Sharp PN-80TH5 Operation Manual page 65

The touch panel does not respond.
• Is the USB cable connected properly? (Touch pen
Management Tool Operation Manual)
This monitor has 2 USB ports (for touch panel). The USB
port (for touch panel) depends on the terminal to which the
computer's video signal cable is connected. (See pages 13
and 35.)
• Has Touch pen Management Tool been installed? (Touch
pen Management Tool Operation Manual)
• Has the pen tip of the touch pen become worn? Replace
the pen tip. (See page 21.)
• Is the battery inserted in the wrong orientation (+, -) in the
touch pen? (See page 19.)
• Is the touch pen battery exhausted?
• Are touch pens that are supplied touch pens or optional
PN-ZL06 used?
• If your finger is too dry, the screen may not respond.
• Is there anything attached to the screen?
Something attached to the screen may prevent correct
operation.
• Do not touch the screen when the monitor power is turned
on, it will lead to a malfunction. When this occurs, turn the
monitor power off and then on.
Power LED illuminates in blue and orange alternately.
"STATUS [xxxx]" appears in the corner of the screen.
• Hardware has a problem. Turn off the monitor and request
repair from your SHARP dealer.
(When STATUS ALERT is set to OSD & LED. This varies
depending on the setting.)
When "AUTO DIMMING" is displayed.
• When the internal temperature of the monitor rises
excessively, the brightness of the backlight automatically
decreases in order to prevent a further temperature rise. If
you attempt to adjust the brightness while the monitor is in
this state, "AUTO DIMMING" is displayed and you cannot
change the brightness.
• Remove the cause of the excessive temperature rise.
The monitor makes a cracking sound.
• You may occasionally hear a cracking sound from the
monitor. This happens when the cabinet slightly expands
and contracts according to change in temperature. This
does not affect the monitor's performance.
The Power LED is flashing in orange and blue alternately.
When "TEMPERATURE" is displayed in the corner of the
screen.
• When the internal temperature of the monitor rises
excessively, the brightness of the backlight decreases
automatically in order to prevent high-temperature-
related problems. When this occurs, "TEMPERATURE" is
displayed on the screen and the Power LED flashes orange
and blue alternately. (When TEMPERATURE ALERT is set
to OSD & LED. This varies depending on the setting.)
• If the internal temperature rises further, the monitor
automatically enters standby mode. (The Power LED
continues flashing orange and blue alternately.)
• Remove the cause of the excessive temperature rise.
- If the monitor enters standby mode due to a rise in
temperature, to return to normal display, turn the power
switch off and then back on again. The monitor, however,
will enter standby mode again if the cause of the
temperature rise is not eliminated. (See page 7.)
- Check whether the monitor is placed at a location where
a quick rise in temperature is likely. Internal temperature
rises quickly if the vents on the monitor are blocked.
- Internal temperature rises quickly if dust accumulates
inside the monitor or around the vents. Remove dust if
possible. Ask SHARP dealer about removing internal dust.
Troubleshooting
65
E