UD101L User Guide Document: UD101L-2
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There will be some image position shift after system setup. The main reasons are as follows:
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Thermal drift due to projector internal temperature change. When power on the projector,
the temperature is lower. After 20-30 minutes, the image position shift may be up to 5-
10mm. Different projector will have different thermal drift range.
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Stability of mounting system.
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Projector structure change after installation due to weight and thermal effect.
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Cable connection and cause weight balance issue.
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Change lamp
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Earth quake or caused by human reasons.
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The first projector image position calibration should be done within one month after installation.
The second calibration may be required after 3 months, then every 6 months or once a year.
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If user finds big position shift and doesn’t know the real issue. Please follow below procedures
to confirm the issue is from GeoBox or not.
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Turn off GeoBox and open projector internal test pattern.
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Mark the corner positions of the projector image.
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Check projector image shift condition after some time with GeoBox in OFF condition.
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User will clearly identify that the position shift is from GeoBox or not after this procedure.
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GeoBox is digital processor and will not change image position only for few pixels.
11.5. System crash and malfunction
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After FW update, please reset the system through a pin inserting to reset hole on the back
panel for 5 seconds to avoid abnormal settings inside the system.
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When the input source is 4:4:4 PC graphics signal, only [Brightness], [Contrast] and
[Sharpness] three items under [Picture] menu can be executed. If the input is 4:2:2 video
source, all the items are functional.
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When implement [Corner Wall] alignment, other geometry functions will be not functional.
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Remote controller may be interfered by environment and can’t be smoothly operation.
