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MAINTENANCE
R699840 - Yunzi+ User Manual 31
15.2  Dirt on the Lens
The lens shall be cleaned using commercial blowers or lens cleaning papers (for cleaning glasses and cameras).
Do not use uid-type cleaning agents. This may lead to peeling of the surface coating lm. The lens surface is
fragile. Avoid rubbing it hard or knocking.
15.3  Replacing the Lamp
Light-source Lamp and Lamp Usage Time
The life of light-source lamps used for this unit is about 4000 hours when running this unit in low lamp mode.
When the lamp power is set to Low, the lamp life is approximately 4000 hours. This average lamp life is not
guaranteed and may not reach 4000 hours depending on the operating conditions. Deterioration progresses
rapidly when the remaining lamp usage time is short. Get ready or replace with a new lamp when the
accumulated usage time exceeds 4000 hours. Depending on the operating conditions, the lamp may have
to be exchanged earlier. If the image is dark or if the color tone is abnormal, replace the lamp as soon as
possible.
You can also check the accumulated hours of usage. Please refer to Lamp Time in the Information menu.
When the lamp usage time exceeds 2900 hours.The Lamp replacement message will be displayed on the
screen the next three projection starts.
Press the [BACK] button to clear the display.
ABOUT LAMP REPLACEMENT
If this unit is installed in a constricted place, attempting to replace the lamp in that place may cause injury.
Move this unit to a place large enough to perform work.
Use only genuine replacement parts for the lamp unit. Otherwise, malfunction may occur. Also, never
attempt to reuse an old lamp unit. This may cause marked performance deterioration or lamp blowout,
thus leading to unit malfunction. Broken pieces of the lamp outside this unit may also cause injuries
during lamp unit exchange.
Do not replace the lamp immediately after this unit has been used. The temperature of the lamp is still
high and this may cause a burn. Allow a cooling period of 1 hour or more before replacement.
Before replacing the lamp unit, pull out the power plug from the outlet and wait until the STANDBY/ON
led is still light red. Replacing a lamp with the plug connected to the outlet may cause injuries or electric
shocks.
Procedure for Lamp Replacement
During the lamp replacement process, you may have access to sensitive parts of the projector.
Loosen the screw on the lamp trap at the rear of this unit.
Open the lamp Cover and loosen the 2 screws on the lamp unit to release it.
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