Parts/Service for AT1921/22

Parts/Service for AT1921/22

Brand: Acer

Category: LCD Monitor

Document Type: Parts/Service

Language: EN

Uploaded: April 20, 2026, 8:07 p.m.

Warranty Information

No specific warranty period is mentioned in the provided pages.

The manual describes the operation of the Acer AT1921/22 monitor. It covers:

  • Front Panel Definition: Explains the function of each button on the front panel, including Power, Menu/Exit, CH Up/Down, Vol Left/Right, and Input/OK.
  • Remote Controller Key Definition: Details the function of each key on the remote control, such as POWER, Mute, SLEEP, Display, TV, SCART, AV, PC, number keys, Recall, Enter, directional keys, OK, Menu, Channel Up/Down, Volume Up/Down, MPX, INDEX, SUBTITLE, TELETEXT/MIX, and REVEAL.
  • OSD Tree: Provides a menu structure for picture and audio settings, detailing available options and their applicability to different input sources (ATV, S-Video, SCART, VGA, HDMI).

Troubleshooting and error codes

Symptom Possible Cause Solution
Screen may flicker during initial use. Nature of fluorescent light. Turn off the Power Switch and then turn it on again to make sure the flicker disappears.
Slightly uneven brightness depending on the desktop pattern. Nature of the LCD screen. This is normal and does not indicate a problem.
LCD screen has blemishes (missing pixel or pixel lit all the time). LCD screen characteristics. The LCD screen has effective pixels of 99.99% or more. Blemishes of 0.01% or less are within acceptable limits.
Afterimage of the previous screen remains after switching the image. Nature of the LCD screen. The screen recovered slowly by changing the image or turning off the Power Switch for hours.
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