Sharp XG-P20XU Spezifikationen PDF herunterladen (Seite 7)

SmartPanel Projector Driver Application Note

Sharp XG-P20XU

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III. TROUBLESHOOTING

Additional tips can be found in the SmartPanel Configuration and Installation Guide.

The Projector keeps turning itself off!

The Panel turns itself off when power verification indicates that the projector is off (see Note 1). Also, if

the Automatic Power Shut-Off Feature is on, the projector will shut itself off if it does not receive a signal

after fifteen minutes.

• Check to make sure the RS-232 connection is correctly wired. If a third party power current

sensor is being used, make sure correctly wired and calibrated. The most common cause for

power polling failure when other control works, is that the RX line is incorrectly wired or soldered.

• Verify that the P20XU’s Economy Mode Automatic Power Shut-Off Feature is set to OFF as

explained in the Special Control Note in Section V of this document.

• Also verify that the MNTR Out/RS232C is set to OFF as explained in the Special Control Note in

Section V of this document. If this setting is incorrect, the Sharp will not respond to SmartPanel

power polling and the Panel will shut itself off (see next note and Note 1 below).

The Panel does not do anything at all.

When power is applied to the Panel it should run through a brief power on self-test, during which all of

the Panel lights will turn on and off in sequence. If you do not see this self-test, make sure power is

connected correctly and that polarity is correct.

The Panel has only partial control over the Sharp.

Verify that both RS-232 and the wired remote are correctly wired. The most common error is reversal

of RX and TX for RS232, and polarity reversal of the wired remote. Note that the Sharp is controlled

using both Wired Remote and RS-232. If a subset of functionality appears to be working, verify that

both types of control wiring are correctly wired.

Also, be sure that the Wired Remote port is manually set to “IR” and not to “Gyro” on the projector

and that pins 7 and 8 are jumpered on the female DB9.

IV. TECHNICAL NOTES

1. By default, projector power is verified by polling every few seconds via the RS-232 port. Power

polling can be suspended by depressing and holding the On key; polling will be restored when the

key is released. Should the Sharp power off, the Panel will usually detect this condition and power

off within twenty seconds. Should the Sharp power on, the Panel will usually detecting this condition

and power on within ten seconds.

2. The Sharp is controlled via RS-232 and wired remote. The Sharp can alternately be controlled with

RS-232 and IR emitter. A discussion of the advantages of Wired Remote versus IR can be found in

the SmartPanel Configuration and Installation Guide.

3. The lockout timer specifies the amount of time allowed between sending POWER OFF and POWER

ON to the projector (the delay allows the projector bulb to cool before re-powering). This delay can

be configured using the Configuration Utility; however, adjusting the lockout timer delay is

strongly discouraged as rapid re-powering causes undue wear on the projector’s bulb. Also, the

Sharp will not allow power to be restored before a minimum delay has expired. Therefore, disabling

the lockout delay will cause potentially confusing Panel behavior.

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