71ARS-2021D/2021DS ManualChapter 7 Troubleshooting7.1 About LCDAfter powering on if there is no LCD, please check if the connection of power cordis frim and the environment of power outlet is normal.7.2 About Error MessagesDuring Copy, Test, Compare and Verify, etc. if you press ESC to abort, an errormessage will appear on LCD. Abortion may cause ARS-2021D/2021DS to hang up,therefore you have to power on again.If reading fails, an error message will appear on LCD. Please get a new source DVDto try again.If ARS-2021D/2021DS hasn’t detected any device after powering on, an errormessage will appear on LCD.7.3 About DVD-ROM/DVD WriterIf a DVD-ROM or DVD writer cannot read, please confirm the format of the sourceDVD and check if it is damaged.Use any DVD writer to read the source DVD. If it works, the DVD-ROM is probablydefective or not compatible with the source DVD.Use a fine DVD writer as the data reader, and set the “Read Speed” at minimum.