Samsung DP14LS/LT DP15LS/LT free download

File name DP14LT7N_ING.IN050.1.01.pdf

COLOR MONITOR DP14LS DP14LT DP15LS DP15LT SERVICE COLOR MONITOR Manual CONTENTS 1. Precautions 2. Product Specifications 3. Operating Instructions 4. Disassembly & Reassembly 5. Alignment & Adjustments 6. Troubleshooting 7. Exploded View & Parts List 8. Electrical Parts List 9. Block Diagram 10. Wiring Diagram 11 Schematic Diagrams Samsung Electronics Co., Ltd. April 1999 Printed in Korea Code No.: BH68-00128A

File name DP14LT7N_ING.IN050.1.02.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 unitХs 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:Damaged IC202 may cause excessive x-ray emissions. 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: This monitor does not need to adjust high voltage, high voltage step is saved at IC202, adjusting this high voltage to 24.5±0.5 kV - 14У, 25.0±0.5 kV - 15У. 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. 4. DEVICE UNDER TEST TEST ALL EXPOSED METAL SURFACES LEAKAGE CURRENT TESTER 5. 2-WIRE CORD 6. ALSO TEST WITH PLUG REVERSED (USING AC ADAPTER PLUG AS REQUIRED) EARTH GROUND Figure 1-1. Leakage Current Test Circuit 7. 1-1-4 P

File name DP14LT7N_ING.IN050.1.04.pdf

2 Product Specifications 2-1 Specifications Item Picture Tube: Description 14-Inch (36 cm); 13.2-Inch (33.5 cm) viewable, 90° Deflection, 15-Inch (38 cm); 13.8-Inch (35 cm) viewable, flat-face tube, 90° Deflection, 0.28 mm Dot pitch, Semi-tint, Non-glare, Antistatic silica coating, Invar shadow mask Horizontal: 30 kHz to 55 kHz (Automatic) - 14" / 30 kHz to 61 kHz (Automatic) - 15" Vertical: 50 Hz to 120 Hz (Automatic) Unlimited colors Horizontal : 1024 Dots Vertical : 768 Lines Analog, 0.7 Vp-p positive at 75 , internally terminated Separate Sync : TTL level positive/negative 14" : 65 MHz, 15" : 80 MHz 14" 255 mm ± 4 mm (4:3 ratio) 191 mm ± 4 mm AC 90 to 264 Volts, 60 Hz/50 Hz ± 3 Hz 75 Watt (Max.) 14" 13.70 x 14.65 x 14.49 Inches (348 x 372 x 368 mm) 16.61 x 18.11 x 15.35 Inches (422 x 460 x 390 mm) 14" : 23.4 lbs (10.6 kg) / 26.9 lbs (12.2 kg) 15" : 26.5 lbs (12.0 kg) / 31.5 lbs (14.3 kg) Operating Temperature : Storage Temperature : 32°F to 104°F (0°C to 40°C) Humidity : 10 % to 80 % -4°F to 113°F (-20°C to 45°C) Humidity : 5 % to 95 % 15" 14.25 x 15.12 x 15.12 Inches (362 x 384 x 384 mm) 17.87 x 19.57 x 17.52 Inches (454 x 497 x 445 mm) 15" 267 mm ± 4 mm (4:3 ratio) 200 mm ± 4 mm Scanning Frequency Display Colors Maximum Resolution Input Video Signal Input Sync Signal Maximum Pixel Clock Active Display Horizontal Vertical Input Voltage Power Consumption Dimensions Unit (W x D x H) Carton (W x D x H) Weight (Net/Gross) Environmental Considerations · This above Models complies with SWEDAC (MPR II) recommendations for reduced electromagnetic fields. · Designs and specifications are subject to change without prior notice. DP14L*/DP15L* 2-1 2 Product Specifications 2-2 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 2-1) 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 5 15 Figure 2-1. Male Type 2-2 DP14L*/DP15L* 2 Product Specifications 2-3 Timing Chart This section of the service manual describes the timing that the computer industry recognizes as standard for computer-generated video signals. Table 2-1. Timing Chart Mode IBM 720/70 Hz 720 x 400 31.469 31.777 3.813 1.907 25.422 0.636 70.087 14.268 0.064 1.080 12.711 0.413 28.322 640/60 Hz 640 x 480 31.469 31.778 3.813 1.907 25.422 0.636 59.940 16.683 0.064 1.048 15.253 0.318 25.175 640/75 Hz 640 x 480 37.500 26.667 2.032 3.810 20.317 0.508 75.000 13.333 0.080 0.427 12.800 0.027 31.500 640/85 Hz 640 x 480 43.269 23.111 1.556 2.222 17.778 1.556 85.008 11.764 0.069 0.578 11.093 0.023 36.000 VESA 800/75 Hz 800 x 600 46.875 21.333 1.616 3.232 16.162 0.323 75.000 13.333 0.064 0.448 12.800 0.021 49.500 800/85 Hz 800 x 600 53.674 18.631 1.138 2.702 14.222 0.569 85.061 11.756 0.056 0.503 11.179 0.019 56.250 1024/60 Hz 1024 x 768 (14") 48.363 20.677 2.092 2.462 15.754 0.369 60.004 16.666 0.124 0.600 15.880 0.062 65.000 1024/75 Hz 1024 x 768 (15") 60.023

File name DP14LT7N_ING.IN050.1.05.pdf

3 Operating Instructions 3-1 Front View and Control Table 3-1. Front Panel Controls Location 1 2 3 4 5 6 7 1 2 Symbol Description Power Button Power Indicator LED Horizontal Position Button Vertical Position Button Horizontal Size Button Vertical Size Button Adjustment Buttons Side Pincushion Button Trapezoid Button Brightness Control Contrast Control 8 9 14 13 12 17 16 15 10 11 12 13 14 15 + + + + + + + + Parallelogram V-Linearity Pinbalance Button Degauss Recall User Delete Tilt (Option: 15") V-Moire 3 4 18 5 19 6 7 8 9 10 11 16 17 18 19 Figure 3-1. Front Control Panel DP14L*/DP15L* 3-1 3 Operating Instructions Memo 3-2 DP14L*/DP15L*

File name DP14LT7N_ING.IN050.1.06.pdf

4 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the DP14L*/DP15L* monitors. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 4-1 Disassembly Cautions:1. Disconnect the monitor from the power source before disassembly. 2. To remove the Rear Cover, you must use the special opening jig tool. 4-1-1 Cabinet Disassembly 1. With a pad beneath it, stand the monitor on its front with the screen facing downward and the base closest to you. Make sure nothing will damage the screen. 2. Remove the Stand from the monitor. (Refer to Stand manual) 3. Incline the monitor by lifting the rear of the monitor. 5. Squeeze the hold-snap on bottom of the monitor using your hand. Figure 3 6. Insert the Opening jig into the groove then release the hold-snap. Figure 1 4. Push the Opening jig each groove along the top of the monitor till it makes a ТttakУ sound. (2 grooves : Left and Right, Make sure each snap is disengaged.) Figure 4 Figure 2 DP14L*/DP15L* 4-1 4 Disassembly and Reassembly 7. When the hold-snap release, lift the Rear Cover slightly to make sure it doesnХt reengage while you release the snap on the other side. Figure 7 Figure 5 8. In a similar manner, Release the hold-snap on the opposite side. 9. Pull the Rear Cover up off the monitor. Figure 8 4-1-2 Removing the CRT Socket PCB 1. Complete all previous steps. 2. Disconnect the CRT and Main PCB ground wires between the CRT Socket PCB and Shield Cover. (DP14LS only) 3. Lift up the Video Spring and remove the CRT Socket PCB from the CRT. Figure 6 10. Using pinch-nose pliers or ling-nose pliers, acrefully disconnect the Anode Cap from the CRT. Warning: Do not touch the Anode contact on the CRT (High Voltage may remain). If the hold-snap on the bottom of the Front Cover is broken, secure the cabinet by applying a 4x16 screw in the extra holes on each side of the cabinet. Figure 9 4. Disconnect all connectors on the CRT Socket PCB. 5. Using a solder iron, disconnect Ground (G2) on the back of the Video Shield and remove the Shield Cap. 6. Remove the screw on the front of the Shield Socket. 7. Desolder the 4 tabs on the CRT Socket PCB and remove Shield. 8. Place the Video PCB on a flat, level surface that is protected from static electricity. DP14L*/DP15L* Note : 4-2 4 Disassembly and Reassembly 4-1-3 Removing the Main PCB 1. Complete all previous steps. 2. Disconnect the Degaussing Coil at GT601 and GT602 on the Main PCB. 3. Disconnect all easily accessible ground wires on the Main PCB and Bottom Chassis. 4. Disconnect the DY connector at the CN303 connector on the Main . 5. Using the jig, release the snaps (2) connecting the Front Cover and Main PCB then lift up the Bottom to separate the two Shield. 6. Remove the screws on the back and along each side of the Bottom Chassis. 7. Carefully lift the Main PCB AssХy and remove the remaining ground wires. 8. Place the

File name DP14LT7N_ING.IN050.1.07.pdf

5 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). 5-1 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. 5-1-1 Before Making Adjustments 5-1-1 (a) ORIENTATION When servicing, always face the monitor to the east. 5-1-1 (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. 5-1-1 (c) WARM-UP TIME The monitor must be on for 30 minutes before starting alignment procedures. Warm-up time is especially critical in Color Temperature and White Balance adjustments. 5-1-1 (d) SIGNAL Analog, 0.7 Vp-p positive at 75 ohm, internal termination Sync: Separate (TTL level negative/positive) 5-1-1 (e) SCANNING FREQUENCY Horizontal: 30 kHz to 55 kHz (automatic) 14У 30 kHz to 61 kHz (automatic) 15У Vertical: 50 Hz to 120 Hz (automatic) Unless otherwise specified, adjust at the 800 x 600 mode (H : 53.7 kHz, V: 85 Hz) -14У/15У signals. Refer to Table on page 2-3. 5-1-1 (f) +B 13 V LINE CHECK No beam Contrast: Maximum Brightness: Maximum Check the DC 13 V ± 0.2 V at Cathode of D616 Point and GND. 5-1-1 (g) HIGH VOLTAGE CHECK No beam Contrast: Maximum Brightness: Maximum Check the high voltage to 24.5 ± 0.5 kV - 14У, 25 ± 0.5 kV - 15У at anode and GND. 5-1-1 (h) CENTER RASTER Adjust VR501 so that the back raster comes to the center when you apply a signal of 60 kHz/75 Hz - 15У . 5-1-1 (i) BRIGHTNESS AND CONTRAST Unless otherwise specified, adjust brightness and contrast buttons: Brightness: Maximum (press Е button until the LED is blink) Contrast: Maximum (press Е button until the LED is blink) 5-1-2 Required Equipment The following equipment may be necessary for adjustment procedures: 5-1-2 (a) DISPLAY CONTROL ADJUSTMENT 1. Non-metallic (Р) screwdriver: 1.5 mm Non-metallic (Р) screwdriver: 3 mm 2. Philips (+) screwdriver: 1.5 mm 3. Non-metallic hexkey: 2.5 mm 4. Digital Multimeter (DMM), or Digital Voltmeter (DVM) DP14L*/DP15L* 5-1 5 Alignment and Adjustments 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: 800 x 600 @ 85 Hz, or 800 x 600 @ 75 Hz (minimum). 6. Personal computer 7. Required software: Softjig.exe from Samsung, Sams

File name DP14LT7N_ING.IN050.1.09.pdf

6 Troubleshooting 6-1 General 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. 6-1-1 No Picture Check signal cable connection, H/V Sync input. Check Timing mode (14": 30~55kHz, 15": 30~61kHz). Check Cont, Bright key (all Max) and Screen VR (G2). Check key components of secondary part. : D406, D407, D408, D515, Q402, Q410, Q504, Rectifier diodes (D608 ~ D612), IC101 (Vcc~GND) Check key components of primary part. : D601 ~ D607, FH601, IC601, TH602 Refer to 6-2-16 No Video. Check SW601 (Power key) Refer to 6-2-1 No Power. Refer to 6-2-3 No Raster and 6-2-12 High Voltage Failure. Refer to 6-2-17 Micom Failure. Refer to 6-2-13 I2C Failure. DP14L*/DP15L* 6-1 6 Troubleshooting 6-1-2 Shut Down Check X-ray protection circuit. : D502, D503, R510 Check key components of secondary part. : D406, D407, D408, D515, IC101 (Vcc ~ GND) Q402, Q504, Rectifier diodes Check and replace IC601. Refer to 6-2-1 No Power. Refer to 6-2-3 No Raster and 6-2-12 High Voltage Failure. Refer to 6-2-17 Micom Failure. Refer to 6-2-13 I2C Failure. 6-2 DP14L*/DP15L* 6 Troubleshooting 6-1-3 No Video or Missing Colors Check signal cable connection, H/V Sync input. Check Timing mode (14": 30~55kHz, 15": 30~61kHz). Check Cont, Brit key (all Max) and Screen VR (G2). WAVEFORMS 19 46.4 V (SK103, G) 22 Are 0.7Vp-p video input on CN202_2 R, G, B? Yes No Check signal cable and generator. CH1 P-P = 46.4 V CH1 RMS = 38.16 V 22 1.016 V (CN202_2, #2,4,6) 19 Are proper waveform on SK103's R, G, B cathode? Yes No Refer to 6-2-16 No Video. CH1 P-P = 1.016 V CH1 RMS = 174.4 mV Is G2 and heater voltage OK? No Check and replace SK103 and some parts around it. Yes Change CRT and replace it. 6-1-4 Visible Retrace Check white balance adjustment. WAVEFORMS 17 35.2 V (SK103, G1) Is G2 voltage (Screen VR) OK? No Adjust Screen VR to 0.4~0.6F/L (back raster) at cont, bright all max. CH1 P-P = 35.2 V CH1 RMS = 80.84 V Yes 25 25 4.96 V (IC201, #30) Is V_sync input on Q301 base? No Check V_sync input line. Yes 17 Is proper G1 pulse on SK103's G1 pin? Yes Check and replace CRT. No Check C306, C506, D504 Q301, Q501 and around parts. CH1 P-P = 4.96 V CH1 RMS = 350 mV DP14L*/DP15L* 6-3 6 Troubleshooting 6-1-5 Unsynchronized image Check the connection of signal cable. 24 Are H/V sync input on IC201's Pins 30 and 31? 25 Yes No Check H/V sync input line. No Refer to 6-2-17 Micom Failure. 26 Are H/V sync input on IC401's Pins 1 and 2? 27 Yes No Check H/V sync input line. No Check and replace IC201. WAVEFORMS 24 5.28 V (IC201, #31) 25 4.96 V (IC201, #30) Refer to 6-2-12 High Voltage Failure. Yes Check a

File name DP14LT7N_ING.IN050.1.12.pdf

8 Electrical Parts List 8-1 Main PCB Parts Loc. No. BD402 BD403 BD406 BD501 BD502 BD601 BD602 BD603 BD604 C201 C203 C204 C208 C209 C210 C211 C212 C213 C214 C301 C302 C303 C304 C305 C306 C309 C310 C401 C402 C403 C404 C405 C406 C407 C408 C409 C410 C412 C413 C414 C415 C416 C417 C418 C419 Code No. 3301-000011 3301-000012 3301-000011 3301-000012 3301-000012 3301-000012 3301-000012 3301-000011 3301-000011 2401-000050 2201-000483 2201-000483 2201-000146 2201-000017 2401-000050 2401-000050 2401-000050 2201-000144 2202-002009 2401-000849 2305-000237 2202-002008 2301-000519 2401-000603 2301-001027 2401-000050 2201-000558 2301-000016 2201-000573 2301-000016 2202-002021 2401-002075 2301-000174 2401-000603 2301-000004 2202-002009 2401-000031 2301-000016 2201-000471 2201-000863 2401-000042 2401-000042 2202-002009 2301-000168 2305-000412 Description CORE-FERRITE BEAD CORE-FERRITE BEAD CORE-FERRITE BEAD CORE-FERRITE BEAD CORE-FERRITE BEAD CORE-FERRITE BEAD CORE-FERRITE BEAD CORE-FERRITE BEAD CORE-FERRITE BEAD C-AL C-CERAMIC,DISC C-CERAMIC,DISC C-CERAMIC,DISC C-CERAMIC,DISC C-AL C-AL C-AL C-CERAMIC,DISC C-CERAMIC,MLC-AXIAL C-AL C-FILM,MPEF C-CERAMIC,MLC-AXIAL C-FILM,PEF C-AL C-FILM,PEF C-AL C-CERAMIC,DISC C-FILM,PEF C-CERAMIC,DISC C-FILM,PEF C-CERAMIC,MLC-RADIAL C-AL C-FILM,PEF C-AL C-FILM,PEF C-CERAMIC,MLC-AXIAL C-AL C-FILM,PEF C-CERAMIC,DISC C-CERAMIC,DISC C-AL C-AL C-CERAMIC,MLC-AXIAL C-FILM,PEF C-FILM,MPEF Specification AA,3.5x1.0x5.7mm,1500 AA,3.5x1x9mm,1000,3000 AA,3.5x1.0x5.7mm,1500 AA,3.5x1x9mm,1000,3000 AA,3.5x1x9mm,1000,3000 AA,3.5x1x9mm,1000,3000 AA,3.5x1x9mm,1000,3000 AA,3.5x1.0x5.7mm,1500 AA,3.5x1.0x5.7mm,1500 10uF,20%,16V,GP,TP,5x11,2.5 33pF,5%,50V,CH,TP,5x3,5 33pF,5%,50V,CH,TP,5x3,5 100pF,5%,50V,SL,TP,5x3,5 1nF,10%,50V,Y5P,TP,4x3.5 10uF,20%,16V,GP,TP,5x11,2.5 10uF,20%,16V,GP,TP,5x11,2.5 10uF,20%,16V,GP,TP,5x11,2.5 100pF,5%,50V,CH,TP,8x3,5 100nF,+80-20%,50V,Y5 220uF,20%,35V,GP,TP,10x12.5,5 1uF,5%,63V,TP,7.5x15.5mm,5mm 10nF,+80-20%,50V,Y5V 3.3nF,5%,100V,TP,5.8x3x12.5,5 1uF,20%,50V,GP,TP,5x11,5 15nF,10%,250V,TP,9.5x12x4.5,5 10uF,20%,16V,GP,TP,5x11,2.5 470pF,10%,50V,Y5P,TP,5x3 22nF,5%,100V,TP,7.2x4.5x9.0mm 47pF,5%,50V,CH,TP,6.5x3.0 22nF,5%,100V,TP,7.2x4.5x9.0mm 1nF,5%,50V,NPO,TP,5 4.7uF,20%,50V,GP,TP,5x11,5 15nF,5%,100V,TP,7.2x4.0x7.5mm 1uF,20%,50V,GP,TP,5x11,5 2.2nF,5%,100V,TP,5.5X10X2.9,5 100nF,+80-20%,50V,Y5 47uF,20%,16V,GP,TP,5x11,5 22nF,5%,100V,TP,7.2x4.5x9.0mm .33NF,10%,50V,Y5P,TP,4X3M 680pF,10%,50V,Y5P,TP,5x3 100uF,20%,16V,GP,TP,6.3x7,5 100uF,20%,16V,GP,TP,6.3x7,5 100nF,+80-20%,50V,Y5 150nF,5%,100V,TP,11.5x19mm,7 470nF,5%,63V,TP,5mm Remarks ! DP14L*/DP15L* 8-1 8 Electrical Parts List Loc. No. C420 C421 C422 C423 C424 C425 C426 C427 C428 C429 C430 C431 C432 C433 C434 C435 C437 C438 C439 C440 C501 C502 C503 C504 C506 C507 C508 C509 C510 C511 C512 C513 C601 C602 C603 C604 C606 C607 C608 C609 C610 C611 C612 C613 C614 C615 C618 Code No. 2401-001509 2401-001515 2401-000603 2301-000004 2401-000887 2301-000005 2301-001207 2201-000291 2401-000028 2

File name DP14LT7N_ING.IN050.1.13.pdf

DP14L*/DP15L* VIDEO PRE-AMP IC101 VIDEO OUTPUT IC103(LM2439) SIGNAL RGB SOCKET RGB - CUTOFF QR, G,B01,02 G1 HEATER VIDEO INPUT 9 Block Diagrams H/V SYNC H/V MAIN BOARD F O C U S S C R E E N FRONT CONTROL KEY VER. OUTPUT IC301 H/V SIZE REG. HOR./VER. PROCESSOR IC401 HOR. DRIVE Q401 H. D. T T401 HOR. OUT Q402 VER. DY GT301, GT302 H-SYNC, V-SYNC H-SYNC1 V-SYNC1 E/W_OUT FBT T501 -210V +30V UP, DOWN BRIGHTNISS CONTRASTER PIN, TRAP SIZE, POSI, DEGA. MCU IC201 12C DATA 12C CLK B(+) ACL CIRCUIT +12V LED POWER S-COR. FROM MCU Q406, Q408 REG. HOR. DY CN502, CN503 CONTRAST CONTROL G1 BRIGHTNESS CONTROL CONTRAST CONTROL VER. BLANKING Q301 EPROM IC203 24LC04 TO VIDEO +12V +53V +13V -12V +6.3V V-MUTE S-CORRECTION PS-1(SUSPEND) PS-2(POWER OFF) HOR. LINEARITY BRIGHTNESS CONTROL TILT IC302 +70V TO D-COIL +12V REGULATOR VER.OUT & TILT CONTORL HEATER VOLTAGE CONTROL PS-1, PS-2(From Micom) -210V (FROM FBT) ON THE CRT DEGAUSSING BLOCK RL601 POWER PWM CONTROL IC601 SWITCHING TRANS T601 CRT HEATER BRIDGE POWER-OFF MODE CONTROL Q604 PS-2 AC INPUT SOCKET CN601 LINE FILTER L601 RETIFIER D601 9-1 9 Block Diagrams Memo 9-2 DP14L*/DP15L*

File name DP14LT7N_ING.IN050.1.15.pdf

10 Wiring Diagram MAIN PCB CRT Socket PCB CN202 1 2 3 4 5 6 7 Self-Raster GND H_Sync1 GND V_Sync1 DDC DATA DDC CLK CN201 Signal Cable IIC DATA GND IIC CLK CLAMP ACL H_BLK G1 12 V 6.3 V 70 V GND 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 IIC DATA GND IIC CLK CLAMP ACL H_BLK G1 12 V 6.3 V 70 V GND CN105 CN103 CRT SOCKET FBT GND (CN102) CN202_2 GND 1 B_Video 2 GND 3 G_Video 4 5 GND R_Video 6 GND (14" only) GND (14" only) Signal Cable DEGAUSSING COIL QQQQQQQQQQ PPPPPPPPPP @@@@@@@@@@ ,,,,,,,,,, QQQQQQQQQQ PPPPPPPPPP @@@@@@@@@@ ,,,,,,,,,, QQQQQ PPPPP @@@@@ ,,,,, QQQQQQQQQQ PPPPPPPPPP @@@@@@@@@@ ,,,,,,,,,, QQQQQ PPPPP @@@@@ ,,,,, QQQQQQQQQQ PPPPPPPPPP @@@@@@@@@@ ,,,,,,,,,, QQQQQ PPPPP @@@@@ ,,,,, QQQQQQQQQQ PPPPPPPPPP @@@@@@@@@@ ,,,,,,,,,, QQQQQ PPPPP @@@@@ ,,,,, QQQQQQQQQQ PPPPPPPPPP @@@@@@@@@@ ,,,,,,,,,, AC NC AC AC NC AC GT602 GT601 CRT CN601 (POWER INPUT) AC INPUT GND AC INPUT DP14L*/DP15L* 10-1

File name DP14LT7N_ING.IN050.1.16.pdf

11 Schematic Diagrams 11-1 Power Part Schematic Diagram MULTI-MEDIA 11-1 DP14L*/DP15L* 11 Schematic Diagrams 1 410 V (IC601, #1) 2 8.40 V (IC601, #5) CH1 = 410 V CH1 RMS = 332.8 V CH1 = 8.40 V CH1 RMS = 4.680 V DP14L*/DP15L* 11-2 11 Schematic Diagrams 11-2 Micom Part Schematic Diagram 11-3 DP14L*/DP15L* 11 Schematic Diagrams 14 5.92 V (IC201, #16, 17) 20 4.92 V (IC201, #14) 21 5.52 V (IC201, Keyin/out) 23 5.16 V (IC202, #3) CH1 P-P = 5.92 V CH1 RMS = 3.812 V CH1 P-P = 4.92 V CH1 RMS = 2.912 V CH1 P-P = 5.52 V CH1 RMS = 3.696 V CH1 P-P = 5.16 V CH1 RMS = 3.570 V 24 5.28 V (IC201, #31) 25 4.96 V (IC201, #30) CH1 P-P = 5.28 V CH1 RMS = 1.218 V CH1 P-P = 4.96 V CH1 RMS = 350 mV DP14L*/DP15L* 11-4 11 Schematic Diagrams 11-3 HOR./VER. Part Schematic Diagram TILT OPTION 11-5 DP14L*/DP15L* 11 Schematic Diagrams 3 5.12 V (IC401, #6) 4 4.60 V (IC401, #26) 8 1.12 V (IC401, #24) 9 3.16 V (IC401, #23) CH1 P-P = 5.12 V CH1 RMS = 4.256V CH1 P-P = 4.60 V CH1 RMS = 3.054 V CH1 P-P = 1.12 V CH1 RMS = 3.094 V CH1 P-P = 3.16 V CH1 RMS = 3.686 V 10 50.8 V (IC301, #9) 12 14.0 V (IC401, #28) 26 5.48 V (IC401, #1) 27 4.48 V (IC401, #2) CH1 P-P = 50.8 V CH1 RMS = 7.04 V CH1 P-P = 14.0 V CH1 RMS = 7.34 V CH1 P-P = 5.48 V CH1 RMS = 1.362 V CH1 P-P = 4.48 V CH1 RMS = 284 mV 28 2.76 V (IC401, #12) 29 736 mV (IC401, #16) 32 158 V (CN105, G1) CH1 P-P = 2.76 V CH1 RMS = 842 mV CH1 P-P = 736 mV CH1 RMS = 233.6 mV CH1 P-P = 158 V CH1 RMS = 151.1 V DP14L*/DP15L* 11-6 11 Schematic Diagrams 11-4 H_OUT Part Schematic Diagram 15" ONLY 11-7 DP14L*/DP15L* 11 Schematic Diagrams 5 28.4 V (Q501, Collector) 6 10.40 V (Q402, Base) 7 1.176 kV (Q402, Collector) 11 38.4 V (T501, #4) CH1 P-P = 28.4 V CH1 RMS = 15.55 V CH1 P-P = 10.40 V CH1 RMS = 1.664 V CH1 P-P = 1.176 kV CH1 RMS = 349.2 V CH1 P-P = 38.4 V CH1 RMS = 10.38 V 13 136 V (Q504, Drain) 30 5.8 V (Q412, Collector) 31 5.36 V (Q510, Collector) CH1 P-P = 136 V CH1 RMS = 78.3 V CH1 P-P = 5.8 V CH1 RMS = 20.84 V CH1 P-P = 5.36 V CH1 RMS = 4.210 V DP14L*/DP15L* 11-8 11 Schematic Diagrams 11-5 Video Part Schematic Diagram 11-9 DP14L*/DP15L* 11 Schematic Diagrams 15 3.16 V (IC101, #21) 16 43.2 V (IC103, #3) 17 35.2 V (SK103, G1) 18 5.60 V (IC101, #12) CH1 P-P = 3.16 V CH1 RMS = 1.008 V CH1 P-P = 43.2 V CH1 RMS = 63.56 V CH1 P-P = 35.2 V CH1 RMS = 80.84 V CH1 P-P = 5.60 V CH1 RMS = 4.908 V 19 46.4 V (SK103, G) 22 1.016 V (CN202_2, #2,4,6) CH1 P-P = 46.4 V CH1 RMS = 38.16 V CH1 P-P = 1.016 V CH1 RMS = 174.4 mV DP14L*/DP15L* 11-10 11 Schematic Diagrams Memo 11-11 DP14L*/DP15L*