Nikon coolpix7900, Руководство по ремонту

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VAA46003-R.3659.A
- A39 ･ E7900 -
7 . Pattern box
Before using the pattern box, turn its power on to carry out "Aging" approx. 30 minutes: the color temperature should
be 3100 ± 20 K by the adjustment with the color meter, and the luminance should be 900 ± 20 cd/m 2 by the adjustment
with the luminance meter. When using the pattern box and for a while after its power turns off, the lamp and its
surroundings are subject to high temperatures, so care should be taken when handling.
• Procedure for correcting Pattern Box
Note: Be sure to perform the aging correction.
1 ) Measure the measuring point (center of diffusion plate) with the Color Meter (J 63081 ).
2 ) Adjust the pattern box so that the color temperature should be 3100
±
20 K by using "VR for adjustment of the color
temperature".
3 ) Measure the center of the diffusion plate with the Luminance Meter BM- 3000 (J 63068 ).
4 ) Adjust the pattern box so that the luminance should be 900 ± 20 cd/m 2 by using "Knob for luminance adjustment".
5 ) Repeat from 1 ) to 4 ) So that the color temperature should be 3100 ± 20 k and luminance should be 900 ± 20 cd/m 2
8 . Adjustments required when parts are replaced
Lens Adj. AWB
CCD
Defects
USB
Firmware
up
Initial image
data
Lens Unit ○ ○ ○ × × ×
Optical filter ○ ○ ○ × × ×
CCD ○ ○ ○ × × ×
CP- 1 ○ ○ ○ ○ ○ ○
○
Adjustment is necessary.
×
Adjustment is not necessary.
Power switch
VR for adjustment of
the color temperature
Knob for luminance
adjustment
Iris unit
Diffusion plate
Area to be measured