Panasonic BTH1700BP - IND. MONITOR Operating Instructions Manual Download Page 24

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TROUBLESHOOTING

(cont’d)

Problems

Irregular color

Wrong picture
position, wrong
picture size

Front panel
buttons and knobs
do not function

Points to be checked

Is the monitor placed or moved close to
a speaker or any other device
incorporating a magnet?
Has the position of the monitor been
changed with the power on?

Has the picture position, size or
distortion been changed?

Have the UNDER SCAN or ASPECT
button been pressed?

Has the CONTROL LOCK function been
set to ON?

Has the monitor’s setting been changed
to enable control from an external unit
via the REMOTE terminals?

Measures (Remedy)

Move the device away from the monitor.
Press the DEGAUSS button on the front panel to
degauss the screen.
When degaussing, wait more than 30 minutes for
maximum effect.

Adjust the picture size (H. SIZE, V. SIZE) or position
(H. POSITION, V. POSITION) in the [SIZE/POSI. ADJ.]
item in the <SET-UP MENU> screen.

Adjust the picture distortion (PINCUSHION, PIN.
BALANCE, TRAPEZOID and PARALLELOGRAM) in
the [DISTORTION ADJ.] item in the <SET-UP MENU>
screen.

It may not be possible to expand the picture due to the
selected input mode. In this case, adjustment is
impossible.

When the UNDER SCAN or ASPECT button is lit,
press each button to invalidate each setting.

Set the CONTROL LOCK function to OFF.

Change the setting of the external control to control
the monitor locally.

The following are not malfunctions:

• You may see two horizontal lines on the monitor. They are the

shadows of the “damper lines” that are necessary for composing the
monitor. These lines are not a malfunction.

• About CRT tube reflection (when Zoom mode is used.)

The screen might appear as brownish white. This is due to a
reflection of part of the image on the CRT caused by certain signal
sources, and it is not a malfunction.

• 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 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.

Reference

pages

4, 5

21, 22

Damper line

When black vertical lines appear on the screen

Black vertical lines may appear on the screen if the aperture grill is tilted as a result of being shaken or jolted during shipment.

In this case, try tapping the monitor on the side. If this does not get rid of the lines, follow the procedure below.
1. Display a white screen, so that the problem area can be seen clearly.
2. Maximize the “CONTRAST” and “BRIGHT” adjustments, then place a bright white rectangle on the area.
3. After a while, the lines should disappear.

VOLUME

SLOT 1

DEGAUSS

MENU

BLUE

CHECK

ASPECT

AREA

MARKER

UNDER

SCAN

PULSE