Linn-Majik-pwr-sm 电路图 维修手册.pdf

《Linn-Majik-pwr-sm 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Linn-Majik-pwr-sm 电路图 维修手册.pdf（24页珍藏版）》请在收音机爱好者资料库上搜索。

1、LINN SERVICE MANUAL MAJIK AMPLIFIER & WAKONDA PRE-AMPLIFIER RadioFans.CN 收音机爱 好者资料库 Page 5.602 REVISION 14: MAJIK and WAKONDASept 95 Copyright 1995 by Linn Products Limited. All Rights Reserved. RadioFans.CN 收音机爱 好者资料库 Page 5.603 REVISION 14: MAJIK and WAKONDASept 95 Copyright 1995 by Linn Products

2、Limited. All Rights Reserved. INDEX Contents:Page: Introduction Installation5.604 Positioning5.605 Useful Information Customising (Configuring) options Expansion5.606 Remote control problems Notes Warning!5.607 Configuring : Majik5.608 Wakonda5.609 Installing the AKTIV CROSSOVER MODULES5.610 Install

3、ing the KUDOS SNEAKY TUNER5.616 Installing the KNEKT SNEAKY DRIVER/RECEIVER5.617 Installing the KNEKT RCU/S CONTROL PANEL5.618 Specifications Majik5.622 Wakonda5.623 History Majik and Wakonda5.624 RadioFans.CN 收音机爱 好者资料库 Page 5.604 REVISION 14: MAJIK and WAKONDASept 95 Copyright 1995 by Linn Product

4、s Limited. All Rights Reserved. INTRODUCTION INTRODUCTION Both the Linn MAJIK control amplifier and WAKONDA pre- amplifier use microprocessor control, Linns solid state input switching and volume control technology, and the latest surface mount manufacturing techniques to deliver unprecedented audio

5、 performance and ease of use. They accommodate six input sources, and provide outputs for two tape decks. You may record any source while listening to the same or any other source. For the purposes of this manual, the Majik and Wakonda are the same, unless otherwise stated, except when refering to t

6、he POWER- AMP section, which is only fitted to the MAJIK Separate pre-amp output and power amp inputs (MAJIK ONLY) provide exceptional flexibility, and offer the possibility of a neat and economical upgrade to active systems. Two sets of speaker sockets facilitate bi-wiring. Options include multi-ro

7、om modules and a tuner which simply plugs into the internal expansion port known as the Sneaky slot. Like any electronic product, the MAJIK and WAKONDA will perform at their best when used with the highest quality source. The better the sound from your turntable, tuner or CD player, the better the s

8、ound you will hear from the other components in the system. INSTALLATION Unpack the product and retain the packing for future transportation. Check the contents are as follows: MAJIK or WAKONDARemote handset Owners manualMains lead 1 spare fuse. VOLTAGE SELECTION - MAJIK This is factory set for a 24

9、0 Volts mains supply and must not be connected to a mains supply before it is adjusted for the local voltage, and fitted with the appropriate fuse. To set the voltage, rotate the voltage selector on the underside of the product until the appropriate voltage is aligned with the white marker. To fit t

10、he fuse, first identify the correct fuse for the local voltageMAJIK 3.15A anti-surge for 220V and 240V, 6.3A anti-surgefor 100V and 120V. VOLTAGE SELECTION - WAKONDA As the WAKONDA is fitted with a Brilliant switched mode power supply, voltage selection is automatic. Fuse: WAKONDA T500 mA for all in

11、put voltages (90-264 V AC) Pull open the fuse-drawer at the left-hand side of the mains inlet, insert the fuse in the rear compartment and close the drawer. IMPORTANT NOTE FOR UK USE: The wires in this mains lead use the following colour code: Green-and-yellow:Earth Blue:Neutral Brown:Live As the co

12、lours of the wires in the mains lead of this appliance may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows: The wire which is coloured green-and-yellow must be connected to the terminal in the plug which is marked with the letter E, or by the eart

13、h symbol or coloured green or green-and-yellow. Page 5.605 REVISION 14: MAJIK and WAKONDASept 95 Copyright 1995 by Linn Products Limited. All Rights Reserved. INTRODUCTION The wire which is coloured blue must be connected to the terminal which is marked with the letter N or coloured black. The wire

14、which is coloured brown must be connected to the terminal which is marked with the letter L or coloured red. POSITIONING You can put your MAJIK/WAKONDA more or less anywhere you find convenient, but there are a few considerations which may affect your choice. Turntables have short signal leads, so t

15、he MAJIK/WAKONDA will need to be close to your turntable. However, if they are too close together the cartridge may pick up hum from the amplifier, especially if it is a moving coil cartridge. 30 cm between the amplifier and the cartridge is usually enough to avoid such problems. Some cassette decks

16、 may also pick up hum if they are too close to the MAJIK/WAKONDA The MAJIK is a high-powered amplifier in a compact case and in normal use the case will get quite warm. So allow a minimum of a few centimetres of space around the amplifier, and ample access for air to circulate, and in particular don

17、t block the vent holes on the top. No harm will come to your MAJIK if it has inadequate ventilation - it will simply turn itself off until the temperature drops. WARNING: Be careful about putting it on or close to anything delicate or expensive which may be affected by the heat. USEFUL INFORMATION L

18、OAD IMPEDANCE The MAJIK will drive two pairs of 8 Ohm loudspeakers, or one pair of 4 Ohm loudspeakers. You can use the MAJIK to drive two pairs of 4 Ohm loudspeakers if only moderate listening levels are required as this can cause the over-current protection to trip at moderate volume levels. Howeve

19、r, this will in no way damage the MAJIK. It is not possible to switch between the speakers as they will be wired in parallel on the speaker outputs. PROTECTION The MAJIK provides fully automatic overload protection against both over-current and overheating. If it operates, the audio signal mutes unt

20、il the power amplifier has reset itself, and un-mutes within a few seconds. The volume is reduced by 1 dB, to reduce the likelihood of further overloads. If overload persists, the volume will be reduced by a further 1 dB, and so on until no overload condition is sensed. CUSTOMISING THE MAJIK There a

21、re three ways you can vary the behaviour of THE MAJIK from standard: - the display can be set to remain on all the time (MAJIK/WAKONDA) - the start-up volume can be set to 15 instead of 30 (MAJIK/WAKONDA) - the power amp can be disabled to save power when the MAJIK- is being used as a pre-amp only.(

22、MAJIK ONLY) This is simply done by removing the sleeve and fitting a shorting link across specific pins. Please see the section on how do this. PHASE The MAJIK and WAKONDA pre-amplifiers preserve the phase of the signal to the power amplifier. Therefore the wiring from the power amplifier to the spe

23、akers does not require its polarity inverted. Page 5.606 REVISION 14: MAJIK and WAKONDASept 95 Copyright 1995 by Linn Products Limited. All Rights Reserved. INTRODUCTION EXPANSION We designed the MAJIK and WAKONDA to last for many years and to give your customers unique opportunities to extend their

24、 capabilities as needs evolve and resources allow. At the rear of the MAJIK, there is an expansion slot, known as the SNEAKY slot, into which one of a range of SNEAKY add-on modules may by fitted: A SNEAKY KUDOS tuner module for high-quality radio reception. A SNEAKY AKTAMP active crossover board wh

25、ich, with additional ampli- fiers can be used to drive Aktiv speakers. SNEAKY KNEKT Either a Line Driver module which will expand the MAJIK / WAKONDA into the heart of a multi-room system feeding other rooms in the house or a Local Receiver module could be fitted so that the MAJIK / WAKONDA can inte

26、grate with a Linn multi-room system elsewhere in the house. PROBLEMS Rarely, some types of computer monitors and high-frequency or low-energy fluorescent lights can affect the infra-red control range of the MAJIK, or make it behave erratically. Such problems are very rare and your retailer will advi

27、se on a solution. MAINTENANCE FUSE PROTECTION A fuse is fitted to the power input socket on the rear of the MAJIK. The fuse holder also contains one spare fuse. The Linn MAJIK amplifier is designed for a long life and any servicing should be carried out by an authorised retailer. CLEANING Dust or fi

28、nger marks can be removed using a soft damp cloth. Avoid the use of domestic cleaning products. Notes: 1.KUDOS: When fitting the KUDOS SNEAKY the display sleep function must be disabled on the MAJIK main board. The KUDOS then controls this function and cannot be configured to remain on. 2.MULTI-ROOM

29、: If using the Majik in a Multiroom system with an RCU in the same room you will need to disable the IR receiver in the Majik. This is simply done by fitting a Link across pins which are located in the Sneaky Board and are clearly marked. 3.SNEAKY SLOT: Always disconnect the MAJIK/WAKONDA from every

30、thing, ESPECIALLY MAINS, before fitting a SNEAKY module or carrying out any configurations. Page 5.607 REVISION 14: MAJIK and WAKONDASept 95 Copyright 1995 by Linn Products Limited. All Rights Reserved. WARNING WARNING REMOVE LINKS MAJIK AMPLIFIERS DAMAGED IN THIS WAY WILL INCUR FULL PARTS AND LABOU

31、R CHARGES! Please note when Bi-Amping ANY Majik that each of the two methods shown will cause the Majik to suffer terminal damage Whilst the protection was improved for the Majik in Feb. 1995, NO amplifier likes to be back driven. Please ensure that ALL THE AMPLIFIERS ARE SWITCHED OFF and all speake

32、r links are removed before plugging or unplugging the connectors into speakers during installation OR demonstrations. Page 5.608 REVISION 14: MAJIK and WAKONDASept 95 Copyright 1995 by Linn Products Limited. All Rights Reserved. MAJIK-IP only: Move shorting link to change from MM to MC. MAJIK Board

33、revision L 4 and L 5. To customise fit Shorting Links (Linn Part Number CONN 421) as shown: 1Display ON all the time. 2Start volume 15 (factory setting 30). Please note: Last four pins not used. Board Revision 5 only: 3.Fit 2 links to disable Power amplifier. (Power save mode ) MAJIK From Board revi

34、sion L6 upward To customise fit Shorting Links (Linn Part Number CONN 421) as shown: 1 & 2 Disable the power-AMP. (Power save mode ) 3.Display ON all the time. 4.Start volume 15 (factory setting 30). Please note: Last two pins not used. MAJIK-IP only: Move shorting link to change from MM to MC. CONF

35、IGURING THE MAJIK Page 5.609 REVISION 14: MAJIK and WAKONDASept 95 Copyright 1995 by Linn Products Limited. All Rights Reserved. WAKONDA From Board revision L6 upward To customise fit Shorting Links (Linn Part Number CONN 421) as shown: 1.Display ON all the time. 2.Start volume 15 (factory setting 3

36、0). Please note: Last two pins not used. CONFIGURING THE WAKONDA WAKONDA-P only: Move shorting link Page 5.610 REVISION 14: MAJIK and WAKONDASept 95 Copyright 1995 by Linn Products Limited. All Rights Reserved. INSTALLING AKTIV MODULES IN THE MAJIK / WAKONDA Time required: 30 min, approx. INSTALLING

37、 AKTIV MODULES Parts Required: 1 x Set Aktiv Modules. (See contents list in box.) Tools Required: 1 x No 2 Pozi (or Supa) screwdriver Antistatic work station Before starting, you must ensure that you have a clean workbench and take the necessary anti-static precautions. Always wear an anti-static wr

38、ist strap. Refer to the Service Manual (5.8) for full details of the necessary working practices. Always disconnect the MAJIK/WAKONDA from everything, ESPE- CIALLY MAINS, before fitting a SNEAKY module. 1Remove the sleeve from the MAJIK and place the amplifier with the back panel facing you. 2Remove

39、 the 2 screws on the back panel and remove the SNEAKY blanking plate. Give the blanking plate to the customer to retain for future use. 3Take 2 of the wiring harnesses, which have a 5 way connector at one end and a 2 and 3 way connector at the other end. Fit the 2 and 3 way connectors to the MAJIK m

40、ain board. Make sure they are pressed fully home. 4.Fit the two long standoffs to the MAJIK main board. Make sure the standoffs are fitted the correct way round. right left Page 5.611 REVISION 14: MAJIK and WAKONDASept 95 Copyright 1995 by Linn Products Limited. All Rights Reserved. 5.Fit the SNEAKY

41、 Aktiv module tray. Make sure the standoffs click into position.Refit the screws in the back panel. IMPORTANT: From March 1994 the SNEAKY AKTIV MODULE TRAY is attached to the back panel by two MECH 001 bolts which fit into threaded inserts in the module tray. Please use the two MECH 001 bolts provid

42、ed. 6.Fit the plastic spacers to the tray. 7.Fit the 5 way connectors of each wiring harness to the AKTIV modules. Make sure that they are fully pressed home. Identify the channel each board is wired to by ticking the appropriate box on each board. Use a felt pen. 8.Fit the modules onto the tray. Th

43、e big screening cans are fitted toward the tray. Make sure the spacers click into position. INSTALLING AKTIV MODULES IN THE MAJIK- / WAKONDA leftright Remove Links ! Page 5.612 REVISION 14: MAJIK and WAKONDASept 95 Copyright 1995 by Linn Products Limited. All Rights Reserved. 9.Stick the correct ide

44、ntification label onto the lower left hand corner of the SNEAKY Aktiv module tray. 10.Remove the shorting links between the PRE-OUT and POWER-IN Sockets. 11.If the MAJIK is being used as the pre-amp in the system, fit 2 dust caps over the POWER-IN sockets. Alternatively, if the MAJIK is being used e

45、xclusively as the power-amp in the system, fit 2 dust caps over the PRE-OUT sockets. When the Aktiv cards are fitted in the SNEAKY slot they form the link between the Pre-Amp and the Power -Amp sections of the Majik. NEVER LINK THE PRE AND POWER SECTIONS EXTERNALLY (EITHER DIRECT OR THROUGH ANOTHER

46、POWER-AMP) WHEN AKTIV BOARDS ARE FITTED AS DAMAGE WILL RESULT. 12.Refit the sleeve. INSTALLING AKTIV MODULES IN THE MAJIK- / WAKONDA REMOVE LINKS OR BANG! LABEL Page 5.613 REVISION 14: MAJIK and WAKONDASept 95 Copyright 1995 by Linn Products Limited. All Rights Reserved. INSTALLING SNEAKY KUDOS MODU

47、LE IN THE MAJIK / WAKONDA STAND-OFFS EXTENSION SOCKET INSTALLING SNEAKY KUDOS 1. Unpack and check the contents of your KUDOS Sneaky upgrade kit. (See contents list in box.) Tools required:No.1 Pozidrive screwdriver Small Pliers Digital Multimeter Before starting, you must ensure that you have a clea

48、n workbench and take the necessary anti-static precautions. Always wear an anti-static wrist strap. Refer to the Service Manual (5.8) for full details of the necessary working practices. Always disconnect the MAJIK/WAKONDA from everything, ESPECIALLY MAINS, before fitting a SNEAKY module. 2.On a cle

49、an bench, and with a protective pad to protect the facia, turn the MAJIK / WAKONDA upside down, remove the four screws and slide off the outer sleeve. 3.With the MAJIK / WAKONDA sitting on its feet again, remove the two screws on the back-panel, and take off the Sneaky slot blanking plate. 4.Push-fit the two white plastic stand- offs into the holes in the MAJIK / WAKONDA main PCB until they audibly click and lock into position. (See photo 1) 5.Push the extension connector into the holes on the underside of the KUDOS tuner PCB. (See photo 2) It is important to fit