Removing a RAM Board

(User-Replaceable)

The OmniBook 4100 has 32 MB of RAM on the motherboard and has one RAM slot for installing additional RAM. The OmniBook 4150 Series has no RAM on the motherboard and has two RAM slots for installing RAM.

Table 2-4. RAM Board Replacement Part Numbers

Description

Part Number

Exchange

 

OmniBook

 

 

 

Part Number

4150B

 

4150†

4100

RAM board, 32-MB SDRAM (66 MHz)

1818-7413

F1456-69001

 

 

∙

∙

RAM board, 64-MB SDRAM (66 MHz)

1818-7414

F1457-69001

 

 

∙

∙

RAM board, 128-MB SDRAM (66 MHz)

1818-7549

F1622-69001

 

 

∙

∙

RAM board, 32-MB SDRAM (100 MHz)

1818-7950

 

∙

 

∙

∙

RAM board, 64-MB SDRAM (100 MHz)

1818-7951

 

∙

 

∙

∙

 

 

 

 

 

 

 

RAM board, 128-MB SDRAM (100 MHz)

1818-7952

 

∙

 

∙

∙

†Models called 4150† in this manual have no marking in the serial number, whereas models called 4150B have 4150 B after the serial number.

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.Turn the unit bottom side up, then remove the two screws from the RAM/BIOS cover and remove the cover.

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

4.Pull the board out of the connector.

Note:

OmniBook 4100 shown. For the OmniBook 4150 Series, there are two RAM slots (with no RAM built into the motherboard).

Figure 2-2. Removing a RAM Board

2-4

Removal and Replacement

HP OmniBook 4100/4150