HP G42t-300 Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - Maintena - Page 93
System board, Memory modules see
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System board Description Spare part number System board for use in models with discrete graphics subsystem (for models 1.0 and 1.1 only) 595181-001 System board for use in models with Unified Memory Architecture (UMA) graphics subsystem 595182-001 System board for use in models with discrete graphics subsystem and HDMI card reader (for models 1.0, 1.1 and 1.2 only) 595183-001 System board for use in models with UMA graphics subsystem and HDMI card reader 595184-001 System board for use in models with UMA graphics subsystem memory, Intel GL40 chipset, and HDMI card reader 605140-001 System board for use in HM55 HD5430/1 G discrete subsystem (for model 1.1 only) 608823-001 System board for use in HD5430/1 G discrete subsystem with HDMI card reader (for model 1.1 only) 608824-001 System board for use in HM55 HD545V discrete subsystem (for model 1.1 only) 615577-001 System board for use in HM55 HD545V discrete subsystem with HDMI card reader (for model 1.1 615578-001 only) System board for use in HD5470/512 MB discrete subsystem (for model 1.2 only) 615579-001 System board for use in HD5470/512 MB discrete subsystem with HDMI card reader (for model 1.2 only) 615580-001 System board for use in HD5470/1 GB discrete subsystem (for model 1.2 only) 615581-001 System board for use in HD5470/1 GB discrete subsystem with HDMI card reader (for model 1.2 615582-001 only) System board for use in HD6370/512 subsystem with HDMI card reader (for model 1.3 only) 631593-001 System board for use in HD6370/1-GB (for model 1.3 only) 631594-001 System board for use in HD6370/512M with HDMI reader card (for model 1.3 only) 631595-001 System board for use in HD6370/512M i3-370M with HDMI (for model 1.3 only) 631596-001 System board for use in i3-350M UMA subsystems (for model 1.3 only) 634648-001 System board for use in i3-370M UMA subsystems (for model 1.3 only) 637583-001 System board for use in HD6370/512M i3-370M (for model 1.3 only) 637584-001 System board GL40 UMA HDMI ROM 2M (for model 1.3 only) 639266-001 When replacing the system board, be sure that the following components are removed from the defective system board and installed on the replacement system board: ● RTC battery (see RTC battery on page 89) ● Memory modules (see Memory module on page 61) ● WLAN module (see WLAN module on page 58) ● Modem module (see Modem module on page 71) ENWW Component replacement procedures 83