Garmin GFC 600H Maintenance Manual page 56

Replace washer if damaged. Replace the probe per Section 6.6, if required. Verify the electrical
bond following procedure in Section 4.5.
4. To ensure GMU 44( ) performance is not compromised by magnetized surrounding structure
perform the Magnetic Interference Check in accordance with Section 7.7.2. Perform a GMC 605H
and GSU 75H Magnetometer Calibration in accordance with Section 7.7.3 and
Section 7.7.4.
190-02081-03
Rev. 3
GFC 600H HFCS Part 27 STC Maintenance Manual
Page 4-7