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Samsung CKB5237L Service Manual

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SERVICE

COLOR MONITOR

MENU
EXIT
COLOR MONITOR
CKB5237L
CKB7227L
-
+
Manual
CONTENTS
10. PCB Diagrams & Electrical Parts List

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Summary of Contents for Samsung CKB5237L

  • Page 1: Table Of Contents

    COLOR MONITOR CKB5237L CKB7227L SERVICE Manual COLOR MONITOR CONTENTS 1. Precautions 2. Product Specifications 3. Operating Instructions 4. Disassembly & Reassembly 5. Alignment & Adjustments 6. Troubleshooting 7. Exploded View & Parts List 8. Block Diagram 9. Wiring Diagram –...
  • Page 2 Samsung Electronics Co., Ltd. October 1997 Printed in Korea Code No.: BH68-60934A...

  • Page 3: Precautions

    9. Do not lift the CRT by the neck. 3. It is essential that service technicians have an accurate high voltage meter available at all times. Check the calibration of this meter periodically. CKB5237L/7227L...
  • Page 4 PLUG REVERSED (USING AC ADAPTER instructions are issued whenever appropriate. PLUG AS REQUIRED) Components identified by on schematics and EARTH GROUND parts lists must be sealed by a soldering iron after replacement and adjustment. Figure1-1. Leakage Current Test Circuit CKB5237L/7227L...

  • Page 5: Servicing Precautions

    4. After servicing, always check that the screws, lead to the instrument chassis ground before components and wiring have been correctly connecting the positive lead; always remove reinstalled. Make sure that the area around the the instrument’s ground lead last. serviced part has not been damaged. CKB5237L/7227L...
  • Page 6 Some solder removal devices not classified as enough static electricity to damage an ESD. “anti-static” can generate electrical charges Indicates ESDs on the Schematic Diagram sufficient to damage ESDs. in this manual. CKB5237L/7227L...

  • Page 7: Product Specifications

    110 MHz Active Display CKB5237L ; Horizontal : 267 mm ± 3 mm, Vertical : 200 mm ± 3 mm CKB7227L ; Horizontal : 306 mm ± 3 mm (4:3 ratio), Vertical : 230 mm ± 3 mm Input Voltage AC 90 to 264 Volts, 60 Hz or 50 Hz ±...

  • Page 8: Pin Assignments

    GND-R Green Blue H/V Sync Sense 0 DDC Return Green GND-R GND-G GND-G Sense 1 GND-B Reserved Reserved Blue GND-Sync/Self-raster Sense 2 DDC Data V-Sync H-Sync GND-B V-Sync DDC Clock H-Sync Figure 2-5. Male Type Figure 2-6. Male Type CKB5237L/7227L...

  • Page 9: Timing Chart

    B : Horizontal sync width O : Frame time total P : Vertical sync width C : Back porch D : Active time Q : Back porch R : Active time E : Front porch S : Front porch CKB5237L/7227L...
  • Page 10 B : Horizontal sync width O : Frame time total P : Vertical sync width C : Back porch D : Active time Q : Back porch R : Active time E : Front porch S : Front porch CKB5237L/7227L...
  • Page 11 3 Opearating Instructions 3-1 Front View and Control 3-1-1 CKB5237L/7227L Front View – MENU EXIT Figure 3-2. Rear View Table 3-1. Front Panel Controls Location Symbol Description – Power Button MENU EXIT Power Indicator LED (Dual Color) Menu Display & Menu Exit...

  • Page 12: Operating Instructions

    – decrease the contrast. To access a function, use the menu button to move to its associated icon, and then use the – button to select the adjustment type. Then, push the ↵ button to access the function. CKB5237L/7227L...
  • Page 13 72 W (max.) Power Less than Less than 78 W 65 W Consumption/hr 15 W (nominal) (nominal) Table 3-3. Display Power Management Signaling (DPMS) ;CKB5237L Power saving function EPA/NUTEK State Normal Operation Stand-By Suspend Mode Power Off Mode Items Mode Position A...
  • Page 14 3 Operating Instructions Memo CKB5237L/7227L...

  • Page 15: Disassembly & Reassembly

    4 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the CKB5237L/7227L monitors. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 4-1 Disassembly (CKB7227L) Cautions:1. Disconnect the monitor from the power source before disassembly.
  • Page 16 6. Set the monitor on its Base and make sure that the Main PCB and the Tilt Coil. the CRT faceplate was not scratched or 6. Replace all easily accessible ground wires on otherwise damaged. the CRT GND Assembly and Bottom Chassis. CKB5237L/7227L...
  • Page 17 4 Disassembly and Reassembly 4-3 Disassembly (CKB5237L) Cautions:1. Disconnect the monitor from the power source before disassembly. 2. Follow these directions carefully; never use metal instruments to pry apart the cabinet. 4-3-1 Cabinet Disassembly 4-3-3 Removing the Main PCB 1. With a pad beneath it, stand the monitor on its 1.
  • Page 18 4 Disassembly and Reassembly 4-4 Reassembly (CKB5237L) With the CRT facing downward on a protective pad, use the steps that follow to reassemble the monitor. 4-4-1 Replacing the CRT 7. Replace the Degaussing Coil at CN600 on the Main PCB.

  • Page 19: Alignment & Adjustments

    Vertical: 50 Hz to 120 Hz (Automatic) Unless otherwise specified, adjust at the 17”: 1024 x 768 mode (68 kHz/85 Hz), 15”: 800 x 600 mode (54 kHz/85 Hz) signals. Refer to Table 2-1 on pages 2-4 and 2-5. CKB5237L/7227L...
  • Page 20 Computer with a video board that uses the ET-4000 chipset (strongly recommended if Figure 5-1 : Setup 1, With Signal Generator using Samsung DM 200 software) and that displays: 1024 x 768 @ 85 Hz, or 800 x 600 @ 85 Hz (minimum).

  • Page 21: Display Control Adjustments

    Horizontal: 16.7~19.2 Horizontal: Less than 0.90 mm 230 mm (17”) and 200 mm (15”). 5 : 4 (Tolerance: ± 3 mm.) Vertical : Less than 0.96 mm Vertical : 17.8~20.5 CKB5237L/7227L...
  • Page 22 5 Alignment and Adjustments 5-2-2 (a) HORIZONTAL LINEARITY ADJUSTMENT 5-2-4 Pinbalance Adjustment The CKB5237L/7227L monitors offer only Vertical CONDITIONS Linearity adjustments. Horizontal Linearity is Scanning frequency: 68 kHz/85 Hz (17”) fixed on the Chassis and is not adjustable. 54 kHz/85 Hz (15”)
  • Page 23 30 minutes. 5-2-9 To Delete the User Mode Data To delete the adjustment data from the user modes, click USER DELETE. Figure 5-7. Pincushion 5-2-10 Save the Data To save the adjustment data for a mode, press FACTORY SAVE. CKB5237L/7227L...

  • Page 24: Color Adjustments

    (for 15”) WHITE WINDOW 1. Select COLOR CHANNEL 1 to control the color for 9300K. 2. Adjust the luminance of the back raster to between 0.5 to 0.7 ft-L using the Screen VR Figure 5-9. Full White Pattern (T501) controls. CKB5237L/7227L...
  • Page 25 5-3-2 (c) steps 2 and 3. Scanning frequency: 68 kHz/85 Hz (17”) 54 kHz/85 Hz (15”) 5-3-3 (d) WHITE BALANCE ADJUSTMENT VERIFICATION Display image: Back raster pattern Refer to the procedure for 9300K, section 5-3-2 (d). Brightness: Maximum Contrast: Maximum CKB5237L/7227L...
  • Page 26 Color purity is the absence of undesired color. movement during shipping. Conspicuous mislanding (unexpected color in a uniform field) within the display area shall not be visible at a distance of 50 cm from the CRT surface. CKB5237L/7227L...
  • Page 27 CONDITIONS Direction: Monitor facing east Warm-up: 30 minutes Display image: Crosshatch pattern Samsung SDD CRT Tolerances: See Table 5-4 1 Setup Bolt 2 Bow Magnet 3 Band 4 2-Pole Magnet PROCEDURE...
  • Page 28 Red and Blue Alignment Red, Blue and Green Alignment (4-pole magnet movement) (6-pole magnet movement) O-Magnetic VERTICAL Field MISALIGNMENT (1) SPREAD MAGNET HORIZONTAL MISALIGNMENT Motion (1) SHIFT DIRECTION OF CROSSHATCH PATTERN Motion (2) MOVE TOGETHER SHIFT DIRECTION OF CROSSHATCH PATTERN 5-10 CKB5237L/7227L...
  • Page 29 Bow convergence adjustments are not available Coil (X ). Turning it right raises the right end of for the CRTs used in the CKB5237L/7227L the blue line and lowers the left end. Turning the monitors. While all CRTs have bow convergence...
  • Page 30 5 Alignment and Adjustments Memo 5-12 CKB5237L/7227L...

  • Page 31: Troubleshooting

    CH1 P-P = 292 V CH1 RMS = 181.6 V CH1 P-P = 444 V CH1 RMS = 354.2 V CH1 P-P = 3.68 V CH1 RMS = 840 mV CH1 P-P = 3.80V CH1 RMS = 902 mV CKB5237L/7227L...
  • Page 32 Check Q403. Pin 1 of T401? WAVEFORMS 8.80 V (IC302, #26) 124.8 V (T401, #1) Check CN400, D403 and Q406. CH1 P-P = 8.80 V CH1 RMS = 6.176 V CH1 P-P = 124.8 V CH1 RMS = 66.16 V CKB5237L/7227L...
  • Page 33 Does switching pulse appear at Check Q503, Q510, Q512 and Q513. base and collector of Q503? CH1 P-P = 848 V CH1 RMS = 305.2 V Does signal appear at gate Check IC501 and FBT. of Q504 ? Check Q504, D508 and FBT. CKB5237L/7227L...
  • Page 34 Does H/V sync pulse Check signal cable connection appear at Pins 4 and the signal sources. and 10 of IC105? Check IC105. Does H/V sync output appear at Pins 20 Check Micom and IC202. and 21 of IC202? Check IC401 CKB5237L/7227L...

  • Page 35: No Video

    CH1 P-P = 720m V CH1 RMS = 2.602 V Check contrast circuit Replace the IC102 5.5 V (IC101 Pin #23) on the main Board (Q507 and Q511). Check DC 75 V at Pin 6 of IC102. CH1 P-P = 5.5 V CH1 RMS = 1.084 V CKB5237L/7227L...
  • Page 36 Does the OSD output Check IC102 CH1 P-P = 4.96 V CH1 RMS = 4.472 V signal appear at Pins 21, 22 and 23 of IC104? Check the pins of IC600 and the related circuit. OSD Gain (IC101 Pin 11) Check IC102 CKB5237L/7227L...
  • Page 37 6-9 Degauss Operation Failure When you push the manual degauss button, Replace IC202 does 5 V appear at Pin 3 of IC202? When pushing the manual degauss button, does the Q600 Replace Q600 operate well? Check and replace if necessary RL601. CKB5237L/7227L...

  • Page 38: Suspend Mode

    Active Active Green Stand-By Inactive Active Blank Green blinking (0.5sec) Suspend Active Inactive Blank Green blinking (1sec) Inactive Inactive Blank blinking (1sec) Note: If the signal cable is removed, DPMS function does not operate and a self raster displays. CKB5237L/7227L...
  • Page 39 6 Troubleshooting 6-11 User Controls Don’t Work Does the DC level change at Pins Check the button 13 and 14 of IC201 when you push (SW201 ~ SW203) the Main PCB? Check IC201, IC202 and RESET circuit. CKB5237L/7227L...
  • Page 40 6 Troubleshooting Memo 6-10 CKB5237L/7227L...

  • Page 41: Exploded View & Parts List

    8 Exploded View and Parts List 8-1 CKB5237L ASS’Y H/SINK VODEO BH99-10050A A6063S 1 EA ASS’Y SHIELD-SOCKET BH75-10571A SPTE T=0.3 1 EA TAPTITE SCREW 6003-000122 BH,M4,L12 1 EA COVER-SIGNAL BH72-60603A ABS V0 IV16 1 EA TAPTITE SCREW 6003-000009 BH,M4,L16 4 EA...
  • Page 42 8 Exploded View and Parts List 8-2 CKB7227L CKB5237L/7227L 13-2...
  • Page 43 8 Exploded View and Parts List 13-3 CKB5237L/7227L...
  • Page 44 8 Exploded View and Parts List Memo CKB5237L/7227L 13-4...
  • Page 45 2401-001016 C-AL 3.3uF,20%,50V,BP,6x11mm,5mm,TP C311 42.8 139.5 2301-000168 C-FILM,PEF 150nF,5%,100V,11.5x19mm,7.5mm C312 33.3 140.8 2305-000001 C-FILM,MPEF 470nF,10%,63V,6.0X15.5X7.5,5mm C313 34.1 2202-002008 C-CERAMIC,MLC-AXIAL 10nF,+80-20%,50V,Y5V,2.3X3.0 C314 24.2 135.1 2401-000031 CAP-AL.ELEC,476M,1C (T)16V 47M C315 61.3 2201-000013 CAP-CERAMIC,471K,1H,Y5P 470PF,50V,10%,10%,Y5P,DISC- C316 81.3 63.1 2202-002009 C-CERAMIC,MLC-AXIAL 100nF,+80-20%,50V,Y5V,2.3X3.0 CKB5237L/7227L 10-3...
  • Page 46 15Inch only C461 65.2 159.7 2301-000231 C-FILM,PEF 3.3nF,5%,100V,5.8x12.5mm,5mm,T C462 27.4 212.3 2301-000012 C-FILM,PEF 2.2nF,5%,100V,10.5x12.5x6.5,5m C463 45.7 2301-000012 C-FILM,PEF 2.2nF,5%,100V,10.5x12.5x6.5,5m C464 212.5 2301-000012 C-FILM,PEF 2.2nF,5%,100V,10.5x12.5x6.5,5m C465_7 26.6 173.1 2301-000287 CAP-MYLAR,562J,2A,5P (T)100V 562J 17Inch only C477 45.6 176.5 2401-000050 C-AL 10uF,20%,16V,GP,5x11mm,2mm,TP 10-4 CKB5237L/7227L...
  • Page 47 (T)100V 104J C614 182.4 19.4 2201-000024 CAP-CERAMIC,472M,2B 4.7NF,125VAC,20%,Y5V,RADIAL C619 97.7 96.3 2401-000025 CAP-AL.ELEC,107M,1C (T)16V 100M C620 136.5 2201-000014 C-CERAMIC,DISC 330pF,10%,1KV,Y5P,6x3.5,5,TP C621 168.6 19.4 2201-000024 CAP-CERAMIC,472M,2B 4.7NF,125VAC,20%,Y5V,RADIAL C623 150.3 15.1 2301-000011 C-FILM,PEF 1nF,5%,100V,10.5x12.5x6.5,5mm C624 147.8 24.2 2301-000287 CAP-MYLAR,562J,2A,5P (T)100V 562J CKB5237L/7227L 10-5...
  • Page 48 13.5 205.3 0401-000005 DIODE-SIG,1N4148,DO-35 75V,150MA,1V,10MA D416 0401-000005 DIODE-SIG,1N4148,DO-35 75V,150MA,1V,10MA D477 38.2 175.8 0401-000005 DIODE-SIG,1N4148,DO-35 75V,150MA,1V,10MA D502 163.8 133.5 0401-000005 DIODE-SIG,1N4148,DO-35 75V,150MA,1V,10MA D508 229.1 130.9 0402-001118 DIODE-RECTIFIER UF1G,400V,1.2A,DO-204AL,TP D509 223.4 138.7 0402-000274 DIODE-REC,UF4004,DO-41 400V,1A,1V,1A,50NS,0.5A D510 160.4 0401-000006 DIODE-SWITCHING BAV21,200V,250mA,400mW,50nS,DO 10-6 CKB5237L/7227L...
  • Page 49 EYELET 2.2 HOLE 3.0 PAD 5.0 EY607 158.5 46.7 6042-000002 EYELET EYELET 1.5 HOLE 2.2 PAD 4.0 EY608 199.7 149.1 6042-000001 EYELET EYELET 2.2 HOLE 3.0 PAD 5.0 EY610 183.5 61.7 6042-000002 EYELET EYELET 1.5 HOLE 2.2 PAD 4.0 CKB5237L/7227L 10-7...
  • Page 50 0501-000586 TR-NPN,KSC945,TO-92,EBC 0.25W,60V,50V,5V,0.15A Q301 226.1 227.1 0501-000586 TR-NPN,KSC945,TO-92,EBC 0.25W,60V,50V,5V,0.15A Q403 105.3 169.9 0502-000008 TR-POWER 2SC3503-E,NPN,300V,300V,100mA Q405 216.6 0505-001102 FET-SILICON IRFR/U230A,N,200V,7.5A,400mohm Q406 189.9 175.7 0502-001001 TR-POWER KSC5088,NPN,1500V,1500V,8A,50W Q407 81.5 185.3 0501-000010 TR-NPN,KSC1008,TO-92,ECB 0.8W,80V,60V,8V,0.7A Q408 26.1 216.6 0505-001102 FET-SILICON IRFR/U230A,N,200V,7.5A,400mohm 10-8 CKB5237L/7227L...
  • Page 51 2001-000067 REF-CF,10K,5%,1/6W 150V,-1300 TO +350PPM/C,R-A R236 36.7 30.4 2001-000367 R-CARBON 15Kohm,5%,1/6W,AA,TP,1.8x3.2mm R239 29.4 18.4 2001-000367 R-CARBON 15Kohm,5%,1/6W,AA,TP,1.8x3.2mm R237_U 34.3 18.4 2001-000367 R-CARBON 15Kohm,5%,1/6W,AA,TP,1.8x3.2mm USB only R238_U 31.9 18.4 2001-000367 R-CARBON 15Kohm,5%,1/6W,AA,TP,1.8x3.2mm USB only R240 18.4 2001-000367 R-CARBON 15Kohm,5%,1/6W,AA,TP,1.8x3.2mm CKB5237L/7227L 10-9...
  • Page 52 126.7 108.5 2003-000703 R-METAL OXIDE(S) 470ohm,5%,3W,AA,TP,6x16mm R418 135.5 169.4 2003-000512 REF-MO,15K,5%,3W(S 500V,-200 TO +200PPM/C,R-AX R419 112.5 161.8 2003-000793 REF-MO,8.2K,5%,2W(S 500V,-200 TO +200PPM/C,R-AX R414_5 2001-001005 R-CARBON 82ohm,5%,1/6W,AA,TP,1.8x3.2mm 15Inch only R414_7 92.4 160.4 2001-000029 REF-CF,100,5%,1/6W 150V,-1300 TO +350PPM/C,R-A 17Inch only 10-10 CKB5237L/7227L...
  • Page 53 R467_7 178.4 2001-000074 REF-CF,33K,5%,1/6W 150V,-1300 TO +350PPM/C,R-A 17Inch only R470 32.4 192.4 2001-000632 R-CARBON 30Kohm,5%,1/6W,AA,TP,1.8x3.2mm R473 18.4 192.3 2001-000632 R-CARBON 30Kohm,5%,1/6W,AA,TP,1.8x3.2mm R474 10.9 220.9 2001-000432 R-CARBON 1Mohm,5%,1/4W,AA,TP,2.4x6.4mm R475 215.5 2001-000432 R-CARBON 1Mohm,5%,1/4W,AA,TP,2.4x6.4mm R476 46.1 215.5 2001-000432 R-CARBON 1Mohm,5%,1/4W,AA,TP,2.4x6.4mm CKB5237L/7227L 10-11...
  • Page 54 R551 272.9 232.9 2001-000107 REF-CF,150K,5%,1/2W(S 300V,-200 TO +200PPM/C,R-AX R552 276.8 201.4 2001-000431 R-CARBON 1Mohm,5%,1/2W,AA,TP,3.3x9mm R554 278.7 123.8 2001-000040 REF-CF,470,5%,1/6W 150V,-1300 TO +350PPM/C,R-A R555 170.3 148.4 2001-000053 REF-CF,3.3K,5%,1/6W 150V,-1300 TO +350PPM/C,R-A R556 169.9 141.7 2001-000976 REF-CF,8.2K,5%,1/6W 150V,-1300 TO +350PPM/C,R-A 10-12 CKB5237L/7227L...
  • Page 55 SWITCH-TACT 15V,20mA,90-170gf,7.5x7mm,SPST SW202 131.5 3404-000244 SWITCH-TACT 15V,20mA,90-170gf,7.5x7mm,SPST SW203 120.5 3404-000244 SWITCH-TACT 15V,20mA,90-170gf,7.5x7mm,SPST SW204 103.5 3404-000244 SWITCH-TACT 15V,20mA,90-170gf,7.5x7mm,SPST SW401 76.3 239.5 3406-000002 SWITCH-TOGGLE,SP3T ON-ON-ON,STRAIGHT T401 177.7 BH26-30303Y TRANS-HOR.DRIVE 6-4(50MH T402 167.6 190.9 BH26-30337K TRANS-HOR.DRIVE 1.5mH,10P,EER2828,EER282 T402 BH26-30336D TRANS-HOR.PULSE 1.5MH,10P,EER2828,PM-2,PL-3,1. CKB5237L/7227L 10-13...
  • Page 56 VR401_D 130.3 238.5 2103-000493 RES-VAR,SF-ROUND 30%,0.1W,SIDE,5KOHM Delete VR501 232.6 2103-000454 VR-SEMI 50Kohm,25%,0.3W,SIDE VR600_D 151.5 2103-000006 RES-VAR,SF-ROUND 30%,0.1W,TOP,220 ,500OHM Delete X201 42.5 35.4 2801-003413 CRYSTAL-UNIT 24MHz,30ppm,28-ABQ,18pF,20ohm ZD502 133.7 148.4 0403-000005 DIODE-ZEN,UZ-5.1B,DO-35 0.5W,10MA ZD601 225.7 40.8 0403-000351 DIODE-ZEN,UZ-4.7B,DO-35 ST 02169-403-420 10-14 CKB5237L/7227L...

  • Page 57: Video Pcb

    10 PCB Diagrams and Electrical Parts List 10-2 Video PCB 10-2-1 Top View 10-2-2 Bottom View CKB5237L/7227L 10-15...
  • Page 58 100nF,+80-20%,50V,Y5V,2.3X3.0 CG05 79.3 2305-000009 CAP-MPETP,104J,2E,7.5P (T)250V 104J CG06 114.9 70.7 2301-000015 CAP-MYLAR,103J,2A,5P (T)100V 103J CG07 87.2 62.4 2201-000010 C-CERAMIC,DISC 33pF,5%,50V,NPO,5x3.5,5,TP CG09 102.5 44.4 2401-000023 C-AL 1uF,20%,50V,GP,5x11mm,5mm,TP CN101 11.2 75.8 3711-003614 CONNECTOR-HEADER BOX,13P,1R,2mm,ANGLE,SN CN103 57.3 93.3 3711-001147 CONNECTOR-HEADER BOX,9P,1R,2.50mm,ANGLE,SN CKB5237L/7227L 10-16...
  • Page 59 270ohm,5%,1/6W,AA,TP,1.8x3.2mm R103 41.6 2001-000029 R-CARBON 100ohm,5%,1/6W,AA,TP,1.8x3.2mm R104 39.5 51.1 2001-000069 R-CARBON 12Kohm,5%,1/6W,AA,TP,1.8x3.2mm R105 57.2 86.1 2001-000067 R-CARBON 10Kohm,5%,1/6W,AA,TP,1.8x3.2mm R106 49.2 83.6 2001-000106 REF-CF,1.5K,5%,1/6W 150V,-1300 TO +350PPM/C,R-AXIAL R107 22.4 2001-000048 R-CARBON 2.2Kohm,5%,1/6W,AA,TP,1.8x3.2m R108 108.4 16.6 2003-000704 R-METAL OXIDE(S) 47Kohm,5%,1W,AA,TP,3.3x9mm 10-17 CKB5237L/7227L...
  • Page 60 76.1 2001-000039 R-CARBON 390ohm,5%,1/6W,AA,TP,1.8x3.2mm RR05 53.2 73.7 2001-000301 REF-CF,10,5%,1/6W 150V,-1300 TO +350PPM/C,R-AXIAL RR06 90.1 57.3 2001-000323 R-CARBON 120ohm,5%,1/4W,AA,TP,2.4x6.4mm RR07 89.3 80.9 2001-000547 REF-CF,270K,5%,1/6W 150V,-1300 TO +350PPM/C,R-AXIAL RR15 107.2 43.7 2001-000043 R-CARBON 1Kohm,5%,1/6W,AA,TP,1.8x3.2mm RR18 2001-000077 REF-CF,47K,5%,1/6W 150V,-1300 TO +350PPM/C,R-AXIAL CKB5237L/7227L 10-18...
  • Page 61 Loc. No. Coordinates (X,Y) New Code No. Description Specification Remarks ZD101 21.9 56.1 0403-000005 DIODE-ZEN,UZ-5.1B,DO-35 0.5W,10MA ZD102 21.9 60.4 0403-000005 DIODE-ZEN,UZ-5.1B,DO-35 0.5W,10MA ZD103 15.7 45.1 0403-000005 DIODE-ZEN,UZ-5.1B,DO-35 0.5W,10MA ZD104 21.9 51.2 0403-000005 DIODE-ZEN,UZ-5.1B,DO-35 0.5W,10MA ZD105 21.9 53.7 0403-000005 DIODE-ZEN,UZ-5.1B,DO-35 0.5W,10MA 10-19 CKB5237L/7227L...
  • Page 62 10 PCB Diagrams and Electrical Parts List 10-3-3 CRT PCB Parts (CKB5237L) Loc. No. Coordinates (X,Y) New Code No. Description Specification Remarks BD102 63.2 49.1 3301-000011 MAG-CORE,FERRITE,BEAD 1.2UH,3.5_5.7MM,10 OHM C181 46.1 43.4 2202-002009 C-CERAMIC,MLC-AXIAL 100nF,+80-20%,50V,Y5V,2.3X3.0 C182 67.3 22.4 2201-000530 C-CERAMIC,DISC 4.7nF,10%,500V,Y5P,12.5x4,5,TP...
  • Page 63 RR17 48.6 2002-000142 R-COMPOSITION 39ohm,10%,1/2W,AA,TP,3.5x9.5mm 39.5 29.4 3704-000108 PHI29_D/F,SMALL TYPE CON-JACK CRT SOCKET,12P SK101 45.1 43.6 4715-000102 SURGE ABSORBER 200V,20%,1000A,RADIAL SK102 24.5 4715-000106 SPARK-GAP DSP-301N SK103 31.6 42.9 4715-000102 SURGE ABSORBER 200V,20%,1000A,RADIAL SK104 58.7 19.8 4715-000106 SPARK-GAP DSP-301N 10-21 CKB5237L/7227L...
  • Page 64 BH39-10002A CBF-POWER/CORD WALL,1VR,1850MM,110V BH39-10006A CBF-POWER/CORD WALL,1VR,1830MM,220V SEAU BH39-10007A CBF-POWER/CORD WALL,1VR,1830MM,220V SEUK BH39-10307A CBF-POWER/CORD WALL,1VR,1830MM,110V JAPAN BH39-10339A CBF-POWER/CORD WALL,GRY,1830MM,220V(only S/M model) SEUK BH39-10339N CBF-POWER/CORD WALL,1VR,1550MM,220V CHINA BH39-10339E CBF-POWER/CORD WALL,IVR,1830MM,110V SIGNAL CABLE BH39-203336U CBF-SIGNAL ATT,2000MM,15P,IVORY,UL 17Inch BH39-20336W CBF-SIGNAL ATT,1700MM,15P,IVORY,UL 15Inch 10-22 CKB5237L/7227L...

  • Page 65: Block Diagram

    8 Block Diagrams CKB5237L CKB5237L/7227L...
  • Page 66 8 Block Diagrams CKB7227L CKB5237L/7227L...
  • Page 67 3 : GND, 4 : Vcc KSB772 Q601 2SC3503-E Q403 KA2H0880 IC602 IRF630 Q409 1 : Drain, 2 : GND, IRF740 Q411, Q504 3 : Vcc, 4 : F/B, 5 : Sync IRFR/U230A Q405, Q408 G D S CKB5237L/7227L 10-23...
  • Page 68 10 PCB Diagrams and Electrical Parts List PARTS TYPE NO. REF. NO. PARTS TYPE NO. REF. NO. TDA9302H IC300 TL494 IC501 LM2405 LSC4390 IC102 IC104 KA2143 IC101 CKB7227(IV17) IC103 TDA9109 IC302 72E75 IC202 LTV817M-SM QP601 24LC04 IC205 24LC21 IC204 L272M IC301 KA358 IC502 10-24 CKB5237L/7227L...

  • Page 69: Wiring Diagram

    9 Wiring Diagrams CKB5237L SIGNAL CABLE CN103 CRT GND ASS'Y CRT GND ASS'Y CN101 CN12 CN104 CN103 CN102A D-COIL CN600 CN401 CN402 CN301 CN400 TILT COIL TCO (OTIONAL) CKB5237L/7227L...
  • Page 70 9 Wiring Diagrams CKB7227L SIGNAL CABLE CN103 CRT GND ASS'Y CN101 CN12 CN104 CN103 CN102A D-COIL CN600 CN401 CN400 CN402 TILT COIL CN300A_7 CKB5237L/7227L...

  • Page 71: Schematic Diagrams

    1. The secondary voltage is read with an SSVM from the indicated point to a cold ground ( The primary voltage is read with an SSVM from the indicated point to a hot ground ( 2. This schematic diagram is subject to change without notice. CKB5237L/7227L 11-1...
  • Page 72 R505_7 C538 17" ONLY 15" ONLY D524_7 R506 C522_7 R201_7 L501 R302 R310 R517 C456 R441_7 R444_7 C422 L406 L402 C432 C434 C458 L401 Q417_7 R443 C455_5 R467_7 R425 C465_7 R417 C419 R451 R450 R409 R414 R613 R315 11-2 CKB5237L/7227L...
  • Page 73 CH1 P-P = 260 mV CH1 RMS = 2.286 V CH1 P-P = 332 V CH1 RMS = 138.0 V CH1 P-P = 88 V CH1 RMS = 288.2 V 5.20 V (IC202, #16) CH1 P-P = 5.20 V CH1 RMS = 4.912 V CKB5237L/7227L 11-3...
  • Page 74 11 Schematic Diagrams 11-5 Video Schematic Diagram 11-4 CKB5237L/7227L...
  • Page 75 3.88 V (IC102, #11) 48.4 V (DR05, Anode) CH1 P-P = 4.96 V CH1 RMS = 4.472 V CH1 P-P = 3.88 V CH1 RMS = 3.464 V CH1 P-P = 48.4 V CH1 RMS = 26.62 V CKB5237L/7227L 11-5...
  • Page 76 11 Schematic Diagrams 11-6 CRT Schematic Diagram (CKB5237L) 11-6 CKB5237L/7227L...
  • Page 77 11 Schematic Diagrams 11-7 CRT Schematic Diagram (CKB7227L) CKB5237L/7227L 11-7...
  • Page 78 11 Schematic Diagrams Memo 11-8 CKB5237L/7227L...

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