HP Book 900 manual Removing a RAM Board, RAM Board Replacement Part Numbers, Exchange Part Number

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Removing a RAM Board

(User-Replaceable)

Table 2-4. RAM Board Replacement Part Numbers

Description

RAM board, 32MB PC100 SODIMM

RAM board, 64MB PC100 SODIMM

RAM board, 128MB PC100 SODIMM

Part Number

1818-7950

1818-7951

1818-7952

Exchange

Part Number

F1660-69103

F1660-69104

OmniBook

900B

900†

Caution

Handle the RAM board only by its edges and provide proper grounding. Otherwise, you may damage the board due to electrostatic discharge.

Required Equipment

Small Phillips screwdriver.

Removal Procedure

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

2.Put your finger above the F8 key and slide the keyboard-screw cover to the left about 3 mm (1/8 inch)—then lift off the cover.

3.Remove the two screws holding the keyboard above the F1 and HOME keys. If your screwdriver has a fat shaft, protect or remove the right hinge cover.

4.Lift up the keyboard tab above the F1 key about 10 mm (1/2 inch), then free the snap at the center of the back edge.

5.Slide the keyboard toward the display about 5 mm (1/4 inch), then fold the keyboard forward onto the front of the top case.

Warning

Do not touch the heatsink until it has cooled. It could be hot if the computer was running recently.

6.Release the two latches at the sides of the RAM board, so the free edge of the board pops up.

7.Pull the board out of the connector.

HP OmniBook 900

Removal and Replacement

2-5

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Contents HP OmniBook Edition History Contents Tables FiguresHP OmniBook Sources of OmniBook Information IntroductionSource Address or NumberOmniBook 900 Models Processor OmniBook Product ComparisonsMemory Display OmniBook Front View Features and OperationTurning the OmniBook On and Off Activating Power ModesMain Status Lights Motherboard Checking the Status of the OmniBookKeyboard Status Lights Motherboard Resetting the OmniBook Using Fn Hot KeysFn Hot Keys Hot KeySystem Interrupts System ResourcesSystem Memory 10. DMA Channels System Input/Output Addresses 100-3FF11. OmniBook 900 Specifications SpecificationsOnline Reference Guide 12. OmniBook 900 Accessories Docks Accessory Description OmniBook Compatibility900B 900† 4150 2100/7100 Internal Design Replaceable Module DiagramDocking port 13. Functional StructureRemoval Cross-Reference Removal and ReplacementRecommended Screw Torques Required EquipmentScrew Thread Size M1.4 Torque kgfcm Torque lbfinRemoval Procedure Removing the BatteryInstalling a Battery Panel Reassembly NotesRemoving a RAM Board RAM Board Replacement Part NumbersPart Number Exchange Part NumberRemoving the Hard Disk Drive Hard Disk Drive Replacement Part NumbersExchange Information Removing the Hard Disk Drive Creating a Hibernate Partition Replacing Small Parts Replacement ProcedureReplacing Small Parts User-Replaceable Cover, keyboard screw Door, hard disk FootDisplay 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 Hinge Latch, display LCD module Removal Procedures Cable, display power Case, displayRemoving Display Components Component Bezel, display Cable, display flex10. 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 TroubleshootingSymptom Troubleshooting SuggestionsStartup Call Center Suggestions Power/BatteryRepair Center Likely Causes Repair Center CommentsWhite display Erratic display Pointing stick Call Center Suggestions Symptom KeyboardSerial/Parallel Miscellaneous AC adapterAccessories OmniBook Diagnostic Program Diagnostic ToolsCreating a Diagnostic Floppy Disk Serial number Audio device Running the Diagnostic TestCode Suggestions System Tests OmniBook Diagnostic Error CodesHard Disk Tests Video Tests Acpi Tests Post Terminal-Error Beep Codes Power-On Self-TestPost Messages Message Description System battery is dead Replace and run SetupEntering Setup Lower slot PCT450 -b69 -0 Sycard PCCtest 450 CardBus Card OptionalUninstalling the DMI Package Installing the DMI PackageUsing the DMI Interface Desktop Management Interface DMIContents of the DMI Package Running the Bios Setup Utility Bios Setup UtilityBios Setup Menus and Parameters Main Menu DefaultSecurity Menu Default System Devices Menu DefaultBoot Menu Default Power MenuOB 900B On OB 900† Off Exit MenuReplaceable 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 Part Number Exchange Part Number ReferenceDescription User OmniBook Repl 900B 900† 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 StatementType of Imperfection OmniBook 900 LCD Guidelines TFTElectrical Imperfections Mechanical ImperfectionsReference Information HP OmniBook Obsolete Parts Obsolete Repair PartsObsolete New Description Part Number Page Page Part Number F1770-90001