Panasonic KX-TD7590CE Operating Instructions Manual page 6

D (
ISPLAY
Other icons
Ringer OFF mode
Vibration mode
Meeting mode
Key Lock ON mode
Ringer ON mode
FWD
DND
After powering ON, the following display appears.
1 Jan
[1-290]
L-CO F2
If the following display appears, consult your dealer.
6
.)
CONT
1:00
F3
NEED REPAIR
N
(N: 1–3)