Furuno FAR-2107 Series Service Manual page 398

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6.5.3 Replacement of major parts of TR unit

1. Guarantee of Antenna Motor and Magnetron

The life of parts varies with operating conditions. The table below shows the estimated

lifetime to be used as a guide.

Antenna motor

Carbon brush for

2. Replacement of Magnetron

The Magnetron is a ferromagnetic substance. When replacing the Magnetron, remove

your watch (a watch can be damaged) and remove it by using a non-magnetic

screwdriver. The outline of the replacing procedure is as follows:

1. Refer to the photo illustrating part layout in the following pages and remove the

- FAR-2xx7: page. 2-11

- FAR-2837S: page. 2-24

2. Turn the power on and check the magnetron heater voltage.

3. Wait for about 30 minutes in the ST-BY state.

4. Put the radar in the send state in the long range and check the magnetron current.

5. Wait for about 30 minutes in the send state.

6. Execute tune initialize in "[Menu] -> 1 -> 3:TUNE INITIALIZE".

7. Reset each preset time to "0" in "[Menu]->0->4->8:ON TIME, 9:TX TIME".

Table 6.5.8 The Life of Antenna Motor and Magnetron

10,000 hours

MG120-5x6x11

10,000 hours

For X-Band, 10 kW (RTR-078)

For X-Band, 25 kW (RTR-079, 81)

For S-Band, 30 kW (RTR-80, 82)

For X-Band radar: 24 rpm

For X-Band radar: 42 rpm

For S-Band radar: 200/220 VAC

For S-Band radar: 380/440 VAC

For S-Band radar: 220 VAC/50 Hz

For S-Band radar: 220 VAC/60 Hz

For S-Band radar: 440 VAC/60 Hz

For D8G-516/ D8G-571 motor

- FAR-2827W: page. 2-20

- FAR-2837SW: page. 2-30

6.5 Replacement of Major Parts