Maintenance

Maintenance/replacement

■■When to replace the lamp unit

The lamp unit is a consumable component. Since its brightness gradually decreases over time, it is necessary to replace it regularly. The estimated duration before replacement is 2 000 hours. However, this may be shortened depending on individual lamp characteristics, usage conditions, and the installation environment. Therefore, it is strongly recommended that a replacement lamp unit be prepared. The unit can damage the projector if it has not been replaced after 2 000 hours of usage. Thus, the lamp automatically turns off after approximately ten minutes.

If the cumulative operating time of all 4 lamp unit bulbs exceeds 2 000 hours, the power will be switch off after about 10 minutes.

On-screen display

Lamp indicator

REPLACE LAMP

 

The message is displayed for 30 seconds.

 

Over 1 800 hours

Pressing any button on the control panel

 

or remote control within 30 seconds will

Lights in red even during the standby

 

 

clear the message.

mode.

Over 2 000 hours

The message remains displayed until you

 

press a button.

 

 

 

Note

zzTo predict when to replace the lamp, check the lamp cumulative operating hours displayed in [LAMP1] - [LAMP4] ( page 109) of [STATUS].

zzThe usage period of 2 000 hours is a rough estimate and is not guaranteed.

■■Replacing the lamp unit

Attention

zzWhen the projector is mounted on the ceiling, do not perform tasks while your face is near the lamp unit. zzDo not remove or loosen the screws other than specified ones when replacing the lamp.

1) Set the <MAIN POWER> switch to <OFF> and disconnect the power plug from the power outlet.

zzWait at least one hour and and check if the lamp unit has cooled down.

2)Remove the lamp unit cover.

(i)Use a Phillips screwdriver to loosen the lamp unit cover fixing screw (one screw) counterclockwise until it turns freely, and then open the lamp unit cover slowly in the direction of the arrow described in the following figure.

•Opening the lamp unit cover quickly may result in damage to the cover.

•If you loosen the lamp unit cover fixing screw with the projector installed upward in the vertical direction, the lamp unit cover may open on its weight and drop off the lamp unit.

(ii)Hold the lamp unit cover securely and slide it in the direction of the arrow, and then pull it out backward to remove.

Lamp unit cover fixing screw

Lamp unit cover

Attention

zzBe careful to hold the lamp unit cover and to loosen the lamp unit cover fixing screws with the projector installed upward in the vertical direction since the lamp unit cover may open and the lamp case may drop off on its weight.

– This can cause severe injury or accidents.

148 - ENGLISH