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Computer monitors - CRT, TFT, LCD, touch screen, plasma display - service manuals and repair information

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File name CHB7707L_XAA.0000051600.E.01.pdf

COLOR MONITOR CHB5707L/5237L CHB6107L(M)/6117L(M) CHB7707L(M)/7227L(M)/7727L(M) SERVICE COLOR MONITOR Manual CONTENTS 1. Precautions 2. Reference Information 3. Product Specifications 4. Operating Instructions 5. Disassembly & Reassembly 6. Alignment & Adjustments 7. Troubleshooting 8. Exploded View & Parts List MENU 9. Electrical Parts List + 10. Block Diagram 11. PCB Diagrams 12. Wiring Diagram 13. Schematic Diagrams Samsung Electronics Co., Ltd. September 1998 Printed in Korea Code No.: BH68-61129A
File name CHB7707L_XAA.0000051600.E.02.pdf

1 Precautions 1-1 Safety Precautions WARNINGS 1. For continued safety, do not attempt to modify the circuit board. 2. 3. Disconnect the AC power before servicing. When the chassis is operating, semiconductor heatsinks are potential shock hazards. 3. 2. Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacitor networks, mechanical insulators, etc. Leakage Current Hot Check (Figure 1-1): WARNING: Do not use an isolation transformer during this test. Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI C101.1, Leakage Current for Appliances), and Underwriters Laboratories (UL Publication UL1410, 59.7). With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the unitÕs AC switch first in the ON position and then OFF, measure the current between a known earth ground (metal water pipe, conduit, etc.) and all exposed metal parts, including: metal cabinets, screwheads and control shafts. The current measured should not exceed 0.5 milliamp. Reverse the power-plug prongs in the AC outlet and repeat the test. (READING SHOULD NOT BE ABOVE 0.5mA) 1-1-1 Servicing the High Voltage VR and CRT : WARNING:A high voltage VR replaced in the wrong direction may cause excessive X-ray emissions. Caution: When replacing the high voltage adjustment VR, it must be fixed by a soldering iron after it is properly set. 1. When servicing the high voltage system, remove the static charge by connecting a 10 kohm resistor in series with an insulated wire (such as a test probe) between the chassis and the anode lead. If the HV VR requires adjustment, (a) Replace the VR and adjust the high voltage to the specification. (b) Use a soldering iron to melt the adjustment cap on the HV VR to prevent any movement. When troubleshooting a monitor with excessively HV, avoid being unnecessarily close to the monitor. Do not operate the monitor for longer than is necessary to locate the cause of excessive voltage. High voltage should always be kept at the rated value, no higher. Only when high voltage is excessive are X-rays capable of penetrating the shell of the CRT, including the lead in glass material. Operation at high voltages may also cause failure of the CRT or high voltage circuitry. When the HV regulator is operating properly, there is no possibility of an X-ray problem. Make sure the HV does not exceed its specified value and that it is regulating correctly. The CRT is especially designed to prohibit X-ray emissions. To ensure continued X-ray protection, replace the CRT only with one that is the same or equivalent type as the original. Handle the CRT only when wearing shatterproof goggles and after completely discharging the high voltage anode. Do not lift the CRT by the neck. 4. 2. 3. DEVICE UNDER TEST TEST ALL EXPOSED METAL SURFACES LEAKAGE CURRENT TESTER 4.
File name CHB7707L_XAA.0000051600.E.03.pdf

2 Reference Information 2-1 List of Abbreviations, Symbols and Acronyms 2-1-1 Abbreviations Abbreviation ASS'Y B B+ ADJ B-CUT B-GAIN BRIGHT C C-MIC CLK CM CN CONT D-SUB EEP-CLK EXT EXT-MIC Freq. FU G G-CUT G-GAIN GND H H H-DRV H-DY H-FLB H-FV H-LIN H-POSI H-SIZE H/PHONE Hz I-SENSE lb MAX MIC MIN MP MPP MO CHB5**7L/6**7L/7**7L Definition Assembly Blue B+ Adjustment Blue-Cutoff Blue Gain Brightness R-Composition Condenser Microphone Clock R-Cement Connector Contrast D-Subminiature Electrically Erasable and Programmable Clock External External Microphone Frequency Fusible Green Green-Cutoff Green Gain Ground Horizontal Heater Horizontal Drive Horizontal Deflection York Horizontal Flyback Horizontal-Feedback Voltage Horizontal Linearity Horizontal Position Horizontal Size Headphone Hertz Current-Sense Pound Maximum Microphone Minimum C-Metalized Polyester Metal Polypropylene R-Metal Oxide Abbreviation OSC P PARA PARALL PIN-BAL PRE-AMP PS1 PS2 PWR R R-CUT R-GAIN RST S-PIN S-RASTER S/W SCAP SPK SYNC T TR TRAP U-COM V V-DY V-FLB V-LIN V-MUTE V-OUT V-PARA V-POL V-POSI V-SENSE V-SIZE WW X-TAL K M uF nF pF Definition Oscillator C-Polyester Parabola Parallelogram Pincushion Balance Pre-Amplifier Power Saving1 (suspend) Power Saving2 (off) Power Red Red-Cutoff Red Gain Reset Side Pincushion Self Raster Switch S Correction Capacitor Speaker Synchronization C-Tantalum Transistor Trapezoid Microprocessor Vertical Vertical Deflection York Vertical Flyback Vertical Linearity Video Mute Vertical Output Vertical Parabola V-Polarity Vertical Position Voltage-Sense Vertical Size R-Wire Wound Crystal ohm 1000 ohm 1000 K microfarad (10-6F) nanofarad (10-9F) picofarad (10-12F) 2-1 2 Reference Information 2-1-2 Symbols Can emit X-radiation Hot Ground Cold Ground Electrostatically Sensitive Device (ESD) ! Provides special safety considerations 2-1-2 Acronyms Acronym ABL AC ACL AFC ANSI CMOS CRT DC DDC DF DMM DPMS DVM DY EEPROM ESD ESF FBT FET FH FS FV GD Definition Automatic Brightness Limits Alternating Current Automatic Contrast Limit Automatic Frequency Control American National Standards Institute Complementary Metal Oxide Semiconductor Cathode Ray Tube Direct Current Data Display Channel Dynamic Focus Digital Multimeter Display Power Management Signaling Digital Voltmeter Deflection York Electrically Erasable and Programmable Read only Memory Electrostatically Sensitive Device Electronic Static Field Flyback Transformer Field Effect Transistor Horizontal Frequency Fail Safe Vertical Frequency Geometric Distortion VGA VR W/B Acronym H/V HV I/O IC LED MAC MOFA OCP OP AMP OSD P-P PCB PLL PWM SMPS SVGA SWEDAC TP UL USB VESA Test Point Underwriters Laboratories Universal Serial Bus Video Electronics Standard Association Video Graphics Array Variable Registor White Balance Definition Horizontal/Vertical High Voltage Input/Output Integrated Circuit Light Emitting Diode Macintosh Mask Outside Frame Assemble Over Current Protection Operational Amplifier On Screen Display
File name CHB7707L_XAA.0000051600.E.04.pdf

3 Product Specifications 3-1 Specifications Item Picture Tube: Description 15-Inch (38 cm): 13.8-inch (35 cm) viewable, 16-Inch (40 cm): 15.0-inch (38 cm) viewable, 17-Inch (43 cm): 15.7-inch (39.80 cm) viewable, Full-square flat-face tube, 90° Deflection, 0.28 mm Dot pitch, Semi- tint, Non-glare, Invar shadow mask, Anti-static silica coating Conventional type (16"), AK Shadow mask (16") Horizontal : 30 kHz to 70 kHz (Automatic) Vertical : 50 Hz to 160 Hz (Automatic) Unlimited colors Horizontal : 1280 Dots Vertical : 1024 Lines Scanning Frequency Display Colors Maximum Resolution Input Video Signal Input Sync Signal Maximum Pixel Clock rate Active Display Analog, 0.714 Vp-p positive at 75 , internally terminated Separate Sync 110 MHz CHB5**7L ; Horizontal : 267 mm ± 3 mm, Vertical : 200 mm ± 3 mm CHB6**7L : Horizontal : 290 mm ± 3 mm, Vertical : 217.5 mm ± 3 mm CHB7**7L ; Horizontal : 306 mm ± 3 mm (4:3 ratio), Vertical : 230 mm ± 3 mm AC 90 to 264 Volts, 60 Hz or 50 Hz ± 3 Hz 80 Watt (max) : 15"/16", 90 Watt (max) : 17" Unit (W x D x H) Carton (W x D x H) 14.3 x 15.4 x 14.8 Inches (362 x 390 x 377 mm) 17.9 x 19.6 x 17.5 Inches (454 x 497 x 445 mm) 15.6 x 16.7 x 16.1 Inches (395 x 425 x 401 mm) 20.2 x 21.6 x 20.7 Inches (513 x 548 x 527 mm) 16.5 x 16.7 x 16.6 Inches (420 x 425 x 421 mm) 21.0 x 21.7 x 21.3 Inches (534 x 552 x 541 mm) CHB5**7L : 27.94 lbs (12.7 kg) / 31.90 lbs (14.5 kg) CHB6**7L : 32.63 lbs (14.8 kg) / 37.04 lbs (116.8 kg) CHB7**7L : 36.38 lbs (16.5 kg) / 41.89 lbs (19 kg) Operating Temperature : 32°F to 104°F (0°C to 40°C) Humidity : 10 % to 80 % Storage Temperature : -4°F to 113°F (-20°C to 45°C) Humidity : 5 % to 95 % : TTL level positive/negative Input Voltage Power Consumption Dimensions CHB5**7L CHB6**7L CHB7**7L Weight (Net/Gross) Environmental Considerations Speaker System Specifications · Output Power : 3 Watt/CH (THD 10%) (Optional) · Speaker Drivers : 2 Inch Neodynium · Impedance (System) : 4 ohm ± 15% · S/N Ratio : 50 dB · Accessory : Two (2) Stereo Cable · Frequency Response : 240 Hz ­ 15,000 Hz · Input Level : 500 mV ± 50 mV · Power Supply : from Monitor 12V 1A · Net : 1.7 lbs (770g) · Dimensions : 10.2" (D) x 10.8" (W) x 3.3" (H) · Above models comply with SWEDAC (MPR II) recommendations for reduced electromagnetic fields. · Designs and specifications are subject to change without prior notice. CHB5**7L/6**7L/7**7L 3-1 3 Product Specifications 3-2 Pin Assignments Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sync 15-Pin Signal Cable Connector (Figure 3-1) Type Separate Red Green Blue GND DDC Return GND-R GND-G GND-B Reserved GND-Sync/Self-raster GND DDC Data H-Sync V-Sync DDC Clock Cable Adapter (Figure 3-2) Macintosh GND-R Red H/V Sync Sense 0 Green GND-G Sense 1 Reserved Blue Sense 2 GND V-Sync GND-B GND H-Sync 5 15 Figure 3-1. Male Type Figure 3-2. Male Type 3-2 CHB5**7L/6**7L/7**7L 3 Product Specifications 3-3 Timing Chart This section of the service manual describes the timing that the computer
File name CHB7707L_XAA.0000051600.E.05.pdf

4 Operating Instructions 4-1 Front View and Control 4-1-1 Front View MENU - + Power Port 1 2 MENU Signal Cable Figure 4-2. Rear View - + Table 4-1. Front Panel Controls Location 1 3 4 5 6 Symbol Description Power Button Power Indicator LED (Dual Color) 2 MENU Figure 4-1. Front Control Panel 3 4 5 6 - Menu Display & Menu Exit Down Button & Brightness Up Button & Contrast Menu Selector Enter Key + CHB5**7L/6**7L/7**7L 4-1 4 Operating Instructions Note 1: This monitor requires a cable adapter for use with a Macintosh computer. The MacMaster Cable Adapter supports all monitors and all Macintosh, Centris, Quadra, Duo Dock, and Power Macintosh computers. If you do not already have a cable adapter, check with your computer dealer. Note 2: When used with a computer equipped with VESA DPMS functions, this monitor is EPA Energy Star compliant and NUTEK compliant. Table 4-2. Display Power Management Signaling (DPMS) State Items Horizontal Sync Vertical Sync Video Power Indicator Normal Operation Power saving function EPA/NUTEK Stand-By Mode Suspend Mode Power Off Mode Position A Position B Active Active Active Green Inactive Active Blanked Green Blinking (0.5 sec) 40 W (nominal) 40 W (nominal) Active Inactive Blanked Green Blinking (0.5 sec) Less than 15 W Less than 15 W Inactive Inactive Blanked Green Blinking (1 sec) Less than 5W Less than 5W Power 90 W (max.) Consumption/hr 78 W (17") (nominal) Power 80 W (max.) Consumption/hr 70 W (16"/15") (nominal) 4-2 CHB5**7L/6**7L/7**7L
File name CHB7707L_XAA.0000051600.E.06.pdf

5 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the CHB5**7L/6**7L/7**7L monitors. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 5-1 Disassembly (CHB7**7L/CHB6**7L) 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. 5-1-1 Cabinet Disassembly 1. With a pad beneath it, stand the monitor on its front with the screen facing downward and the base close to you. Make sure nothing will damage the screen. 2. Working from the back of the monitor remove the signal cover cap out, and remove the 4 screws and carefully pull the rear cabinet up and off the monitor. 3. Remove the 7 screws on the Top Shield and remove it. 4. Remove the 4 screws on the Bottom Cover and pull it upward to remove it. 5. Using pinch-nosed pliers or long-nosed pliers, carefully disconnect the Anode Cap from the CRT. 5-1-3 Removing the Main PCB 1. Follow steps 1 through 5 in ÒCabinet Disassembly,Ó steps 1 through 7 in ÒRemoving the Video PCB and ÒRemoving the CRT Socket PCB,Ó above. 2. Disconnect the Degaussing Coil at CN600 on the Main PCB. 3. Disconnect all easily accessible ground wires from the CRT GND Assembly and Bottom Chassis. 4. Disconnect the connector between CN_Tilt. on the Main PCB and the Tilt coil. 5. Disconnect the DY connector between the DY and the CN300A_7, CN400, CN401 and CN402 connectors on the Main PCB. 6. Carefully lift the Main PCB AssÕy. 7. Remove the 6 screws on the top side of the Main PCB. 8. Lift the Main PCB and place it on a flat, level surface that is protected from static electricity. 5-1-2 Removing the Video PCB & CRT Socket PCB 1. Follow steps 1 through 5 in ÒCabinet Disassembly,Ó above. 2. Disconnect connectors CN103. 3. Lift off the CRT Socket PCB Assembly. 4. Hold the CRT Socket PCB Assembly while you lift the cap on the CRT Socket and pull out the two focus wires, G2 wire. 5. Remove both side screws on the lower edge of the Video PCB AssÕy and the screw on the signal connector and pull the assembly towards you to remove it. 6. Remove all screws on the Video PCB Assembly and remove the Video Shield. 7. Lift out the Video PCB and place it on a flat, level surface that is protected from static electricity. 5-1-4 CRT Ass'y Disassembly 1. Complete all previous steps. 2. Remove the 4 side screws 2 on the top and 2 on either side of the CRT and lift the CRT Unit Bracket. 3. Unhook the Degaussing Coil Assembly and lift it off the CRT. 4. Remove the 4 corner screws and lift the CRT up and away from the Front Cover Assembly and place it on a padded surface. ! Do not lift the CRT by the neck. Caution: If you will be returning this CRT to the monitor, be sure to place the CRT face down on a protective pad. CHB5**7L/6**7L/7**7L 5-1 5 Disassembly and Reassembly 5-2 Disassembly (CHB5**7L) Cautions:1. D
File name CHB7707L_XAA.0000051600.E.07.pdf

6 Alignment and Adjustments This section of the service manual explains how to make permanent adjustments to the monitor. Directions are given for adjustments using the monitor Interface Board Ver. 2.0 and software (SoftJig). 6-1 Adjustment Conditions Caution: Changes made without the SoftJig are saved only to the user mode settings. As such, the settings are not permanently stored and may be inadvertently deleted by the user. 6-1-1 Before Making Adjustments 6-1-1 (a) ORIENTATION When servicing, always face the monitor to the east. 6-1-1 (b) MAGNETIC FIELDS Whenever possible, use magnetic field isolation equipment such as a Helmholtz field to surround the monitor. If a Helmholtz field is not available, frequently degauss the unit under test. Caution: Other electrical equipment may cause external magnetic fields which may interfere with monitor performance. Use an external degaussing coil to limit magnetic build up on the monitor. If an external degaussing coil is not available, use the internal degaussing circuit. However, do not use the internal degaussing circuit more than once per 30 minutes. 6-1-1 (c) WARM-UP TIME The monitor must be on for 30 minutes before starting alignment. Warm-up time is especially critical in color temperature and white balance adjustments. 6-1-1 (d) SIGNAL Analog, 0.714 Vp-p positive at 75 ohm, internal termination Sync: Separate (TTL level negative/positive) 6-1-1 (e) SCANNING FREQUENCY Horizontal: 30 kHz to 70 kHz (Automatic) Vertical: 50 Hz to 160 Hz (Automatic) Unless otherwise specified, adjust at the 16Ó/17Ó: 1024 x 768 mode (68 kHz/85 Hz), 15Ó: 800 x 600 mode (54 kHz/85 Hz) signals. Refer to Table 3-1 on page 3-3. 6-1-2 Required Equipment The following equipment may be necessary for adjustment procedures: 6-1-2 (a) DISPLAY CONTROL ADJUSTMENT 1. Non-metallic (Ð) screwdriver: 1.5 mm Non-metallic (Ð) screwdriver: 3 mm 2. Philips (+) screwdriver: 1.5 mm 3. Non-metallic hexkey: 2.5 mm 4. Digital Multimeter (DMM), or Digital Voltmeter (DVM) 5. Signal generator, or Computer with a video board that uses the ET-4000 chipset (strongly recommended if using Samsung DM 200 software) and that displays: 1024 x 768 @ 85 Hz, or 800 x 600 @ 85 Hz (minimum). 6. Personal computer 7. Required software: Softjig.exe from Samsung which includes the cg17e.c data file Samsung DM200, or DisplayMate for Windows from Sonera Technologies 8. Interface Board Ver. 2.0 Code No. BH81-90001K 9. Parallel communications cable (25-pin to 25-pin); Code No. BH81-90001H 10. Signal cable (15-pin to 15-pin cable with additional 3-pin connector); Code No. BH81-90001J 11. 5 V DC adapter, not supplied Note: SoftJig AssÕy (includes items 8, 9 and 10) Code No. BH81-90001L 6-1-2 (b) COLOR ADJUSTMENTS 1. All equipment listed in 6-1-2 (a), above 2. Color analyzer, or any luminance measurement equipment CHB5**7L/6**7L/7**7L 6-1 6 Alignment and Adjustments 6-1-3 Connecting the SoftJig Connect the monitor to the signal generator and/ or PC as illustrated in
File name CHB7707L_XAA.0000051600.E.09.pdf

7 Troubleshooting 7-1 Parts Level Troubleshooting Notes: 1. If a picture does not appear, fully rotate the brightness and contrast controls clockwise and reinspect. 2. Check the following circuits. · No raster appears: Power circuit, Horizontal output circuit, H/V control circuit, and H/V output circuit. · High voltage develops but no raster appears: Video output circuits. · High voltage does not develop: Horizontal output circuits. 7-1-1 No Power Supply Check and replace FH1, D602, D603, D604, D605. WAVEFORMS 1 544 V (IC601, #1) Chirping noise exists? Yes Check and replace IC601. No Repeating start? Yes Check and replace D607. CH1 P-P = 544 V CH1 RMS = 332.4 V No 1 IC601 Pin 1 waveform is right? No Check and replace OP601, IC603, D610, D624, D609. Yes OP601, IC603, D610 are right? No Replace parts and verify voltages. Yes Normal operation No Replace Main board. Yes Verify voltages. Yes Done. CHB5**7L/6**7L/7**7L 7-1 7 Troubleshooting 7-1-2 DPMS Failure Check signal source H/V sync video level. WAVEFORMS 2 544 V (IC601, #1) Make No H/V sync (power off mode) CH1 P-P = 544 V CH1 RMS = 332.4 V LED blinks No Check IC201 Pin 20. Yes +12 V line off No Check IC201 Pin 41. Yes Q622, Q621 Base driving voltage exists? Yes 2 No Check IC201 Pin 40. Check and replace Q622, Q621. IC601 Pin 1 output voltage exists? Yes Done No Refer to 7-1-1 No Power Supply. 7-2 CHB5**7L/6**7L/7**7L 7 Troubleshooting 7-1-3 H_Deflection Failure Does PWM output signal appear at Pin 26 (H_out) of IC401? Yes No Does DC 5 V appear at Pin 32 of IC401? Yes No Check 5 V, 12 V line. 3 WAVEFORMS Check IC401. 3 8.80 V (IC401, #26) Does 12 Vp-p signal appear at Emitters of Q441 and Q442? Yes 4 No Check Q441 and Q442. CH1 P-P = 8.80 V CH1 RMS = 6.176 V 4 104.0 V (T401, #1) Does 110 Vp-p signal appear at Pin 5 of T401? No No Check Q443. Check CN443, D442, Q443 and T402. CH1 P-P = 104.0 V CH1 RMS = 51.84 V 7-1-4 S Correction Failure Check S1 ~ S3 signal. S1~S3 signals are right at each frequency block? Yes Check and replace Q461 ~ Q463, C461 ~ C465. No Check and replace IC201. CHB5**7L/6**7L/7**7L 7-3 7 Troubleshooting 7-1-5 H_Lin. Failure IC201 Pin 33 voltage varies with different H_Lin. DAC values? Yes IC302 Pin 14 voltage varies with different H_Lin. DAC values? Yes Check Q471, Q472, T403. No Check +12 V, ­10 V line. Check some parts around IC302. No Replace IC201. 7-1-6 Invariable H_Size IC401 Pin 28 voltage varies with different B_Out DAC values? Yes Q433 Gate output duty varies with different B_Out DAC values? No Check some parts around Q433, IC401 Pin 28. No Check and replace IC401. 7-1-7 Abnormal H_Size IC401 Pin 24 output duty varies with different B+ offset DAC values? Yes 5 No Check and replace IC201. Check some parts IC201 Pins 12 and 16, IC201 Pin 23. WAVEFORMS 5 26.4 V (T402, #10) T402 Pin 10 waveform is right? No Check and replace T402. CH1 P-P = 26.4 V CH1 RMS = 7.02 V Yes Check some parts around D432. 7-4 CH
File name CHB7707L_XAA.0000051600.E.12.pdf

9 Electrical Parts List 9-1 Main PCB Parts Loc. No. Coordinates (X,Y) BD311 BD312 BD401 BD402 BD441 BD501 BD601 BD621 BD622 C201 C202 C203 C204 C206 C207 C209 C212 C213 C214 C216 C217 C218 C219 C221 C302 C303 C304 C306 C307 C308 C309 C311 C312 C313 C314 C316 C317 C321 C331 C332 C401 C402 C403 C404 C405 23.7 40.4 50.9 74.7 192.0 27.6 195.3 180.2 215.4 57.6 65.9 35.6 40.6 48.2 44.0 23.0 23.3 74.4 57.1 63.2 55.3 55.2 60.5 63.6 112.3 96.3 119.9 119.8 88.8 97.3 113.7 42.7 32.5 25.2 31.5 121.7 118.7 91.6 212.6 264.2 67.2 58.1 49.1 54.2 158.3 140.0 122.7 105.5 139.8 229.9 193.2 45.6 107.7 106.6 63.4 64.7 77.7 80.3 71.4 71.4 63.9 79.0 35.5 31.4 31.4 94.6 99.6 92.2 60.4 71.9 82.9 48.3 96.4 27.3 19.8 59.5 137.3 138.7 135.8 128.1 159.8 65.8 28.5 224.7 238.3 159.8 159.6 159.6 168.7 234.7 Code No. 3301-000011 3301-000011 3301-000011 3301-000011 3301-000011 3301-000011 3301-000011 3301-000011 3301-000011 2401-000028 2401-000025 2401-000050 2202-002009 2201-000010 2201-000010 2401-002299 2401-002299 2401-000027 2401-000027 2201-000234 2202-002009 2401-000050 2201-000144 2201-000138 2301-000287 2401-000037 2401-000849 2401-000023 2201-000163 2201-000163 2305-000004 2301-000168 2305-000001 2202-002008 2401-000031 2401-000031 2301-000020 2401-001016 2301-000014 2301-001027 2301-000231 2301-000016 2202-000003 2301-000016 2201-000469 Description MAG-CORE,FERRITE,BEAD MAG-CORE,FERRITE,BEAD MAG-CORE,FERRITE,BEAD MAG-CORE,FERRITE,BEAD MAG-CORE,FERRITE,BEAD MAG-CORE,FERRITE,BEAD MAG-CORE,FERRITE,BEAD MAG-CORE,FERRITE,BEAD MAG-CORE,FERRITE,BEAD C-AL C-AL C-AL C-CERAMIC,MLC-AXIAL C-CERAMIC,DISC C-CERAMIC,DISC C-AL C-AL C-AL C-AL C-CERAMIC,DISC C-CERAMIC,MLC-AXIAL C-AL C-CERAMIC,DISC C-CERAMIC,DISC C-FILM,PEF C-AL C-AL C-AL C-CERAMIC,DISC C-CERAMIC,DISC C-FILM,MPEF C-FILM,PEF C-FILM,MPEF C-CERAMIC,MLC-AXIAL C-AL C-AL C-FILM,PEF C-AL C-FILM,PEF C-FILM,PEF C-FILM,PEF C-FILM,PEF C-CERAMIC,MLC-RADIAL C-FILM,PEF C-CERAMIC,DISC Specification 1.2UH,3.5_5.7MM,10 OHM 1.2UH,3.5_5.7MM,10 OHM 1.2UH,3.5_5.7MM,10 OHM 1.2UH,3.5_5.7MM,10 OHM 1.2UH,3.5_5.7MM,10 OHM 1.2UH,3.5_5.7MM,10 OHM 1.2UH,3.5_5.7MM,10 OHM 1.2UH,3.5_5.7MM,10 OHM 1.2UH,3.5_5.7MM,10 OHM 10uF,20%,50V,GP,5x11mm,5mm,TP 100uF,20%,16V,GP,5mm,TP 10uF,20%,16V,GP,5x11mm,2mm,TP 100nF,+80-20%,50V,Y5V,2.3X3.0 33pF,5%,50V,NPO,5x3.5,5,TP 33pF,5%,50V,NPO,5x3.5,5,TP 4.7uF,20%,50V,GP,5x7,5,TP 4.7uF,20%,50V,GP,5x7,5,TP 4.7uF,20%,50V,GP,5mm,TP 4.7uF,20%,50V,GP,5mm,TP 150pF,5%,50V,NPO,10x3.5,5,TP 100nF,+80-20%,50V,Y5V,2.3X3.0 10uF,20%,16V,GP,5x11mm,2mm,TP 100pF,5%,50V,NPO,8.0X4.0,5,TP 100pF,10%,50V,Y5P,4.0X4.0,2.5 5.6nF,5%,100V,2A,5P 470uF,20%,16V,GP,5mm,TP 220uF,20%,35V,GP,5mm,TP 1uF,20%,50V,GP,5mm,TP 10nF,+80-20%,50V,Y5V,6.5x5mm,2 10nF,+80-20%,50V,Y5V,6.5x5mm,2 220nF,10%,100V,12.7x16,5mm,TP 150nF,5%,100V,11.5x19mm,7.5mm 470nF,10%,63V,6.0X15.5X7.5,5mm 10nF,+80-20%,50V,Y5V,2.3X3.0 47uF,20%,16V,GP,5mm,TP 47uF,20%,16V,GP,5mm,TP 27nF,5%,100V,7.3x4x12.5mm,5mm 3.3uF,20%,50V,BP,6x11mm,5mm,TP 6.8nF,5%,100V,5.8x12.5mm,5mm,T 15nF,10%,250V,9.5x12x4.
File name CHB7707L_XAA.0000051600.E.13.pdf

CHB5**7L VIDEO BOARD VIDEO OUTPUT IC102(LM2407) CRT SOCKET BOARD RGB R G B - CUTOFF QR01, QR02, QG01, QG02, QB01, QB02 G1 CRT S/Cable INPUT & Video Gain Control SOCKET H-SYNC, V-SYNC HEATER MAIN BOARD H-SYNC,V-SYNC VER. OUTPUT (2N3904)IC301 FRONT CONTROL BOARD H/V PWM CONTROL IC501 TL494CN VER. - DY CN301 FOCUS1 SCREEN CHB5**7L/6**7L/7**7L H/V FBT T501 ­210V H-SYNC1 V-SYNC1 SDA SCL H-SIZE RGB Video Pre-Amp IC101(KA2506) 10 Block Diagrams OSD DRIVE CONTROL IC104(MC4320, MC4322 MC4326) HOR./VER. OSC PROCESSOR (TDA9109S) MENU EXIT BRIGHTNESS CONTRAST ENTER High Volt.-DRIVE Q503 H/V OUTPUT (SSP6N90) Q504 H.D.T T401 I-SENSE REGIN HOR.-DRIVE (KSP44)Q443 MICOM (BD24) IC202 +30V LED POWER +12V ACL CIRCUIT VER.-BLANKING (KSC945) Q331 HOR.DEF. STEP-UP IFR630 HOR.OUT (KSC5088) Q447 HOR.DY CN441~3 G1 CONTRAST CONTROL CONTRAST CONTROL EPROM (24LC04) IC202 TILT +75V +46V +13V -10V +7V TO VIDEO +12V V-MUTE S-CORRECTION PS-1 (SUSPEND) PS-2 (POWER-OFF) HOR.LIN. BRIGHTNESS CONTROL PQ12RD11 +12V REGULATOR PS-1,PS-2 (FROM Micom) VER. OUTPUT, TILT & H_Lin. control CRT HEATER CRT HEATER -210V ( FROM FBT) TO D - COIL ON THE CRT Power PWM Control (KA2S0680) IC601 DEGAUSSING BLOCK RL601 SWITCHING TRANS. T601 BRIGHTNESS CONTROL AC-INLET SOCKET CN601 RECTIFIER (1N5397GP) D602,D603, D604,D605 LINE FILTER L601 POWER-OFF MODE CONTROL (Q622) PS-2 10-1 H-SYNC, V-SYNC HEATER MAIN BOARD H-SYNC,V-SYNC VER. OUTPUT IC301 FRONT CONTROL BOARD H-SYNC1 V-SYNC1 SDA SCL H-SIZE VER. - DY CN301 High Voltage CONTROL IC501 FOCUS1,2 SCREEN 10-2 CRT VIDEO OUTPUT CRT SOCKET BOARD RGB IC102(LM2407T) SOCKET R G B - CUTOFF SK1 CONTROL G1 VIDEO BOARD RGB CHB6**7L 10 Block Diagrams S/Cable INPUT Video Pre-Amp IC101(KA2506) OSD DRIVE CONTROL IC104(MC4320, MC4322 MC4326) H/V ­210V FBT T501 +30V HOR./VER. OSC PROCESSOR MICOM (TDA9109S) IC401 High Volt.-DRIVE Q503 MENU EXIT BRIGHTNESS CONTRAST ENTER I-SENSE REGIN HOR.-DRIVE Q443 IC201 High Voltage CONTROL OUTPUT HOR.- OUT Q447 LED POWER HOR.-DY CN441 CN443 ACL CIRCUIT +12V DDC IC (24LC21A) IC203 VER.-BLANKING GENERATOR (Q301) V-MUTE S-CORRECTION LED PS-1 (SUSPEND) PS-2 (POWEROFF) TILT SWITCHING TRANS. T601 -10V +7V RECTIFIER (D602, D603, D604,D605) +46V +13V PWM CONTROL & SWITCHING FET IC601 +75V H_Linearity HOR.-DEF. STEP-UP 2 EPROM (24LC04B) IC202 H-DEF. TRANS T402 G1 TO VIDEO +12V +12V REGULATION VER. OUTPUT, TILT & H_LIN. CONTROL CRT HEATER HEATER TO D - COIL ON THE CRT DEGAUSSING BLOCK RL601 G1 VOLTAGE CONTROL -210V ( FROM FBT) LINE FILTER AC-INLET SOCKET CN601 L601 POWER-OFF MODE CONTROL (Q621, Q622) +13V To Audio Stand CHB5**7L/6**7L/7**7L PS-2 VIDEO BOARD VIDEO OUTPUT IC102(LM2407) CRT SOCKET BOARD RGB R G B - CUTOFF QR01, QR02, QG01, QG02, QB01, QB02 G1 CRT CHB7**7L S/Cable INPUT & Video Gain Control SOCKET H-SYNC, V-SYNC HEATER MAIN BOARD H-SYNC,V-SYNC VER. OUTPUT (2N3904)IC301 FRONT CONTROL BOARD VER. - DY CN301 H/V PWM CONTROL IC501 TL494CN FOCUS1 SCREE
File name CHB7707L_XAA.0000051600.E.14.pdf

11 PCB Diagram 11-1 Semiconductor Lead Identification PARTS TYPE NO. REF. NO. PARTS TYPE NO. REF. NO. PARTS TYPE NO. REF. NO. SDS06U15OS D442 KSC5088 Q447 TDA9302H IC301 K A B C E 1 7 KSC945 KSA733 2N3906 2N3904 KSP44 E B C Q201, Q331, Q402, Q624 Q401, Q501, Q506 Q432, Q509 Q103, Q431, Q441, Q503 Q443 Q601 Q507 Q321, Q471 I G O KA431 IC603 LM2407 IC102 R A K 1 11 KSC1008 2N6502 KSD1616 2N5551C KSB1116 KA7805 IC604 4 1 LTV817M-SM QP601 QR01, QG01, QB01 24LC04 Q322, Q472, Q621 QR02, QG02, QB02 1 4 IC202 IC203 E C 2N2401C B PQ12RD11 IC602 8 1 24LC21A KSB772 Q623 1 : Vin, 2 : Vout, 3 : GND, 4 : Vcc TL494 16 1 IC501 IC104 MC4320P E C B KA2S0680 IRF630 IRF634A G D S IC601 28 1 KA2506 IC101 Q433, Q461 5 Q502 1 1 : Drain, 2 : GND, 3 : Vcc, 4 : F/B, 5 : Sync TDA9109/S 32 1 IC401 IRFR/U230A G D S Q462, Q463 SSS6N90A Q504 BD24 42 IC201 G D S 1 CHB5**7L/6**7L/7**7L 11-1 11 PCB Diagrams Memo 11-2 CHB5**7L/6**7L/7**7L
File name CHB7707L_XAA.0000051600.E.15.pdf

12 Wiring Diagram MAIN PCB CN12 CRT SOCKET FOCUS1 (WHT) FOCUS2 (RED) CRT SOCKET PCB G2 (17") (15") H+ (RED) H+ 1 NC (BLUE) H- 2 (YEL) V+ 3 H­ NC (BROWN)V- 4 (YEL)V+ 1 NC 2 (Brown)V ­ 3 1 2 3 4 1 2 3 (15") (17") H + H + CN441 H­ NC CN442 V + H­ CN443 NC CN446 V­ V + NC V­ CN301 CN102A FBT 15" ONLY FOCUS (WHT) CN103 R-OUT GND G-OUT GND B-OUT GND 6.3 V G1 1 2 3 4 5 6 7 8 1 2 V+ V­ 1 2 3 4 5 6 7 8 9 DEGAUSSING COIL AC AC 1 2 1 2 AC AC CN602 CN603 1 AC INPUT NC AC INPUT LINE FILTER 2 3 CN601 GND CLAMP HS_IN VS_IN DDC_DATA DDC_CLK S_RASTER IICDATA IICCLK GND GND ACL AFC 5V VS_OUT 12 V 70 V 6.3 V GND NC G1 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 GND HS_OUT HS_IN VS_IN DDC_DA DDC_CL S_RAS SDA SCL GND GND ACL AFC 5V VS_OUT 12 V 70 V 6.3 V GND NC G1 GND VIDEO PCB CN104 NC R-OUT GND G-OUT GND B-OUT GND 6.3 V G1 CN103 CN101 SIGNAL CABLE 15" TSB CDT ONLY CN_TCO TCO + NC TCO ­ (GND) 1 2 3 1 2 3 TCO + NC TCO ­ (GND) CN_TILT R GND G GND B GND S_RAS GND H GND V DA CL 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 R_IN GND_R G_IN GND_G B_IN GND_B S_RASTER GND H_SYNC GND V_SYNC SDA SCL 15 PIN D-SUB refer to pin assignment of product spec. TILT + 1 NC 2 TILT ­ 3 1 TILT+(WHT) 2 NC TILT­(BLK) 3 CHB5**7L/6**7L/7**7L 12-1
File name CHB7707L_XAA.0000051600.E.16.pdf

13 Schematic Diagrams 13-1 SMPS Part Schematic Diagram CN603 CN602 CN606 R630 1 2 T601 R633 C610 CN_PFC SW601 R609 C619 R634 Power Line 13-1 CHB5**7L/6**7L7**7L 13 Schematic Diagrams Table 13-1. IC601 (KA2S0680) pin # MODES 800 x 600 / 85 Hz 640 x 480 / 60 Hz 1.05 GND ­33.2 mV ­57.0 mV ­42.0 mV 10.30 GND ­34.0 mV ­48.0 mV ­46.0 mV 1 544 V (IC601, #1) 2 544 V (IC601, #1) 1 2 3 4 5 CH1 P-P = 544 V CH1 RMS = 51.84V CH1 P-P = 544 V CH1 RMS = 51.84V Unit: Vrms CHB5**7L/6**7L/7**7L 13-2 13 Schematic Diagrams 13-2 Micom Part Schematic Diagram R249 IC201 18 SW200 Power Line Signal Line 13-3 CHB5**7L/6**7L7**7L 13 Schematic Diagrams Table 13-2. IC201 pin # pin # MODES 800 x 600 / 85 Hz 640 x 480 / 60 Hz 4.370 5.080 ­1.810 mV 5.080 5.085 2.450 2.123 NC 14.53 mV 13.361 16.451 mV 5.084 NC ­1.85 mV 5.066 5.084 ­3.650 mV 52.28 mV 10.02 mV 5.039 1.629 4.706 5.079 ­1.970 mV 5.080 5.085 2.450 2.121 NC 13.31 13.31 13.31 5.090 NC ­2.00 mV 5.067 5.085 ­3.540 mV 51.800 mV 8.01 mV 5.042 1.630 MODES 800 x 600 / 85 Hz 640 x 480 / 60 Hz 5.079 2.511 4.700 mV 3.633 3.517 NC NC NC GND 0.529 NC 3.998 NC 3.837 4.751 8.430 5.079 5.079 5.031 5.073 0.298 5.081 4.054 3.170 mV 3.635 3.519 NC NC NC GND 0.528 NC 5.035 NC 3.840 4.465 6.310 5.082 5.082 5.034 5.076 4.334 18 5.00 V (IC201, #6, 7) 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 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 CH1 P-P = 5.00 V CH1 RMS = 2.966 V Unit: Vrms CHB5**7L/6**7L/7**7L 13-4 13 Schematic Diagrams 13-3 High Voltage Part Schematic Diagram R548 T502 C554 46V SK501 C556 R553 R554 Q551 C552 R551 R552 C551 C519 D508 14 13 C553 R556 T501 R550 C518 46V R524 R532 10 11 R503 9 Power Line Signal Line 13-5 CHB5**7L/6**7L7**7L 13 Schematic Diagrams Table 13-3. IC501 (TL494CN) pin # MODES 800 x 600 / 85 Hz 640 x 480 / 60 Hz 4.859 4.855 1.753 21.80 mV 0.910 3.485 GND 11.834 3.035 3.034 11.834 11.834 GND 4.896 5.334 4.901 4.868 4.867 2.471 12.40 mV 1.245 3.485 GND 11.836 1.458 1.458 11.836 11.836 GND 4.896 5.336 4.895 9 1.14 V (IC501, #3) 10 12.16 V (IC501, #5) 11 9.12 V (Q502, Gate) 13 50.8 V (T502, #6) 14 360 V (T502, #1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 CH1 P-P = 1.14 V CH1 RMS = 837 mV CH1 P-P = 12.16 V CH1 RMS = 6.376 V CH1 P-P = 9.12 V CH1 RMS = 3.736 V CH1 P-P = 50.8 V CH1 RMS = 16.56 V CH1 P-P = 360 V CH1 RMS = 114.4 V Unit: Vrms CHB5**7L/6**7L/7**7L 13-6 13 Schematic Diagrams 13-4 H/V OSC & Vertical Parts Schematic Diagram R545 R542 R541 R540 8 CN302 3 V_DY R303 R312 6 12 R406 R407 7 C413 R418 C417 R414 C412 R416 R417 D404 R411 R412 C414 Q402 R413 D403 Power Line Signal Line 13-7 CHB5**7L/6**7L7**7L 13 Schematic Diagrams Table 13-4. IC301 (TDA9302H) pin # pin # MODES 800 x 600 / 85 Hz 640 x 480 / 60 Hz 1.221 13.368 ­10.366 ­11.013 ­8.0 mV 13.111 1.225 1.223 13.314 ­10.435 ­10.913 ­5.0 mV 12.936 1.225 Table 13-5. IC302 (LM324N) MODES 800 x 600 / 85 Hz 640 x 480 / 60 Hz 2.264 1.271 1.270 11.847 4.7



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