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1、 harman/kardon AVR110 AVR110 A/V DOLBY DIGITAL RECEIVER SERVICE MANUAL CONTENTS ESD WARNING.2 LEAKAGE TESTING.3 BASIC SPECIFICATIONS.4 FRONT PANEL CONTROLS.5 REAR PANEL CONNECTIONS.9 REMOTE CONTROL FUNCTIONS.11 TROUBLESHOOTING GUIDE.14 PROCESSOR RESET.14 IDLE CURRENT/TUNER ALIGNMENT.15 BULLETIN # H/
2、K2001-01.16 BULLETIN # H/K2001-03.18 BULLETIN # H/K2003-07.19 TECH TIP# HKTT2002-01.21 TECH TIP# HKTT2003-01.23 UNIT EXPLODED VIEW.24 EXPLODED VIEW PARTS LIST.25 BLOCK DIAGRAMS.26 PCB DRAWINGS.28 ELECTRICAL PARTS LIST.40 SEMICONDUCTOR PINOUTS.61 SCHEMATICS.109 WIRING DIAGRAM.124 PACKAGE.127 harman/k
3、ardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev2 6/2005 RadioFans.CN Eachprecautioninthismanualshouldbefollowedduringservicing. Components identified with the IEC symbolin the parts list are special significance to safety. When replacing a component identified with , use only the rep
4、lacement parts designated, or parts with the same ratings or resistance, wattage, or voltage that are designated in the parts list in this manual. Leakage-current or resistance measurements must be made to determine that exposed parts are acceptably insulated from the supply circuit before retuming
5、the product to the customer. 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
6、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 e
7、arth 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 conducti
8、ve 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
9、 electrical charges sufficient to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical change sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replace
10、ment ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material.) 7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assemb
11、ly into which the device will be installed. Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together or your clothes fabric or
12、the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES devices. CAUTION : AVR110 AVR110 harman/kardon 2 RadioFans.CN 1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other me
13、tal partsintheunit. 2. Be sure that any protective devices such as nonmetallic control knobs, insulating fish- papers,cabinetbacks,adjustmentand compartment covers or shields, isolation resistor-capacitynetworks,mechanical insulators, etc. Which were removed for the servicingareproperlyre-installed.
14、 Before returning the unit to the user, perform the following safety checks : 3. Be sure that no shock hazard exists ; check for leakage currentusingSimpsonModel229LeakageTester,standard equipment item No. 21641, RCA Model WT540A or use alternate method asfollows : Plug the power cord directly Into
15、a 120 volt AC receptacle (do not use an Isolation Transformer for this test). Using two clip leads, connect a 1500ohms,10wattResistorparalleledbya0.15uFcapacitor,inserieswithallexposedmetalcabinetpartsandaknownearthground,such as a water pipe or conduit. Use a VTVM or VOM with 1000 ohms per volt, or
16、 higher sensitivity to measure the AC voltage drop across the resistor. (See diagram) Move the resistor connection to each exposed metal part having a return path to the chassis (antenna, metal, cabinet,screwheads,knobsandcontrolshafts,escutcheon,etc.)andmeasuretheACvoltagedropacrosstheresistor.(Thi
17、stestshouldbe performedwiththe0.35voltRMSormoreisexcessiveandindicatesapotentialshockhazardwhichmustbecorrectedbeforereturningthe unittotheowner. AVR110 AVR110 harman/kardon 3 RadioFans.CN 4 TECHNICAL SPECIFICATIONS Technical Specifications Audio Section Stereo Mode Continuous Average Power (FTC) 50
18、 Watts per channel, 20Hz20kHz, 0.07% THD, both channels driven into 8 ohms Five-Channel Surround Mode Power per Individual Channel Front L press it again to turn the unit off. Note that the Power Indicator surrounding the switch 3 will turn green when the unit is on. 3 Power Indicator: This LED will
19、 be illumi- nated in amber when the unit is in the Standby mode to signal that the unit is ready to be turned on.When the unit is in operation, the indicator will turn green. 4 Headphone Jack:This jack may be used to listen to the AVR 110s output through a pair of headphones. Be certain that the hea
20、dphones have a standard 1/4 stereo phone plug. Note that the main room speakers will automatically be turned off when the headphone jack is in use. 5 Selector Buttons:When you are establish- ing the AVR 110s configuration settings,use these buttons to select from the choices available, as shown in t
21、he Main Information Display . 6 Tone Mode: Pressing this button enables or disables the Bass and Treble tone controls. When the button is pressed so that the words TONE IN appear in the Main Information Display , the settings of the Bass the tuner will automatically scan for the next station with an
22、 acceptable signal and then stop. 9 Tuner Band Selector: Pressing this button will automatically switch the AVR 110 to the Tuner mode. Pressing it again will switch between the AM and FM frequency bands. (See page 25 for more information on the tuner.) ) Preset Stations Selector: Press this button t
23、o scroll up or down through the list or stations that have been entered into the preset memory. (See page 26 for more information on preset tuning.) ! Input Source Selector: Press this button to change the input by scrolling up or down through the list of input sources. FM Mode Selector: Press this
24、button to select Auto or Manual tuning.When the button is pressed so that the AUTO indicator V lights, the tuner will search for the next station with an acceptable signal when the Tuning Selector 8u is pressed.When the button is pressed so that the AUTO indicator V is not lit, each press of the Tun
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