Brother MFC620CN Service Manual page 422

Selector
No.
1
|
Not used.
5
Effective time length of the
6
white level compensation data
|
obtained beforehand
8
(Not used.)
NOTE: Selectors 6 through 8 are applicable only to models equipped with ADF units.
Selectors 6 through 8: Effective time length of the white level compensation data obtained
If you set documents in the ADF and the document front sensor detects them, the controller will
make correction of the reference voltage to be applied to white level compensation for document
scanning before the Copy key is pressed.
These selectors determine how long compensation data obtained beforehand will keep effective.
WSW44 (
Speeding up scanning-1)
Function
beforehand (Not used.)
App. 4-47
Setting and Specifications
No. 6 7 8
0 0 0 : Obtained compensation data
ineffective
0 0 1 : 1 min.
0 1 0 : 3 min.
0 1 1 : 5 min.
1 0 0 : 10 min.
1 0 1 : 15 min.
1 1 0 : 20 min.
1 1 1 : 30 min.
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