Led Color Definitions - HP Z800 Maintenance And Service Manual

Table 6-8
Activity
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.
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Some workstation models do not have BIST LED functionality. For BIST information, see the Maintenance and Service Guide of
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the workstation.
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LED color definitions

The following table describes what each LED light on the workstation front panel signifies.
Table 6-9
LED state
Solid
Flashing
248 Chapter 6 Diagnostics and troubleshooting
Diagnostic lights and audible codes (continued)
Possible cause
System unable to power on.
LED color definitions
LED color System status
Blue System is on.
Blue System is in Standby.
Recommended action
CAUTION:
Internal components might be powered even when the
workstation is off. To prevent damage, disconnect the workstation 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 4 seconds. If the hard drive
LED turns green, then:
1. Remove the expansion cards one at a time and try holding the
power button again for less than 4 seconds.
2. The problem might be on the system board. Contact HP for
assistance.
Press and hold the power button for less than 4 seconds. If the hard 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. Remove power supply from system chassis. (See
supply on page 86 for details.)
c. Plug in the AC power.
If the power supply fan spins and the BIST
is functional. The problem might be on the system board. Contact HP for
assistance.
If the power supply fan does not spin or the BIST
problem might be in the power supply. Contact HP for assistance.
Removing the power
LED lights, the power supply
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LED does not light, the
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