Located inside the antenna pedestal, this component measures rotation.
This article is for informational purposes. Always refer to the official JRC service manual for your specific radar model (JMA-6100/7100/9100/9170/NXT/NX series) before performing repairs. no sync signal jrc radar
Resolving a "No Sync Signal" requires a methodical approach to avoid unnecessary parts replacement. The first step is a "heartbeat check": verifying if the antenna is rotating. If the antenna is stationary, the issue is likely a power failure or motor fault, not the sync circuit itself. Assuming the antenna rotates, the next step is utilizing built-in test equipment (BITE) or diagnostic software available on JRC units. However, the most definitive test is often a continuity check or voltage measurement. A marine electronics officer or technician will measure the voltage at the scanner unit output and compare it to the input at the display unit. If the signal exists at the source but not at the display, the cable is the fault. If the signal exists at the display input but the alarm persists, the display board is likely defective. Located inside the antenna pedestal, this component measures
Do not operate the radar in a "No Sync" state. The magnetron may transmit continuously without proper timing, leading to: Resolving a "No Sync Signal" requires a methodical