Runco Quantum Color Q-750i Series Installation & Operation Manual page 90

Maintenance and Troubleshooting
Table 5-1. Troubleshooting Chart (continued)
Symptom
RGB-HD images appear
"noisy."
LED is flashing red.
LED lights solid red.
Note: You can obtain more detailed information about the cause of the error condition using
RS-232 commands. Refer to RS-232 Error Codes on page 85 for more information.
Possible Cause(s)
• Tracking and Phase
settings need adjustment.
• Q-750i internal
temperature is too high
(Note).
• Fans are not working
properly or power-on
self-test has failed (Note).
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Solution
• Manually adjust Tracking
and Phase settings (refer
to Fine Sync on page 61).
• Power off the Q-750i and
allow it to cool down.
Ensure that the intake and
exhaust vents are not
blocked. Turn the
projector back on. If the
problem persists, please
contact Runco Technical
Support for assistance.
• Power off the Q-750i and
allow it to cool down. Turn
the projector back on. If
the problem persists,
please contact Runco
Technical Support for
assistance.
Q-750i Series Installation/Operation Manual