Light Usage Time Information - BenQ CineHome I Series User Manual

Light usage time information

Getting to know the Light Usage Time
When the projector is in operation, the duration (in hours) of light usage is automatically calculated by
the built-in timer. The method of calculating the Light Usage Time is as follows:
1. Light Usage Time = (x+y+z+a) hours, if
Time used in Normal mode = x hours
Time used in Economic mode = y hours
Time used in SmartEco mode = z hours
Time used in Lamp Save mode = a hours
2. Equivalent Light Usage time =
A'
α × χ
--- -
= +
X
X= lamp life spec of Normal mode
Y= lamp life spec of Economic mode
Z= lamp life spec of SmartEco mode
A= lamp life spec of Lamp Save mode
A' is the longest lamp life spec among X, Y, Z, A
For time used in each Light 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 Usage time manually, it will probably have deviation from the value shown in
OSD menu since projector system calculates time used for each Light Mode in "Minutes" then rounds down to an
integer in hours shown in OSD.
To obtain the lamp hour information:
1. Go to SYSTEM SETUP: ADVANCED > Light Settings and press OK. The Light Settings
page appears.
2. Press to select Light Usage Timer and press OK. The Light Usage Time information is
displayed.
You can also get the lamp hour information on the INFORMATION menu.
Extending Light Usage Time
• Setting the Light Mode
Go to PICTURE > Advanced > Light Mode and press /
remote control to select a suitable lamp power from among the provided modes.
Setting the projector in Economic, SmartEco, or Lamp Save mode extends lamp life.
Lamp mode Description
Normal Provides full lamp brightness.
Economic Lowers brightness to extend the lamp life and decreases the fan noise.
Adjusts the lamp power automatically depending on the content brightness level while
SmartEco
optimizing display quality.
Adjusts the lamp power automatically depending on the content brightness level while
Lamp Save
offering a longer lamp life.
α
A' A' A'
× ×
y z
--- - --- - --- -
+ +
Y Z A
hours
×
a
, if
or press LIGHT MODE on the
Maintenance 37