HP Z400 User Manual

Table 6-8 Diagnostic lights and audible codes
Activity Possible cause Recommended action
Blue Power LED on. No
beeps.
Workstation on.
N/A
Blue Power LED blinks every
two seconds. No beeps.
Workstation in Sleep mode
(S3-Suspend to RAM). Select
models only.
Blue Power LED is off. No
beeps.
Workstation in Hibernate
mode (S4-Suspend to disk)
or off state (S5).
Blue Power LED blinks three
times*, once per second.
No beeps.
Workstation in Sleep mode
(S3-Suspend to RAM). Select
models only.
Blue Power LED blinks four
times*, once per second.
No beeps.
Workstation in Hibernate
mode (S4-Suspend to disk).
* User-selectable. The BIOS option you select controls the
blue LED function during these suspend modes. See
The
Computer Setup (F10) Utility menu on page 34 for details.
For the following LED activity and beeps, the beeps are heard through the chassis speaker. Blinks and beeps repeat for 5 cycles, after
which, only the blinks continue to repeat.
Red Power LED blinks two
times, once every second,
followed by a two-second
pause. Two beeps.
CPU thermal protection
activated by either of the
following methods:
●
A fan might be blocked
or not turning.
●
The heatsink and fan
assembly is not
properly attached to
the CPU.
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.
1. Ensure that the workstation air vents are not blocked and the
cooling fan is running.
2. Open the access panel, press power button, and verify that the CPU
fan is spinning. If the CPU fan is not spinning, make sure the fan
cable is plugged into the workstation board header. Ensure the fan
is fully and properly seated or installed.
3. If fan is plugged in and seated properly, but is not spinning, the
problem might be in the CPU fan. Contact HP for assistance.
4. Verify that the fan assembly is properly attached. If problems
persist, there might be a problem with the CPU heatsink. Contact
HP for assistance.
Red Power LED blinks three
times, once every second,
followed by a two-second
pause. Three beeps.
CPU not installed (not an
indicator of bad CPU).
1. Verify that the CPU is present.
2. Reseat the CPU.
196 Chapter 6 Diagnostics and troubleshooting ENWW

HP Z400 Specifications

General

Bus type	QPI
Processor cache	4 MB
Processor cores	2
Processor model	W3503
System bus rate	4.8 GT/s
Processor socket	-
Processor frequency	2.4 GHz
Processor cache type	Smart Cache
Processor lithography	45 nm
Processor manufacturer	Intel
PCI Express slots version	2.0
Processor operating modes	64-bit
ECC supported by processor	Yes
Thermal Design Power (TDP)	130 W
Number of processors installed	1
Memory types supported by processor	DDR3-SDRAM
Memory clock speeds supported by processor	800, 1066 MHz
Memory bandwidth supported by processor (max)	25.6 GB/s
Maximum internal memory supported by processor	24 GB
Audio system	Realtek ALC262
Product type	Workstation
Motherboard chipset	Intel® X58 Express
Memory slots	6x DIMM
Internal memory	4 GB
Memory channels	Triple-channel
Memory clock speed	1066 MHz
Memory layout (slots x size)	- GB
Graphics card	Quadro 600
Networking features	Gigabit Ethernet (10/100/1000)
Graphics card family	NVIDIA
HDD speed	- RPM
RAID levels	0, 1, 5, 10
HDD capacity	500 GB
HDD interface	SATA II
Storage media	HDD
Display included	No
USB 2.0 ports quantity	8
Parallel ports quantity	0
Chassis type	Minitower
Country of origin	China
Number of 5.25\" bays	3
Operating system installed	Windows 7 Professional
Operating system architecture	32-bit
Power supply	475 W
Processor ARK ID	40800
Processor package size	42.5 x 45 mm
Supported instruction sets	SSE4.2

Weight and Dimensions

Depth	455.3 mm
Width	167.9 mm
Height	450.2 mm
Weight	13500 g