HP Z400 Workstation - Manual (Page 13)

Product diagnostics
Table 1-4 Product diagnostics
Topic Location
Diagnostics tools The HP Vision Field Diagnostics utility can be downloaded
from the HP Web site. To use this utility, refer to the
appropriate section of the workstation Maintenance and
Service Guide.
Audible beep and LED code
definitions Refer to the appropriate section of the workstation
Maintenance and Service Guide for detailed information
about beep and Light Emitting Diode (LED) codes
applicable to the workstation.
ENWW Product diagnostics 5