a) When the disc has dirt or fingerprints on it, or scratches, or label on it...

a-1) Clean up the disc if it is dirty.
a-2) Use another disc if it is scratched.(use of Panasonic discs recommended)
a-3) Remove the label if it is on the disc.

b) When recording on DVD disc...

b-1) The disc itself may have some causes of the problem.
Check the manufacturer of disc.
( use of Panasonic discs recommended)

c) In case of repeating more than approx. 50 times of taking In/Out of disc, or Power On/Off (*1)...

c-1) It may get to be unable to record nor edit on the disc.
In such case, it is recommendable to change disc.
(*1) This item is effective only when using of discs except DVD-RAM.

d) In case display shows [SELF CHECK] or [RECOVER]...

d-1) Since it is under recovery from power failure and unplugged conditions, wait till the message on display disappears.

e) When the message of [ERROR HAS OCCURRED] appears on TV...

e-1) Press [ENTER] button for recover.
e-2) If not recovered by above operation, follow the procedures listed below.
e-2-1) Press and keep [POWER] button on the unit for more than 10 seconds to turn off the power of the unit.

e-2-2) Unplug power cord and wait for approx. 1 minute.
e-2-3) Plug power cord in.
e-2-4) The display shows [SELF CHECK] or [RECOVER] and it becomes under recovery.
Wait till the message on display disappears.

*When the unit does not recover after taking above procedures (e-2-1 to e-2-4) ,it is needed to be checked and repaired.
Ask the shop you purchase or the Global Service Center Network for further consultation.