Tait TM9100 Service Manual page 132

4.
Important
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Important
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132 Disassembly and Reassembly
If the thermal paste on the heat-transfer block
cooper plate of the main board
thermal paste must be applied:
Remove any residue of the old thermal paste from both contact
surfaces.
Use Dow Corning 340 silicone heat-sink compound
(IPN 937-00000-55).
Ensure that no bristles from the brush come loose and
remain embedded in the paste. The paste needs to be
completely free of contaminants.
Use a stiff brush to apply 0.1cm
complete contact surface on the tin-plated copper plate (refer to
Figure 5.6 on page 131).
1$
Place the main board in position on the heat-transfer block
push them together to spread the thermal paste.
You must observe the following order of assembly to ensure
that the main board and the connectors are not assembled
under stress.
Use a torque-driver with a 3/16 inch (5mm) socket to fasten the
D-range screwlock fasteners
Fit the RF connector lock washer
9/16 inch (14mm) long-reach socket to fasten the RF connector nut
1!
to 15lb·in (1.7N·m).
Use a torque-driver with a Torx T10 bit to fasten the three screws
to 15lb·in (1.7N·m).
Loosen both the D-range screwlock fasteners
1!
RF connector nut .
Re-tighten both the D-range screwlock fasteners
1!
RF connector nut to the torques indicated in steps
Fit the power connector seal
F
or the tin-plated
1$
has been contaminated, new
3
of thermal paste over the
H
to 8lb·in (0.9N·m).
1@
. Use a torque-driver with a
H
and the
H
and the
I
.
TM9100 Service Manual
© Tait Electronics Limited August 2005
F
, and
b
7 and 8.