System Board - HP Compaq Presario,Presario CQ42-121 Maintenance And Service Manual

System board

Description
System board for use in models with UMA graphics subsystem memory,
System board for use in models with DSC HD5430 MDM CR (for model 1.0 only)
System board for use in models with DSC HD5430 (for model 1.0 only)
System board for use in models with UMA graphics subsystem memory
System board for use in models with HD545V DSC (for model 1.0 only)
System board for use in models with HD545V DSC CR (for model 1.0 only)
System board for use in models with discrete graphics subsystem with HD5470/512 MB (for
model 1.1 only)
System board for use in models with discrete graphics subsystem with HD5470/512 MB with
HDMI card reader (for model 1.1 only)
System board for use in models with discrete graphics subsystem with HD5470/1 G (for model 1.1
only)
System board for use in models with discrete graphics subsystem with HD5470/1 G with HDMI
card reader (for model 1.1 only)
System board for use in models with discrete graphics subsystem with HD6370/512M (for model
1.2 only)
System board for use in models with discrete graphics subsystem with HD6370/512M with HDMI
card reader(for model 1.2 only)
System board for use in models with discrete graphics subsystems HD6370/1G (for model 1.2
only)
System board for use in models with discrete graphics subsystems HD6370/512M with HDMI card
reader (for model 1.2 only)
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
●
Memory modules (see
●
WLAN module (see
●
Modem module (see
Before removing the system board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
ENWW
RTC battery on page 86)
Memory module on page
WLAN module on page
Modem module on page
60)
58)
70)
Component replacement procedures
Spare part number
592808-001
592811-001
592810-001
592809-001
611554-001
611555-001
616405–001
616406–001
616407–001
616408–001
632183-001
632184-001
632185-001
632186-001
81