HP ProSignia 120 Maintenance And Service Manual page 3

chapter 2
T
ROUBLESHOOTING
2.1 Preliminary Steps .........................................................................................................................2-2
2.2 Clearing Passwords ......................................................................................................................2-3
2.3 Power-On Self-Test (POST) ........................................................................................................2-3
2.4 POST Error Messages..................................................................................................................2-4
2.5 Compaq Utilities ..........................................................................................................................2-7
2.5.1 Computer Setup .....................................................................................................................2-7
2.5.2 Computer Checkup (TEST) ...................................................................................................2-9
2.5.3 Running View System Information (INSPECT) .................................................................2-14
2.5.4 Running Compaq Diagnostics .............................................................................................2-15
2.5.5 Boot Sequencing ..................................................................................................................2-15
2.5.6 Factory Default Settings ......................................................................................................2-16
2.6 Troubleshooting Without Diagnostics .......................................................................................2-17
2.6.1 Before Replacing Parts ........................................................................................................2-17
2.6.2 Checklist for Solving Problems ...........................................................................................2-17
chapter 3
I P
LLUSTRATED
3.1 System Unit..................................................................................................................................3-2
3.2 Mass Storage Devices ..................................................................................................................3-4
3.3 Cables and Power Cords ..............................................................................................................3-6
3.4 Standard and Optional Boards .....................................................................................................3-7
3.5 Options .........................................................................................................................................3-9
3.6 Miscellaneous Parts ...................................................................................................................3-10
3.7 Documentation...........................................................................................................................3-11
chapter 4
R
EMOVAL AND
4.1 Tools Required.............................................................................................................................4-1
4.2 Service Considerations.................................................................................................................4-1
4.2.1 Plastic Parts............................................................................................................................4-1
4.2.2 Cables and Connectors...........................................................................................................4-2
4.3 Preventing Damage to Removable Drives...................................................................................4-2
4.4 Preventing Electrostatic Damage.................................................................................................4-3
4.4.1 Packaging and Transporting Precautions...............................................................................4-3
4.4.2 Workstation Precautions........................................................................................................4-4
4.4.3 Grounding Equipment and Methods......................................................................................4-4
4.4.4 Electrostatic Voltage Levels and Protective Materials..........................................................4-5
iv Contents
C
ARTS ATALOG
R P
EPLACEMENT RELIMINARIES