Read Sharp LC-28HM2E (serv.man2) Service Manual online
30
LC-28HM2
AN-28SP2
Adjusting point
Adjusting conditions
Adjusting procedure
5
PAL B DRIVE
adjustment
adjustment
1. Feed the color bar signal
carrying PAL composite
100% white and 0% white
(pedestal black).
100% white and 0% white
(pedestal black).
1. Adjust (P3L4) C PAL B DRIVE, so that the 100%
white portion has the largest blue area.
6
PAL COLOR
adjustment
adjustment
1. Feed the color bar signal
carrying PAL composite
100% white and 0% white
(pedestal black).
100% white and 0% white
(pedestal black).
1. Adjust (P3L5) C PAL COLOR, so that the 100% blue
portion has the largest blue area.
The portion referred to here
The portion
referred to here
referred to here
(4) SECAM signal adjustment (Adjustment item appearing on the 1st line of page 1 is described as P1L1.)
Adjusting point
Adjusting conditions
Adjusting procedure
1
Color system setting
1. Feed the SECAM video
signal.
1. If “SECAM” is not found in the last part of the 1st line,
press [ 6 ] button of the remote controller to switch to
“SECAM”.
“SECAM”.
2
BELL F0 adjustment
1. Hook up the oscilloscope at
TP2851.
2. Feed the monochrome
gradation signal.
* It is also acceptable to use
black and white portion at
the bottom of the color bar
signal. (Refer to the signal
exemplified in the item 4
below.) Same adjustment
can be done as described
in the right.
the bottom of the color bar
signal. (Refer to the signal
exemplified in the item 4
below.) Same adjustment
can be done as described
in the right.
1. Adjust (P4L1) BELL F0, so that the level “a” is
minimized.
Input signal
a
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