Panasonic DP-C405 Service Handbook page 298

Vertical Line Sample
Check point:
The Vertical Line(s)
is easier to see
in this area.
The Vertical Line(s)
is harder to see
in this area.
<Flatbed Scanner>
Optical Line
Clean the Glass (L) & Mirror
To differentiate whether the Vertical Line(s) is caused by the Scanner, or the Printer.
1. Make a copy of the Test Chart by enlarging it to 110%.
2. If the Vertical Line moves to a different position, then it is caused by the Scanner.
If the Vertical Line does not move, then it is caused by the Printer.
<Flatbed Scanner Vertical Line(s) Countermeasure>
Adjust the Shading Position by following the steps below.
1. Clean the Glass (L) & Mirror as illustrated, and make a copy of the Test Chart and confirm whether the
line(s) has cleared out. If the vertical line(s) did not clear out, proceed with the steps below.
2. Enter the Service Parameter "F6-309: Shading Position Offset".
Note:
This adjustment is required, as the White Balance Plate, and the Glass (L) are glued together, and
therefore its not easy to remove, or clean.
3. Change the Value by +/- 1 step at the time. (Ex. Original Value is 0", change to "+1" or "-1".)
4. Exit the Service Mode.
5. Make a copy of the Test Chart and confirm.
6. If the vertical line(s) did not clear out, repeat the above steps by increasing, or decreasing the value.
(Ex. "+2", "-2", "+3", or "-3".)
Note:
The Shading Position changes by 0.1 mm for each 1 value increase/decrease.
<ADF Scanner Vertical Line(s) Countermeasure>
Clean the ADF White Balance Plate, and the Glass (S) as illustrated.
Ver. 1.1
White
Original Document
Balance
Plate
Flatbed
298
<ADF Scanner>
ADF White
Balance
Plate
Clean the White Optical Line
Balance Plate
DP-C405/C305/C265
Original Document
Clean the Glass (S)
FEB 2008