Nikon D100 VBA10201 Repair Manual page 73

7. Outline of adjustment
The outline of each adjustment is as follows.
• CCD-EEPROM Flashram up
The values of CCD EEPROM on the CCD PCB are copied into the Flash-RAM of the compression record PCB
(AK PCB). The adjustment values about image are stored in EEPROM on the CCD PCB. The camera expands
the values recorded in Flash-RAM of the AK PCB for RAM to operate without accessing CCD EEPROM
directly. To make use of the adjustment values, you must copy the values stored in CCD EEPROM into
Flash-RAM.
• TFT-EEPROM Flashram up
The values of TFT EEPROM are copied into the Flash-RAM in the same way as above.
• Sensitivity adjustment
The output "G" of CCD is adjusted. According to the output "G" of ISO200 acquired by the reference camera,
the aimed value of each ISO sensitivity is calculated and adjustment is performed against the calculated value.
In fact, the inclination of sensitivity is obtained by using the adjustment values of ISO200 and ISO1600 and
besides the medium correction values are calculated.
• CCD GrGb level compensation adjustment
The adjustment values are obtained to correct the difference between the output "Gr" and "Gb" when showing
the blue and red charts.
• Color sensitivity ratio adjustment
The "R/G/B" output ratio of CCD is adjusted. The output "R" and "B" is adjusted based on the output "G" to
be the same as the color balance (G/R ratio, G/B ratio) acquired by the reference camera.
• Open aperture sensitivity compensation
The sensitivity and sensitivity ratio which are changed depending on aperture are adjusted. The adjustment
value is calculated by the ratio of R, G and B when release is done with the aperture of F8 and F1.4. With other
aperture values except F1.4 and F8, the adjustment values are calculated by using the values of F1.4 and F8.
• Built-in speed light adjustment
The flash level of speed light built in the camera is adjusted. When the distance is 1.4m between the camera
and standard reflect paper, the flash level of the pre-flash and main flash is adjusted according to the output "G"
level of CCD.
• TFT display position adjustment
The display position of TFT is adjusted. Adjustment is done with each video mode of NTSC and PAL.
• CCD defect compensation
The CCD pixel defect information is written in the camera. The light from the mount is shielded and release is
done. If the pixel output is beyond the standard value at that time, the pixel is recognized as "defect".
- A43 ･ -
VBA10201-R.3577.A