Power Supply Unit; General - Furuno FS-1570 Service Manual

5.2 Power supply unit

5.2.1 General

Fig.5.2.1 shows power supply lines in the system.
Fig.5.2.1 Power supply lines
Table 5.2.1 summaries protectors provided on RELAY board.
Lowvoltage protector
Overvoltage protector
PA1 over current protector
RELAY
PA2 over current protector
board
(05P0744)
SW REG board protector (05P0737)
+12 V AVR protector
When two FS-2570Cs are used, only the unit which is
connected to [CONT-1] port can turn on and off the system.
No.1 controller unit should be installed in W/H.
Table 5.2.1 Protectors in power supply circuit
CR5 and Q6 which control U1.
CR6, CR7 and Q6 which control +12 V
AVR consisting of Q3 and CR8.
25 A breaker (CB1)
25 A breaker (CB2)
Polyswitch (RT2), REU900
(Ih=9 A/It=18 A)
Polyswitch (RT1), REU135
(Ih=1.35 A/It=2.7 A)
5-9
5.2 Power supply unit