Nikon VBA23001 Repair Manual page 187

④ Shading adjustment
The camera is faced to the color viewer (LV13 equiv.) with ND filter (-4 steps) being put between them. The
adjustment of white balance distribution is made for 3 areas [Area ① : Central 1936×1926-pixel area; Area
② : All the divided areas except ③ -areas after dividing (3890×2606-pixels) into (29×25-pixels); Area ③ ; 4
corners of (4×6-pixels) after dividing (3890×2606-pixel) into (29×25-pixels)].
Device
COLOR VIEWER
⑤ Gr/Gb compensation adjustment (R/B filter) (Line crawl adjustment)
Using the tool lens (F5.6), the camera is faced to the color viewer (LV13 equiv.) with SP3 (R filter) or SP1 (B
filter) being put between them, and the adjustment is made so that the difference in G output average between
B-G line and G-R line when the whole screen is divided in areas, can fall in the standard range.
Device
Area ①
1936×1926
J63070
D1 STANDARD LENS
J63070
COLOR VIEWER
J63087
FILTER SP3
- A105 ･ D90 -
Area ③ Area ③
4×6 4×6
Area ②
29×25
Area ③ Area ③
4×6 4×6
J61185
ND FILTER 4X 2 pieces
J61185
D1 STANDARD LENS
INC
VBA23001-R.3762.A
J18358
J63085
FILTER SP1