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Maintenance/replacement
ENGLISH -
55
Maintenance
Note
The lamp replace tim
z
e, it is necessary to carry the following calculation. Conrm the lamp used time in the [LAMP settings]
(
Æ
page 41). (Values obtained by the following calculation formula contain a slight error.)
For PT-LX351E / PT-LW321E
Lamp use time = [Lamp used time (Normal)] + [Lamp used time (ECO)] × 0.75
For PT-LX321E
Lamp use time = [Lamp used time (Normal)] + [Lamp used time (ECO)] × 0.67
For PT-LW271E / PT-LX271E
Lamp use time = [Lamp used time (Normal)] + [Lamp used time (ECO)] × 0.83
The usage period of
z
3 000 hours
/ 4
000 hours
/ 4 500 hours / 5 000 hours is a rough estimate and is not guaranteed.
Replacing the Lamp unit
J
Attention
When the projector is mounted on a ceiling, do not work with your face close to the projector.
z
Attach the lamp unit and the lamp cover securely.
z
When you experience difculty in installing the lamp, remove it and try again. If you use force to install the lamp, the
z
connector may be damaged.
Do not loosen other than designated screws.
z
Lamp cover screw
Handle
Lamp unit screws
Lamp cover
Turn off the power by following the procedure in "Powering off the projector". 1 )
(
Æ
page 27). Remove the AC power plug from the wall outlet. Wait at least 1 hour and
make sure the lamp unit and surroundings are cool.
Use a Phillips screwdriver to loosen the lamp cover screw and open the lamp cover.2 )
Open the lamp cover by pulling it slowly toward the direction of the arrow.
z
Use a Phillips screwdriver to loosen the two lamp unit screws until the screws turn 3 )
freely. Pull up the handle, and pull out the lamp unit gently.
Insert the new lamp unit in correct direction. Tighten the two lamp unit screws 4 )
securely with a Phillips screwdriver.
Close the lamp cover, and tighten the lamp cover screw securely with a Phillips 5 )
screwdriver.
J
Reset the Lamp Hours Used
After replacing the lamp unit, make sure to reset the usage time in the [Clear Lamp Hours] menu. (
Æ
page 42)
55


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