Trouble Shooting; Troubleshoot Common Conditions - ViewSonic VPW450HD User Manual

TROUBLE SHOOTING

Troubleshoot Common Conditions

The following list represents possible anomalies that you may encounter and methods for remedy. Please
refer to this checklist prior to contacting a service representative.
Symptom
No picture is displayed
Interference displayed on the
display or audible noise is heard
Color is abnormal
Picture is distorted with
abnormal patterns
Display image does not fill up
the full size of the screen
Can hear sound, but no picture
Can see picture but no sound is
heard
Some picture elements do not
light up
After-Images can still be seen
on the display after the display
is powered off. (Examples of
still pictures include logos,
video games, computer images,
and images displayed in 4:3
normal mode)
38 ViewSonic VPW450HD
Possible Cause
1. The power cord is disconnected.
2. The main power switch on the back of the dis-
play is not switched on.
3. The selected input has no connection.
4. The display is in standby mode in RGB mode.
1. Caused by surrounding electrical appliances,
cars/motorcycles or fluorescent lights.
1. The signal cable is not connected properly.
1. The signal cable is not connected properly.
2. The input signal is beyond the capabilities of the
display.
1. If under RGB mode, the H-Size and V-Size is
incorrectly set.
2. If under TV, AV1, AV2, or Component with
480i input, the 4:3 WIDE mode is switched on.
1. Improperly connected source signal cable.
1. Improperly connected source signal cable.
2. Volume is turned all the way down.
3. MUTE is turned on.
1. Some pixels of the plasma display may not turn
on.
1. A still picture is displayed for an over extended
period of time.
Remedy
1. Plug in the power cord.
2. Make sure the power switch is switched
on.
3. Connect a signal connection to the dis-
play.
4. Press any key on your keyboard.
1. Move the display to another location to
see if the interference is reduced.
1. Make sure that the signal cable is attached
firmly to the back of the display.
1. Make sure that the signal cable is attached
firmly.
2. Check the video signal source to see if it
is beyond the range of the display. Please
verify its specifications with this display's
specification section.
1. Use H-Size and V-Size to adjust the size
of the video.
2. Use the WIDE key to scroll through vari-
ous full screen modes.
1. Make sure that both video inputs and
sound inputs are correctly connected.
1. Make sure that both video inputs and
sound inputs are correctly connected.
2. Use VOLUME +/- to hear sound.
3. Switch MUTE off by using the MUTE
button.
1. This display is manufactured using an
extremely high level of precision technol-
ogy; however, sometimes some pixels of
the display may not display. This is not a
malfuction. Please see the enclosed war-
ranty card for more information.
1. Do not allow a still image to be displayed
for an extended period of time as this can
cause a burn in.