Preface
IX
Preface
Contents
Introduction ..............................................1-1
Overview .........................................................................................1-1
Specifications ..................................................................................1-2
External Locator - Top View with LCD Panel Open ......................1-4
External Locator - Front & Right Side Views .................................1-5
External Locator - Left Side & Rear View .....................................1-6
External Locator - Bottom View .....................................................1-7
Mainboard Overview - Top (Key Parts) .........................................1-8
Mainboard Overview - Bottom (Key Parts) ....................................1-9
Mainboard Overview - Top (Connectors) .....................................1-10
Mainboard Overview - Bottom (Connectors) ...............................1-11
Disassembly ...............................................2-1
Overview .........................................................................................2-1
Maintenance Tools ..........................................................................2-2
Connections .....................................................................................2-2
Maintenance Precautions .................................................................2-3
Disassembly Steps ...........................................................................2-4
Removing the Keyboard ..................................................................2-5
Removing the Battery ......................................................................2-6
Removing the M.2 SSD Module .....................................................2-8
Removing the Hard Disk Drive .......................................................2-9
Removing the System Memory (RAM) ........................................2-11
Removing the Wireless LAN Module ...........................................2-12
Wireless LAN, Combo Module Cables .........................................2-13
Installing the Touchpad .................................................................2-14
Part Lists ..................................................A-1
Part List Illustration Location ........................................................ A-2
Top (NP50HH / NP50HJ / NP50HK) ............................................ A-3
Top (NP55HH / NP55HJ / NP55HK) ............................................ A-4
Bottom ........................................................................................... A-5
Main Board ................................................................................... A-6
HDD .............................................................................................. A-7
LCD (NP50HH / NP50HJ / NP50HK) .......................................... A-8
LCD (NP55HH / NP55HJ / NP55HK) .......................................... A-9
Schematic Diagrams................................. B-1
System Block Diagram ...................................................................B-2
Processor 1/6 ...................................................................................B-3
Processor 2/6 ...................................................................................B-4
Processor 3/6 ...................................................................................B-5
Processor 4/6 ...................................................................................B-6
Processor 5/6 ...................................................................................B-7
Processor 6/6 ...................................................................................B-8
DDR4 CHA SO-DIMM_0 ..............................................................B-9
DDR4 CHB SO-DIMM_0 ............................................................B-10
VGA PCI Express .........................................................................B-11
GPU Frame Buffer Partition .........................................................B-12
Frame Buffer A .............................................................................B-13
Frame Buffer A .............................................................................B-14
Frame Buffer B .............................................................................B-15
Frame Buffer B .............................................................................B-16
VGA NVVDD Coupling ..............................................................B-17
Straps and XTAL ..........................................................................B-18
IFP I/O Interface ...........................................................................B-19
Misc - GPIO, I2C and VBIOS ......................................................B-20
NVIDIA Power Sequence .............................................................B-21
GPU NVVDD, FBVDDQ ............................................................B-22
GPU GND .....................................................................................B-23
mDP ..............................................................................................B-24
Panel, Inverter ...............................................................................B-25