12
Problems
No power supply.
No picture with the
power on.
No sound.
Shaking picture.
No colours, wrong
colour, or dark picture.
Unnatural, irregularly
coloured, or distorted
picture.
Front panel button
does not function.
Points to be checked
Is the power plug loosened or disconnected?
Is the video signal output from the connected
component?
Is the input signal selected properly?
Is the video cable disconnected?
Is the audio signal output from the connected
component?
Is the volume output set to minimum?
Is the audio cable disconnected?
Is the monitor close to a device generating a
strong magnetic field?
Is the colour system selected properly?
Has the picture control setting (CONTRAST,
BRIGHT, CHROMA or PHASE) been changed?
Is the monitor close to a speaker, magnet or any
other device generating a strong magnetic field?
Are the operation buttons on the front panel
locked? ( Has CONTROL LOCK function set to
ON?)
Measures (Remedy)
Firmly insert the power plug.
Set the connected component correctly.
Select the required video signal input with the
Input select button. (See page 6.)
Connect the video signal cable firmly.
(See page 11.)
Set the connected component correctly.
Adjust the speaker volume with the VOLUME/
SELECT buttons. (See page 6.)
Connect the audio signal cable firmly.
(See page 11.)
Move the device away from the monitor until the
picture stabilizes.
Set the COLOR SYSTEM in the <MENU> screen
mode to [AUTO] mode. (See page 7.)
Set each picture control to the standard setting.
(See page 6.)
Move the device away from the monitor and turn
the monitor’s power off. Wait at least 30 minutes,
then turn the power on again.
Set the CONTROL LOCK to OFF in the <SET-
UP MENU> screen mode. (See pages 8 and 9.)
TROUBLESHOOTING
Solutions to common problems related to your monitor are described here. If none of the solutions presented here
solves the problem, unplug the monitor and consult a JVC-authorized dealer or service center for assistance.
The following are not malfunctions:
●
When a bright still image (such as a white cloth) is displayed for a long period, it may appear to be coloured. This is due to the
structure of the cathode ray tube and will be deleted when another image is displayed.
●
You experience a mild electric shock when you touch the picture tube. This phenomenon is due to a normal buildup of static
electricity on the CRT and is not harmful.
●
The monitor emits a strange sound when the room temperature changes suddenly. This is only a problem if an abnormality
appears on the screen as well.
●
If two or more monitors are operated next to each other, their images may shake or be distorted. This phenomenon is due to
mutual interference; it is not a malfunction.
Move the monitors away from each other until the interference disappears or turn the power off on any monitor that is not being
used.
Summary of Contents for TM-A140PN-A
Page 15: ...ENGLISH 15 ...
