Unable to adjust the screen brightness

Applicable products: HUAWEI Display 23.8"
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Unable to adjust the screen brightness

Problem

The screen brightness cannot be adjusted.

Cause

  1. Incorrect operations were performed on the OSD menu bar.
  2. The button does not work.

Solution

Follow the on-screen display (OSD) instructions. Press either the , , , or button to enter the monitor settings menu and set the brightness, colour temperature, and other parameters.

Functions of , , , and are as follows:

Exit/Back

Downward/Leftward adjustment

Upward/Rightward adjustment

Confirm

If you have modified a setting and then exited the current menu or entered another menu, do not forget to press the Confirm button to save your setting.

Menu description:

SN

Main menu item

Sub-menu item

Trigger description

Adjustment range

Initial value

1

Brightness

Brightness

Adjust the screen display brightness.

0-100

80

Contrast

Adjust the screen contrast.

0-100

85

DCR

Indicate dynamic contrast.

Enable/Disable

Disabled

2

Input

VGA

VGA

You can select only one signal source.

Automatic

HDMI

HDMI

3

Colour temperature

Cool

Add blue to the screen image.

You can select only one colour temperature.

Standard

Neutral

Add green to the screen image.

Standard

The colour temperature of the screen is standard.

Low blue light

The monitor enters Low blue light mode.

Custom

Manually adjust the red, green, and blue temperatures.

4

Display

Horizontal position

Adjust the horizontal position of the screen.

0-100

50

Vertical position

Adjust the vertical position of the screen.

0-100

50

Clock

Adjust the time.

0-100

50

Phase

Adjust the phase.

0-100

N/A

The horizontal position, vertical position, clock, and phase are only displayed when the monitor is connected to a tower through the VGA port.

SN

Main menu item

Sub-menu item

Trigger description

Adjustment range

Initial value

4

Display

Auto-adjust

The screen display adjusts automatically.

On/Off

On

Sharpness

Adjust the screen sharpness.

Level 1/Level 2/Level 3

Initial value (see next row)

1. When the dominant frequency is used, the anti-grey function cannot be selected and the bypass effect (highest priority) is used.

2. When the monitor is in Text mode with high resolution, Level 3 is set by default and can be adjusted by users. When in Text mode with low resolution, Level 2 is set by default and can be adjusted by users.

3. When the monitor is in a non-Text mode, Level 1 is set by default and can be adjusted by users.

Display mode

Adjust the display mode.

Full screen/Original

Full screen

Overdrive

Shorten the screen response time.

Off/Normal/Extreme

Initial value (see next row)

1. In Text or Game mode, Normal is set by default and can be adjusted by users. 2. In other modes, this function is turned off by default and can be adjusted by users.

5

VisionMode

Normal

The monitor enters Normal mode.

You can select only one mode.

Normal

sRGB

The brightness is adjustable, but the contrast is not adjustable.

Game

The monitor enters Game mode.

Text

The monitor enters Text mode.

Movie

The monitor enters Movie mode.

6

Setup

Language

Select a language for the menu.

English/Simplified Chinese

English

OSD transparency

Adjust the menu transparency.

Off/20%/60%/80%

Off

About

Indicate device model/resolution/version information about the monitor.

Factory reset

Restore the monitor to its factory settings.

On/Off

On

If there is no response after you press a button, prepare the invoice, check the device SN, and call Huawei customer service hotline to check whether you have the right to use on-site support services. If you have the right to use our on-site support services, Huawei Customer Service Centre will assign professional engineers to inspect your device. If you do not have the right to use the on-site support services, you can pay to use the services. Alternatively, you can back up important data and bring your device and proof of purchase to an authorised Huawei Customer Service Centre for assistance.

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