Removal and Replacement Procedures

5.23 System Board

Spare Part Number Information

System board with 128 MB of video memory

349206-001

System board with 64 MB of video memory

345064-001

✎Both system boards include thermal grease.

✎When replacing the system board, ensure that the following components are removed from the defective system board and installed on the replacement system board:

■Memory expansion boards (refer to Section 5.10)

■Modem board (refer to Section 5.11)

■Mini PCI communications board (refer to Section 5.12)

■Heat sink (refer to Section 5.13)

■Processor (refer to Section 5.14)

■Real time clock battery (refer to Section 5.16)

■Security card (refer to Section 5.17)

1.Prepare the notebook for disassembly (refer to Section 5.3) and remove the following components:

❏Keyboard (refer to Section 5.9)

❏LED switch cover (refer to Section 5.15)

❏Display assembly (refer to Section 5.18)

❏Top cover (refer to Section 5.19)

❏Fan (refer to Section 5.22)

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Maintenance and Service Guide