Convergence Adjustment - Sony Trinitron PVM-1353 Service Manual

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PVM-1353MD/1453MD
purity control
\.+ +./
purity
deflection yoke
R
G
B
A'=A
A
A'
Fig. 1
Fig.
2
Fig.3
Fig.
4
Fig. 5
Fig. 6
Fig. 7
~-D-EEB
Fig. 8
Fig. 9
Fig. 10
3-5.
CONVERGENCE ADJUSTMENT
l. Input a dot pattern signal.
CONT ···· · · Position providing good vision
BRT, ........ MIN
2. Align the horizontal R, G, and B dots at the center of the
screen with the H-STAT YR. (*!)
*
1 : If the H-CENTER adjustment was after the H-STAT
adjustment, re-adjust the H-STAT.
(The H-CENT YR changes the H-STAT too.)
3. Align the R, G, and B at the center of the screen with the
Y-STAT magnets. (*2)
*2 : After the Y-ST AT adjustment, paint on the knobs to
lock them.
y
Good example
Y -ST AT magnet knobs
While keeping the angles for A
and B equal (l=l'), align the
vertical convergence.
y
Bad example
If the A and B knobs are not
symmetrical (I
;6
I'), this has
bad effects. The focus may
deteriorate and beam striking
may occur.
4. For HMC, use the 6-pole magnet to adjust the R and B dots to
be symmetrical left and right about the G dot. (
*
l)
*l :
-32-
I'
~.
B
6-pole magnet
The HMC adjustment
changes the opening of the
6-pole magnet.
R
G
B
Adjust the 6-pole magnet so
that A=A'. You must maintain
the relationship I
;6
I'
while
moving the magnet.

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