Furuno CN-24 Service Manual page 54

Color net recorder
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S2
#1
#2
off
off
27) Confirm that the LED lights up from blinking.
Caution
The calibration data stored into NVRAM at a moment when the DIP switches are set to
above. If the DIP switches are set to above before completing the adjustment.
Improper calibration data are stored into NVRAM, which produce erratic depth indication.
28) Turn off the transmitter unit by rotating the screw of pressure switch to CCW..
29) Set the oil device to 0 kgf/ cm
30) Set DIP switches S1 and S2 as follow
S1
#1
#2
off
off
S2
#1
#2
off
off
Caution
If turn on the power again before setting the DIP switch to above ( S2 #4: ON), All data of
NVRAM may broken.
3. Confirmation of result of adjustment
1) Turn on the transmitter unit by rotating the screw of the pressure switch (test switch) to
clockwise
2) Set the oil pressure to 0 kgf/ cm
3) Confirm that the depth indication on the display is within 0 to 1 m.
4) Set the oil pressure to 82 4 kgf/ cm
5) Confirm if the depth indication is within 790 to 810 m.
6) Set the oil pressure to 206 kgf/ cm
7) Confirm if the depth indication is within 1990 to 2000 m.
8) Set the oil pressure to 0 kgf/ cm
#3
#4
off
off
2
.
#3
#4
#5
#6
off
off
X
#3
#4
off
"on"
2
.
2
.
2
.
2
. Set the DIP switches S1 and S2 to original setting.
#7
#8
X
X
off
(Normal mode)
7-6

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