Sharp 25WF30, Руководство по обслуживанию

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10
10-1
10-2
25WF30
No.
Adjustment point
Adjustment Condition / Procedure
W
aveform or others
1 2
WHITE BALANCE BACK- GROUND (CUT OFF BKGD) I
2
C
BUS ADJUST
-
MENT (A
V
SIGNAL)
1.
Receive E-5CH "Monoscope Pattern" signal.
2.
Select P-NORM with the remote controller
.
3
.
Connect the beam ammeter between
TP1601
and TP1602.
4.
Coarsely adjust the beam current to approx. 1.6mA with R1759 (Sub-Contrast VR)
5.
Receive the window pattern with
A
V
input.
(P
AL
burst is generated with the signal gen-
erator
.)
6.
With the data of G-drive and B-drive, adjust the color temperature 12,300°K of the white peak to white.
7.
Adjust the right dark area of the window to 12,300°K with R-cut of
f, G-cut of
f and B-cut
of
f.
8.
Read just the color temperature at the white peak.
9.
Check 12,300°K at the low white.
Note1 :
Apply this adjustment after aging with
the beam current 1,400±50µA or more for 30 min or more. (On the white or green minocolor screen)
Note:Data up/Down is possible
as below
.
R CUT OFF
UP
"1"
KEY
DOWN
"4" KEY
G CUT OFF
UP
"2"
KEY
DOWN
"5" KEY
B CUT OFF
UP
"3"
KEY
DOWN
"6" KEY
G-DRIVE
U
P
"7" KEY
DOWN
" "
K
E
Y
B-DRIVE
U
P
"8" KEY
DOWN
"0" KEY
*
12,300°K
X
: 0.272 ± 0.005
Y
: 0.275 ± 0.005
(With Monolta colour thermometer CA-100) *
The colour temperature is based on the shipment initial setting ta- ble.
CRT CUT
OFF
(CUT
OFF
BKGD) SER
VICE
MODE I
2
C BUS
DA
T
A
ADJUSTMENT
1.
Receive E-5CH "Monoscope Pattern" signal.
2.
Select P-NORM with the remote controller
.
3
.
T
urn on the service switch, and select the CUT
OFF BKGD mode at the service mode.
4.
Select the screen VR 0/10.
5.
Press "-/--" key of the remote controller to se- lect the horizontal centering mode.
6.
T
urn the scteen VR clockwise, and adjust the
first lighting horizontal centering rasterslighly light.
7.
Adjust the CUT OFF data of two other colors, and coarsely adjust the horizontal centering to become white. (Note 1)
8.
T
urn the screen VR in the opposite direction
to the point where the horizontal centering raster goes out.
Note 1:
Apply the adjustment after aging with
the beam current 1,600±50µA or more for 30 min or more.
9.
Press "-/--" key of the remote controller to se- lect the normal mode.
CUT OFF
, BKGD
ADJUSTMENT
*
Befor doing adjustment, make sure the R/G/B-cut and the B/G-Drive is at initial value.
No.
Adjustment point
Adjustment Condition / Procedure
W
aveform or others
1
MAX BEAM R1759
1
.
Receive E-5CH "Monoscope pattern" with standard mode.
2
.
Make the pictur normal with the remote controller
.(A
V MODE: DYNAMIC)
3
.
Connect the beam ammeter between
TP1601
& TP1602. Ammeter full scale-3mA range TP1602 is connected at the - side of the am- meter
.
TP1601 is connected at the + side of the am- meter
.
4
.
Adjust the beam current to 1.6mA ± 20µA with R1759 (sub-contrast VR).
Note :
Apply the adjustment after aging with the
beam current 1,400±50µA or more for 30 min or more.
(On the white or green monocolor screen)
SUB-CONT ADJUSTMENT
3
WHITE BALANCE BACK- GROUND (CUT OFF DVD BKGD) I 2
C BUS
ADJUSTMENT (DVD SIGNAL)
1.
The window pattern is received with DVD sig- nal (component signal).
2.
Apply the adjustment in the same manner as item 5 of adjustment 2 and the subsequence above. (17,000°K ) (G-DRIVE, B-DRIVE, R- CUT
OFF
, G-CUT
OFF
, B-CUT
OFF)
Apply the adjustment after the end of adjust- ment 2.
Note2:
Use the window pattern of the signal generator SX1006 for adjustment.(P
AL, colour burst is
generated with signal genera- tor
.)
2
SUB- CONTRAST (SUB-CONT) I 2
C BUS
ADJUSTMENT (A
V SIGNAL)
1.
Receive the window pattern with
A
V
input.
2
.
Make the picture normal with the remote controller
.(A
V MODE: DYNAMIC)
3
.
Select the SUB-CONTRAST adjustment mode with the remote controller
, and adjust
50% white to 165 ± 10cd.
Note 3:
Use "Y" of Minolta color analyzer CA-100 in adjustment.
Note 4:
Use the P
A
L
window pattern of
the signal generator for adjust- ment. (P
AL
and colour burst are
provided.)
Note 5:Window Pattern
3
SUB- CONTRAST (SUB-CONT DVD) I
2
C BUS
ADJUSTMENT (DVD SIGNAL)
1.
Select the DVD mode.
2.
Receive the signal of the DVD signal genera- tor
. (Component signal) (W
indow pattern)
3
.
Make the picture normal with the remote controller
.(A
V MODE: DYNAMIC)
4
.
Select the SUB-CONTRAST adjustment mode (DVD) with the remote controller
, and
adjust 50% white to 165 ± 10 cd.
4
SUB- BRIGHTNESS (SUB-BRI) I
2
C
BUS CON- TROL
(A
V
SIGNAL)
1.
Receive the window pattern with
A
V
input.
2
.
Make the picture normal with the remote controller
.(A
V MODE: DYNAMIC)
3.
Select the SUB-BRIGHT adjustment mode with the remote controller
, and adjust the right
dark white area of the window pattern to 5.5 ± 0.5 cd.
*
When E-2 CH (Crosshatch pat- tern) or equivalent signal is re- ceived.
1.Make the image normal with the
remote controller
.
2.Adjust the 3rd (1 thru 5 from the
left) black of the window pattern to sink.
5
SUB- BRIGHTNESS (SUB-BRI DVD) I
2
C BUS
CONTROL (DVD SIGNAL)
1.
Select the DVD mode.
2.
Receive the signal of the DVD signal genera- tor
. (Component signal) (W
indow pattern)
3
.
Make the picture normal with the remote controller
.(A
V MODE: DYNAMIC)
4.
Select the SUB-BRIGHT adjustment mode (DVD) with the remote controller
, and adjust
the right dark white area of the window pat- tern to 5.5 ± 0.5 cd of window pattern.
CUT OFF POINT
50% white for SUB-CONT
Dark white for SUB-BRIGHT