DENON Harman-Kardon-AVR-230-Service-Manual free download

File name Harman-Kardon-AVR-230-Service-Manual.pdf

harman/kardon AVR230 6 X 50W 5.1/7.1 CHANNEL A/V RECEIVER SERVICE MANUAL CONTENTS ESD WARNING...2 TECH TIP HKTT2003-01...21 LEAKAGE TESTING...3 UNIT EXPLODED VIEW...22 BASIC SPECIFICATIONS...4 BLOCK DIAGRAM...23 FRONT PANEL CONTROLS...5 AMP BIAS ADJUSTMENT...24 REAR PANEL CONNECTIONS...7 PCB DRAWINGS...25 REMOTE CONTROL FUNCTIONS...10 ELECTRICAL PARTS LIST...31 TROUBLESHOOTING GUIDE...13 SEMICONDUCTOR PINOUTS...67 PROCESSOR RESET...13 SCHEMATICS...108 DISASSEMBLY...14 WIRING DIAGRAM...124 BULLETIN HK2003-10...15 PACKAGING...125 TECH TIP HKTT2004-03...17 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 7/2005 AVR230 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