HarmanKardon-Signature1_5-pwr-sm维修电路原理图.pdf

Signature 1.5Harman Consumer Group250 Crossways Park DriveWoodbury, N.Y. 117971-800 645-7484 in the USAA Harman International CompanyPart No.: 1112-SIGNATURE1.5 Rev A 7/99TECHNICAL MANUALTECHNICAL MANUALTwo Channel AmplifierRadioFans.CN 收音机爱 好者资料库1Two Channel AmplifierHarman KardonSIGNATURE 1.5TABLE OF CONTENTSSPECIFICATIONS.1Signature 1.5 FRONT PANEL CONTROLS.2FEATURES.2REAR PANEL CONNECTIONS.3INSTALLATION.4OPERATION.6IDLE CURRENT ADJUSTMENT FOR SIGNATURE 1.5.6OUTPUT TRANSISTOR REPLACEMENT.6ON THE SIGNATURE 1.5TROUBLE SHOOTING.7PROTECT MODE.7Signature 1.5 MECHANICAL EXPLODED VIEW.8Signature 1.5 MECHANICAL PARTS LIST.9Signature 1.5 PACKING EXPLODED VIEW.9Signature 1.5 POWER SWITCH/INDICATOR PCBs .10Signature 1.5 POWER AMPLIFIER PCB Rev B.11Signature 1.5 Electrical Parts List.12Signature 1.5 (120V) TRANSFORMER WIRING Rev A.14Signature 1.5 (120V) TRANSFORMER WIRING Rev B.15Signature 1.5 (230V) TRANSFORMER WIRING Rev A.16Signature 1.5 (230V) TRANSFORMER WIRING Rev B.17INTEGRATED CIRCUITS.18Signature 1.5 POWER SWITCH/INDICATOR.19SCHEMATIC (1 of 1)Signature 1.5 POWER AMP SCHEMATIC (1 of 2).20Signature 1.5 POWER AMP SCHEMATIC (2 of 2).21SPECIFICATIONSPower Requirements:120V version: . . . . . . . . . . . . . . . 120VAC, 50/60Hz230V version: . . . . . . . . . . . . . . . 230VAC, 50HzPower Output: . . . . . . . . . . . . . . . . . . . 2 x 200 watts 8 ohms20Hz - 20kHz, 0.03% THD, Both Channels Driven1 x 700watts 8 ohms20Hz - 20kHz, 0.03% THD, Bridged Mono Mode2 x 350 watts 4 ohms20Hz - 20kHz, 0.03% THD, Both Channels DrivenHigh-Current Capability: . . . . . . . . . . . . 130 AmpsFrequency Response:. . . . . . . . . . . . . . 170kHz 3dBPower Bandwidth: . . . . . . . . . . . . . . . . 160kHzTHD/IMD: . . . . . . . . . . . . . . . . . . . . . . -87 dBr between any two channels at maximum outputNegative Feedback: . . . . . . . . . . . . . . . 25dBInput Impedance:. . . . . . . . . . . . . . . . . 33K ohmsInput Sensitivity: . . . . . . . . . . . . . . . . . 1 volt for rated outputRemote Trigger Voltage:. . . . . . . . . . . . 6 - 12 volts DC (tip of plug must be “positive”(+)Remote Trigger Impedance: . . . . . . . . . 20K ohmsDimensions (H x W x D): . . . . . . . . . . . 7 x 17 x 15 inches191 x 438 x 387 mmWeight:. . . . . . . . . . . . . . . . . . . . . . . . 47 lbs/21 kgRadioFans.CN 收音机爱 好者资料库2Two Channel AmplifierHarman KardonSIGNATURE 1.5Signature 1.5 FRONT PANEL CONTROLSharman/kardon1.5On/OffI G N A T U R Es e r i e sS1231 Power Switch: Press this switch to turn the 1.5 on formanual operation, or to place it in the Standby mode forautomatic/remote turn-on when the 1.5 is connected to adevice with a compatible trigger circuit.Note: Even when the Power Switch is off, the unit is stillconnected to the AC power supply.2 Power-On Indicator: When the word SIGNATURE isilluminated in blue, the 1.5 is in a normal operatingcondition.3 LED Indicator: The color of this indicator varies with thestatus of the 1.5. It is red when the unit is off and in ManualOperation, amber in the Standby mode, and flashing greenduring Warm-Up. If the indicator flashes and alternatesbetween red and amber, the 1.5 is in the Protect mode,indicating a problem in the unit or connections to thespeakers.FEATURESThe Harman Kardon Signature 1.5 is a flexible, state-of-the-art audio power amplifier designed to deliver highperformance for use in home theater or music reproduction applications.The following are among its manyfeatures:?Designed and manufactured in the UnitedStates?High-current output capability?Two channels with bridgeable outputs?Ultrawide bandwidth design?Low negative feedback?Low harmonic and intermodulation distortion?Massive heat sinks for quiet convection cooling?High-current power supply?Remote turn-on/turn-off circuitry with selectSignature Series and Harman Kardon productsor through optional accessories.3Two Channel AmplifierHarman KardonSIGNATURE 1.5REAR PANEL CONNECTIONS5 Channel One Output: When the amplifier is being used inthe two-channel (Stereo) mode, connect the right channelspeaker to the positive (+) and negative (-) terminals. Whenthe amplifier is being used in the Bridged Mono modeconnect the Positive (+) terminal ONLY to the Negative (-)terminal on your speaker.6 Channel One Input: When the amplifier is being used inthe two-channel (Stereo) mode, connect the right channeloutput of your preamp or processor to this input jack. Whenthe amplifier is being used in the Bridged Mono mode, thisjack is not used.7 Bridge/ Normal Switch: When the amplifier is used fortwo-channel stereo operation, this switch should be in theNORMAL position. For Bridged Mono use only, place theswitch in the BRIDGE position.8 Channel Two Output: When the amplifier is being usedin the two-channel (Stereo) mode, connect the left channelspeaker to the positive (+) and negative (-) terminals.When the amplifier is being used in the Bridged Mono modeconnect the Positive (+) terminal ONLY to the Positive (+)terminal on your speaker.Important Note: When the 1.5 is used in the Bridged Monomode, do not connect a speaker with an impedance lessthan 8 ohms.9 Channel Two/ Bridged Input: When the amplifier isbeing used in the two-channel (Stereo) mode, connect theleft channel output of your preamp or processor to this inputjack. When the amplifier is being used in the Bridged Monomode, connect the output of your preamplifier or otherline-level signal source to this jack.10 Power Amp Trigger Input: Connect this jack to amatching 6- to 12-VDC trigger output on a compatibledevice to have the 1.5 automatically turn on from theStandby mode when voltage is applied from the triggeringunit. Note that a 3.5mm mono mini-plug with a positive tipshould be used for the connection.11 AC Power Cord: Connect this plug to a non-switchedAC outlet. Due to the high-current draw of the Signature 1.5,it is NOT recommended that the accessory outputs on theback of audio/video components be used to power thisproduct.4MIN?4MIN?8MIN?SPEAKERSPEAKERININCHANNELONE (RIGHT)CHANNELTWO (LEFT BRIDGE)12AC INPUTAC 120V/60Hz 600W67 8910115BRIDGE INPOWER AMPTRIGGER INBRIDGENORMAL() BRIDGE ()4Two Channel AmplifierHarman KardonSIGNATURE 1.5INSTALLATIONNote: When making any connections between sourcecomponents, processors or preamplifiers and the 1.5, orwhen making any connections to speakers, be certain thatboth the input device and the 1.5 are turned off. To ensurethat there will be no unwanted signal transients that candamage equipment or speakers, it is always best to unplugall equipment from AC power outlets before making anyconnections. Modern electronic products often have a“standby” mode that may be activated even though theproduct may appear to be turned off.Power Control ConnectionsThe Signature Series 1.5 amplifier features a built-in remoteturn-on system that will automatically turn on the amplifierwhen another device in the system is switched on. Toactivate this system, this amplifier must be used inconjunction with compatible Signature Series or HarmanKardon products or other approved devices.Note: Before making any connections to remote triggeroutlets, it is critical that both the 1.5 and the triggeringdevice be turned off. For additional safety, it is best thatthese connections be made while both products areunplugged from AC power sources.Remote Turn-On with the Signature Series 2.0 andCompatible Harman Kardon ProductsConnect one end of the accessory cable supplied with the2.0 to the Power Amp Trigger In jackon the rear of the1.5. Connect the other end to the TRIGGER OUTPUT jackon the 2.0.Remote Turn-On Using an External AC-to-DC ConverterIf the 1.5 is not used with a compatible Harman Kardonproduct, it is still possible to activate the unit for automaticturn-on.To control the amplifier in this manner you will need a smallUL/CSA-approved class-2 AC-to-DC power convertercapable of delivering a 6- to 12-volt DC signal. The DCvoltage should terminate in a standard 3.5 mm monominiplug, with the tip of the plug “positive” (+). This type ofconverter may be obtained as a “Power Adapter” from manyelectronics retailers. Consult your dealer for furtherinformation.Plug the AC adapter into a switched outlet that will beactivated when you wish to have the amplifier turn on. Thismay be the switched outlet at the rear of an AV receiver orother audio equipment, an AC outlet that is part of a currentsensing control unit activated by a pre-amp or surroundprocessor or a switched AC wall outlet.Connect the 3.5 mm miniplug from the power converter tothe Power Amp Trigger In jackon the rear of the 1.5.Audio System ConnectionsAs a general rule, avoid running any input signal or speakerwire connections next to or parallel with AC power cords.This may cause undesired hum or other interference thatwill greatly degrade signal performance.When making input connections with RCA-type plugs oninterconnect cables, make certain to gently but firmly insertthe plugs into the jacks on the rear of the 1.5. Looseconnections can cause intermittent sound and may damageyour speakers.Input ConnectionsStereo Mode: For conventional two-channel stereooperation, connect the right channel output of your pre-ampor processor to the Channel One Inputand the leftchannel output to the Channel Two Input. Make certainthat the Bridge/ Normal Switchis in the NORMALposition.Bridged Mono Mode: To use the 1.5 as a single-channel,mono amplifier, connect the line-level output of yourpreamp, processor or other signal source to the ChannelTwo/ Bridged Input connectoron the rear panel. Noconnection is required to the Channel One connector in thismode. Make certain that the Bridge/ Normal Switchisin the BRIDGE position.Output ConnectionsThe final step of the installation process is to connect theamplifier to your speakers using high-quality cable. A pair ofbinding posts is provided for each channel output. Theseposts will accept bare wire or banana-type plugs. To ensurethat the high-quality signals produced by the 1.5 are carriedto your speakers without loss of clarity or resolution, werecommend that you use high-quality speaker cable. Manybrands of cable are available, and the choice of cable maybe influenced by the distance between your speakers andthe amplifier, the type of speakers you use, personalpreferences and other factors. Your dealer or installer is avaluable resource to consult in selecting a proper cable forconnections between your amplifier and speakers.Regardless of the brand or type of cable selected, werecommend that you use a cable constructed ofhigh-strand-count copper with a gauge of 14 or smaller.When specifying cable, remember that the smaller thenumber, the thicker the cable.1010697975Two Channel AmplifierHarman KardonSIGNATURE 1.5Cable with a gauge of 16 may be used for short runs of lessthan ten feet. We do not recommend the use of cables withan AWG equivalent of 18 or higher due to the power lossand degradation in performance that will occur.Cables run inside walls should have the appropriatemarkings to indicate listing with UL (“CL-2/CL-3”), CSA(“FT-4”) or appropriate safety agency standards that may berequired in your area. Questions about running cablesinside walls should be referred to your installer or a licensedelectrical contractor who is familiar with the NEC and/or theapplicable building or electrical codes in your area.Two-Channel/Stereo Systems: When installing atwo-channel (stereo) system, connect the positive (+) andnegative (-) terminals from the right and left speakers to thematching terminalson the rear panel of the 1.5. Makecertain that the Bridge/Normal Switchis in theNORMALposition.Whenthe1.5isusedfortwo-channel/stereo operation, speakers with an impedanceof no less than 4 ohms may be used.Bridged Mono Applications: To use the 1.5 as asingle-channel, mono amplifier, connect the (+) terminal onyour speaker to the (+) terminal on the Channel TwoOutputon the 1.5. Connect the negative (-) terminal onyour speaker to the positive (+) terminal on the ChannelOne Output.Note: For mono applications, no connections are made tothe negative (-) speaker output terminals on the 1.5. Makecertain that the Bridge/Normal Switchis in the BRIDGEposition.Important Note: When the 1.5 is used in the Bridged Monomode, do not use speakers with an impedance of less than8 ohms.When making speaker connections, note that oneconductor of the speaker cable may have no markings or anindication of (-) for negative polarity, and the other will havea red line, brand-name markings, a colored thread or someother positive-polarity indication (+).The wire with the positive indication should be connected tothe red terminals on both the 1.5 and your speakers. Thenegative wire should be connected to the black terminal onthe 1.5 and the speakers.If bare wire is used for connections, strip approximately3/4”(20 mm) of insulation from the end of each wire andcarefully twist the strands of each conductor together. Becareful not to cut the individual strands or twist them off; foroptimal performance, all strands must be used.Next, loosen the knobs of the speaker output terminals farenough so that the cap moves back on its threads past theholes at the rear of the terminal. Making certain that youobserve the correct polarity for the type of system beinginstalled (Stereo or Bridged Mono), pass the exposed wirethrough the hole until the wire is visible from the bottom end.Holding the wire in place, twist the cap back so that theconnection is secured. Do not overtighten or use tools, asthis may damage the plastic terminal cap or break thedelicate wire strands and decrease system performance.Important Note: When making speaker wire connections,be certain that none of the strands from one lead touch anyother lead. This will cause a short circuit and may damageyour amplifier or speakers. Damage from short circuitscaused in this manner is not covered by the productwarranty.Connections may also be made using spade lugs orstandard 4 mm OD banana plugs. Before using abanana-type jack, make certain that the plastic screw capson the 1.5 are firmly tightened by turning them clockwiseuntil they are snug against the chassis. This will ensure thatthe maximum surface area of the plug is in contact with thejack. Once the wire has been attached to the banana plugfollowing the plug manufacturers instructions, simply insertthe banana plug into the hole provided on the rear of thecolored screw caps on the terminal posts. Be certain toobserve proper polarity.Finally, run the cables to the speaker locations. It is highlyrecommended that the length of cable connecting any pairof speakers be identical. For example, make certain that thecable length connecting left and right front or left and rightrear (surround) speakers is identical, even though onespeaker may be physically closer to the amplifier than theother. Do not coil any excess cable, as this may become aninductor that creates frequency response variations in yoursystem.Connect the wires to the speakers, again being certain toobser