Nikon AF-S VR DX Zoom Nikkor 18-200/3.5-5.6G ED, Руководство по ремонту

Страница: 27 / 98

JAA79471-R.3678.A
- A10 ･ AF-S VRDX18-200/3.5-5.6G -
● When the MR head is disassembled and replaced, be sure to make an adjustment.
1. Device:
・
Single-output rated voltage power-supply 1 unit: 5V 100mA
・
Oscilloscope 1 unit
・
Self-made tool 1 unit
Caution:
If there is a problem with continuity between the contacts of the self-made tool and the relay FPC,
the contacting surface of the relay FPC may be dirty, eroded, or oxidized. So polish the contacts and
connect them.
2. Preparation of the lens for measurement
・
Assemble the MR-head-attached zoom index ring unit, the SWM, and the MF ring into the lens body.
Then connect the assembled lens to each measuring machines as follows:
(GND)
(
＋
)
PCB (Back)
PCB (Front)
To back
side
Caution:
The connector of the back of
the PCB is not used.
Inspection and adjustment of output waveform of MR encoder
・
【
Attachment diagram
】
Oscilloscope (2ch)
Oscilloscope (1ch)
Rated voltage power-supply (+)
Rated voltage power-supply (-)
Rated voltage power-supply
Set value
5.0 V
100 mA
Oscilloscope
(2ch type)
Self-made tool
・
How to inspect and adjust:
①
Confirm that the electric current and voltage of the connected rated voltage power-supply are set values, then
turn it ON.
②
Set the oscilloscope, and turn the MR ring.
Note : The waveform varies according to the rotational speed of the focus ring. So change "Time/Div” setting
accordingly.
INC