Panasonic SA-BTT775GA Service Manual page 42

7.3.2. Service Mode Table 2
Mode name
Laser Used Time Check laser used time (hours) of BD
Indication Mechanism.
Item
Description
FL display
******
(******) is the used time display in
hour.
Laser used time of BD/DVD/CD in
Playback/Recording mode is
Counted.
1. Blu-ray Playback:
****
BP
2. Blu-ray Recordiing:
****
BR
3. DVD Playback:
****
DP
4. DVD Recording:
****
DR
5. CD:
****
CD
42
Key operation
(Remote controller key)
Press [4] [1] in service mode.