The JUQ405 features pluggable terminal blocks for easier maintenance.
Hold the Option key while dragging icons if you wish to configure specialized screen mirroring. Comprehensive Troubleshooting Protocols juq405 install
| Problem | Likely Cause | Fix | | :--- | :--- | :--- | | | Faulty cable or low voltage | Test with a known-good USB-C cable. Measure voltage at the plug – must be 5V±0.25V. | | App can’t find JUQ405 | Bluetooth permission denied | On Android, enable “Nearby devices” permission. On iOS, reinstall the app. | | Video is choppy/laggy | MicroSD too slow | Replace with a U3/V30 card. The JUQ405 requires minimum 80MB/s write speed. | | Overheating after 30 min | Direct sunlight + high bitrate | Lower resolution to 1080p (from 4K). Add a static cling shade. | | Constant beeping sound | No storage detected | Re-seat the MicroSD card. Format to FAT32/exFAT as per manual. | | Windows doesn’t recognize | Driver signature enforcement | Disable driver signing in Windows Recovery, then reinstall the JUQ405 driver. | The JUQ405 features pluggable terminal blocks for easier
Allow 10 cm of clearance on all sides of the unit for optimal airflow. System & Digital Requirements Measure voltage at the plug – must be 5V±0
Use isopropyl alcohol and the microfiber cloth. Scrub for 30 seconds, then let dry. Any dust or grease will compromise the 3M adhesive’s bond.
With power OFF, use your multimeter to check for shorts between VCC and GND. The meter should show open line (OL). If you see 0 ohms, you have a short.
Plug the grounding wire into your facility’s standard ground loop.