JVC AV-28KT1BUF, Service Manual

Page: 19 / 24

(No.52137)1-19
BOW
adjustment Signal
generator
Remote
control unit
017 (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)
TRAPEZIUM
adjustment Signal
generator
Remote
control unit
034
114 (16:9 mode)
(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.
SIDE PIN
adjustment Signal
generator
Remote
control unit
035
115 (16:9 mode)
(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.
Item
Measuring
instrument
Test point Adjustment part Description
Parallel
Parallel