JVC AV-28ED5BN, AV-28ED5SN, Руководство по обслуживанию

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(No.YA316)1-15
BOW
adjustment Signal
generator
Remote
control unit
BOW (1) Receive a crosshatch signal.
(2) Enter the SERVICE MODE.
(3) Press the [
RED ] key to enter the H/V adjustment
group.
(4) Select BOW .
(5) Adjust BOW until 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 to memorize the set
value.
NOTE :
In case where there is a bow-shaped distortion of
images on the screen. (Figure)
TRAPEZIUM
adjustment Signal
generator
Remote
control unit
TRAPEZ (1) Receive a crosshatch signal.
(2) Enter the SERVICE MODE.
(3) Press the [
RED ] key to enter the H/V adjustment
group.
(4) Select TRAPEZ .
(5) Adjust TRAPEZ until vertical lines, especially lines at
the sides of the picture frame become parallel to the
both sides of picture tubes as close as possible.
(6) Check and readjust TRAPEZ item if the adjustment
becomes improper after some other geometric
adjustments are done.
(7) Press the [ INFORMATION ] key to memorize the set
value.
SIDE PIN
adjustment Signal
generator
Remote
control unit
PARAB (1) Receive a crosshatch signal.
(2) Enter the SERVICE MODE.
(3) Press the [
RED ] key to enter the H/V adjustment
group.
(4) Select PARAB .
(5) Adjust PARAB until vertical lines close to the both
sides of the picture frame become straight to vertical
sides of picture tube without any bending to left or to
right side of the screen.
(6) Check and readjust PARAB item if the adjustment
becomes improper after some other geometric
adjustments are done.
(7) Press the [ INFORMATION ] key to memorize the set
value.
Item
Measuring
instrument
Test point Adjustment part Description
Parallel
Straight