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File name HANSOL 500A(E15AL).pdf

Service Manual 15 Inch (Viewable size 13.8 High Resolution Color Monitor (E15AL) 0.28d/p, 55KHz) Contents 1. Precautions Safety Precautions Servicing Precautions Electrostatically Sensitive Devices(ESD) Precautions 4 7 8 2. Product Specifications Specifications Dimensions Pin Assignment Table D-Sub 15 Pin Connector Timing Chart 9 10 11 13 3. Operating Instructions Front View and Controls Panel Display Power Management Signaling (DPMS) 16 17 4. Disassembly and Reassembly Disassembly Reassembly 18 22 5. Alignment and Adjustments General Instructions Display Control Adjustments Color Adjustments Focus Adjustment Convergence Adjustments Balance Convergence Adjustments 24 27 30 31 32 35 6. Troubleshooting No Power No Raster(1) No Raster(2) No Raster(3) No Raster(4) Horizontal Line On Raster Raster Appears But Picture Does Not Show No S-Correction Value Each Mode 36 37 38 39 40 41 42 43 2 Service Manual Contents No Specific color Appears Function key doesn't Operate Color Purity Failure Side Pin and Trapezoid Functions Do Not Operate Power Save Mode Does Not Operate 43 44 44 45 46 CONTENTS 7. Exploded View & Parts List 47 8. Packing & Unpacking 49 9.Block Diagram 51 10.Wiring Diagram 52 11.PCB Layout Main PCB Socket PCB Electrical Parts List Semiconductor Lead Identification 53 55 57 63 12.Main Board Schematic Diagram 65 Copyright 1997 by Hansol Electronics Inc. All rights reserved. This manual may not, in whole or in part, be copied, photocopied, reproduced, translated, or converted to any electronic or machine readable form without prior written permission of Hansol Electronics Inc. Mazellan 500A(E15AL) Service Manual Third edition October 1998 Printed in KOREA Service Manual 3 Precautions 1. Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock and X­ray exposure. 1-1 Safety Precautions 1-1-1 Warnings 1. For continued safety, do not attempt to modify the circuit board. 2. Disconnect the AC power before servicing. 3. With AC power applied, semiconductor heat sinks are potential shock hazards. 1-1-2 Servicing the High Voltage System and CRT 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. (Disconnect the AC line cord from the AC outlet.) 2. Do not lift the CRT by the neck. 3. Handle the CRT only while wearing shatterproof goggles and after completely discharging the high voltage anode. 1-1-3 X-Rays and High Voltage Limits 1. Keep the high voltage below the specified maximum level. Be sure all service personnel are aware of the procedures and instructions covering X­rays. The only potential source of X­ray in current solid state display monitors is the CRT. However, the CRT does not emit measurable X­ray radiation if the high voltage is as specified in the fire and shock hazard instructio