CONFIDENTIAL 1 Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1 Safety Precautions 1-1-1 Warnings For continued safety, do not attempt to modify the (READING SHOULD circuit board. NOT BE ABOVE 0.5mA) Disconnect the AC power and DC Power Jack before servicing.
CONFIDENTIAL 1 Precautions 1-2 Servicing Precautions WARNING: An electrolytic capacitor installed with the wrong polarity might explode. Caution: Before servicing units covered by this service manual, read and follow the Safety Precautions section of this manual. Note: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions.
CONFIDENTIAL 2 Product Specifications 2-2 Pin Assignments 2-2-1 D-SUB 2-2-2 DVD,DTV Separate RCA Green Green Blue Pb (Cb) RCA Blue GND (DDC Return) GND-Red Pr (Cr) GND-Green RCA Red GND-Blue No Connection GND-Sync./Self Test Audio L RCA White DDC Data H-Sync.
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CONFIDENTIAL 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. 2-3-1 LCD Panel Mode : 1 mode µs µs µs µs µs µs µs µs LS15N13W/LS17N13W...
CONFIDENTIAL 3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the LS15N13W/LS17N13W monitor. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 3-1 Disassembly Cautions:1. Disconnect the monitor from the power source before disassembly. 2.
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CONFIDENTIAL 3 Disassembly and Reassembly 4. Lift up the rear cover until it opens completely. 3-2 Reassembly Reassembly procedures are in the reverse order of Disassembly procedures. LS15N13W/LS17N13W...
CONFIDENTIAL 4 Alignments and Adjustments 4-1 General Alignment Instuction 1. Usually, a color TV-VCR needs only slight touch-up adjustment upon installation. Check the basic characteristics such as height, horizontal and vertical sync. 2. Use the specified test equipment or its equivalent. 3.
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CONFIDENTIAL 4 Alignments and Adjustments 4-2 Factory Mode Adjustments 4-2-1 Entering Factory Mode 1. To enter “Service Mode” Press the remote - control keys in this sequence : - If you do not have Factory remote - control - If you have Factory remote - control 4-2-2 Factory Mode Tree LS15N13W/LS17N13W...
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CONFIDENTIAL 4 Alignments and Adjustments LS15N13W/LS17N13W...
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CONFIDENTIAL 4 Alignments and Adjustments Memo LS15N13W/LS17N13W...
CONFIDENTIAL 5 Troubleshooting 5-1 No Power Does proper DC 14V appear at DC Check SMPS PCB and Adapter. jack connected to CN801? Does proper DC 3.3V_A Check IC801. (#2) appear at FT852? Does proper DC 2.5V_A Check IC802. appear at Pin 3 of IC802? Does proper DC 3.3V_B Check IC805.
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CONFIDENTIAL 5 Troubleshooting 5-2 No Video (PC Signal, DTV) Power indicator is green. Does the signal appear Check CN401 at C306, C398, C397 CN409~CN411 and cable. of R, G, B input? Does the clock pulse appear at Check related circuit of IC350. output of RA351 ~ RA356? Does the clock pulse Check IC001 and related...
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CONFIDENTIAL 5 Troubleshooting 5-3 No Picture (TV, Video, S-Video, DVD) Check the CO44, CO45(S-Video), CO46(VCR) and CO42(RF-CVBS), C035(DVD_Y) Check the CN888(Tuner) and the IC011 #1 RF-CVBS CN702_1, CN404~CN406(DVD). IC011 #5 S-Video IC011 #8 VCR IC010 #5 DVD_Y Does the clock pulse appear at Check the #19 of IC011 IC006~IC009 of output IC010? and realted circuit of IC010.
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CONFIDENTIAL 5 Troubleshooting WAVEFORMS X201 DVD Y Input (CO35) IC006-IC009 Output Data IC011 Output Data (#19) LS15N13W/LS17N13W...
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CONFIDENTIAL 5 Troubleshooting 5-4 No Sound Does the signal appear at Pin 67 (Tuner sound signal) and Pin Check the CN403 (PC conector) and the 47, 48 (PC sound) and Pin 56, 57 CN407, CN408, CN412, 413 and the (DTV sound) and Pin 53, 54 (DVD CN200 (CN002) and the CN888 (Tuner) sound) Pin 50, 51 (VCR) of and the CN702_1.
CONFIDENTIAL 9 Wiring Diagram CN901(15", 17") BRIGHT CONTROL KEY1 To Inverter CN706_1 KEY1 CN920 INVERTER ON/0FF SPK OUT R + CN502 SPK OUT R SPK OUT L + CN501 SPK OUT L AUDIO R IN AUDIO L IN VCR CVB S Y IN LED_GRN C IN...
CONFIDENTIAL 10 Schematic Diagrams 10-1 CPU Block & Signal Processing Part Schematic Diagram PAG(0:7) TO DPTV DIGITAL INPUT PAR(0:7) +3.3V_A PAB(0:7) AD(0:7) TO DPTV IC002 IC003 +3.3V_BD MCAD(0:7) MCAD(0:7) C336 SUPLECODE SUPLECODE C602 PARALLEL COMM 100uF IC004 IC005 100nF SUPLECODE SUPLECODE IC001 MCA(0:19)
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CONFIDENTIAL 10 Schematic Diagrams Full White R, G, B Input (C306, 398, 397) FullWhite Y Input (C398_DTV) DVD Y Input (CO35) IC006-IC009 Output Data IC011 Output Data (#19) 10-2 LS15N13W/LS17N13W...
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