I
I
ADJUSTMENT
TV ELECTRICAL CIRCUITRY
ADJUSTMENT
I
Adjusting Conditions
Adjusting Procedures
CRT Cut-off Adjustment
Adjusting Point
Cl
Red Bias control
Cl
Green Bias control
Blue Bias control
Screen control (a pat-t of
Green Drive control
Blue Drive control
Note:
Prior to this adjustment, warm up the unit with the
beam current of more than
I
for more than
minutes.
Receive “MONOSCOPE PATTERN” signal with
pattern generator.
Set Red bias control at
(O/l position.
Set Green bias control at
(O/l position.
Set Blue bias control at
(O/l position.
Set Green drive control at CENTER
position.
Set Blue drive control at CENTER
position.
Set the control at the “NORMAL” position that
Contrast is MAX
is CENTER
an
Brightness is CENTER
using control, “A” and
keys.
Set the Screen control at
(O/l position.
Turn on
(Service switch) at the horizontal
line position.
Connect the oscilloscope to
(Red Cathode).
Sub-Contrast Adjustment
Adjusting Point
Sub-Contrast control
Note:
Prior to this adjustment, warm up the unit with the
beam current of more than
I
for more than
minutes.
Receive “MONOSCOPE PATTERN” signal with
pattern generator.
Set the Contrast and Brightness controls at MAX
position.
Connect DC
to
and
(Full scale: 3
Adjust the Sub-Brightness control
so that
the blanking pulse on oscilloscope is
Slowly turn the Screen control clockwise and stop
it where the horizontal raster appears slightly, in
one of the three
Carefully adjust the Bias controls of the other two
the horizontal raster becomes white.
Turn the Screen control counterclockwise until
the horizontal raster disappears, and stop it.
Adjust Sub-Contrast control so that the beam
current becomes
1
8
Summary of Contents for VT-3418X
Page 54: ...VT 341 8X VT 51 18X is z 0 Y Y c U T J 2 c 4 54 ...
Page 61: ...VT 341 8X VT 51 18X TROUBLESHOOTING OF TV SECTION I I I I 1 I I I I I I I ___ I iiE I b z 61 ...
Page 74: ...m 3418X i T 5118X VCJ AV UNIT 7 I 8 I 9 I 10 I 11 I 12 I 74 ...
Page 76: ...VT 341 8X VT 5118X VCJ AV UNIT I 7 I 8 I 9 I 10 I 11 I 12 1 76 ...
Page 78: ...PWB B V I D E O CHROMA J U N G L E 7 I 8 I 9 I 10 I 11 I 12 I 78 ...
Page 80: ...PWE 8 I 1 V I D E O CHROMA JUNGLE hr r I 7 I 8 I 9 I 10 I 11 I 12 I 80 ...
Page 86: ...VT 341 8X VT 5118X 7 I 8 I 9 I 10 I 11 I 12 I 86 ...
Page 88: ...rr J I I TUNER w2o1 m ...
Page 89: ...n 3 30 ...
Page 90: ...VT 341 8X VT 5118X VCJ AV UNIT DUNTK830 I WEV3 I I I m c I 7 I 8 I 9 I 10 1 11 I 12 I 90 ...
Page 92: ... VT 341 8X VT 51 18X DUNTK8302WEV 1 DUNTK8303WEV I I 7 I 8 I 9 I 10 I 11 I 12 I 92 ...
Page 94: ...VT 341 8X VT 5118X DUNTK8302WEV3 DUNTK8303WEV3 7 I 8 I 9 I 10 I 11 I 12 I 94 ...
Page 97: ... _ _ _ __ D I m I n I t3 I m I n I GI I I 1 ...
Page 98: ...Memo _ a _ _ 98 ...
Page 102: ...I REC I w r I I I CAPSTAN FG 7 I 8 I 9 I 10 I 11 I 12 1 102 ...
Page 106: ...CASSETTE SW REC TIP I ED M I I II DFfwPG I I I I I I I I I I I I ...
Page 110: ...VT 341 8X I VT 5118X 1 J 7 I 8 I 9 I 10 I 11 I 12 I 110 ...
Page 112: ...VT 341 8X I T 5118X 1 WAVEFORMS 112 ...
Page 115: ...SCHEMATIC DIAGRAM n VCR Main Unit r 7 I 1 I 2 I 3 I 4 I 5 I 6 115 ...
Page 119: ...D I c9 I n I u I m I n I GI I I I ...
Page 123: ...D I a I n I u I m I n I GI I I I ...
Page 124: ...11 I 12 I ...
Page 126: ...J l J I i _ _ _ ___ I _ _ n f f 7 I 8 I 9 I 10 I 11 I 12 126 ...
Page 152: ...VT 341 8X VT 5118X MECHANISM CHASSIS PARTS 152 ...
Page 155: ...H G F E D C B A CASSETTE HOUSING CONTROL PARTS 1 I 2 I 3 I 4 I 5 I 6 I 155 ...
Page 157: ...MECt 1 I 2 I 3 I 4 I 5 I 6 157 ...
Page 158: ...VT 341 8X VT 51 18X I I 7 I 8 I 9 I 10 I 11 I 12 I 158 ...
Page 161: ...H G F E D C B A VT 341 8X VT 5118X 1 2 I 3 I 4 I 5 I 6 161 ...
Page 162: ...VT 341 8X VT 51 18X I I 7 I 8 I 9 I 10 I 11 I 162 12 I ...
Page 163: ... 1 DEL VT 3418X CABINET AND MECHANICAL PARTS 0 II I L e e m I w F J 1 I 2 I 3 I 4 I 5 I 6 163 ...
Page 164: ... ...
Page 169: ...Memo m 169 ...
Page 170: ...S H A R P T98 19 S Printed in Japan 0 w s MW KD ...