Sharp R-21LCF Service Manual page 29

6. Push down the rear edge of the ceramic shelf into the oven cavity
bottom plate.
7. Now, the ceramic shelf is installed.
WARNING: Make sure that the rubber packing is not caught
between the oven door and the oven cavity front plate,
to avoid possible exposure to excessive microwave
energy.
Oven C avity
F ront E dge
R ear E dge
P us h
C eramic
S helf
11 – 8
R21LCF