Runco Q-750d Ultra Series Specifications Page 102
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Maintenance and Troubleshooting
86 Q-750d Ultra Series Installation/Operation Manual
PRE
L
IMINAR
Y
RGB-HD or Component HD
images appear “noisy” or drop
out intermittently.
• Tracking and Phase
settings need adjustment.
• The DHD Controller is
having difficulty detecting
sync pulses from the
source.
• Adjust Tracking and Phase
settings (refer to Input
Position on page 62).
• Adjust the Sync Threshold
setting (refer to Sync
Threshold on page 81).
Computer images do not dis-
play correctly.
• The resolution and
frequency of the video card
in the computer are not
compatible with the
Q-750d Ultra.
• Select a compatible
resolution and vertical
frequency (refer to
Supported Timings on
page 115).
Images from an HDMI source
do not display.
• The resolution and
frequency of the video card
in the computer are not
compatible with the
Q-750d Ultra.
• EDID compatibility issue.
• HDMI cable from source to
DHD Controller is either
defective or too long.
• Select a compatible
resolution and vertical
frequency (refer to
Supported Timings on
page 115).
• Set HDMI EDID Extension
to “Off” (refer to HDMI
EDID Extension on
page 81).
• Try a known-good and/or
shorter HDMI cable.
Video from an HDMI source
lags behind audio.
• Refer to Audio/Video
Synchronization Issues
on page 20.
• Use an external A/V
receiver with audio delay
capability to synchronize
the audio signal with the
video signal.
The image is too large or too
small.
• Image size needs adjusting. • Adjust the image size (refer
to Input Position on
page 62).
AutoScope lens motor doesn’t
work.
• The motor is not plugged in
or the AC outlet is not
active.
• The motor is not connected
to the trigger output on the
DHD Controller.
• Incorrect trigger
assignment.
• Ensure that the motor is
plugged in and that the AC
outlet is active.
• Check the trigger
connection between the
lens motor and DHD
Controller (Figure 3-19).
• Correct the trigger
assignment (refer to
Configure Lens Motor
Trigger (Q-750d
Ultra/CineWide with
AutoScope only) on
page 49).
Table 5-1. Troubleshooting Chart (continued)
Symptom Possible Cause(s) Solution
- Q-750d Ultra Series 1
- Warranty 3
- Important Safety Instructions 7
- Compliance Information 8
- Table of Contents 11
- List of Figures 15
- 1. Introduction 17
- Using This Manual 18
- Description, Features 19
- Introduction 20
- 2. Controls and Functions 21
- Q-750d Ultra Rear 22
- DHD Controller Front 23
- DHD Controller Rear 24
- Controls and Functions 25
- Q-750d Ultra Remote 26
- Control Unit 26
- 3. Installation 29
- Quick Setup 30
- Installation 31
- Considerations 31
- Estimating Throw Distance 32
- Screen width (w) 32
- Ceiling Installation 34
- Floor Installation 34
- Installing the Primary 37
- Projection Lens 37
- Installing the Optional 40
- CineWide/AutoScope 40
- Lens Mount 40
- Mounting the Q-750d 46
- HDMI Out 47
- To Display 47
- DTV-Set-Top Box 50
- (DTV-STB) 50
- RGB Camcorder 51
- Figure 3-15 52
- Gaming Console 53
- Camcorder 53
- Audio Processor/ 54
- Switcher 54
- Secondary Display 54
- Control System 55
- AutoScope Lens Motor 56
- Turning on the Power 59
- Vertical 60
- Lens Shift 60
- Horizontal 60
- Adjusting the Image 61
- Geometry 61
- Installing and 63
- Adjusting the 63
- CineWide Anamorphic 63
- Too Far Right 65
- Too Far Left 65
- Correct position 65
- Too High 66
- Correct Lens Angle 66
- Incorrect Lens Angle 66
- Anamorphic Lens (Top View) 67
- 4. Operation 69
- 4:3 Image on 72
- 16:9 Display 72
- (Letterbox aspect ratio) 72
- 1080i HDTV Image 73
- 720p HDTV Image 73
- Below Black 75
- Off Crop Zoom 79
- Saturation 86
- Input Names 91
- Operation 100
- 6. External Control 103
- External Control 104
- Table 6-1. Serial Commands 105
- DBO R/W Yes -100 100 No 107
- DGO R/W Yes -100 100 No 107
- DRO R/W Yes -100 100 No 107
- IGO R/W Yes -32 32 No 109
- IBO R/W Yes -32 32 No 109
- IRO R/W Yes -32 32 No 110
- Using Discrete IR 118
- Using HDMI CEC 122
- Messages 122
- 7. Specifications 125
- DHD Controller 127
- Specifications 127
- Overall Dimensions – 129
- Q-750d Ultra 129
- Ultra/CineWide with 130
- AutoScope 130
- Supported Timings 131
- 020-1159-00 Rev. B 134
- November 2011 134
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