HP Z400 Maintenance And Service Manual page 212

Table 6-9
LED state
Flashing
Solid or flashing
None
200 Chapter 6 Diagnostics and troubleshooting
LED color definitions (continued)
LED color System status
Blue System is in Standby.
Red System has experienced an error. (See
messages on page
No light System is in Hibernate, or is off.
POST error
201.)
ENWW