Pentax K 100D Super, Service Manual

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76700 -75/94-
26-4
．
BC (Battery check)
Preparation: Battery adaptor, Power supply, Cercuit tester
26-5. Confirmation of AF focus by taking a picture
Confirmation is the same as *istD (76180).
This section describes the method of checking the AF focus for your reference. It will enable you to
do the overall confirmation of the position of the AF focus, and also will be useful in the service.
[Required equipment] Computer (for Digital adjustment), AC adaptor, USB cable, SD card (for taking
picture), FA50mm F1.4, AF chart for confirmation, Scale for confirmation (attached the end of manual),
Lighting (If the fluorescent lamp is used for lighting, the Inverter lighting
(Flicker-less) must be used.), Image viewing software (For Example :ACDSee
TM
, Adobe Photo shop or
other)
(1) Attach the lens (FA 50mm) to the camera, and set the lens aperture to A position.
(2) Set the camera as follows.
Capture mode: AV (Aperture-priority) mode, Focus mode SW: AF.S, Focus point: Spot, White
Balance: AWB, Recorded pixels: 6M (Default setting), Quality Level: Best, Color Saturation:
Normal, Image Sharpness: Normal, Contrast: Normal
(3) Set the aperture to open position by Av dial of camera.
(4) Set the chart and scale as follows. Lighten the chart so that the white portion of chart
becomes EV12 or more. If necessary, settle the camera on a tripod.
(5) Set the camera so that the distance from the chart to camera becomes 1m
(6) Turn the distance ring of the lens to infinity (
∞ ) by depressing the shutter button halfway
while covering the front of lens with the palm.
(7) Take two pictures of chart while aiming the focus point of center (for Spot) to the border line
between white and black chart.
(8) The same manner with above. Turn the distance ring of the lens to minimum focus distance
and repeat above (7) for confirming vertical sensor, set the camera at vertical position.
(9) Display the images on the computer with image viewing software.
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DC5.6V
→
Lighting
DC5.4V
→
Lighting
DC4.6V
→
Blinking