Furuno FS-1570 Service Manual page 43

24 V IN
C13: 220 pF (For oscillation frequency)
Fig.2.4.9 SW-REG (05P0737) board, FS-1570/2570
PA 24 V (-)
CB2: 25A
CB1: 25A
Fig.2.4.10 RELAY (05P0744) board, FS-1570/2570
TP1-TP2
Used to measure oscillation frequency.
(220kHz+20kHz)
R20: Adjusting +15V
RT2 (Polyswitch soldered to opposite side
on production sets): 900 mA
PA 24 V (+)
RT1 (Polyswitch): 135 mA
2-18
2.4 Boards in Transceiver Unit