Furuno 1715 manual Magnetron Heater Voltage, MD board

3. INSTALLATION

3.5 Magnetron Heater Voltage

Magnetron heater voltage is formed at the MD Board of the antenna unit and is preadjusted at the factory. Therefore, no adjustment is required. However, verify the voltage as below.

WARNING

ELECTRICAL SHOCK HAZARD

Do not open the equipment.

DO NOT attempt the procedure below unless totally familiar with electrical circuits.

1.Open the antenna cover and open the shield plate.

2.Turn on the power. DO NOT transmit.

3.Connect a multimeter, set to 10 VDC range, between #6 (+) and #4 (-) of test point TP804 on the MD Board.

TP804

VR801

MD board

4.Confirm that the multimeter shows 8.0 V ±0.1 V. If it does not, adjust potentiometer VR801 on the MD Board.

5.Turn off the power.

6.Fasten the shield plate.

7.Close the antenna cover.

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