Angle Adjustment Of Main Mirror And Sub Mirror - Nikon D3 VBA18001 Repair Manual

Angle adjustment of Main mirror and Sub-mirror
※ Procedure: Follow the operating instructions of the tool for main/sub mirror angle-inspection (J19132).
・Main mirror 45° adjustment
Cau�i��: 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 screws of "Fig.1" and make the adjustment by moving the main
mirror-shaft base plate.
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 of
"Fig.2".
・Sub-mirror 54° adjustment
Cau�i��: Before and after the adjustment, check the accuracy by moving the main mirror up-and downwards a
few times. Confirm that the two-pronged part of the sub-mirror firmly fits in the eccentric pin.
① Check for the up-down deviation
In case the result is out of standard, make the adjustment by turning the eccentric pin for the sub-mirror of
"Fig.2".
＜ Device ＞
1. For Main mirror adjustment
① Mirror angle inspection tool
② 45° angle mirror tool
③ Hexagonal wrench (φ1.5mm）
2. For sub-mirror adjustment
① Mirror angle inspection tool
② Hexagonal wrench (φ1.5mm）
＋
Fixation screw
Main mirror-shaft base plate
< Standard value >
－
Fig.1
Left-right
deviation
Up-down
deviation
Distortion
- Ａ  ･
① Mirror angle-inspection tool
Eccentric pin for the
sub-mirror
Eccentric pin for the
main mirror
Main mirror
0±10'or less
±5'or less
5'or less
-
logo Q0440 forGraphic
070518 Gdesign ito
INC
VBA18001-R.3719.A
Fig.2
Sub mirror
-
-5±5'
6'or less