Harman/Kardon AVR247 free download

File name HarmanKardon-AVR247 rec.pdf

harman/kardon AVR247 7 X 50W 7.1 CHANNEL A/V RECEIVER SERVICE MANUAL CONTENTS ESD WARNING...2 DISASSEMBLY...36 LEAKAGE TESTING...3 UNIT EXPLODED VIEW...41 BASIC SPECIFICATIONS...4 EXPLODED VIEW PARTS LIST...42 PACKAGING...5 AMP BIAS ADJUSTMENT...43 FRONT PANEL CONTROLS...6 BLOCK DIAGRAM...44 REAR PANEL CONNECTIONS...8 PCB DRAWINGS...45 REMOTE CONTROL FUNCTIONS...11 ELECTRICAL PARTS LIST...54 CONNECTIONS/INSTALLATION...14 SEMICONDUCTOR PINOUTS...95 OPERATION...26 SCHEMATICS...196 TROUBLESHOOTING GUIDE...34 WIRING DIAGRAM...206 REMOTE & PROCESSOR RESETS...35 harman/kardon, Inc. 250 Crossways Park Dr. Released 2007 Woodbury, New York 11797 Rev0 6/2007 Discontinued XXXX AVR247 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 electri