This system eliminates the interruption if a lamp should fail (in dual-lamp operation mode). The Lamp Relay mode also operates the lamps alternately to enable 24/7 projection.*
* If the projector is to be operated continuously 24 hours a day / 7 days a week, use the dual-lamp optical system’s alternating
lamp operation (lamp changer) function. The projector cannot be operated continuously 24 hours a day / 7 days a week in
dual-lamp mode. Allow a minimum of two hours per week of non-operation time per lamp if using the dual-lamp mode.
The PT-DZ870 Series projectors lower the total cost of ownership because they have a lamp replacement cycle of up to 4,000 hours.*
* With the LAMP POWER set to ECO mode in dual lamp operation.
The usage environment affects the lamp replacement cycle.
A Heat-Pipe Cooling System Maintains Stable Operation up to 45°C*
A new optical cooling system featuring a heat pipe block suppresses temperature rises inside the projector and allows stable operation up to an ambient temperature of 45°C (113°F).* The use of this heat-pipe cooling system also achieves quiet operation, enabling viewers to concentrate on the presentation or on quiet movie scenes.
* The operating temperature range is 0°C to 45°C (32°F to 113°F) when used in locations from 1,400 m to 2,700 m (4,953 ft to 8,858 ft) above sea level.
If the ambient temperature exceeds 35°C (95°F), the light output may be reduced to protect the projector.
Dust-Resistant Optical Block
The optical block, the heart of the projector, is hermetically sealed to resist the effects of dust and other particles in the air, which makes it possible to remove the air filters for optics. It also contributes to the low TCO.
For easier maintenance, you can replace the lamp from the rear. This makes it easy to replace a lamp unit while the projector is still in the mounting bracket or dual stacked.
* The lamp filter must be replaced at the same time as the lamp.