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.
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 Annex B, 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 and causes an alarm to
be raised.
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 top cover of this equipment. Hazardous voltages are present
within this equipment and may be exposed if the top cover is 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:
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