Technicians typically follow a systematic approach to isolate the fault:
Most JRC models, such as the JMA-9100 series or the JMA-5200mk2 , have built-in diagnostic tools. no sync signal jrc radar
Before opening any hardware, verify the integrity of the external wiring. no sync signal jrc radar
Verify that the correct DC or AC voltage is reaching the scanner unit. A drop in power can prevent the magnetron from firing, which is often required to generate the sync pulse. no sync signal jrc radar