V.35 Shunt Procedure - Multitech MultiFRAD FR221 User Manual

MultiFRAD User Guide

V.35 Shunt Procedure

If you are using an external link device on a data port (or the trunk port), and the connection will be a
V.35 connection, the corresponding internal shunt must be moved from its default RS232C position
prior to cabling and power-up. The following steps detail the procedures for switching the shunt.
Step Procedure
1 Ensure that the external power supply is disconnected from the MultiFRAD.
2 Turn the MultiFRAD upside down and remove the two cabinet mounting screws (Figure 2-3).
Figure 2-3. Cabinet Mounting Screw Locations
3 While supporting the back panel, turn the MultiFRAD right side up, then slide the PCB
assembly out the back of the chassis.
4 Place the PCB assembly on a flat, grounded surface.
Note: For the FR221/V2 only, you will have to remove the voice/fax daughterboard by
performing the following steps to gain access to the shunt locations on the main PCB
assembly.
a. Remove four screws (Figure 2-4) that secure the daughterboard to the standoffs.
b. Grasp the corners of the daughterboard, then gently lift the front edge of the
daughterboard upward, pivoting about the jacks at the back panel of the MultiFRAD,
until the long pins are free of the mating connector on the main PCB assembly.
Remove the daughterboard and set it temporarily aside.
Figure 2-4. Daughterboard Mounting Screw Locations
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