Furuno ETR-30N manual All Clear, CPU Board

3.4 All Clear

When the sounder picture appears to be abnormal, execute the “all clear” function from the ETR-30N to try to restore normal operation. All clear erases all transducer settings, so reenter them referring to paragraph 2.2.

1.Turn off the ETR-30N.

2.Remove the cover.

3.Short between #5 and #6 of J9 on the CPU Board and then turn on the power.

CPU Board

02P6307

2 4 6

1 3 5

J9

ETR-30N, cover removed

4. After the TX/STBY LED flashes, turn off the power.

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