Roland FR-7/FR-5 Owner's Manual page 14

Setting up | Connections
4. Setting up
INPUT
L + R
OUTPUT
Use the supplied 19-pin
L/MONO + R/MONO
cable.
T B/C
OUTPUT INPUT
L/MONO + R/MONO L + R
Use either a long signal cable (10m or more) or an optional wireless system (recommended).
14