Furuno FAR-2107 Series Service Manual page 381

3. PWR board
Part
Board
number
CR63
(MTR)
CR64 (RF)
CR65
PWR (AC)
(Tx-HV)
(03P9339)
and
PWR (DC)
(03P9338)
CR23
(IN ER)
Normal
status
Lights on when the over-current of antenna motor power
supply (+24 VDC) is detected. Restart the power to reset.
OFF
Note:
Since the antenna motor of S-band radar is of AC motor
type, +24 VDC antenna motor power supply is not used.
Lights on when 4 to 5A, over-current of power supply for
OFF
TR unit (+24 VDC), is detected. Restart the power to reset.
Lights on when 5 to 7A, over-current of Tx-HV power
supply (+24 VDC), is detected. Restart the power to reset.
OFF
The TX-HV board also has an over-current protection
circuit.
The LED is turned on when input over/low voltage is
detected. Operation is restarted when the voltage comes
back to the specified voltage range.
Protection
OFF
Over
voltage
Low
voltage
6-25
Table 6.3.3 LEDs on PWR board
Function
AC type
100 VAC 220 VAC
141 to 282 to
147 VAC 294 VAC
148 to
70 to 170 VAC
80 VAC
6.3 LED Check
DC type
34 to
38 VDC
- 24 VDC Spc.
13 to 17 VDC
- 12 VDC Spc.
7.3 to 8.5 VDC