This is a good quality scan of the service manual which includes an assembly diagram, block diagram, schematic, and parts list. Exactly what is needed to repair my KR-V55R receiver.
Text excerpt from page 32 (click to view)
5-2. Wiring the W-LAN Cable
* The MS01 PWA ANTENNA is installed also in the models without Wireless LAN. Refer to the instruction below to see how to wire the CABLE.