User guide

Preventive Maintenance and Fault-finding
Do not attempt to service this product as opening or removing covers may expose
dangerous voltages or other hazards. Refer all servicing to qualified service
personnel who have been appointed or authorized by Ericsson.
Isolate the Multiplexer from the AC power after the following conditions:
1. When the AC power cord or plug is damaged.
2. When a new fuse blows within a short time of replacement or when there is
reason to suspect a faulty power supply.
3. When liquid has been spilled, or objects have fallen into the product; or when
the product has been exposed to rain or water.
4. When the product does not operate normally after following the operating
instructions. Adjust only those controls that are covered by the operating
instructions; 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.
5. When the product has been dropped or the case has been damaged.
6. When the product exhibits a distinct change in performance.
5.3.2 Replacement Parts
When replacement parts are required, ensure the service technician has only used
parts specified by the manufacturer or have the same characteristics as the original
part. Unauthorized substitutions may result in fire, electric shock or other hazards.
5.3.3 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. Carry out any performance and EMC checks that may be required.
5.4 Maintenance and Support Services
5.4.1 Warranty
All Ericsson products and systems are designed and built to the highest standards
and are covered under a comprehensive 12 month warranty.
More information can be obtained from Ericsson Customer Services; contact
information is given in the preliminary pages of this Reference Guide.
2/1553-FGC 101 1014 Uen B
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