ZyXEL MI-7248 User Guide - Page 265
Troubleshooting
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CHAPTER 47 Troubleshooting This chapter offers some suggestions to solve problems you might encounter. The potential problems are divided into the following categories. • Power, Hardware Connections, and LEDs • MM-7201 Access and Login 47.1 Power, Hardware Connections, and LEDs V The MM-7201 does not turn on. None of the LEDs turn on. 1 Make sure the MM-7201 is inserted correctly. 2 Make sure the MS-7206 system is receiving power. If it is not, see the appropriate User's Guide. 3 Inspect your cables for damage. Contact the vendor to replace any damaged cables. 4 Remove and re-insert the MM-7201 into the MS-7206 chassis. 5 If the problem continues, contact the vendor. V The ALM LED is on. 1 Make sure the fans in the MS-7206 chassis are working. If they are not, see the appropriate User's Guide. 2 Make sure the MM-7201 is operating within its operating temperature and humidity. If it is not, move the MS-7206 system to a more suitable environment. 3 If the problem continues, contact the vendor. MS-7206 User's Guide 265