You may encounter power calibration errors each time you use your Iomega® CD-RW (ZipCD™ 650) drive if you are using poor quality media. Even though you may have encountered success with the same type and/or brand of media before, CD media vendors often change disc suppliers and quality levels may change due to manufacturing differences. Because of mixed batches of discs and changing quality levels, you may have part of a spool of discs burn fine, while the other part won't burn and/or errors occur.

Your CD-RW drive uses a power calibration process that adjusts the recording laser power to the optimum level for each recordable disc you insert into the drive. Each CD-R and CD-RW disc contains a reference value for laser power in a preformed track, which helps the CD-RW drive determine the ideal laser power. There is also a special area on each CD-R and CD-RW disc set aside for the CD-RW drive's laser to power up to the level required to burn the disc. If the laser power calibration process fails, a power calibration error will occur.

To help correct this problem, try another brand of media. Please go to http://www.iomega.com/europe/support/english/documents/10706e.html for a list of media types that have been tested by Iomega. We recommend you use these discs when creating CDs with your Iomega CD-RW (ZipCD 650) drives.

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