Panasonic PT-53TW53G Service Manual page 159

8. Release CRT anode lead from CRT chassis wire clamp and all other
wires from holders.
9. Loosen a screw that secures the DY and remove it from the CRT neck.
Caution:
To insure protection against x ray radiation, the lens must be mounted
in place at all times when power is applied to the PTV
CRT replacement
1. Remove CRT focus lens assembly (4 screws)
Focus pack location
CRT assembly
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