The Sony AV-3600 service manual was what I needed for the repair of this unit
Thanks for the good service
Dave
Text excerpt from page 5 (click to view)
SECTION 3 DISASSEMBLY
Be careful not to break the tweeter cone, because it is so thin. Set Ring ASSY, Grill frame (front) ASSY Bottom section Subwoofer (SP103)
SA-VF700ED
Note : Follow the disassembly procedure in the numerical order given.
3-1. RING ASSY, GRILL FRAME (FRONT) ASSY
Grill frame (front) ASSY Claws
1 Pick the claws of Ring ASSY in the arrow a direction over the net of Grill frame (front) ASSY and push Ring ASSY out in the arrow b direction. b