Sony VPL-FHZ700L Service Manual page 48

If the peripheral area is out of focus
Depending on the installation condition, the focus of the peripheral area of screen cannot be adjusted
using the peripheral focus ring. In such a case, perform the adjustment by changing the number of spacers
inside of the adaptor.
1. Remove the optional lens VPLL-Z4007 from this unit. (Refer to Section 1-7-5.)
2. Loosen the six screws, then remove the adaptor.
Screws
Adaptor
Lens
1-40 (E)
VPL-FHZ700L