In Case 193.5-Mm Collimator Is Used - Nikon ED 17-55mm f/2.8G IF Repair Manual

【In case 193.5-mm Collimator is used】

(1) Device
・ 193.5-mm Collimator
・ AF-S17-55 front-lens-group center alignment stand (J19130)
・ MEGALIGHT 100 (included in the periphery alignment equipment
(J19125)）
・ Pinhole chart (included in the center alignment equipment (J19126))
(2) Prepare Stand for front lens group center alignment
・ Attach the pinhole chart to the front-lens-group center alignment stand.
・ Insert the fiber-optic cable that comes from MEGALIGHT 100 into the pinhole chart.
(3) 1st Lens group alignment
1) Position the 4th lens group with the 4th lens alignment tool (J11305). (ref. Page L37)
2) Mount the lens to be inspected by aligning its index with " △ "-mark of the stand. Then turn the lens to "●"
so that the aperture is fully open.
3) Set the zoom ring to Tele-side.
4) Turn the power of "MEGALIGHT 100" to ON. Rotate the "LIGHT CONT." knob of "MEGALIGHT
100" to adjust brightness so that the image of pinhole can be checked by the collimator. Then turn the focus
ring of the lens to adjust the shape.
5) Check the optical axis. If it is the case except Fig.1 ① of the previous page, loosen 3 screws (#63) and adjust
the G1 lens in the direction shown in Fig.2 of the previous page.
6) When it becomes as shown in Fig. 1 ① , fix the G1 lens with 3 screws (#63).
Additional page
- L42-1･ AF-S 17-55/2.8G -
INC
JAA78851-R.3617.A
LIGHT CONT.knob
November. 4. 2004