Service manual

1.5.3 Firmware
Test Pattern: Burn In Mode (Refer to Chapter III-3. Hot Keys for Function Controls)
- Make sure the F/W is the latest version.
1.5.4 DDC
Test Pattern: EDID program
- Make sure it can pass test program.
1.5.5 Fine Tune and Sharpness
Test Signal: 1280*1024@60Hz
Test Pattern: Line Moire Pattern
- Check and see if the image has noise and focus performs well. Eliminate visual line
bar.
- If not, readjust by the following steps:
(a) Select and enter “Fine Tune” function on “Manual Image Adjust” to adjust the
image to eliminate visual wavy noise.
(b) Then, select and enter “Sharpness” function to adjust the clarity and focus of the
screen image.
1.5.6 Boundary
Test Signal: 1280*1024@60Hz
Test Pattern: Horizontal & Vertical Line Thickness Pattern
- Check and see if the image boundary is within the screen frame.
- If not, readjust by the following steps:
(a) Select and enter “Manual Image Adjust” function on OSD Main Menu.
(b) Then, select and enter “Horizontal Size” or “Horizontal/Vertical Position”
function to adjust the video boundary to be full scanned and within screen frame.
1.5.7 White Balance
A. TIMING: 1280x1024 64KHz/60Hz.
B. PATTERN: 5 Blocks.
C. LCD MONITOR set to 1280x1024 80K/75Hz BURN IN and warm up over 30
minutes.
D. CA110 color analizer at the center of screen and along a perpendicular to the
screen at 20cm from the display.
E. Power turn off, Press
“▲” and “ ”
and turn on power at the same time after
power LED is on, release
“▲” and “ ”
key, Then press “ ” key go to
factory mode. (Fig.1)
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(Fig.1)
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