SAMSUNG KS3A CHASSIS CI593CN8XXEU TV SM

COLOR TELEVISION RECEIVERChassis : Model: KS3A CI593CN8XXEU CW6844N8XXEF CZ6844N8XXEH CX683CN8XXEC CZ6844N8XXEC 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. MAY. 2000 Printed in Korea 3KS3A-2801 Check the basic characteristics such as height. Samsung Electronics 4-1 . poor color purity will result. demagnetize. 4-3 High voltage Check CAUTION : There is no high voltage adjustment on this chassis. the power should be OFF for at least 10 minutes. do not allow the marker generator to distort test results. When inserting signal markers. Connect the TV only to an AC power source with voltage and frequency as specified on the backcover nameplate. Correct impedance matching is essential. The degaussing coil operates for about 1 second after the power is switched ON.bar input and normal picture level). If the set is moved or turned in a different direction. The B+ power supply should be +135 volts (with full color.Alignment and Adjustments 4. 1. 4. There should be objectionable color shading. 7. Use the specified test equipment or its equivalent. 3. 4-2 Automatic Degaussing A degaussing coil is mounted around the picture tube. Observe the picture for good black and white details. horizontal and vertical sync and focus. 5. Do not attempt to connect or disconnect any wires while the TV is turned on. 3. use an isolation transformer. If the chassis or parts of the cabinet become magnetized. use an external degaussing coil. Alignment and Adjustments 4-1 General Alignment Instructions 1. But the receiver must be properly degaussed upon installation. Usually. 2. Adjust the Brightness and contrast controls to both extremes. 8. Ensure that the high voltage does not exceed 32 KV under any conditions. Slowly move the degaussing coil around the faceplate of the picture tube and the sides and front of the receiver. Turn on the TV. Make sure that the power cord is disconnected before replacing any parts. perform the following Color purity and Convergence adjustments. If color shading persists. 6. so that external degaussing after moving the TV should be unnecessary. Slowly withdraw the coil to a distance of about 6 feet before turning power OFF. perform purity and convergence adjustments described below. Set the Brightness and Contrast controls to minimum (zero beam current). If this happens. Connect a digital voltmeter to the second anode of the picture tube. Excessive signal from a sweep generator might overload the front-end of the TV. Avoid overload. if color shading is present. 2. To protect against shock hazard. a color TV-VCR needs only slight touch-up adjustment upon installation. Set the values as below. IBRM = 245 WDRV = 55 CDL = 255 COL = 200 5. 2. Select “G2-Adjust”. Enter “Service Mode”. FBT or CRT. if necessary.Alignment and Adjustments 4-4 Dynamic Focus Adjustment 1. A dynamic focus adjustment should be done after replacing the CRT PCB. 3. Slowly turn the static focus VR counterclockwise. 7. DYNAMIC FOCUS VR V STATIC FOCUS VR H SCREEN <FBT FOCUS PACK> 4-5 SCREEN Adjustment 1. 5. Turn the dynamic focus VR fully counterclockwise (maximum). 6. Adjust until the vertical line in the middle of the screen has maximum clarity. 4. Turn the SCREEN VR until “MRCR G B” and “MRWDG” are green and those value are about 100. Repeat 4-7. Enter “ STANDARD “ in video mode. 8. Input a crosshatch pattern. 4. Input Toshiba Pattern 2. Slowly turn the dynamic focus VR (clockwise) and adjust the 3rd horizontal line for maximum clarity. Turn the static focus VR fully clockwise (maximum).(Refer to “Service Mode”) 3. (The incorrect SCREEN Voltage may result that “MRCR G B” and “MRWDG” should be red) 4-2 Samsung Electronics . all adjustment values when servicing should be readjusted. 3. . 9. . Input an 100% White pattern. 3.Use “Red Cutoff” and “Blue Cutoff” to adjust Low-Light (x : 290. Adjust CA-100 so that the final adjustment value can be fixed. 4-7 White Balance Adjustment s Equipment : Color-Analyzer (CA-100) s Input Signal : Pattern signal (Toshiba pattern) 1. (Refer to “4-8 Service Mode”) 4.buttons to change the adjustment value. Use the Volume +/. warm up the TV for at least 10 seconds. When IC902 is replaced. 2. . 4. Use the Channel Up/Down (v/w) buttons to move the cursor on the adjustment modes. all adjustment data revert to the initial values. Warm up the TV set at least for 30 minutes. 5. Samsung Electronics 4-3 .Alignment and Adjustments 4-6 E2PROM (IC902) Replacement 1. connect the AC power supply cord.3. y : 300). So. After IC902 is replaced. Input a Toshiba pattern signal.Adjust “Sub Bright” so that Y (luminance) becomes 1.Adjust “Sub Contrast” so that Y (luminance) becomes 40 ft ± 3.Use “Red Drive” and “ Blue Drive” to adjust High-Light (x : 290. 2. 7. Enter the “Service Mode”. 8. 6. Select STANDARD from the menu.3ft ± 0. Enter the “Video Adjust1”. 5. Turn the power switch ON. y : 300) . Power on the TV. In stand-by. the initial screen is as shown in the figure below. Press the remote-control keys in this sequence : .Alignment and Adjustments 4-8 Factory Adjustment 4-8-1 Service Mode 1.After the Service adjustment is completed. Do not select “Reset” in the service mode menu. FBT.When CRT. Use the Channel Up/Down buttons to move the cursor in the adjustment parameters. E PROM (sometimes MICOM) is replaced.If you have Factory remote-control PICTURE ON DISPLAY ( ) FACTORY 2. the adjustment values should be controlled. (After above procedure is done. CRT PCB. Note : . If check sum value is changed.If you do not have Factory remote-control PICTURE OFF DISPLAY ( ) MENU MUTE PICTURE ON . * These hexa * depends on digits are check sum value which the MICOM version. To enter the “Service Mode”. power is on initially and the “Plug and Play” will be operated. 3. After the Service Mode is entered.) 2 4-4 Samsung Electronics . . the value of 2 E PROM Data newly initialed. Alignment and Adjustments 4-8-2 Deflection (Memory Data) 4-8-2(A) GEOMETRIC ADJUSTMENT VALUE Fixed Value No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 OSD V Shift V Amp V Slope V SC H EW H Trapizium H Parabola H Symmetry H Corner H Shift 4:3-Zoom Para 4:3-16:9 Para Wide-4:3 Para Wide-Zoom Para TTX Position D-TTX Posi Range 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 -20 ~ 20 -20 ~ 20 -20 ~ 20 -20 ~ 20 Initial Value 100 120 124 122 200 80 120 140 150 140 -7 3 0 0 0 0 Function Adjust Vertical Picture Position Adjust Vertical Picture Size Adjust Vertical Slope Correction Adjust Vertical S-Correction Adjust Horizontal Picture Size Adjust Horizontal Trapeziod Adjust Horizontal Parabola Wave Adjust Horizontal Symmetry Adjust Horizontal Corner Adjust Horizontal Position Adjust Horizontal Parabola in Zoom Mode Adjust Horizontal Parabola in 16:9 Mode Adjust Horizontal Parabola in 4:3 Mode Adjust Horizontal Parabola in Zoom Mode Adjust Horizontal OSD/TTX Position Adjust Horizontal OSD/TTX Position Wide CRT 4:3 CRT Not to be adjusted Not to be adjusted Remark Samsung Electronics 4-5 . Alignment and Adjustments 4-8-2(B) SCREEN CHANGE (I2C BUS GEOMETRIC ADJUSTMENT) 1 V Shift 6 V Amp 2 V Slope 7 V SC 3 H EW 8 H Trapizium 4 H Parabola 9 H Symmetry 5 H Corner 10 H Shift 4-6 Samsung Electronics . 2 BG 3 DK 6 I 6 L 8 Def.6mA BCL THESHOLD BCL GAIN MAX WDRGB 50 IRE Table 1.8mA 1. YC Delay Adjustment Table YC Delay Value PAL Def. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 OSD Red Cufoff Green Cutoff Blue Cutoff Red Drive Green Drive Blue Drive Sub Bright Sub Contrast Sub Color Sub Tint BCL Threshold BCL Gain BCL Time TTX Contrast YC Delay Range Initial Value 0 ~255 0 ~255 0 ~255 0 ~255 0 ~255 0 ~255 0 ~ 200 0 ~ 13 0 ~ 27 0 ~ 100 0 ~ 255 0 ~ 15 0 ~ 15 0 ~ 255 0~8 127 127 127 127 127 127 100 7 20 80 40 7 4 90 * Adjust OSD/TTX Contrast Refer to Table 1 Adjust Beam Control Limit Refer to Note 1 Not to be adjusted Adjust Red Cutoff Level Adjust Green Cutoff Level Adjust Blue Cutoff Level Adjust Red Output Gain Adjust Green Output Gain Adjust Blue Output Gain Adjust Brightness Level Adjust Contrast Level Adjust Color Level Adjust Tint Low Light High Light High Light Low Light Function Remark Note 1. 3 Samsung Electronics 4-7 .Alignment and Adjustments 4-8-2(C) VIDEO ADJUST 1 Fixed Value No. Beam Control Limit Characteristic beam MIN 1. 4 BG 8 SECAM DK 8 I 8 L 5 NTSC Def. ... 1 2 3 4 5 6 7 8 9 10 11 OSD B stretch-BTHR B stretch-BTLT B stretch-BAM Coring✐ 1 Range 0 ~ 55 0 ~ 15 0 ~ 31 10 ~ 31 0 ~ 10 0 ~ 20 0 ~ 255 0 ~ 255 0 ~ 15 Initial Value 0 0 0 31 3 8 92 26 0 90 108 Black Stretch Threshold Function Remark Black Stretch Tilt Position Black Stretch Amount Luma Peaking Filter Coring Noise Reduction off value Adjust “Melody” Volumn Level OSD/TTX RGB Bright OSD/TTX RGB Contrast Electronic High Tension Response Time Electronic High Tension Coefficient Vertical Set-Up Time NR off Value Melody Volumn RGB Bright RGB Contrast EHT Time EHT Compensation 0 ~ 255 2 VSU✐ 96 ~ 111 ✐1 Coring : The Value of Center Frequency for the active bandwidth.15] 400 300 200 0 2 4 6 8 10 12 14 Soft Limit Slope B range=256.511] Li 1023 4-8 Samsung Electronics .. 4-8-2(E) VIDEO 3 ADJUST No..511] 0 0 100 200 300 400 500 600 700 800 900 tilt 2 [0. 1 2 3 4 5 6 7 OSD Peak Threshold Soft Limit Slope B Hard Limit Peak Video Ref Peak Video Gain Range Initial Value 0 ~ 255 0 ~ 15 0 ~ 255 0~4 0~5 185 4 160 1 3 20 20 Function White Peak Level Threshold Refer to Picture Below White Peak Level Threshold Reference White Peak Level Threshold Gain Auto Color Control Refer to Note Below Remark ACC-REF(PAL/NTSC) 0 ~ 20 ACCR(SECAM) 0 ~ 39 Note 2. but “Peak Limit” is that with feed-back for white peak level 100 tilt 1 [0.15] Hard limiter 0 2 4 6 8 10 12 14 Slope 2 [0.Alignment and Adjustments 4-8-2(D) VIDEO 2 ADJUST No.. ✐ 2 VSU : Vertical Sync Delay Time for OSD/TTX jutter-free.511 ✐ “Soft Limit” is that Limitting the peak white without feed-back.. or OSD bounding... Soft Limit & Hard Limit Characteristics Output 511 Part 1 Part 2 Slope 1 [0.. 1 2 3 4 5 6 7 8 9 10 11 System OSD Function Remark AV by CH key Sound CRT AV Mode Speaker X-Ray TTX To P Tilt Control Auto FM Txt Language A2/NICAM Depending on the sound IC (IC601) 4:3 2Scart Dome Spk Off Off On On West Europe Depending on the Model Depending on CRT size Depending on External Jack Select OSD/TTX Language Samsung Electronics 4-9 .Alignment and Adjustments 4-8-2(E) VIDEO 3 ADJUST Initial Value CW Off Select Video System Set the model without AV Key in front panel to ”on” No. 3V CVBS Input VDD 2. Power Sound Mute N.3V GND VDD 2.5V GND X-TAL Out X-TAL In MICOM Reset N.C.C.C.5V CORE OSD-B OSD-G OSD-R VDD 2. N. N. Y VDD 3. PX.5V GND AFT Scart1 Ident Scart2 Ident Key 1 H-Sync V-Sync Key 3 Key 2 X-Ray Protect IR Input Stand-By LED Time LED 1 2 3 4 5 6 7 8 9 10 11 12 13 14 I/O I/O IO I/O I/O I/O I/O I/O PWM I/O I/O 52 51 50 49 48 47 46 45 15 ADC 16 ADC 17 ADC 18 ADC 19 20 21 I/O 22 I/O 23 I/O 24 I/O 25 I/O 26 I/O S D A 5 5 5 X 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 I/O 27 Tilt N. Relay 4-10 Samsung Electronics .5V GND VDD 3. VDD 3. Y PX.C.C.C.Alignment and Adjustments 4-9 MICOM 4-9-1 Pin Layout Write Protect EEPROM SDA EEPROM SCL Bus-Stop Main SDA Main SCL Sound Reset Video Reset VDD 2.3V GND N. Alignment and Adjustments 4-9-2 Pin Assignment Specification PIN NO FUNCTION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 I/O I/O I/O I/O I/O I/O I/O I/O Vdd GND Vdd CVBS Vdd GND ADC ADC ADC ADC HS VS I/O I/O I/O I/O I/O I/O ASSIGN Write Protect ROM SDA ROM SCL Bus Stop Main SDA Main SCL Sound Reset Video Reset VDD 2.5V IN/OUT Out I/O I/O In I/O I/O Out Out ACTIVE H/L Low DESCRIPTION EEPROM Write Protection EEPROM Serial Data Line EEPROM Serial Clock Line Low Disable Micom IIC Peripheral IC Serial Data Line Low Low Peripheral IC Serial Clock Line MSP IC Initial Control VDP IC Initial Control VDD 3.3V CVBS Input VDD 2.5V In TTX CVBS Input Analog B+ Analog Ground AFT SC1-ID SC2-ID Key1 H-Sync V-Sync Key3 Key2 X-Ray IR-In STD-LED TIM-LED In In In In In In In In In In Out Out Auto Fine Tuning Control Scart1 Ident Scart2 Ident Key1 Input Horizontal Sync Input Vertical Sync Input Key3 Input Key2 Input X-Ray Protection Remocon Signal Input LED Drive Output(Red) LED Drive Output(Green) Samsung Electronics 4-11 . C.C.C. Reset X-In X-Out GND Vdd R G B COR Vdd GND Vdd I/O I/O N.C. GND Vdd N. Out VDD 2.3V PX. N.3V ASSIGN Relay IN/OUT Out ACTIVE H/L Low DESCRIPTION Activate Degausssing Coil Not Used (Programmed Gound Level) Analog Ground Not Used (Programmed Gound Level) Not Used (Programmed Gound Level) Micom Hardware Reset Crystal Oscillation Input Crystal Oscillation Output Analog Ground Analog B+ OSD/TTX Output (Red) OSD/TTX Output (Green) OSD/TTX Output (Blue) Fast Blank/Half Contrast Output 4-12 Samsung Electronics . Not Used (Programmed Gound Level) N.Y In When The Caption Function Adopted.5V Out Out Out Out Reset X-TAL In X-TAL Out In In Out Low 6MHz 6MHz VDD 3.5V OSD-R OSD-G OSD-B CORE VDD 2. I/O Tilt Out PWM S-Mute Power Out Out High Low Sound Amp Mute Picture On/Off Control Not Used (Programmed Gound Level) Tilt Control Output VDD 3.Alignment and Adjustments 4-9-2 Pin Assignment Specification (Continued) PIN NO FUNCTION 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 I/O N. Used.C. I/O I/O N.C.Y PX. Schematic Diagrams 10-1 MAIN 1 TP07 TP01 TP10 TP08 TP02 TP09 TP03 TP01 TP09 TP06 TP10 TP04 TP03 TP08 TP05 TP05 TP04 TP02 TP06 TP07 : Power Line : Signal Line Samsung Electronics 10-1 .Schematic Diagrams 10. Schematic Diagrams 10-2 MAIN 2 TP11 TP12 TP13 TP12 TP13 TP14 TP11 TP25 TP15 TP14 TP25 TP15 10-2 : Power Line : Signal Line Samsung Electronics . Schematic Diagrams 10-3 MAIN3 TP22 TP16 TP23 TP23 TP17 TP24 TP18 TP17 TP16 TP18 TP22 TP19 TP21 TP24 TP19 TP20 TP20 TP21 : Power Line : Signal Line Samsung Electronics 10-3 . Schematic Diagrams 10-4 MAIN 4 TP32 TP26 TP33 TP27 TP26 TP33 TP27 TP35 TP34 TP28 TP35 TP29 TP28 TP32 TP31 TP34 TP30 TP29 TP30 TP31 : Power Line : Signal Line 10-4 Samsung Electronics . Schematic Diagrams 10-5 DOUBLE FOCUS. CONTROL DOUBLE FOCUS CONTROL : Power Line Si l Li Samsung Electronics 10-5 . SIDE AV CRT SIDE AV : Power Line : Signal Line 10-6 Samsung Electronics .Schematic Diagrams 10-6 CRT.