Compaq 4120T Personal Computer User Manual


 
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vi Contents
1.8.5 System Memory..........................................................................1-19
1.8.6 Cache ..........................................................................................1-19
1.8.7 Local Bus Video .........................................................................1-20
Chapter 2
2.1 Preliminary Steps ................................................................................2-2
2.2 Clearing the Power-On and Setup Passwords.....................................2-3
2.3 Power-On Self Test (POST)................................................................2-4
2.4 POST Error Messages.........................................................................2-4
2.5 Compaq Utilities .................................................................................2-7
2.5.1 Running Computer Setup ............................................................2-7
2.5.2 Running Computer Checkup (TEST) ..........................................2-8
2.5.3 View System Information (INSPECT)......................................2-10
2.6 Diagnostic Error Codes.....................................................................2-11
2.7 Troubleshooting Without Diagnostics ..............................................2-17
2.7.1 Solving Minor Problems............................................................2-17
Chapter 3
Illustrated Parts
3.1 System Unit..........................................................................................3-2
3.2 Mass Storage Devices ..........................................................................3-6
3.3 Cables and Power Cords ......................................................................3-8
3.4 Standard and Optional Boards ...........................................................3-10
3.5 Display Assembly ..............................................................................3-12
3.6 Options...............................................................................................3-14
3.8 Miscellaneous Parts............................................................................3-16
3.8 Shipping Boxes ..................................................................................3-18
3.9 Documentation...................................................................................3-19
Chapter 4
Removal and Replacement Preliminaries
4.1 Electrostatic Discharge ........................................................................4-1
4.1.1 Generating Static ..........................................................................4-1
4.1.2 Preventing Electrostatic Damage to Equipment ...........................4-2
4.1.3 Removing Batteries ......................................................................4-2
4.1.4 Preventing Damage to Drives.......................................................4-3
4.1.5 Grounding Methods......................................................................4-3
4.1.6 Grounding Workstations...............................................................4-4
4.1.7 Grounding Equipment ..................................................................4-4
4.1.8 Recommended Materials and Equipment.....................................4-5
4.2 Service Considerations.........................................................................4-6
4.2.1 Tool Requirements........................................................................4-6
4.2.2 Cables and Connectors .................................................................4-6
4.3 Serial Number ......................................................................................4-6