Check The Performance And Resolution - Nikon Coolpix 4300 Repair Manual

CHECK THE PERFORMANCE AND RESOLUTION

Be sure to check when dissemble and repair the lens-barrel
(1) Check the performance
Repeat the following performance several times: After tuning the power switch ON and driving the zoom,
turn it OFF.
Confirm that there is no abnormal operation by repeating to check the release performance several times.
(2) Check the resolution
By photographying the high-definition resolution chart (J63079), confirm that the TV lines are within the standard.
Standard for the TV lines: more than 1100 TV lines in the Center; more than 750 TVs in the 4 corners.
(ref.：The resolution is based on the unit of TV lines that are black-and-white strips distinguished in the TV screen.)
(a) The camera is set as follows to take photos: Shooting-mode: Auto, Image quality mode: FINE, Image
size: 2272, Flash mode: Flash cancel
(b) The uneven pattern in luminance of the chart does not affect, but photograph with the luminance
(ISO100, 1/15-1/250) by which the aperture is open.
(c) Check the zoom position in the order of WIDE, MIDDLE (press the button 6 times starting from WIDE)
and TELE.
The object distance is WIDE: approx.65cm, MIDDLE: approx.115cm, TELE: approx.185cm. Set the
chart fully screened in the LCD of the camera, and fix on a tripod.
(d) Open the photographed image by Photoshop, and confirm it by the magnified display, e.g. 100%, etc.
(e) Regarding the resolution of the frame center and the 4 corners, check if it is clear in black and white in
the position circled in red as shown in the below.
In case either (1) or (2) of the above fails, it is necessary to replace the lens-barrel group unit with the new one.
High-definition resolution chart (J63079)
-A6-1 ･ E4300 -
VAA12901-R.3594.A