Sphinx-Myth1-pre-sm 维修电路原理图.pdf
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1、1. SERVICE MANUALMYTH 1PREAMPLIFIERLINE 3LINE 1CDPHONESVIDEOMUTELINE 4LINE 2TUNERTAPE / MONSTANDBYRadioFans.CN 收音机爱 好者资料库SPHINX Myth 1 Service Manual 2 1. UNPACKING.32. CONTACTING THE MANUFACTURER.33. THE PRE-AMP AT A GLANCE .4Front panel.4Rear panel .54. OPERATION .6Power on.6Selecting an input .6A
2、djusting the volume level .6Temporarily set volume to zero.6Power off.65. SPHINX REMOTE CONTROL.7Buttons.7Operation.8Selecting without switching.8Batteries.8Encountering problems.86. TECHNICAL SPECIFICATIONS.97. ADJUSTMENT PROCEDURES.10Offset .108. PROBLEMS AND SOLUTIONS .119. DIAGRAMS AND PARTS LIS
3、TS.12General Overview Myth 1.13Power Supply.14Input / Output.15Amplifier Left.16Amplifier Right.17Controller .18Keyboard.19Parts list.20RadioFans.CN 收音机爱 好者资料库SPHINX Myth 1 Service Manual 3 The Sphinx Myth 1 designThis service manual will help you to optimallyservice and repair the Sphinx Myth 1 Pre
4、amplifier.This pre-amp uses the newest technologies andrefined designs and is extremely simple to operate.Designs that successfully have been used in theaward winning Project Eight.Such as the ultra-linear extremely low-noiseClass-A audio circuits, built from the finest hand-selected parts.The signa
5、l path is completely balanced from input tooutput, and left and right are totally separated.The power supply is of a unique design (fully Class-A!) and consists of three completely separate andindependent sections: one for the digital control,plus one each for the left and right channel.Input select
6、ion is done by means of precisionrelays. The ALPS volume control is motor-driven.To obtain the maximum quality from this power ampit is necessary to use it with top quality audiocomponents, preferably with other Sphinxcomponents.1. UNPACKINGBefore leaving the factory every Myth 1 is subjectedto stri
7、ngent and extensive technical and exteriorquality inspection.This ensures you will enjoy many years of highquality audio from a perfect-looking product.After unpacking your Myth 1, we thereforerecommend you carefully check it for any transportdamage.In case of damage: please contact your Sphinxdeale
8、r immediately and retain all packing materialsfor possible proof of damage and possible claims.Even if the component is in perfect condition youshould still keep the packing materials. If you needto transport your Myth 1 at a later time it will be bestprotected by the original packing materials.2. C
9、ONTACTING THE MANUFACTURERIn case of any problem not covered in this manualor if you have other questions you may contact theSphinx International Service Department in TheNetherlands (local time: GMT +1h) during officehours at the following numbers:Phone:(+31) 35 602 0302Fax:(+31) 35 602 2806E-mail:
10、audionleuronet.nlIt is always very helpful and efficient if you have allrelevant information about the specific product andthe problem ready.Please also refer to the User Manual of theMyth 1 for information about functions notdescribed in this manual.It is important to familiarise yourself with thes
11、pecial functions, operation and possibilitiesof the Sphinx Myth 1.SPHINX Myth 1 Service Manual 4 3. THE PRE-AMP AT A GLANCEFront panel11. CD: To select the CD input. The red LED willlight.2. LINE 1: To select the Line 1 input. The red LEDwill light.3. LINE 3: To select the Line 3 input. The red LEDw
12、ill light.4. VIDEO: To select the Video line input. The redLED will light.5. MUTE: Press this button to temporarily mute thesound. The red LED will light.6. PHONES: To connect dynamic stereoheadphones.7. TUNER: To select the Tuner input. The red LEDwill light.8. LINE 2: To select the Line 2 input. T
13、he red LEDwill light.9. LINE 4: To select the Line 4 input. The red LEDwill light.10. TAPE / MON: To select the TAPE IN input. Thered LED will light.11. STANDBY: To switch the component on and off:onLED is offoffLED is red12. Receptor window for the IR signals from theRemote Control.13. VOLUME: This
14、 rotary knob adjusts the volumelevel.LINE 3LINE 1CDPHONESVIDEOMUTELINE 4LINE 2TUNERTAPE / MONSTANDBY12345678910111213SPHINX Myth 1 Service Manual 5 Rear panel1. TUNER: To connect the signal cable from thetuner.2. CD: To connect the signal cable from the CDplayer.3. TAPE OUT: Connect this output to t
15、he input ofthe recorder.4. TAPE IN: Connect this input to the output of therecorder.5. LINE 4: To connect the signal cable from thesignal source for LINE 4.6. LINE 3: To connect the signal cable from thesignal source for LINE 3.7. LINE 2: To connect the signal cable from thesignal source for LINE 2.
16、8. LINE 1: To connect the signal cable from thesignal source for LINE 1.9. VIDEO: To connect the signal cable from theaudio output of the video source.10. Control Out: To connect the optical cable(s) toother Sphinx component(s).11. OUT 1 /2 L+R: Connect this output with a signalcable to the input of
17、 your power amp.12. Manufacturers label: This shows importantdata for the component, such as serial numberand mains power voltage.13. Warning!: This shows important informationabout the safety regulations for the Myth 1.14. AC Power: Connect the mains cable to a mainspower outlet (100 - 240 VAC).The
18、 mains fuse is placed behind the cover.Here you also find the mains power switch O / I.1234567891011121314SPHINX Myth 1 Service Manual 6 4. OPERATIONConnect the mains cable to a mains outlet.Once you have finished connecting all components,you can power on the Myth 1 with the mains switchO / I (14)
19、.The volume control will then automatically turncounter-clockwise and for a while the STANDBYLED will blink red, after which it will remain red. Thepre-amp is now in standby mode.From now on you should switch the amp on or offwith the STANDBY button (11).That way, all circuits will remain at optimum
20、operating temperatures and the audio quality will be100% immediately after switching on. Additionally itsignificantly increases the life span of thecomponent.The Myth 1 is now in stand-by mode.Power onSwitch the Myth 1 on with the STANDBY button.The pre-amp will select the CD input after which itun-
21、mutes the output.Selecting an inputYou may select an input with one of the buttons 1. to9.: the LED will illuminate.The new input becomes active after you haveselected it. You will hear a click. This is caused bythe precision relays for the inputs: the old one isreleased while the new one is energis
22、ed.Adjusting the volume levelThe large VOLUME control to the right adjusts thevolume level from OFF to maximum (fully clockwise).The level change is immediate.Temporarily set volume to zeroPress the MUTE button (5) temporarily mutes thesound. The red LED will light. Another press on thisbutton un-mu
23、tes the output.Power offYou switch the Myth 1 off (to stand-by) with theSTANDBY button (11).SPHINX Myth 1 Service Manual 7 5. SPHINX REMOTE CONTROLThis single Sphinx Remote Control lets you controlall functions: not only of the Myth 1, but of all otherSphinx equipment.Only the following buttons and
24、indications on theRemote apply to the Myth 1 (the others will notfunction):Buttons1. PRE-AMP: To select the amp. All buttonspressed hereafter will control only the pre-ampfunctions.The buttons TUNER and CD will have no effect.2. STANDBY: Use this red button to switch theMyth 1 to stand-by.3. : Press
25、ing this green button mutes theoutputs (temporarily) and you will not hear anysound. The red LED will be illuminated. Anotherpress on this button un-mutes the outputs4. TAPE/MONITOR: Use this button to select theTape IN input. Pressing this button has thesame effect as pressing the TAPE/MON button(9
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