Brand: Acer
Category: Other
Document Type: Manual
Language: EN
Manual for X128H
Uploaded: April 20, 2026, 8:09 p.m.
Manual Publish Date: 2020-04-01
Warranty Information
Please refer to the Declaration of Conformity for warranty information.
Do:
- Turn off the product before cleaning.
- Use a soft cloth moistened with mild detergent to clean the display housing.
- Disconnect the power plug from AC outlet if the product is not being used for a long period of time.
- Block the slots and openings on the unit provided for ventilation.
- Use abrasive cleaners, waxes or solvents to clean the unit.
- In extremely hot, cold or humid environments.
- In areas susceptible to excessive dust and dirt.
- Near any appliance that generates a strong magnetic field.
- Place In direct sunlight.
Troubleshooting and error codes
| # | Icon | Function | Description |
|---|---|---|---|
| 1 | POWER | POWER | Power Indicator LED |
| 2 | LAMP | LAMP | Lamp Indicator LED |
| 3 | TEMP | TEMP | Temp Indicator LED |
| 4 | POWER | POWER | See the contents in "Turning the Projector On/Off" section. |
| 5 | Four directional select keys | Use ▲▼◄► to select items or make adjustments to your selection. | |
| 6 | BACK | BACK | Returns to the previous operation. |
| 7 | SOURCE | SOURCE | Changes the active source. |
| 8 | ENTER | ENTER | Confirm your selection of items. |
| 9 | KEYSTONE | Adjusts the image to compensate for distortion caused by tilting the projector. | |
| 10 | MENU | MENU | Press "MENU" to launch the Onscreen display (OSD) menu or exit the OSD menu. |