HP Book 900 manual Removing the Top Case

Page 38

Removing the Top Case

(HP Authorized Service Providers Only)

Required Equipment

Small Phillips screwdriver.

Removal Procedure

1.Unplug the ac adapter, if present, and remove the battery.

2.Remove these additional assemblies:

Hard disk drive (page 2-6)

Keyboard (page 2-12).

Display assembly (page 2-16).

3.Remove the eight screws (OmniBook 900†) or six screws and two springs (OmniBook 900B) from the heatsink and lift off the heatsink.

Caution

Do not spin the fan blade with your finger. Pressure on the fan blade can damage the bearings.

4.Unplug the microphone cable from the motherboard near the back.

5.Unplug the touch pad flex cable from the motherboard near the front.

6.On the bottom of the unit, remove the five screws (12-inch display) or six screws (13-inch display) from the front half of the case.

7.On the top of the unit, remove the three screws along the back of the top case.

8.Remove the six screws (12-inch display) or five screws (13-inch display) holding the top case to the motherboard and bottom case.

9.Near the docking connector, press down on the inner edge of the top case and lift the back edge until two snaps release in that area.

10.Near the right hinge area, push the top case toward the rear and lift the back edge until the top case releases from the right hinge support.

11.Hold the front of the bottom case with your thumbs. Lift the back of the top case about 5 mm

(2 inches), then pull it forward with your fingers. Pull and work the top case until the middle snap releases.

The left hinge support comes off with the top case. The right hinge support stays in the bottom case.

2-18 Removal and Replacement

HP OmniBook 900

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Contents HP OmniBook Edition History Contents Figures TablesHP OmniBook Source IntroductionSources of OmniBook Information Address or NumberOmniBook 900 Models Memory Display Product ComparisonsProcessor OmniBook Features and Operation OmniBook Front ViewActivating Power Modes Turning the OmniBook On and OffKeyboard Status Lights Motherboard Checking the Status of the OmniBookMain Status Lights Motherboard Fn Hot Keys Using Fn Hot KeysResetting the OmniBook Hot KeySystem Memory System ResourcesSystem Interrupts System Input/Output Addresses 100-3FF 10. DMA ChannelsSpecifications 11. OmniBook 900 SpecificationsOnline Reference Guide 12. OmniBook 900 Accessories 900B 900† 4150 2100/7100 Accessory Description OmniBook CompatibilityDocks Replaceable Module Diagram Internal Design13. Functional Structure Docking portRemoval and Replacement Removal Cross-ReferenceScrew Thread Size M1.4 Required EquipmentRecommended Screw Torques Torque kgfcm Torque lbfinRemoving the Battery Removal ProcedureReassembly Notes Installing a Battery PanelPart Number RAM Board Replacement Part NumbersRemoving a RAM Board Exchange Part NumberExchange Information Hard Disk Drive Replacement Part NumbersRemoving the Hard Disk Drive Removing the Hard Disk Drive Creating a Hibernate Partition Replacing Small Parts User-Replaceable Replacement ProcedureReplacing Small Parts Cover, keyboard screw Door, hard disk FootRemoving the LCD Module Display Component CompatibilityRemoving 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 Removing the Bios IC 13. Example of Serial Number Label14. Removing the Bios IC Reassembly Notes Removing Other Components Removing Display Components Cable, display power Case, displayHinge Latch, display LCD module Removal Procedures Component Bezel, display Cable, display flexRemoving Top Case Components 10. Removing Bottom Case ComponentsSupport, hinge left Removal Procedures Component HeatsinkComponent Support, hinge right Removal Procedures Troubleshooting and Diagnostics Troubleshooting Troubleshooting the ProblemVerifying the Repair Suggestions for Troubleshooting Scope of Diagnostic ToolsStartup Troubleshooting SuggestionsSymptom Repair Center Likely Causes Power/BatteryCall Center Suggestions Repair Center CommentsWhite display Erratic display Symptom Keyboard Pointing stick Call Center SuggestionsSerial/Parallel AC adapter MiscellaneousAccessories Creating a Diagnostic Floppy Disk Diagnostic ToolsOmniBook Diagnostic Program Running the Diagnostic Test Serial number Audio deviceOmniBook Diagnostic Error Codes Code Suggestions System TestsHard Disk Tests Video Tests Acpi Tests Post Messages Power-On Self-TestPost Terminal-Error Beep Codes System battery is dead Replace and run Setup Message DescriptionEntering Setup Sycard PCCtest 450 CardBus Card Optional Lower slot PCT450 -b69 -0Using the DMI Interface Installing the DMI PackageUninstalling the DMI Package Desktop Management Interface DMIContents of the DMI Package Bios Setup Menus and Parameters Bios Setup UtilityRunning the Bios Setup Utility Main Menu DefaultSystem Devices Menu Default Security Menu DefaultOB 900B On OB 900† Off Power MenuBoot Menu Default Exit MenuReplaceable Parts Exploded View OmniBook Replaceable Parts IC, Bios Exchange User Part Number ReplExchange Part Number User Repl OmniBook 900B 900† Display Components Assembly-Component Breakdown Accessory Replaceable PartsReplaceable Parts HP OmniBook Description User OmniBook Repl 900B 900† Part Number ReferencePart Number Exchange Yes HP OmniBook Replaceable Parts Replaceable Parts HP OmniBook Part Number Exchange Description User OmniBook Repl B 900†Page Password Removal Policy Reference InformationHewlett-Packard Display Quality Statement Reference Information HP OmniBookElectrical Imperfections OmniBook 900 LCD Guidelines TFTType of Imperfection Mechanical ImperfectionsReference Information HP OmniBook Obsolete New Description Part Number Obsolete Repair PartsObsolete Parts Page Page Part Number F1770-90001