Panasonic CS-KS12NB41 & CZ-18BT1U + CU-KS12NK1A Technical & Service Manual page 42

7-3-3. Remove the ceiling panel.
(1) Open the clamp (4 locations) and remove the 2 lead wires from the clamps. (Fig. 6)
(2) Remove the 4 screws fixing the corner cover (at 3 locations) and indicator cover (at 1 location). (Fig. 6)
(3) Press the center 1 of the cover and remove the cover with the section 2 pulled down. (Fig. 7)
(4) Remove the strap (3 locations) from the hook on the ceiling panel. (Fig. 8)
There is no strap on the indicator cover.
NOTE
(5) Remove the bolt (4 locations) with a washer and remove the ceiling panel. (Fig. 9)
Screw
Indicator
cover
Corner cover
Screw
Strap
Clamp
Corner cover
Corner cover
Fig.6
Remove the strap
from the hook.
Fig.8
Pull down
Lead wire
section 2.
Clamp
42
Cover
Center 1
Fig.7
Bolt
Bolt
Fig.9