Lenovo L28u-35 User manual

Lenovo
L28u-35
User Guide

Product No.
H22280UL0
66EC-GAC4-WW
Version 1 (November 2021)
All rights reserved Lenovo 2021
LENOVO products, data, computer software, and services are developed on earmarked funds and are sold to
government agencies as commodities as defined in 48 C.F.R. 2.101, with limited restricted rights of use,
duplication, and disclosure granted to the government agencies.
Restricted limited rights statement: If products, data, computer software, or services are delivered under a
General Services Manager "GSA" contract, their use, duplication, or disclosure is subject to the restrictions
outlined in Contract No. GS-35F-05925.

iv
Contents
Safety Matters…………………………………………………………………………….……...ⅲ
General Safety Principles…………………………………….………………………….…….…ⅲ
TCO Certified……………………………………………………………………………………..v
Chapter 1. Getting Started …………………………………………………………….…..…1-1
Items List…………………………………………………………………………..…….….….1-1
Precautions For Use………………………………………………………………………….…1-2
Product Overview…………………………………………………………………..……….….1-3
Adjustment Types………………………………………………………………..……….….1-3
Tilt…………………………………………………………………..………………….…….1-3
Height Adjustment…………………………………………………………………..……….1-3
Rotation…………………………………………………………………...………………….1-4
Rotate……………………………………………………………………………..………….1-4
Display Control…………………………………………………………….……..………….1-5
Cable Lock Slot…………………………………………………………….……..………….1-5
Set Up the Display …………………………………………………………………..………….1-6
Connecting and Powering on the Display……………………………………..…..………….1-6
Chapter 2. Adjusting and Using the Display…………………………………………………2-1
Comfort and Assistance Functions……………………………………………………….……..2-1
Arrange Your Working Area………………………………………………….…………...2-1
Placing the Display………………………………………………………..…………….…2-1
Tips on Healthy Work Habits…………………………………………………….…..……2-2
Adjusting the Display Image………………………………………………………..…….…….2-3
Using Direct Access Controls ………………………………………………….…….…….2-3
Using the On-Screen Display (OSD) Control ………………………………………….….2-4
Select Supported Display Modes……………………………………………….……….…2-6
Understanding Power Management…………………………………………………….………2-7
Power Management Mode…………………………………………………….……….…….…2-7
Maintaining the Display…………………………………………………….….…………….…2-8
Remove the Display Base and Support Arm…………………………….……..………….……2-8
Wall-mounted (optional)…………………………………………………….……..…….…..…2-8
Chapter 3. Reference Information…………………………………………………….………3-1
Display Specifications……………………………………..…………….………….………3-1
Troubleshooting……………………………………………………………………….…….3-3
Manually Install the Driver for the Display……………………………………........…..…3-5
Installing the display driver in Windows 7 …………………………………….……..….3-5
Installing the display driver in Windows 10 ………………………………………......…3-6
Get further help…………………………………………………………………….…..…3-6
Appendix A. Services and Support………………………………..……………………..……A-1
Register Your Option………………………………………………..……………………..……A-1
Online Technical Support………………………….………………………………………..…..A-1
Telephone Technical Support…………………………………………………………….…..…A-1
Appendix B. Declaration………………………………………………………………………B-1
Recycling Information………………………………..…………………………………………B-2
Trademark…………………………………………………………………………..……………B-2
Power Cord and Power Adapter…………………………………………………………………B-3
Contents

Safety Matters
General Safety Principles
For tips on safe computer use, please go to:
http://www.lenovo.com/safety
Before installing this product, please read the safety matters.
Danger
To avoid collision dangers：
• Do not remove the cover.
• Do not use the product without the base installed.
• Do not connect or disconnect the product during thunderstorm conditions.
• The power cord plug must be connected to a properly wired and grounded electrical
outlet.
• Any equipment connected to this product must also be connected to a properly
wired and grounded electrical outlet.
• When disconnecting the display, the plug must be unplugged from the power outlet.
The power outlet should be easy to plug and unplug the power cord. To take special
precautions against dangers when using, installing, servicing, transporting, or storing
the equipment, prepare the necessary instructional notes.
To reduce the risk of electric shock, do not perform any maintenance not described in
the operating instructions unless you are qualified to do so.
Handling:
• If the display weighs more than 18 kg (39.68 lbs.), it is recommended that two
people move or lift the display.
ⅲ

Chapter 1. New Member Guide
This user guide provides users with detailed operating instructions. For a quick
overview of the instructions, please refer to the Setup coloring page for brief
information.
Items List
The following items should be included in the package of this product:
■Quick Start Guide
■Display
■Stand（Screw *4）
■Base
■Power Cord（Subject to the actual）
■Signal Line
Chapter 1 1-1

Precautions For Use
To set up your display, please refer to the following illustration.
Note: Do not touch the screen area of the display. The screen area is a glass product
and can be easily damaged by friction or pressure.
1. Place the display screen down on a soft flat surface.
2. Align the base with the stand, and then tighten the screws on the base.
3. Align the installed stand base to the back of the display and tighten the screws.
Note: To install the VESA mount, see "Wall-mounted (optional)" on pages 2-9.
Chapter 1 1-2

Product Overview
This section describes how to adjust the display position, set the user controls, and use
the cable lock slot.
Adjustment Types
Tilt
Height
Adjustment
See the figure below for an example of the tilt range.
Chapter 1 1-3

Rotate
Before the display is displayed in a vertical orientation, it should be fully raised
and fully tilted to avoid collisions.
Rotation
With the built-in base, you can tilt and rotate the monitor for the best viewing
angle.
Chapter 1 1-4
Vertical
Rotation 90°
Horizontal
Rotation 360°

Display Control
Different functions can be used through the key controls on the panel frame.
For information on how to use these key controls, see "Adjusting the Display
Image" on pages 2-3.
Cable Lock Slot
The back of the display with a small and large cable lock slot.
Chapter 1 1-5

Set Up the Display
This section describes how to set up the display.
Connecting and Powering on the Display
Note: Before performing this procedure, be sure to read the "Safety Matters" on
page ⅲ.
1. Turn off the power to the computer and all connected devices, and then
unplug the computer's power cord.
2. Connect the cables as shown in the figure below.
3. For computers with HDMI connections.
Note: Lenovo recommends that users who need to use the HDMI input on their
display purchase the "Lenovo HDMI to HDMI Cable OB47070"
www.lenovo.com/support/monitoraccessories
Chapter 1 1-6

4. For computers with DP connections.
5. Connect the audio cable of the speaker and the audio jack of the monitor to
transmit the audio source from HDMI or DP.
Note: HDMI or DP mode audio output.
Chapter 1 1-7

6. Plug the power cord into the display, and then plug the display power cord
and computer cord into a grounded power outlet.
Note: A certified power cord must be used for this equipment. The installation
and/o r equipment regulations of the country concerned should be taken into
account. The certified power cable used should not be lighter than the normal
PVC cable (marked H05VV-F 3G 0.75mm2or H05VVH2-F2 3G 0.75mm2) as
specified in IEC 60227. In addition, synthetic rubber cords as specified in IEC
60245 (marked H05RR-F 3G 0.75mm2) should be used.
7. Use wire clips when connecting cables.
Chapter 1 1-8

8. Turn on the power to the display and computer.
9. When you install the monitor driver, you should download it from the
Lenovo website
http://support.lenovo.com/docs/L28u-35
Download the driver that corresponds to your display model. Please refer to
the "Manually Install the Driver for the Display" section on pages 3-5.
Chapter 1 1-9

Chapter 2. Adjusting and Using the Display
This section describes how to adjust and use this display.
Comfort and Assistance Functions
Good ergonomic designs are important for the comfortable use of your personal
computer. Your workplace and the equipment you use should be arranged
appropriately for your personal needs and the type of work you do. In addition,
healthy work habits can help you achieve optimal efficiency and comfort when
using a computer.
For information on these topics, please visit the Healthy Computing Web:
http://www.lenovo.com/healthycomputing/
Arrange Your Working Area
Use a work surface of the right height and enough work area so that you can work
comfortably.
Arrange your work area according to the way you use materials and equipment.
Keep frequently used materials neatly organized in your work area, and place
frequently used items (such as a computer mouse or telephone) in an easily
accessible location. The placement and setup of equipment are very important to
your work posture. The following topics describe how to optimize equipment
settings to achieve and maintain a good working posture.
Placing and Viewing the Display
For comfortable viewing of the display, the following factors should be
considered when placing and adjusting computer displays:
The recommended viewing distance between your eyes and the display
screen is 1.5X the screen diagonal. Solutions to meet this required
distance in a small office include: keeping the desk a certain distance from
the wall or partition to allow space for the display, using a flat panel or
smaller display and keeping the display in the corner of the desk, or
placing the keyboard in an adjustable drawer board to create a deeper
work surface.
Display Height: Place the display with your head and neck in a natural,
comfortable (vertical or upright) position. If your display is not height-
adjustable, you can place a book or other sturdy object under the base of
the display to achieve the desired height. The general rule is to sit
comfortably with the top of the display screen at eye level or slightly
lower. However, it is important to optimize the height of the display so
that the relative position between the eyes and the center of the display
provides the right visual distance and a comfortable viewing experience
when the eye muscles are relaxed.
Tilt: Adjusting the tilt of your display optimizes the appearance of your
screen content and keeps your head and neck in the best possible position.
Regular Location: Place the display in such a way that overhead lighting
or nearby windows do not cause glare or reflection on the screen.
Chapter 2 2-1

Here are some additional tips for comfortable viewing of your display：
• Use adequate lighting for the type of work you do.
• Use display brightness, contrast, and image controls (if available) to optimize the
image on the screen for your visual needs.
• Keep the display screen clean so that you can see the content clearly.
Long periods of focused visual activity tend to strain the eyes. Be sure to
periodically move away from the display screen and gaze at a distant object to
relax your eye muscles. If you have any questions about eye strain or visual
discomfort, consult vision care professional for advice.
Tips on Healthy Work Habits
The following is a summary of some important factors that are useful to keep you
comfortable and productive while using your computer.
Good posture comes from equipment placement: The layout of your
work area and the placement of your computer equipment can have a
significant impact on your posture while using the computer. Be sure to
follow the tips listed in " Arrange Your Working Area" on pages 2-1 to
optimize the placement and orientation of your equipment so you can
maintain comfortable posture and efficiency. In addition, be sure to use the
adjustment features of your computer components and office furniture to
meet your needs, and adjust them over time as your needs change.
Slight changes in posture help keep you comfortable: the longer you sit
in front of a computer, the more important it becomes to pay attention to
your work posture. Avoid maintaining one posture for long periods.
Regular slight changes in posture can help prevent possible discomfort.
Use the adjustment function provided by office furniture or equipment to
adapt to changes in posture.
Regular short breaks help ensure healthy computing: Because
computing is primarily a static activity, it is especially important to take
short breaks during the workday. Take regular breaks to stand in front of
your work area, stretch your limbs, walk around or have a drink, or
otherwise take a short break from using the computer. Taking short breaks
during work allows for changes in body posture that can help you stay
comfortable and productive while working.
Chapter 2 2-2

Adjusting the Display Image
This section describes the functions of the user controls used to adjust the display
image.
Using Direct Access Controls
When On Screen Display (OSD) is not displayed, you can use direct access
controls.
Icon
Control
Description
1
Power
Power on/off
2
Menu
To access the OSD menu
Press to confirm the selection
Press and hold for 10 seconds to lock the menu/unlock the
menu
Enter
Press to go to the next level/submenu status of the main
menu, or the previous level of the adjustment bar
3
Enable low blue light
Press and hold for 3 seconds to enable low blue light
Disable low Blue light
Press and hold for 3 seconds to disable low blue light
Brightness
Brightness adjustment
Up/Right/
Increase
Downward Browsing Key
Increase the value on the adjustment bar/Adjustment
Press down to move to the next item
4
Volume
Adjust the volume level
Down/Left/
Decrease
Upward Browsing Key
Decrease the value on the adjustment bar/Adjustment
Press down to move to the previous item
5
Input source
Signal source switching
Return to previous level in OSD mode
DDC-CI
Press and hold for 10 seconds to enable/disable the DDC-CI
function.
Exit
Exit Menu
Attention:
The L28u-35 uses natural low blue light technology to protect your eyes by not only maintaining picture
quality but also reducing harmful blue light at 6500K color temperature. If you cannot confirm whether the
monitor is already in low blue light mode, you can perform the Restore Factory Settings operation in the
OSD Item Menu Settings → Reset All Settings.
Chapter 2 2-3

Use the On-Screen Display (OSD) Control
When adjusting the settings, you can view the user controls through the OSD.
Use controls:
1. Press to open the OSD Main Menu.
2. Use or to move between icons. Select an icon and press to access the
feature. If there is a submenu, use or to move between options, and then press
to select the feature. Use or to make adjustments, and then press to save.
3. Press to exit the submenu in sequence, and then exit the OSD.
4. Press and hold for 10 seconds to lock the OSD. In this way, you can prevent
accidental adjustment of the OSD. Press and hold for 10 seconds to unlock the OSD
for OSD adjustment.
5. DDC/CI is enabled by default. Press and hold for 10 seconds to disable/enable
the DDC/CI function. The message "DDC/CI disable (DDC/CI enable)" is displayed on
the screen.
6. The ENERGY STAR option restores all user settings to their default values to make
the display Energy Star compliant.
ENERGY STAR is a consumer electronics energy efficiency program led by the U.S.
government. It was launched at the Department of Energy to reduce energy consumption
and greenhouse gas emissions. The ENERGY STAR logo is a symbol of energy
efficiency and environmental protection. It has improved the concept of energy
efficiency among consumers and manufacturers, and effectively guided the market. The
“ENERGY STAR Regulations” improve energy efficiency and reduce air pollution
through the use of more energy-efficient equipment in homes, offices, and factories. One
way to achieve this goal is to use management to reduce energy consumption when
products are not in use. The default settings of the monitor are ENERGY STAR
qualified. Any changes made by the user to more features and functions can increase
power consumption, which would exceed the limits of the ENERGY STAR standard. If
the user changes options related to energy efficiency while in use, such as brightness,
color mode, etc., selecting Reset Factory All or selecting the ENERGY STAR option
will restore energy consumption to ENERGY STAR-compliant energy efficiency.
For more information, see (www.enercystar.gov/products). All ENERGY STAR
products will be posted online and directly accessible to governments, public agencies,
and consumers.
Chapter 2 2-4

Table 2-1. OSD Functions
Main Menu
Submenu
Description
Controls and Adjustment
Basic settings
Brightness Adjustment
Adjust the overall brightness of
the screen
Contrast Adjustment
Adjusts the degree of difference
between bright and dark areas
Dynamic Contrast
On/Off
Display Mode
Standard
Games
Web Browsing
Movies
Pictures
Zoom mode
Wide
Off
Non-16:9 signal adjustable
Dynamic Response
Off
Normal
Extremely
Volume
Adjust the volume level
Color Setting
Cool color temperature
/
Standard color temperature
/
Warm color temperature
/
User
Red
Green
Blue
sRGB
6500K
Port Settings
Input
Automatic input switching
DP
HDMI1
HDMI2
DP Select
DP1.1/DP1.2/DP1.4
Optional under the DP
channel
Free Sync
Auto/off
HDR High Dynamic Contrast
Ratio
On/Off
When it is turned ON for the
first time, there will be:
Power Usage “Changing this
setting will increase power
usage”.
Menu Settings
Information
Product Name
Refresh Rate
Software Version
Serial Number
Language
OSD Language Selection
Menu Horizontal Position
Move SOD left and right
Menu Vertical Position
Move OSD up and down
Transparency
Adjust OSD menu transparency
OSD Display Time Setting
5-60
Reset All Settings
Cancel
Restore Factory Settings
Chapter 2 2-5