Acer Projector K138ST User Manual

Acer Projector
K138ST/L224/LK-W16 Series
Users Guide 

Changes may be made periodically to the information in this publication without obligation 
to notify any person of such revisions or changes. Such changes will be incorporated in new 
editions of this manual or supplementary documents and publications. This company makes 
no representations or warranties, either expressed or implied, with respect to the contents 
hereof and specifically disclaims the implied warranties of merchantability or fitness for a 
particular purpose.
Record the model number,...

iii
Information for your safety and 
comfort
Read these instructions carefully. Keep this document for future reference. 
Follow all warnings and instructions marked on the product.
Turning the product off before cleaning
Unplug this product from the wall outlet before cleaning. Do not use liquid 
cleaners or aerosol cleaners. Use a damp cloth for cleaning.
Caution for plug as disconnecting device
Observe the following guidelines when connecting and disconnecting power to 
the external power supply...

iv
•
To avoid damage of internal components and to prevent battery leakage, 
do not place the product on a vibrating surface.
•Never use it under sporting, exercising, or any vibrating environment 
which will probably cause unexpected short current or damage rotor 
devices.
Using electrical power
•This product should be operated from the type of power indicated on the 
marking label. If you are not sure of the type of power available, consult 
your dealer or local power company.
•Do not allow anything to...

v
Product servicing
Do not attempt to service this product yourself, as opening or removing covers 
may expose you to dangerous voltage points or other risks. Refer all servicing to 
qualified service personnel.
Unplug this product from the wall outlet and refer servicing to qualified service 
personnel when:
•the power cord or plug is damaged, cut or frayed
•liquid was spilled into the product
•the product was exposed to rain or water
•the product has been dropped or the case has been damaged
•the...

vi
might cause fire or electric shock. In this case, unplug immediately and 
contact your dealer.
•Do not keep using this product to break or drop it. In this case contact your 
dealer for inspection.
•Do not face the projector lens to the sun. It can lead to fire.
•When switching the projector off, suggest to ensure the projector 
completes its cooling cycle before disconnecting power.
•Do not frequently turn off the main power abruptly or unplug the 
projector during operation. The best way is to wait...

vii
Disposal instructions
Do not throw this electronic device into the trash when discarding. To minimize 
pollution and ensure utmost protection of the global environment, please 
recycle. For more information on the Waste from Electrical and Electronics 
Equipment (WEEE) regulations, visit 
http://www.acer-group.com/public/Sustainability/sustainability01.htm 

   viii
First things first
Usage Notes
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.
Dont:
•Block the slots and openings on the unit provided for ventilation.
•Use abrasive cleaners, waxes or solvents to clean the unit.
•Use under the following conditions:
•In extremely hot, cold or humid environments.
•In areas susceptible to...

Information for your safety and comfort iii
First things first viii
Usage Notes viii
Precautions viii
Introduction 1
Product Features 1
Package Overview 2
Projector Overview 3
Projector Outlook 3
Control Panel 4
Remote Control Layout 5
MHL (Mobile High-Definition Link) Control 7
Getting Started 9
Connecting the Projector 9
Turning the Projector On/Off 10
Turning on the Projector 10
Turning the projector off 11
Adjusting the Projected Image 12
Adjusting the Height of Projected Image 12
How to optimize...

LED & Alarm Definition Listing 25
Specifications 26
Compatibility modes 27
Regulations and safety notices 31