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61179641L5-5C 6-1
Section 6
Maintenance
INTRODUCTION
The Total Access 1248 does not require routine maintenance for normal operation.
ADTRAN does not recommend that repairs be attempted in the field. Repair services can be
obtained by returning the defective unit to ADTRAN. For more troubleshooting information,
refer to the Total Access 1100/1200 Series Troubleshooting Guide (P/N 61179741L1-44). For
warranty information, refer to “Appendix A, Warranty”.
Fan Modules
Four fans are installed in the Total Access 1248 in a removable module to maintain the
hardware within proper operating temperature tolerances. With the exception of the filter, the
fan module is not field serviceable. The fan module (P/N 1179675L1) is field replaceable and is
available from ADTRAN. Figure 6-1 illustrates the fan module with the filter installed.
Figure 6-1. Fan Module with Filter
FAN MODULE
1179675L1