From the BV3 Service Manual (I assume Avant is the same) - get a Silver or Gold membership and you'll be able to download!
On/Off (times x10) shows how many times the TV has been switched off to
stand-by mode. The number is given in full tens. If the number exceeds four digits,
the four least signifi cant digits are shown (e.g. 12834 is shown as 2834).
The other counters in the menu are shown in full days.
Regards
Guy