Oce TCS400 User Manual page 160

Repeat the procedure for the other slider.
4
Make sure both the sliders are adjusted to same thickness.
Close the scanner cover.
5
If the pressure platen is not in the default position for longer than a
Note:
defined time, the error message 'Unable to adjust the scanner lower the
pressure platen' can appear. If this error message appears, return the pressure
platen to the default position. Wait until the scanner adjustment is complete,
then adjust the pressure platen again. (see 'An adjustment error' on page 214)
Result
If a thick original is inserted, the original is fed through the scanner 2 inches
more than a thin original. The additional inches are not shown on the output.
160 Océ TCS400 User manual