Service manual

34
VL-A111U/AH131U
VL-AH151U/AH161U
6-7-3-6. Black balance, AF noise level adjustment
1) Write ADD:71 DATA:01.
2) Press the “STOP” key to reconfirm ADD “71”. Adjustment is completed when “FF”
is returned to DATA.
Mode CAM ADJ
Measuring instrument —
Subject Not specified
Measuring point —
Adjustment address 71
Adjustment reference 01
6-7-3-7. White balance adjustment (Indoor)
[Presetting]
1) Maximize the gain of the vector scope so that the source comes to the intersection
of R-Y and B-Y axles in the no signal state.
2) Connect the vector scope to VIDEO OUT and terminate it at 75Ω.
3) Record the gray scale (JIGCHART-1).
1) Write DATA “70” in ADD “70” and enter the camera adjustment
mode.
2) Vary ADD “00” data to adjust it to the specification.
3) Vary ADD “02” data to adjust it to the specification.
4) Repeat steps 2) - 3) to bring the source into the minimum focus.
5) After confirming the adjustment above, write ADD:70 and DATA:FF
and exit the camera adjustment mode.
Mode CAM ADJ
Measuring instrument Vector scope
Subject Gray scale
Measuring point VIDEO OUT
Adjustment address 00, 02
Adjustment reference Minimum focus
6-7-3-8. White balance adjustment (Outdoor)
[Presetting]
1) Maximize the gain of the vector scope so that the source comes to the intersection
of R-Y and B-Y axles in the no signal state.
2) Connect the vector scope to VIDEO OUT and terminate it at 75Ω.
3) Record the gray scale (JIGHOYA-LB165).
4) Mount the color conversion filter on the lens.
1) Write DATA “00” in ADD “70” and enter the camera adjustment
mode.
2) Vary ADD “6C” data to adjust it to the specification.
3) Vary ADD “6E” data to adjust it to the specification.
4) Repeat steps 2) - 3) to bring the source into the minimum focus.
5) After confirming the adjustment above, write ADD:70 and DATA:FF
and exit the camera adjustment mode.
Mode CAM ADJ
Measuring instrument Vector scope
Subject Gray scale
Measuring point VIDEO OUT
Adjustment address 6C, 6E
Adjustment reference Minimum focus
6-7-3-9. Color adjustsment
[Presetting]
1) Set the source at the intersection of R-Y and B-Y axles in the no signal state.
2) Connect the vector scope to VIDEO OUT and terminate it at 75Ω.
3) Record the color bar (JIGCHART-4).
1) Write DATA “00” in ADD”70” and enter the camera adjustment
mode.
2) Vary ADD “1C4” data to adjust it to the specification.
3) Vary ADD “1C2” data to adjust it to the specification.
4) Vary ADD “1C0” data to adjust it to the specification.
5) Vary ADD “1BE” data to adjust it to the specification.
6) Repeat steps 2) - 5) and adjust Gain and Phase of R and B to the
specification.
7) After confirming the adjustment above, write ADD:70 and DATA:FF
and exit the camera adjustment mode.
* Be sure to set ADD:70 CAM ADJ data to “FF” after adjusting the camera circuit section.
Mode CAM ADJ
Measuring instrument Vector scope
Subject Gray scale
Measuring point VIDEO OUT
Adjustment reference
ADD Item SPEC
1C4 R-Gain 1.75 ± 0.1 times (burst ratio)
1C2 B-Gain 1.05 ± 0.1 times (burst ratio)
1C0 B-Phase 340 ± 2°
1BE R-Phase 102 ± 2°
R-Y
B-Y
Set the gain of the vector
scope so that BURST runs
over the circumference.
R-Y
B-Y
Set the gain of the vector
scope so that BURST runs
over the circumference.
R-Y
B-Y
Gain
BURST:R:B=1.00:1.75:1.05
BURST
102°
340°
B
R