Read Sony MV-900SDS / XVM-R90D Service Manual online
14
XVM-R90D
2
Back Limiter Level
Procedure:
1. In the “1 Contrast Level of Luminance Signal” status, press
the [MENU] utton to display “Black Limit”, and press the
[REVERSE] button.
[REVERSE] button.
2. Adjust by pressing the [+]/
–
buttons so that the A value of
waveform (fig. 8-2) becomes 1.0 V V.
3. Press the [REVERSE] button and write the date to EEPROM
(IC402 on the MONITOR board).
3
White Limiter Level
Procedure:
1. In the “2 Black Limiter Level” status, press the [MENU] button
to display “White Limit”, and press the [REVERSE] button.
2. Adjust by pressing the [+]/
–
buttons so that the E value of
waveform (fig. 8-2) becomes 3.9 V V.
3. Press the [REVERSE] button and write the date to EEPROM
(IC402 on the MONITOR board).
4
R-sub Bright
Procedure:
1. In the “3 White Limiter Level” status, connect the
oscilloscope to the TP513 and TP810 on the MONITOR board.
2. Press the [MENU] button to display “R-Sub BRT”, and press
the [REVERSE] button.
3. Adjust by pressing the [+]/
–
buttons so that the A value of
waveform (fig. 8-2) becomes 1.0 V V.
4. Press the [REVERSE] button and write the date to EEPROM
(IC402 on the MONITOR board).
5
B-sub Bright
Procedure:
1. In the “4 R-sub Bright” status, connect the oscilloscope to
the TP513 and TP812 on the MONITOR board.
2. Press the [MENU] button to display “B-Sub BRT”, and press
the [REVERSE] button.
3. Adjust by pressing the [+]/
–
buttons so that the A value of
waveform (fig. 8-2) becomes 1.0 V V.
4. Press the [REVERSE] button and write the date to EEPROM
(IC402 on the MONITOR board).
6
R-ch Sub Contrast
Procedure:
1. In the “5 B-sub Bright” status, connect the oscilloscope to
the TP513 and TP810 on the MONITOR board.
2. Press the [MENU] button to display “R-Sub CONT”, and press
the [REVERSE] button.
3. Adjust by pressing the [+]/
–
buttons so that the D value of
waveform (fig. 8-2) becomes 3.4 V V.
4. Press the [REVERSE] button and write the date to EEPROM
(IC402 on the MONITOR board).
7
B-ch Sub Contrast
Procedure:
1. In the “6 R-ch Sub Contrast” status, connect the oscilloscope
to the TP513 and TP812 on the MONITOR board.
2. Press the [MENU] button to display “B-Sub CONT”, and press
the [REVERSE] button.
3. Adjust by pressing the [+]/
–
buttons so that the D value of
waveform (fig. 8-2) becomes 3.4 V V.
4. Press the [REVERSE] button and write the date to EEPROM
(IC402 on the MONITOR board).
8
Gamma 1
Procedure:
1. In the “7 B-ch Sub Contrast” status, connect the oscilloscope
to the TP513 and TP811 on the MONITOR board.
2. Press the [MENU] button to display “Gamma 1”, and press the
[REVERSE] button.
3. Adjust by pressing the [+]/
–
buttons so that the B value of
waveform (fig. 8-2) becomes 1.9 V V.
4. Press the [REVERSE] button and write the date to EEPROM
(IC402 on the MONITOR board).
9
Gamma 2
Procedure:
1. In the “8 Gamma 1” status, press the [MENU] button to display
“Gamma 2”, and press the [REVERSE] button.
2. Adjust by pressing the [+]/
–
buttons so that the C value of
waveform (fig. 8-2) becomes 3.1 V V.
3. Press the [REVERSE] button and write the date to EEPROM
(IC402 on the MONITOR board).
q;
VCO Free Run
Setting:
Procedure:
1. In the “9 Gamma 2” status, connect a frequency counter to
the TP506 and TP513 on the MONITOR board.
2. Press the [MENU] button to display “VCO Free Run”, and press
the [REVERSE] button.
3. Adjust by pressing the [+]/
–
buttons so that the value of
frequency counter becomes 15.734 kHz
±50 Hz.
4. Confirm that the displayed screen is normally display.
5. Press the [REVERSE] button and write the date to EEPROM
5. Press the [REVERSE] button and write the date to EEPROM
(IC402 on the MONITOR board).
qa
Vertical Position
Procedure:
1. In the “q; VCO Free Run” status, input the monoscope signal
to the VIDEO INPUT jack (J301 on the POWER board).
2. Press the [MENU] button to display “PLL/V Pos”, and press
the [REVERSE] button.
3. Adjust by pressing the [+]/
–
buttons so that the vertical position
of screen on the monitor becomes the most suitable.
4. Press the [REVERSE] button and write the date to EEPROM
(IC402 on the MONITOR board).
qs
Horizontal Position
Procedure:
1. In the “qa Vertical Position” status, press the [MENU] button
to display “H Pos”, and press the [REVERSE] button.
2. Adjust by pressing the [+]/
–
buttons so that the horizontal
position of screen on the monitor becomes the most suitable.
3. Press the [REVERSE] button and write the date to EEPROM
(IC402 on the MONITOR board).
+
–
–
frequency counter
MONITOR board
TP506
TP513
TP513
+0.2
–0.1
–0.1
+0.2
–0.1
–0.1
+0.2
–0.1
–0.1
+0.2
–0.1
–0.1
+0.2
–0.1
–0.1
+0.2
–0.1
–0.1
+0.2
–0.1
–0.1
+0.2
–0.1
–0.1
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