Removing A Ram Board (User-Replaceable); Figure 2-2. Removing A Ram Board; Table 2-4. Ram Board Replacement Part Numbers - HP OMNIBOOK 4100 Service Manual

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.
Description
RAM board, 32-MB SDRAM (66 MHz)
RAM board, 64-MB SDRAM (66 MHz)
RAM board, 128-MB SDRAM (66 MHz)
RAM board, 32-MB SDRAM (100 MHz)
RAM board, 64-MB SDRAM (100 MHz)
RAM board, 128-MB SDRAM (100 MHz)
† 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.
2-4 Removal and Replacement

Table 2-4. RAM Board Replacement Part Numbers

Part Number
1818-7413
1818-7414
1818-7549
1818-7950
1818-7951
1818-7952

Figure 2-2. Removing a RAM Board

Exchange OmniBook
Part Number 4150B
F1456-69001
F1457-69001
F1622-69001
Note:
OmniBook 4100 shown. For the
OmniBook 4150 Series, there are
two RAM slots (with no RAM built
into the motherboard).
HP OmniBook 4100/4150
4150† 4100