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Now downloading free:Samsung DP14LS/LT DP15LS/LT


Download Samsung DP14LS/LT DP15LS/LT docs - Computer monitors - CRT, TFT, LCD, touch screen, plasma display - service manuals and repair information

File information:
File name:450B-part1.zip
[preview DP14LS/LT DP15LS/LT] new window
Size:1144 kB
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MD5:40da824da0c76bcf8dba63af923c7a1a
Mfg:

Samsung

Model:

DP14LS/LT DP15LS/LT

Original Chassis:
Descr:Service Manual Samsung 450B / 550B
Group:Electronics > Computer equipment > Monitors >
Uploaded:2004-07-07 11:41:10
User:vexus
Multipart: 0  1

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Decompress result:OK
Extracted files:11
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DP14LT7N_ING.IN050.1.01.pdfCOLOR 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
DP14LT7N_ING.IN050.1.02.pdf1 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 unitŐs AC switch first in the ON position and then OFF, measure the current between a known earth ground (metal
DP14LT7N_ING.IN050.1.04.pdf2 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
DP14LT7N_ING.IN050.1.05.pdf3 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*
DP14LT7N_ING.IN050.1.06.pdf4 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 ŇttakÓ sound. (2 grooves :
DP14LT7N_ING.IN050.1.07.pdf5 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
DP14LT7N_ING.IN050.1.09.pdf6 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 Fa
DP14LT7N_ING.IN050.1.12.pdf8 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-FERR
DP14LT7N_ING.IN050.1.13.pdfDP14L*/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 SWITCH
DP14LT7N_ING.IN050.1.15.pdf10 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
DP14LT7N_ING.IN050.1.16.pdf11 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

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