Sharp DT-400 - Manual (Page 61)

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Appendix
Troubleshooting
Check
• Projector power cord is not plugged into the wall outlet.
• Power to the external connected devices is off.
• The selected input mode is wrong.
• Cables are incorrectly connected to the rear panel of the projector.
• External output has not been set when connecting notebook computer.
• “Contrast” and “Bright” are set to minimum position.
• Image adjustments are incorrectly set.
(Video Input only)
• Video input system is incorrectly set.
(INPUT 5)
• Input signal type (RGB/Component) is incorrectly set.
• “OSD Display” is set to “ (OFF)”.
• Adjust the focus.
• The projection distance exceeds the focus range.
(Computer Input only)
• Perform “Fine Sync” Adjustments. (“Clock” Adjustment)
• Perform “Fine Sync” Adjustments. (“Phase” Adjustment)
• Noise may appear depending on the computer.
• If the picture is normal, the sound is due to cabinet shrinkage
caused by room temperature changes. This will not affect
operation or performance.
• See “Maintenance Indicators”.
• When temperature inside the projector increases, the cooling
fan runs faster.
• The lamp will eventually need to be changed.
The lamp has reached the end of its life. Replace the lamp.
• Change the input signal type.
Problem
On-screen display does
not appear.
An unusual sound is
occasionally heard
from the cabinet.
Maintenance
indicator illuminates or
blinks in red.
The cooling fan
becomes noisy.
The lamp takes a long
time to turn on.
Picture is dark.
Image is green on
INPUT 5 Component.
Image is pink (no green)
on INPUT 5 RGB.
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Color is faded or poor.
Picture is blurred;
noise appears.
No picture
This projector is equipped with a microprocessor. Its performance could be adversely affected by
incorrect operation or interference. If this should happen, unplug the Unit and plug it in again after
more than 5 minutes.
For the location of the nearest Sharp Authorized Service Center, or to obtain product litera-
ture, accessories, supplies or customer assistance, please call 1-800-BE-SHARP (1-800-237-
4277) or visit SHARP’s website (http://www.sharpusa.com).
Service Information (For the U.S.)
DT400_E_P61_68.p65 04.10.18, 1:26 PM 61