Viavi MTS 4000 Base Unit, User Manual

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Chapter 13 Maintenance and Troubleshooting
Maintenance procedure
198 User Manual 77000000206 Rev. 007
Maintenance procedure
Maintenance work on this instrument must only be undertaken
by qualified personnel using suitable equipment.
In most cases, it is advisable to contact the nearest Viavi Service Centre,
which will undertake the appropriate troubleshooting and repair work.
The performance and technical complexity of the 4000 Platform class
this instrument in a new generation of equipment, for which Viavi has laid
down a maintenance policy based on the principle of standard module
replacement.
In implementation of this policy, we have set up powerful card trouble-
shooting test resources in our factories and a rapid dispatch system
operating between our factories and branches.
Only by this procedure can the high quality of the instrument continue to
be ensured after repair work. This procedure also has the advantage of
reducing repair costs and time.
In the interests of quality and efficiency, we strongly recommend adop-
tion of the following procedure in the event of a fault, before any other
steps are taken:
– Verify that the instrument is plugged in.
– Check the connections of any peripheral equipment to the 4000
Platform.
– If a fault is detected, or in case of doubt, it is advisable to contact the
nearest Viavi Service Centre, which will undertake the appropriate
repair work.
Returning an
instrument
When returning an instrument, it is essential to indicate the following
minimum information:
– the type and serial number of the instrument (on the identification
label) and the configuration code (under the bar code)
– a description of the fault found on the instrument.
The returned instrument will then be repaired and calibrated.
Guarantee
conditions
Any repair operation supervening within the guarantee period of the
instrument will be carried out at the expense of Viavi. However, for any
sub-assembly upon which work has been carried out otherwise than by
Viavi Service Centers, the cost of a replacement sub-assembly will be
invoiced.