
SmartPanel Projector Driver Application Note ViewSonic PJ862
©2005
SP
Controls
Inc.
601
Minnesota
Suite
115,
San
Francisco,
CA
94107
[email protected]
III. TROUBLESHOOTING
Additional tips can be found in the SmartPanel Configuration and Installation Guide.
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 verification indicates that the projector is off. 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.
The projector keeps turning itself off, though the Panel is on (then the Panel then shuts itself off).
The ViewSonic may be configured through the OPTIONS (OPT.) menu to shut itself off in the
absence of a valid input signal. Refer to the ViewSonic manual for more information. Also, ensure
that Panel is not configured with an unexpected value for Inactivity Shutdown.
When I try to turn the projector on, the warming indicator (red LED) blink.
The projector is in lockout mode, 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 ViewSonic power off, the Panel will usually detect this condition and
power off within thirty seconds. Should the ViewSonic power on, the Panel will usually detecting this
condition and power on within fifteen seconds.
2. This ViewSonic is currently controlled via a combination of Infrared and RS-232 only. Wired Remote
is not an option as the ViewSonic does not have a Wired Remote port.
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
ViewSonic 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 (April, 2005) Initial Revision