Marantz-DR6050-cd-sb 维修电路原理图.pdf

Approved by S.NAGAO Written by WQ-19 2 817/additional rule 3 (1st Issue 2003-03-19)Date:15-May.-2003Model:DR6000, DR6050,CDR631, CDR500Page:1 / 1REF.NBR:MZ02-031Circulation:Application:Subject:Int.ref:PHENOMENONThe chip capacitor is likely to be damaged in the inconsistency of voltage proof.But, a problem symptom doesnt appear.SOLUTIONThe chip capacitor is changed to 0.1uF/50V on the CDR Module of MAR770/MAR775.POS.NO. : 2725 2726 2727Refer to the following of the service manual.MAR770/MAR775 CDR Module ( service manual part no.: 385K855020) CDR MAIN BOARD BOTTOM VIEW : POWER PART TESTPOINTS CDR 3rd gen. 7. GB70 position B5NECESSARY PARTDK98104300 ( 0.1uF/50V )REMARKSThis improvement has been done in the production line afterthe Lot number MZxxxxxx17xxxx and later.(DR6000)the Lot number MZxxxxxx13xxxx and later.(DR6050)the Lot number MZxxxxxx15xxxx and later.(CDR631)the Lot number MZxxxxxx11xxxx and later.(CDR500)The Lot number is mentioned the serial number label on the rear panel. (ex.MZxxxxxx17xxxx)SERVICE BULLETINReplace the Chip capacitor on the CDR module ofMAR770/MAR775.x for information customercomplaint in case of servicemandatory. See BelowRadioFans.CN 收音机爱 好者资料库Approved by H. TamuraWritten by K. OnoDate:22-Nov-01Model:DR4050/DR6000/DR6050CDR500/CDR631Page:1/1REF.NBMZ01-019SERVICE BULLETINSubject:Circulation:Application:Improvement for inoperable all buttonsx for informationcustomer complaint incase of servicemandatory.See belowInt.ref:PHENOMENON While CD is played or CD-R/RW is recorded, the FL display is frozen and all buttons willnot be worked. (except POWER button.)SOLUTIONReplace the DASP IC with a new one (8204 056 03460, QC05603460).REMARKDR4050:01 - 11 LOTDR6000:01 - 16 LOTDR6050:01 - 12 LOTCDR500:01 - 10 LOTCDR631:01 - 14 LOTThis improvement has been done in the production line afterthe LOT number “12” and later. (DR4050)the LOT number “17” and later. (DR6000)the LOT number “13” and later. (DR6050)the LOT number “11” and later. (CDR500)the LOT number “15” and later. (CDR631)The lot number and the service modification code are mentioned in the serial number label on therear panel. (ex. MZxxxxxx12xxxx)RadioFans.CN 收音机爱 好者资料库Approved by S.NAGAO Written by WQ-19 2 817/additional rule 3 (1st Issue 2003-03-19)Date:15-May.-2003Model:DR6050,CDR500Page:1 / 1REF.NBR:MZ02-035Circulation:Application:Subject:Int.ref:PHENOMENONThe OPEN/CLOSE movement of disc tray is fast, It may become a CD single 8cm(3in.) clamp defect.SOLUTION15k ohm resistor is soldered to the Pos.No.3114 in parallel.The object of PCB: CD MAIN BOARD of CD Module MAR1250 (Refer to the CDR500 service manual 2-13 page of MAR1250.)NECESSARY PART15k ohm GD05153160 REMARKSThe countermeasure apply to this claim only.REMARKSThis improvement has been done in the production line as follows.the Lot number MZxxxxxx21xxxx and after.(DR6050)the Lot number MZxxxxxx26xxxx and after.(CDR500)The Lot number is mentioned the serial number label on the rear panel. (ex.MZxxxxxx21xxxx)This is Pos.No.3114SERVICE BULLETIN Miss clamp problem of CD singlex for information customercomplaint in case of servicemandatory. See Below15k ohm