Clock & Phase Adjustments - Philips 150b Service Manual

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8 Hudson 150B
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Due to the different quality of video signal generated from graphics
cards. It is necessary to adjust CLOCK and PHASE functions for the
optimal video display of LCD monitor. Following steps will guide you to
make correct adjustment of CLOCK and PHASE.
However, CLOCK and PHASE functions are only available while analog
video signal is supplied. Operating unit under digital signal state, the
video clock information can be obtained from graphics cards directly.
Therefor, it is unnecessary to adjust these functions
Auto adjustment hotkey
The monitor has build-in a auto adjustment hotkey on the front panel,
you may obtained a optimal video display by simply press the
button and save the settings. CLOCK, PHASE, Vertical position, and
Horizontal position are adjusted automatically.
Manual adjustment
If the quility of display still poor or flicker, you may also improve it by
manual adjust CLOCK and PHASE functions to eliminate the flicker.
Step 1 : Click on the Start button (Win95, Win98 or Win NT)
and choose " Shut Down...". as shown in Fig.1
Step 2 : The menu of " Shut Down Windows " is as shown in Fig. 2
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CLOCK & PHASE Adjustments
AUTO button
Fig.1
Fig. 2
Step 3 : Remaining Shut Down Window on the screen , follow
The CLOCK and PHASE adjustment instructions for the
optimal video display.
Step 4 : Press the button to bring up OSD menu.
Video Noise
Step 5 : Select Video Noise by press
Step 6 : Press button for bring up it's submenu.
Step 7 : Press or button
be jitter as following figure, adjust PHASE and check the
picture, stop at the point that without any vertical jitter bar
remaining on the screen.
CLOCK Phenomenon
Step 8 : Press or button
be jitter as following figure, adjust CLOCK to fine-tune the video
until optimal display is obtained.
PHASE phenomenon
Step 9 : Quit OSD menu by press
button.
to adjust PHASE. The picture will
to adjust CLOCK. The picture will
button to save the settings.
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