JVC AV-28KT1BUF/A Service Manual page 20

Measuring
Item
instrument
CORNER Signal
adjustment generator
Remote
control unit
Straight
ROTATION Signal
adjustment generator
Remote
control unit
NTSC Signal
HORIZONAL generator
SIZE
adjustment Remote
control unit
Very
close
1-20 (No.52137)
Test point Adjustment part
036
037
116 (16:9 mode)
117 (16:9 mode)
Straight
083
135
142 (16:9 mode)
Very
close
Screen size
Picture size 100%
Description
(1) Receive a PAL cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Select ADJUST MENU.
(4) Select 036.
(5) Adjust 036 till vertical lines at the upper corners of
the picture frame become vertical and parallel to
vertical corner sides of picture tube.
(6) Check and readjust 036 item if the adjustment
becomes improper after some other geometric
adjustments are done.
(7) Select 037.
(8) Adjust 037 till vertical lines at the lower corners of the
picture frame become vertical and parallel to vertical
corner sides of picture tube.
(9) Check and readjust 037 item if the adjustment
becomes improper after some other geometric
adjustments are done.
(10) Select 116 (16:9 mode).
(11) Adjust 116 in the same procedure as 5.
(12) Select 117 (16:9 mode).
(13) Adjust 117 in the same procedure as 8.
(1) Receive a PAL cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Select ADJUST MENU.
(4) Select 083.
(5) Adjust 083 to rotate the complete master clock-wise
and counter clock-wise depending on the CRT.
(6) Check and readjust 083 item if the adjustment
becomes improper after some other geometric
adjustments are done.
(1) Receive a NTSC cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Select ADJUST MENU.
(4) Select 135.
(5) Adjust 135 till vertical lines on both the left and right
part of the cross-hatch will be visible nor screen will
be so wide.
(6) Check and readjust TRAPEZ item if the adjustment
becomes improper after some other geometric
adjustments are done.
(7) Select 142 (16:9 mode).
(8) Adjust 142 in the same procedure.