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 50 (click to view)
4.16 E. VF SCHEMATIC DIAGRAM
NOTES : For the destination of each signal and further line connections that are cut off from this diagram, refer to "4.1 BOARD INTERCONNECTIONS". When ordering parts, be sure to order according to the Part Number indicated in the Parts List.