JVC AV-28KT1BUF/A Service Manual page 17

4.6.3 DEFLECTION CIRCUIT ADJUSTMENT
Measuring
Item
instrument
VERTICAL Signal
POSITION generator
adjustment
Remote
control unit
VERTICAL SIZE Signal
adjustment generator
Remote
control unit
Very close
Screen
size
Very close
VERTICAL Signal
S-CORRECTION generator
& LINEARITY
adjustment Remote
control unit
Test point Adjustment part
030
110 (16:9 mode)
031
111 (16:9 mode)
Picture
size
100%
032
033
112 (16:9 mode)
113 (16:9 mode)
UPPER
CENTER
LOWER
Description
(1) Receive a PAL circle pattern signal.
(2) Enter the SERVICE MENU.
(3) Select ADJUST MENU.
(4) Select 030.
(5) Adjust 030 to make A=B.
(6) Check and readjust 030 item if the adjustment
becomes improper after some other geometric
adjustments are done.
(7) Select 110 (16:9 mode).
(8) Adjust 110 in the same procedure.
(1) Receive a PAL cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Select ADJUST MENU.
(4) Select 031.
(5) Adjust 031 until horizontal black lines on both the
upper and lower part of the cross-hatch pattern
become very closeted the upper and lower
horizontal sides of picture size and nearly about to
disappear.
(6) Check and readjust 031 item if the adjustment
becomes improper after some other geometric
adjustments are done.
(7) Select 111 (16:9 mode).
(8) Adjust 111 in the same procedure.
(1) Receive a PAL cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Select ADJUST MENU.
(4) Select 032.
(5) Adjust 032 till the size of squares on both the upper
and lower part of cross-hatch pattern become equal
to the squares laying on the vertical center of the
cross-hatch pattern.
(6) Check and readjust 032 item if the adjustment
becomes improper after some other geometric
adjustments are done.
(7) Select 033.
(8) Adjust 033 till all the size of squares of the cross-
hatch pattern become in equal size from the top of
the screen to its bottom of the whole screen.
(9) Check and readjust 033 item if the adjustment
becomes improper after some other geometric
adjustments (especially
adjustment) are done.
(10) Select 112 (16:9 mode).
(11) Adjust 112 in the same procedure as 5.
(12) Select 113 (16:9 mode).
(13) Adjust 113 in the same procedure as 8.
after than S-COR
(No.52137)1-17