NEC MultiSync UN552 User Manual page 97
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Also See for MultiSync UN552:
- User manual (129 pages) ,
- Firmware update procedure (13 pages) ,
- Installation manual (5 pages)
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Snowy Picture, Poor Sound in TV
•
Check antenna/cable connection. Use new cable if
necessary.
The USB Hub does not operate
•
Check to make sure that the USB cable is properly
connected. Refer to your USB device user's manual.
•
Check that the USB upstream port on the monitor is
connected to the USB downstream port on the computer.
Please make sure the computer is [ON] or [USB
POWER] is [ON].
•
Disconnect one upstream USB cable when using
2 upstream connections.
Interference in TV
•
Check components for shielding, move away from
monitor if necessary.
USB or RS-232C or LAN control is not available
•
Check RS-232C (reverse type) or the LAN cable.
A category 5 or higher LAN cable is required for
connection.
•
Check USB cable connected to USB2 port.
Check the [EXTERNAL CONTROL] is set to [ENABLE]
then [PC SOURCE] is set to [EXTERNAL PC].
LED Indicator Patterns
LED on the monitor is not lit (no blue or red color
can be seen) (see
page
•
Make sure the power cord is properly connected to the
monitor and the wall, and make sure the monitor's main
power switch is ON.
•
Make certain the computer is not in a power-saving
mode (touch the keyboard or move the mouse).
•
Check that the [POWER INDICATOR] is set to [ON] in
the [CONTROL] settings of the OSD menu.
32)
The monitor goes into standby automatically
•
Please check [OFF TIMER] setting.
•
Set the [CEC] function to [OFF]. The monitor may go into
standby mode when a connected CEC supported device
goes into standby.
•
Please check [POWER] in the [SCHEDULE SETTINGS].
Media player function does not recognize the USB
storage device
•
Check that a USB storage device is connected to the
Media Player USB port.
•
Check the file format of the USB storage device if it is
not recognized by the monitor.
MicroSD memory card does not work
•
Check that the microSD memory card is properly
connected.
•
Check the microSD memory card format.
LED colors, except for blue, are blinking or
glowing
•
A certain failure might have occurred, please contact
your supplier.
•
If the monitor is powered off by the internal temperature
being higher than the normal operating temperature, the
LED will blink green or amber or red for six times. Please
leave the monitor for cool down for few minutes then turn
it on again.
•
The monitor could be in standby.
Press the power on button on the remote control or
press the
button on the monitor.
English−93
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