HP (Hewlett-Packard) NX9020 ユーザーズマニュアル

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5–10
Maintenance and Service Guide
Removal and Replacement Procedures
5.5 Memory Module
2. Loosen the 2 PM2.0×4.0 screws 1 that secure the memory 
module compartment cover to the notebook.
3. Lift the back edge of the memory module compartment 
cover and swing it forward 2.
4. Remove the memory module compartment cover.
Spare part number 371806-001 should be used to replace the 
memory module compartment cover.
Removing the Memory Module Compartment Cover
Spare Part Number Information
512-MB DDR
256-MB DDR
128-MB DDR
371775-001
371774-001
371773-001