Toshiba e-STUDIO520 Service Handbook page 274

[B] Adjustment of the magnification ratio of the lens
Notes:
• Perform this adjustment only when the lens unit is taken off or replaced.
• Make sure that the primary scanning reproduction ratio (printer section) is correct before this
adjustment.
(1) Place a ruler on the original glass (in the primary scanning direction) and make a copy on A4/LT-
sized paper at 100% reproduction ratio.
(2) Compare the copied ruler with the actual
ruler.
(3) If each mark on the rulers differs, perform the adjustment with the following procedures.
<Procedure>
(1) Take off the original glass and lens cover.
(2) Loosen 4 screws fixing the lens unit.
e-STUDIO520/523/600/603/720/723/850/853
ADJUSTMENT
Feeding Direction
Copied ruler
Screw
Lens unit
© 2005 - 2007 TOSHIBA TEC CORPORATION All rights reserved
3 - 42
Actual ruler
Fig. 3-35
Screw
Fig. 3-36