Sharp 29K-FD5RU, Руководство по обслуживанию

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29K-FD5RU
29K-FG5RU
13-1 13-2
B R R B
B R R B
B
X axis
Y axis
CONVERGENCE ADJUSTMENT
No. Adjustment point Adjustment conditions/procedure Waveform or remarks
CONVERGENC
ADJ.
( To be done
after the purity
adjustment.) 1. Receive the " Crosshatch Pattern" signal.
2. Using the remote controller, call NORMAL mode.
( Static convergence )
1. Overlap blue and red with the open-/closing an-
gle and rotation of the 4 pole magnet.
2. Overlap green on blue and red with the open-/
closing angle and rotation of the 6 pole magnet.
( Dynamic convergence )
1. Fix the wedges in a position so that the deflection
york neck is at the center of top bottom and left
right. ( Straight line and without any blur horizon-
tal / vertical line).
2. Adjust the Red, Blue, upper and lower of the cen-
tre y axis on the screen by using the Volume (VR2,
VR1)at the deflection york.
(Refer to fig.1 and fig.2)
3. If the Horizontal Red, Blue(XV) on the screen
centre X axisis shifted, correct the Red, Blue (XV)
by adjusting the balance coil on the deflection
york. (Refer to Fig. 3)
4. After confirm that there is no problems on the
entire screen ,bond each wedge on CRT and
glass tape on it. Fastening the screws of DY and
magnet unit (purity , 4 - pole and 6 - pole), then
coat the lacquer paint on DY fastening screw and
magnet unit fastening screw.
Note:
In case of poor convergence adjustmet on the
top and bottom and of the screen, adjust DY
by swing rightward and leftward.
(Refer to Fig-4)
1
Fig. 1
Adjust by VR1
Fig. 2
Adjust by VR2
Fig. 3
Adjust by Balance Coil
CRT NECK
Lacquer
Purity Magnet
4-Pole Magnet
6-Pole Magnet.
25mm
±
0.5mm
VR2
VR1
Balance Coil
Fig. 4
Adjust by Swing DY
R
FOCUS ADJUSTMENT
No. Adjustment point Adjustment conditions/procedure Waveform 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/procedure Waveform or remarks
CRT CUTOFF
ADJUSTMENT
(I
2
C BUS
CONTROL)
Note :
1. Before CRT cutoff adjustment, make sure fol-
lowing items are in INITIAL DATA.
a) A063 CUT-RS = 32
b) A064 CUT-GS = 32
c) A114 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 A115
(VG2).
3. Adjust screen voltage until retrace line appear,
the following OSD will appear at bottom of screen.
UNSTABLE
OUT
ABOVE
4. Finally , slowly decrease the screen variable re-
sistor until following OSD appear.
STABLE
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
"STABLE" 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 "STABLE" and "IN".
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