Q & A
8-7
26. What is the difference among the IMO, A, B, C and W types?
See page. 4-25.
IMO: IMO compliant A: Near-IMO specifications B: Non-Japanese fishing
vessels C: Japanese fishing vessels
W: Washington state (USA) ferry (special type with some special function added
to the B type)
Functions differ according to the type setting. For instance, the IMO type accepts
sentences of IEC611162 2
nd
ED (equivalent to NMEA Ver-3.0).
27. When the [1:HL OFF] key is pressed, the range ring and all marks
disappear. Is this normal?
It is a normal procedure. When the [1: HL OFF] key is pressed, HD lines and all
marks except radar echoes disappear to see echoes.
28. Where is the power switch of MU-201CR and MU-231CR located?
See page.7-74.
MU-201CR and MU-231CR do not have a power switch and power switch is
linked with the RPU-013. The power ON and OFF to MU-201CR and
MU-231CR is controlled by signals of #14 pin (+5 V POWER) of the DVI
connecter of the RPU-013.
29. The power cannot be turned on.
See page.6-25.
Check the LEDs on the PWR board. For instance, if CR23 (IN ER) on the PWR
board is ON, there is an error of over voltage or low voltage in the input voltage.
Make sure the ship’s main.
30. NAV data is not inputted.
See page. 4-27, 4-50, 6-9 to 6-16.
NAV data handling differs depending on the setting of the radar type (IMO, A, B
and C).
1) Check the wiring of input ports checked by the [OS POSN] box menu. A port
corresponding to the setting of GPS-1 is NAV (J606) on the TB board.
A port corresponding to the setting of the GPS-2 is a port other than J606 on
the TB board.
2) Monitor the NMEA data in “[Menu] -> 9 -> 8 -> 2:SELF TEST”.
3) When the data is not inputted by above monitoring, conduct a loop-back test.
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