Description Of Side Panel Sheet Switches; Super Reset (Data Initialization); Adjustment; Built-In Color Bars Adjustment (Adjustment From Dsp) - Sony DXC-390 Service Manual

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4-1-3. Description of Side Panel Sheet
Switches
Adj. no. is selected by the arrow t (up) or the arrow
T(down).
Data is adjusted by the arrow R(up) or the arrowr(down).
BLACK
MENU
FILE
SELECT
Side Panel Sheet Switch

4-1-4. Super Reset (data initialization)

1.Pressing the S101 switch on the SG-265 board and turn
TE
the power on.
L 13942296513
2. After fifteen seconds, the initial data is written and the
picture appears.
3. Turn the S102 switch on the SG-265 to the ADJ side
(down side).
4. The ADJ picture is displayed.
Monitor Screen
Adj no.
Adjust number XX is shown data XX.
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4-2 (E)
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WHITE
BARS
ENTER
XX data.
XX
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4-2. Adjustment

4-2-1. VCO Adjustment
(original oscillator adjustment)
Equipment : Monitor screen
Preparation : Input the VBS OUT on a camera to
the EXT IN on a signal generator.
Input the SC output on a signal
generator to a frequency counter.
Adjustment Procedure : Adjust Adj61 (NTSC) or Adj14
(PAL) so that the SC frequency
becomes the specification.
: 3.579545 MHz ± 5 Hz (NTSC)
Specification
: 4.433618 MHz ± 5 Hz (PAL)
4-2-2. Built-in Color Bars Adjustment
(adjustment from DSP)
Equipment : Waveform monitor and vectorscope
Preparation : Press the BARS button to the
Q Q
built-in color bars side.
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. . . . . R/G/B OUT Adjustment
. . . . . R OUT Adjustment
. . . . . B OUT Adjustment
: A=75 IRE ±1 IRE (NTSC)
Specification
B : The waveform becomes flat.
C : The waveform becomes flat.
DXC-390
G B
DXC-390P
co
.
G B
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Adjust Adj31 so that the white
level becomes the specification A.
Adjust Adj32 so that the wave-
form becomes the specification B.
Adjust Adj33 so that the wave-
form becomes the specification C.
700 mV ± 7 mV (PAL)
A
B, C
R
m
A
B, C
R
DXC-390/390P
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