190-01007-01
GTN 725/750 Maintenance Manual
Rev. 5
Page 4-11
Table 4-10 Mechanical Failures
Problem
Possible Cause
Corrective Action
GTN unit moves
freely in and out of
rack.
Install arm is not tightened.
Tighten install arm. Refer to section 5.1 for
details.
Install arm is detached from
jackscrew.
Replace GTN bottom cover. Refer to section 5.6
for details.
Install arm
jackscrew spins
freely for more than
18 revolutions
when tightening or
loosening.
Install arm jackscrew head is
stripped.
• If the GTN is stuck in the installed position,
refer to section 5.2 for details.
• Remove and replace the GTN bottom cover.
Refer to section 5.6 for details.
