HP Book 900 manual Serial/Parallel, Infrared

Page 59

Symptom

Audio

Call Center:

Repair Center:

Suggestions

Likely Causes

Repair Center: Comments

Sound does not play

Sound does not record

Serial/Parallel

General problems

Infrared

General problems

USB

Check settings in BIOS Setup.

Increase sound volume (Fn+UP and software controls).

Check whether mute is active (Fn+F7 and software controls).

Check for sound resource conflicts in Device Manager (Windows 95/98) or Administrative Tools or Control Panel System (Windows NT).

Check settings in BIOS Setup.

Check software controls for microphone—it should not be muted in recording panel.

Note: The microphone should normally be muted in the master output panel.

Check settings in BIOS Setup.

Check settings in Control Panel (and in Windows NT Diagnostics).

Infrared communication is not supported in Windows NT 4.0.

Infrared is disabled when shipped. Drivers are included but not installed when shipped.

Check settings in BIOS Setup.

Standard IrDA and fast-IrDA are incompatible (they use different drivers).

For fast-IrDA, check for DMA conflict with ECP parallel port.

Speaker.

Motherboard.

Top case (microphone).

Motherboard.

Motherboard.

Motherboard.

Check operation using headphones or external speakers.

Check operation using external microphone.

Use loopback connector during test—see page 3-14.

General problems

USB is not supported in

Motherboard.

Windows NT 4.0.

 

HP OmniBook 900

Troubleshooting and Diagnostics

3-9

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Contents HP OmniBook Edition History Contents Tables FiguresHP OmniBook Address or Number IntroductionSources of OmniBook Information SourceOmniBook 900 Models Memory Display Product ComparisonsProcessor OmniBook OmniBook Front View Features and OperationTurning the OmniBook On and Off Activating Power ModesKeyboard Status Lights Motherboard Checking the Status of the OmniBookMain Status Lights Motherboard Hot Key Using Fn Hot KeysResetting the OmniBook Fn Hot KeysSystem Memory System ResourcesSystem Interrupts 10. DMA Channels System Input/Output Addresses 100-3FF11. OmniBook 900 Specifications SpecificationsOnline Reference Guide 12. OmniBook 900 Accessories 900B 900† 4150 2100/7100 Accessory Description OmniBook CompatibilityDocks Internal Design Replaceable Module DiagramDocking port 13. Functional StructureRemoval Cross-Reference Removal and ReplacementTorque kgfcm Torque lbfin Required EquipmentRecommended Screw Torques Screw Thread Size M1.4Removal Procedure Removing the BatteryInstalling a Battery Panel Reassembly NotesExchange Part Number RAM Board Replacement Part NumbersRemoving a RAM Board Part NumberExchange Information Hard Disk Drive Replacement Part NumbersRemoving the Hard Disk Drive Removing the Hard Disk Drive Creating a Hibernate Partition Cover, keyboard screw Door, hard disk Foot Replacement ProcedureReplacing Small Parts Replacing Small Parts User-ReplaceableDisplay Component Compatibility Removing the LCD ModuleRemoving the LCD Module Removing the Keyboard Removing the Keyboard Reassembly Notes Removing the CPU Module Removing the CPU Module Reassembly Notes Removing the Display Assembly Removing the Display Assembly Reassembly Notes Removing the Top Case 10. Removing the Top Case Reassembly Notes Removing the Motherboard or Bottom Case 11. Removing the Motherboard Reassembly Notes Installing a New Serial Number Label 13. Example of Serial Number Label Removing the Bios IC14. Removing the Bios IC Reassembly Notes Removing Other Components Component Bezel, display Cable, display flex Cable, display power Case, displayHinge Latch, display LCD module Removal Procedures Removing Display Components10. Removing Bottom Case Components Removing Top Case ComponentsComponent Heatsink Support, hinge left Removal ProceduresComponent Support, hinge right Removal Procedures Troubleshooting and Diagnostics Troubleshooting the Problem TroubleshootingVerifying the Repair Scope of Diagnostic Tools Suggestions for TroubleshootingStartup Troubleshooting SuggestionsSymptom Repair Center Comments Power/BatteryCall Center Suggestions Repair Center Likely CausesWhite display Erratic display Pointing stick Call Center Suggestions Symptom KeyboardSerial/Parallel Miscellaneous AC adapterAccessories Creating a Diagnostic Floppy Disk Diagnostic ToolsOmniBook Diagnostic Program Serial number Audio device Running the Diagnostic TestCode Suggestions System Tests OmniBook Diagnostic Error CodesHard Disk Tests Video Tests Acpi Tests Post Messages Power-On Self-TestPost Terminal-Error Beep Codes Message Description System battery is dead Replace and run SetupEntering Setup Lower slot PCT450 -b69 -0 Sycard PCCtest 450 CardBus Card OptionalDesktop Management Interface DMI Installing the DMI PackageUninstalling the DMI Package Using the DMI InterfaceContents of the DMI Package Main Menu Default Bios Setup UtilityRunning the Bios Setup Utility Bios Setup Menus and ParametersSecurity Menu Default System Devices Menu DefaultExit Menu Power MenuBoot Menu Default OB 900B On OB 900† OffReplaceable Parts Exploded View OmniBook Replaceable Parts Exchange User Part Number Repl IC, BiosExchange Part Number User Repl OmniBook 900B 900† Display Components Accessory Replaceable Parts Assembly-Component BreakdownReplaceable Parts HP OmniBook Description User OmniBook Repl 900B 900† Part Number ReferencePart Number Exchange Yes HP OmniBook Replaceable Parts Replaceable Parts HP OmniBook Repl B 900† Part Number Exchange Description User OmniBookPage Reference Information Password Removal PolicyReference Information HP OmniBook Hewlett-Packard Display Quality StatementMechanical Imperfections OmniBook 900 LCD Guidelines TFTType of Imperfection Electrical ImperfectionsReference Information HP OmniBook Obsolete New Description Part Number Obsolete Repair PartsObsolete Parts Page Page Part Number F1770-90001