HarmanKardon-HK3380-rec-sm1维修电路原理图.pdf

harman/kardon HK3380 HK3380 STEREO RECEIVER SERVICE MANUAL CONTENTS ESD WARNING.2 LEAKAGE TESTING.3 SPECIFICATIONS .4 FRONT PANEL CONTROLS .5 REAR PANEL CONNECTIONS .8 REMOTE CONTROL FUNCTIONS .10 TROUBLESHOOTING GUIDE.12 PROCESSOR RESET.12 AMPLIFIER BIAS ADJUSTMENT.13 BULLETIN HK2003-10. .14 BULLETIN HK2004-02. .16 DISASSEMBLY PROCEDURES17 EXPLODED VIEW .20 BLOCK DIAGRAM.21 FRONT PANEL DISPLAY.22 IC DESCRIPTIONS/PINOUTS26 ELECTRICAL PARTS LIST .40 PCB DRAWINGS.45 SCHEMATICS.47 WIRING DIAGRAM.53 PACKAGE.54 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 8/2004 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 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 retuming 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 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 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 replacement 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 assembly 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 the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES devices. CAUTION : HK3380 HK3380 harman/kardon RadioFans.CN 2 1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal 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. 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 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 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.(Thistestshouldbe performedwiththe0.35voltRMSormoreisexcessiveandindicatesapotentialshockhazardwhichmustbecorrectedbeforereturningthe unittotheowner. HK3380 HK3380 harman/kardon RadioFans.CN 3 18 TECHNICAL SPECIFICATIONS HK 3380 TECHNICAL SPECIFICATIONS Audio Section Stereo Mode Continuous Average Power (FTC) 80 Watts per channel, 20Hz20kHz < 0.07% THD, both channels driven into 8 ohms 100 Watts per channel, 20Hz20kHz 80dB IF Rejection100dB Tuner Output Level1kHz, 100kHz, Dev 500mV AM Tuner Section Frequency Range520 1720kHz Signal-to-Noise Ratio40dB Usable SensitivityLoop 500V/M Distortion1kHz, 50% Mod 0.8% Selectivity10kHz, 25dB Video Section Television SystemNTSC/PAL/SECAM Signal FormatComposite Input Level1Vp-p Input Impedance75 ohms, unbalanced Sync PolarityNegative Output Level1Vp-p Output Impedance75 ohms, unbalanced Video Frequency Response 10Hz 10MHz General Power RequirementAC 120V/60Hz Power Consumption3W standby, 200W maximum (both channels driven) Dimension (Max)(Product)(Shipping) Width17.4 inches (442mm)21.5 inches (545mm) Height6.6 inches (168mm)9.9 inches (251mm) Depth15 inches (382mm)17.9 inches (455mm) Weight20.9 lb (9.48kg)25.1 lb (11.41kg) Depth measurement includes knobs, buttons and terminal connections. Height measurement includes feet and chassis. All features and specifications are subject to change without notice. Harman Kardon and Power for the Digital Revolution are registered trademarks of Harman International Industries, Incorporated. 4 H HK K3380 3380 harman/kardon FRONT-PANEL CONTROLS 5 FRONT-PANEL CONTROLSFRONT-PANEL CONTROLS SPEAKER 2 SPEAKER 1PHONO CD FM VID 1 TAPE M. VID 2 PRESET AMVID 3 AUTOTUNEDSTEREO 68 $* 79 ) ! #% press it again to turn the unit off.The Power Indicator 2 above the switch will initially turn red as the HK 3380 performs a self-check, and it will change to blue when the unit is on and ready for use. 2 Power Indicator: This LED will light 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 turned on, the indicator will briefly turn red, and then change to blue.A red indicator during normal operation means that the unit is in the Protect mode, and should be turned off and then checked for a possible speaker-wire short circuit. 3 Headphone Jack: This jack may be used to listen to the HK 3380s output through a pair of headphones. Be certain that the headphones have a standard 14 stereo phone plug. 4 Mute: Press this button to momentarily silence the speaker output of the HK 3380.The message MUTE will flash in the Main Information Display B, and the Mute Indicator K will blink. 5 Speaker 1 Selector: Press this button to turn the speakers connected to the Speaker 1Output Terminals on or off. 6 Phono Input Selector: Press this button to select the output of a turntable that is connected to the Phono Inputs. 7 Speaker 2 Selector: Press this button to turn the speakers connected to the Speaker 2Output Terminals on or off. 8 T-Mon Input Selector: Press this button to listen to the output of a tape recorder connected to the Tape Monitor Inputs. The dot to the left of the Tape Monitor Input Indicator D will flash to indi- cate that the input source is being monitored when the HK 3380 is connected to a three-head tape deck or another unit with off-head playback. See page 15 for more information on monitoring tape recordings. 9 Tuning Button: Press the left side of the button to tune lower-frequency stations and the right side of the button to tune higher-frequency stations.When a station with a strong signal is tuned, the Tuned Indicator I will light.A brief (1/2-second) press of the button will manually tune to the next frequency increment, while pressing and holding the button for a longer period will automatically tune to the next station with a signal strong enough for acceptable reception. ) CD Input Selector: Press this button to listen to the output of a CD player connected to the CD Audio Inputs . NOTE: To make it easier to follow the instructions that refer to this illustration, a larger copy may be downloaded from the Product Support section for this product at . 5 H HK K3380 3380 harman/kardon FRONT-PANEL CONTROLS 6 FRONT-PANEL CONTROLS ! Video 1 Input Selector: Press this button to listen to and/or view the output of a device connected to the Video 1 Inputs . Preset Scan: Press this button to automatically scan through the stations that have been programmed in the HK 3380s memory.The tuner will play five sec- onds of each station before moving to the next preset station.To stop the scan when the desired station is heard, press the button again. If no preset stations have been programmed into the HK 3380s memory, the message 0 PRESET will flash in the Main Information Display B when this button is pressed. (See page 15 for more information on the tuner mem- ory system.) # Video 2 Input Selector: Press this button to lis- ten to and/or view the output of a device connected to the Video 2 Inputs . $ Video 3 Input Selector: Press this button to listen to and/or view the output of a device connected to the Video 3 Inputs on either the front or rear panel. If devices are connected to both the front- and rear-panel Video 3 Inputs , then the device connected to the rear-panel Video 3 Inputs will be selected first, as indicated by the dot to the left of the Video 3 Input Indicator D being steadily lit.To select the device connected to the front-panel Video 3 Inputs , press the Video 3 Input Selector $ again so that the dot to the left of the Video 3 Input Indicator D flashes. Each subsequent press of the Video 3 Input Selector $ will toggle between the front and rear Video 3 Inputs . % Preset Selector: Press this button to step up or down through the list of stations that has been entered into the preset memory. If no preset stations have been programmed into the HK 3380s memory, the message 0 PRESET will flash in the Main Information Display B when this button is pressed. (See page15 for more information on tuner programming.) Dimmer Button: Press this button to dim the front-panel displays and indicators.The first press of the button will dim the displays to one-half normal brightness and turn off the blue light inside the Volume Control , but the Power Indicator 2 will remain lit.The next press of the Dimmer Button will turn off all displays, including the light inside the Volume Control , but the Power Indicator 2will remain lit to remind you that the unit is turned on. Press the button again to return the display to nor- mal brightness.When the panel is dimmed, it will return to normal brightness after the unit is turned off, then on again. 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 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 reassembly. 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. 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. 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, 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. 14 HK3380 HK3380 harman/kardon 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 Volume 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 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 control may not track accurately when turned; erratic operation Change VR81 Rotary encoder HK3480 AN0016-01865 and above Modified By Factory NONE REQUIRED 15 HK3380 HK3380 harman/kardon harman/kardon Service Bulletin Service bulletin # H/K2004-02 April 2004 Warranty labor rate: MINOR repair To: All harman/kardon Service Centers Model: HK3380/3480 Subject: Silence During Preset Scan - Upgrade In the event you receive an HK3380 or HK3480 stereo receiver with the complaint: “When the Preset Scan Function * is activated and the receiver cyles through the list of station presets, there is silence”, the unit is in need of a software upgrade. The unit should be sent to the following authorized service center equipped