HP Z400 User Manual

Table 6-1 Minor problems (continued)
Problem Cause Possible Solution
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.
Diagnose faulty device
To verify the presence of a faulty device, you must disconnect all
devices one at a time, removing the graphics card last:
1. Disconnect AC power to the computer.
2. Disconnect a device (graphics card last).
3. Reconnect AC power
4. Power on the computer.
◦
If the computer powers on successfully, follow the procedures
in this guide to replace the device that you most recently
disconnected.
◦
If the computer cannot power on, then repeat this procedure
to remove another device until you identify the faulty device.
◦
If no faulty device is found, replace the system board.
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.
Diagnose power supply problem
1. Verify that the workstation is plugged into a working AC outlet.
2. Verify that the power button harness is connected to the inline front
panel I/O device assembly connector.
3. Verify power supply functionality:
a. Disconnect the AC power.
b. Remove the internal power supply cables from the system
board. (You do not need to remove the power supply from
the chassis.)
c. Reconnect the AC power.
d. Turn on the computer.
●
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, there may be a problem with the power
supply. See
Testing power supply on page 176 for
more information.
Solving power supply problems
This section presents power supply troubleshooting scenarios.
ENWW
Troubleshooting scenarios and solutions
175

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