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(4) Inspection of lens-servo time
Make this inspection on both focal length 70mm (W) and 300mm (T).
Select the servo driving amount respectively. Each lens-servo drive time must be within the standard.
Caution：If the MF ring is rotated during inspections, the waveform shows an abnormal value. Do NOT touch
the MF ring during inspections.
This inspection must be made at the following 5 lens positions with the focal length [both 70 mm (W)
and 300 mm (T)].
Front lens group 90° angle upward
Front lens group 90° angle downward
E terminal
H terminal
Servo driving time
E terminal
H terminal
Servo driving time
(Lens position in inspecting)
Lens inclination
Horizontal
- A39 ･ AF-S VR 70-300/4.5-5.6G -
Position of index window
Up, right and left
●Oscilloscope setting
V/Div
Coupling
Time/Div
Trigger Mode
Trigger Coupling
Trigger Source
Trigger Position
※ The waveforms of E and H terminals have the
forms for going up for start and going down for
start.
INC
JAA79551-R.3690.A
：5V
：DC
：20 m Sec
：SGL (S)
：DC
：CH1
：-4div
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