Mitsubishi Electric XD221U, Service Manual

Page: 29 / 70

- -
LIFE TIME OF THE CONSUMABLE PARTS
Following are the reference of the life times of the consumable parts.
• Lamp ....................................Max. ,000 hours (When LAMP MODE is LOW.)
• Color wheel ..........................Approx. 8,000 hours
• Cooling fan (power) .............Approx. 0,000 hours
• Cooling fan (exhaust) ...........Approx. ,000 hours
• Cooling fan (lamp) ...............Approx. 0,000 hours
DEFECT STANDARD OF DMD PIXEL (REFERENCE)
Note:
This defect standard is intended to define the factory shipping criteria, not to guarantee the product.
Measurement conditions
Projection condition : 0 +/- 0. inches and wide edges
Projection distance : About . m.
Inspection signal : 00% white (internal or outside), 00% black (internal or outside), and 0% gray
00% black is not used to judge Bremish.
Measurement point : at any point of the screens
Picture quality menu : Contrast: 0 and bright: 0
Measurement time : Two minutes after it lights
Set posture : Measure it by the floor putting and hori/- 5deg.
Environmental illuminance : (lx) or less at the measurement point
Measuring instrument
: Measure it by vertical posture.
Others : Parts that influence brightness such as the projection lenses must include neither dust nor dirt, etc.
Standard value
Bremish or less
Dark pixel or less
Bright pixel 0 (display pixel)
(outside display pixel)
Unstable pixel 0
Adjacent pixel 0
(It is calculated besides the bright pixelts or dark pixels)
Definition
Bremish : Defect like misty bright (or misty dark) due to foreign body or scratch, etc. on optical path.
Bremish doesn't focus the image on the state of pictures just focus.
Dark pixel : Pixel defect where DMD mirror is off fixed.
Bright pixel : Pixel defect where DMD mirror is on fixed.
Unstable pixel : The pixel defect that the DMD mirror works regardless of the input image signal.
Blinking bright point is included in this.
Adjacent pixel : Pixel defect that does operation as which two adjoining DMD mirrors or more are the same.