Sharp 29H-FG3RU, Руководство по обслуживанию

Страница: 15 / 49

15
29H-FG3RU
15-1
15-2
FOCUS ADJUSTMENT
No.
Adjustment point
Adjustment conditions/procedure
W
aveform or remarks
FOCUS ADJUSTMENT
1.
Receive E-5CH (Monoscop pattern)
.
2.
With the remote controller
, make the image nor-
mal.
3.
Adjust the focus VR to make the character"575" on left bottom of monoscope as fine as possible.
1
CUT
-OFF
, BACKGROUND
AND
SUB-CONTRAST ADJUSTMENT
No.
Adjustment point
Adjustment conditions/procedur
eW
aveform or remarks
CRT CUTOFF ADJUSTMENT (I
2
C BUS
CONTROL)
Note : 1. Before CRT cutoff adjustment, make sure fol-
lowing items are in INITIA
L D
A
TA
.
a)
A063 CUT
-RS = 32
b)
A064 CUT
-GS = 32
c)
A1
14 CUT OFF = 6
1.
Switch
TV to video mode , blue back off
, with no
video signal and Press R/C to set picture into normal condition.
2.
Go to service mode at adjustment mode item
A1
15
(VG2).
3.
Adjust screen voltage until retrace line appear
,
the following OSD will appear at bottom of screen. UNST
ABLE
OUT ABOVE
4.
Finally , slowly decrease the screen variable re- sistor until following OSD appear
.
ST
ABLE
IN ABOVE / BELOW
*
*
The last OSD row is the indication of the screen
voltage value. If it show "BELOW", please in- crease the screen voltage and vice versa until "ST
ABLE"
AND "IN" OSD appear
.
Note :No matter
the indication
of last
row's
OSD
is
indicate "ABOVE"
or
"BELOW",
the
important
thing is OSD change to "ST
ABLE" and "IN".
1
WHITE BAL- ANCE BACK- GROUND I
2
C BUS
ADJUSTMENT (A
V
-IN
SIGNAL)
1.
Receive the internal RF monoscope pattern
.
2.
Make the picture normal with the remote controller
.
3.
Connect the beam ammeter between terminal of R623.
4.
Coarsely confirm the beam current to approx. 1.7mA.
5.
Receive the window pattern with
AV
input.
6.
With the data of DRI-GS and DRI-BS, adjust th
e
color temperature of the 50% white
.
7.
Adjust the right dark area of the window to 12300K with CUT
-RS and CUT
-GS.
8.
Go back to 50% white area to check colour tem- perature, if out of range, please go back to step (6).
Note 1:
Apply this adjustment after aging 30 min
or more
with
the
beam
current
1700
±
50
µ
A.
(On the white or green monocolor screen)
2:The colour
temperature
is based
on
the
shipment destination as shown in Table 2.1 at page 6-1.
3:
Adjust DRI-GC/GW
, DRI-BC/BW , CUT
-R
W/C
and CUT
-GW/C as following DATA
, after finis-
hing DRI-BS and DRI-GS DATA
adjustment.
CUT
-R
W/C = CUT
-RS
CUT
-GW/C = CUT
-GS
DRI-R
W = 32 (FIXED), DRI-RS = 32 (FIXED)
DRI-BC = "DRI-BS" (For 7500
°
K, 12300
°
K, 17000
°
K and
18000
°
K Condition)
2
7500K X : 0.300
Y : 0.310
18000K X : 0.255
Y : 0.255
17000K X : 0.261
Y : 0.261
12300K X : 0.272
Y : 0.275
( With Monolta color thermometer
CA-100)
* 12300
°
K
DRI-GW = "DRI-GS" -
7
DRI-BW = "DRI-BS" -
7
DRI-GC = "DRI-GS" -
7
DRI-RC = 25
* 17000
°
K & 18000
°
K
DRI-GW = "DRI-GS" -
7
DRI-BW = "DRI-BS" -
7
DRI-GC = "DRI-GS" -
5
DRI-RC = 27
* 7500
°
K
DRI-GW = "DRI-GS" -
5
DRI-BW = "DRI-BS" -
5
DRI-GC = "DRI-GS" -
7
DRI-RC = 25