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Used for PT-TW240EA
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The used lamp time is calculated internally in the following formula as the used time in each setting of [Normal], [Auto] and
[ECO] in [Lamp power mode]:
Lamp runtime = (Lamp runtime of [Normal] × 51 + Lamp runtime of [Auto] × 24 + Lamp runtime of [ECO] × 34) ÷ 51
In order to estimate the lamp life, please refer to [Lamp Hours Used (Normal)] and [Lamp Hours used (ECO)] in
the [Lamp settings] menu (
lamp power modes. Please note that they are not displayed individually.
Lamp use time = ([Lamp Hours Used (Normal)] × 51 + [Lamp Hours Used (ECO)] × α
When setting under both [Normal] and [ECO], not using [Auto]: α
When setting under both [Normal] and [Auto], not using [ECO]: α
When setting under both [ECO] and [Auto]: 24 < α
The ratio of α
will be smaller if the used time of [Auto] is more than that of [ECO].
2
Replacing the Lamp unit
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Attention
When the projector is mounted on a ceiling, do not work with your face close to the projector.
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Attach the lamp unit and the lamp cover securely.
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When you experience difficulty in installing the lamp, remove it and try again. If you use force to install the lamp, the
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connector may be damaged.
Do not loosen other than designated screws.
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Lamp cover
1 )
Turn off the Power by following the procedure in "Powering off the projector".
(
page 29). Remove the AC power plug from the wall outlet. Wait at least 1 hour and
Æ
make sure the lamp unit and surroundings are cool.
2 )
Use a Phillips screwdriver to loosen the lamp cover screw and open the lamp cover.
Open the lamp cover by pulling it slowly toward the direction of the arrow.
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3 )
Use a Phillips screwdriver to loosen the two lamp unit screws until the screws turn
freely. Pull up the handle, and pull out the lamp unit gently.
4 )
Insert the new lamp unit in correct direction. Tighten the two lamp unit screws
securely with a Phillips screwdriver.
5 )
Close the lamp cover, and tighten the Lamp cover screw securely with a Phillips
screwdriver.
Reset the Lamp Hours Used
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After replacing the lamp unit, make sure to reset the usage time in the [Clear Lamp Hours] menu. (
Æ
page 43). [Lamp Hours Used (ECO)] is a total real time under [Auto] and [ECO]
Handle
Lamp cover screw
Maintenance/replacement
= 34
2
= 24
2
< 34
2
Lamp unit screws
) ÷ 51
2
Æ
page 44)
ENGLISH -
57
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