FHQ841-T LCD Panels User Manual
37
020-000735-01 Rev. 1 (06-2014)
Maintenance and
troubleshooting
Maintenance
The LCD Panel does not require any routine maintenance. There are no user-serviceable or user-
replaceable parts. Unless you are a qualified, factory-trained technician, do not attempt to repair or
replace any system component yourself. You will void the product warranty if you do so.
Troubleshooting
The table below provides some general guidelines for troubleshooting problems you may encounter
with your display. If the suggested solutions fail to resolve the problem or if you encounter an issue
not described here, please contact your dealer.
Symptom
Possible Cause
Solution
The display does not turn on.
• The display is not plugged in or
the AC outlet is not active.
• The main power switch is off.
• The remote control batteries have
run out.
• Ensure that the display is plugged
in and that the AC outlet is active.
• Set the main power switch (see
Display at a Glance
on page 13)
to the on position.
• Replace the batteries.
The display is on and menus appear,
but there is no picture.
• Incorrect source selection.
• Source component is not turned
on.
• Source component is connected
incorrectly or not at all.
• Select the correct source.
• Turn on the source component.
• Check connections from the
source component to the display.
The remote control does not work.
• The remote control batteries have
run out.
• Replace the batteries.
The display is jittery or unstable.
• Poor-quality or improperly
connected source.
• The horizontal or vertical scan
frequency of the input signal may
be out of range for the display.
• Ensure that the source is properly
connected and of adequate quality
for detection.
• Correct at the source.
Image is too bright and/or lacks
definition in the bright areas of the
image.
• Contrast is set too high.
• Decrease the contrast setting.
Image appears “washed out” and/or
dark areas appear too bright.
• Black level is set too high.
• Decrease the black level setting.
Image is too dark.
• Black level and/or brightness are
set too low.
• Increase the black level and/or
brightness settings.
