Furuno FAR-2107 Series Service Manual page 499

- LAN: 100BASE-Tx
When the communication is not enabled, restart all units connected to the LAN.
For the status of communication, check the LEDs on CU-200 and NET-100 of
RPU-013. CR-1 lights up when data is running over the LAN, and CR-2 blinks
when the unit is linked with the LAN. See page.6-24 for the layout of LEDs. For
another method for checking on the LAN communication, check [ANT] box menu
to see the communication between radars connected to the LAN. When [Menu] ->
6:CARD cannot be accessed, it means that communication is not being conducted
with CU-200.
68. The ALERT BOX displays VIDEO error.
See page.4-77 and 6-32.
This is the presentation of an error that IF/VIDEO signals from TR unit cannot be
detected on the SPU board. If the presentation of TUNE is normal, the TR unit can
be regarded as normal.
Check the connection of the co-axial cable on the IF-VIDEO line of the TB board
and the transceiver unit. Check also the video signal outputs of #8 (Video out) pin
of SLAVE-1 or SLAVE-2 on the TB board. If signals are outputted, the problem
lies on a circuit after the video circuit on the SPU board.
1.5 V
69. Give the information on SYSTEM FAIL alarm.
See page.4-58.
SYSTEM FAIL alarm is outputted from the control unit when control signals
from the processor unit cannot be received on the control unit. The setting of
SYSTEM FAIL is made on the DIP switch on the control unit. It includes the
setting whether to output an alarm or not and the setting on the polarity.
Waveform of IF/VIDEO signal
of TB board on processor unit
Condition:
24 NM GAIN: 80, STC: 80
ES, EAV AUTO FTC: OFF
0 V
IR: 2
Note:
The level changes according to adjustments
in [Menu] -> 0 -> 2 -> 2: Cable ATT ADJ.
8-18
Q & A