3Com 3CRWE554G72 User Guide - Page 88

88 CHAPTER 6: TROUBLESHOOTING Alert LED adapter part number shown on the OfficeConnect power adapter you are using. Alternatively, quote the part number for your region: Table 3 Power Adapter Part Numbers Part Number 3C16740A 3C16741A 3C16742A 3C16743A 3C16744A 3C16745A 3C16747A 3C16748A Region US and Canada UK Europe and Middle East Japan Australasia (except Japan and Korea) South Africa Korea Argentina The Alert LED will flash when the Gateway unit is first powered up while the system software checks the hardware for proper operation. Once the Gateway has started normal operation, the Alert LED will go out. ■ If the Alert LED does not go out following start up, but illuminates continuously, this indicates that the software has detected a possible fault with the hardware. Remove power from the Gateway, wait 10 seconds and then re-apply power. If the Alert LED comes on continuously again, then a fault has been detected. Locate the copy of the Gateway software on the accompanying CD-ROM or 3Com web site (http://www.3com.com) and upload it to the Gateway to see if this clears the fault (refer to "Recovering from Corrupted Software" below). If this does not fix the problem, contact your supplier for further advice. ■ During normal operation, you may notice the Alert LED lighting briefly from time to time. This indicates that the Gateway has detected a hacker attack from the Internet and has prevented it from harming your network. You need take no specific action on this, unless you decide that these attacks are happening frequently in which case you may wish to discuss this with your ISP. The Gateway logs such attacks, and this information is available through the Status and Logs screens.