Nikon AF-S VR Zoom-Nikkor ED 24-120mm f/3.5-5.6G IF, Руководство по ремонту

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JAA78271-R.3598.A
- L28 ･ AF-S VR24-120/3.5-5.6G -
Ｈ
Ｌ
Sandard
Ｈ：Ｌ＝
100
：
206
～
206
：
100
（
50
％
±17.3
％）
ADJUSTMENT OF MR DUTY
●In case of replacing the main PCB, SWM unit and MR encoder unit, be sure to make adjustments.
How to adjust
①
Make sure that the electric current and voltage of the connected rated voltage power supply are set to the set
values. Then, turn the rated voltage power supply ON for the contacts A and F.
②
Select "1. MR DUTY ADJUSTMENT" in the menu of the AF-S zoom lens (New) inspection program.
③
The confirmation screen for writing the fixed values in EEPROM appears. Select the appropriate item.
④
Following the instruction on the screen, rotate the MF ring slowly by hand in the direction from the infinity to the
close distance position. Make sure that the waveform on the oscilloscope has duty 50% and stop the MF ring at
the close distance-end.
● Setting of oscilloscope
V/Div
（
CH1
） ：
5V
V/Div
（
CH2
） ：
5V
Coupling
：
DC
Time/Div
：
5 m Sec
Trigger Mode
：
NORMAL
Trigger Coupling
：
DC
Trigger Source
：
CH
１
Trigger Position
：
+4 div
Trigger Type
：
EDGE
Trigger Level
：
2.5 V
⑤
Following the instruction on the screen, rotate the MF ring slowly by hand in the direction from the close distance
to the infinity position. Make sure that the waveform on the oscilloscope has duty 50% and stop the MF ring at
the infinity-end.
Note
：
In case the waveform from infinity to close distance position or vice versa does not have duty 50%, repeat
"INSPECTION AND ADJUSTMENT OF THE MR ENCODER OUTPUT WAVEFORM" on Page L15.
C H 1 = 5 V C H 2 = 5 V 5 m s / d i v
D C 1 0 : 1 D C 1 0 : 1
NORM 200KS/s
INC