Inspection Of Lens Operations; Inspection Item - Nikon AF-S Zoom-Nikkor ED 24-70mm/F2.8G (IF) Repair Manual

Inspection of Lens operations

Check the lens operations by using a PC after assembling.
○ Check on PC
● Inspection item:
1. GMR encoder operations
・Perform the scanning-drive of lens and check the total number of pulses.
・In case the GMR encoder is defective, the number of pulses becomes out of standard.
2. Lens driving stop accuracy
・Check the number of overrun/underrun pulses (deviation of the stop position from the target position) per
the specified lens driving amount specified lens driving amount. specified lens driving amount
3. Lens driving time
・Check the drive time (from starting and stopping the drive) by using the oscilloscope when the specified
lens is driven.
4. Switches and lens condition
・Check the positions of the focus encoder, zoom encoder, and focus mode.
- Ａ 48・AF-S 24-70/2.8G -
INC
JAA80251-R.3723.A