HarmanKardon-Signature1.5-pwr-sm维修电路原理图.pdf

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1、Signature 1.5 Harman Consumer Group 250 Crossways Park Drive Woodbury, N.Y. 11797 1-800 645-7484 in the USA A Harman International Company Part No.: 1112-SIGNATURE1.5 Rev A 7/99 TECHNICAL MANUALTECHNICAL MANUAL Two Channel Amplifier RadioFans.CN 1 Two Channel AmplifierHarman KardonSIGNATURE 1.5 TABL

2、E OF CONTENTS SPECIFICATIONS.1 Signature 1.5 FRONT PANEL CONTROLS.2 FEATURES.2 REAR PANEL CONNECTIONS.3 INSTALLATION.4 OPERATION.6 IDLE CURRENT ADJUSTMENT FOR SIGNATURE 1.5.6 OUTPUT TRANSISTOR REPLACEMENT.6 ON THE SIGNATURE 1.5 TROUBLE SHOOTING.7 PROTECT MODE.7 Signature 1.5 MECHANICAL EXPLODED VIEW

3、.8 Signature 1.5 MECHANICAL PARTS LIST.9 Signature 1.5 PACKING EXPLODED VIEW.9 Signature 1.5 POWER SWITCH/INDICATOR PCBs .10 Signature 1.5 POWER AMPLIFIER PCB Rev B.11 Signature 1.5 Electrical Parts List.12 Signature 1.5 (120V) TRANSFORMER WIRING Rev A.14 Signature 1.5 (120V) TRANSFORMER WIRING Rev

4、B.15 Signature 1.5 (230V) TRANSFORMER WIRING Rev A.16 Signature 1.5 (230V) TRANSFORMER WIRING Rev B.17 INTEGRATED CIRCUITS.18 Signature 1.5 POWER SWITCH/INDICATOR.19 SCHEMATIC (1 of 1) Signature 1.5 POWER AMP SCHEMATIC (1 of 2).20 Signature 1.5 POWER AMP SCHEMATIC (2 of 2).21 SPECIFICATIONS Power Re

5、quirements: 120V version: . . . . . . . . . . . . . . . 120VAC, 50/60Hz 230V version: . . . . . . . . . . . . . . . 230VAC, 50Hz Power Output: . . . . . . . . . . . . . . . . . . . 2 x 200 watts 8 ohms 20Hz - 20kHz, 0.03% THD, Both Channels Driven 1 x 700watts 8 ohms 20Hz - 20kHz, 0.03% THD, Bridged

6、 Mono Mode 2 x 350 watts 4 ohms 20Hz - 20kHz, 0.03% THD, Both Channels Driven High-Current Capability: . . . . . . . . . . . . 130 Amps Frequency Response:. . . . . . . . . . . . . . 170kHz 3dB Power Bandwidth: . . . . . . . . . . . . . . . . 160kHz THD/IMD: . . . . . . . . . . . . . . . . . . . . .

7、 . -87 dBr between any two channels at maximum output Negative Feedback: . . . . . . . . . . . . . . . 25dB Input Impedance:. . . . . . . . . . . . . . . . . 33K ohms Input Sensitivity: . . . . . . . . . . . . . . . . . 1 volt for rated output Remote Trigger Voltage:. . . . . . . . . . . . 6 - 12 vo

8、lts DC (tip of plug must be “positive”(+) Remote Trigger Impedance: . . . . . . . . . 20K ohms Dimensions (H x W x D): . . . . . . . . . . . 7 x 17 x 15 inches 191 x 438 x 387 mm Weight:. . . . . . . . . . . . . . . . . . . . . . . . 47 lbs/21 kg RadioFans.CN 2 Two Channel AmplifierHarman KardonSIGN

9、ATURE 1.5 Signature 1.5 FRONT PANEL CONTROLS harman/kardon1.5 On/Off I G N A T U R E s e r i e s S 123 1 Power Switch: Press this switch to turn the 1.5 on for manual operation, or to place it in the Standby mode for automatic/remote turn-on when the 1.5 is connected to a device with a compatible tr

10、igger circuit. Note: Even when the Power Switch is off, the unit is still connected to the AC power supply. 2 Power-On Indicator: When the word SIGNATURE is illuminated in blue, the 1.5 is in a normal operating condition. 3 LED Indicator: The color of this indicator varies with the status of the 1.5

11、. It is red when the unit is off and in Manual Operation, amber in the Standby mode, and flashing green during Warm-Up. If the indicator flashes and alternates between red and amber, the 1.5 is in the Protect mode, indicating a problem in the unit or connections to the speakers. FEATURES The Harman

12、Kardon Signature 1.5 is a flexible, state-of-the-art audio power amplifier designed to deliver high performance for use in home theater or music reproduction applications.The following are among its many features: ?Designed and manufactured in the United States ?High-current output capability ?Two c

13、hannels 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 select Signature Series and Harman Kardon products or th

14、rough optional accessories. RadioFans.CN 3 Two Channel AmplifierHarman KardonSIGNATURE 1.5 REAR PANEL CONNECTIONS 5 Channel One Output: When the amplifier is being used in the two-channel (Stereo) mode, connect the right channel speaker to the positive (+) and negative (-) terminals. When the amplif

15、ier is being used in the Bridged Mono mode connect the Positive (+) terminal ONLY to the Negative (-) terminal on your speaker. 6 Channel One Input: When the amplifier is being used in the two-channel (Stereo) mode, connect the right channel output of your preamp or processor to this input jack. Whe

16、n the amplifier is being used in the Bridged Mono mode, this jack is not used. 7 Bridge/ Normal Switch: When the amplifier is used for two-channel stereo operation, this switch should be in the NORMAL position. For Bridged Mono use only, place the switch in the BRIDGE position. 8 Channel Two Output:

17、 When the amplifier is being used in the two-channel (Stereo) mode, connect the left channel speaker to the positive (+) and negative (-) terminals. When the amplifier is being used in the Bridged Mono mode connect the Positive (+) terminal ONLY to the Positive (+) terminal on your speaker. Importan

18、t Note: When the 1.5 is used in the Bridged Mono mode, do not connect a speaker with an impedance less than 8 ohms. 9 Channel Two/ Bridged Input: When the amplifier is being used in the two-channel (Stereo) mode, connect the left channel output of your preamp or processor to this input jack. When th

19、e amplifier is being used in the Bridged Mono mode, connect the output of your preamplifier or other line-level signal source to this jack. 10 Power Amp Trigger Input: Connect this jack to a matching 6- to 12-VDC trigger output on a compatible device to have the 1.5 automatically turn on from the St

20、andby mode when voltage is applied from the triggering unit. Note that a 3.5mm mono mini-plug with a positive tip should be used for the connection. 11 AC Power Cord: Connect this plug to a non-switched AC outlet. Due to the high-current draw of the Signature 1.5, it is NOT recommended that the acce

21、ssory outputs on the back of audio/video components be used to power this product. 4MIN?4MIN? 8MIN? SPEAKERSPEAKER ININ CHANNELONE (RIGHT)CHANNELTWO (LEFT BRIDGE) 12 AC INPUT AC 120V/60Hz 600W 67 8910115 BRIDGE IN POWER AMP TRIGGER IN BRIDGE NORMAL () BRIDGE () 4 Two Channel AmplifierHarman KardonSI

22、GNATURE 1.5 INSTALLATION Note: When making any connections between source components, processors or preamplifiers and the 1.5, or when making any connections to speakers, be certain that both the input device and the 1.5 are turned off. To ensure that there will be no unwanted signal transients that

23、 can damage equipment or speakers, it is always best to unplug all equipment from AC power outlets before making any connections. Modern electronic products often have a “standby” mode that may be activated even though the product may appear to be turned off. Power Control Connections The Signature

24、Series 1.5 amplifier features a built-in remote turn-on system that will automatically turn on the amplifier when another device in the system is switched on. To activate this system, this amplifier must be used in conjunction with compatible Signature Series or Harman Kardon products or other appro

25、ved devices. Note: Before making any connections to remote trigger outlets, it is critical that both the 1.5 and the triggering device be turned off. For additional safety, it is best that these connections be made while both products are unplugged from AC power sources. Remote Turn-On with the Sign

26、ature Series 2.0 and Compatible Harman Kardon Products Connect one end of the accessory cable supplied with the 2.0 to the Power Amp Trigger In jackon the rear of the 1.5. Connect the other end to the TRIGGER OUTPUT jack on the 2.0. Remote Turn-On Using an External AC-to-DC Converter If the 1.5 is n

27、ot used with a compatible Harman Kardon product, it is still possible to activate the unit for automatic turn-on. To control the amplifier in this manner you will need a small UL/CSA-approved class-2 AC-to-DC power converter capable of delivering a 6- to 12-volt DC signal. The DC voltage should term

28、inate in a standard 3.5 mm mono miniplug, with the tip of the plug “positive” (+). This type of converter may be obtained as a “Power Adapter” from many electronics retailers. Consult your dealer for further information. Plug the AC adapter into a switched outlet that will be activated when you wish

29、 to have the amplifier turn on. This may be the switched outlet at the rear of an AV receiver or other audio equipment, an AC outlet that is part of a current sensing control unit activated by a pre-amp or surround processor or a switched AC wall outlet. Connect the 3.5 mm miniplug from the power co

30、nverter to the Power Amp Trigger In jackon the rear of the 1.5. Audio System Connections As a general rule, avoid running any input signal or speaker wire connections next to or parallel with AC power cords. This may cause undesired hum or other interference that will greatly degrade signal performa

31、nce. When making input connections with RCA-type plugs on interconnect cables, make certain to gently but firmly insert the plugs into the jacks on the rear of the 1.5. Loose connections can cause intermittent sound and may damage your speakers. Input Connections Stereo Mode: For conventional two-ch

32、annel stereo operation, connect the right channel output of your pre-amp or processor to the Channel One Inputand the left channel output to the Channel Two Input. Make certain that the Bridge/ Normal Switchis in the NORMAL position. Bridged Mono Mode: To use the 1.5 as a single-channel, mono amplif

33、ier, connect the line-level output of your preamp, processor or other signal source to the Channel Two/ Bridged Input connectoron the rear panel. No connection is required to the Channel One connector in this mode. Make certain that the Bridge/ Normal Switchis in the BRIDGE position. Output Connecti

34、ons The final step of the installation process is to connect the amplifier to your speakers using high-quality cable. A pair of binding posts is provided for each channel output. These posts will accept bare wire or banana-type plugs. To ensure that the high-quality signals produced by the 1.5 are c

35、arried to your speakers without loss of clarity or resolution, we recommend that you use high-quality speaker cable. Many brands of cable are available, and the choice of cable may be influenced by the distance between your speakers and the amplifier, the type of speakers you use, personal preferenc

36、es and other factors. Your dealer or installer is a valuable resource to consult in selecting a proper cable for connections between your amplifier and speakers. Regardless of the brand or type of cable selected, we recommend that you use a cable constructed of high-strand-count copper with a gauge

37、of 14 or smaller. When specifying cable, remember that the smaller the number, the thicker the cable. 10 10 6 9 7 9 7 5 Two Channel AmplifierHarman KardonSIGNATURE 1.5 Cable with a gauge of 16 may be used for short runs of less than ten feet. We do not recommend the use of cables with an AWG equival

38、ent of 18 or higher due to the power loss and degradation in performance that will occur. Cables run inside walls should have the appropriate markings to indicate listing with UL (“CL-2/CL-3”), CSA (“FT-4”) or appropriate safety agency standards that may be required in your area. Questions about run

39、ning cables inside walls should be referred to your installer or a licensed electrical contractor who is familiar with the NEC and/or the applicable building or electrical codes in your area. Two-Channel/Stereo Systems: When installing a two-channel (stereo) system, connect the positive (+) and nega

40、tive (-) terminals from the right and left speakers to the matching terminalson the rear panel of the 1.5. Make certain that the Bridge/Normal Switchis in the NORMALposition.Whenthe1.5isusedfor two-channel/stereo operation, speakers with an impedance of no less than 4 ohms may be used. Bridged Mono

41、Applications: To use the 1.5 as a single-channel, mono amplifier, connect the (+) terminal on your speaker to the (+) terminal on the Channel Two Outputon the 1.5. Connect the negative (-) terminal on your speaker to the positive (+) terminal on the Channel One Output. Note: For mono applications, n

42、o connections are made to the negative (-) speaker output terminals on the 1.5. Make certain that the Bridge/Normal Switchis in the BRIDGE position. Important Note: When the 1.5 is used in the Bridged Mono mode, do not use speakers with an impedance of less than 8 ohms. When making speaker connectio

43、ns, note that one conductor of the speaker cable may have no markings or an indication of (-) for negative polarity, and the other will have a red line, brand-name markings, a colored thread or some other positive-polarity indication (+). The wire with the positive indication should be connected to

44、the red terminals on both the 1.5 and your speakers. The negative wire should be connected to the black terminal on the 1.5 and the speakers. If bare wire is used for connections, strip approximately 3/4”(20 mm) of insulation from the end of each wire and carefully twist the strands of each conducto

45、r together. Be careful not to cut the individual strands or twist them off; for optimal performance, all strands must be used. Next, loosen the knobs of the speaker output terminals far enough so that the cap moves back on its threads past the holes at the rear of the terminal. Making certain that y

46、ou observe the correct polarity for the type of system being installed (Stereo or Bridged Mono), pass the exposed wire through the hole until the wire is visible from the bottom end. Holding the wire in place, twist the cap back so that the connection is secured. Do not overtighten or use tools, as

47、this may damage the plastic terminal cap or break the delicate wire strands and decrease system performance. Important Note: When making speaker wire connections, be certain that none of the strands from one lead touch any other lead. This will cause a short circuit and may damage your amplifier or speakers. Damage from short circuits caused in this manner is not covered by the pr