Light Source Information - BenQ W1140 User Manual

Light source information

Getting to know the light hour
When the projector is in operation, the duration (in hours) of light source usage is automatically
calculated by the built-in timer. The method of calculating the equivalent light hour is as follows:
1. Light Usage Time = (x+y1+y2+z) hours, if
Time used in Normal mode = x hours
Time used in ECO 1 mode = y1 hours
Time used in ECO 2 mode = y2 hours
Time used in SmartEco mode = z hours
2. Equivalent Light Hour =
A'
  
--- -
= +
X
X= light source life spec of Normal mode
Y1= light source spec of ECO 1 mode (Bright mode)
Y2= light source spec of ECO 2 mode (Other modes)
Z= light source spec of SmartEco mode
A' is the longest light life spec among X, Y1, Y2, Z.
For time used in each light source mode shown in OSD menu:
• Time used is accumulated and rounded down to an integer in hours.
• When time used is less than 1 hour, it shows 0 hours.
When you calculate Equivalent Light Hours manually, it will probably have deviation from the value shown in
OSD menu since projector system calculates time used for each light source mode in "Minutes" then rounds down
to an integer in hours shown in OSD.
To obtain the light source information:
Go to Advanced Menu - System > Light Source Information and press OK. The Light Source
Information page appears.
You can also get the light hour information on the Information menu.
Extending light source life
• Setting the Light Source Mode
Go to Advanced Menu - Picture > Advanced Color Settings > Light Source Mode and press
/ to select a suitable light source power from among the provided modes.
Setting the projector in ECO, or
Light Source
Mode
Normal
ECO
SmartEco

hours
A' A'
 
----- - ----- -
+
y1 y2
Y1 Y2
SmartEco
Provides full light brightness
Lowers brightness to extend the light life and decreases the fan noise
Adjusts the light power automatically depending on the content brightness level while
optimizing display quality.
A'

--- -
+
z
, if
Z
mode extends light life.
Descriptions
Maintenance 43