Read Sharp LL-T155A (serv.man2) Service Manual online
Adjustment options
Adjustment option 1: MAIN MENU
TO SUB MENU (switching to SUB MENU)
Press the or button to switch over to SUB MENU.
AUTO ADJUSTMENT
Press the or button to start the AUTO ADJUSMENT function, thus
adjusting CLOCK, PHASE, H-POSITION, and V-POSITION to their
adjusting CLOCK, PHASE, H-POSITION, and V-POSITION to their
respective optimal states.
CLOCK
Use the or button to adjust the CLOCK so that you cannot see
vertical stripes-like noses in the pattern where white and black lines
vertical stripes-like noses in the pattern where white and black lines
alternate. (See the sketches on the right.)
PHASE
Use the or button to adjust the PHASE so that you can see a clear
white and black pattern on the screen with the horizontal stripes-like
noises minimized.
Adjust the CLOCK first, and then proceed with the adjustment of the
PHASE.
PHASE.
H-POSITION
The screen moves to the left by pressing the button and to the right
by pressing the button. Adjust the H-POSITION so that you can see
both the frame lines at the right and left edges of the adjustment
pattern.
pattern.
V-POSITION
The screen moves downward by pressing the button and upward by
pressing the button. Adjust the V-POSITION so that you can see
both the frame lines at the top and bottom edges of the adjustment
pattern.
pattern.
720 x 400 LINE (switching over resolutions)
Use the or button to set the horizontal resolution of the 400-line
screen of PC98 series, US TEXT and other machines.
screen of PC98 series, US TEXT and other machines.
640 x 400: PC98 series
720 x 400: US TEXT and others
You can switch over the horizontal resolutions of 720 x 400 LINE and
640 x 400 LINE only those two modes.
OSD WINDOW LOCATION (movement of adjustment
menu window)
menu window)
Press the or button to move the adjustment menu on the screen.
RESET
Press the or button to return the screen settings to the default
state.
state.
Vertical stripe-like noise
Horizontal stripes-like noise
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