Performing An Auto-Brightness Constant Calibration - Christie GS Series Service Manual

ID Part name
1 Test equipment
2 Test signal
3 Test pattern
4 Inspection items
5 Criteria
1.If the image is noisy, press Menu > Size & Position > Pixel Phase and adjust the phase.
2.If blue color appears abnormal under the 64 Gray RGBW pattern, to complete a Phosphor Index
adjustment, enter Service mode.
See Adjusting the phosphor index
3.If the color appears abnormal under the 256 Gray pattern, to do a Filter Index adjustment, enter
Service mode.
See Adjusting the color index
Performing an auto-brightness constant
calibration
Always perform an auto-brightness constant (ABC) calibration after repairing the main board, the
combiner, or replacing the light engine.
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.
• Do not look into the projector lens when the laser is on. The extremely high brightness can cause
permanent eye damage.
1.Remove the top cover before during the adjustment.
See Removing the top cover
2.To power on with the top cover removed, firmly hold the interlock switch on the left cover.
3.Enter Factory mode.
See Entering Factory mode
4.Select ABC Feedback.
5.On the IR remote, press the Right button.
6.To confirm whether the max value of LS (light sensor) is within specification, refer to the image
below.
GS Series 1075 Service Manual
020-001236-02 Rev. 1 (12-2019)
Description
Video generator
480p, 720p, 1080p
Master, 64 Gray RGBW or SMPTE BAR, 256 Gray
• Check if the color level is supersaturated.
• If the color level is supersaturated, the 64 Gray RGBW test pattern appears blurred
and fuzzy.
• Colors in 64 Gray RGBW test pattern appear sharp and clear.
• No noise is visible on the screen.
on page 29.
on page 30.
on page 63.
on page 18.
Service setups
21