User`s guide

Troubleshooting 119
❏ The disc is not damaged.
❏ The disc is high-quality.
❏ The product is used within acceptable environmental conditions.
❏ The product is not subject to vibration or shock.
❏ The fan filter is not clogged with dust.
❏ The printer tray is not dirty.
❏ The drive has not reached the end of its service life.