AV-20D304
1-18 (No.52103)
3.6.4 FOCUS
3.6.5 DEFLECTION CIRCUIT
Item
Measuring
instrument
Test point
Adjustment part
Description
FOCUS
Signal
generator
FOCUS VR
[In HVT]
(1) Receive the crosshatch signal.
(2) While looking at the screen, adjust the FOCUS VR
to the vertical and horizontal lines will be clear and in
fine detail.
(3) Make sure that the picture is in focus even when the
screen gets darkened.
Item
Measuring
instrument
Test point
Adjustment part
Description
V. SIZE &
V. CENTER
Signal
generator
Remote
control unit
[2.DEF(D)]
D03 : V SIZE
V. CENTER SW(S401)
[MAIN PWB]
(1) Receive the crosshatch signal.
(2) Select the <D03>(V SIZE).
(3) Adjust the <D03> so that the vertical screen size
becomes 90%.
(4) Adjust the V’ CENTER SW to agree the vertical cen-
ter with display center.
H. CENTER
Signal
generator
Remote
control unit
[2.DEF(D)]
D02 : H POSI
(1) Receive the crosshatch signal.
(2) Select <D02>(H POSI).
(3) Adjust the <D02> so that left width and right width of
the crosshatch screen becomes equal.
Picture
size
(100%)
Screen
size
(90%)
No
S03
Setting item
V SIZE
0~125
Variable
range
Initial setting
value
65
No
D02
Setting item
H POSI
0~31
Variable
range
Initial setting
value
10
