Triumph Adler DP 773, Service Manual

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3PH
1-3-27
U087 Setting DP reading position modification operation
Description
The presence or absence of dust is determined by comparing the scan data of the original trailing
edge and that taken after the original is conveyed past the DP original scanning position. If dust
is identified, the DP original scanning position is adjusted for the following originals.
Using image correction to reduce black streaks.
Purpose
When using DP, to solve the problem when black lines occurs due to the dust with respect to
original reading position.
Caution
The coordinates of position where documents are scanned are modified when [System Menu]
[Adjustment/Maintenance] [Correcting Black Line] is set to [Off].
Method
1. Press the start key.
2. Select the item to be set.
Setting: [CCD]
1. Select the item to be set.
2. Change the value using the +/- or numeric keys.
* : Decreasing the setting makes the objects with less density recognized as dusts, less
dusts becomes detectable.
Increasing the value allows more dusts to be detected and the cleaning prompts to be dis-
played more often.
3. Press the start key. The value is set.
Method: [Black Line]
1. Select [Clear].
2. Press the start key. The setting is cleared.
Completion
Press the stop key. The screen for selecting a maintenance item No. is displayed.
Item No. Description
Display Description
CCD Setting of standard data when dust is detected.
Black Line Initialization of original reading position.
Display Description
Setting
range
Initial
setting
R Lowest density of the R regard as the dust 0 to 255 125
G Lowest density of the G regard as the dust 0 to 255 125
B Lowest density of the B regard as the dust 0 to 255 125