Panasonic DMP-BD50EG Service Manual page 19

Mode name
CEC (H) output Check of the CEC terminal high output of
HDMI.
CEC (L) output Check of the CEC terminal low output of
HDMI.
Production Date Display Display the date when the unit was produced.
Item
Description
FL display
YY: Year
MM: Month
DD: Day
19
Key operation
(Remote controller key)
Press [5] [5] in service mode.
Press [5] [6] in service mode.
Press [6] [1] in service mode.