8.4.1 Parts Required For Periodic Replacement; 8.4.2 Replacement Of Magnetron - JRC JMA-5212-4/6 User Manual

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8.4.1 Parts Required for Periodic Replacement

Here are parts required for periodic replacement

Before replacing the magnetron, turn off the main power source, wait for five minutes or more, and confirm

that no charge remains in the high-voltage modulator circuit.

When mounting a new magnetron, do not touch the magnet with a screwdriver or put it on an iron plate. After

replacement, connect the lead wire correctly.

Handling of Magnetron under Long-Time Storage

The magnetron that has been kept in storage for a long time may cause sparks and operate unstably when its

operation is started. Perform the aging in the following procedure:

(1) Warm up the cathode for a longer time than usually. (20 to 30 minutes in the STBY state.)

(2) Start the operation from the short pulse range and shift it gradually to the longer pulse ranges. If the

operation becomes unstable during this process, return it to the standby mode immediately. Keep the

state for 5 to 10 minutes until the operation is restarted.

1. Magnetron

3. LCD backlight

4. Fan motor

5. Backup battery