HP 4100 manual Symptom AC adapter, Miscellaneous, Accessories

Page 56

Symptom

AC adapter

Does not power the OmniBook

Miscellaneous

Clock loses time

Computer gets hot

Computer pauses or runs sluggishly

Accessories

Docking product I/O problems

Call Center:

Suggestions

Try another ac adapter, if available.

Plug in ac adapter for 24 hours to charge backup battery.

It is normal for the computer to get hot.

Make sure the air vents are clear.

DOS games and other programs that drive CPU usage toward 100% can contribute.

May be normal Windows behavior (background processing can affect response time).

If the hard disk has spun down to conserve power, it can take several seconds to spin up. You can hear this. You can run BIOS Setup and change the hard disk time- out to match the Suspend time-out.

Certain background operations (such as HP COE virus scans) can affect performance while they’re running.

Some file browsers may be unresponsive while they’re processing a graphic image or waiting for broken network connections to time out.

Run BIOS Setup and try turning off smart CPU mode.

Check that ac power is connected.

Check settings in BIOS Setup.

Try using the corresponding OmniBook port.

Repair Center:

Likely Causes

AC adapter.

DC-DC PCA.

Motherboard.

Motherboard.

Fan.

Thermal connections. Heatsink damage.

CPU module.

Motherboard.

Docking product. Motherboard.

Repair Center:

Comments

The ac adapter is not repairable—it must be replaced.

Charge backup battery.

Check the fan.

Check for proper contact between CPU and its top plate, and between heatpipe and heatsink.

If computer slows after a period of continuous activity, check thermal connections and parts.

Test the corresponding OmniBook ports while undocked.

The port replicator and mini dock are not repairable—they must be exchanged.

The docking system is repairable—see its service manual.

Can not boot from

Check that the CD is

CD-ROM drive.

CD in CD-ROM

bootable.

 

drive

Check ESC key timing during

 

 

boot, or check boot order in

 

 

BIOS Setup.

 

The CD-ROM drive is not repairable—it must be exchanged.

3-10 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 OffKeyboard Status Lights VGA PCA Checking the Status of the OmniBookMain Status Lights LED Strip Cable Using Fn Hot Keys Resetting the OmniBookFn Hot Keys Hot KeySystem Memory System ResourcesSystem Interrupts System Input/Output Addresses 100-3FF 10. DMA ChannelsSpecifications 11. OmniBook 4100 SpecificationsProduct Information HP OmniBook OmniBook 7100, 4100, 3100, 2100 Accessories 12. OmniBook 4100 AccessoriesOmniBook 4100-Only 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 NumberDescription Part Number Exchange Part Number Hard Disk Drive Replacement Part NumbersRemoving the Hard Disk Drive Installing a Hard Drive in the Cover Reassembly Notes Creating a Hibernate PartitionReplacing Small Parts User-Replaceable Replacement ProcedureReplacing Small Parts 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 ToolsStartup Troubleshooting SuggestionsSymptom Power/Battery Call Center SuggestionsRepair Center Likely Causes Repair Center CommentsErratic display Pointing stick Touch pad Call Center SuggestionsSerial/Parallel Miscellaneous Symptom AC adapterAccessories Check module contacts. Push system-off button Creating a Diagnostic Floppy Disk Diagnostic ToolsOmniBook Diagnostic Program 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 DescriptionDescription Post MessagesMessage 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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