I
VT-341
8X
I
VT-51
18X
4
Y/C CIRCUIT ADJUSTMENT
Adjustment of PAL System still
picture
vertical sync
Measuring
instrument
Monitor TV
Mode
Still picture playback
Adjustment of video E-E level
Osci
I loscope
Nleasuri
ng
instrument
I
Mode
I
E-E or Record
I
Input signal
PAL self-recording tape
Test point
Monitor screen
1
Input signal
1
PAL colour bar
(1
.OVp-p)
Test point
VIDEO OUT
(pin
(3)
of EL connector)
Adjusting point
Tracking control buttons (
+
),
t-1
I-
Control
I
R2202
E-E level control
I
Specification
1
No noise jitter
I
1
Specification
1
2.0
i
0.2
Vp-p
I
1.
Flay back the self-recorded tape in
th’e
PAL
System still mode.
2.
Using the TRACKING buttons on the remote
controller, make adjustment so that jitter
becomes minimum.
3.
Now press the STOP button to stop the tape.
1.
Connect an oscilloscope to the VIDEO OUT
(pin
(3)
of EL connector).
2.
Feed a
colour
bar signal to the VIDEO IN jack
and put the unit in
AV
input mode.
3.
Adjust
R2202
so that the signal amplitude is
2.OVp-p
as shown in Figure
2-3.
(See Note below)
Adjustment of
NTSC
System still picture
vertical sync
Measuring
instrument
I
Monitor TV
Mode
I
Still picture playback
I
Input signal
I
NTSC
self-recording tape
7%
Test point
I
Monitor screen
I
Adjusting point
Tracking control buttons ( + ),
(-1
Figure 2-3.
Specification
1
No noise jitter
I
Note:
1.
Play back the self-recorded tape in the
NTSC
System still mode.
2.
Using the TRACKING buttons on the remote
controller, make adjustment so that jitter
becomes minimum.
3.
Now press the STOP button to stop the tape.
After this adjustment, check the deviation of FM
luminance signal.
(Frequency and Deviation
adjustment.)
Adjustment of
VCO
Measuring
instrument
DC Voltmeter
I
Mode
I
E-E or Record
I
I
Input
signai
1
PAL colour bar
(1
.O
Vp-p)
I
I
Test point
I
TPSSOl(Signal),
TP5502(GND)
I
I
Control
I
FL5501
VCO
I
Specification
2.25
+,
O.lV
1.
Feed a
colour
bar signal to the VIDEO IN jack
and put the unit in
AV
input mode.
2.
Connect the DC voltmeter to test points
TPSSOl(Sig.)
and
TP5502
(GND).
3.
Adjust
FL5501
so that the DC voltmeter reads
2.25
+
O.lV.
43
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