Raymarine Ray230 - Manual (Page 109)

4-10 Maintenance
DTMF Interface PCB Wiring Diagram
RING
DET
PC601
HOOK
ON/OFF
PC602
TRANSFORMER
T601
NETWORK
RELAY
ON/OFF
Q601
PHONECELL
SX3
L1 L2
L1" L2"
RING
OUT
HOOK
OFF
B
+
GND
J601
IC601
J602