Harman/Kardon AVR240 free download

File name HarmanKardon-AVR240 rec.pdf

harman/kardon AVR240 7 X 50W 7.1 CHANNEL A/V RECEIVER SERVICE MANUAL CONTENTS ESD WARNING...2 UNIT EXPLODED VIEW...26 LEAKAGE TESTING...3 EXPLODED VIEW PARTS LIST...27 BASIC SPECIFICATIONS...4 AMP BIAS ADJUSTMENT...28 PACKAGING...5 BULLETIN HK2006-01...29 FRONT PANEL CONTROLS...6 TECH TIP HK2003-01...30 REAR PANEL CONNECTIONS...9 BLOCK DIAGRAM...31 REMOTE CONTROL FUNCTIONS...12 ELECTRICAL PARTS LIST...32 CONNECTIONS...16 PCB DRAWINGS...71 OPERATION...18 SEMICONDUCTOR PINOUTS...77 TROUBLESHOOTING GUIDE...24 SCHEMATICS...148 PROCESSOR RESET...24 WIRING DIAGRAM...155 DISASSEMBLY...25 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev 2 9/2006 AVR240 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