Furuno FS-1570 - Page 56

2.7 Handset (HS-2001)
2-31
Fig.2.7.3 Handset
U5 (Hole element)
(ON/OFF hook detector)
Condenser microphone
Ear speaker
HS board (05P0745)
Fig.2.7.4 HS board (05P0745), parts side