HP 4100 manual Troubleshooting the Problem

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Troubleshooting

The suggestions in this section can help isolate and repair the cause of a problem. To ensure quality repair, HP recommends that you follow the basic troubleshooting steps shown in the illustration below.

Check the customer's description of the problem and any supporting information.

Try to duplicate the customer's problem.

Troubleshoot the problem using

-Diagnostic tools.

-Troubleshooting suggestions.

Verify the repair by testing the functionality of the complete unit .

Figure 3-1. Basic Troubleshooting Steps

Troubleshooting the Problem

Record pertinent information about the unit:

Model and serial number.

Operating system and version.

®BIOS version.

Accessories and peripherals used.

Analyze the problem:

Observe Symptoms. Using the customer’s information, try to duplicate the problem. Determine how the problem differs from proper behavior. Also, take note of the functions that do work properly.

3-2

Troubleshooting and Diagnostics

HP OmniBook 4100

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Contents HP OmniBook Edition History Contents Figures TablesHP OmniBook Introduction Sources of OmniBook InformationSource Address or NumberProduct Information OmniBook 4100 ModelsFeatures and Operation OmniBook Front ViewPower Management Power States Product ComparisonsOmniBook OmniBook 2100/3100 Processor Memory Video Operating SystemActivating Power Modes Turning the OmniBook On and OffChecking the Status of the OmniBook Main Status Lights LED Strip CableKeyboard Status Lights VGA PCA Using Fn Hot Keys Resetting the OmniBookFn Hot Keys Hot KeySystem Resources System InterruptsSystem Memory System Input/Output Addresses 100-3FF 10. DMA ChannelsSpecifications 11. OmniBook 4100 SpecificationsProduct Information HP OmniBook 12. OmniBook 4100 Accessories OmniBook 4100-Only AccessoriesOmniBook 7100, 4100, 3100, 2100 Accessories Replaceable Module Diagram Internal Design13. Functional Structure Docking portPage Removal and Replacement Removal Cross-ReferenceRequired Equipment Recommended Screw TorquesScrew Thread Size Torque kgfcm Torque inlbfRemoving the Battery or Plug-In Module Removal ProcedureRAM Board Replacement Part Numbers Removing a RAM BoardDescription Part Number Exchange Part NumberHard Disk Drive Replacement Part Numbers Removing the Hard Disk DriveDescription Part Number Exchange Part Number Installing a Hard Drive in the Cover Reassembly Notes Creating a Hibernate PartitionReplacement Procedure Replacing Small PartsReplacing Small Parts User-Replaceable Removing the Keyboard Removing the KeyboardHint Removing the Display Assembly Removing the DisplayRemoving the LCD Module Display Component CompatibilityRemoval and Replacement HP OmniBook Removing the Display Reassembly Notes Removing the Top Case Removing the Top Case Reassembly Notes Removing the Motherboard or Bottom Case Removing the Motherboard Reassembly Notes 10. Installing Docking Doors and Module Latch Installing a New Serial Number LabelRemoving the Bios IC 12. Removing the Bios ICDisplay Bezel Display Case Removal Procedures Removing Other ComponentsRemoving Display Components Component Cable HolderComponent Display Latch Removing Top Case Components 10. Removing Bottom Case ComponentsFan Removal Procedures Component CPU Bottom Plate CPU Module MMO CPU Top PlateComponent Frame, Left Frame, Left or Right Heatsink Parts IR PCA Lvds PCAComponent Speaker, Left Speaker, Right Speaker Cover VGA PCATroubleshooting and Diagnostics Troubleshooting Troubleshooting the ProblemVerifying the Repair Suggestions for Troubleshooting Scope of Diagnostic ToolsTroubleshooting Suggestions SymptomStartup Power/Battery Call Center SuggestionsRepair Center Likely Causes Repair Center CommentsErratic display Pointing stick Touch pad Call Center SuggestionsSerial/Parallel Symptom AC adapter AccessoriesMiscellaneous Check module contacts. Push system-off button Diagnostic Tools OmniBook Diagnostic ProgramCreating a Diagnostic Floppy Disk Running the Diagnostic Test EnterOmniBook Diagnostic Error Codes Code Suggestions System TestsHard Disk Tests Parallel Port Tests Power-On Self-Test Post Terminal-Error Beep CodesBeep Codes Post DescriptionPost Messages MessageDescription Allocation Error for device Message DescriptionSycard PCCtest 450 CardBus Card Optional Installing the DMI Package Uninstalling the DMI PackageUsing the DMI Interface Desktop Management Interface DMIContents of the DMI Package DMI ComponentsBios Setup Utility Running the Bios Setup UtilityBios Setup Menus and Parameters Main Menu DefaultSecurity Menu Default Power Menu DefaultBoot Menu Default Exit MenuPage Replaceable Parts Exploded View OmniBook Replaceable Parts User- Replaceable41 PCA, DC-DC Display Components Motherboard Components Assembly-Component Breakdown Accessory Replaceable PartsPart Number Reference PCA, VGA PCA, IR PCA, DC-DCPart Number Exchange Part Number F1460-69098 Password Removal Policy Reference InformationHewlett-Packard Display Quality Statement Reference Information HP OmniBookOmniBook 4100 LCD Guidelines TFT Page Page Part Number F1460-90020
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