Nikon VBA23001 - Angle Adjustment of Main Mirror and Sub-Mirror

VBA23001-R.3762.A
- A23 ･ D90 -
・
Main-mirror 45° adjustment
Caution: Before and after the adjustment, check the accuracy by moving the main mirror up- and downwards a few times.
①
Check for the right-left deviation
In case the result is out of standard, loose the three screws (#1520), then make the adjustment by moving the eccentric
pin for right-left adjustment.
②
Check for the up-down deviation.
In case the result is out of standard, make the adjustment by turning the eccentric pin for the main mirror.
・
Sub-mirror 59° adjustment
Caution: Before and after the adjustment, check the accuracy by moving the main mirror up- and downwards a few
times. Conrm if the two-pronged part of the sub-mirror rmly ts in the eccentric pin.
*
Check for the up-down deviation
In case the result is out of standard, make the adjustment by turning the sub-mirror eccentric pin.
Angle adjustment of Main mirror and sub-mirror
①
Mirror angle-inspection tool
Caution: Do NOT release the shutter.
Set the (supplied) tilted mirror with the main mirror being slightly lifted so that the sub-
mirror of D90 does not touch the (supplied) tilted mirror of the inspection tool.
※
Procedure: Follow the operating instructions of the tool for main/sub mirror angle-inspection (J19132).
ｻﾌﾞﾐﾗｰ上下
調整偏芯ﾋﾟﾝ
主ﾐﾗｰ上下
調整偏芯ﾋﾟﾝ
主ﾐﾗｰ左右
調整偏芯ﾋﾟﾝ
B545止めﾋﾞｽ
BB545 attaching screw
BSub-mirror up/down
adjusting eccentric pin
BMain-mirror up/down
adjusting eccentric pin
BMain-mirror right/left
adjusting eccentric pin
Screw (#670)
×
4
△（Revision）
Changed page △× 2
the four screws (#670)
△（Revision）
October. 2. 2008
INC