Troubleshooting - JVC DT-V2000SU Service Manual

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TROUBLESHOOTING
Solutions to common problems related to your monitor are described here. If none of the solutions presented here solve
the problem, unplug the monitor and consult a JVC•authorlzed dealer or service center for assistance.
Problems
Points to be checked
Measures (Remedy) Reference
page
No power supply Is the power plug loosened or Firmly insert the power plug. 5, 6
disconnected?
No picture with Is the signal cable disconnected?
Connect the signal cable firmly. 5,6, 7
the power on
Is the power of the connected
Turn on the power of the connected component
-
component ON? and set it correctly.
Is the signal output lrom the connected
component?
Is the input signal selected correctly? Select the correct input with the INPUT SELECT 4, 8
buttons.
Is the input signal adapted to the
Check that the scanning frequency of the monitor 14, 15, 22
monitor's specification? is as follows:
Horizontal: 15 kHz/31 kHz -65 kHz
Vertical: 50 Hz - 100 Hz
Is the POWER indicator ( (]) ) blinking?
The POWER SAVE function is activated. When
no horizontal/vertical synchronization signals are
16
detected, the POWER indicator blinks and the
monitor enters suspended mode.
To turn it off, perform one of the following:
• Operate the computer,
• Input signals correctly,
• Unplug the power cord and reconnect it,
• Set the POWER SAVE function to OFF.
No sound Is the audio cable disconnected?
Connect the audio cable firmly. 5, 6, 7
Is the audio signal output from the Set the connected component correctly.
-
connected component?
Is the volume output set to minimum? Adjust the_ spea,ker volume with the VOLUME/ 4, 8
ENTER
0::0
/IJ:] buttons.
Wrong color
Has the picture adjustment been
Set each picture adjustment knob to the standard 9, 12
changed?
(centered) position. Or, set each picture
adjustment Item in [PICTURE ADJ.] in the
<MAIN MENU> screen to Standard (00) (or use
the [reset] function).
Has the WHITE BALANCE setting Set each [WHITE BALANCE] item in the <SET- 18, 19
been changed?
UP MENU> screen to Standard (000) (or use the
[reset] function).
Is an INPUT A (RGB/COMPO.) signal Connect each signal cable firmly. 5, 6, 7
cable disconnected when watching
INPUT A?
Is the INPUT A (RGB/COMPO.) signal Set the [RGB/COMPO.] item in [FUNCTION 13
setting correct (RGB or COMPO.) SELECT] in the <MAIN MENU> screen correctly.
when watching INPUT A?
Unnatural picture
Has [CONTRAST] or [BRIGHT] been
Adjust the CONTRAST
ca
or BRIGHT {) picture
9, 12
changed? adjustment knobs.
Or, adjust the [CONTRAST Cl] or [BRIGHT ◊J
item in [PICTURE ADJ.) in the <MAIN MENU>
screen.
Shaking picture Is the monitor close to a motor, Move the monitor away from the device until the
-
transformer or any other device picture stops shaking.
generating a strong magnetic field? Connect the power plug to another AC outlet
(a fan, fluorescent light, laser printer, away from the former one.
another monitor, etc.)
Problems Points to be checked Measures (Remedy) Reference
page
Irregular color
Is the monitor placed or moved close to Move the device away from the monitor. 15
a speaker or any other device Set the [DEGAUSS] Item in the <MAIN MENU>
incorporating a magnet? screen to degauss the screen.
Has the position of the monitor been When degaussing, wait more than 30 minutes for
changed with the power on? maximum effect.
Wrong picture
Has the picture position, size or Adjust the picture size (H SIZE, V SIZE) or 10, 11
position, wrong
distortion been changed? position (H POSITION, V POSITION) in the
picture size
[SIZE/POSITION AOJ.) item in the <MAIN
MENU> screen.
Adjust the picture distortion (PINCUSHION, PIN.
BALANCE, TRAPEZOID and PARALLELO-
GRAM) in the [DISTORTION ADJ.] item in the
<MAIN MENU> screen.
It may not be possible to expand the picture due
to the selected input mode. In this case,
adjustment is impossible.
Has the scan size or aspect ratio Adjust the [SCAN SIZE] or [ASPECT] item in 13
setting been changed? [FUNCTION SELECT] in the <MAIN MENU>
screen.
Front panel
Has the CONTROL LOCK function Set the CONTROL LOCK function to OFF. 17
buttons and
been set to ON?
knobs do not
function
The following are not maHunctlons:
• When a bright still image (such as a white cloth) is displayed for a long period, it may appear to be colored. This is due to the
structure of the cathode ray tube and will disappear when another image is displayed.
• You may sometimes 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 interlerence; it is not a malfunction. Move the monitors away from each other until the intelierence disappears or tum the
power off on any monitor that is not being used.
H the INPUT A or INPUT B indicator blinks:
It means that a malfunction has been detected by the monitor's self-test function.
INPUT A indicator blinks : bus control malfunction
INPUT B indicator blinks : deflection control mattunction
When one of these indicators blink, the protection function automatically cuts power.
If this happens, turn the power off, unplug the monitor and consult a JVC-authorized dealer or service center for repair.
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