I've summarised the infomation in this forum to assist my repairing for DMR E60:

Observation:Intermittent show "Unformat"" disk Error DVD-RAM even loading a new formatted DVD-RAM.

Steps:
Use a CD clean disk in the 1st place without making any possible damage to your recorder (if you dare to fix it by yourselves ).

Get yourself a screwdriver but no need any soldering tools, thanks.

Dissemble the recorders and the drive-unit, clean the lens and add grease on 3 tracks of the lens drive.

Conclusion:My DMR E60 GH manage to restore to healthy condition:
No disk load "unformat" error;
No long loading time;
No schedule time-record fail as the disk can be load probably.

Intermittent read error is somewhat related to Mechanical Error. Try to recondition the unit.



Remark:
Replacement for the DVD-RAM drive is nonsense as Panasonics sell the drive almost same the Recorder.
http://www.pasc.panasonic.com/Epartr/PartslistChoice.asp?

You can download a similar free model repair manual here:
http://www.eserviceinfo.com/index.php?what=search2

Try update your firmware whenever applicable possible (pls note your region, etc).
http://www2.panasonic.com/webapp/wcs/stores/servlet/vDownloads?storeId=15001&langId=-1...ge=DVDFirmware


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