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Preventive Maintenance and Fault-Finding
4.2.3
Servicing
4.2.3.1
Conditions Requiring Servicing
Removing the covers of this equipment may invalidate any warranties, cause a
safety hazard or/and affect the EMC performance. Refer all servicing to service
personnel who have been authorized by Ericsson.
Unplug the equipment from the wall outlet and refer servicing to qualified service
personnel under the following conditions:
1. When the power supply cord or plug is damaged.
2. If liquid has been spilled, or objects have fallen into the product.
3. If the product has been exposed to rain or water.
4. If the product does not operate normally by following the operating instructions.
5. If the product has been dropped or the case has been damaged.
6. When the product exhibits a distinct change in performance.
7. If the equipment has been subject to a lightning strike or power surge.
4.2.3.2
Replacement Parts
When replacement parts are required, be sure only parts specified by Ericsson (or
having the same characteristics as the original part) have been used. Unauthorized
substitutions may result in fire, electric shock or other hazards.
4.2.3.3
Checks on Completion of Servicing
Upon completion of any service or repairs to this product, ask the service technician
to perform safety checks to determine that the product is in a safe operating
condition. Performance and EMC checks may also be required.
4-4
Adjust only those controls that are covered by the operating instructions, as an
improper adjustment of other controls may result in damage and will often
require extensive work by a qualified technician to restore the product to its
normal operation.
Warning!
EN/LZT 790 0005 R7A
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