Nikon D3100 VBA28001 - Inspection Standards

VBA28001-R.3813.A
- R1 ・ D3100 -
Inspection standards
Items Judgment standard Remarks
External view
Step
(height in difference)
Gap
Top cover & apron, Top cover & rear cover: 0.2 mm or less
IF cover & cover : 0.2 mm or less
Other parts than the above: 0.3 mm or less
Moving parts: 0.5 mm or less
Top cover & Apron, Top cover & rear cover: 0.2 mm or less
SB case & Top cover; SB case & Apron (when built-in ash unit is
housed) : 0.5 mm or less
Other parts than the above: 0.3 mm or less
Moving parts: 0.5 mm or less
Visual check
Digital micrometer
Visual check
Thickness gauge
Size / Force
Shutter release button
Aperture lever
Main mirror
Sub-mirror
∞ Innity focus
Protrusion: 1.23 ± 0.2 mm
Halfway-pressing force: 0.98 ± 0.49 N (100 ± 50gf)
Halfway-pressing stroke: 0.5 ± 0.2 mm
Releasing force: 2.55 ± 0.69 N (260 ± 70gf)
Releasing stroke: 0.7 ± 0.25 mm
Full pressing stroke: 0.25 ± 0.1 mm from pressing halfway
Difference btwn half-pressing and releasing force:
0.5N or more (51 gf/gram-force or more
）
3.4 height: 3.3 - 3.6 mm
45° angle: Up-down ± 10'
Right-left ± 30'
Distortion: 8' or less
Gap of up-mirror in mirror box: None
51° up-down angle: Up-down 0 ± 20'
Distortion: 8’ or less
± 100μm
Digital micrometer
Tension gauge
3.4 height gauge
Collimator
Main mirror tool
Visual check
Feeling in hand
Sub-mirror tool
Collimator
∞ Focus lens
User ID:INC