Adjusting The Dichroic Mirror Blue - Christie GS Series Service Manual

Adjusting the dichroic mirror blue

Warning! If not avoided, the following could result in death or serious injury.
• This projector has built-in Class 4 laser module. Never attempt to operate the projector without all
covers properly installed unless instructed to do so in this manual for service.
• Protective glasses are required for laser safety when adjusting the dichroic mirror blue (DMB).
After replacing the combiner and blue laser bank, adjust the dichroic mirror blue (DMB).
1.Project an image of 100 inches in a dark environment (< 2 Lux).
2.Put a chroma meter (CL200) on the screen center of position 5 (P5).
3.Enter Service mode.
See Entering Service mode
4.Click Test pattern.
5.Select the White.
6.To tune the color temperature of P5 to between 7250K to 8000K, adjust the right dichroic mirror
blue (DMB) screw.
7.To tune the color uniformity, adjust the left dichroic mirror blue (DMB) screw.
Stop adjusting the dichroic mirror blue (DMB) screws when the projector is in the following
standard range:
a.The brightness of P5 is at its maximum.
b.Color temperature of P4, P5, and P6: Max-Min </= 200K.
8.To fix the dichroic mirror blue (DMB) screws, use Loctite 222 or green glue (BONBOND LOCK BB-
2100).
GS Series 1075 Service Manual
020-001236-02 Rev. 1 (12-2019)
on page 18.
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Service setups
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