3: INSTALLATION AND WIRING3-6 « FC4A MICRO SMART USER ’S MANUAL »Removing the Communication Connector CoverBefore mounting a communication module or HMI base module nextto the slim type CPU module, the communication connector covermust be removed from the CPU module. Break the communicationconnector cover on the slim type CPU module as described below.1. Carefully push in the communication connector cover at position (1) to break bridges A as shown in either figurebelow.2. The other end (2) of the communication connector cover will come out as shown at left below. Push in this end.3. Then, the opposite end (3) will come out. If the end does not come out, insert a thin screwdriver into the gap and pullout the end (3).Hold the communication connector cover at (3), and pull off the communication connector cover to break bridges B.Caution • When using a thin screwdriver to pull out the communication connector cover, insert the screw-driver carefully and do not damage the electronic parts inside the CPU module.• When first pushing in the communication connector cover to break, take care not to injure yourfinger.Bridges BBridges ACommunicationConnector Cover(1)(2)(3)