4. Operation 
4-34 
The details of each alert are as follows. 
No. Name  Raising  Rectification  Support information 
1 DEPTH ALERT 
The water depth becomes the set 
value of the water depth alert or 
becomes shallower than that. 
The water depth becomes 
deeper than the set value of the 
water depth alert 
Sail toward depth area deeper 
than current position 
2  LOST DEPTH  Sea bottom tracking is unavailable 
Go to a sea area where depth 
can be measured 
Confirm a depth on chart 
3  NO PAPER  Out of paper  Refill a paper  Refill a paper(Refer5.2) 
4  LOST PRINTER  Cannot communicate to printer  Replace a printer  Contact us or your agency 
5  WEAK ECHO TX  Echo transmission level is low  Echo transmission level is normal  Contact us or your agency 
6  WEAK ECHO RX  Echo receiving level is low  Echo receiving level is normal  Contact us or your agency 
7 LOST PROCESSOR 
Cannot communicate to processor 
unit 
Restore communication to 
processor unit 
Check network cable and 
connection 
8  LOG MEMORY FAIL  Cannot access internal memory  Replace a processor unit  Contact us or your agency 
 
  Alert icon and status     
The icon of the alert changes depending on the situation and status. JFE-400/700 Echo Sounder uses the icons 
in the table below. 
No.  Name of alert icon  Functional outline  Alert icon 
1  Active - unacknowledged alarm  A flashing red triangle. 
A symbol of loudspeaker in the middle of the triangle. 
 
2 Active - silenced alarm  A flashing red triangle. 
A symbol as in icon number 1 with a prominent diagonal line above it. 
 
3  Active - acknowledged alarm  A red triangle. 
An exclamation mark in the middle of the triangle. 
 
4  Rectified – unacknowledged alarm  A flashing red triangle. 
A tick mark in the middle of the triangle. 
 
5  Active - unacknowledged warning  A flashing yellowish orange circle. 
A symbol of loudspeaker in the middle of the circle. 
 
6  Active - silenced warning  A flashing yellowish orange circle. 
A symbol as in icon number 5 with a prominent diagonal line above it. 
 
7  Active - acknowledged warning  A yellowish orange circle. 
An exclamation mark in the middle of the circle. 
 
8  Active - responsibility transferred 
warning 
A yellowish orange circle. 
An arrow pointing towards the right in the middle of the circle. 
 
9  Rectified - unacknowledged warning  A flashing yellowish orange circle. 
A tick mark in the middle of the circle. 
 
10  Caution  A yellow square. 
An exclamation mark in the middle of the square. 
 
*  Silenced and Responsibility Transferred function are available when connected to the CAM system.