Panasonic EH-HV51 Service Manual page 6

(7) Remove Lock Button and Lock Button Spring.
(8) Remove Iron Plate of Heater B from Hook.
(9) Remove Slide Plate and Slide Spring.
(10) Take off Press Plate.
(11) Remove 2 screws of the Housing side
by Phllips screw driver (Plus Driver).
(12) Remove 6 Screws by Phllips screw driver
(Plus Driver).