I keep getting a "Fail" message when I try and duplicate CD's using my...

I keep getting a "Fail" message when I try and duplicate CD's using my Glyph GLDP 216 duplicator.

If the failure rate of copying is high, please do the following things to improve.
• Lower the speed of DVD writer
•Inspect if the blank disk’s quality is bad.
•Update the firmware.
• Inspect the DVD writer’s maximum writing speed. If the speed is over 24X, copy the data to a hard disk first, and then transmit to DVD.

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