Computer systems should have on-line diagnostic capabilities, if the detection and diagnosis of computer faults is required.
Additional Information:
The detection and diagnosis of computer faults can be complicated and difficult. On-line diagnostic capabilities, which allow computer systems to be tested while they are running, can be effective for finding faults because they test the computer under operating conditions. On-line diagnostic capabilities should be able to check both hardware and software when the symptoms may appear similar to maintenance personnel. Checks may be used to detect software malfunctions and unauthorized changes in software.