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ELECTRICAL
ADJUSTMENT
40 .
Adjustment
Item
Adjustment
Conditions
Adjustment
Procedure
1
NTSC free-
l .Receive the NTSC monoscope
pattern
l
Turn R1616 until the image appears
running
signal.
as specified.
frequency
2.Hold down S801.
(R1616)
2
PAL free-
running
frequency
(R1602)
1. Receive the PAL monoscope
pattern
l
Turn R1602 until the image appears
signal.
as specified.
2. Hold down S801.
3
Horizontal
1. Receive the NTSC monoscope pattern
l
Using the A and v keys, make the
center (NTSC)
signal.
overscan just the same at right and
WC)
2. Press S2001 to call up the ADJ IN
left
mode and select the following subject.
Overscan:
91-97%
Group:
VIDEO 1
Subject:
H-CENT
4
Horizontal
1. Receive the PAL monoscope
pattern
l
Using the A and v keys, make the
center (PAL)
signal.
overscan just the same at right and
WC)
2. Press S2001
to call up the ADJ IN
left
mode and select the following subject.
Overscan:
91,97%
Group:
VIDEO 1
Subject:
P-H-CENT
5
Contrast (DAC)
(g
amma
correction off)
1. Receive
the NTSC
IO-step
pattern
l
Using the A and v keys, adjust the
signal.
difference
between
the tenth-step
2. Connect
a dual-beam
oscilloscope
level
and the pedestal
level
to
between pin (2) of PI401 and GND.
6.0&O. 15 Vp-p.
3. Press S2001
to call up the ADJ IN
mode and select the following subject.
10
Group:
VIDEO 2
Subject:
SUB-BIAS
4. Using
the A
and v
keys, put the
waveform
to its proper shape.
5. Press S2001 again to call up the ADJ
IN mode
and select
the following
subject.
Group:
VIDEO 1
Subject:
SUB-R, SUB-G, SUB-B
Make sure all these subjects have an
entry of 0 (zero).
6. Adjust R861 to get the highest gain.
7. Finally select the following subject.
Group:
VIDEO 1
Subject:
CONT
19
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