Runco Q-750I User Manual

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72
Q-750i Series Installation/Operation Manual
PRE
L
IMINAR
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RGB-HD images appear 
“noisy.”
• Tracking and Phase 
settings need adjustment. 
• Manually adjust Tracking 
and Phase settings (refer 
to Fine Sync on page 59).
LED is flashing red. 
• Q-750i internal 
temperature is too high 
(Note).
• 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. 
LED lights solid red.
• Fans are not working 
properly or power-on 
self-test has failed (Note). 
• 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. 
Table 5-1. Troubleshooting Chart (continued)
Symptom
Possible Cause(s)
Solution
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 83 for more information.