JRC JFE-700 - User Manual

Questions and Answers

A
Anna CaseAug 3, 2025
What to do if the screen doesn't appear even if the power switch is pressed on my JRC JFE-700 Marine Equipment?
- M
  Melissa ClarkAug 3, 2025
  If the screen of your JRC Marine Equipment does not turn on, first ensure that the breaker of AC100-230V of the ship is in the "ON" position. Then, check if the main switch in the processing unit is on. Also, check the brightness of the screen. Verify the power supply AC inboard cable for disconnections or loose screws in the connecting terminal. Replace the fuse if it's blown. If the issue persists, it may indicate a faulty display processing unit.
D
David SandersAug 6, 2025
Why is there a lot of noise recorded on my JRC JFE-700 Marine Equipment?
- S
  Scott HernandezAug 7, 2025
  If you're experiencing excessive noise records on your JRC Marine Equipment, it could be due to several factors. First, check the dynamo for any issues. Second, ensure the main unit earth is properly connected. If these steps don't resolve the problem, the noise may be due to external interference, such as underwater sonic prospecting equipment from another ship, which is not a fault of your equipment.
A
Ashley MayoAug 11, 2025
What to do if the depth value is not displayed on my JRC JFE-700 Marine Equipment?
- M
  Megan SchroederAug 11, 2025
  If the depth value isn't showing and only the oscillation line appears in standard mode on your JRC Marine Equipment, it could be because the actual sea bottom is deeper than the set range. Set the range to AUTO, or manually adjust it. Another possible cause is a disconnected transducer cable, which will need to be repaired.
K
Kelsey BeasleyAug 15, 2025
What to do if the depth value is not correct on my JRC JFE-700?
- D
  Debbie WigginsAug 16, 2025
  If the depth value displayed on your JRC Marine Equipment is incorrect, ensure that the draft adjustment value is set correctly.
K
Kimberly AyalaAug 20, 2025
What to do if the depth value is not displayed, but the sea bottom echo is slightly recorded on my JRC JFE-700 Marine Equipment?
- N
  nelsontheresaAug 20, 2025
  If you're seeing a faint sea bottom echo but no depth value on your JRC Marine Equipment, it could be due to a weak sensitivity setting. Try setting the sensitivity to AUTO or manually increase it. Additionally, if the sea bottom is muddy, this can weaken the echo. Also, check the transducer for any adhesion, and remove them at dry-dock. Finally, examine the transducer cable for disconnections or loose screws in the connecting terminal, and tighten if necessary.
T
Tara MyersAug 25, 2025
What to do if the depth value is not correct and a mistaken record appears in a middle layer as sea bottom on my JRC JFE-700?
- D
  David GlassAug 25, 2025
  If your JRC Marine Equipment is displaying an incorrect depth value with a false sea bottom appearing in a middle layer, it's likely that the sensitivity setting is too high. Reduce the sensitivity or set it to AUTO, as the device may be mistaking garbage, dirt, or plankton layers in the water for the sea bottom.
R
Rebecca SandersAug 28, 2025
Why is the echo displayed on the screen all cyan on my JRC Marine Equipment?
- G
  George TorresAug 28, 2025
  If the echo displayed on the screen of your JRC Marine Equipment is entirely cyan, it indicates that transmission has stopped. To resolve this, turn off the power to the display processing unit and then restart it.