Tascam CD-R624M Installation Manual

Contents

Tascam CD-R624M Installation Manual Manual pdf 8 page image

TroubleshootingUnderrunsLet’s start with a basic understanding of what’s involved. Here aresome basic terms you will need to understand to navigate the worldof data transfer:Access Time - How long does it take from the time the computerasks a drive for data until the drive starts spitting it out? This is usuallymeasured in ms (milliseconds).Throughput (aka Transfer Rate) - Once the drive finds theinformation, how fast can it transmit the data? This is usuallymeasured in MB/sec (megabytes per second).Fragmented or Optimized - Is the information on the drivewritten in one continuous data stream, or is it broken up into severalpieces around the drive? If the data is in one continuous stream, it isoptimized. If it is broken up, it is fragmented.Once you understand the previous terms, then we’re ready totroubleshoot! Let’s first understand the relationship between all ofthese.Think of a disk drive as a book. If you are reading a book from pageone to the end, you can read a certain number of words per minute.When you read a newspaper, and the story on page B1 is continuedon page B14, you are spending time looking for the continuation ofthe story. Suddenly, it takes longer for you to read the same amountof words. Even worse is a Choose-Your-Own-Adventure book. Withthese, you can only read a few paragraphs before you have to findthe next part. This slows you down considerably.So it is with hard drives. If everything is streamlined, then the data willflow quickly. If the drive has to search for all the parts continuously,the data flow suffers.So, one suggestion may be to optimize your source drive. That willput each file in one continuous data stream. You can do this with amultitude of applications, such as Norton Utilities.Another solution is to create a disc image, which will write (in onecontinuous stream) all of the information for the CD to a disk drive,including the directories. This is sometimes necessary for slowerhard disks to operate with faster CD burn speeds.Of course, one other solution is just to reduce the recording speedof the CD-Recorder. Some source disks may just be too slow forhigher speed recording (ie Zip, old 44 meg SyQuest, etc). Also, ifyou’re just making one quick CD, it may be faster to simply record theCD at 2x or even 1x, instead of defraging the drive, then burning theCD at 4x.Other problemsJam cannot identify the CD-Recorder -There is a file labeled TEAC CD-R56S. This filemust be in the same folder as the Jam applicationat boot-up. When Jam starts up, it looks forthese driver files and adds them to their list. Thisfile MUST REMAIN in the same folder as Jam.I cannot extract audio from my CD-ROM. - If you are trying toextract audio from an audio CD or trying to copy from CD to CD,your CD-ROM must be capable of these functions. (Not all CD-ROMs can do that.) If necessary, the 6x24 drive is capable of mostof these types of functions, so you may use the CDR drive toextract to your hard drive, then burn back to the CD.The drive is not recording to the blank CDs. - There couldbe several causes for this:1) Make sure the disc you are using is a regular CDR media. CD-RW discs are not compatible with this drive. “For Music Only”CDs may also cause problems, as they are designed for usewith consumer component CD-Recorders.

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