Clevo N350TW User manual

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Notebook Computer
N350TW
Service Manual

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Notice
The company reserves the right to revise this publication or to change its contents without notice. Information contained
herein is for reference only and does not constitute a commitment on the part of the manufacturer or any subsequent ven-
dor. They assume no responsibility or liability for any errors or inaccuracies that may appear in this publication nor are
they in anyway responsible for any loss or damage resulting from the use (or misuse) of this publication.
This publication and any accompanying software may not, in whole or in part, be reproduced, translated, transmitted or
reduced to any machine readable form without prior consent from the vendor, manufacturer or creators of this publica-
tion, except for copies kept by the user for backup purposes.
Brand and product names mentioned in this publication may or may not be copyrights and/or registered trademarks of
their respective companies. They are mentioned for identification purposes only and are not intended as an endorsement
of that product or its manufacturer.
Version 1.0
October 2018
Trademarks
Intel, Pentium and Intel Core are trademarks of Intel Corporation.
Windows® is a registered trademark of Microsoft Corporation.
Other brand and product names are trademarks and /or registered trademarks of their respective companies.

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About this Manual
This manual is intended for service personnel who have completed sufficient training to undertake the maintenance and
inspection of personal computers.
It is organized to allow you to look up basic information for servicing and/or upgrading components of the N350TW se-
ries notebook PC.
The following information is included:
Chapter 1, Introduction, provides general information about the location of system elements and their specifications.
Chapter 2, Disassembly, provides step-by-step instructions for disassembling parts and subsystems and how to upgrade
elements of the system.
Appendix A, Part Lists
Appendix B, Schematic Diagrams
Appendix C, Updating the FLASH ROM BIOS

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IMPORTANT SAFETY INSTRUCTIONS
Follow basic safety precautions, including those listed below, to reduce the risk of fire, electric shock and injury to per-
sons when using any electrical equipment:
1. Do not use this product near water, for example near a bath tub, wash bowl, kitchen sink or laundry tub, in a wet
basement or near a swimming pool.
2. Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote risk of elec-
trical shock from lightning.
3. Do not use the telephone to report a gas leak in the vicinity of the leak.
4. Use only the power cord and batteries indicated in this manual. Do not dispose of batteries in a fire. They may
explode. Check with local codes for possible special disposal instructions.
5. This product is intended to be supplied by a Listed Power Unit with an AC Input of 100 - 240V, 50 - 60Hz, DC Output
of 19V, 3.42A (65W) minimum AC/DC Adapter.
CAUTION
This Computer’s Optical Device is a Laser Class 1 Product
FCC Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
This device may not cause harmful interference.
This device must accept any interference received, including interference that may cause undesired operation.

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Instructions for Care and Operation
The notebook computer is quite rugged, but it can be damaged. To prevent this, follow these suggestions:
1. Don’t drop it, or expose it to shock. If the computer falls, the case and the components could be damaged.
2. Keep it dry, and don’t overheat it. Keep the computer and power supply away from any kind of heating element. This
is an electrical appliance. If water or any other liquid gets into it, the computer could be badly damaged.
3. Follow the proper working procedures for the computer. Shut the computer down properly and don’t forget to save
your work. Remember to periodically save your data as data may be lost if the battery is depleted.
Do not expose the computer
to any shock or vibration.
Do not place it on an unstable
surface.
Do not place anything heavy
on the computer.
Do not expose it to excessive
heat or direct sunlight.
Do not leave it in a place
where foreign matter or mois-
ture may affect the system.
Don’t use or store the com-
puter in a humid environment.
Do not place the computer on
any surface which will block
the vents.
Do not turn off the power
until you properly shut down
all programs.
Do not turn off any peripheral
devices when the computer is
on.
Do not disassemble the com-
puter by yourself.
Perform routine maintenance
on your computer.

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4. Avoid interference. Keep the computer away from high capacity transformers, electric motors, and other strong mag-
netic fields. These can hinder proper performance and damage your data.
5. Take care when using peripheral devices.
Power Safety
The computer has specific power requirements:
• Only use a power adapter approved for use with this computer.
• Your AC adapter may be designed for international travel but it still requires a steady, uninterrupted power supply. If you are
unsure of your local power specifications, consult your service representative or local power company.
• The power adapter may have either a 2-prong or a 3-prong grounded plug. The third prong is an important safety feature; do
not defeat its purpose. If you do not have access to a compatible outlet, have a qualified electrician install one.
• When you want to unplug the power cord, be sure to disconnect it by the plug head, not by its wire.
• Make sure the socket and any extension cord(s) you use can support the total current load of all the connected devices.
• Before cleaning the computer, make sure it is disconnected from any external power supplies.
Use only approved brands of
peripherals.
Unplug the power cord before
attaching peripheral devices.
Do not plug in the power
cord if you are wet.
Do not use the power cord if
it is broken.
Do not place heavy objects
on the power cord.
Power Safety
Warning
Before you undertake
any upgrade proce-
dures, make sure that
you have turned off the
power, and discon-
nected all peripherals
and cables (including
telephone lines). It is
advisable to also re-
move your battery in
order to prevent acci-
dentally turning the
machine on.

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Battery Precautions
• Only use batteries designed for this computer. The wrong battery type may explode, leak or damage the computer.
• Do not continue to use a battery that has been dropped, or that appears damaged (e.g. bent or twisted) in any way. Even if the
computer continues to work with a damaged battery in place, it may cause circuit damage, which may possibly result in fire.
• Recharge the batteries using the notebook’s system. Incorrect recharging may make the battery explode.
• Do not try to repair a battery pack. Refer any battery pack repair or replacement to your service representative or qualified service
personnel.
• Keep children away from, and promptly dispose of a damaged battery. Always dispose of batteries carefully. Batteries may explode
or leak if exposed to fire, or improperly handled or discarded.
• Keep the battery away from metal appliances.
• Affix tape to the battery contacts before disposing of the battery.
• Do not touch the battery contacts with your hands or metal objects.
Battery Guidelines
The following can also apply to any backup batteries you may have.
• If you do not use the battery for an extended period, then remove the battery from the computer for storage.
• Before removing the battery for storage charge it to 60% - 70%.
• Check stored batteries at least every 3 months and charge them to 60% - 70%.
Battery Disposal
The product that you have purchased contains a rechargeable battery. The battery is recyclable. At the end of its useful life, under var-
ious state and local laws, it may be illegal to dispose of this battery into the municipal waste stream. Check with your local solid waste
officials for details in your area for recycling options or proper disposal.
Caution
Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer.
Discard used battery according to the manufacturer’s instructions.
Battery Level
Click the battery icon in the taskbar to see the current battery level and charge status. A battery that drops below a level of 10%
will not allow the computer to boot up. Make sure that any battery that drops below 10% is recharged within one week.

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Related Documents
You may also need to consult the following manual for additional information:
User’s Manual on CD/DVD
This describes the notebook PC’s features and the procedures for operating the computer and its ROM-based setup pro-
gram. It also describes the installation and operation of the utility programs provided with the notebook PC.
System Startup
1. Remove all packing materials.
2. Place the computer on a stable surface.
3. Insert the battery and make sure it is locked in position.
4. Securely attach any peripherals you want to use with the computer
(e.g. keyboard and mouse) to their ports.
5. Attach the AC/DC adapter to the DC-In jack at the left of the
computer, then plug the AC power cord into an outlet, and connect
the AC power cord to the AC/DC adapter.
6. Use one hand to raise the
lid/LCD to a comfortable viewing angle
(do not exceed 180 degrees - or 130 degrees if the system is
docked to the docking station or has a 9 cell battery inserted)
;
use the other hand (as illustrated in Figure 1) to support the base of
the computer (Note:Never lift the computer by the lid/LCD).
7. Press the power button to turn the computer “on”.
Shut Down
Note that you should al-
ways shut your com-
puter down by
choosing the Shut
Down command from
the bottom right of the
Start menu in Win-
dows. This will help
prevent hard disk or
system problems.
130º
130º
Figure 1
Opening the Lid/LCD/
Computer with AC/DC
Adapter Plugged-In

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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 and Installing the Hard Disk Drive ................................2-6
Removing the System Memory (RAM) ..........................................2-9
Removing and Installing a Processor ............................................2-11
Removing the 3G Module .............................................................2-14
Removing the Wireless LAN Module ...........................................2-15
Wireless LAN, Combo, 3G & LTE Module Cables .....................2-16
Removing and Installing the M.2 SSD Module ............................2-17
Removing the Optical Device .......................................................2-19
Removing the Keyboard ................................................................2-20
Part Lists ..................................................A-1
Part List Illustration Location ........................................................A-2
Top ................................................................................................. A-3
Bottom ........................................................................................... A-4
DVD ............................................................................................... A-5
LCD ............................................................................................... A-6
MB ................................................................................................. 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 SO-DIMM_0 .......................................................................B-9
DDR4 SO-DIMM_1 .....................................................................B-10
Panel, Inverter ...............................................................................B-11
HDMI ............................................................................................B-12
CRT ...............................................................................................B-13
PCH 1/9I .......................................................................................B-14
PCH 2/9 ........................................................................................B-15
PCH 3/9 ........................................................................................B-16
PCH 4/9 ........................................................................................B-17
PCH 5/9 ........................................................................................B-18
PCH 6/9 ........................................................................................B-19
PCH 7/9 ........................................................................................B-20
PCH 8/9 ........................................................................................B-21
PCH 9/9 ........................................................................................B-22
LAN i219-LM ...............................................................................B-23
LAN Transformer .........................................................................B-24
Card Reader RTS5229 ..................................................................B-25

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USB Port ...................................................................................... B-26
3G/LTE ......................................................................................... B-27
TPM, CCD, HDD, ODD .............................................................. B-28
WLAN .......................................................................................... B-29
KBC-ITE IT8587 ......................................................................... B-30
Audio Codec ALC892+TPA2008 ................................................ B-31
PI3WVR13612ZLE ...................................................................... B-32
PS8338B ....................................................................................... B-33
miniDP ......................................................................................... B-34
Type-C .......................................................................................... B-35
TR_TBT ....................................................................................... B-36
TR_Power ..................................................................................... B-37
TPS65987D .................................................................................. B-38
SSD ............................................................................................... B-39
Fan, TP, Connector ....................................................................... B-40
Docking Connector, COM Port .................................................... B-41
1.5VS, VCCST ............................................................................. B-42
5VS, 3VS, 3.3V, 5V ..................................................................... B-43
1.05V, VCCIO .............................................................................. B-44
1.2V, 0.6VS .................................................................................. B-45
VDD3, VDD5 ............................................................................... B-46
VCore & VCCGT ......................................................................... B-47
VCore Output Stage ..................................................................... B-48
VCCGT Output Stage .................................................................. B-49
AC-In, Charger ............................................................................. B-50
Audio Board ................................................................................. B-51
Power Switch Board ..................................................................... B-52
Click Board .................................................................................. B-53
LED Board ................................................................................... B-54
Smart Card Board ......................................................................... B-55
LID Switch Board ........................................................................ B-56
Power On Sequence ..................................................................... B-57
Updating the FLASH ROM BIOS......... C-1
Download the BIOS ........................................................................C-1
Unzip the downloaded files to a bootable CD/DVD/ or
USB Flash drive ..............................................................................C-1
Set the computer to boot from the external drive ...........................C-1
Use the flash tools to update the BIOS ...........................................C-2
Restart the computer (booting from the HDD) ...............................C-2

Introduction
Overview 1 - 1
1.Introduction
Chapter 1: Introduction
Overview
This manual covers the information you need to service or upgrade the N350TW series notebook computer. Information
about operating the computer (e.g. getting started, and the Setup utility) is in the User’s Manual. Information about dri-
vers (e.g. VGA & audio) is also found in the User’s Manual. The manual is shipped with the computer.
Operating systems (e.g. Windows 10, etc.) have their own manuals as do application softwares (e.g. word processing and
database programs). If you have questions about those programs, you should consult those manuals.
The N350TW series notebook is designed to be upgradeable. See Disassembly on page 2 - 1 for a detailed description
of the upgrade procedures for each specific component. Please take note of the warning and safety information indicated
by the “ ” symbol.
The balance of this chapter reviews the computer’s technical specifications and features.

Introduction
1 - 2 Specifications
1.Introduction
Specifications
Latest Specification Information
The specifications listed here are correct at the
time of sending them to the press. Certain items
(particularly processor types/speeds) may be
changed, delayed or updated due to the manu-
facturer's release schedule. Check with your
service center for more details.
CPU
The CPU is not a user serviceable part. Ac-
cessing the CPU in any way may violate your
warranty.
Processor Options
Intel® Core™ i7 Processor
i7-8700T (2.4GHz)
12MB Smart Cache, 14nm, DDR4-2666MHz, TDP 35W
Intel® Core™ i5 Processor
i5-8600T (2.3GHz), i5-8500T (2.1GHz)
9MB Smart Cache, 14nm, DDR4-2666MHz, TDP 35W
Intel® Core™ i3 Processor
i3-8300T (3.2GHz)
8MB Smart Cache, 14nm, DDR4-2400MHz, TDP 35W
Intel® Pentium Gold Processor
G5500T (3.2GHz), G5400T (3.1GHz)
4MB Smart Cache, 14nm, DDR4-2400MHz, TDP 35W
LCD
15.6" (39.62cm), 16:9, HD (1366x768)/FHD (1920x1080)
BIOS
Insyde BIOS (128Mb SPI Flash ROM)
Core Logic
Intel® H370 Chipset
Memory
Two 204 Pin SO-DIMM Sockets Supporting DDR4 2666/
2400MHz Memory
Memory Expandable up to 32GB
(The real memory operating frequency depends on the FSB
of the processor.)
Storage
One Changeable 2.5" 9.5mm/7.0mm (h) SATA HDD/SSD
(Factory Option) One Changeable 9.5mm(h) Super Multi
Optical Device Drive
(Factory Option) One M.2 SATA/PCIe Gen3 x4 Solid State
Drive (SSD)
Video Adapter
Intel Integrated GPU
Intel® HD Graphics 630 (i7-8700T, i5-8600T, i5-8500T, i3-
8300T, G5500T)
Dynamic Frequency
Intel Dynamic Video Memory Technology
Microsoft DirectX®12 Compatible
Intel® UHD Graphics 610 (G5400T)
Dynamic Frequency
Intel Dynamic Video Memory Technology
Microsoft DirectX®12 Compatible
Audio
High Definition Audio Compliant Interface
2 * Built-In Speakers
Built-In Array Microphone
Security
BIOS Password
Security (Kensington® Type) Lock Slot
Fingerprint Reader
TPM v 2.0
Keyboard
Full-size “WinKey” keyboard (with numeric keypad)
(Factory Option) Full-size “WinKey” Illuminated White-
LED Keyboard (with numeric keypad)
Pointing Device
Built-in Touchpad (scrolling key functionality integrated)

Introduction
Specifications 1 - 3
1.Introduction
Interface
One USB 2.0 Port
Two USB 3.0 (USB 3.1 Gen 1) Type-A Ports (Including one
AC/DC Powered USB Port)
One USB 3.1 Gen 2 Type-C Port*
*The maximum amount of current supplied by USB Type-C
ports is 500mA (USB 2.0)/900mA (USB 3.1).
Or
(Factory Option) One Thunderbolt 3 Port
One External Monitor Port
One HDMI-Out Port
One Mini DisplayPort (1.2)
One Headphone and S/PDIF Out Combo Jack
One Microphone-In Jack
One RJ-45 LAN Jack
One Docking Port
One DC-in Jack
Communication
Built-In 10/100/1000Mb Base-TX Ethernet LAN
1.0M HD PC Camera Module
(Factory Option)4G M.2 Module
(Factory Option) Intel® Dual Band Wireless-AC 9560 Wire-
less LAN (802.11ac) + Bluetooth
Slots
(Factory Option) One Smart Card Reader Slot
M.2 Slots
Slot 1 for WLAN and Bluetooth Combo Module
Slot 2 for SATA/PCIe Gen3 x4 SSD
(Factory Option) Slot 3 for 4G Module
Card Reader
Embedded Multi-in-1 Push-Push Card Reader
MMC (MultiMedia Card) / RS MMC
SD (Secure Digital) / Mini SD / SDHC/ SDXC
Environmental Spec
Temperature
Operating: 5°C - 35°C
Non-Operating: -20°C - 60°C
Relative Humidity
Operating: 20% - 80%
Non-Operating: 10% - 90%
Power
Full Range AC/DC Adapter
AC Input: 100 - 240V, 50 - 60Hz
DC Output: 19V, 3.42A (65W)
Removable 6 Cell Smart Lithium-Ion Battery Pack, 62WH
(Factory Option) Removable 9 Cell Smart Lithium-Ion Bat-
tery Pack, 93WH
Dimensions & Weight
382mm (w) * 259.5mm (d) * 32.95mm (h)
2.5kg (Barebone with 62WH Battery)

Introduction
1 - 4 External Locator - Top View with LCD Panel Open
1.Introduction
External Locator - Top View with LCD Panel Open
Figure 1
Top View
1. PC Camera
(Optional)
2. *PC Camera LED
*When the PC
camera is in use,
the LED will be
illuminated in red.
3. Built-In Array
Microphone
4. LCD
5. Power Button
6. Keyboard
7. Touchpad &
Buttons
8. Fingerprint Reader
9. LED Indicators
2
4
1 3
5
6
8
7
9
3

Introduction
External Locator - Front & Right Side Views 1 - 5
1.Introduction
External Locator - Front & Right Side Views Figure 2
Front View
1. LED Indicator
FRONT VIEW
1
RIGHT SIDE VIEW
1 2 3 5
47
6
Figure 3
Right Side View
1. USB 2.0 Port
2. Microphone-In
Jack
3. Headphone and
S/PDIF Out
Combo Jack
4. Optical Device
Drive Bay
5. Emergency Eject
Hole
6. Smart Card
Reader
(Optional)
7. Security Lock
Slot

Introduction
1 - 6 External Locator - Left Side & Rear View
1.Introduction
External Locator - Left Side & Rear View
/
Figure 4
Left Side View
1. DC-In Jack
2. External Monitor
Port
3. RJ-45 LAN Jack
4. Powered USB 3.0
Port
5. USB 3.0 Port
6. Vent
7. HDMI-Out Port
8. Mini Display Port
9. USB 3.1 Gen 2
Type-C Port or
(Factory Option)
Thunderbolt 3 Port
10. Multi-in-1 Card
Reader
10
LEFT SIDE VIEW
1
234
6
9
8
75
Figure 5
Rear View
1. Battery
REAR VIEW
1

Introduction
External Locator - Bottom View 1 - 7
1.Introduction
External Locator - Bottom View
Figure 6
Bottom View
1. Battery
2. Docking Port
3. Vent
4. Component Bay
Cover
5. Speakers
Overheating
To prevent your com-
puter from overhea-
ting, make sure no-
thing blocks any vent
while the computer is
in use.
2
3
1
5
3 3
5
4
3

Introduction
1 - 8 Mainboard Overview - Top (Key Parts)
1.Introduction
Mainboard Overview - Top (Key Parts)Figure 7
Mainboard Top
Key Parts
1. KBC ITE IT8587
1

10
1
2
3
6
4
5
78
9
Figure 8
Mainboard Bottom
Key Parts
1. CPU Socket (no
CPU installed)
2. Platform Controller
Hub
3. Memory Slots
DDR3 SO-DIMM
4. Mini-Card
Connector (SSD
Module)
5. Mini-Card
Connector (WLAN/
BT Module)
6. Mini-Card
Connector (3G/
LTE Module)
7. SIM Card
8. Docking Station
Connector
9. CMOS Battery
Introduction
Mainboard Overview - Bottom (Key Parts) 1 - 9
1.Introduction
Mainboard Overview - Bottom (Key Parts)

Introduction
1 - 10 Mainboard Overview - Top (Connectors)
1.Introduction
Mainboard Overview - Top (Connectors)
Figure 9
Mainboard Top
Connectors
1. Powered USB 3.0
Port
2. USB Ports 3.0
3. HDMI-Out Port
4. Mini Display Port
5. Multi-in-1 Card
Reader
6. Keyboard Cable
Connector
7. Audio Board
Connector
1
2
3
5
4
7
6