Nikon D80 VBA14001 Repair Manual page 96

(7) Pixel defect compensation - black point
When pixels of which the output level is under specified value with LV13 equiv., are detected, the
coordinates of the detected pixels are rewritten as pixel defect compensation data.
(8) Pixel defect compensation - white point
Shots are taken on the dark surface. In case the pixel output is found to be beyond the standard value, the
detected pixel coordinate is additionally written as the pixel defect compensation data.
(9) Getting of reference values
・Sensitivity reference value calculation
The reference body is faced to the color viewer of LV13 equiv. with the ND filter (-5 step) being put
between them. Then, store the G output average value of the center (425 pixels × 425 pixels) is stored in
the D80BSD.DAT file as the sensitivity reference value.
・Sensitivity ratio reference value calculation
The reference body is faced to the shutter tester of LV 9 equiv. (without filter) and LV13 equiv. (without
filter). Then, the sensitivity ratio reference value GR and GB is calculated, based on the G/R/B output
average of the center (425 pixels × 425 pixels), and they are stored in the D80BSD.DAT file.
It is necessary to calculate the reference values of "Sensitivity" and "Sensitivity ratio" in order to prevent
the color temperature fluctuation caused by color viewer's changes over time from affecting the results of
the shooting image adjustment. By using the reference body, calculate the reference values once in about
every 3 months, when the fluorescent of the color viewer is replaced.
(10) Factory default setting
By reset the settings of camera, factory default settings are restored.
Select the language and video mode to perform.
Because this setting of RP DG-PCB is blank, be sure to set the initial default setting when the DG-PCB is
replaced.
When this setting is used, the USB mode is set to "Mass Storage" mode.
(11) Checking of adjustment value
The adjustment value is confirmed, functioning as substitute for the traditional "READING AND
REWRITING OF EEPROM DATA.".
(12) Reading of RISC version
The RISC firmware version is displayed.
(13) TFT adjustment
Flickering, color and luminance of TFT are adjusted.
※ Whenever the DG-PCB and TFT monitor are replaced, be sure to perform "REWRITING THE TFT
FIXED VALUE.".
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VBA14001-R.3694.A