JVC GY-DV500U Service Manual page 20

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ERROR DETECT START
When this item is selected and the SHUTTER dial is pushed,
the white blemish detection for correcting CCD white blemish
starts automatically.
The following messages are displayed on the viewfinder screen
during detection.
ERROR DETECT EXECUTING
ERROR DETECT END
After the completion of error detection, the camera is automati-
cally set to the white blemish correction ON condition.
The following types of white blemish can be corrected.
(1) White blemish correction target area
5%
5%
Correction target area
Fig. 1-11-2
(2) Details of correctable white blemishes
White blemishes at luminance levels of 30 mV or more
can be corrected. The total number of white blemishes
that can be corrected is up to 7 for the R, G and B signals.
Even when there are 2 white blemishes on a single scan-
ning line, both of them can be corrected. (However, when
they are adjacent, the results of a correction appear infe-
rior to those of the results of the correction of a single
white blemish. These results are due to the correction char-
acteristics themselves.)
WHITE CLIP
The white clip level of the through-camera composite output
signal that is output at TEST OUT can be selected from the fol-
lowing 2 values:
100% or 108% (shipment setting)
90%
90%
1.11.2 System Reset
While pushing the [SHUTTER] dial, press the [POWER] switch
to ON. This resets the system and initializes the menu set items
to their default values.
The following description shows items that are initialized to the
defaults by a system reset and those that are not.
1.11.3 Resetting DSP Data
While pushing the [SHUTTER] dial and [STATUS] switch tilted
toward "SKIN AREA", press the [POWER] switch to ON. This
resets the internal setting data (color matrix setting data) in the
DSP to the default setting.
1.11.4 Displaying Auto Iris Area Gate
While holding the [AUTO WHITE/ACCU FOCUS] switch down
(toward ACCU FOCUS), press the [POWER] switch to ON. The
area gate for the auto iris control is displayed in the viewfinder
screen.
Fig. 1-11-3
1.11.5 List of Servicing Switches (Camera)
The following table that shows the switches described above is
for use in servicing. Use this table as a reference in servicing.
Switch Operation
[AUTO WHITE] + [POWER] ON
[SHUTTER] + [POWER] ON
[STATUS] + [SHUTTER] + [POWER] ON
[ACCU FOCUS] + [POWER] ON
Table 1-11-4
Result
Service menu display
System reset
DSP data reset
Area gate display
1-15

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