Optoma PK-301 Service Manual page 12

2. Unscrew 5 screws as red circle.
3. Unscrew 3 screws on the focus(as yellow
square).
4. Pull out the focus ring.
Note: When assembling the focus ring,you
should screw the 3 screws first,then push in
the focus ring.
5. Unscrew 8 screws(as red circle) and
disassemble 3 heatsinks.
PK-301/PK320/PK301 PLUS Confidential 2-5