Installation manual

SmartPanel Projector Driver Application Note

Sharp XG-E3000U

help@spcontrols.com

III. SPECIAL NOTE: SHARP FIRMWARE PROBLEMS

Nature of the Problems

Some installations of the Sharp XG-E3000U have reported a “blooming” psychedelic display of colors,

resulting from the failure of one of the Sharp’s video boards to properly initialize.

The problem is characterized by a color-wash cycling, and scrambled or absent video display.

We have demonstrated that this problem may consistently be provoked by flooding the Sharp’s serial port

with data. We currently believe that the Sharp is incapable of correctly handling correctly formatted RS-

232 communications during limited but consistent conditions, even in normal operation.

Our Position

At present

these problems are known to be Sharp XG-E3000U firmware problems.

Onsite analysis of

this problem has revealed no SmartPanel malfunction whatsoever.

We are currently working with Sharp

help them patch the XG-E3000U firmware.

Advisory

We recommend that

all Sharp XG-E3000U installations should upgrade or install the Revision B

Driver.

This revision adjusts timing to be as conservative as possible; as a result, we believe problems should be

minimized or absent entirely. However, users and installers may notice slightly increased delays

introduced between switching and other control events.

Please notify SP Controls technical support at once if any installation exhibits control problems of the type

described above with the Revision C driver.

What to do in an Emergency

In all cases, the field remedy for control failures has been to power cycle the Sharp.

No reconfiguration

or power cycling of the SmartPanel has been necessary at any site where the problem has

occured.