Sony DSR-20MD, Service Manual

Page: 175 / 225

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3. Encoder B-Y Input Level Adjustment (JC-19 Board)
Mode E-E
Signal Color bar (DV input) (Note 1)
Measurement Point Video output terminal
Measuring Instrument Vectorscope
Adjustment Element page: D, address: 35
Specified Value
Phase : 348 ± 2º
Gain : 66 ± 5%
Note 1:
Generate color bar signal with NTSC: DCR-VX1000/
PAL: DCR-VX1000E and enter it to the DV terminal.
(How to generate color bars: Connect the adjusting re-
mote commander to the NTSC: DCR-VX1000/PAL:
DCR-VX1000E, and set data: 09 to page: 5, address:02.
After adjustment, be sure to return the data to “00”.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Adjust the burst luminance point to the specified position us-
ing the PHASE and GAIN knobs of the vectorscope.
3) Select page: D, address: 35, change the data, adjust a blue lu-
minance point to the specified position (inside of thick frame).
4) Select page: 0, address: 01, and set data: 00.
Fig. 5-3-30. Fig. 5-3-31.
4. Decoder HUE Input Adjustment (JC-19 Board)
Mode E-E
Signal Color bar (S VIDEO input) (Note 1)
Measurement Point Video output terminal
Measuring Instrument Vectorscope
Adjustment Element RV207
Specified Value
Phase : 104 ± 1º
Gain : 95 ± 5%
Note 1:
Set “S VIDEO” mode with the INPUT SELECT button
on the front panel.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 10, and set data: 20.
3) Adjust the burst luminance point to the specified position us-
ing the PHASE and GAIN knobs of the vectorscope.
4) Adjust RV107 so that a red luminance point comes to the speci-
fied position (inside of thick frame). At this time, confirm that
other color luminance points are inside each phase specified
frame (± 2).
5) Select page: 2, address: 10, and set data: 00.
4) Select page: 0, address: 01, and set data: 00.
Note: When a red luminance point and a blue luminance point
are not at the specified positions, adjust RV204 and RV206
so that they come to the specified positions respectively.
For NTSC model For PAL model
R–Y
B–Y
B
G
Burst
C
Y
Y
L
R
M
G
: FOR DECODER HUE INPUT ADJUSTMENT
: FOR ENCODER
B-Y INPUT LEVEL
ADJUSTMENT
M
G
B–Y
R
R–Y
B
Y
L
Burst
G
C
Y
: FOR DECODER HUE INPUT ADJUSTMENT
: FOR ENCODER
B-Y INPUT LEVEL
ADJUSTMENT