Vari Lite VL6 Series, Руководство по обслуживанию

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Class Definitions
Support for VARI*LITE products is provided by the Product Support
Department and by various technical publications. Authorization for field
repair of the equipment is based upon a user class rating. This protects
both the user and the equipment.
Class 1. Users with no training or resources, but that are covered by
warranty. These would include architectural, DMX clients, clients of
dealers, and some limited leases. No maintenance to VARI*LITE
equipment should be performed by Class 1 users.
Class 2. Users with limited training and resources, and covered by
warranty. These would include dealers, some leases, and Vari-Lite road
staff. Maintenance to VARI*LITE equipment should be limited to replace-
ment of end-item (the equipment itself) sub-assemblies or easily accessible
components (e.g., a fuse) in order to return the equipment to proper opera-
tion.
Class 3. Users with full training, extended resources, but that are not
covered by warranty. These would include Vari-Lite office technicians,
distributors, and sub-distributors. Maintenance is applicable to situations
in which tools and experience of the technician allow for more extensive
procedures such as sub-assembly repair.
Class 4. Users with full technical certification and training, working from a
Vari-Lite repair depot. (Note: Vari-Lite Training Department does not
grant technical certification.)
Fault Isolation
The fault isolation (troubleshooting) section of the manual provides a
logical path of fault isolation and repair designed to return the equipment to
proper operation. The fault isolation procedures for the equipment end
item have been broken into two categories, which lead the technician to
maintenance procedures that he/she can reasonably be expected to perform.
The criteria for separating fault isolation and maintenance procedures into
two categories can be defined by Class 2 and Class 3 repairs. Class 2
repairs only require the technician to replace an end item subassembly or
easily accessible component (e.g., a fuse) in order to return the equipment
to proper operation. Class 2 repairs are applicable to situations in which
tools and/or experience of the technician are limited, or time does not
permit extensive maintenance. Class 3 repairs (identified as Shop Only)
involve in-depth repair to subassemblies that have been identified as faulty.
Class 3 repairs are applicable to situations in which tools and experience of
the technician allow for more extensive procedures. In some cases, even
though a technician may have the ability and resources to perform
extensive repair, he/she may decide to replace the entire subassembly in
order to return the equipment to proper operation more quickly. The subas-
sembly could then be repaired at a more appropriate time.