JVC AV-28KT1BUF/A Service Manual page 19

Measuring
Item
instrument
BOW Signal
adjustment generator
Remote
control unit
TRAPEZIUM Signal
adjustment generator
Remote
control unit
SIDE PIN Signal
adjustment generator
Remote
control unit
Test point Adjustment part
017
034
114 (16:9 mode)
Parallel
035
115 (16:9 mode)
Parallel
Description
(1) Receive a PAL cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Select ADJUST MENU.
(4) Select 017.
(5) Adjust 017 till the vertical lines become straight.
(6) Check and readjust 017 item if the adjustment
becomes improper after some other geometric
adjustments are done.
NOTE:
In case where there is a bow-shaped distortion of
images on the screen. (Figure)
(1) Receive a PAL cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Select ADJUST MENU.
(4) Select 034.
(5) Adjust 034 till 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 034 item if the adjustment
becomes improper after some other geometric
adjustments are done.
(7) Select 114 (16:9 mode).
(8) Adjust 114 in the same procedure.
(1) Receive a PAL cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Select ADJUST MENU.
(4) Select 035.
(5) Adjust 035 till vertical lines close to the both sides of
the picture frame become parallel to vertical sides of
picture tube without any bending to left or to right
side of the screen.
(6) Check and readjust 035 item if the adjustment
becomes improper after some other geometric
adjustments are done.
(7) Select 115 (16:9 mode).
(8) Adjust 115 in the same procedure.
(No.52137)1-19