Angle Inspection And Adjustment Of Main Mirror And Sub-Mirror - Nikon VBA23001 Repair Manual

Angle inspection and adjustment of Main mirror and Sub-mirror

Device:
1. Main-mirror 45°-deg. angle inspection and adjustment
① Collimator (J19110)
② Reflection mirror (J18389)
③ Optical parallel (J18037-2)
④ Hexagonal key
(J18037-2)
J18037
(J18389)
J18362
Standard:
Main mirror
Left-right
±10'
deviation
Up-down
±5'
deviation
6'or less
Distortion
Caution:
・Before and after the adjustment, check the accuracy by moving the main mirror up- and downwards a few times.
・Check for the up-down deviation. In case the result is out of standard, make the adjustment by turning the eccentric pin
with Hexagonal wrench.
・In case up-down/left-right deviation is out of standard, the defects in front plate unit or mirror unit are possible.
・If the inspection & adjustment were made only for the front body, assemble it into the rear body and make the
inspection & adjustment again.
Collimator
Bayonet
Eccentric pin for
the main mirror
Main-mirror
Sub-mirror
＿＿
±10'
6'or less
- A22 ･ D90 -
2. Sub-mirror 59°-deg. angle inspection and adjustment
① Collimator (J19110)
② Sub-mirror 59° angle tool (J18409)
③ Hexagonal key
(J18409)
J18324
Eccentric pin for
the sub-mirror
Up-down
Reference
line
INC
VBA23001-R.3762.A
Collimator
Bayonet
Sub-mirror
Width of line
indicates deviation.
Left-right