System board
Description Spare part number
System board
All system boards use the following part numbers:
xxxxxx-001: Non-Windows operating system
xxxxxx-601: Windows 10 operating system
Intel i7-6700HQ processor for use in models with 2 GB of GeForce GTX 950M discrete graphics memory 856673-xxx
Intel i5-6300HQ processor for use in models with 2 GB of GeForce GTX 950M discrete graphics memory 856674-xxx
Intel i3-6100HQ processor for use in models with 2 GB of GeForce GTX 950M discrete graphics memory 856675-xxx
Intel i7-6700HQ processor for use in models with 2 GB of GeForce GTX 960M discrete graphics memory 856676-xxx
Intel i5-6300HQ processor for use in models with 4 GB of GeForce GTX 960M discrete graphics memory 856677-xxx
Intel i7-6700HQ processor for use in models with 4 GB of GeForce GTX 960M discrete graphics memory 856678-xxx
Intel i5-6300HQ processor for use in models with 2 GB of GeForce GTX 960M discrete graphics memory 856679-xxx
Intel i7-7700HQ processor for use in models with 2 GB of discrete memory GeForce GTX 1050M discrete
graphics memory
914770-xxx
Intel i5-7300HQ processor for use in models with 2 GB of discrete memory GeForce GTX 1050M discrete
graphics memory
914771-xxx
Intel i7-7700HQ processor for use in models with 4 GB of discrete memory GeForce GTX 1050M discrete
graphics memory
914772-xxx
Intel i5-7300HQ processor for use in models with 4 GB of discrete memory GeForce GTX 1050M discrete
graphics memory
914773-xxx
Intel i7-7500U processor for use in models with 4 GB of GeForce GTX 950M discrete graphics memory L03381-xxx
Intel i7-7200U processor for use in models with 4 GB of GeForce GTX 950M discrete graphics memory L03382-xxx
Intel i7-7200U processor for use in models with 2 GB of GeForce GTX 950M discrete graphics memory L03380-xxx
IMPORTANT: Make special note of each screw and screw lock size and location during removal
and replacement.
Before removing the system board, follow these steps:
1. Shut down the computer.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet and then
unplugging the AC adapter from the computer.
4. Remove the base enclosure (see Base enclosure on page 32), and then remove the following
components:
a. Hard drive (see Hard drive on page 37).
b. Battery (see Battery on page 34).
c. Fans (see Fans on page 51).
Component replacement procedures 53
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