Removal and Replacement ProceduresMaintenance and Service Guide5555.19 System Board.All system board spares kits include a disk cell RTC battery..When replacing the system board, ensure that the following components are removed from the defective system board and installed on the replacement system board:n Memory modules (Section 5.5)n Mini PCI communications card (Section 5.6)n RTC battery (Section 5.14)n Menu control button board (Section 5.15)n Heat sink (Section 5.16)n Processor (Section 5.18)Spare Part Number InformationFor use on HP Pavilion dv1000 notebook models with Intel Pentium M processors367799-001For use on HP Pavilion dv1000 notebook models with Intel Celeron M processors367800-001For use on HP Compaq nx4800 and Compaq Presario V2000 notebook models with Intel Pentium M processors373522-001For use on Compaq Presario V2000 notebook models with Intel Celeron M processors373523-001