National Instruments SCB-68 - Manual (Page 86)

Chapter E Soldering and Desoldering on the SCB-68
SCB-68 Shielded Connector Block User Manual E-2 ni.com
1. Disconnect the 68-pin cable from the SCB-68 if it is connected.
2. Remove the shielding screws on either side of the top cover with a
Phillips-head number 1 screwdriver. You can now open the box.
3. Loosen the strain-relief screws with a Phillips-head number 2
screwdriver.
4. Remove the signal wires from screw terminals.
5. Remove the device-mount screws and the 68-pin connector screws.
6. Tilt the SCB-68 up and pull it out.
To reinstall the SCB-68, reverse the order of the steps.
The SCB-68 ships with wire jumpers in the F and G positions, as
Figure 2-1,
SCB-68 Printed Circuit Diagram , shows. You must remove
the wire jumpers to use the positions. Use a low-wattage soldering iron
(20 to 30 W) when soldering to the SCB-68.
To desolder on the SCB-68, vacuum-type tools work best. Be careful to
avoid damaging the component pads when desoldering. Use only
rosin-core electronic-grade solder, because acid-core solder damages the
printed-circuit device and components.