Panasonic PT-DZ21KU Operating Instructions - Page 148
When to replace the lamp unit, Replacing the lamp unit
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Maintenance/replacement Note zzThe model numbers of accessories and optional components are subject to change without notice. ■■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 REPLACE LAMP Lamp indicator Over 1 800 hours Over 2 000 hours The message is displayed for 30 seconds. Pressing any button on the control panel or remote control within 30 seconds will clear the message. The message remains displayed until you press a button. Lights in red even during the standby mode. 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. zzThe guide for replacing the replacement lamp unit (for portrait mode) is 500 hours. The on-screen message for replacing the lamp appears after 300 hours. ■■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. zzUse the same type of lamp unit for all four lamps. 1) Set the switch to 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 Maintenance 148 - ENGLISH