Preventive Maintenance and Fault-finding
8.1 Introduction
This chapter details the schedules and instructions, where applicable, for routine
inspection, cleaning and maintenance of the equipment which should be performed
by an operator. It also details basic fault-finding procedures, software and firmware
upgrade procedures and disposal information.
8.2 Preventive Maintenance
8.2.1 Routine Inspection
Check cooling fan operation regularly. The fans are temperature controlled so may
not be on if the ambient temperature is low. Refer to Technical Specification for
more information.
Note: Failure to ensure a free flow of air around the unit may cause overheating.
This condition is detected by a temperature sensor on the Host Card or an
MPM and causes the alarm to be raised. See Section 8.5.3.1, for further
information.
8.2.2 Cleaning
Caution!
Do not use liquid cleaners or aerosol cleaners.
Unplug the unit from the wall outlet before cleaning the exterior with a damp cloth.
Do not use liquid cleaners or aerosol cleaners.
Note: Only the exterior of the case should be cleaned.
8.2.3 Servicing
8.2.3.1 Damage Requiring Service
Warning!
Do not remove the covers of this equipment. Hazardous voltages are present within
this equipment and may be exposed if the covers are removed. Only Ericsson
trained and approved service engineers are permitted to service this equipment.
Unplug the equipment from the wall outlet and refer servicing to qualified service
personnel under the following conditions:
2/1553-FGC 101 1400 Uen B
8-3
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