Diagnostics And Troubleshooting On; System Fans; Resetting The Power Supply - HP Z400 - Workstation Maintenance And Service Manual

System fans

This workstation includes:
●
One rear system fan
● One CPU heatsink fan
●
One power supply fan
In addition, an optional front system fan is available for special environments, and some graphics cards
include onboard fans.

Resetting the power supply

If an overload triggers the power supply overload protection, power is immediately disconnected.
To reset the power supply:
1. Disconnect the power cord from the workstation.
2. Determine what caused the overload and fix the problem. For troubleshooting information, see
Diagnostics and troubleshooting on page
3. Reconnect the power cord and restart the workstation.
When you power off the workstation through the operating system, power consumption falls below what
is considered low power consumption but does not reach zero. This low power consumption feature
extends the life of the power supply.
ENWW
137.
Workstation specifications 11