-PE BATT T/MAT A/ROD 0203-001279 AA59-10113H AA68-02647A AA68-02648A 3721-000136 AA68-00987A AA69-01195A 4301-000120 AA26-90001F AA42-00004A TAPE-OPP MASKING;#232,T0.
Electrical Parts List 7-5 CL21M6WKX/XAO Loc. No. Code No.
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Electrical Parts List Loc. No. 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 EL404 EL405 EL406 EL407 EL501 EL502 EL805 EL806 EL807 EL808 GT102 GT404 GT501 GT502 GT503 GT801 GT802 GT803 GT804 GT805 GT806 GT301 GT302 GT401 GT402 L/LINE R256 C709 R292 Code No.
Electrical Parts List Loc. No. Code No. Description ; Specification Remark Loc. No. Code No. Description ; Specification Remark ASSY ACCESSORY 1 A/ACCS AA92-07405A ASSY ACCESSORY;CL21M6WKX/XAP;K57A 2 2 2 2 2 2 2 2 2 2 0203-001279 AA59-10113H AA68-02647A AA68-02648A 3721-000136 AA68-00987A AA69-01195A 4301-000120 AA26-90001F AA42-00004A AC-TAP RMT I/B2 I/B PLUG W/CARD BAG-PE BATT T/MAT A/ROD Samsung Electronics TAPE-OPP MASKING;#232,T0.
Electrical Parts List 7-6 CL21M6WKX/RCL Loc. No. Code No.
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Electrical Parts List Loc. No. 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 EL402 EL403 EL404 EL405 EL406 EL407 EL501 EL502 EL805 EL806 EL807 EL808 GT102 GT404 GT501 GT502 GT503 GT801 GT802 GT803 GT804 GT805 GT806 GT301 GT302 GT401 GT402 L/LINE R256 C709 R292 Code No.
Electrical Parts List Loc. No. Code No. Description ; Specification Remark Loc. No. Code No. Description ; Specification Remark ASSY ACCESSORY 1 A/ACCS AA92-07401A ASSY ACCESSORY;CL21M6WKX/RCL;K57A 2 2 2 2 2 2 2 7-42 AC-TAP RMT I/B PLUG C/POIN C/REG BAG-PE 0203-001279 AA59-00141F AA68-02619A 3721-000136 AA68-02408A AA68-02409A AA69-01195A TAPE-OPP MASKING;#232,T0.14,W15,L50000,Y REMOCON;,TM58,SSM174PT,41,SS,L/GRAY,MBR, MANUAL USERS;,B5,SPA,W/P100(G),K57A PLUG-CONVERSION;15A300VPI4.
Block Diagram 8. Block Diagram 8-1 K57A SOUND AMP SPEAKER ( TDA7297S 15W2CH ) TUNER VI F SAW SI F SAW SI F S I GNAL 8 V 5 V 3.
Wiring Diagram 9. Wiring Diagram 9-1 K57A POWER CORD CN902 CN901 4 3 2 1 3 2 1 CRT PCB KZ GND KI GND TI 5V IR 1 2 3 4 5 6 7 8 9 CN501 1 2 3 4 5 6 CN502 B-13.5V B+16.5V HEATER GND N.
MEMO 9-2
Schematic Diagrams 10.
Schematic Diagrams 10-2 MAIN(2/3) TP01 TP02 TP03 TP04 TP05 TP06 TP07 TP08 TP10 TP12 TP05 TP12 TP06 TP02 TP03 TP04 TP7 TP10 TP01 TP08 10-2 Samsung Electronics
Schematic Diagrams 10-3 MAIN(3/3) TP24 TP24 Samsung Electronics 10-3
Schematic Diagrams 10-4 CRT 10-4 Samsung Electronics
