Samsung L830 Service Manual page 48

9) FOCUS ADJ
Objective of Adjustment: To adjust PUNT after replacing the MAIN PCB or lens barrel.
Required Equipment: Focus Adjustment Chart and Tripod
< Adjustment Procedures >
a...Put up the Focus Adjustment Chart.
b...Install the camera on the tripod.
c...Set the camera up so that the distance between the camera and the chart is 80cm.
d...Save the corresponding adjustment file into the SD card.
e...Install the SD card containing the program file and turn the camera on.
f...The adjustment is conducted automatically.
AF Chart
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Ⅲ. ADJUSTMENT