NAD-M52-nmp-sm 维修电路原理图.pdf
《NAD-M52-nmp-sm 维修电路原理图.pdf》由会员分享,可在线阅读,更多相关《NAD-M52-nmp-sm 维修电路原理图.pdf(18页珍藏版)》请在收音机爱好者资料库上搜索。
1、NADSERVICE MANUAL M 52 M 52 Digital Music Vault Digital Music Vault RadioFans.CN 收音机爱 好者资料库NAD M50 Digital Music PlayerNAD M52 Digital Music VaultM52 Digital Music VaultQuick Setup GuideWHATS IN THE BOX CONNECT! POWER UP! IMPORTANT! The NAD M50 that appears in this guide is a reference model only an
2、d not included in the NAD M52 package. The NAD M52 is compatible only with the NADM50. The NAD M52 cannot be connected directly to a PC or MAC. Check out the NAD website, http:/ for further information about the NAD M52.RadioFans.CN 收音机爱 好者资料库2013 NAD ELECTRONICS INTERNATIONAL, A DIVISION OF LENBROO
3、K INDUSTRIES LIMITEDAll rights reserved. NAD and the NAD logo are trademarks of NAD Electronics International, a division of Lenbrook Industries Limited.M52_QS_v04 - Jan 2013NAD M50 Digital Music PlayerM52ReferencesforServiceManual(Rev.A)M52LEDIndicationstandby:powerLEDamber,HDDLEDsoffpowerup:powerL
4、EDsteadyblue,HDDLEDsinterleavingflashingred/blueshorttimepowerloss(e.g.USBunplugandplugbackinasecondortwo):PowerLEDsteadyblue,HDDLEDsflashingred/blueatthesametimeunitactivehealthily:allLEDssteadyblueandtheunitcanbeaccessedandrecognizedunithasinvalidRAIDset:allLEDssteadybluebuttheunitcantbeaccessedor
5、notrecognized.rebuilding:LEDoftherebuildingHDDflashingbluerebuildsuccess:LEDoftherebuildingHDDsteadybluerebuildfailure:LEDoftherebuildingHDDflashingredindividualdiskhealthy:LEDoftheHDDsteadybluediskfailure:LEDoftheHDDflashingreddiskmissing:LEDoftheHDDsteadyredNOTE:1) “unithasinvalidRAIDset”maybecaus
6、edbyinsertingaHDDthatwaspartofotherRAIDsetunit.WipingthelastfewsectorsoftheHDDwillsolvetheproblem(see“Rebuild”note1).Orifitscausedbysomethingelse,reinitializeandreconfiguretheRAIDsetisrequiredwhichwillcausethedataloss.2) “diskfailure”maybecausedbySATAportfailureifthediskitselfishealthy.Replacingthef
7、aileddiskwithanewoneorunplugandplugbackthefaileddisk,andrebuildRAIDarraywillsolvetheproblem(seehowtorebuildRAIDarraysection).Initialize/ConfiguretheRAIDArray1) WhenisRAIDarrayinitializationneededWhentheRAIDarrayisinvalidorwhentwoormoreoftheHDDsarereplaced,reinitializationoftheRAIDarrayisrequired.But
8、theinitializationwilldestroyalldatapreviouslystoredonthedisksandiscompletelyirreversible!2) HowtoinitializeandconfigureRAIDarrayMakesurealltheharddisksarehealthy. Powerontheunit PressresetbuttonattherearpanelsoonaftertheharddiskLEDsstartstoflash PressresetbuttonagainaftertheLEDsflash20timesafterthea
9、bovestep.Afterthisstep,alltheHDDLEDsbecomesteadyblue.Atthispoint,allthedataintheharddisksarelostandtheunithastobeformatted. PartitionandformattheunitRebuild1) WhenisRAIDarrayrebuildneededIfoneandonlyoneoftheharddisksiseithermissingorfails,i.e.thatharddisksLEDbecomessteadyredorflashingred,theunitRAID
10、arrayneedsrebuild.Iftwoormorethantwoharddisksfail,RAIDarraycantberebuiltandthedataintheunitwillbelost.Atthispoint,tocontinueusetheunit,youwillhavetoreplaceallthebroken/failedharddisksandreinitializetheRAIDarray.2) HowtorebuildaRAIDarraywithsamehealthyHDDintheunitThiscasehappenswhenonehealthyHDDisrem
11、ovedandthenputbackatthesameposition. Powerdowntheunit UnplugonehealthyHDD Poweruptheunituntilitssteady(2HDDsLEDblue,unpluggedHDDLEDred)thisstepleavestheunitindegradedmode Powerdowntheunit PlugtheHDDback PoweruptheunitthisstepwillrebuildtheRAIDarrayoftheunit3) HowtorebuildaRAIDarraywithanewhealthyHDD
12、ThiscasehappenswhenoneHDDisreplacedwithanewhealthyHDD. Powerdowntheunit Removethefailed/brokenharddisk Replaceitwithanewhealthyharddisk Powerbackontheunit.PressthetinyresetbuttonattherearpanelafterHDDLEDsflashes22times.ThiswillstarttheRAIDarrayrebuild.Duringrebuild,thenewHDDLEDwillbeflashingblueandt
13、herestLEDsaresteadyblue.NOTE:1) “newhealthyharddisk”ItmustbeatleastthesizeofthesmallestdiskusedwhenthesetofRAIDdiskswascreated.Diskwithidenticalcapacityastheothertwoisrecommended,withthebestoptionofmatchingthesamemodelnumberoftheothertwodisks.Itcouldbeabrandnewharddiskboughtfromstoreorusedoneaslonga
14、sitishealthy,couldbeeitherformattedorunformatted,couldhaveexistingdataorempty,butitmustNEVERbeusedbyotherRAIDdevicebefore.IftheHDDisusedbyotherRAIDdevicebefore,makesuretoWIPEthelastfewsectorsoftheHDDwheretheRAIDinformationisstored.* example to wipe the last 2MB or less of a 1TB HDD that is connected
15、 to Ubuntu Linux * remiubuntu:$ sudo dd if=/dev/zero of=/dev/sdb bs=1024 count=2048 seek=976761000 dd: writing /dev/sdb: No space left on device (this warning is ok) 1585+0 records in 1584+0 records out 1622016 bytes (1.6 MB) copied, 1.43649 s, 1.1 MB/s 2) “rebuildtime”Therebuildtimetakesapproximate
16、ly4hoursforthree1TBSATAIIdisk(e.g.SeagatePipelineHD2)and2.5hoursforthree1TBSATAIIIdisk(e.g.SeagatePipelineHD).TherebuildtimevariesdependingontheSATAdiskcapacity.3) “dataintegrityduringrebuild”Duringtherebuildprocess,thedataintheunitstaysasis,andyoumaycontinueusetheunit.4) “interruptduringrebuild”Onl
17、ypoweringoffofM52caninterrupttherebuild.UnpluggingUSBcablewontstoptherebuild.Werecommendnotturningthepoweroffduringtherebuildprocess.Butifitisinterrupteditwillcontinuerebuildingthedataassoonasthepowerisrestored.FAQ:1) Whatisdegradedmode?M52worksindegradedmodewhenoneandonlyoneofthehealthyRAIDarrayset
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- NAD-M52-nmp-sm 维修电路原理图 NAD M52 nmp sm 维修 电路 原理图
收音机爱好者资料库所有资源均是用户自行上传分享,仅供网友学习交流,未经上传用户书面授权,请勿作他用。



Marshall-9100-62-02-Schematic电路原理图.pdf


