Panasonic TY-ST103PF9 Manuel D'installation page 11

Assembly
5. Mounting the rear cover and wiring cord cover
Caution
Mount the rear cover and wiring cord cover in such a way
that the wires will not be pinched.
1. Raise the rear cover  slightly, align it with
the left and right of the metal frame, and
push it in until it will go no further.
2. Align the dowels on the wiring cord cover 
with the dowel holes at the rear of the light
shield, insert the dowels into the holes, and
secure the cover to the light shield using the
wiring cord cover mounting screws  (x4).
6. Mounting the support covers
1. Align the support covers  (1 at the left
and 1 at the right) with the back surfaces of
the supports, and secure the covers to the
supports using the support cover mounting
screws  (2 at the left and 2 at the right).
● If the screw holes cannot be identified easily, move
the support cover to the left or right, and adjust.
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Wiring cord cover 
Dowel hole
Dowel
Wiring cord cover mounting
screws (M5×55) 
Support covers 
Rear cover 
Support cover mounting
screws (M5×35) 