Panasonic Workio DP-C405, Service Handbook

Page: 298 / 808

298
DP-C405/C305/C265
FEB 2008 Ver. 1.1
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.
Clean the Glass (L) & Mirror
Flatbed
Optical Line
White
Balance
Plate
Original Document
ADF White
Balance
Plate
Optical Line
Original Document
Clean the White
Balance Plate
Clean the Glass (S)
<Flatbed Scanner> <ADF Scanner>
The Vertical Line(s)
is harder to see
in this area.
Check point:
The Vertical Line(s)
is easier to see
in this area.
Vertical Line Sample