Sharp 29A-SX1, Service Manual

Page: 14 / 86

14
29A-SX1
29A-SX5
29A-SX8
SX-68JF200
14
SUB CONT SUB-BRIGHT ADJUSTMENT
NO
.
Adjustment par
t
Adjusting procedure and conditions
W
a
v
e
fo
rm
and others
3
MAX BEEM R1633
1
Receiv
e E-5CH (Monoscope patter
n) with
standard mode
.
2
Mak
e the image nor
mal with the remote con-
troller
.
3
Connect the beam ammeter betw
een
TP1601
and TP1602. Ammeter full scale 3mA r
ange
TP1602 is connected at the - side of the ammeter
.
TP1601 is connected at the + side of the ammeter
.
4
Adjust the beam current to 1.7mA
±
50
µ
A with
R1633 (sub-contr
ast
VR).
Note :
Apply the adjustment after aging with the
beam current 1,500
±
50
µ
A or more f
o
r
30 min
utes or more
.
(On the white or g
reen monocolour
screen)
1
Select the D
VD mode
.
2
Receiv
e the signal of the D
VD signal gener
a-
tor
. (Component signal)
(Windo
w patter
n)
3
Mak
e the image nor
mal with the remote con-
troller
.
4
Select the SUB-CONTRAST adjustment mode (D
VD) with the remote controller
, and adjust
50% white to 110
±
3cd.
SUB-BRIGHT I 2
C b
us adjust-
ment (RF signal)
CUTOFF POINT
SUB-CONTRAST I 2
C b
us adjust-
ment (RF signal) SUB-CONTRAST I 2
C b
us adjust-
ment (D
VD
signal) SUB-BRIGHT I 2
C b
us adjust-
ment (D
VD
signal)
*
When E-2CH (Crosshatch patter
n) or
equiv
alent signal is receiv
ed.
1
Mak
e the image nor
mal with the
remote controller
.
2
Adjust the 3rd (1 thr
u 5 from the
left) b
lac
k of the windo
w patter
n to
sink.
1
Receiv
e the windo
w patter
n with A
V
input.
2
Mak
e the image nor
mal with the remote con-
troller
.
3
Select the sub-br
ight adjustment mode with the
remote controller
, and adjust the r
ight dar
k white
area of the windo
w patter
n to 2.7cd
±
0.3cd.
1
Select the D
VD mode
.
2
Receiv
e the signal of the D
VD signal gener
a-
tor
. (Component signal) (Windo
w patter
n)
3
Mak
e the image nor
mal with the remote con-
troller
.
4
Select the sub-br
ight adjustment mode (D
VD),
and adjust the r
ight dar
k white area of the win-
do
w patter
n to 2.7cd
±
0.3cd of the windo
w
patter
n.
1
Receiv
e the windo
w patter
n with A
V
input.
2
Mak
e the image nor
mal with the remote con-
troller
.
3
Select the SUB-CONTRAST adjustment mode with the remote controller
, and adjust 50% white
to 110
±
3cd.
Note
1
:
Use
“Y”
of Minolta colour
analyz
er CA-100 in adjust-
ment 4-1, 4-2, 5-1, 5-2.
4-1
4-2
5-1
5-2
Note 2 :
Windo
w patter
n of signal
gener
ator is same ad J
A
-
12CH.
Note 3 :
Use the signal generator "SX-1006" f
or SUB-CONT
.,
SUB-BRIGHT adjustment.