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 Battery ......................................................................2-5
Removing the Keyboard ..................................................................2-6
Removing the Hard Disk Drive .......................................................2-7
Removing the System Memory (RAM) .......................................... 2-9
Removing the M.2 SSD Module ...................................................2-10
Removing the Wireless LAN Module ...........................................2-11
Wireless LAN, Combo, 3G & LTE Module Cables .....................2-12
Removing the 3G Module .............................................................2-13
Removing the CPU Heat Sink .......................................................2-14
Removing the CCD .......................................................................2-15
Part Lists ..................................................A-1
Part List Illustration Location ........................................................ A-2
Top ................................................................................................. A-3
Bottom ........................................................................................... A-4
Main Board ................................................................................... A-5
HDD .............................................................................................. A-6
LCD ............................................................................................... A-7
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 ..................................................................B-9
DDR4 CHB SO-DIMM ................................................................B-10
VGA PCI-E Interface ....................................................................B-11
VGA Frame Buffer Interface ........................................................B-12
VGA Frame Buffer A ...................................................................B-13
VGA Frame Buffer A ...................................................................B-14
VGA Frame Buffer B ...................................................................B-15
VGA Frame Buffer B ...................................................................B-16
VGA I/O .......................................................................................B-17
VGA NVVDD Coupling ..............................................................B-18
PS8625 ..........................................................................................B-19
Panel, Inverter ...............................................................................B-20
CRT ...............................................................................................B-21
HDMI ............................................................................................B-22
PCH 1/9 ........................................................................................B-23
PCH 2/9 ........................................................................................B-24
PCH 3/9 ........................................................................................B-25
Summary of Contents for N855HC
Page 1: ...N855HC ...
Page 2: ......
Page 3: ...Preface I Preface Notebook Computer N855HC Service Manual ...
Page 24: ...Introduction 1 12 1 Introduction ...
Page 43: ...Top A 3 A Part Lists Top Figure A 1 Top ...
Page 44: ...A 4 Bottom A Part Lists Bottom Figure A 2 Bottom ...
Page 45: ...Main Board A 5 A Part Lists Main Board Figure A 3 Main Board ...
Page 46: ...A 6 HDD A Part Lists HDD Figure A 4 HDD ...
Page 47: ...LCD A 7 A Part Lists LCD Figure A 5 LCD ...
Page 48: ...A 8 A Part Lists ...
Page 108: ...Schematic Diagrams B 60 B Schematic Diagrams ...