Dadf Adjustment - Samsung CLX-8640 series Service Manual

DADF Adjustment

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Diagnostics > Adjustment > DADF Adjustment > Automatic Adjustment
Purpose
Operation Procedure
Verification
Specification
Reference
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To correct image position and magnification of scanned images via DADF automatically.
1) Locate the Scanner A/S Chart at the DADF. Note that "Lead Edge" arrows need to head to
feeding direction and to be placed face up. Also note that the Scanner A/S Charts come in
two size, A4 and Letter . Choose one size to meet your primary size of use.
2) Press "OK" button. Automatic scanning will occur ,and the system will automatically
calculate the proper value based on scanning result of the chart .
3) The new values are set to the table.
1) Copy the Scanner A/S Chart. Scanning must be occur from the DADF.
2) To check the image position, compare the position of scale marks (a,b) of the chart to the
copy.
3) To check the magnification, compare the length of line "c" of the chart to the copy.
a,b : 10 ± 1.5 mm
c: 190 ± 1.5 mm
A4 Scanner A/S Chart
4. Troubleshooting
4-60