HarmanKardon-AVR340-avr-sm维修电路原理图.pdf
《HarmanKardon-AVR340-avr-sm维修电路原理图.pdf》由会员分享,可在线阅读,更多相关《HarmanKardon-AVR340-avr-sm维修电路原理图.pdf(186页珍藏版)》请在收音机爱好者资料库上搜索。
1、 harman/kardon AVR340 AVR340 7 X 55W 7.1 CHANNEL A/V RECEIVER SERVICE MANUAL CONTENTS ESD WARNING.2 LEAKAGE TESTING.3 BASIC SPECIFICATIONS.4 PACKAGING.5 FRONT PANEL CONTROLS.6 REAR PANEL CONNECTIONS.9 REMOTE CONTROL FUNCTIONS.12 CONNECTIONS.16 OPERATION.19 TROUBLESHOOTING GUIDE.26 PROCESSOR RESET.26
2、 BULLETIN HK2006-0127 TECH TIP HK2003-01.28 DISASSEMBLY29 UNIT EXPLODED VIEW.32 EXPLODED VIEW PARTS LIST33 AMP BIAS ADJUSTMENT.34 BLOCK DIAGRAM.35 ELECTRICAL PARTS LIST.36 PCB DRAWINGS80 SEMICONDUCTOR PINOUTS.86 SCHEMATICS.178 WIRING DIAGRAM186 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, Ne
3、w York 11797 Rev 1 10/2006 RadioFans.CN 收音机爱 好者资料库 Eachprecautioninthismanualshouldbefollowedduringservicing. Components identified with the IEC symbolin the parts list are special significance to safety. When replacing a component identified with , use only the replacement parts designated, or part
4、s 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 the product to the customer. Some
5、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 tec
6、hniques 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
7、 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,
8、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
9、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 replacement ES devices are packaged with
10、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 assembly into which the device will be i
11、nstalled. 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 the lifting of your foot from a ca
12、rpeted floor can generate static electricity sufficient to damage an ES devices. CAUTION : AVR340 AVR340 harman/kardon 2 SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Measure leakage current to a
13、known earth ground (water pipe, conduit, etc.) by connecting a leakage current tester between the earth ground and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60Hz o
14、utlet and turn the AC power switch on. Any current measured must not exceed o.5mA. ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. Device under test Test all exposed metal surfaces
15、Also test with plug reversed (Using AC adapter plug as required) AC Leakage Test Leakage current tester Reading should not be above 0.5mA Earth ground AVR340 AVR340 harman/kardon 3 RadioFans.CN 收音机爱 好者资料库 AVR 340 TECHNICAL SPECIFICATIONS Audio Section Stereo Mode Continuous Average Power (FTC) 70 Wa
16、tts per channel, 20Hz20kHz, 0.07% THD, both channels driven into 8 ohms Seven-Channel Surround Modes Power per Individual Channel Front L press it again to turn the unit off.The Power Indicator 2 turns blue when the unit is on. 4 Headphone Jack: This jack may be used to listen to the AVR 340s output
17、 through a pair of headphones. The speakers will automatically be turned off when the headphone jack is in use.When configuring your sys- tem using EzSet/EQ, the calibration microphone should be plugged into this jack using the supplied adaptor that converts the small mini-plug at the end of the mic
18、rophones cord to a 1/4 plug. 5 Tone Mode: This button controls the tone mode settings, enabling adjustment of the bass and treble boost/cut.You may also use it to take the tone con- trols out of the signal path completely for “flat” response.The first press of the button displays a TONE IN message i
19、n the Lower Display Line and in the on-screen display.To take the controls out of the signal path, press either of the / Buttons ) until the display reads TONE OUT. To change the bass or treble settings, make sure that TONE IN appears in the Lower Display Line or press either of the / Buttons ) unti
20、l it does. Press the Tone Mode Button 5 until the desired option of TREBLE MODE or BASS MODE appears in the Lower Display Line and in the on-screen display and then press either of the / Buttons ) to enter the desired boost or cut setting. Both treble and bass contours may be boosted or cut by up to
21、 + or 10dB in increments of 2dB. See pages 23 and 34 for more information on the tone controls. NOTE: The AVR 340 is not equipped with a traditional Balance control.When listening to two-channel materi- als, if you wish to adjust the stereo image, you may use the Channel Adjust Selector to increase
22、or decrease the level of the left front channel by up to + or 10dB, and then to decrease or increase the right front channel by the corresponding amount. However, when listening to surround materials and most two- channel materials, it is recommended that you leave these settings at the results obta
23、ined during the config- uration process described on pages 19 through 33. 1 Main Power Switch 2 Power Indicator 3 Standby/On Switch 4 Headphone Jack 5 Tone Mode 6 Speaker Selector 7 Surround Mode Group Selector 8 Surround Mode Selector 9 Tuning Selector )/Buttons ! Tuner Band Selector Set Button # D
24、igital Input Selector $ Preset Station Selector % Delay Adjust Selector Input Source Selector continue to hold the button until the Sleep indicator numbers disappear and the words SLEEP OFF appear in the Lower Display Line Q. When you will be away from home for an extended period of time it is alway
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- HarmanKardon AVR340 avr sm 维修 电路 原理图