Sharp 29A-SX1, Service Manual

Page: 13 / 86

13
29A-SX1
29A-SX5
29A-SX8
SX-68JF200
13
CUT OFF
, BKGD ADJUSTMENT METHOD
NO
.
Adjustment par
t
Adjusting procedure and conditions
W
a
v
e
fo
rm
and others
1
CR
T CUT OFF
Ser
vice mode
I 2
C b
us data
adjustment
1
Receiv
e E-5CH (Monoscope patter
n).
2
Select P-NORM with the remote controller
.
3
T
u
rn
on the ser
vice SW
, and select the CUT
OFF BKGD mode
.
4
Select the screen
VR 0/10.
5
Press
“-/--”
k
e
y of the remote controller to se-
lect the later
al in-line mode
.
9
T
u
rn
the screen
VR cloc
kwise
, and adjust the
first lighting later
al in-line r
aster to slightly light.
0
Adjust the CUT OFF data of tw
o other colours
,
and coarsely adjust the later
al in-line to become
white
. (Note 1)
q
T
u
rn
the screen
VR in the opposite direction to
the point where the later
al in-line r
aster goes
out. Note 1:
Apply the adjustment after aging with the beam current 1,500
±
50
µ
A or
more f
or 30 min
utes or more
.
w
Press
“-/--”
k
e
y of the remote controller to se-
lect the nor
mal mode
.
1
E-5CH (Monoscope patter
n) is receiv
ed.
2
Select P-NOM with the remote controller
.
3
Connect the beam ammeter betw
een
TP1601
and TP1602.
4
Coarsely adjust the beam current to appro
x.
1.7 mA with R1633 (sub-contr
ast
VR).
5
Receiv
e the windo
w patter
n with A
V
input.
(P
AL b
urst is gener
ated with the signal
gener
ator
.)
6
With the data of G-dr
iv
e and B-dr
iv
e
, adjust the
colour temper
ature 12,300K of the white peak
to white
.
7
Adjust the r
ight dar
k area of the windo
w to
12,300K with R-cut off
, G-cut off and B-cut off
.
8
Readjust the colour temperature at the white peak.
9
Chec
k 12,300K at the lo
w white
.
Note 1 :
Apply this adjustment after aging with the beam current 1,500
±
50
µ
A
or more f
or 30 min
utes or more
.
(On the white or green monocolour screen)
On the monocolour screen of white or g
reen
Note 1 : R CUT OFF
UP
"1" KEY
DO
WN
"4" KEY
G CUT OFF
UP
"2" KEY
DO
WN
"5" KEY
B CUT OFF
UP
"3" KEY
DO
WN
"6" KEY
Data up/do
wn is possib
le with the
abo
v
e
compar
ison.
*
12300
°
K
X
: 0.272
Y : 0.275
(With Minolta colour ther
mometer
CA-100) Note 1 : G-DRIVE
UP
"7" KEY
DO
WN
"
" KEY
B-DRIVE
UP
"8" KEY
DO
WN
"0" KEY
Data up/do
wn is possib
le with the
abo
v
e
compar
ison.
*
The colour temper
ature is based on
the shipment initial setting tab
le
.
2-1
White balance bac
kground
I 2
C b
us adjust-
ment (RF Signal)
1
The windo
w patter
n is receiv
ed with D
VD sig-
nal (component signal).
2
Apply the adjustment in the same manner as 2-1
5
and subsequence abo
v
e
. (12,300K)
(G-DRIVE, B-DRIVE, R-CUT
OFF
, G-CUT
-
OFF
, B-CUT
OFF)
Apply the adjustment after the end of 2-1.
Note 2 :
Use the windo
w patter
n of
the signal gener
ator f
o
r
adjustment.
(P
AL and colour b
urst are present.)
Note 3 :
Signal gener
ator of 2-1, 2-2
use "SX-1006"
2-2
* White
balance
bac
kground
I 2
C B
US adjust-
ment (D
VD
signal)