Section 5
Troubleshooting
User’s Manual 5-1
If the projector does not appear to be operating properly, note the symptoms present and use the following guide to
assist you. If you cannot resolve the problems yourself, contact your dealer for assistance.
NOTE: A qualified service technician is required when opening the projector to diagnose any “probable cause”.
The projector is on but there’s no display...
1. Was a lens cover accidentally left on? Remove lens cover.
2. Make sure the shutter is OPEN.
3. Is the lamp ignited? Check for interlock problems such as an open lamp door OR
check for light spillage out the back.
4. Is the correct input selected? Check cable connections.
5. Check if menus appear on screen.
6. Can you access test patterns? Make sure there is not a full black test pattern
selected for display—press
M enu
to access test patterns, then cycle patterns
with
keys. Check your source connections again.
Severe motion artifacts…
1. Most likely there is a synchronization problem with reversed 3/2 pull-down in
60Hz-to-24Hz film-to-digital conversion in your source. Correct at the source.
Image appears “squeezed” or vertically stretched into center of screen
1. Check your Resizing selection.
The display is jittery or unstable…
1. If the display is jittery or blinking erratically, ensure that the source is properly
connected and of adequate quality for detection. With a poor quality or
improperly connected source, the projector will repeatedly attempt to display an
image, however briefly.
2. The horizontal or vertical scan frequency of the input signal may be out of range
for the projector. Refer to Section 6, Specifications for scan frequency ranges.
3. The sync signal may be inadequate. Correct the source problem.
The display is faint…
1. Brightness and/or contrast and/or gamma may be set incorrectly.
2. The source may be double terminated. Ensure the source is terminated only once.
3. The source (if non-video) may need a different sync tip clamp location.
5.1 Displays
Symptom
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CAUSE / REMEDY:
Symptom
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CAUSE / REMEDY:
Symptom
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CAUSE / REMEDY:
Symptom
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CAUSE / REMEDY:
Symptom
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CAUSE / REMEDY:
Summary of Contents for DS+4K
Page 2: ......
Page 11: ...Section 2 Installation and Setup User s Manual 2 7 Figure 2 2 Vertical Offset Examples...
Page 12: ...Section 2 Installation and Setup 2 8 User s Manual Figure 2 3 Lens Vertical Offsets...
Page 14: ...Section 2 Installation and Setup 2 10 User s Manual Figure 2 5 Lens Horizontal Offsets...
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Page 75: ...Section 3 Operation User s Manual 3 53 Figure 3 29 Customizing the Input Signal...
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Page 102: ...Section 4 Maintenance 4 10 User s Manual Figure 4 8...
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Page 124: ...Appendix C Serial Communication Cables C 2 User s Manual...
Page 126: ...Appendix D Throw Distance D 2 User s Manual...
Page 127: ...Appendix D Throw Distance User s Manual D 3...
Page 128: ...Appendix D Throw Distance D 4 User s Manual...
Page 129: ...Appendix D Throw Distance User s Manual D 5...
Page 130: ...Appendix D Throw Distance D 6 User s Manual...
Page 131: ...Appendix D Throw Distance User s Manual D 7...
Page 132: ...Appendix D Throw Distance D 8 User s Manual...
Page 133: ...Appendix D Throw Distance User s Manual D 9...
Page 134: ...Appendix D Throw Distance D 10 User s Manual...
