41
Maintenance
Lamp information
Getting to know the lamp hour
When the projector is in operation, the duration (in hours) of lamp usage is automatically calculated by
the built-in timer. The method of calculating the equivalent lamp hour 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
LampSave
mode = a hours
2.
Equivalent Lamp Hour =
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
LampSave
mode
A’ is the longest lamp life spec among X, Y, Z, A
To obtain the lamp hour information:
1. Go to
Advanced Menu - System Setup : Advanced
>
Light Settings
and press
OK
. The
Light Settings
page appears.
2. Press
to select
Light Usage Time
and press
OK
. The
Light Usage Time
information is
displayed.
You can also get the
Light Usage Time
information on the
Information
menu.
When you calculate Equivalent Light Usage hour 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.
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.
α
α
A
'
X
----
χ
×
A
'
Y
----
y
×
A
'
Z
----
z
×
A
'
A
----
a
×
+
+
+
=
