Inspection And Adjustment Of Gmr Output Waveform - Nikon AF-S Zoom-Nikkor ED 24-70mm/F2.8G (IF) Repair Manual

Inspection and Adjustment of GMR output waveform

● When the GMR unit is disassembled and replaced, be sure to make the inspection and adjustment.
1. Device:
・Single-output rated voltage power-supply
・Oscilloscope
・GMR output inspection tool
Caution:
If there is a problem with continuity between the contacts of the GMR output inspection
tool (J11341) 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
・Connect the fixed tube, which has GMR unit assembled, to each measuring instrument.
J4
Rated voltage
power-supply(-)
Rated voltage
power-supply(+)
Oscilloscope (2ch)
Oscilloscope (1ch)
J11341
- Ａ 22・AF-S 24-70/2.8G -
1 unit: 5V 100mA
1 unit
1 unit J11341
Rated voltage
power-supply
(GND)
( ＋ )
INC
JAA80251-R.3723.A
Set value
5.0 V
100 mA
Oscilloscope
(2ch type)