Pioneer DVR-231-S Service Manual

Also see for DVR-233-S: Operating instructions Specifications Service manual Operating instructions Quick start guide

DVR-231-S 735 6 7 85 6 7 8CDFABE7.3 OUTLINE OF THE PRODUCTMain newly developed technologies1. PickupThe pickup supports 16 times-speed recording for the DVD-R and6 times-speed recording for DVD-RW.A new liquid-crystal tilt servo system is adopted for the pickup.2. Recording-signal-processing LSI• UPD63641GC (DRIVE Assy: IC201)The recording-signal-processing module of conventional modelshave outside CPU, but this has been integrated into a single newlydeveloped recording-signal-processing LSI, enabling stableperformance and cost reduction.System configurationIn each signal-processing LSI of the main function blocks,various processes have been integrated into one chip, whichenables simpler system configuration. With the AV-signal-processing LSI at the center, video inputs/outputs, audioinputs/outputs and various memory cells are connected to it.Fig1. System configurationAnalog AudioDIFPlaybackRecordTuner / LineSelectIC101Tuner / FLControlCPUIC1001AV SignalProcessingLSIDrive Assy(DVD-R/RW)IC1102FlashIC1201, IC1202DDR SDRAMFLVideo : IC402 MM1657XJBEAudio : IC601 BD3823FVIC3101Audio A/DPCM1802IC3201Audio D/APCM1742KE[Memorized Data]• FLASH ROM (IC1102 MAIN ASSY)The storing area of a program code and setting informationThe backup data of Tuner information and user setting• CPU SDRAM (IC1201, IC1202 MAIN ASSY)The execution area and working area of a programAn overall memory for system assuring 32 bit widthwww . xiaoyu163. comQQ 376315150 992894298TEL 13942296513 992894298051513673QQTEL 13942296513 QQ 376315150 892498299TEL 13942296513 QQ 376315150 892498299http://www.xiaoyu163.comhttp://www.xiaoyu163.com