HP Book 900 manual Removing the Display Assembly

Page 36

Caution: OmniBook 900B

Follow these precautions while installing the CPU module to prevent damage to the CPU connector:

Place the CPU module on the connector carefully. Align the arrow on the upper right corner of the CPU module with the matching arrow on the connector.

Use only a 4.0-4.5 mm flat-blade screwdriver to lock the CPU module.

Use only enough force to lock the CPU module. The CPU connector may be damaged if too much force is used.

Install or replace thermal pads on the heatsink that are missing or damaged.

Removing the Display Assembly

(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 the keyboard (page 2-12).

3.Open the display fully and remove the covers from the display hinges. Push in at the bottom-front of the covers.

4.Unplug the display power wires from the motherboard near the right hinge. Free the wires from the notch in the top case.

5.Remove the two screws from the end of the LCD flex cable and unplug the cable from the motherboard.

6.Close the display and turn over the computer.

7.Remove the two screws from the back corners of the bottom case.

8.Open the display about 90°, then lift if off.

2-16 Removal and Replacement

HP OmniBook 900

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Contents HP OmniBook Edition History Contents Figures TablesHP OmniBook Introduction Sources of OmniBook InformationSource Address or NumberOmniBook 900 Models Product Comparisons Processor OmniBookMemory Display Features and Operation OmniBook Front ViewActivating Power Modes Turning the OmniBook On and OffChecking the Status of the OmniBook Main Status Lights MotherboardKeyboard Status Lights Motherboard 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 900 SpecificationsOnline Reference Guide 12. OmniBook 900 Accessories Accessory Description OmniBook Compatibility Docks900B 900† 4150 2100/7100 Replaceable Module Diagram Internal Design13. Functional Structure Docking portRemoval and Replacement Removal Cross-ReferenceRequired Equipment Recommended Screw TorquesScrew Thread Size M1.4 Torque kgfcm Torque lbfinRemoving the Battery Removal ProcedureReassembly Notes Installing a Battery PanelRAM Board Replacement Part Numbers Removing a RAM BoardPart Number Exchange Part NumberHard Disk Drive Replacement Part Numbers Removing the Hard Disk DriveExchange Information Removing the Hard Disk Drive Creating a Hibernate Partition Replacement Procedure Replacing Small PartsReplacing Small Parts User-Replaceable 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 Cable, display power Case, display Hinge Latch, display LCD module Removal ProceduresRemoving Display Components 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 ToolsTroubleshooting Suggestions SymptomStartup Power/Battery Call Center SuggestionsRepair Center Likely Causes Repair Center CommentsWhite display Erratic display Symptom Keyboard Pointing stick Call Center SuggestionsSerial/Parallel AC adapter MiscellaneousAccessories Diagnostic Tools OmniBook Diagnostic ProgramCreating a Diagnostic Floppy Disk Running the Diagnostic Test Serial number Audio deviceOmniBook Diagnostic Error Codes Code Suggestions System TestsHard Disk Tests Video Tests Acpi Tests Power-On Self-Test Post Terminal-Error Beep CodesPost Messages System battery is dead Replace and run Setup Message DescriptionEntering Setup Sycard PCCtest 450 CardBus Card Optional Lower slot PCT450 -b69 -0Installing the DMI Package Uninstalling the DMI PackageUsing the DMI Interface Desktop Management Interface DMIContents of the DMI Package Bios Setup Utility Running the Bios Setup UtilityBios Setup Menus and Parameters Main Menu DefaultSystem Devices Menu Default Security Menu DefaultPower Menu Boot Menu DefaultOB 900B On OB 900† Off 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 Part Number Reference Part Number ExchangeDescription User OmniBook Repl 900B 900† 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 OmniBookOmniBook 900 LCD Guidelines TFT Type of ImperfectionElectrical Imperfections Mechanical ImperfectionsReference Information HP OmniBook Obsolete Repair Parts Obsolete PartsObsolete New Description Part Number Page Page Part Number F1770-90001