Power Supply Circuit Diagram; Fs-5075 Power Supply Circuit Diagram - Furuno FS-1575 Service Manual

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4. FET (05P0872): FS-5075
Like the P-SW board, the FET board (05P0872) turns ON and OFF the input power
supply. Since the FS-5075 system causes higher input power supply current than the
FS-2575 system, the FET board is added to switch the input power supply current up to
70A.

7.7.2 Power Supply Circuit Diagram

1. FS-5075 Power supply circuit diagram

TB1
+
24V
-
TB2
P-SW
05P0871
Q1 - 4
TB1
F1: 40A
TB2
CR4
CR3
Over V
R4
R5
CR5, 6
Vref
Fig. 7.7.1 FS-5075 Power Supply Circuit Block Diagram
CONFIDENTIAL (internal use only)
This confidential document is used only by FURUNO authorized persons.
It is strictly prohibited to reproduce the document in whole or in part without prior written permission of FURUNO.
FET
05P0872
Q1 - 4
POWER SW
F1: 40A
CR1
CR2
J1
J1
U1
RT1
3A
3A
Q5, CR7
12V
RT2
AVR
+
-
U2
-
+
Low V
OV
5
4
2
3
1
J8
PA-IF
SW REG
05P0873
TB3
TB1
24V
TB4
TB2
SW REG
05P0873
TB3
TB1
24V
TB4
TB2
J2
24V
J3
24V
PWR
05P0874
J1
24V
U1:
GND
2
15V SW Reg.
0V
7-68
7.7 Power Supply
J1
F1: 20A
1-3
42V
U1:
18V SW Reg.
24V
4
42V
5-7
0V
F1: 20A
1-3
42V
U1:
18V SW Reg.
24V
4
42V
5-7
0V
J2
1
15V
15, 5V
2
GND
3
5V
U2:
5V SW Reg.
4
GND
J4
PA-1
J4
PA-2
J6
24V
DRV
J7
PA-IF

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Fs-2575Fs-5075

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