Marantz CDR 500 Service Bulletin

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Approved by H. TamuraWritten by K. Ono Date:22-Nov-01Model:DR4050/DR6000/DR605 0CDR500/CDR631Page:1/1REF.NB MZ01-019SERVICE BULLETIN Subject:Circulation:Application:Improvement for inoperable all buttonsxfor information customer complaint in case of service mandatory ...................See below Int.ref:[ PHENOMENON] While CD is played or CD-R/RW is recorded, the FL display is frozen and all buttons will not be worked. (except POWER button.) [ SOLUTION] Replace the DASP IC with a new one (8204 056 03460, QC05603460). [ REMARK] DR4050:01 - 11 LOT DR6000:01 - 16 LOT DR6050:01 - 12 LOT CDR500:01 - 10 LOT CDR631:01 - 14 LOT This improvement has been done in the production line after the 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 the rear panel. (ex. MZxxxxxx12xxxx)

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Approved by S.NAGAO Written by WQ-19 2 817 /additional rule 3 (1st Issue 2003-03-19) Date: 15-May.-2003 Model: DR6050,CDR500 Page: 1 / 1 REF.NBR: MZ02-035 Circulation: Application: Subject: Int.ref: [PHENOMENON] The OPEN/CLOSE movement of disc tray is fast, It may become a CD single [8cm(3in.)] clamp defect. [SOLUTION] 15k 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 PART] 15k ohm GD05153160 [REMARKS] The countermeasure apply to this claim only. [REMARKS] This 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.3114 SERVICE BULLETIN Miss clamp problem of CD single x for information customer complaint in case of service mandatory ................... See Below 15k ohm