JVC GY-DV5000U Service Manual page 60

Measuring
No. Item instruments &
Input signals
BLACK Vectorscope
4
adjustment Lens cap
Oscilloscope
Lens cap
Oscilloscope
Lens cap
5 IN GAIN Gray scale chart
adjustment (just scanned)
Vectorscope
3-6
Measuring point (*)
Adjustment parts (-)
Mode
Adjustment level (+)
ADJUST MENU * MONITOR OUT
- SHUTTER dial
+ Position the noise
on the B-Y
the center of the
Vectorscope.
* MONITOR OUT
- SHUTTER dial
+ Position the noise
on the R-C
the center of the
Vectorscope.
B-Y axis
L
* MONITOR OUT
- SHUTTER dial
+ 0.053 ± 0.007V
R
R-C axis
Y
* CHROMA signal
from Y/C output
+ Less than 0.03Vp-p
ADJUST MENU * On screen value
(Gch Ref)
- Lens Iris
+ "280 ± 5"
* MONITOR OUT
- SHUTTER dial
+ Position the noise
on the R-C
the center of the
Vectorscope.
* MONITOR OUT
- SHUTTER daial
+ Position the noise
on the B-Y
the center of the
Vectorscope.
* CHROMA signal
from Y/C output
+ Less than 0.03Vp-p
Adjustment procedure
(1) Press the EDIT SEARCH+/- button to select
ADJUST MENU No.4."FPGA BLACK (B)".
(2) Rotate the SHUTTER dial to adjust to the speci-
axis at fied value.
L
(3) Then, Press the EDIT SEARCH+/- button to
select ADJUST MENU No.5."FPGA BLACK
(R)".
axis at (4) Rotate the SHUTTER dial to adjust to the speci-
Y
fied value.
(5) Then, press the EDIT SEARCH+/- button to
select ADJUST MENU No.6."MASTER
BLACK".
(6) Rotate the SHUTTER dial to adjust black level
to the specified value.
(7) Check the CHROMA signal (from Y/C output)
to confirm that the carrier leakage should be
specified level.
(1) Press the EDIT SEARCH+/- button to select
ADJUST MENU No.7."IN GAIN (G)".
(2) Shooting the Gray scale chart, and adjust the
lens iris so that the Gch Ref DATA display is
specified value.
(3) Press the EDIT SEARCH+/- button to select
ADJUST MENU No.7."IN GAIN (R)".
axis at
Y
(4) Rotate the SHUTTER dial to adjust to the speci-
fied value.
(5) Press the EDIT SEARCH+/- button to select
ADJUST MENU No.7."IN GAIN (B)".
axis at
L
(6) Rotate the SHUTTER dial to adjust to the speci-
fied value.
(7) Check the CHROMA signal (from Y/C output)
to confirm that the carrier leakage should be
specified level.