Nikon VBA23001 Repair Manual page 210

Inspection standards
Items
External view
Step
(height difference)
Gap
Size / Force
Shutter release button
Aperture lever
Main mirror
Sub-mirror
∞ Infinity focus
Judgment standard
Btwn top cover & apron: 0.2 mm or less
Other parts: 0.3 mm or less
Moving parts: 0.5 mm or less
Btwn Top cover & Apron, I/F cover , back cover : 0.2 mm or less
Btwn Top cover & Apron, I/F cover : 0.2 mm or less
SB case & Top cover; SB case & Apron (when built-in speedlight is
stored) : 0.3 mm or less
Other parts: 0.3 mm or less
Moving parts: 0.5 mm or less
Protrusion: 1 ± 0.2 mm
Halfway pressing force: 0.98±0.49 N (100±50gf)
Halfway pressing stroke: 0.6 ± 0.25 mm
Releasing force: 2.55±0.69 N (260±70gf)
Releasing stroke: 0.8±0.25 ㎜
Extra stroke after releasing button: 0.6 mm or more
Difference btwn Half-releasing and Full pressing force:
0.5Nor more (51gfor more）
3.4 height: 3.4 +0.2/-0.1 mm
45 ゜ angle: Up-down ± 10'
Right-left ± 30'
Distortion: 8' or less
Clearance for up-mirror in mirror box: None
59 ゜ angle: ｺﾘﾒｰﾀ測定値 0±20'
Distortion: 8' or less
± 100μm
- R1 ･ D90 -
INC
VBA23001-R.3762.A
Remarks
Visual check
Digital micrometer
Visual check
Thickness gauge
Digital micrometer
Tension gauge
3.4 height gauge
Collimator
Main mirror tool
Visual check
Feeling in hand
Sub-mirror tool
Collimator
∞ Focs lens