Sony Power HAD FX HSC300R Service Manual page 57

5. Disconnect the harness from the connector (CN1) on the FL-377 board.
Note
Be sure to hold the plug when disconnecting the coaxial cable. Do not pull the cable.
OK Hold the plug to remove.
6. Remove the screw (PSW3 x 6) to detach the earth lug.
HSC300RF/HSC100RF/HSC300R/HSC100R
NG Do not attempt to remove by
pulling the cable.
Coaxial cable
FL-377 board
CN2
Harness
CN1
2-5