HP Z600 HP Z600 Workstation Maintenance and Service Guide - Page 196

LED color definitions, Table 6-9

Page 196 highlights

Table 6-8 Diagnostic lights and audible codes (continued) Activity Possible cause Recommended action 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 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 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 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 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. Remove power supply from system chassis. (See Removing the power supply on page 78 for details.) c. Plug in the AC power. If the power supply fan spins and the BIST** LED lights, the power supply 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** LED does not light, the problem might be in the power supply. Contact HP for assistance. * The BIOS option you select controls the blue LED function during these suspend modes. ** Some workstation models do not have BIST LED functionality. For BIST information, see the Maintenance and Service Guide of the workstation. LED color definitions The following table describes what each LED light on the workstation front panel signifies. Table 6-9 LED color definitions LED state LED color System status Solid Blue System is on. Flashing Blue System is in Standby. Solid or flashing Red System has experienced an error. ( See POST error messages on page 185.) None No light System is in Hibernate, or is off. 184 Chapter 6 Diagnostics and troubleshooting ENWW

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Activity
Possible cause
Recommended action
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
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 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 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 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. Remove power supply from system chassis. (See
Removing the power
supply
on page
78
for details.)
c. Plug in the AC power.
If the power supply fan spins and the BIST
**
LED lights, the power supply
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
**
LED does not light, the
problem might be in the power supply. Contact HP for assistance.
*
The BIOS option you select controls the blue LED function during these suspend modes.
**
Some workstation models do not have BIST LED functionality. For BIST information, see the
Maintenance and Service
Guide
of the workstation.
LED color definitions
The following table describes what each LED light on the workstation front panel signifies.
Table 6-9
LED color definitions
LED state
LED color
System status
Solid
Blue
System is on.
Flashing
Blue
System is in Standby.
Solid or flashing
Red
System has experienced an error. ( See
POST error
messages
on page
185
.)
None
No light
System is in Hibernate, or is off.
Table 6-8
Diagnostic lights and audible codes (continued)
184
Chapter 6
Diagnostics and troubleshooting
ENWW