column of the troubleshooting chart correspond
the checks and corrective actions indicated in
the troubleshooting chart. If the corrective
to the paragraph numbers of the performance
measures indicated do not result in correction
checks and the alternate performance checks.
of the trouble, higher category of maintenance
When a malfunction has been detected, all elec-
trical connections, fuses, mode settings, and
code settings should be checked. The corrective
3-18. Troubleshooting Chart
action, other than for the replacement of fuses,
When a fault has been detected within the
calls for the replacement of the complete RT-
RT-859/APX-72, refer to the troubleshooting
859/APX-72. Paragraph 319 details the com-
chart below to correct the malfunction. The
paragraph references given in the Ref para No.
ponent removal and replacement procedures.
( l ) Remove the power and control cable
3-19. Removal and Replacement
a. To remove the RT-859/APX-72 from the
(2) Remove the antenna cable connector.
MT-3809/APX-72, or MT-3948/APX-72, pro-
(3) Disengage the two screw clamps on
teed as follows: