HP Z1 Maintenance And Service Manual page 93

Table 4-7 Diagnostic lights and audible codes (continued)
Activity
Red Power LED blinks
eight times, once every
second, followed by a
two-second pause. Eight
beeps.
Red Power LED blinks nine
times, once every second,
followed by a two-second
pause. Nine beeps.
System does not power-on
and LEDs are not blinking.
No beeps.
The BIOS option you select controls the blue LED function during these suspend modes.
*
Possible cause
CAUTION:
Invalid ROM based on
bad checksum. the computer is off. To prevent damage, disconnect the computer
power cord before you remove a component.
1.
2.
3.
System powers on but 1.
does not start.
2.
CAUTION:
System unable to power
on. 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.
2.
Press and hold the power button for less than four seconds. If the
hard disk drive LED does not turn on green then:
1.
2.
3.
Recommended action
Internal components might be powered even when
Clear CMOS.
NOTE: See Clearing and resetting the CMOS
on page 95 for details.
Upgrade the ROM using SoftPaq, either from the hard disk
drive, CD, diskette, or USB removable device (for example,
HP Drive Key). See the ROM Flash section of the
Maintenance and Service Guide at
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.
The problem might be on the system board. Contact HP for
assistance.
The problem might be on the system board. Contact HP for
assistance.
The problem might be in the CPU. Contact HP for assistance.
Internal components might be powered even when
Remove the expansion cards one at a time and try holding
the power button again for less than four seconds.
The problem might be on the system board. Contact HP for
assistance.
Check that unit is plugged into a working AC outlet.
Open the access panel and check that the power button
harness is properly connected to the system board.
Check that all power supply cables are properly connected
to the system board.
Diagnostic codes and errors
http://www.hp.com/
85