NEC C SERIES, User Manual

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Troubleshooting
For general instructions on troubleshooting, please refer to standard user’s manual of the base model
monitors C751Q, C861Q and C981Q.
Troubleshooting – Touch Monitor
The touch panel does not respond
 Make sure that PIP (picture in picture), PBP (picture by picture), TILE MATRIX, ROTATE and
ZOOM are not selected.

Check the input signal setting.

The touch panel function does not support the media player function. Please use the remote control
to set the media player while the touch panel function is working.

Make sure that TOUCH POWER setting in USB in CONTROL is “ON”.

Check the PC SOURCE setting in USB in CONTROL.
Using slot 2 type PC:

Make sure that PC SOURCE is AUTO or OPTION, and the input signal is set to OPTION.

Make sure the slot 2 type PC is connected properly.
Using external computer:

Make sure that PC SOURCE is AUTO or EXTERNAL PC, and the input signal is set to which
supplied by the connected computer.

Make sure the USB cable is connected properly.

The touch panel function may not work depending on the specification of an external computer and
connecting method.

If the TOUCH POWER setting in USB in CONTROL is set to “ON”, change it to “OFF” and back to
“ON” again after a moment.

When using touch function at the display edge, there may be a slight gap between touch position
on the screen and where you touched. It is the specification and not a failure of product.
The response of the touch screen is not correct
 Avoid direct sunlight or strong light on the screen.

If there are some obstacles near the TOUCH screen, it may malfunction.

Sensor bar module may be dusty or dirty, wipe gently with a soft cloth.
The computer’s power management does not work
It is recommended to choose “S1” at the “Power Management” item in the BIOS (abbreviation of Basic
Input / Output System) computer’s setup screen