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Solving power supply problems
This section presents power supply troubleshooting scenarios.
Testing power supply
Before replacing the power supply, use the Built-In Self-Test (BIST) feature to learn if the power supply
still works.
To test the power supply:
1. Unplug the AC power.
2. Remove the power supply.
3. Plug in AC power and verify the following:
●
If the green BIST LED on the rear of the workstation is illuminated and the fan is spinning, the
power supply is functional.
●
If the green BIST LED is not illuminated or the fan is not spinning, replace the power supply.
See the Rear panel components section of this service guide to locate the BIST LED on this workstation.
Table 6-2 Power supply problems
Problem Cause Solution
Power supply shuts down
intermittently.
Power supply fault. Replace the power supply.
Workstation powers off and the
Power LED flashes red 2 times
(once every second), followed by a
2-second pause.
Processor thermal protection
is activated.
A fan might be blocked or not
turning.
OR
The processor heatsink fan
assembly is not properly
attached to the processor.
1. Ensure that the workstation air vents are not blocked.
2. Open the access panel and press the workstation
power button.
3. Verify that the system fan is running.
4. Verify that the processor heatsink fan spins.
If the heatsink fan is not spinning, verify that the fan
cable is plugged into the system board connector.
Verify that the fan is properly seated.
5. Replace the processor heatsink.
Power LED flashes red (once every
2 seconds).
Power failure (power supply is
overloaded).
1. Determine whether a device is causing the problem
by performing the following:
a. Disconnect AC power.
b. Remove all attached devices.
c. Power on the workstation.
If the system enters the POST, perform the following:
a. Power off the workstation.
b. Replace one device at a time and repeat this
procedure until a failure occurs.
c. Replace the device causing the failure
d. Continue adding devices one at a time to verify
that all devices are functioning.
2. Verify power supply functionality.
ENWW Troubleshooting scenarios and solutions 163
- HP Z600 Workstation 1
- About this guide 3
- Table of contents 5
- 1 Workstation overview 13
- Processor technology 14
- Memory technology 14
- Graphics 15
- Expansion card slots 15
- Addition features 15
- Workstation components 16
- Chassis components 17
- Front panel components 18
- Rear panel components 19
- Specifications 20
- Environmental specifications 21
- Power supply description 21
- Power supply currents 22
- Power supply specifications 23
- Ensuring proper ventilation 24
- Features 25
- ENERGY STAR Qualification 27
- SATA Power Management 28
- EUP compliance mode 28
- Accessibility 28
- Hyper-threading 29
- Intel Turbo Boost Technology 29
- HP Cool Tools 29
- Setting up Novell SLED 33
- Updating the workstation 33
- Determining current BIOS 34
- Upgrading device drivers 35
- Restore methods 36
- Ordering backup software 37
- Restoring Windows Vista 37
- Creating RestorePlus! media 38
- Restoring Novell SLED 40
- ENWW Restoring Novell SLED 29 41
- 4 System management 42
- Workstation management 54
- Installing a remote system 55
- Replicating the setup 56
- HP Client Manager Software 58
- System Software Manager 59
- Proactive Change Notification 59
- Subscriber's Choice 59
- ROM Flash 60
- FailSafe Boot Block ROM 61
- Workstation security 62
- SATA hard disk drive security 63
- Password security 66
- Chassis security 70
- Drive Protection System 72
- ECC fault prediction 72
- Thermal sensors 72
- Dual-state power button 73
- 5 Replacing components 74
- Warnings and cautions 75
- Service considerations 76
- Grounding the work area 78
- Cables and connectors 79
- Customer self-repair 80
- Component locations 82
- Disassembly order 84
- Predisassembly procedures 85
- Cable lock (optional) 86
- Side access panel 87
- Right side panel 90
- Power supply 90
- Installing the power supply 91
- Removing the speaker 91
- Installing the speaker 92
- Power connections 93
- Upper front bezel 95
- Lower front bezel 96
- Item Description 97
- 1 Front audio 97
- 2 Front 1394a 97
- 3 Front USB 97
- Power switch cable assembly 101
- Optical bay filler tray 102
- Removing a filler tray 103
- Installing a filler tray 104
- Optical disk drive 105
- Hard disk drive 114
- System fans 132
- Memory fan 134
- Installing the memory fan 136
- DIMM installation guidelines 137
- Supported DIMM configurations 137
- BIOS errors and warnings 138
- Removing a DIMM 139
- Installing a DIMM 140
- PCIe card 146
- Installing a PCIe card 147
- PCI card 149
- CPU heatsink 152
- Installing the CPU heatsink 153
- Removing a CPU 155
- Installing a CPU 156
- System board 157
- Installing the system board 159
- Removing the battery 161
- Installing the battery 161
- Product recycling 162
- ENWW 151 163
- Calling technical support 164
- Locating ID labels 164
- Locating warranty information 165
- Diagnosis guidelines 166
- Troubleshooting checklist 167
- HP Support Assistant 169
- HP Help and Support Center 169
- E-support 169
- Helpful hints 170
- At startup 171
- During operation 171
- Solving minor problems 173
- Solving power supply problems 175
- Solving diskette problems 176
- Solving hard drive problems 177
- Solving display problems 179
- Solving audio problems 181
- Solving printer problems 182
- Overview 183
- User interface 187
- Test tab 189
- Status tab 191
- History tab 191
- Errors tab 191
- Help tab 192
- Diagnostic codes and errors 193
- LED color definitions 197
- POST error messages 198
- 7 Configuring RAID devices 204
- Configuring SATA RAID devices 205
- Configuring system BIOS 206
- Creating RAID volumes 207
- Configuring SAS RAID devices 208
- SAS RAID 0 configuration 209
- SAS RAID 1 configuration 210
- SAS RAID 1E configuration 211
- Deleting RAID volumes 211
- Resetting the password jumper 214
- A Connector pins 217
- ENWW 207 219
- ENWW 209 221
- ENWW 211 223
- ENWW 213 225
- B System board designators 227
- C Routine Care 229
- Cleaning the monitor 230
- Cleaning the mouse 230
- D Locating HP resources 231
- Product information 232
- Product support 233
- Product documentation 234
- Product diagnostics 235
- Product updates 236
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