General issues of computer repair, general concept and types of maintenance

1 General questions and types of maintenance
2 main operational characteristics

1 operation of the computer. This is the use of it for the performance of the entire complex. It is possible for it to carry out maintenance tasks. Maintenance services are carried out. This is a set of organizational measures, including the provision of the VM. necessary hardware for efficient maintenance

there are three types of maintenance
And this is the maintenance of one computer by the forces and means of the technical staff
Included
- Equipment control element base and power supply
-Controlled adjustment equipment for testing and repair
- A set of electrical measurements of equipment
- A set of software tests to verify the performance of the computer
-Tools and repair supplies
-Auxiliary equipment and fixtures

b) Group maintenance serves for several concentrated on one computer center
c) Central maintenance is a network of repair service centers and branches which are centrally organized.

Assembly and commissioning
Commissioning
Elimination of complex failures
Centralized repair of blocks
Supply with spare parts and accessories
Assist service personnel on maintenance issues
Staff training for operation and maintenance of equipment
Commissioning of existing and new operating systems and application packages

All activities included in the maintenance are divided into three groups.
Monitoring of the technical condition and fault indications
Preventive maintenance is a series of activities aimed at maintaining from a given technical condition in a certain period of time and consists of two types of work: external inspection and cleaning, lubrication and elimination of defects
When viewed test

Routine maintenance is a set of works aimed at the restoration of working capacity by replacing them and restoring parts of units and blocks.

The degree of suitability of a computer for use and the possibility of its maintenance is determined by the following performance characteristics
Performance
Reliability
Preservation
Repair for suitability
Durability
And reliability

To assess the reliability of its quality characteristics
Utilization rate
Coefficient of technical use

Availability factor
Prevention efficiency ratio
MTBF
Average recovery time