Angle Inspection And Adjustment Of Main Mirror And Sub-Mirror - Nikon D80 VBA14001 Repair Manual

Angle inspection and adjustment of Main mirror and sub-mirror

Device:
1.Main mirror 45° inspection and adjustment
① Collimator (J19110)
② Reflection mirror (J18389)
③ Optical parallel (J18037-2)
④ Hexagonal wrench
(J18037-2)
J0
(J18389)
J
Standard:
Main mirror
Left-right
± 25'
deviation
Up-down
± 10'
deviation
8'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 an adjustment by turning the
eccentric pin with Hexagonal wrench.
・ In case the the result of checking up-downward and right-leftward deviation is out of standard, the front plate
area or mirror unit should be defective.
・ In case inspection and adjustment are made only with the front body, check again after assembling the front
body into the rear body.
Collimator
Bayonet
Eccentric pin for
the main mirror
Main mirror
Sub-mirror
＿＿
+5 ± 5'
8'or less
- Ａ  ･
2.Sub-mirror 59° inspection and adjustment
① Collimator (J19110)
② 59° mirror tool (J18409)
③ Hexagonal wrench
(J18409)
J
Eccentric pin for
the sub-mirror
Width of line indicates deviation
Up-down
Reference line
-
VBA14001-R.3694.A
Collimator
Bayonet
Sub-mirror
Left-right