Panasonic SA-BTT775GA Service Manual page 45

7.3.5. Service Mode Table 5
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.
Manufacturing Date Read out the manufacturing date of the unit.
Item
Description
FL display
&&
8. When the last error doesn't exist
NO DATA
CECHOK
CECHNG
CECLOK
CECLNG
YY: Year
MM: Month
DD: Day
45
Key operation
(Remote controller key)
Press [5] [5] in service mode.
Press [5] [6] in service mode.
Press [6] [1] in service mode.