HP Z220 SFF, Z220 CMT, Z420, Z620, and Z820 Workstations Maintenance and Service Guide
Activity Possible cause Recommended action
HP Drive Key). See the ROM Flash section of the
Maintenance and Service Guide
at http://www.hp.com/
support/workstation_manuals. SoftPaq is a self-extracting
executable, which contains instructions for its use, that
enables you to upgrade the ROM. To download the Softpaq
executable, visit
http://www.hp.com/go/workstationsupport.
3. The problem might be on the system board. Contact HP for
assistance.
4.
Red Power LED blinks
nine times, once every
second, followed by a
two-second pause. Nine
beeps.
System powers on but
does not start.
1. The problem might be on the system board. Contact HP for
assistance.
2. The problem might be in the CPU. Contact HP for
assistance.
System does not power-
on and LEDs are not
blinking. No beeps.
System unable to power
on.
CAUTION: Internal components might be powered even when
the computer is off. To prevent damage, disconnect the
computer power cord before you remove a component.
To resolve the problem, choose one of the following options:
Press and hold the power button for less than four seconds. If
the hard disk drive LED turns green, then:
1. Remove the expansion cards one at a time and try holding
the power button again for less than four seconds.
2. The problem might be on the system board. Contact HP for
assistance.
Press and hold the power button for less than four seconds. If
the hard disk drive LED does not turn on green then:
1. Check that unit is plugged into a working AC outlet.
2. Open the access panel and check that the power button
harness is properly connected to the system board.
3. Check that all power supply cables are properly connected
to the system board.
4. Check the power supply functionality.
a. Disconnect the AC power.
b. HP Z820 Workstation only—Remove the power supply
from the chassis. All other workstations, unplug cables
connected to system board.
c. Plug in AC power.
●
If the power supply fan spins and the BIST LED
illuminates, the power supply is good; replace the
system board.
●
If the power supply fan does not spin or the LED
does not illuminate, replace the power supply.
*
The BIOS option you select controls the blue LED function during these suspend modes.
Diagnostic codes and errors 147