LG 15Z90RT-G User manual

15Z90RT Series
www.lg.com
Copyright © 2023 LG Electronics Inc. All Rights Reserved
OWNER’S MANUAL
NOTEBOOK
For the safe and convenient use of the product, please read this owner’s manual before use.
MFL72012138

1Precautions before Product Use
ENGLISH
Precautions before Product Use
For the convenience of users, LG PC Manuals are provided in an electronic
format. LG PC User Manual in the Various functions menu of LG Quick Guide
to run it. For more information on how to use the product, refer to the
LG Easy Guide of the LG PC Manuals.
The images in the owner’s manual may differ depending on the language
selected and are subject to change without prior notice.
Any malfunction in the built-in solid state drive (SSD) may result in loss of
stored data. You must back up all critical user data to an external storage
device (USB HDD, memory card, etc.).
If you shut the system down before it is completely loaded, the product may
not shut down properly. Shut down the system after it is completely loaded.
(It takes about one or two minutes to completely load the system and may
vary depending on the conditions.)
The screen and menu configurations may differ from this manual depending
on the status of the Windows and software updates. Also, the version of
Windows may differ depending on the model.
Contents
Precautions before Product Use ................................................ 1
Checking the Components ........................................................... 2
Product Tour.................................................................................... 2
Connecting LAN Adapter ............................................................. 3
Power Connection.......................................................................... 3
System Shutdown / Power Off ................................................... 4
Important Safety Precautions..................................................... 4
Pre-Tech Support Checklist......................................................... 5
Appendix........................................................................................... 7
Registered Trademark and Open Source Information......................................................................7

2Checking the Components
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Checking the Components
The components shown below are provided when you purchase the product.
Check the components before use.
• Some of its components may look different in shape and color from the pictures
in certain models.
• When cleaning the product, use a cleaning agent dedicated to the PC. If you use
thinner, benzene, alcohol or other similar agent, the product may be damaged or
deformed.
PC Main Body
Owner’s Manual AC Adapter 1Power Cable 1
HDMI Adapter LAN Adaptor 2
(optional)
1 The AC adapter and power cable may differ depending on your country, but there is
no difference in their functionality.
2 The recommended network cable for the optimal network environment is CAT5 or
higher.
Product Tour
The actual product may differ in shape and color from the product images
included in this owner’s manual.
Front



   

IR LED

Keyboard

Webcam Touchpad
Webcam Operation Status Lamp Power Button [ ]
Built-in Microphone
NOTE
• You can use hot keys to use Windows more conveniently.
For details, refer to the LG Easy Guide of the LG PC Manuals.

3Connecting LAN Adapter
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Connecting LAN Adapter
1 Connect the LAN adapter to the USB-C™ port on the PC.
• The USB-C™ port can be used without having to
differentiate between the top and bottom sides.
• The USB-C™ port on the right side of the PC can
also be connected to the LAN adapter.
2 Connect the network cable (LAN) to the LAN adapter.
3 Check if you can connect to the internet properly.
Power Connection
The AC adapter is used to power and charge the PC.
• Do not use any other AC adapter than the one that was provided when you
purchased this product.
• The power cable and AC adapter may differ depending on your country or region.
1 Connect an end of the cable to the AC adapter
and the other end to a power outlet.
• The AC adapter can be used from 100 V to 240 V.
2 Connect the AC adapter jack to the PC USB-C™ port.
• Ensure that the power jack linked to the
AC adapter and product is connected firmly.
• The USB-C™ port on the right side of the PC can
also be connected to the power cable.
Left


Right
 

USB-C™ Port 1
(USB 4.0 Gen 3x2 / Thunderbolt™ /
Can connect to a LAN adapter /
HDMI Connectable Port / Power Port)
Built-in Speakers
1 Depending on the specifications of the device connected to the USB-C™ port, it
acts as a USB or Thunderbolt™ port. The Thunderbolt™ device is only supported in
the USB-C™ port mounted on the left side of the PC.
The USB-C™ port provides Quick Charging and Always-On Charging functions for
devices that support USB PD (Power Delivery).
2 The 4-pole ear microphone port supports US type 4-pole standards and the
European 4-pole ear microphone may not work properly.
When using ear microphone (or Bluetooth headset), audio input and output are
directed to the connected device and the microphone and speaker on PC do not work.
The 4-pole ear microphone port does not support external microphone.
3 The name of the USB version has been changed from USB 3.1 (or USB 3.1 Gen 2)
to USB 3.2 Gen 2x1. Devices that are not authorized with USB may not operate
normally when connected to the USB port.
The transmission speed of a USB port may differ depending on the type of storage
device (NVMe™, SSD, HDD, etc.) in the system and the connected USB device.

Headphone Port
(4-pole Ear Microphone Port 2)

USB-C™ Port 1
(USB 3.2 Gen 2x1 3/ Can connect to
a LAN adapter / HDMI Connectable
Port / Power Port)

4System Shutdown / Power Off
ENGLISH
When the AC adapter is connected, the AC adapter lamp turns on.
Status Power Lamp
On When the AC adapter is connected and charging is complete.
Blinking When the AC adapter is connected and is charging.
Off The AC adapter is not connected.
• If you try to turn on the system that has entered the Hibernates mode or been
turned off after a low-battery alarm, the system will not be turned on but the
lamp will blink three times. If this is the case, connect the AC adapter and charge
the battery sufficiently before using it.
System Shutdown / Power Off
Press the [ ] key or [Ctrl] + [ESC] to display the Start menu.
-Press the Start button [ ] > Power button [ ] and select [Shut down].
Important Safety Precautions
Check the following ‘Important Safety Precautions’ to prevent unexpected
danger or damage in advance.
‘Important Safety Precautions’ is divided into ‘WARNING’ and ‘CAUTION.’
!
WARNING: Noncompliance with the instruction may cause serious
physical damage or fatal injuries.
!
CAUTION: Noncompliance with the instruction may cause minor damage
to the body or the machine.
While Using the Product
!
WARNING
Use batteries certified and
acknowledged by
LG Electronics Inc.
• Otherwise, an explosion
or fire may occur.
Keep the battery away from
heat.
• Otherwise, an explosion
or fire may occur.
Avoid storing or using this
product in places with
high humidity levels and
temperatures above 60 °C,
such as the inside of a car or
sauna.
• Otherwise, an explosion
or fire may occur.
If you find leakage or smell
bad odor from the battery,
contact the local service
center.
• Otherwise, an explosion
or fire may occur.
Do not use the product on
top of carpet, blanket or bed.
Also, do not put the adapter
under the blanket.
• The product may
malfunction, cause a fire
or burn the user due to
temperature rise.
Prevent the battery from
coming in contact with any
metallic object like a car
ignition key or a paper clip.
• Otherwise, this may cause
damage to the battery,
a fire or burn due to
overheat in the battery.
Do not leave the powered on
product in a space without
enough ventilation (i.e. bags)
repeatedly or for an extended
time.
• The battery may overheat
and cause a fire.
Charge the battery only with
the provided charger.
• Otherwise, the battery
may be damaged
presenting a risk of fire.
Do not bend the power cable connected
to the AC adapter too much.
• Otherwise, the wires inside the cable
may break and cause an electric shock
or fire.

5Pre-Tech Support Checklist
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Pre-Tech Support Checklist
Troubleshooting
If the following symptoms appear while using the product, check again.
It may not be a malfunction.
Symptom Cause and Solution
Some of the
Windows functions
do not work
normally or are not
supported.
• Depending on the product, some of the Windows
functions may not be supported, and you may need
to purchase a separate hardware, driver, or software
to use the functions. Also, you may need to update
the BIOS additionally. The Auto Update function of
Windows is always activated. Updating Windows
may incur Internet usage fees as well as additional
system requirements for the storage device or the
hardware. For more information, refer to the website
https://www.microsoft.com.
Part of LG Software
is not installed.
• The UWP app provided by LG Electronics can be
installed only through the Microsoft Store. Access
Microsoft Store and search for the app to install it.
For more information on the app, refer to
LG Easy Guide of the LG PC Manuals.
Guide on Battery Usage
When the PC is not used for
an extended period of time,
keep the battery level at
about 50 % to increase the
battery lifespan.
Use the Extend Battery Life
function in the LG Smart
Assistant. You can limit
the battery charge to 80 %
of the maximum charging
capacity to increase the
battery lifespan.
To increase battery lifespan,
use the battery for a while
before charging it rather
than keeping the battery
completely charged.
If you don't use the product
for a long time with the
battery completely charged,
the battery lifespan may
decrease.
NOTE
• This product has a built-in battery pack. After purchasing your PC, be sure to
charge the battery pack completely before using it for the first time.
- The battery is a wearable good and thus the battery may not last as long as
before after the battery has been used for a long time.
- The internal battery cannot arbitrarily be removed or replaced. Removing it may
void the warranty.
- If you need to remove or replace the battery, visit a designated service center.
- We charge a fee for removing or replacing the battery.

6Pre-Tech Support Checklist
ENGLISH
Symptom Cause and Solution
The screen color
does not display
properly.
• Check if Reader Mode is on.
When the Reader mode is on, turn the setting off.
-Press the Start button [ ] to turn the [All apps]
> [LG Smart Assistant] > [Display Setting] >
[Reader Mode] settings off.
• Using the Reader mode and the Night mode at
the same time can cause color distortion. Turn the
Reader mode settings off or change the Night mode
to [Off].
-Turning off Night light: Press the Start button
[ ] and select Settings [ ] > [System] >
[Display] > [Night light] > [Off].
• If the screen still does not properly display, contact
the LG Electronics service center.
-Reader mode controls the brightness and color
of the LCD screen to look like printed paper and
protect the user from eyestrain.
The power does not
turn on.
• Check if the power cord is connected.
• After disconnecting the power cord and reconnecting
it, press the power button of the product.
• If the power is not on after reconnecting the power
cord, remove the adapter and hold the power button
for at least 6 seconds to reset the system. Once the
system is reset, press the power button again to
turn on the computer.
Symptom Cause and Solution
The system stops
during use or does
not properly turn
off.
• Remove the adapter and press the power button for
approximately 6 seconds to reset the system. Once
the system is reset, press the power button again to
turn on the computer.
-Caution: Unsaved data may be lost. Pressing the
power button while the PC is in use may cause
damage to the hard disk or a system error.
The touchpad is
not functioning
properly.
• Press the Start button [ ] and run [All apps] >
[LG Smart Assistant]. Then press [Dashboard] >
[Touchpad].
• If the touchpad does not function properly, the
touchpad is either in the Touchpad Off (disabled)
state or Touchpad Auto (disabled when the mouse is
connected) state.
-For details on the touchpad settings, refer to the
LG Easy Guide of the LG PC Manuals.
You selected the
wrong display
language for
Windows.
• Refer to [Recovering the System] in LG Easy Guide
of the LG PC Manuals to initialize the PC and set the
language again.
• All data will be lost during the initialization, so you
must back up all critical data in advance.
The wireless
network is not
connected.
• Press [Fn] + [F6] to check if the wireless network
device is turned off.
-Press [Fn] + [F6] to set airplane mode to [OFF].
Click the Wi-Fi [ ] icon on the right side of the
taskbar and check if AP displays properly.
• Every time you press [Fn] + [F6], the wireless
network and airplane mode turns on or off.
• You may not be able to connect to a secure wireless
network. Ask the wireless network administrator.
• Reinstall the wireless LAN driver.

7Appendix
ENGLISH
Symptom Cause and Solution
A certain site or
program does not
run.
• Press the Start button [ ] and then select
[All apps] > [Windows Tools] > [Control Panel].
• Select [View by] > [Small icons] > [User Accounts] >
[Change User Account Control settings] >
[Never notify] > [OK].
-LG Electronics and Microsoft recommend using
User Account Control.
I want to reinstall
the driver. • Press the Start button [ ] and then select
Settings [ ] > [Apps] > [Installed apps].
Then remove the driver to be reinstalled.
• Press the Start button [ ], select and run
[All apps] > [LG Update & Recovery (or LG Update)].
Then, use the [Required Updates] or [Update list]
menu to reinstall the drivers.
-For some models without the Recovery function,
only the LG Update function is provided.
An error message
appears.
• Check if the system is infected with a virus or a
malicious code.
Appendix
Registered Trademark and Open Source Information
Microsoft™, MS™, WinPE™, and Windows® are the registered trademarks of
Microsoft Corporation™.
USB Type-C™ and USB-C™ are trademarks of USB Implementers forum.
Intel® and Intel® logo, Intel® Core™, Thunderbolt™ and Thunderbolt™ logo,
Intel® Unison™ and Intel® Unison™ logo are trademarks or registered
trademarks of Intel and/or subsidiaries in the United States and/or other
countries.
microSD® and the microSD logo are trademarks or registered trademarks of
SD-3C, LLC.
Wi-Fi® is a registered trademark of Wi-Fi Alliance Corporation.
The terms HDMI, HDMI High-Definition Multimedia
Interface, HDMI Trade Dress and the HDMI Logos
are trademarks or registered trademarks of HDMI
Licensing Administrator, Inc.
To obtain the source code that is contained in this product, under GPL, LGPL,
MPL, and other open source licenses that have the obligation to disclose
source code, and to access all referred license terms, copyright notices and
other relevant documents please visithttps://opensource.lge.com.
LG Electronics will also provide open source code to you on CD-ROM for a
charge covering the cost of performing such distribution (such as the cost of
media, shipping, and handling) upon email request to[email protected].
This offer is valid to anyone in receipt of this information for a period of three
yearsafter our last shipment of this product.

8Appendix
ENGLISH
Australia/New Zealand Notice
Exposure to radio frequency energy
Radio wave exposure and Specific Absorption Rate (SAR) information
This product has been designed to comply with applicable safety requirements
for exposure to radio waves. These requirements are based on scientific
guidelines that include safety margins designed to assure the safety of all
persons, regardless of age and health
• The equipment complies with the RF Exposure Requirement 1999/519/EC,
Council Recommendation of 12 July 1999 on the limitation of exposure of the
general public to electromagnetic fields from 0 Hz to 300 GHz.
• The SAR limit recommended by the International Commission on Non-Ionizing
Radiation Protection (ICNIRP) is 2 W/kg averaged over 10g of tissue.
• The highest SAR value for this model on the body is less than 2W/kg (10g)
RF Radiation Exposure Statement
The use of the 5,150 - 5,350 MHz and 5,945 - 6,425 MHz band (if applicable)
is restricted to indoor use only. This restriction exists in the countries Australia
(AU) and New Zealand (NZ). (For Wi-Fi/Bluetooth built-in model or Wi-Fi built-
in model)

MFL72012138