Nikon ED 17-55mm f/2.8G IF Repair Manual page 56

⑨ Unlock the holder-moving lever and move the holder down slowly by the lever. Insert the alignment screw-
drivers (long, middle, short) into the screw holes of the 4th lens chamber.
Note) Because the screws cannot be seen, when inserting the alignment screwdrivers, put them straight down in
the screw holes so that the screws can be easily found.
⑩ Rotate the micrometers (X and Y), and shift the cross lines by the scales that were results of the chart
shooting of the 4th lens group alignment.
(e.g. Refer to "Pic.2" for the case of <X directions:+1, Y directions:-1>)
⑪ Fix the 3 screws of the 4th lens chamber with the alignment screwdrivers. Move the holder-moving lever up
to lock the holder.
⑫ Check that a shift length caused by the cross lines and the X/Y lines is equal to the scales (1 = 1 scale of the
calibrated cross lines) of the results of "Chart shooting of the 4th lens group alignment". (ref. Pic.1)
Note: After fixing the 3 screws of the 4th lens chamber, if a shift length is different from the results of
the chart shooting, repeat the procedure from ⑨ to ⑫ until they become equal.
⑬ Turn each power of the Monitor, LINE GENERATOR,and MEGALIGHT 100 to OFF. Remove the lens
from the equipment (for periphery).
Then go back to "(2) Chart shooting of the 4th lens group alignment" and repeat the procedure (2) and (3)
until the result becomes "END".
Additional page
Pic.1
- L42-12 ･ AF-S 17-55/2.8G -
INC
JAA78851-R.3617.A
November. 4. 2004