Panasonic VDR-M30PP Service Manual page 37

There are two types of message displayed when the self-diagnosis function detects problems:
messages for minor problems, and messages for serious problems.
Information:
The messages of self-diagnosis function will be displayed until the power switch is set to "POWER
OFF" or the disc is removed, regardless of whether there is a minor or serious problem.
(1) Messages for minor problems (Fig. 4-5-1, 4-5-2)
These messages appear when troubleshooting is likely
possible for the problem detected when power was turned
on, following the procedure below.
Procedure when message shown in Fig. 4-5-1 appears:
Set the power switch to "POWER OFF", reconnect the
AC adapter/charger or battery, and then set the power
switch to "VIDEO" or "PHOTO (disc)".
Procedure when message shown in Fig. 4-5-2 appears:
Set the power switch to "POWER OFF", press the DISC
EJECT button, and then reinsert the disc. After that, set
the power switch to "VIDEO" or "PHOTO (disc)".
If the problem is handled by the procedure shown above,
servicing is not necessary in almost all cases. However, if
the VDR-M30 cannot be restored from the problem or the
same problem recurs, appropriate servicing will be required.
The information on minor problems will be stored in flash
memory as error codes (4-digit alphanumeric characters),
whether or not the VDR-M30 is restored from the problems.
See "4-5-2 Error codes stored in flash memory" for how to
display the stored error codes.
Error has occurred.
!
Please restart.
Fig. 4-5-1 Message for Minor Problem
(1/2)
Error has occurred.
!
Please reinsert a disc.
Fig. 4-5-2 Message for Minor Problem
(2/2)