Adjustment; Adjustment For Electric Device; Vr Adjustment - Nikon AF-S 28-300mm f/3.5-5.6G ED VR Repair Manual

Adjustment

Adjustment for electric device

When the main PCB unit, SWM unit, or GMR unit has been replaced, it is necessary to make adjustments by
the "adjustment software" for electrical device ( ★ J18489).
After the assembly, be sure to make the below inspections on lens operations.
Inspection items
・ Inspection of GMR-encoder Operations
Activate the scanning drive of lens and check all the pulse numbers.
If GMR encoder is defective, the pulse number will be out of standard.
・ Inspection of Lens Driving Stop Accuracy
Check the overrun/underrun pulse number, relative to each lens drive amount, (i.e. deviation amount of the
stop position from the target position).
・ Inspection of Lens Driving Time
Using an oscilloscope, check the each driving time (from starting to ending of servo-motor driving).
・ Inspection of Lens switches and Lens condition
Check ON/OFF operations of each switch, and the operating condition of focus encoder.
Refer to "Software manual of lens adjustment for electrical device" for details.

VR adjustment

When the main PCB unit (including gyro-sensor) or VR unit has been replaced, it is necessary to make
adjustments by the "adjustment software (VR)" ( ★ 18490) using the
As for this product, the adapter to be used when the lens is fixed on [J15380] is [J15380-14].
The settings of [J15380] at the time of VR gyro-adjustment are as follows:
Frequency
Refer to "Software manual of lens VR adjustment" for details.
User ID:uncf8224
Vibration angle
3.0Hz ± 0.2 deg.
- A53 ・ AF-S 28-300mm f/3.5-5.6G ED VR-
18489). ).
or VR unit has been replaced, it is necessary to make has been replaced, it is necessary to make
) using the using the "inspection tool for VR lens" (J15380).
JAA80851-R.3811.A
★ � � New tool