How to fix RCU communication issues with FPC on JRC JCY-1900?
- SSpencer BrownSep 9, 2025
If the RCU can't communicate with the FPC, check the cable first. If the cable is okay, try rebooting the RCU.

How to fix RCU communication issues with FPC on JRC JCY-1900?
If the RCU can't communicate with the FPC, check the cable first. If the cable is okay, try rebooting the RCU.
What to do if JRC JCY-1900 Data Loggers OPU screen is not displayed?
If the OPU screen is blank, try adjusting the screen brightness using the rotary knob. If that doesn't work, check the OPU's operating time. If it's over 50,000 hours, the LCD might be nearing the end of its life, and it may be necessary to replace the OPU. Contact your sales representative, our sales department, nearest branch office or sales office. Also, ensure the OPU is receiving power by checking the LAN cable and rebooting the RCU.
Why AC input power is not supplied to the RCU JRC Data Loggers?
If the AC input power is not supplied to the RCU, check the switchboard and ensure it's providing power. Also, verify that the POWER switch on the RCU is turned on. Lastly, inspect the AC line fuse in the RCU; if it's blown, replace it.
What to do if JRC JCY-1900 OPU can't operate?
If the OPU isn't responding, it might be in operation mode. Try pushing the HOME button on the OPU. If the rotary knob is broken, it is necessary to replace the OPU. Contact your sales representative, our sales department, nearest branch office or sales office.
Why is the LCD screen dark on my JRC JCY-1900 Data Loggers?
If the LCD screen on your JRC Data Loggers becomes dark, first try adjusting the screen brightness using the rotary knob. If the screen remains dark, check the OPU's operating time. If it's over 50,000 hours, the LCD might be nearing the end of its life, and it may be necessary to replace the OPU. Contact your sales representative, our sales department, nearest branch office or sales office.
What to do if initialization of sensor port failed in JRC JCY-1900?
Reboot the RCU and check if it works normally. If the problem persists, please contact our head office, or a nearby branch or local office to request servicing.
What to do if internal error of the ARB is occurring in JRC JCY-1900?
Reboot the RCU and check if it works normally. If the problem persists, please contact our head office, or a nearby branch or local office to request servicing.
What to do if sensor data could not receive in JRC JCY-1900 Data Loggers?
First, check the cable. Then, check the equipment that is displayed.
What to do if RCU can't receive the ZDA sentence from the GPS in JRC JCY-1900?
Check the GPS. If the GPS is working normally, please contact our head office, or a nearby branch or local office to request servicing.
What to do if temperature of RCU's built-in battery is higher than the rated value in JRC JCY-1900?
First, check the temperature of the place where the RCU is installed. Then, reboot the RCU to see if it works normally. If the problem persists, please contact our head office, or a nearby branch or local office to request servicing.
| Measurement Parameters | Temperature, Humidity |
|---|---|
| Humidity Range | 0% to 100% RH |
| Communication Interface | USB |
| Category | Data Logger |
| Resolution | Temperature: 0.1°C; Humidity: 0.1% RH |
| Sampling Interval | 1 second to 24 hours (configurable) |
| Operating Environment | 0% to 100% RH |
| Battery Life | 1 year (typical) |
Describes the VDR's role in recording navigation and hull data for accident investigation.
Identifies and explains the functions of the primary VDR recording control unit.
Details the components and operational capabilities of the user interface panel.
Provides sequential steps for powering on and initializing the VDR system.
Outlines the safe procedure for shutting down the VDR system.
Explains fundamental interactions with the OPU touch panel and on-screen buttons.
Guides users on monitoring, acknowledging, and clearing system alerts.
Details the process for transferring recorded data to a USB flash drive.
Explains how to verify the status and results of recorded data checks.
Covers changing system settings like screen brightness, volume, and password.
Provides guidelines for preserving recorded data during a maritime incident.
Lists safety warnings and handling instructions for the float-free capsule and its EPIRB function.
Outlines routine checks for keeping the VDR system in optimal operating condition.
Provides solutions for common VDR malfunctions and explains error codes.
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