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HP 21” Color Monitor User’s Guide
Troubleshooting
30 EnglishEnglish
If OUT OF SCAN RANGE appears on the screen
The Remedies
One or more of the following messages may appear on the
screen.
If ACTIVATE USING PC appears on the screen, try pressing
any key on the computer, and confirm that your computer’s
graphic board is completely seated in the correct bus slot.
If CHECK INPUT SELECTOR appears on the screen, try
changing the input signal.
If CHECK SIGNAL CABLE appears on the screen, check that
the monitor is correctly connected to the computer.
This message shows the currently selected connector
(INPUT 1 or INPUT 2). If the monitor recognizes the
frequencies of the current input signal, the horizontal and
vertical frequencies are also displayed.
This indicates that the input signal is not supported by the
monitor’s specifications.
If you are replacing an old monitor with this monitor,
reconnect the old monitor. Then adjust the computer’s
graphics card so that the horizontal frequency is between 30 -
130 kHz, and the vertical frequency is between 48 - 170 Hz.
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