Harman/Kardon AVR520 free download

File name HarmanKardon-AVR520 rec.pdf

harman/kardon AVR520 A/V DOLBY DIGITAL RECEIVER SERVICE MANUAL CONTENTS ESD WARNING...2 BLOCK DIAGRAM...18 LEAKAGE TESTING...3 BULLETIN HK2003-07...19 BASIC SPECIFICATIONS...4 TECH TIP HKTT2003-01...21 FRONT PANEL CONTROLS...5 TECH TIP HKTT2004-03...22 REAR PANEL CONNECTIONS...10 IDLE CURRENT ADJUSTMENT...26 REMOTE CONTROL FUNCTIONS...12 ELECTRICAL PARTS LIST...29 TROUBLESHOOTING GUIDE...15 SEMICONDUCTOR PINOUTS...77 PROCESSOR RESET...15 SCHEMATICS...138 UNIT EXPLODED VIEW...16 WIRING DIAGRAM...159 EXPLODED VIEW PARTS LIST...17 PACKAGE...160 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev5 ­ 6/2005 AVR520 harman/kardon Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge build-up or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical change suf