HarmanKardon-AVR230-avr-sm2维修电路原理图.pdf

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1、 harman/kardon AVR230 AVR230 6 X 50W 5.1/7.1 CHANNEL A/V RECEIVER SERVICE MANUAL CONTENTS ESD WARNING.2 LEAKAGE TESTING.3 BASIC SPECIFICATIONS.4 FRONT PANEL CONTROLS.5 REAR PANEL CONNECTIONS.7 REMOTE CONTROL FUNCTIONS.10 TROUBLESHOOTING GUIDE.13 PROCESSOR RESET.13 DISASSEMBLY14 BULLETIN HK2003-10.15

2、 TECH TIP HKTT2004-0317 TECH TIP HKTT2003-01.21 UNIT EXPLODED VIEW.22 BLOCK DIAGRAM.23 AMP BIAS ADJUSTMENT.24 PCB DRAWINGS.25 ELECTRICAL PARTS LIST.31 SEMICONDUCTOR PINOUTS67 SCHEMATICS108 WIRING DIAGRAM.124 PACKAGING.125 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 7/200

3、5 www.freeservicemanuals.infoIts Free www.freeservicemanuals.info 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 th

4、e replacement 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 retu

5、ming 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 semicondu

6、ctor 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 kn

7、own 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 con

8、ductive 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 gen

9、erate 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 re

10、placement 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 a

11、ssembly 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 fabri

12、c or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES devices. CAUTION : AVR230 AVR230 harman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 收音机爱 好者资料库 2 SAFETY PRECAUTIONS The following check should be per

13、formed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Measure leakage current to a 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 ter

14、minals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60Hz outlet 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

15、HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. Device under test Test all exposed metal surfaces 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 AVR230 AVR230 harman/k

16、ardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 收音机爱 好者资料库 TECHNICAL SPECIFICATIONS 4 AVR 230 TECHNICAL SPECIFICATIONS Audio Section Stereo Mode Continuous Average Power (FTC) 65 Watts per channel, 20Hz20kHz, 0.07% THD, both channels driven into 8 ohms Six-Channel

17、Surround Modes Power per Individual Channel Front L press it again to turn the unit off.The Power Indicator 3 turns blue when the unit is on. 4 Headphone Jack: This jack may be used to listen to the AVR 230s output through a pair of headphones. The speakers will automatically be turned off when the

18、headphone jack is in use. 5 Tone Mode: Pressing this button enables or dis- ables the Bass and Treble tone controls.When the but- ton is pressed so that TONE IN appears in the Lower Display Line , the Bass and Treble controls may be used to adjust the output signals. When the button is pressed once

19、or twice so that the words TONE OUT appear in the Lower Display Line , the output signal will be “flat, ” no matter how the actual Bass and Treble Controls are adjusted. 6 Speaker Selector: Press this button to begin the process of configuring the unit to match the type of speakers used in your list

20、ening room. (See pages 1820 for more information on speaker setup and configuration.) 7 Surround Mode Group Selector: Press this but- ton to select the top-level group of surround modes. Each press of the button will select the current or last used mode in each of the surround mode groups (e.g., Dol

21、by, DTS, DTS Neo:6, Logic 7, DSP, Stereo). When the button is pressed so that the name of the surround mode group appears in the on-screen display and in the Lower Display Line , press the Surround Mode Selector 8 to cycle through the individual modes available. For example, press this but- ton to s

22、elect Dolby modes, and then press the Surround Mode Selector 8 to choose from the various mode options. 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 ! Tune

23、r Band Selector Set Button # Digital Input Selector $ Preset Station Selector % Delay Adjust Selector Input Source Selector Amplifier is in protection mode Check speaker wire connections for shorts at receiver and light around power switch is reddue to possible shortspeaker ends Amplifier is in prot

24、ection mode Contact your local Harman Kardon service center due to internal problems No sound from surround or Incorrect surround mode Select a mode other than Stereo center speakers Input is monaural There is no surround information from mono sources Incorrect configuration Check speaker mode confi

25、guration Stereo or Mono program material The surround decoder may not create center- or rear-channel information from nonencoded programs Unit does not respond to Weak batteries in remote Change remote batteries remote commands Wrong device selected Press the AVR selector Remote sensor is obscured M

26、ake certain front panel sensor is visible to remote or connect remote sensor Intermittent buzzing in tuner Local interference Move unit or antenna away from computers, fluorescent lights, motors or other electrical appliances Letters flash in the channel indicator Digital audio feed paused Resume pl

27、ay for DVD display and digital audio stops Check that Digital Input is selected Fan does not appear to operate Additional cooling may not be required The fan is activated only when additional cooling is required due to high internal temperature. It is normal for the fan to be inactive at normal volu

28、me levels. 42 Processor Reset In the rare case where the units operation or the dis- plays seem abnormal, the cause may involve the erratic operation of the systems memory or microprocessor. To correct this problem, first unplug the unit from the AC wall outlet and wait at least three minutes. After

29、 the pause, reconnect the AC power cord and check the units operation. If the system still malfunctions, a sys- tem reset may clear the problem. To clear the AVR 230s entire system memory includ- ing tuner presets, output level settings, delay times and speaker configuration data, press and hold the

30、 Tone Mode Button 5 button for three seconds.The unit will turn on automatically. NOTE: Resetting the processor will erase any configu- ration settings you have made for speakers, output levels, surround modes, digital input assignments as well as the tuner presets.After a reset the unit will be ret

31、urned to the factory presets, and all settings for these items must be reentered. If the system is still operating incorrectly, there may have been an electronic discharge or severe AC line interference that has corrupted the memory or microprocessor. If these steps do not solve the problem, consult

32、 an authorized Harman Kardon service center. TROUBLESHOOTING GUIDE 13 TROUBLESHOOTING GUIDE AVR230 AVR230 harman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 收音机爱 好者资料库 MAIN PCB INPUT PCB TRANS FORMER FRONT PCB 1) REMOVAL OF TOP COVER 2) REMOVAL OF FRONT PANEL

33、DISASSEMBLY TUNER MODULE 3) PRINCIPAL PARTS LOACTION VIDEO PCB AVR230 AVR230 harman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 收音机爱 好者资料库 harman/kardon Service Bulletin Service bulletin # H/K2003-10 December 2003 Warranty labor rate: MAJOR repair To: All harm

34、an/kardon Service Centers Models: AVR130, AVR230, AVR330, HK3380, HK3480 Subject: Volume Level Changes On early versions of the AVR130,AVR230,AVR330,HK3380,HK3480, when the volume control is turned, the volume level and display may be erratic, and not track accurately, or the level may progress in a

35、n unintended direction. This may happen on a random basis and depends on where the volume control knob is positioned after a volume adjustment. During a running production change, new volume encoders were installed. In the event you receive an AVR model listed above with the complaint “The volume co

36、ntrol on my receiver does not track accurately when turned”, perform the following procedure: REPLACE VR74 (AVR130/230/330) or VR81 (HK3380/3480) VOLUME ENCODER Note: It is important that the various screws do not get mixed up and inserted in other locations upon reassembly. Make note or label each

37、removed screw set; keep them apart from other screw sets. 1) Remove the top cover, (13) Phillips screws. 2) Remove the volume, bass, treble and balance knobs by pulling them straight out and off. If a tool is necessary for removal of the smaller knobs, make sure the jaws are insulated to avoid knob

38、damage. 3) Remove the (10) Phillips screws holding the front panel assy to the chassis: (6) at the bottom and (4) at the sides. 4) Cut all plastic cable ties that would prevent you detaching the front panel assy from the chassis. Draw a diagram if necessary, for a location reminder, to aid reassembl

39、y. 5) Unplug connector CN15 (6 cond) or CN89 (7 cond) at the left side of the unit. See below. 6) Remove single ground screw at the left side of the unit, near CN15 or CN89. (Black wire) 7) Unplug connector CN72 (32 cond) or CN81 (20 cond) on the DSP PCB, coming from the top of the front panel assy.

40、 See below. 8) There should now be enough slack in the connecting cables to lift and detach the front panel assy from the chassis. Pull the front panel as far away as the remaining connecting wires will allow, enough to tilt and gain access to the rear of the Tone/Volume PCB. See illustration Page 2

41、. 9) Remove the (10) screws or (9) screws holding the Tone/Volume PCB to the front panel. 10) Detach and pull back the PCB; unplug top connector CN84 (7 cond) or CN83 (4 cond) if necessary. 11) Remove and replace VR74 or VR81 (5 soldered pads) with hk part# HSR2A029Z. 12) Reassemble in reverse order

42、, taking care to replace all connectors, cable ties, and ground screw. 13) Power up receiver, and test volume control to assure setting no longer changes settings by itself, or when the volume knob is tapped. AVR230 AVR230 harman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info

43、 RadioFans.CN 收音机爱 好者资料库 Model Serial Number 120V STATUS ACTION AVR130 AN0006-01000 to AN0006-13800 Volume control may not track accurately when turned; erratic operation Change VR74 Rotary encoder AVR130 AN0006-13801 and above Modified By Factory NONE REQUIRED AVR230 AN0007-01000 to AN0007-11400 Vo

44、lume control may not track accurately when turned; erratic operation Change VR74 Rotary encoder AVR230 AN0007-11401 and above Modified By Factory NONE REQUIRED AVR330 AN0008-01000 to AN0008-08524 Volume control may not track accurately when turned; erratic operation Change VR74 Rotary encoder AVR330

45、 AN0008-08525 and above Modified By Factory NONE REQUIRED HK3380 AN0015-01000 to AN0015-02728 Volume control may not track accurately when turned; erratic operation Change VR81 Rotary encoder HK3380 AN0015-02729 and above Modified By Factory NONE REQUIRED HK3480 AN0016-01000 to AN0016-01864 Volume c

46、ontrol may not track accurately when turned; erratic operation Change VR81 Rotary encoder HK3480 AN0016-01865 and above Modified By Factory NONE REQUIRED AVR230 AVR230 harman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 收音机爱 好者资料库 harman/kardon TECH TIPSTECH TI

47、PS Troubleshooting tips and solutions to common service problems TIP# HKTT2004-03 Isolating audio problems in an AVR receiver Using 6/8 Direct In The following charts are used to help the tech quickly isolate audio problems in an AVR receiver. Use the following procedures to help find what is workin

48、g, then to quickly locate the problem area. Equipment needed: ? 1 set of (RCA) Y adaptors. ? Function/signal generator. ? Oscilloscope. Models covered: AVR210 AVR310 AVR220 AVR320 AVR520 AVR225 AVR125 AVR525 AVR130 AVR230 AVR330 AVR430 AVR630 Procedure: 1) Do a factory reset of the receiver. (This will eliminate any common micro processor problems.) Reset List can be found in this service manual. 2) Print the block diagram from the service manual. 3) With no inputs or speakers attached to the AVR turn on the receiver and turn the volume al