Section
4
Display Systems
4-7
Symptom:
The display is "noisy".
Cause/Remedy:
1. The input may not be terminated. Make sure the input is terminated (75
Ω
). If it is the last
connection in a loop-through chain, it should be terminated at the projector (only).
2. The signal cables carrying the input signal may be of poor quality. Use only good quality
signal cables. VDC Display Systems cables are recommended.
3. The distance between the input source device and the projector may be too great. If the
distance between the input source device and the projector is greater than 25 feet, signal
amplification/conditioning may be required.
4. There may be interference from other equipment. Keep the projector away from devices
which radiate electromagnetic energy such as motors and transformers. Common sources of
these are slide projectors, speakers, power amplifiers, elevators, etc. Keep 35 mm slide
projectors at least 2 feet away from the projector.
5. The input signal may be of poor quality.
6. If the source is a VCR or off-air broadcast, detail may be set too high
Symptom:
Modified display settings are not being saved in the active setup memory.
Cause/Remedy:
1. Is the active setup memory locked? Press [
SOURCE
] to display the Source Message. If a
is displayed, unlock the setup. (Press [
UTIL
] [
1
] [
3
])
2. ASR is set to On for the current input memory and an ASI was automatically performed due
to mismatched scan frequencies.
Symptom:
The display is OK when displaying the crosshatch test pattern ([
]) or status screen ([
]) but when
trying to display a source, nothing is visible.
Cause/Remedy:
1. You may not be selecting the source correctly. Refer to Section 3.2, for source selection
instructions.
2. The source may not be connected properly. Verify that the input source is active and check
the cables between the source and the projector.
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