Sharp DV-1600 Series User Manual

CRT ADJUSTMENT
Step
Adjust point
Connection
Procedure
1.
Focus control
(1) Receive monoscope pattern
t
signal.
1 (1) Adjust focus control to have best focus
at the central area of CRT.
, (2) Set contrast control at MAX ’
position.
I
(3) Set brightness control at MAX /
position (with 1 .OmA of beam
1
current). /
(Instead of monoscope pattern
I
I
2. Purity magnet
signal, it is allowed to use white /
pattern signal of 88% modulation.) i
I
I
(1) Receive monoscope pattern
signal,
Figure 20.
(2) Degauss CRT shadow mask with 1
degaussing coil.
,
(3) Prior to the adjustment, operate
/
I
the receiver for more than 10
1 (4) ~~~~ty magnets at the
horizontal position.
(5) Bring deflection yoke as near
purity magnet as possible.
j (6) Set R853 (R-bias) and R865.
/
(B-bias) at MIN position, then
turn R859 (G-bias) until green
raster appears.
Green
Figure 21.
(7) Adjust purity magnets for a
uniform green vertical band at I
/
the center of CRT screen.
For this adjustment, motion of
each magnet should be as slight I
as possible.
1 (8) Shift deflection yoke toward
I
CRT to achieve uniform green ,
I
I
purity on the entire of CRT
I
screen.
I (9) Perform white balance opera-
/
/
tion, and see if white balance in
I
picture is normal.
I
3. ’ Convergence
/ (1) Receive crosshatch pattern Static (center) convergence:
I
signal.
/ (2) Set contrast control at
(1) Rotate 4-pole magnet to converge red
and blue lines.
I
CENTER position.
j (3) Set brightness control at
1 (2) After completing red and blue center
j
convergence, rotate 6-pole magnet to
CENTER position.
;ly
converge the red and blue and green lines.
namic convergence:
.
: (3) Convergence of the three colour fields at
,
I
the edges of CRT screen is accomplished
I
by positioning of deflection yoke tilt
I
adjustment wedges.
j (4) After the adjustment, secure deflection
yoke with wedges.
10

Sharp DV-1600 Series Specifications

General

Brand	Sharp
Model	DV-1600 Series
Category	TV
Language	English