User manual 3COM THINNET XCVR MODULE

[. . . ] Standard warranty service for software products may be obtained by telephoning 3Com's Service Center or an Authorized 3Com Service Center, within the warranty period. Products returned to 3Com's Service Center must be pre-authorized by 3Com with a Return Material Authorization (RMA) number marked on the outside of the package, and sent prepaid, insured, and packaged appropriately for safe shipment. The repaired or replaced item will be shipped to Customer, at 3Com's expense, not later than thirty (30) days after receipt by 3Com. [. . . ] SWITCH 1 With internal termination, the cable is connected directly to the BNC socket, E I and the termination X N T TC selector (SWITCH 1 in O Figure 2) moved to the A `INT' position. X Access to the slide switch is through a slot in the metal mounting panel of the Transceiver Module, where the positions are Figure 2 labelled. Ensure that SWITCH 1 is selecting the termination mode you require. Page 1 I A L Page 4 SQE Test The SQE Test function should be enabled or disabled depending on the application. The function must be disabled for operation when installed in a Repeater. The function should be enabled for operation when connected to a LinkBuilder ECS Local Bridge Module 3C12050/1. SQE Test is disabled when the jumper plug of LINK1 (Figure 1) occupies the DIS position. 3 Installation Remove the blanking plate from the unit in which you are going to install the Transceiver Module. Keep the blanking plate in a safe place so that it can be replaced if the Transceiver Module is removed in future. Installing on a Stackable Hub or Repeater For FMS Stackables and Repeaters, hold the mounting panel with the pin header side of the board down. For FMS II Stackables, hold the mounting panel with the pin header side of the board up. Insert the edge connector end of the Transceiver Module into the rear of the mother device. Slide the Transceiver Module in carefully to engage in the slot and push it fully home. Fix the mounting panel of the Transceiver Module to the back panel using the two screws from the blanking plate. Installing on an ECS or MSH Module Position the Module on a flat surface with the 16-way socket facing up. Hold the Transceiver Module by the mounting panel and board edge with the header pins facing down. Pass the board of the Transceiver Module through the cut-out in the front panel. Align the socket on the card with the pins on the Transceiver Module and push down firmly to connect. With the 3C18146 Expansion Module, you align the header and pins and press gently to engage the pins. [. . . ] Before you install the Transceiver Module, you must remove the mother device from the network and all power sources. Modules must be removed from the Chassis (you do not need to power down the chassis first). The 3C18146 Expansion Module must be separated from its mother module. [. . . ]