80-J4866-2 Rev. G
MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION
E-7
Preventive Maintenance Inspection
Inspecting the Terrestrial Antenna and TDM, and the Satellite Data Modem (SDM)
4.
Make sure the antenna is securely attached to
the mount. Check the mount hardware to
make sure it is secure and does not show any
signs of loosening.
5.
Check that the antenna cable (TNC)
connectors have not worked themselves loose
from the TDM and that the TDM is securely
attached to the MAS.
6.
Check the TDM lights. Normally, the left-side
LED will be blinking green and the right-side
LED will be off.
Refer to Chapter 9 in the
MCP100 Diagnostic
Guide
for other TDM light states.
Go to
to complete the terrestrial
antenna and TDM inspection.
7.
Make sure the SDM is securely attached to
the SDM mount. Check the mount hardware to
make sure it is secure and does not show any
signs of loosening.
8.
Twist SDM to verify that the SDM connector is
hand-tightened and secure. The SDM
mounting bolts should be tightened to the
recommended torque of 72
inch
/pounds (not
foot/pounds).
Caution
Do not use refrigeration/tar tape or RTV
sealant on the SDM connector.
Go to
to complete the SDM inspection.
07AAA_48
Left-side
(green)
LED
Right-side
(red)
LED
TNC
Connectors
05AAA_043_T
IU IU
DSPL
DS
PL
MDM
MD
M
PWR
PW
R
I / 0
I /
0
U
S
B / S
ER
U
S
B
/
S
E
R
MAS
TDM
TDM Cable
I/0
I/0
Terrestrial
Antenna
06AAA_127