HP Z4 G4 User Manual

Solving power problems
Common causes and solutions for power problems are listed in the following table.
Power supply shuts down intermittently.
Cause Solution
Power supply will not turn on because of internal power supply
fault.
Verify the power supply functionality.
1. Disconnect the power cord from the computer.
2. Disconnect all power supply cables from the system board.
3. Reconnect the power cord to the power supply.
–
If the power supply fan is spinning AND the BIST light
illuminates, the power supply is good. Consider
replacing the system board.
–
If the power supply fan is not spinning OR the BIST
light does not illuminate, replace the power supply.
Power LED ashes red four times, once every second, followed by a two second pause, and the computer beeps four times. (Beeps
stop after fth iteration but LEDs continue ashing.) Computer powered o automatically and the Power LED ashes red three
times and then white two times.
Cause Solution
Power failure (power supply is overloaded). 1. Open the access panel and ensure that all power supply
cables are seated correctly on the system board.
2. Check if a device is causing the problem by removing ALL
attached devices (such as hard drives or optical drives).
Power on the system. If the system enters POST, then power
o and replace one device at a time and repeat this
procedure until failure occurs. Replace the device that is
causing the failure. Continue adding devices one at a time to
ensure all devices are functioning properly.
3. Verify the power supply functionality.
a. Disconnect the power cord from the computer.
b. Disconnect all power supply cables from the system
board.
c. Reconnect the power cord to the power supply.
○
If the power supply fan is spinning AND the BIST
light illuminates, the power supply is good.
Consider replacing the system board.
○
If the power supply fan is not spinning OR the
BIST light does not illuminate, replace the power
supply.
44 Chapter 6 Troubleshooting without diagnostics

HP Z4 G4 Specifications

General

Tcase	65 °C
Bus type	QPI
Stepping	U0
Processor cache	8.25 MB
Processor cores	6
Processor model	W-2133
System bus rate	0 GT/s
Processor socket	LGA 2066 (Socket R4)
Processor threads	12
Processor codename	Skylake
Processor frequency	3.6 GHz
Processor lithography	14 nm
Processor manufacturer	Intel
PCI Express slots version	3.0
Processor boost frequency	3.9 GHz
Processor operating modes	64-bit
ECC supported by processor	Yes
PCI Express configurations	1x16, 1x4, 1x8
Thermal Design Power (TDP)	140 W
Number of processors installed	1
Maximum number of PCI Express lanes	48
Memory types supported by processor	DDR4-SDRAM
Memory clock speeds supported by processor	1600, 1866, 2133, 2400, 2666 MHz
Memory bandwidth supported by processor (max)	85.3 GB/s
Maximum internal memory supported by processor	512 GB
Operating system installed	Windows 10 Pro for Workstations
Memory slots	8x DIMM
Internal memory	16 GB
Memory channels	Quad-channel
Memory clock speed	2666 MHz
Maximum internal memory	256 GB
Memory layout (slots x size)	2 x 8 GB
HDD speed	7200 RPM
RAID levels	0, 1, 5, 10
HDD capacity	1000 GB
SSD capacity	The Solid State Drive's storage capacity in Gigabytes.
HDD interface	SATA
SSD interface	PCI Express
Storage media	HDD+SSD
Optical drive type	DVD-RW
Card reader integrated	No
Total storage capacity	1256 GB
Discrete graphics card model	Not available
Power supply	1000 W
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	10
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity	0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity	2
Sustainability certificates	ENERGY STAR
Chassis type	Tower
Product color	Black
Country of origin	China
Intel® vPro™ Platform Eligibility	-
Audio chip	Realtek HD ALC221
Product type	Workstation
Motherboard chipset	Intel® C422
Scalability	1S
Processor code	SR3LL
Processor ARK ID	125040
Processor package size	45 x 52.5 mm
Supported instruction sets	AVX, AVX 2.0, AVX-512, SSE4.2
Intel Identity Protection Technology version	1.00

Weight and Dimensions

Depth	445 mm
Width	169 mm
Height	386 mm
Weight	10200 g