Vivitek RP56HD21, Service Manual

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5.5. Clean Air Filters
Note
：
Clean air filters are replaceable without opening main projector cover.
5.6. Cooling system
：
DVR5610 is a projection product which using UHP(ultra high pressure) lamp as light source, most of heat is
generated from the UHP lamp, this feature leads to following thermal consideration.
In DVR5610, forced convection is designed as the main cooling mechanism, fans are employeed as active
cooling devices to circulate flow. Regarding to flow path scheme, fresh air will be sucked into system naturally
and then cool the power module, DMD, electronics board and then lamp, hot air behind lamp wake will be
ventilated by an axial fan and be guideded by an air channel then exhaust to outside ambient. This thermal
system will provide about 15 CFM to circulate heat and keep low temperature inside DVR5610. For the most
important component,DMD, a high efficiency heat sink is designed to conduct heat from DMD and then
exchange heat with air that provided by a blower. This cooling design is applied to prevent DMD damage from
high temperature and make sure the lifetime of DMD.
5.7. Acoustic noise
：
Acoustic noise measurements shall be conducted in accordance with ECMA 74 (5th edition).
The Equipment Under Test (EUT) is placed on a standard test table 0.5 m high, microphones centered on each
face of the EUT at a distance of 1.0 m from the EUT, 1.0 m above the floor. The free-field microphone shall
point at the EUT. The energy average A-weighted sound pressure level is reported. The EUT is placed on
the floor for the sound power test.
Test Procedure
The measurements shall be conducted in accordance with ECMA 74 with the addition for bystander positions
and declared in accordance with ECMA 109. Verification of the declared emission values shall be in
accordance with ECMA 109.
Maximum Levels
Declared Sound Power Emission Level
(
L
W
Ad
), bels
Average Bystander Position Sound
Pressure Level (
L
p
Am
), dBA
Steady State
：
33
6. Safety
6.1. Interlocks
Interlocks Type Description
Lamp Module Cover Micro switch Turns off all power when cover is removed
6.2. Labels
Labels
Lamp Removal Warning Decal Warns not to remove lamp when hot
Eye Damage Warning Lens Cap Decal Warns not to look into the projection lens when the
lamp is on.
Product label Includes model number and product serial number
Power Input label Shows input voltage ranges and max current ratings.