HP 500 manual Troubleshooting Suggestions, Startup

Page 68

If you cannot isolate the cause of a problem using the above diagnostic tools, use the suggestions in the following table to help find the problem.

Table 3-2. Troubleshooting Suggestions

Symptom

Call Center:

Repair Center:

Repair Center:

 

Suggestions

Likely Causes

Comments

 

 

 

 

To help determine likely causes, find out which replaceable components are involved in the system involved, and what roles they play. See Figure 1-11 on page 1-19 and Table 1-9 on page 1-20.

Startup

Does not boot on

Check the power source.

AC adapter.

Check the AC adapter.

AC or battery.

Press the system-off switch

SDRAM module.

Remove any SDRAM

 

to reset the computer.

Motherboard.

expansion module and try

 

Unplug the AC adapter and

Display assembly.

again.

 

remove all batteries, then

Hard drive.

Replace the system SDRAM

 

reconnect power.

module.

 

 

 

Remove any SDRAM

 

If the power mode light does

 

expansion module and try

 

not turn on, reprogram the

 

again.

 

BIOS; replace the

 

 

 

motherboard.

 

 

 

If the power mode light turns

 

 

 

on but the display does not,

 

 

 

try an external monitor. If the

 

 

 

monitor shows a successful

 

 

 

boot, replace the display

 

 

 

assembly. If the monitor

 

 

 

shows activity but the BIOS

 

 

 

does not complete, replace

 

 

 

the display assembly. If the

 

 

 

monitor is blank, replace the

 

 

 

motherboard.

 

 

 

If the power mode light and

 

 

 

display turn on and the BIOS

 

 

 

completes, but the OS will

 

 

 

not start from the hard disk or

 

 

 

from a floppy drive, replace

 

 

 

the motherboard. If the OS

 

 

 

starts only from a floppy

 

 

 

drive, reinstall the factory

 

 

 

software onto the hard drive;

 

 

 

replace the hard drive.

Beeps once, spins

 

SDRAM module.

Make sure at least one

hard disk, repeats,

 

 

SDRAM module is installed.

but does not boot.

 

 

 

Does not boot on

Check the battery level using

Battery or contacts.

 

main battery, but

the battery LEDs.

Motherboard.

 

boots on AC.

Check battery contacts. If

 

 

 

available, try another battery.

 

 

3-6

Troubleshooting and Diagnostics

HP Omnibook 500

Image 68
Contents HP Omnibook Edition History HP OmnibookContents Figures Tables Introduction Source Address or Number CommentsProduct Information Omnibook 500 Series ModelsProduct Comparisons Features Omnibook Front ViewOmnibook Back View Expansion Base Front View Expansion Base Back View Turning the Computer On and Off Activating Power ModesOperation Battery Status Checking the Status of the ComputerMain Status Lights front of computer Keyboard Status LightsHot Key Effect Using Fn Hot KeysFn Hot Keys Resetting the Omnibook Resetting the Computer Resetting an Expansion BaseDocking and Undocking the Computer Docking the ComputerUndocking the Computer Manually Undocking the ComputerConnecting a Floppy Disk Drive 10. Connecting a Floppy Disk DriveSpecifications Omnibook 500 Series SpecificationsWireless LAN Audio System ComputerKeyboard Pointing DeviceMajor ICs Computer Security FeaturesEnvironmental Limits Omnibook 500 Series Accessories Accessory Description Omnibook Compat 500 6000 900B PC Cards11. Replaceable Component Diagram Internal DesignFunction Components Used Component Roles Bootup Functional StructureRemoval and Replacement Removal Cross-ReferenceDisassembly Flowchart Wireless models onlyScrew Thread Size Torque cm-kgf Torque in-lbf Required EquipmentRecommended Screw Torques Removing the Main Battery Removal ProcedureRemoving a Plug-In Module Releasing the ModuleDescription Part Number Exchange Part Number Hard Disk Drive Replacement Part NumbersRemoving the Hard Disk Drive Removing the Hard Disk Tray Reassembly Notes Creating a Utility Partition Removing the Power Button Panel Removing the Power Button Panel Reassembly NotesRemoving the Keyboard Removing the Keyboard ScrewsReassembly Notes Removing a System Sdram Module Sdram Module Replacement Part NumbersRemoving an Sdram Module 10. Removing an Sdram Expansion Module Reassembly Note Removing an Expansion Sdram ModuleRemoving a Mini-PCI Card certain models only 12. Routing the Mini-PCI Cables LAN/modem card shown Removing the Switchboard PCA Replacing Small Parts Replacing Small Parts User-ReplaceableRemoving the Display Assembly HP Authorized Service Providers Only14. Removing the Display Reassembly Notes Page Removing the Heatsink/Fan 16. Removing the Heatsink/Fan17. Separating the Heatsink and Fan Reassembly Note Removing the Top Case 18. Removing the Top Case Removing the Motherboard or Bottom Case 19. Removing the Motherboard Reassembly Notes Replacing the Motherboard 20. Removing Motherboard ComponentsReassembly Note Replacing the Bottom Case 21. Removing Bottom Case Components Installation Procedure 22. Replacing the Docking Doors 23. Example of Serial Number LabelRepairing the Bios IC 24. Boot-Block Jumper Removing Omnibook Components Removing Omnibook ComponentsComponent Removal Procedure Additional Steps Heatsink/fan Reassembly Notes Mini-PCI models only. RoutePanel, audio/PCMCIA Panel, mini-PCIPage Troubleshooting and Diagnostics Troubleshooting Basic Troubleshooting StepsTroubleshooting the Problem Checking for Customer AbuseVerifying the Repair Suggestions for Troubleshooting Scope of Diagnostic ToolsTroubleshooting Suggestions StartupHP Omnibook Troubleshooting and Diagnostics Troubleshooting and Diagnostics HP Omnibook Display Use the Recovery CD to DVD Keyboard and pointing stickClick/scroll button Serial/ParallelLAN/Network Wireless Motherboard MiscellaneousTroubleshooting and Diagnostics HP Omnibook Plug-in Modules Troubleshooting and Diagnostics HP Omnibook Updating e-DiagTools Diagnostic ToolsDiagTools Enter Running e-DiagToolsSerial and Parallel Loopback Connectors E-DiagTools Error Codes Interpreting the ResultsFloppy Disk Tests Smbus Tests 9088h Replace the expansion base Beep Codes Post Description Power-On Self-TestPost Terminal-Error Beep Codes Post Messages Message Description02F7 Fail-Safe Timer NMI Failed Sycard PCCtest Commands Sycard PCCtest 450/460 CardBus Card OptionalPcmcia PC Card 16-bit test CardBus 32-bit test Omnibook 500 PCI1410Installing the DMI Package Using DMI/WMIUninstalling the DMI/WMI Package Desktop and Windows Management Interfaces DMI/WMIBios Setup Utility Running the Bios Setup UtilityBios Setup Menus and Parameters Main Menu DefaultSystem Devices Menu Default Security Menu DefaultExit Menu Power APM Menu DefaultBoot Menu Default Replaceable Parts Omnibook Exploded View Replaceable Parts Description Part Number Exchange User ReplReplaceable Parts HP Omnibook HP Omnibook Replaceable Parts Accessory Replaceable Parts Part Number Reference Part Exchange Description User Number Part Number ReplReplaceable Parts HP Omnibook HP Omnibook Replaceable Parts Clip, wireless cable Password Removal Policy Reference InformationHewlett-Packard Display Quality Statement Omnibook 500 LCD Guidelines 12.1-in TFT, XGA Mechanical ImperfectionsObsolete Parts Obsolete Repair PartsObsolete New Description Service Notes/Comments Part Number Page Part Number F3476-90024
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500 specifications

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