SmartPanel Projector Driver Application Note
Sharp PG-M20x
© 2003 SP Controls Inc. 601 Minnesota Suite 115 San Francisco, CA 94107
III. TROUBLESHOOTING
Addition tips can be found in the
SmartPanel Configuration and Installation Manual.
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 keeps turning itself off even though the projector is on.
The Panel turns itself off when power polling indicates that the projector is off. Check to make sure
the RS-232 connection is correctly wired (it is extremely unlikely other control would work, and power
polling not).
When I try to turn the projector on, the warming indicator (red LED) blink.
The projector is in the default configured
lockout state
, and the Panel is waiting for its internal lockout
timer to expire. This feature protects the projector’s bulb. Be sure to let your client know about this
behavior.
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 both IR/Wired Remote and RS-232. We recommend Wired Remote
control as it is generally more robust. However, use of the Wired Remote will prevent use of the
Sharp’s remote control. A complete discussion of the relative advantages of IR vs. Wired Remote
can be found in the
SmartPanel Configuration and Installation Manual.
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.
V. REVISION HISTORY
1.
Revision A (September 2003)
Initial Release.
