Clevo NR40BU, NR41BU service manual
NR40BU / NR41BU
Notebook Computer
NR40BU / NR41BU
Service Manual
Preface
Preface
I
Preface
Preface
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 vendor. 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 publication, 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
November 2020
Trademarks
Pentium and Celeron 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.
II
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 NR40BU /
NR41BU series 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.
Preface
Appendix A, Part Lists
Appendix B, Schematic Diagrams
Preface
III
Preface
IMPORTANT SAFETY INSTRUCTIONS
Follow basic safety precautions, including those listed below, to reduce the risk of fire, electric shock and injury to persons 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 electrical 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, 2.37A (45 Watts) minimum AC/DC Adapter.
Preface
IV
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.
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.
Preface
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.
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.
Do not expose it to excessive
heat or direct sunlight.
Do not leave it in a place
where foreign matter or moisture may affect the system.
Don’t use or store the computer in a humid environment.
Do not place the computer on
any surface which will block
the vents.
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 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 computer by yourself.
Perform routine maintenance
on your computer.
Preface
V
Preface
Power Safety
Warning
Before you undertake
any upgrade procedures, make sure that
you have turned off the
power, and disconnected all peripherals
and cables (including
telephone lines and
power cord). It is advisable to also remove
your battery in order to
prevent accidentally
turning the machine
on.
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.
Preface
VI
Use only approved brands of
peripherals.
Unplug the power cord before
attaching 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.
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.
Battery Precautions
Battery Disposal
The product that you have purchased contains a rechargeable battery. The battery is recyclable. At the end of its useful life, under various 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.
• 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%.
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Preface
VII
Preface
Shut Down
Note that you should always
shut your computer down by
choosing Shut Down from the
Start Menu.
This will help prevent hard disk
or system problems.
Figure 1
Opening the Lid/LCD/
Computer with AC/DC
Adapter Plugged-In
180°
Powering the
Computer On
After every disassembly, make sure that the
bottom case’s screws
are all inserted and
tightened before turning the computer on.
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VIII
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 program. 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. Securely attach any peripherals you want to use with the
computer (e.g. keyboard and mouse) to their ports.
4. When first setting up the computer use the following pro-
cedure (as to safeguard the computer during shipping, the
battery will be locked to not power the system until first connected to the AC/DC adapter and initially set up as below):
• Attach the AC/DC adapter cord to the DC-In jack on the
right of the computer, then plug the AC power cord into an
outlet, and connect the AC power cord to the AC/DC
adapter. The battery will now be unlocked.
5. Use one hand to raise the
angle
(do not exceed 130 degrees); 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).
6. Press the power button on the left side of the computer to
turn the computer “on” (note that the lid/LCD must be open
for the power button to function).
lid/LCD to a comfortable viewing
Contents
Preface
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 ..................................................................2-7
Removing the Hard Disk Drive ....................................................... 2-8
Removing the System Memory (RAM) ........................................2-10
Removing the Wireless LAN Module ........................................... 2-12
Wireless LAN, and Combo Module Cables ..................................2-13
Removing and Installing the M.2 SSD Module ............................2-14
Removing the CCD .......................................................................2-15
Part Lists ..................................................A-1
Part List Illustration Location ........................................................A-2
Top .................................................................................................A-3
Bottom ............................................................................................ A-4
HDD ............................................................................................... A-5
LCD ............................................................................................... A-6
MB ................................................................................................. A-7
Schematic Diagrams................................. B-1
System Block Diagram ...................................................................B-2
Processor 1/9 ...................................................................................B-3
Processor 2/9 ...................................................................................B-4
Processor 3/9 ...................................................................................B-5
Processor 4/9 ...................................................................................B-6
Processor 5/9 ...................................................................................B-7
Processor 6/9 ...................................................................................B-8
Processor 7/9 ...................................................................................B-9
Processor 8/9 .................................................................................B-10
Processor 9/9 .................................................................................B-11
DDR4 CHA SO-DIMM_0 ............................................................B-12
DDR4 CHB SO-DIMM_0 ............................................................B-13
Panel, Inverter ...............................................................................B-14
Type-C ..........................................................................................B-15
HDMI 1.4 ......................................................................................B-16
USB Charger .................................................................................B-17
M.2 PCIE SSDl .............................................................................B-18
M.2 WLAN+BT ...........................................................................B-19
HDD, Click TP, FP, Audio, PWR SW .........................................B-20
LED, CCD, TPM, Fan ..................................................................B-21
ALC293D .....................................................................................B-22
KBC-ITE IT5570 ..........................................................................B-23
Connector I/O Board, White LED ................................................B-24
1.8VA, 3.3VA ...............................................................................B-25
VDDP_ALW ................................................................................B-26
5V, 5VS, 3.3V, 3.3VS ..................................................................B-27
Preface
IX
Preface
VDD3, VDD5, 1.8VS, 1.8V ......................................................... B-28
1.5VS ............................................................................................ B-29
VDDQ, VTT_MEM, 2.5V ........................................................... B-30
VCore ........................................................................................... B-31
VDDCR ........................................................................................ B-32
AC_In, Charger ............................................................................ B-33
RTL8411B .................................................................................... B-34
Combo, USB, SD, RJ45, SPK BD ............................................... B-35
Power Sequence ...........................................................................B-36
Preface
X
Chapter 1: Introduction
Overview
This manual covers the information you need to service or upgrade the NR40BU / NR41BU 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. Window 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.
Introduction
The NR40BU / NR41BU 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.
1.Introduction
Overview 1 - 1
Introduction
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 manufacturer's release schedule. Check with your
service center for more details.
CPU
The CPU is not a user serviceable part. Accessing the CPU in any way may violate your
warranty.
Specifications
1.Introduction
Processor Options
AMD Ryzen™ 3 Processor
3250U (2.60GHz)
8MB Smart Cache, 14nm, DDR4-2400MHz, TDP 15W
AMD Athlon™ Processor
Gold 3150U (2.40GHz)
4MB Smart Cache, 14nm, DDR4-2400MHz, TDP 15W
Silver 3050U (2.30GHz)
4MB Smart Cache, 14nm, DDR4-2400MHz, TDP 15W
BIOS
128Mb SPI Flash ROM
Insyde BIOS
Memory
Dual Channel DDR4
Two 260 Pin SO-DIMM Socket Supporting DDR4 2666MHz
Memory
Memory Expandable up to 32GB
Compatible with 8GB or 16GB Modules
(The real memory operating frequency depends on the FSB
of the processor.)
LCD Options
14" (35.56cm), 16:9, HD (1366x768) /FHD (1920x1080)
Storage
One Changeable 2.5" 7mm (h) SATA HDD/SSD
(Factory Option) One M.2 PCIe Gen3 x4 Solid State Drive
(SSD)
Card Reader
MicroSD Card Reader
Video Adapter
AMD Radeon Vega
HDR support
Rec. 2020
Microsoft DirectX®12 Compatible
FreeSync support
Pointing Device
Built-in Touchpad (with Microsoft PTP Multi Gesture & Scrolling Functionality)
Or
(Factory Option) Built-in Secure Pad (with Microsoft PTP
Multi Gesture & Scrolling Functionality)
Keyboard
Keyboard
Or
(Factory Option) White-LED Keyboard
Audio
High Definition Audio Compliant Interface
2 * Built-In Speakers
Built-In Array Microphone
Security
Security (Kensington® Type) Lock Slot
BIOS Password
(Factory Option) TPM 2.0
(Factory Option) Fingerprint Sensor
M.2 Slots
Slot 1 for WLAN and Bluetooth Combo Module
Slot 2 for PCIe Gen3 x4 SSD
1 - 2 Specifications
Introduction
Communication
Built-In 10/100/1000Mb Base-TX Ethernet LAN
1.0M HD PC Camera Module
(Factory Option) Intel® Dual Band Wi-Fi 6 AX200 Wireless
LAN (802.11ax) + Bluetooth
Interface
One USB 3.2 Gen 1 Type-C Port*
*The maximum amount of current supplied by USB Type-C
ports is 500mA (USB 2.0)/900mA (USB3.2).
Two USB 3.2 Gen 1 Type-A Ports
One HDMI-Out Port
One 2-In-1 Audio Jack (Headphone / Microphone)
One RJ-45 LAN Jack
One DC-in Jack
Power
Full Range AC/DC Adapter
AC Input: 100 - 240V, 50 - 60Hz
DC Output: 19V, 2.37A (45W)
Embedded 3 Cell Smart Lithium-Ion Battery Pack, 36WH
(Factory Option) Embedded 4 Cell Smart Lithium-Ion Battery Pack, 49WH
Dimensions & Weight
325.9mm (w) * 226.9mm (d) * 20.9mm (h)
(Height Excluding Battery Area)
1.4kg (Barebone with 36WH Battery)
1.Introduction
Environmental Spec
Temperature
Operating: 5°C - 35°C
Non-Operating: -20°C - 60°C
Relative Humidity
Operating: 20% - 80%
Non-Operating: 10% - 90%
Specifications 1 - 3
Introduction
Figure 1
Top View
1. PC Camera
2. *PC Camera LED
*When the PC
camera is in use,
the LED will be
illuminated in
white.
3. Built-In
Microphone
4. Display
5. Vent
6. LED Indicators
7. Keyboard
8. Touchpad &
Buttons
9. (Factory Option)
Fingerprint Sensor
5
7
2 1 3
4
3
6
8
9
1.Introduction
External Locator - Top View with LCD Panel Open
1 - 4 External Locator - Top View with LCD Panel Open
External Locator - Front & Right Side Views
Figure 2
Front View
Figure 3
Right Side View
1. Speaker
2. USB 3.2 Gen 1
Type-C Port
3. USB 3.2 Gen 1
Type-A Port
4. HDMI-Out Port
5. Power Button
6. DC-In Jack
FRONT VIEW
RIGHT SIDE VIEW
1
2
3
4
5
6
Introduction
1.Introduction
External Locator - Front & Right Side Views 1 - 5
1.Introduction
Figure 4
Left Side View
1. Security Lock Slot
2. RJ-45 LAN Jack
3. MicroSD Card
Reader
4. USB 3.2 Gen 1
Type-A Port
5. 2-In-1 Audio Jack
(Headphone and
Microphone)
6. Speaker
LEFT SIDE VIEW
1
2
3
4
5
6
Figure 5
Rear View
1. Vent
REAR VIEW
1
Introduction
External Locator - Left Side & Rear View
/
1 - 6 External Locator - Left Side & Rear View
External Locator - Bottom View
Figure 6
Bottom View
1. Vents
2. Speakers
Overheating
To prevent your computer from overheating, make sure nothing blocks any vent
while the computer is
in use.
1
1
2
1 1
2
1
Introduction
1.Introduction
External Locator - Bottom View 1 - 7
Introduction
Figure 7
Mainboard Top
Key Parts
1. KBC-ITE IT5570
1
1.Introduction
Mainboard Overview - Top (Key Parts)
1 - 8 Mainboard Overview - Top (Key Parts)
1
2
Figure 8
Mainboard Bottom
Key Parts
1. CPU
2. Memory Slots
DDR4 SO-DIMM
Mainboard Overview - Bottom (Key Parts)
Introduction
1.Introduction
Mainboard Overview - Bottom (Key Parts) 1 - 9
Introduction
Figure 9
Mainboard Top
Connectors
1. DC-In Jack
2. HDMI-Out Port
3. USB 3.1 Gen 2
Type-A Port
4. USB 3.1 Gen 2
Type-C Port
5. Keyboard
Connector
11
1
2
3
4
5
1.Introduction
Mainboard Overview - Top (Connectors)
1 - 10 Mainboard Overview - Top (Connectors)
Mainboard Overview - Bottom (Connectors)
Figure 10
Mainboard Bottom
Connectors
1. DC Jack
2. CCD Cable
Connector
3. Fan Connector
4. Speaker Connecto
5. M.2 Card
Connector
6. CMOS Battery
Connector
7. WLAN/BT
Connector
8. Touchpad
Connector
9. FP Connector
10. Battery Connector
11. Combo Jack
12. LAN Board
Connector
13. HDD Cable
Connector
14. LCD Cable
Connector
1
2
3
7
8
4
6
9
14
11
10
5
12
13
Introduction
1.Introduction
Mainboard Overview - Bottom (Connectors) 1 - 11
1.Introduction
Introduction
1 - 12
Chapter 2: Disassembly
Information
Warning
Overview
This chapter provides step-by-step instructions for disassembling the NR40BU / NR41BU series notebook’s parts and
subsystems. When it comes to reassembly, reverse the procedures (unless otherwise indicated).
We suggest you completely review any procedure before you take the computer apart.
Disassembly
Procedures such as upgrading/replacing the RAM, optical device and hard disk are included in the User’s Manual but are
repeated here for your convenience.
To make the disassembly process easier each section may have a box in the page margin. Information contained under
the figure # will give a synopsis of the sequence of procedures involved in the disassembly procedure. A box with a
lists the relevant parts you will have after the disassembly process is complete. Note: The parts listed will be for the dis-
assembly procedure listed ONLY, and not any previous disassembly step(s) required. Refer to the part list for the previous disassembly procedure. The amount of screws you should be left with will be listed here also.
A box with a will also provide any possible helpful information. A box with a contains warnings.
An example of these types of boxes are shown in the sidebar.
2.Disassembly
Overview 2 - 1
Disassembly
2.Disassembly
NOTE: All disassembly procedures assume that the system is turned OFF, and disconnected from any power supply (the
battery is removed too).
Maintenance Tools
The following tools are recommended when working on the notebook PC:
• M3 Philips-head screwdriver
• M2.5 Philips-head screwdriver (magnetized)
• M2 Philips-head screwdriver
• Small flat-head screwdriver
• Pair of needle-nose pliers
• Anti-static wrist-strap
Connections
Connections within the computer are one of four types:
Locking collar sockets for ribbon connectors To release these connectors, use a small flat-head screwdriver to gently pry
the locking collar away from its base. When replacing the connection, make
sure the connector is oriented in the same way. The pin1 side is usually not
indicated.
2 - 2 Overview
Pressure sockets for multi-wire connectors To release this connector type, grasp it at its head and gently rock it from side
to side as you pull it out. Do not pull on the wires themselves. When replacing
the connection, do not try to force it. The socket only fits one way.
Pressure sockets for ribbon connectors To release these connectors, use a small pair of needle-nose pliers to gently
lift the connector away from its socket. When replacing the connection, make
sure the connector is oriented in the same way. The pin1 side is usually not
indicated.
Board-to-board or multi-pin sockets To separate the boards, gently rock them from side to side as you pull them
apart. If the connection is very tight, use a small flat-head screwdriver - use
just enough force to start.
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