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QUICK CHECK ]
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5.3 Monitor generates beep sound
(1) Check power.
• Confirm that the power line voltage selector is set to the proper position.
(refer to item 2.4)
• Confirm that the electrical outlet works properly.
(2) Check that the horizontal picture width is controlled properly.
• When the horizontal picture width is set too wide, the protection circuit
in the monitor is activated.
Beep sound is generated and the both side of the picture fluctuates
during the protection circuit active.
Please adjust the horizontal width control to get narrower picture.
5.4 Booming sound just after power ''ON"
( 1) It is not accident because of the sound when each time you turn on the
display monitor, auto degaussing circuit moving itself, and the booming
sound (3 - 4 sec.) occur.
5. 5 Monitor screen is not stable
Input signals which are in the horizontal scanning frequency range of 30 kHz -
78 kHz, and in the vertical scanning frequency range of 50 Hz - 120 Hz, can be
automatically locked on and displayed on the SCfeen by the auto-tracking
function.
If you can not get the stable picture on the screen, please check followings.
( 1) Check connection. (refer to 5.1 (3))
(2) Check the level of the sync. signals.
The level of the sync. signal are shown in item 1.2 when using composite
external sync.
(3) Confirm the horizontal scanning frequency, and the vertical scanning
frequency.
· The monitor can accept only following signals.
Horizontal scanning frequency
30 kHz - 78 kHz
Vertical scanning frequency
50 Hz - 120 Hz
(4) It is normal for this monitor to need approx. 5 seconds after the sync.
signals provided for locking on, and displaying a stable picture.
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