JVC AV-28KH1BUF Service Manual page 16

Measuring
Item
instrument
HORIZONTAL Signal
SIZE generator
adjustment
Remote
control unit
Very
close
ANGLE Signal
adjustment generator
Remote
control unit
BOW Signal
adjustment generator
Remote
control unit
1-16 (No.52139)
Test point Adjustment part
H-SIZE
Screen size
Picture size 100%
ANGLE
BOW
(1) Receive a cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Press the [RED] key, then enter the H/V adjustment
group.
(4) Select H-SIZE.
(5) Adjust H-SIZE until vertical lines on both the left and
Very
right part of the cross-hatch will be visible nor screen
close
will be so wide.
(6) Check and readjust H-SIZE item if the adjustment
becomes improper after some other geometric
adjustments are done.
(7) Press the [INFORMATION] key and memorize the
set value.
(1) Receive a cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Press the [RED] key, then enter the H/V adjustment
group.
(4) Select ANGLE.
(5) Adjust ANGLE till the vertical lines of the cross-hatch
pattern become straight.
(6) Check and readjust ANGLE item if the adjustment
becomes improper after some other geometric
adjustments are done.
(7) Press the [INFORMATION] key and memorize the
set value.
(1) Receive a cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Press the [RED] key, then enter the H/V adjustment
group.
(4) Select BOW.
(5) Adjust BOW till the vertical lines become straight.
(6) Check and readjust BOW item if the adjustment
becomes improper after some other geometric
adjustments are done.
(7) Press the [INFORMATION] key and memorize the
set value.
NOTE:
In case where there is a bow-shaped distortion of
images on the screen. (Figure)
Description