Nikon AF-S Zoom-Nikkor ED70-200mm f/2.8G IF, Repair Manual, Page: 25 / 100

JAA78151-R.3584.A
- L22 ･ AF-S VR 70-200/2.8G -
・How to conduct inspection and adjustment
①
Make sure that the current and voltage of the connected rated voltage power supply are set values.
If they meet the set values, turn on the power.
②
Set the oscilloscope and drive the focus ring by hand.
Note：
Since the shape of waveform varies according to the driving speed of B61, particularly and properly set
Time/Div.
③
In case of detecting any wider waveform noise, use the filter function.
How to set the filer function in the employment case of Yokogawa-manufactured DL1540
１．
Press the filter button.
２．
Select "Smooth" in the menu on the PC screen.
Standard：
The amplitude of every pulse/waveform should be 50mV or more.
Note：
Check the waveform by letting the B61 to travel from the infinity-end position to the near distance end position
and vice versa.
C H 1 = 2 0 m V C H 2 = 2 0 m V 5 m s / d i v
A C 1 0 : 1 A C 1 0 : 1
NORM 200KS/s
● Setting of oscilloscope
V/Div（CH1） ：２０ｍＶ
V/Div（CH2） ：２０ｍＶ
Coupling ：ＡＣ
Time/Div ：５m Sec
Trigger Mode ：NORMAL
Trigger Coupling ：ＡＣ
Trigger Source ：ＣＨ１
Trigger Position ：＋４div
Trigger Type ：EDGE
Trigger Level ：０Ｖ
INC