38 Maintenance
2.
Equivalent Light Usage
time = hours
, if
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
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 / or press
LIGHT MODE
on the
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.
• Setting
Auto Off
This function allows the projector to turn off automatically if no input signal is detected after a set
period of time to prevent unnecessary waste of lamp life.
To set
Auto Off
, go to
SYSTEM SETUP: BASIC
>
Auto Off
and press / .
Timing of replacing the lamp
When the
Lamp indicator
lights up red or a message appears suggesting it is time to replace the lamp,
please consult your dealer or go to
http://www.BenQ.com
before installing a new lamp. An old lamp
may cause a malfunction in the projector and in some instances the lamp may explode.
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.
Lamp mode
Description
Normal
Provides full lamp brightness.
Economic
Lowers brightness to extend the lamp life and decreases the fan noise.
SmartEco
Adjusts the lamp power automatically depending on the content brightness level while
optimizing display quality
Lamp Save
Adjusts the lamp power automatically depending on the content brightness level while
offering a longer lamp life.
α
α
A
'
X
----
χ
×
A
'
Y
----
y
×
A
'
Z
----
z
×
A
'
A
----
a
×
+
+
+
=
