Sony TRINITRON KV-1442 - PRINTED WIRING BOARD ADJUSTMENTS; ANTI-PAL AND LINE CRAWLING ADJUSTMENT; ACC AND A-P-C ADJUSTMENTS; H-SIZE ADJUSTMENT

PRINTED WI RING BOARD |
115 V ADJ
Adjust RV601 for 115+0.5 V de on the digital multimeter.
Vee ial
REG OUT
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(1-596 -307-11)
1-6
ANTI-PAL, LINE CRAWLING ADJUSTMENT
@ ANTI-PAL ADJUSTMENT
Input the PAL SPECIAL colour bar signal.
2. Set the PICTURE, COLOUR and BRT control
to center click.
3. Confirm that there is no colour on the first
anti-PAL signal frames at the right and left of
the picture.
If there is adjust to remove the anti-PAL colour
at both side while tracking with RV302
(DELAY) and RV303 (PHASE).
=
TP91
digital multimeter
LINE CRAWLING ADJUSTMENT
. Input a PAL colour bar.
» Set the PICTURE, COLOUR and BRT control
to click center.
. Observe the B-5 (Blue) output waveform
shown in the oscilloscope.
| Adjust T3017 for minimum line crawling.
[R. G. B OUT]
ACC ADJUSTMENT
1. Input the PAL colour bar signal.
2 Set the PICTURE, COLOUR and BRT control to center
click.
3. Observe 1C301 pin % waveform and adjust RV304
(ACC) so that the waveform level is 180 + 10m Vp-p.
[H. V. JUNGLE]
H+FREQ ADJUSTMENT
1. Input the PAL color bar signal.
2. Set the PICTURE, COLOUR a
click.
3. Short circuit between pin and
wire.
. Adjust RV501 for the image shé
. Remove a jumper wire.
. Change tuner channel and con
Adjust RV502, RV503 and RV5\
picture.
H-SIZE ADJUSTMENT
oscilloscope
Adjust L806 for best size picture.
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f ‘\ I ‘
|
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Tl
:
ia
[A-P-C-
ADJUSTMENT
|
SPIES
ell
[5]
Vb
=
180
+
10MVp-p
L
1.
Input
the
PAL
colour
bar
signal.
B-5
@)=
F-2
"4
2.
Set
the
PICTURE
COLOUR
and
BRT
contro!
[
«
in
to
center
click.
@
@
3. Short circuit between pin and pin of
B
hee
are
Y/C
PROCESS
{
1C301
with
a
jumper
wire.
,
T301
4.
Adjust
CV301
for
suitable
colour
intencity.
5. Remove a jumper wire.